diff --git a/.gitignore b/.gitignore
index 36c51ee..18109e9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,6 @@ dist
 # Local machine metadata and runtime logs
 .DS_Store
 *.log
+
+# Permission-preview audit trail (operator/target identifiers)
+logs/permission-preview.jsonl
diff --git a/docs/permission-preview.md b/docs/permission-preview.md
new file mode 100644
index 0000000..a32a467
--- /dev/null
+++ b/docs/permission-preview.md
@@ -0,0 +1,29 @@
+# 权限视角预览
+
+授权账号登录后，直接访问 `/who` 搜索同一组织的有效用户，先核对角色与数据范围，再进入只读预览。常规页面不展示入口，未授权用户直接访问链接也无法使用。预览使用目标账号真实角色：BI-Leader/所有权限/数智中心为全量，BI-Leader-Dep为本部门，其余为本人负责；多角色时全量优先。保持各业务模块现有的范围规则，库存公共汇总等不会因此变为个人数据。
+
+## 授权与身份来源
+
+- 默认授权已核实的旧SSO账号：`puhongxia`（`1014807041625047040`）、`zhanglan`（`1105261382487539712`）、`shishengliang`（`1116631120763437056`）。
+- 后续通过服务端 `BI_PERMISSION_PREVIEW_USER_IDS` 配置逗号分隔的用户ID名单；该配置**替换**默认名单。空字符串关闭全部授权。不要用姓名、前端配置或请求参数授予权限。
+- 身份与角色读取现有SSO库 `lingniu_prod`，可由 `BI_IDENTITY_SCHEMA` 指定；仅读取启用且未删除的用户、未删除角色和部门。不读取密码、电话等字段。
+- 新车辆系统 `ry-cloud` 的账号ID不是现有BI登录ID，不能直接填入授权名单，也不能按同名人拼接身份。个人车辆范围通过唯一、大小写精确相同的登录名匹配两套有效账号，正常登录与预览共用同一过滤；缺失或歧义不扩权。新用户租户由 `BI_VEHICLE_IDENTITY_TENANT_ID` 指定（默认已核实的 `000000`），部门仍采用原BI登录目录的部门。
+- 本地免登录默认无预览权限。用户明确要求后，可在本地 `.env` 同时开启 `DEV_BYPASS_AUTH=1`、`DEV_PERMISSION_PREVIEW=1`；仅非生产模式生效。可由 `DEV_PERMISSION_PREVIEW_USER_ID` 指定已授权的组织范围锚点（默认puhongxia ID），操作与审计身份仍为dev-local。局域网访问此开发服务也能使用该入口。真实用户授权验收仍需业务系统正常SSO登录。
+
+## 会话与隔离
+
+- 人员查询仅在输入关键词后返回模糊匹配结果；空白关键词不展示也不返回人员列表，范围筛选不能单独枚举人员。
+
+- 原登录Bearer始终代表操作者。预览使用独立随机令牌 `X-BI-Preview`，有效期30分钟，绑定操作者和目标用户；原JWT不被替换。
+- 服务端每次请求复核操作者授权、用户有效性、同组织关系、目标角色与部门。原身份与目标权限不做并集。
+- 切换会取消旧请求并重建页面，AI会话还按操作者及预览会话ID隔离；退出恢复原账号。写入接口及缓存刷新、调试接口禁止在预览中调用。
+- AI问数只查询，不自动记录需求。日报预览只读获取现有归档或内存生成，不建表、不保存归档。
+- 预览会话目前保存在服务进程内存，重启后失效，多实例部署需会话粘滞或先迁移到共享会话存储。
+
+## 审计
+
+默认追加到 `logs/permission-preview.jsonl`；可用 `BI_PERMISSION_PREVIEW_AUDIT_FILE` 配置持久化日志路径。记录开始、读取、阻止写入、退出，以及操作者ID、目标ID、时间、路径和范围，不记录令牌或业务数据。审计写入失败时拒绝预览请求。生产部署应挂载持久卷并由日志平台采集/轮转。
+
+## 验收
+
+验证未授权者拒绝、三类范围、目标失效、角色变动、跨组织拒绝、令牌伪造/过期/跨操作者复用、只读拦截和AI会话隔离。真实账号端到端登录仍需业务系统SSO会话；本地免登录不能替代此项。
diff --git a/src/App.tsx b/src/App.tsx
index a40f88d..779ba90 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -1,6 +1,7 @@
 import { lazy, Suspense, useEffect, useMemo, useState } from "react";
 import { Shell } from "./components/Shell";
 import AuthProvider from "./auth/AuthProvider";
+import PermissionPreview, { PermissionPreviewPage } from "./auth/PermissionPreview";
 import { useAuth } from "./auth/useAuth";
 import UnauthorizedPage from "./auth/UnauthorizedPage";
 import { canAccessEnergy } from "./shared/auth/roles";
@@ -34,8 +35,8 @@ function AuthGate() {
   }, []);
 
   useEffect(() => {
-    document.title = pathSet === "energy" ? "羚牛氢能-能源BI" : "羚牛氢能-资产BI";
-  }, [pathSet]);
+    document.title = routeKey === "who" ? "权限视角 - 羚牛氢能 BI" : pathSet === "energy" ? "羚牛氢能-能源BI" : "羚牛氢能-资产BI";
+  }, [pathSet, routeKey]);
 
   const modules = useMemo(
     () => buildModules(pathSet, user?.roles),
@@ -68,6 +69,8 @@ function AuthGate() {
     return <UnauthorizedPage message={error || undefined} />;
   }
 
+  if (routeKey === "who") return <PermissionPreviewPage />;
+
   // 隐藏后端管理页：通过路径或 hash 直接访问，主导航不出现
   if (routeKey === "ele/import") {
     return (
@@ -93,10 +96,15 @@ function AuthGate() {
   return <Shell key={pathSet} modules={modules} />;
 }
 
+function AuthenticatedWorkspace() {
+  const { identityVersion = 0 } = useAuth();
+  return <PermissionPreview><AuthGate key={identityVersion} /></PermissionPreview>;
+}
+
 export default function App() {
   return (
     <AuthProvider>
-      <AuthGate />
+      <AuthenticatedWorkspace />
     </AuthProvider>
   );
 }
diff --git a/src/app/routing.test.ts b/src/app/routing.test.ts
index d2f5a64..d58ab95 100644
--- a/src/app/routing.test.ts
+++ b/src/app/routing.test.ts
@@ -9,6 +9,7 @@ test('normalizes legacy asset paths without losing search parameters', () => {
 test('keeps canonical and hidden administration paths unchanged', () => {
   assert.equal(resolveCanonicalUrl({ pathname: '/asset', search: '', hash: '#assets' }), null);
   assert.equal(resolveCanonicalUrl({ pathname: '/admin/feedback', search: '', hash: '' }), null);
+  assert.equal(resolveCanonicalUrl({ pathname: '/who', search: '', hash: '' }), null);
 });
 
 test('derives path groups and hidden routes from path or hash', () => {
@@ -16,5 +17,6 @@ test('derives path groups and hidden routes from path or hash', () => {
   assert.equal(getPathSet('/asset'), 'asset');
   assert.equal(getRouteKey('/asset', '#/ele/import'), 'ele/import');
   assert.equal(getRouteKey('/admin/feedback', ''), 'admin/feedback');
+  assert.equal(getRouteKey('/who', ''), 'who');
   assert.equal(getRouteKey('/asset', '#mileage'), '');
 });
diff --git a/src/app/routing.ts b/src/app/routing.ts
index c7abf66..7b4527d 100644
--- a/src/app/routing.ts
+++ b/src/app/routing.ts
@@ -5,7 +5,7 @@ interface BrowserLocation {
   search: string;
   hash: string;
 }
-const ROOT_PATHS = new Set(['/asset', '/energy', '/ele/import', '/admin/feedback']);
+const ROOT_PATHS = new Set(['/asset', '/energy', '/ele/import', '/admin/feedback', '/who']);
 
 const LEGACY_PATHS: Record<string, { path: string; hash?: string }> = {
   '/': { path: '/asset' },
@@ -35,6 +35,7 @@ export function getPathSet(pathname: string): PathSet {
 }
 
 export function getRouteKey(pathname: string, hash: string): string {
+  if (pathname === '/who') return 'who';
   if (pathname === '/ele/import' || hash === '#/ele/import' || hash === '#ele/import') {
     return 'ele/import';
   }
diff --git a/src/auth/AuthProvider.tsx b/src/auth/AuthProvider.tsx
index 9da7247..be5a7b2 100644
--- a/src/auth/AuthProvider.tsx
+++ b/src/auth/AuthProvider.tsx
@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef, type ReactNode } from 'react';
-import { AuthContext, type AuthState } from './useAuth';
-import { setTokenGetter } from './api-client';
+import { AuthContext, type AuthState, type AuthUser } from './useAuth';
+import { setTokenGetter, setPreviewTokenGetter, invalidateAuthenticatedRequests, fetchPreviewControl } from './api-client';
 
 const AUTH_API = '/api/auth';
 
@@ -13,43 +13,147 @@ export default function AuthProvider({ children }: { children: ReactNode }) {
   });
   const tokenRef = useRef<string | null>(null);
   const authStarted = useRef(false);
+  const previewTokenRef = useRef<string | null>(null);
+  const actorRef = useRef<AuthUser | null>(null);
+  const transitionRef = useRef(0);
+  const [identityVersion, setIdentityVersion] = useState(0);
+  const [preview, setPreview] = useState<{ user: AuthUser; expiresAt: string } | null>(null);
+  const [canPreview, setCanPreview] = useState(false);
+  const [previewNotice, setPreviewNotice] = useState<string | null>(null);
+
+  function resetPreview(message: string | null = null) {
+    transitionRef.current += 1;
+    previewTokenRef.current = null;
+    sessionStorage.removeItem('bi_preview_token');
+    invalidateAuthenticatedRequests();
+    setIdentityVersion(v => v + 1);
+    setPreview(null);
+    setPreviewNotice(message);
+  }
+
+  async function loadPreviewContext(user: AuthUser | null) {
+    actorRef.current = user;
+    try {
+      const context = await fetchPreviewControl<{ canPreview: boolean; actor: AuthUser }>('context');
+      actorRef.current = context.actor;
+      setCanPreview(context.canPreview);
+      if (context.canPreview) {
+        const savedPreview = sessionStorage.getItem('bi_preview_token');
+        if (savedPreview) {
+          previewTokenRef.current = savedPreview;
+          try {
+            const current = await fetchPreviewControl<{ user: AuthUser; expiresAt: string }>('current', undefined, true);
+            setPreview(current);
+          } catch {
+            resetPreview('上次权限视角已失效，已返回本人视角。');
+          }
+        }
+      } else {
+        resetPreview();
+      }
+    } catch {
+      resetPreview();
+      setCanPreview(false);
+    }
+  }
+
+  async function finishAuthentication(user: AuthUser | null) {
+    await loadPreviewContext(user);
+    if (!tokenRef.current) return;
+    setState({ isLoading: false, isAuthenticated: true, user: actorRef.current, error: null });
+  }
+
+  async function startPreview(userId: string) {
+    const transition = ++transitionRef.current;
+    const next = await fetchPreviewControl<{ previewToken: string; user: AuthUser; expiresAt: string }>('start', {
+      method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ userId }),
+    });
+    if (transition !== transitionRef.current) return;
+    invalidateAuthenticatedRequests();
+    previewTokenRef.current = next.previewToken;
+    sessionStorage.setItem('bi_preview_token', next.previewToken);
+    setPreview({ user: next.user, expiresAt: next.expiresAt });
+    setIdentityVersion(v => v + 1);
+    setPreviewNotice(null);
+  }
+
+  async function stopPreview() {
+    const stopping = fetchPreviewControl('stop', { method: 'POST' }, true);
+    resetPreview();
+    await stopping.catch(() => { setPreviewNotice('已退出本地预览；服务端凭证将自动到期。'); });
+  }
+
+  useEffect(() => {
+    if (!preview) return;
+    const token = previewTokenRef.current;
+    const validate = async () => {
+      try {
+        const current = await fetchPreviewControl<{ user: AuthUser; expiresAt: string }>('current', undefined, true);
+        if (token !== previewTokenRef.current) return;
+        if (JSON.stringify(current.user) !== JSON.stringify(preview.user)) {
+          invalidateAuthenticatedRequests();
+          setPreview(current);
+          setIdentityVersion(v => v + 1);
+        }
+      } catch {
+        if (token === previewTokenRef.current) resetPreview('权限视角验证失败，已返回本人视角，请重新选择。');
+      }
+    };
+    const timer = window.setInterval(validate, 60_000);
+    const expiry = window.setTimeout(() => resetPreview('权限视角已到期，已返回本人视角。'), Math.max(0, Date.parse(preview.expiresAt) - Date.now()));
+    window.addEventListener('focus', validate);
+    return () => { clearInterval(timer); clearTimeout(expiry); window.removeEventListener('focus', validate); };
+  }, [preview]);
 
   useEffect(() => {
     // 设置全局 token getter
     setTokenGetter(() => tokenRef.current);
 
-    // 防止 StrictMode 双重调用（jumpToken 一次性使用）
-    if (authStarted.current) return;
-    authStarted.current = true;
+    setPreviewTokenGetter(() => previewTokenRef.current);
 
     // 监听 401 事件
     const onUnauthorized = () => {
+      resetPreview();
+      setCanPreview(false);
       tokenRef.current = null;
       sessionStorage.removeItem('bi_jwt');
+      sessionStorage.removeItem('bi_user');
+      actorRef.current = null;
       setState({ isLoading: false, isAuthenticated: false, user: null, error: '会话已过期' });
     };
     window.addEventListener('auth:unauthorized', onUnauthorized);
 
-    authenticate();
-
-    return () => window.removeEventListener('auth:unauthorized', onUnauthorized);
+    const onPreviewEnded = (event: Event) => {
+      if ((event as CustomEvent).detail === 'PREVIEW_REVOKED') setCanPreview(false);
+      resetPreview('预览权限已失效，已返回本人视角。');
+    };
+    const onReadOnly = () => setPreviewNotice('权限视角仅供查看数据，请退出预览后进行修改操作。');
+    window.addEventListener('auth:preview-ended', onPreviewEnded);
+    window.addEventListener('auth:preview-readonly', onReadOnly);
+    // StrictMode 重新安装监听，但一次性 jumpToken 仅交换一次。
+    if (!authStarted.current) { authStarted.current = true; void authenticate(); }
+    return () => {
+      window.removeEventListener('auth:unauthorized', onUnauthorized);
+      window.removeEventListener('auth:preview-ended', onPreviewEnded);
+      window.removeEventListener('auth:preview-readonly', onReadOnly);
+    };
   }, []);
 
   async function authenticate() {
     // 本地开发免登录开关：.env 里设 VITE_DEV_BYPASS_AUTH=1 启用，仅 dev 生效
     if (import.meta.env.DEV && import.meta.env.VITE_DEV_BYPASS_AUTH === '1') {
-      setState({
-        isLoading: false,
-        isAuthenticated: true,
-        user: {
-          userId: 'dev-local',
-          userName: '本地开发',
-          permissionLevel: 'full',
-          depName: '',
-          roles: ['所有权限', 'BI-SCHEDULE-OPT', 'BI-ADMIN-FEEDBACK', 'BI-LEADER-ENERGY'],
-        },
-        error: null,
-      });
+      const devUser: AuthUser = {
+        userId: 'dev-local',
+        userName: '本地开发',
+        permissionLevel: 'full',
+        depName: '',
+        roles: ['所有权限', 'BI-SCHEDULE-OPT', 'BI-ADMIN-FEEDBACK', 'BI-LEADER-ENERGY'],
+      };
+      // 预览授权仍由后端独立开发开关决定，不使用真实用户令牌。
+      tokenRef.current = null;
+      await loadPreviewContext(devUser);
+      actorRef.current ||= devUser;
+      setState({ isLoading: false, isAuthenticated: true, user: actorRef.current, error: null });
       return;
     }
 
@@ -57,22 +161,20 @@ export default function AuthProvider({ children }: { children: ReactNode }) {
     const savedToken = sessionStorage.getItem('bi_jwt');
     if (savedToken) {
       tokenRef.current = savedToken;
-      // 验证 token 是否仍然有效（尝试请求 health）
+      // 从受保护的身份接口验证 JWT；不使用本地缓存用户决定权限。
       try {
-        const res = await fetch('/api/health', {
+        const res = await fetch('/api/auth/me', {
           headers: { Authorization: `Bearer ${savedToken}` },
         });
         if (res.ok) {
-          const savedUser = sessionStorage.getItem('bi_user');
-          setState({
-            isLoading: false,
-            isAuthenticated: true,
-            user: savedUser ? JSON.parse(savedUser) : null,
-            error: null,
-          });
+          const verifiedUser: AuthUser = await res.json();
+          if (!verifiedUser.userId) throw new Error('无效的用户身份');
+          await finishAuthentication(verifiedUser);
           return;
         }
       } catch { /* token 无效，继续流程 */ }
+      tokenRef.current = null;
+      resetPreview();
       sessionStorage.removeItem('bi_jwt');
       sessionStorage.removeItem('bi_user');
     }
@@ -108,19 +210,16 @@ export default function AuthProvider({ children }: { children: ReactNode }) {
         : `${window.location.pathname}${window.location.hash}`;
       window.history.replaceState({}, '', cleanUrl);
 
-      setState({
-        isLoading: false,
-        isAuthenticated: true,
-        user: data.user,
-        error: null,
-      });
+      await finishAuthentication(data.user);
     } catch (e) {
       setState({ isLoading: false, isAuthenticated: false, user: null, error: '认证过程出错' });
     }
   }
 
   return (
-    <AuthContext.Provider value={state}>
+    <AuthContext.Provider value={{ ...state, actor: actorRef.current || state.user,
+      user: preview?.user || state.user, preview, canPreview, identityVersion, previewNotice,
+      startPreview, stopPreview, clearPreviewNotice: () => setPreviewNotice(null) }}>
       {children}
     </AuthContext.Provider>
   );
diff --git a/src/auth/PermissionPreview.css b/src/auth/PermissionPreview.css
new file mode 100644
index 0000000..8f63f22
--- /dev/null
+++ b/src/auth/PermissionPreview.css
@@ -0,0 +1,31 @@
+.permission-preview-banner{position:fixed;inset:0 0 auto;z-index:200;display:flex;align-items:center;gap:12px;min-height:56px;padding:9px 20px;background:#eff6ff;border-bottom:1px solid #adc8f4;color:#1e40af;font-size:12px;box-shadow:0 2px 8px #1d4ed10a}
+.permission-preview-identity{flex:1;min-width:0;display:flex;flex-wrap:wrap;align-items:center;gap:6px 16px}.permission-preview-identity strong{font-size:13px}.permission-preview-identity small{margin-left:14px;color:#64748b}
+.permission-preview-banner button{border:1px solid #b9cef1;border-radius:6px;background:#fff;padding:6px 10px;white-space:nowrap}.permission-preview-banner button:hover{background:#dbeafe}
+.permission-preview-active{padding-top:56px}.permission-preview-active .app-shell>nav.fixed.top-0{top:56px;height:calc(100% - 56px)}.permission-preview-active .app-shell-content>.fixed.top-0{top:56px}
+.permission-preview-notice{position:fixed;top:64px;left:50%;transform:translateX(-50%);z-index:210;display:flex;align-items:center;gap:14px;padding:10px 14px;border:1px solid #f5d79e;border-radius:8px;background:#fff9ed;color:#92400e;font-size:12px;box-shadow:0 3px 12px #0f172a15;max-width:90vw}.permission-preview-notice button{flex-shrink:0}
+.permission-preview-dialog{position:fixed;inset:0;margin:auto;width:min(700px,calc(100vw - 32px));max-height:calc(100dvh - 48px);padding:0;border:1px solid #d7e1ee;border-radius:14px;background:#fff;color:#334155;box-shadow:0 24px 90px #0f172a35;font-size:12px}
+.permission-preview-dialog header{display:flex;justify-content:space-between;align-items:flex-start;padding:20px 22px 16px;border-bottom:1px solid #e1e8f0}.permission-preview-dialog h2{display:flex;align-items:center;gap:8px;margin:0;font-size:16px;font-weight:700;color:#1e293b}.permission-preview-dialog header p{margin:6px 0 0;color:#64748b}.permission-preview-dialog header button{padding:3px;color:#64748b}
+.permission-preview-body{padding:18px 22px;overflow:auto;min-height:0}.permission-preview-guide{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.permission-preview-guide>div{padding:12px;border:1px solid #dce6f3;border-radius:8px;background:#f8fafc}.permission-preview-guide strong{display:block;color:#1e40af;font-size:12px}.permission-preview-guide code{display:block;margin-top:5px;font:11px ui-monospace,monospace;color:#64748b}.permission-preview-guide p{margin:7px 0 0;line-height:1.6;color:#64748b}.permission-preview-hint{margin:12px 0 16px;color:#64748b;font-size:11px;line-height:1.7}
+.permission-preview-search{display:flex;gap:10px;margin-bottom:12px}.permission-preview-search label{display:flex;align-items:center;gap:8px;flex:1;border:1px solid #ced9e8;border-radius:7px;padding:0 10px;color:#94a3b8}.permission-preview-search input{width:100%;min-width:0;border:0;outline:0;padding:10px 0;color:#334155;background:transparent}.permission-preview-search label:focus-within{outline:2px solid #93b5ff;outline-offset:1px}.permission-preview-search select{border:1px solid #ced9e8;border-radius:7px;background:white;padding:8px;color:#475569}
+.permission-preview-users{min-height:140px;border:1px solid #dce4ef;border-radius:8px;overflow:hidden}.permission-preview-users>label{display:flex;align-items:center;gap:10px;padding:11px 13px;border-bottom:1px solid #e5ebf3;cursor:pointer}.permission-preview-users>label:last-child{border-bottom:0}.permission-preview-users>label:hover{background:#f8faff}.permission-preview-users>label.is-selected{background:#eff6ff}.permission-preview-users input{accent-color:#2563eb}.permission-preview-users label>div{min-width:0;flex:1}.permission-preview-users strong{display:block;font-size:13px;color:#334155}.permission-preview-users span{display:block;font-size:11px;color:#64748b;margin-top:3px;overflow-wrap:anywhere}.permission-preview-users small{font-weight:400;font-size:10px;color:#2563eb}.permission-preview-users em{font-style:normal;padding:4px 7px;border-radius:5px;background:#f1f5f9;color:#475569;white-space:nowrap;font-size:11px}.permission-preview-empty{padding:35px 10px;text-align:center;color:#94a3b8}
+.permission-preview-pages{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-top:12px;color:#64748b}.permission-preview-pages button{border:1px solid #dce4ef;padding:5px 9px;border-radius:5px}.permission-preview-dialog button:disabled{opacity:.45;cursor:not-allowed}.permission-preview-error{padding:9px 11px;margin:10px 0;background:#fff1f2;color:#be123c;border-radius:6px;display:flex;justify-content:space-between;gap:10px}.permission-preview-error button{text-decoration:underline}
+.permission-preview-dialog footer{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 22px;border-top:1px solid #dce4ef;background:#f8fafc}.permission-preview-dialog footer strong{display:block;color:#334155;font-size:12px}.permission-preview-dialog footer span{display:block;color:#64748b;font-size:11px;margin-top:3px}.permission-preview-primary{padding:9px 13px;border-radius:7px;background:#2563eb;color:#fff;white-space:nowrap}.permission-preview-dialog button:focus-visible,.permission-preview-banner button:focus-visible{outline:2px solid #2563eb;outline-offset:3px}
+@media(max-width:640px){.permission-preview-banner{gap:7px;padding:8px 10px;min-height:76px}.permission-preview-identity{display:block}.permission-preview-identity>span{display:block;margin-top:4px;font-size:10px}.permission-preview-identity small{display:block;margin:2px 0 0}.permission-preview-banner button{padding:6px;font-size:11px}.permission-preview-active{padding-top:76px}.permission-preview-notice{top:84px}.permission-preview-dialog{width:calc(100vw - 16px);max-height:calc(100dvh - 20px)}.permission-preview-body{padding:14px}.permission-preview-dialog header,.permission-preview-dialog footer{padding:14px}.permission-preview-guide{gap:6px}.permission-preview-guide>div{padding:8px}.permission-preview-guide code{font-size:9px}.permission-preview-guide p{font-size:10px}.permission-preview-search{gap:6px}.permission-preview-search select{max-width:116px}}
+
+.permission-preview-active .asset-analysis-overlay,.permission-preview-active .bi-flow-modal-backdrop{top:56px}
+@media(max-width:640px){.permission-preview-active .asset-analysis-overlay,.permission-preview-active .bi-flow-modal-backdrop{top:76px}}
+.permission-preview-active .asset-analysis-dialog{min-height:0;max-height:calc(100dvh - 104px)}
+.permission-preview-active .bi-flow-modal{max-height:calc(100dvh - 88px)}
+@media(max-width:640px){.permission-preview-active .asset-analysis-dialog{max-height:calc(100dvh - 124px)}.permission-preview-active .bi-flow-modal{max-height:calc(100dvh - 108px)}}
+.permission-preview-page{min-height:100dvh;padding:32px 20px;background:#f4f7fb;display:flex;align-items:flex-start;justify-content:center}
+.permission-preview-active .permission-preview-page{min-height:calc(100dvh - 56px)}
+.permission-preview-page .permission-preview-page-panel{position:static;inset:auto;display:flex;flex-direction:column;width:min(820px,100%);max-height:none;margin:0;border-color:#dce5f0;box-shadow:0 10px 35px #33415508}
+.permission-preview-page-panel .permission-preview-body{overflow:visible}
+.permission-preview-dialog header .permission-preview-back{display:inline-flex;align-items:center;justify-content:center;gap:7px;flex-shrink:0;min-height:44px;padding:10px 16px;border:1px solid #ced9e8;border-radius:8px;background:#f8fafc;font-size:14px;font-weight:600;color:#475569;white-space:nowrap;cursor:pointer;transition:background .15s,border-color .15s}.permission-preview-dialog header .permission-preview-back:hover:not(:disabled){background:#eff6ff;border-color:#adc8f4;color:#1d4ed8}
+.permission-preview-denied{width:min(500px,100%);padding:36px;background:white;border:1px solid #dce5f0;border-radius:12px;text-align:center;color:#64748b}.permission-preview-denied>svg{margin:auto;color:#94a3b8}.permission-preview-denied h1{font-size:18px;color:#334155;margin:16px 0 8px}.permission-preview-denied p{font-size:13px}.permission-preview-denied a{display:inline-block;margin-top:20px;font-size:12px;color:#2563eb}
+@media(max-width:640px){.permission-preview-page{padding:16px 10px}.permission-preview-active .permission-preview-page{min-height:calc(100dvh - 76px)}}
+.permission-preview-page .permission-preview-page-panel{max-height:calc(100dvh - 64px)}
+.permission-preview-page-panel .permission-preview-body{overflow:auto}
+.permission-preview-page-panel>header,.permission-preview-page-panel>footer{flex-shrink:0}
+.permission-preview-active .permission-preview-page-panel{max-height:calc(100dvh - 120px)}
+@media(max-width:640px){.permission-preview-page .permission-preview-page-panel{max-height:calc(100dvh - 32px)}.permission-preview-active .permission-preview-page-panel{max-height:calc(100dvh - 108px)}}
diff --git a/src/auth/PermissionPreview.tsx b/src/auth/PermissionPreview.tsx
new file mode 100644
index 0000000..9d1144a
--- /dev/null
+++ b/src/auth/PermissionPreview.tsx
@@ -0,0 +1,85 @@
+import { useEffect, useState, type ReactNode } from 'react';
+import { ArrowLeft, Eye, Search, ShieldCheck, X } from 'lucide-react';
+import { fetchPreviewControl } from './api-client';
+import { useAuth, type AuthUser } from './useAuth';
+import './PermissionPreview.css';
+
+const scopes = [
+  { level: 'full', title: '全量数据', role: 'BI-Leader', detail: '查看全量业务数据。' },
+  { level: 'department', title: '部门数据', role: 'BI-Leader-Dep', detail: '查看当前用户所在部门的数据。' },
+  { level: 'personal', title: '本人数据', role: '其他角色默认', detail: '查看本人负责的车辆。' },
+];
+export function permissionScope(user: AuthUser) {
+  return scopes.find(s => s.level === user.permissionLevel)?.title || '本人数据';
+}
+export default function PermissionPreview({ children }: { children: ReactNode }) {
+  const { isAuthenticated, actor, preview, previewNotice, clearPreviewNotice, stopPreview } = useAuth();
+  return <div className={preview ? 'permission-preview-active' : undefined}>
+    {isAuthenticated && preview && <aside className="permission-preview-banner" aria-label="当前权限视角">
+      <Eye size={17} /><div className="permission-preview-identity"><strong>只读预览：{preview.user.userName}</strong><span>{preview.user.depName || '未分配部门'} · {permissionScope(preview.user)}<small>登录人：{actor?.userName}</small></span></div>
+      <button onClick={() => window.location.assign('/who')}>切换人员</button><button onClick={() => void stopPreview?.()}>退出预览</button>
+    </aside>}
+    {previewNotice && <div className="permission-preview-notice" role="status">{previewNotice}<button onClick={clearPreviewNotice} aria-label="关闭权限提示"><X size={14} /></button></div>}
+    {children}
+  </div>;
+}
+export function PermissionPreviewPage() {
+  const { canPreview } = useAuth();
+  return <main className="permission-preview-page">
+    {canPreview ? <PreviewPicker onClose={() => window.location.assign('/asset#assets')} /> : <section className="permission-preview-denied"><ShieldCheck size={28} /><h1>无权限访问</h1><p>当前账号未获授权使用权限视角。</p><a href="/asset#assets">返回 BI</a></section>}
+  </main>;
+}
+function PreviewPicker({ onClose }: { onClose: () => void }) {
+  const { startPreview, preview } = useAuth();
+  const [query, setQuery] = useState('');
+  const [level, setLevel] = useState('');
+  const [page, setPage] = useState(1);
+  const [users, setUsers] = useState<AuthUser[]>([]);
+  const [hasMore, setHasMore] = useState(false);
+  const [selected, setSelected] = useState<AuthUser | null>(null);
+  const [loading, setLoading] = useState(false);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState('');
+  const [retry, setRetry] = useState(0);
+  const hasQuery = query.trim().length > 0;
+  useEffect(() => {
+    const controller = new AbortController();
+    setError(''); setUsers([]); setSelected(null); setHasMore(false);
+    if (!query.trim()) { setLoading(false); return; }
+    setLoading(true);
+    const timer = window.setTimeout(async () => {
+      try {
+        const params = new URLSearchParams({ q: query.trim(), page: String(page) });
+        if (level) params.set('level', level);
+        const result = await fetchPreviewControl<{ users: AuthUser[]; page: number; hasMore: boolean }>(`users?${params}`, { signal: controller.signal });
+        if (!controller.signal.aborted) { setUsers(result.users); setHasMore(result.hasMore); }
+      } catch (e) {
+        if (!controller.signal.aborted) setError(e instanceof Error ? e.message : '加载失败');
+      } finally { if (!controller.signal.aborted) setLoading(false); }
+    }, 250);
+    return () => { clearTimeout(timer); controller.abort(); };
+  }, [query, level, page, retry]);
+  async function enter() {
+    if (!selected || busy) return;
+    setBusy(true); setError('');
+    try { await startPreview?.(selected.userId); onClose(); }
+    catch (e) { setError(e instanceof Error ? e.message : '切换失败，请重试'); setBusy(false); }
+  }
+  return <section className="permission-preview-dialog permission-preview-page-panel" aria-labelledby="permission-preview-title">
+    <header><div><h2 id="permission-preview-title"><ShieldCheck size={19} />权限视角</h2><p>选择人员，查看其实际页面权限与数据范围。</p></div><button disabled={busy} className="permission-preview-back" onClick={onClose}><ArrowLeft size={18} aria-hidden="true" />返回 BI</button></header>
+    <div className="permission-preview-body">
+      <div className="permission-preview-guide" aria-label="三类数据权限说明">{scopes.map(scope => <div key={scope.level}><strong>{scope.title}</strong><code>{scope.role}</code><p>{scope.detail}</p></div>)}</div>
+      <p className="permission-preview-hint">菜单和数据随目标用户权限变化；共享汇总仍按页面注明的公共口径展示。预览期间仅可查看，不能修改业务数据。</p>
+      <div className="permission-preview-search"><label><Search size={16} /><input autoFocus type="search" value={query} disabled={busy} onChange={e => { setQuery(e.target.value); setPage(1); }} placeholder="搜索中文姓名、用户名或部门" aria-label="搜索人员" /></label><select aria-label="数据范围筛选" value={level} disabled={busy} onChange={e => { setLevel(e.target.value); setPage(1); }}><option value="">全部数据范围</option>{scopes.map(s => <option key={s.level} value={s.level}>{s.title}</option>)}</select></div>
+      {error && <div className="permission-preview-error" role="alert">{error}<button disabled={busy} onClick={() => setRetry(v => v + 1)}>重试</button></div>}
+      {!hasQuery ? <p className="permission-preview-empty">输入中文姓名、用户名或部门关键词，模糊搜索人员。</p> : <div className="permission-preview-users" role="radiogroup" aria-label="选择预览用户" aria-busy={loading}>
+        {loading ? <p className="permission-preview-empty">正在加载人员…</p> : !users.length ? <p className="permission-preview-empty">未找到匹配人员，请调整搜索条件。</p> : users.map(user => <label key={user.userId} className={selected?.userId === user.userId ? 'is-selected' : ''}>
+          <input type="radio" name="preview-user" value={user.userId} checked={selected?.userId === user.userId} disabled={busy} onChange={() => setSelected(user)} />
+          <div><strong>{user.userName} {preview?.user.userId === user.userId && <small>当前视角</small>}</strong><span>{user.loginName || user.userId}</span></div><em>{permissionScope(user)}</em>
+        </label>)}
+      </div>}
+      {hasQuery && (hasMore || page > 1) && <div className="permission-preview-pages"><button disabled={page === 1 || loading || busy} onClick={() => setPage(v => v - 1)}>上一页</button><span>第 {page} 页</span><button disabled={!hasMore || loading || busy} onClick={() => setPage(v => v + 1)}>下一页</button></div>}
+    </div>
+    <footer><div>{selected ? <><strong>即将进入：{selected.userName}</strong><span>{permissionScope(selected)}</span></> : <span>请选择一位用户开始预览</span>}</div><button className="permission-preview-primary" disabled={!selected || busy || loading} onClick={() => void enter()}>{busy ? '正在切换…' : '进入该用户视角'}</button></footer>
+  </section>;
+}
diff --git a/src/auth/api-client.ts b/src/auth/api-client.ts
index 4cee583..fcfe4fe 100644
--- a/src/auth/api-client.ts
+++ b/src/auth/api-client.ts
@@ -1,27 +1,59 @@
-/** 全局认证 fetch 客户端 */
-
+/** 登录身份和预览身份分别传递；切换视角会取消旧视角的在途请求。 */
 let tokenGetter: () => string | null = () => null;
-
-export function setTokenGetter(fn: () => string | null) {
-  tokenGetter = fn;
+let previewTokenGetter: () => string | null = () => null;
+let identityAbort = new AbortController();
+let identityVersion = 0;
+export function setTokenGetter(fn: () => string | null) { tokenGetter = fn; }
+export function setPreviewTokenGetter(fn: () => string | null) { previewTokenGetter = fn; }
+export function invalidateAuthenticatedRequests() {
+  identityVersion += 1;
+  identityAbort.abort();
+  identityAbort = new AbortController();
 }
+const expiredPreviewCodes = new Set(['PREVIEW_EXPIRED', 'PREVIEW_REVOKED', 'PREVIEW_INVALID', 'PREVIEW_TARGET_UNAVAILABLE']);
 
-export async function fetchAuthenticated(url: string, options?: RequestInit): Promise<Response> {
+async function authenticatedRequest(url: string, options: RequestInit | undefined, preview: boolean, business: boolean): Promise<Response> {
+  const version = identityVersion;
+  const headers = new Headers(options?.headers);
   const token = tokenGetter();
-  const res = await fetch(url, {
-    ...options,
-    headers: {
-      ...options?.headers,
-      ...(token ? { Authorization: `Bearer ${token}` } : {}),
-    },
-  });
-  if (res.status === 401) {
-    window.dispatchEvent(new CustomEvent('auth:unauthorized'));
-    throw new Error('Unauthorized');
+  if (token) headers.set('Authorization', `Bearer ${token}`);
+  headers.delete('X-BI-Preview');
+  const previewToken = preview ? previewTokenGetter() : null;
+  if (previewToken) headers.set('X-BI-Preview', previewToken);
+  const signal = business
+    ? options?.signal ? AbortSignal.any([options.signal, identityAbort.signal]) : identityAbort.signal
+    : options?.signal;
+  const res = await fetch(url, { ...options, headers, signal });
+  if (business && version !== identityVersion) throw new DOMException('权限视角已切换', 'AbortError');
+  if (res.status === 401 || res.status === 403 || res.status === 410) {
+    const body = await res.clone().json().catch(() => ({}));
+    if (business && version !== identityVersion) throw new DOMException('权限视角已切换', 'AbortError');
+    if (expiredPreviewCodes.has(body.code)) {
+      // 已切换到其他人的旧响应不能结束新预览。
+      if (previewToken && previewToken === previewTokenGetter()) window.dispatchEvent(new CustomEvent('auth:preview-ended', { detail: body.code }));
+      throw new Error('权限视角已失效，请重新选择用户');
+    }
+    if (res.status === 401) {
+      window.dispatchEvent(new CustomEvent('auth:unauthorized'));
+      throw new Error('Unauthorized');
+    }
+    if (body.code === 'PREVIEW_READ_ONLY') {
+      window.dispatchEvent(new CustomEvent('auth:preview-readonly'));
+      throw new Error('权限视角为只读，请退出预览后操作');
+    }
   }
   return res;
 }
-
+export function fetchAuthenticated(url: string, options?: RequestInit): Promise<Response> {
+  return authenticatedRequest(url, options, true, true);
+}
+/** 管理接口始终使用实际登录身份；仅 current/stop 附带当前预览凭证。 */
+export async function fetchPreviewControl<T>(path: string, options?: RequestInit, includePreview = false): Promise<T> {
+  const res = await authenticatedRequest(`/api/permission-preview/${path}`, options, includePreview, false);
+  const data = await res.json();
+  if (!res.ok) throw new Error(data.error || data.message || '权限视角请求失败，请重试');
+  return data as T;
+}
 export async function fetchJson<T>(url: string, options?: RequestInit): Promise<T> {
   const res = await fetchAuthenticated(url, options);
   if (!res.ok) throw new Error(`API error: ${res.status} ${res.statusText}`);
diff --git a/src/auth/useAuth.ts b/src/auth/useAuth.ts
index c869e3a..a032ba3 100644
--- a/src/auth/useAuth.ts
+++ b/src/auth/useAuth.ts
@@ -1,25 +1,27 @@
 import { createContext, useContext } from 'react';
 
+export interface AuthUser {
+  userId: string;
+  userName: string;
+  loginName?: string;
+  permissionLevel: string;
+  depCode?: string;
+  depName: string;
+  roles?: string[];
+}
 export interface AuthState {
   isLoading: boolean;
   isAuthenticated: boolean;
-  user: {
-    userId: string;
-    userName: string;
-    permissionLevel: string;
-    depName: string;
-    roles?: string[];
-  } | null;
+  user: AuthUser | null;
   error: string | null;
+  actor?: AuthUser | null;
+  canPreview?: boolean;
+  preview?: { user: AuthUser; expiresAt: string } | null;
+  identityVersion?: number;
+  previewNotice?: string | null;
+  startPreview?: (userId: string) => Promise<void>;
+  stopPreview?: () => Promise<void>;
+  clearPreviewNotice?: () => void;
 }
-
-export const AuthContext = createContext<AuthState>({
-  isLoading: true,
-  isAuthenticated: false,
-  user: null,
-  error: null,
-});
-
-export function useAuth() {
-  return useContext(AuthContext);
-}
+export const AuthContext = createContext<AuthState>({ isLoading: true, isAuthenticated: false, user: null, error: null });
+export function useAuth() { return useContext(AuthContext); }
diff --git a/src/components/FeedbackFab.tsx b/src/components/FeedbackFab.tsx
index a527733..daa2727 100644
--- a/src/components/FeedbackFab.tsx
+++ b/src/components/FeedbackFab.tsx
@@ -1,5 +1,5 @@
 import { useEffect, useRef, useState } from 'react';
-import { fetchJson } from '../auth/api-client';
+import { fetchJson, fetchAuthenticated } from '../auth/api-client';
 import { useAuth } from '../auth/useAuth';
 import { canManageFeedback } from '../shared/auth/roles';
 import FeedbackHistoryDrawer from './FeedbackHistoryDrawer';
@@ -13,10 +13,8 @@ const MAX_IMG_SIZE_MB = 5;
 async function uploadImage(file: File): Promise<string> {
   const fd = new FormData();
   fd.append('file', file);
-  const token = sessionStorage.getItem('bi_jwt');
-  const res = await fetch('/api/feedback/upload', {
+  const res = await fetchAuthenticated('/api/feedback/upload', {
     method: 'POST',
-    headers: token ? { Authorization: `Bearer ${token}` } : {},
     body: fd,
   });
   const json = await res.json();
diff --git a/src/modules/admin/FeedbackAdminPage.tsx b/src/modules/admin/FeedbackAdminPage.tsx
index 28b7b65..d7e0dce 100644
--- a/src/modules/admin/FeedbackAdminPage.tsx
+++ b/src/modules/admin/FeedbackAdminPage.tsx
@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useState } from 'react';
 import { motion, AnimatePresence } from 'motion/react';
 import { Inbox, RotateCcw, X, Send, CheckCircle2, AlertCircle, Image as ImageIcon, Loader2, ArrowLeft } from 'lucide-react';
-import { fetchJson } from '../../auth/api-client';
+import { fetchJson, fetchAuthenticated } from '../../auth/api-client';
 import { EmptyState, LoadingState, PageFrame, SurfaceCard } from '../../components/ui/surface';
 
 interface FeedbackItem {
@@ -49,10 +49,9 @@ function parseScreenshots(s: FeedbackItem['screenshots']): string[] {
 }
 
 async function patchItem(id: number, data: { status?: string; reply?: string }): Promise<void> {
-  const token = sessionStorage.getItem('bi_jwt');
-  const res = await fetch(`/api/feedback/${id}`, {
+  const res = await fetchAuthenticated(`/api/feedback/${id}`, {
     method: 'PATCH',
-    headers: { 'Content-Type': 'application/json', ...(token ? { Authorization: `Bearer ${token}` } : {}) },
+    headers: { 'Content-Type': 'application/json' },
     body: JSON.stringify(data),
   });
   const json = await res.json();
diff --git a/src/modules/assets/AssetsModule.tsx b/src/modules/assets/AssetsModule.tsx
index 30c1bae..0f81070 100644
--- a/src/modules/assets/AssetsModule.tsx
+++ b/src/modules/assets/AssetsModule.tsx
@@ -24,16 +24,14 @@ import {
   Cell,
   LabelList,
 } from 'recharts';
-import type { SummaryData, TypeSummary, VehicleListItem, DeptGroup, RegionGroup, CustomerStats, RegionalInventoryStats } from './types';
-import { fetchSummary, fetchByType, fetchVehicleList, fetchWeeklyDetail, fetchDeptStats, fetchRegionStats, fetchCustomerStats, fetchInventoryStats, fetchRegionChart, fetchSubjects, fetchFlowStats, type SubjectOption } from './api';
-import type { FlowDetailItem, FlowStatsResponse, FlowType, WeeklyDetailItem } from './api';
+import type { SummaryData, TypeSummary, DeptGroup, RegionGroup, CustomerStats, RegionalInventoryStats } from './types';
+import { fetchSummary, fetchByType, fetchDeptStats, fetchRegionStats, fetchCustomerStats, fetchInventoryStats, fetchRegionChart, fetchSubjects, fetchFlowStats, type SubjectOption } from './api';
+import type { FlowDetailItem, FlowStatsResponse, FlowType } from './api';
 import {
   buildCustomerPieData,
-  buildVehicleModalRequest,
   deriveCustomerView,
   deriveDepartmentView,
   deriveInventoryView,
-  deriveModalVehicleView,
   formatLocalDateTime,
   getRecentFlowRange,
   selectFlowDetails,
@@ -45,8 +43,8 @@ import { MultiSearchSelect } from '../../components/MultiSearchSelect';
 import Blur from '../../components/Blur';
 import { ErrorState, LoadingState, PageFrame, SkeletonBlock, SurfaceCard } from '../../components/ui/surface';
 import { AssetsHeader } from './components/AssetsHeader';
-import { FlowDetailModal } from './components/FlowDetailModal';
-import { VehicleDetailModal } from './components/VehicleDetailModal';
+import { FlowAnalysisModal } from './components/FlowAnalysisModal';
+import { AssetAnalysisModal } from './components/analysis/AssetAnalysisModal';
 import { OverviewView } from './components/OverviewView';
 
 
@@ -68,7 +66,7 @@ export default function AssetsModule() {
   useEffect(() => {
     if (!assistantOpen) return;
     const previousTitle = document.title;
-    document.title = 'AI 问数 - 资产BI';
+    document.title = 'AI问数 - 资产BI';
     return () => { document.title = previousTitle; };
   }, [assistantOpen]);
   const openAssistant = () => {
@@ -110,16 +108,14 @@ export default function AssetsModule() {
   const [expandedModels, setExpandedModels] = useState<Set<string>>(new Set());
   const [expandedAssetTypes, setExpandedAssetTypes] = useState<Set<string>>(new Set());
   const [showPlateNumbers, setShowPlateNumbers] = useState<VehicleModalSelection | null>(null);
+  const closeAssetAnalysis = useCallback(() => setShowPlateNumbers(null), []);
 
   // Data state
   const [summary, setSummary] = useState<SummaryData | null>(null);
   const [processedData, setProcessedData] = useState<TypeSummary[]>([]);
-  const [modalVehicles, setModalVehicles] = useState<VehicleListItem[]>([]);
-  const [modalWeeklyDetail, setModalWeeklyDetail] = useState<WeeklyDetailItem[]>([]);
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState<string | null>(null);
   const [lastUpdate, setLastUpdate] = useState<string>(() => formatLocalDateTime(new Date()));
-  const [modalLoading, setModalLoading] = useState(false);
   const [flowRange, setFlowRange] = useState(() => getRecentFlowRange());
   const [flowStats, setFlowStats] = useState<FlowStatsResponse | null>(null);
   const [flowLoading, setFlowLoading] = useState(false);
@@ -164,17 +160,6 @@ export default function AssetsModule() {
   const [regionChartView, setRegionChartView] = useState<'region' | 'province'>('region');
   const [regionChartData, setRegionChartData] = useState<{ name: string; value: number }[]>([]);
 
-  // Modal filter state
-  const [modalFilters, setModalFilters] = useState({ plateNumber: '', model: '', brand: '', location: '' });
-  const [isModalFilterExpanded, setIsModalFilterExpanded] = useState(false);
-
-  // Reset modal filters when modal opens
-  useEffect(() => {
-    if (showPlateNumbers) {
-      setModalFilters({ plateNumber: '', model: '', brand: '', location: '' });
-    }
-  }, [showPlateNumbers]);
-
   const loadData = useCallback(async () => {
     try {
       setLoading(true);
@@ -263,30 +248,7 @@ export default function AssetsModule() {
       .catch(() => setRegionChartData([]));
   }, [regionChartView, selectedSubject]);
 
-  // Load modal vehicles
-  useEffect(() => {
-    if (!showPlateNumbers) {
-      setModalVehicles([]);
-      setModalWeeklyDetail([]);
-      return;
-    }
-    setModalLoading(true);
-    const request = buildVehicleModalRequest(showPlateNumbers, selectedSubject);
-    if (request.kind === 'weekly') {
-      setModalVehicles([]);
-      fetchWeeklyDetail(request.type, { ...request.filters, subject: selectedSubject })
-        .then(setModalWeeklyDetail)
-        .catch(() => setModalWeeklyDetail([]))
-        .finally(() => setModalLoading(false));
-      return;
-    }
-
-    setModalWeeklyDetail([]);
-    fetchVehicleList(request.params)
-      .then(setModalVehicles)
-      .catch(() => setModalVehicles([]))
-      .finally(() => setModalLoading(false));
-  }, [showPlateNumbers, selectedSubject]);
+  // Vehicle records are requested only at the final level of AssetAnalysisModal.
 
   const allTypesExpanded = processedData.length > 0 && processedData.every((t) => expandedAssetTypes.has(t.type));
 
@@ -404,18 +366,6 @@ export default function AssetsModule() {
     [customerData, deptData, customerFilters],
   );
 
-  const {
-    plates: uniqueModalPlates,
-    models: uniqueModalModels,
-    brands: uniqueModalBrands,
-    locations: uniqueModalLocations,
-    filteredVehicles: filteredModalVehicles,
-    filteredWeeklyDetails: filteredModalWeeklyDetail,
-  } = useMemo(
-    () => deriveModalVehicleView(modalVehicles, modalWeeklyDetail, modalFilters),
-    [modalVehicles, modalWeeklyDetail, modalFilters],
-  );
-
   const selectedFlowDetails = useMemo(
     () => selectFlowDetails(flowStats, selectedFlow),
     [flowStats, selectedFlow],
@@ -464,7 +414,7 @@ export default function AssetsModule() {
 
   if (assistantOpen) {
     return (
-      <Suspense fallback={<div role="status" className="min-h-screen bg-[var(--app-bg)] p-6 text-slate-700">正在加载 AI 问数页面…</div>}>
+      <Suspense fallback={<div role="status" className="min-h-screen bg-[var(--app-bg)] p-6 text-slate-700">正在加载AI问数页面…</div>}>
         <AssetAssistant key={selectedSubject || 'all'} subject={selectedSubject} appearance="light" close={closeAssistant} />
       </Suspense>
     );
@@ -1448,7 +1398,7 @@ export default function AssetsModule() {
                         <div className="space-y-1.5">
                           <label className="text-[10px] font-bold text-gray-400 uppercase tracking-wider">业务负责人</label>
                           <select className="w-full bg-white border border-gray-200 rounded-lg py-2 px-2 text-xs focus:ring-2 focus:ring-emerald-500/20 focus:border-emerald-500 outline-none transition-all cursor-pointer shadow-sm" value={draftCustomerFilters.manager} onChange={(e) => setDraftCustomerFilters(prev => ({ ...prev, manager: e.target.value }))}>
-                            <option value="">所有负责人</option>
+                            <option value="">所有业务负责人</option>
                             {customerManagersGroupedByDept
                               .filter(g => g.department !== '公务车')
                               .filter(g => !draftCustomerFilters.department || g.department === draftCustomerFilters.department)
@@ -1502,7 +1452,7 @@ export default function AssetsModule() {
               )}
               {customerFilters.manager && (
                 <span className="px-2 py-0.5 bg-emerald-50 text-emerald-700 rounded text-[10px] flex items-center gap-1">
-                  负责人: {customerFilters.manager}
+                  业务负责人: {customerFilters.manager}
                   <button onClick={() => setCustomerFilters(prev => ({...prev, manager: ''}))} className="hover:text-red-500 ml-0.5">×</button>
                 </span>
               )}
@@ -1720,28 +1670,17 @@ export default function AssetsModule() {
         )}
 
 
-        <FlowDetailModal
+        <FlowAnalysisModal
           selectedFlow={selectedFlow}
           selectedFlowDetails={selectedFlowDetails}
           setSelectedFlow={setSelectedFlow}
           exportFlowDetails={exportFlowDetails}
         />
 
-        <VehicleDetailModal
+        <AssetAnalysisModal
           selection={showPlateNumbers}
-          setSelection={setShowPlateNumbers}
-          isFilterExpanded={isModalFilterExpanded}
-          setIsFilterExpanded={setIsModalFilterExpanded}
-          filters={modalFilters}
-          setFilters={setModalFilters}
-          plates={uniqueModalPlates}
-          models={uniqueModalModels}
-          brands={uniqueModalBrands}
-          locations={uniqueModalLocations}
-          loading={modalLoading}
-          weeklyDetails={modalWeeklyDetail}
-          filteredWeeklyDetails={filteredModalWeeklyDetail}
-          filteredVehicles={filteredModalVehicles}
+          subject={selectedSubject}
+          close={closeAssetAnalysis}
         />
 
       </div>
@@ -1750,11 +1689,11 @@ export default function AssetsModule() {
         ref={assistantTrigger}
         type="button"
         onClick={openAssistant}
-        aria-label="进入 AI 问数页面"
+        aria-label="进入AI问数页面"
         className="fixed bottom-[calc(5rem+env(safe-area-inset-bottom))] right-4 z-[60] inline-flex min-h-12 items-center gap-2 rounded-full bg-gradient-to-br from-blue-600 to-cyan-500 px-4 text-sm font-semibold text-white shadow-lg shadow-blue-200 transition hover:from-blue-700 hover:to-cyan-600 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-blue-500 focus-visible:ring-offset-2 md:bottom-6 md:right-6"
       >
         <Sparkles size={20} aria-hidden="true" />
-        AI 问数
+        AI问数
       </button>
     </div>
   );
diff --git a/src/modules/assets/analytics-model.test.ts b/src/modules/assets/analytics-model.test.ts
new file mode 100644
index 0000000..036fe58
--- /dev/null
+++ b/src/modules/assets/analytics-model.test.ts
@@ -0,0 +1,208 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import type { AssetAnalysisCell } from '../../shared/assets/analytics';
+import {
+  aggregateAnalysisRows,
+  filterAnalysisCells,
+  filterCustomCells,
+  getAnalysisDimensions,
+  getAnalysisSlice,
+  getAvailableDimensions,
+  getCustomAnalysis,
+  getDefaultDimensions,
+  summarizeAnalyticsCells,
+} from './analytics-model';
+
+function cell(overrides: Partial<AssetAnalysisCell>): AssetAnalysisCell {
+  return {
+    type: '18T', model: '车型甲', region: '华东', city: '嘉兴市',
+    assetStatus: 'inventory', assetDisposition: '在库', operationKind: '可运营',
+    inventoryState: 'available', abnormalType: '不适用', abnormalAge: 'unknown',
+    department: '业务一部', manager: '负责人甲', customer: '客户甲', quantity: 1,
+    ...overrides,
+  };
+}
+
+const cells = [
+  cell({ quantity: 5 }),
+  cell({ inventoryState: 'abnormal', abnormalType: '维修', abnormalAge: '30d+', quantity: 3 }),
+  cell({ region: '华南', city: '广州市', inventoryState: 'pending', quantity: 2 }),
+  cell({ assetStatus: 'operating', assetDisposition: '租赁', operationKind: '租赁', inventoryState: 'not-applicable', quantity: 10 }),
+  cell({ type: '49T', region: '华南', city: '深圳市', assetStatus: 'operating', assetDisposition: '自营', operationKind: '自营', inventoryState: 'not-applicable', quantity: 4 }),
+  cell({ assetStatus: 'other', assetDisposition: '其他', operationKind: '未分类', inventoryState: 'not-applicable', quantity: 1 }),
+];
+
+test('inventory subset counts reconcile at group and filtered-total levels without adding to inventory', () => {
+  assert.ok(!getAvailableDimensions('inventory').includes('manager'));
+  assert.ok(!getAvailableDimensions('inventory').includes('customer'));
+  assert.ok(getAvailableDimensions('operating').includes('manager'));
+  assert.ok(getAvailableDimensions('operating').includes('customer'));
+  const result = getCustomAnalysis(cells, { view: 'inventory', dimensions: ['region', 'type'] });
+  assert.equal(result.total, 10);
+  assert.equal(result.summary.pending, 2);
+  assert.equal(result.summary.abnormal, 3);
+  assert.equal(result.rows.reduce((sum, row) => sum + row.totals.pending, 0), 2);
+  assert.equal(result.rows.reduce((sum, row) => sum + row.totals.abnormal, 0), 3);
+  const filtered = getCustomAnalysis(cells, { view: 'inventory', dimensions: ['region', 'type'], filterValues: { region: ['华东'] } });
+  assert.equal(filtered.total, 8);
+  assert.equal(filtered.summary.pending, 0);
+  assert.equal(filtered.summary.abnormal, 3);
+  assert.equal(filtered.rows[0].totals.pending, 0);
+  assert.equal(filtered.rows[0].totals.abnormal, 3);
+});
+
+test('management totals reconcile without double-counting inventory subsets', () => {
+  const summary = summarizeAnalyticsCells(cells);
+  assert.equal(summary.assets, 25);
+  assert.equal(summary.operating, 14);
+  assert.equal(summary.inventory, 10);
+  assert.equal(summary.other, 1);
+  assert.equal(summary.abnormal, 3);
+  assert.equal(summary.pending, 2);
+  assert.equal(summary.abnormalRate, 30);
+  assert.equal(summary.pendingRate, 20);
+  assert.ok(Math.abs(summary.operatingRate - 56) < 1e-10);
+});
+
+test('operating drill keeps region, city, type and operation kind as aggregate levels', () => {
+  let slice = getAnalysisSlice(cells, { view: 'operating' });
+  assert.equal(slice.dimension, 'region');
+  assert.equal(slice.total, 14);
+  assert.deepEqual(slice.rows.map(row => row.count), [10, 4]);
+  assert.equal(slice.rows.reduce((sum, row) => sum + row.share, 0), 100);
+  for (const expectedDimension of ['city', 'type', 'operationKind']) {
+    assert.equal(slice.isLeaf, false);
+    slice = getAnalysisSlice(cells, { view: 'operating', path: slice.rows[0].nextPath });
+    assert.equal(slice.dimension, expectedDimension);
+    assert.equal(slice.total, 10);
+  }
+  slice = getAnalysisSlice(cells, { view: 'operating', path: slice.rows[0].nextPath });
+  assert.equal(slice.isLeaf, true);
+  assert.equal(slice.dimension, null);
+  assert.deepEqual(slice.rows, []);
+  assert.equal(summarizeAnalyticsCells(filterAnalysisCells(cells, slice.filters, slice.metric)).assets, slice.total);
+});
+
+test('asset uses mutually exclusive stock, lease and self-operated dispositions', () => {
+  const slice = getAnalysisSlice(cells, { view: 'assets', filters: { type: '18T' } });
+  assert.equal(slice.dimension, 'assetDisposition');
+  assert.equal(slice.rows.reduce((sum, row) => sum + row.count, 0), slice.total);
+  assert.deepEqual(slice.rows.map(row => row.value).sort(), ['其他', '在库', '租赁'].sort());
+});
+
+test('fixed global dimensions are skipped and conflicting stale paths cannot widen results', () => {
+  const slice = getAnalysisSlice(cells, {
+    view: 'operating', filters: { region: '华南', type: '49T' },
+    path: [{ dimension: 'region', value: '华南' }, { dimension: 'city', value: '深圳市' }],
+  });
+  assert.equal(slice.dimension, 'operationKind');
+  assert.equal(slice.total, 4);
+  assert.deepEqual(slice.path, [{ dimension: 'city', value: '深圳市' }]);
+  const conflict = getAnalysisSlice(cells, {
+    view: 'operating', filters: { region: '华南' }, path: [{ dimension: 'region', value: '华东' }],
+  });
+  assert.equal(conflict.total, 0);
+  assert.deepEqual(conflict.rows, []);
+});
+
+test('abnormal pivot retains all three dimensions once and ends at vehicle type', () => {
+  for (const start of ['abnormalType', 'region', 'abnormalAge'] as const) {
+    const dimensions = getAnalysisDimensions('abnormal', start);
+    assert.equal(dimensions[0], start);
+    assert.equal(dimensions.at(-1), 'type');
+    assert.equal(new Set(dimensions).size, dimensions.length);
+  }
+  const missingTime = cell({ inventoryState: 'abnormal', abnormalType: '维修', abnormalAge: 'unknown', quantity: 2 });
+  const slice = getAnalysisSlice([...cells, missingTime], { view: 'abnormal', abnormalStart: 'abnormalAge' });
+  assert.equal(slice.total, 5);
+  assert.equal(slice.rows.find(row => row.value === 'unknown')?.label, '审批时间缺失');
+  assert.equal(slice.rows.find(row => row.value === 'unknown')?.count, 2);
+});
+
+test('chronological label sort preserves all duration buckets without rounding totals', () => {
+  const durationCells = ['unknown', '30d+', '0-3d', '15-30d', '7-15d', '3-7d'].map(abnormalAge => cell({
+    inventoryState: 'abnormal', abnormalAge: abnormalAge as AssetAnalysisCell['abnormalAge'],
+  }));
+  const rows = aggregateAnalysisRows(durationCells, 'abnormalAge', 'abnormal', 'label');
+  assert.deepEqual(rows.map(row => row.value), ['0-3d', '3-7d', '7-15d', '15-30d', '30d+', 'unknown']);
+  assert.equal(rows.reduce((sum, row) => sum + row.count, 0), 6);
+  assert.equal(summarizeAnalyticsCells([]).operatingRate, 0);
+});
+
+test('custom analysis combines independent dimensions and conserves the selected metric', () => {
+  const analysis = getCustomAnalysis(cells, { view: 'assets', dimensions: ['region', 'type'] });
+  assert.deepEqual(analysis.dimensions, ['region', 'type']);
+  assert.equal(analysis.total, 25);
+  assert.equal(analysis.rows.length, 3);
+  assert.equal(analysis.rows.reduce((sum, row) => sum + row.count, 0), analysis.total);
+  assert.equal(analysis.rows.find(row => row.values.region === '华东')?.count, 19);
+  assert.equal(analysis.rows.find(row => row.values.region === '华南' && row.values.type === '18T')?.count, 2);
+  assert.equal(analysis.rows.find(row => row.values.region === '华南' && row.values.type === '49T')?.count, 4);
+  assert.ok(Math.abs(analysis.rows.reduce((sum, row) => sum + row.share, 0) - 100) < 1e-10);
+});
+
+test('custom composite keys cannot collide when dimension values contain delimiters', () => {
+  const collisionCells = [
+    cell({ region: 'A · B', city: 'C', quantity: 2 }),
+    cell({ region: 'A', city: 'B · C', quantity: 3 }),
+    cell({ region: '["A","B"]', city: '"C"', quantity: 4 }),
+  ];
+  const analysis = getCustomAnalysis(collisionCells, { view: 'assets', dimensions: ['region', 'city'] });
+  assert.equal(analysis.rows.length, 3);
+  assert.equal(new Set(analysis.rows.map(row => row.key)).size, 3);
+  assert.equal(analysis.rows.reduce((sum, row) => sum + row.count, 0), 9);
+});
+
+test('custom filters OR values within a dimension and AND across dimensions', () => {
+  const filterValues = { region: ['华东', '华南'], type: ['18T'], inventoryState: ['available', 'pending'] };
+  const filtered = filterCustomCells(cells, filterValues, 'inventory');
+  assert.equal(summarizeAnalyticsCells(filtered).inventory, 7);
+  const analysis = getCustomAnalysis(cells, { view: 'inventory', dimensions: ['region'], filterValues });
+  assert.equal(analysis.total, 7);
+  assert.deepEqual(analysis.rows.map(row => row.count), [5, 2]);
+  assert.equal(analysis.rows[0].share, 5 / 7 * 100);
+  assert.equal(getCustomAnalysis(cells, { view: 'inventory', dimensions: ['region'], filterValues: { region: ['不存在区域'] } }).total, 0);
+});
+
+test('empty filter selections impose no restriction and filter-only analysis gives one total', () => {
+  const analysis = getCustomAnalysis(cells, { view: 'operating', dimensions: [], filterValues: { region: [] } });
+  assert.equal(analysis.total, 14);
+  assert.equal(analysis.rows.length, 1);
+  assert.equal(analysis.rows[0].label, '合计');
+  assert.equal(analysis.rows[0].count, 14);
+  assert.equal(analysis.rows[0].share, 100);
+  assert.deepEqual(analysis.rows[0].values, {});
+  assert.equal(analysis.summary.assets, 25);
+  assert.equal(getCustomAnalysis([], { view: 'operating', dimensions: [] }).rows.length, 0);
+  assert.equal(getCustomAnalysis([cell({})], { view: 'operating', dimensions: [] }).rows.length, 0);
+});
+
+test('custom shares use the selected metric rather than all assets in the scope', () => {
+  const analysis = getCustomAnalysis(cells, { view: 'operating', dimensions: ['region'] });
+  assert.equal(analysis.total, 14);
+  assert.equal(analysis.summary.assets, 25);
+  assert.equal(analysis.rows.find(row => row.values.region === '华东')?.share, 10 / 14 * 100);
+  assert.equal(analysis.rows.find(row => row.values.region === '华南')?.share, 4 / 14 * 100);
+  assert.equal(analysis.rows.reduce((sum, row) => sum + row.count, 0), analysis.total);
+});
+
+test('custom dimensions remove unknown, duplicate and inapplicable values without losing counts', () => {
+  const analysis = getCustomAnalysis(cells, {
+    view: 'operating',
+    dimensions: ['region', 'bogus', 'region', 'abnormalAge', 'type'] as Parameters<typeof getCustomAnalysis>[1]['dimensions'],
+  });
+  assert.deepEqual(analysis.dimensions, ['region', 'type']);
+  assert.equal(analysis.rows.reduce((sum, row) => sum + row.count, 0), 14);
+  for (const view of ['assets', 'operating', 'inventory', 'abnormal', 'pending', 'department', 'customer'] as const) {
+    assert.equal(getDefaultDimensions(view).length, 1);
+    assert.ok(getAvailableDimensions(view).includes(getDefaultDimensions(view)[0]));
+  }
+});
+
+test('custom sorting supports count order and semantic duration order', () => {
+  const ascending = getCustomAnalysis(cells, { view: 'assets', dimensions: ['region', 'type'], sort: 'count-asc' });
+  assert.deepEqual(ascending.rows.map(row => row.count), [2, 4, 19]);
+  const durationCells = ['unknown', '30d+', '0-3d'].map(abnormalAge => cell({ inventoryState: 'abnormal', abnormalAge: abnormalAge as AssetAnalysisCell['abnormalAge'] }));
+  const byLabel = getCustomAnalysis(durationCells, { view: 'abnormal', dimensions: ['abnormalAge'], sort: 'label' });
+  assert.deepEqual(byLabel.rows.map(row => row.values.abnormalAge), ['0-3d', '30d+', 'unknown']);
+});
diff --git a/src/modules/assets/analytics-model.ts b/src/modules/assets/analytics-model.ts
new file mode 100644
index 0000000..fce49c1
--- /dev/null
+++ b/src/modules/assets/analytics-model.ts
@@ -0,0 +1,365 @@
+import type {
+  AssetAnalysisCell,
+  AssetAnalysisDimension,
+  AssetAnalysisFilters,
+  AssetAnalysisMetric,
+} from '../../shared/assets/analytics';
+import { ASSET_ANALYSIS_DIMENSIONS } from '../../shared/assets/analytics';
+
+export type AnalysisView = AssetAnalysisMetric | 'department' | 'customer';
+export type AnalysisSort = 'count-desc' | 'count-asc' | 'label';
+export type AbnormalStartDimension = 'abnormalType' | 'region' | 'abnormalAge';
+export interface AnalysisPathStep {
+  dimension: AssetAnalysisDimension;
+  value: string;
+}
+
+export interface AnalysisTotals {
+  assets: number;
+  operating: number;
+  inventory: number;
+  abnormal: number;
+  pending: number;
+  other: number;
+  /** All rates are percentages, not fractions. */
+  operatingRate: number;
+  inventoryRate: number;
+  /** Abnormal and pending are inventory subsets; their denominator is inventory. */
+  abnormalRate: number;
+  pendingRate: number;
+}
+
+export interface AnalysisAggregateRow {
+  value: string;
+  label: string;
+  count: number;
+  /** Share of the current metric total, as a percentage. */
+  share: number;
+  totals: AnalysisTotals;
+}
+
+export interface AnalysisRow extends AnalysisAggregateRow {
+  nextPath: AnalysisPathStep[];
+  isLeaf: boolean;
+}
+
+export interface AnalysisOptions {
+  view: AnalysisView;
+  filters?: AssetAnalysisFilters;
+  path?: readonly AnalysisPathStep[];
+  abnormalStart?: AbnormalStartDimension;
+  sort?: AnalysisSort;
+}
+
+export interface AnalysisSlice {
+  metric: AssetAnalysisMetric;
+  dimension: AssetAnalysisDimension | null;
+  dimensions: AssetAnalysisDimension[];
+  path: AnalysisPathStep[];
+  filters: AssetAnalysisFilters;
+  rows: AnalysisRow[];
+  total: number;
+  summary: AnalysisTotals;
+  isLeaf: boolean;
+  breadcrumbs: Array<AnalysisPathStep & { label: string }>;
+}
+
+export const ANALYSIS_META: Record<AnalysisView, {
+  title: string;
+  description: string;
+  metric: AssetAnalysisMetric;
+  unit: '台';
+}> = {
+  assets: { title: '资产结构', description: '从车型看在库、租赁与自营结构，再定位区域和城市。', metric: 'assets', unit: '台' },
+  operating: { title: '运营分析', description: '按区域、城市、车型和运营状态逐层比较运营分布。', metric: 'operating', unit: '台' },
+  inventory: { title: '库存分析', description: '按区域、城市和车型定位库存。', metric: 'inventory', unit: '台' },
+  abnormal: { title: '异动分析', description: '交叉分析异动类型、区域与已异动时长，识别集中与积压。', metric: 'abnormal', unit: '台' },
+  pending: { title: '待交车分析', description: '按大区、城市和车型查看待交车分布。', metric: 'pending', unit: '台' },
+  department: { title: '部门分析', description: '从部门到业务负责人和车型，查看运营资产配置。', metric: 'operating', unit: '台' },
+  customer: { title: '客户分析', description: '从客户到车型和区域，查看运营资产集中度。', metric: 'operating', unit: '台' },
+};
+
+export const DIMENSION_LABELS: Record<AssetAnalysisDimension, string> = {
+  type: '车型', model: '型号', region: '区域', city: '城市',
+  assetStatus: '资产状态', assetDisposition: '资产用途', operationKind: '运营状态',
+  inventoryState: '库存状态', abnormalType: '异动类型', abnormalAge: '已异动时长',
+  department: '部门', manager: '业务负责人', customer: '客户',
+};
+
+const VALUE_LABELS: Partial<Record<AssetAnalysisDimension, Record<string, string>>> = {
+  assetStatus: { operating: '运营中', inventory: '在库', other: '其他状态' },
+  inventoryState: {
+    abnormal: '异动', pending: '待交车', available: '可运营', awaiting: '待运营',
+    unclassified: '未分类库存', 'not-applicable': '不适用',
+  },
+  abnormalAge: {
+    '0-3d': '不足 3 天', '3-7d': '3–7 天', '7-15d': '7–15 天',
+    '15-30d': '15–30 天', '30d+': '30 天及以上', unknown: '审批时间缺失',
+  },
+};
+
+const DIMENSION_ORDER: Partial<Record<AssetAnalysisDimension, readonly string[]>> = {
+  region: ['华东', '华南', '华北', '华中', '西南', '西北', '其他'],
+  abnormalAge: ['0-3d', '3-7d', '7-15d', '15-30d', '30d+', 'unknown'],
+  assetStatus: ['inventory', 'operating', 'other'],
+  assetDisposition: ['在库', '租赁', '自营', '其他运营', '其他'],
+  inventoryState: ['available', 'awaiting', 'pending', 'abnormal', 'unclassified', 'not-applicable'],
+};
+
+const PATHS: Record<Exclude<AnalysisView, 'abnormal'>, readonly AssetAnalysisDimension[]> = {
+  assets: ['type', 'assetDisposition', 'region', 'city'],
+  operating: ['region', 'city', 'type', 'operationKind'],
+  inventory: ['region', 'city', 'type', 'inventoryState'],
+  pending: ['region', 'city', 'type'],
+  department: ['department', 'manager', 'type'],
+  customer: ['customer', 'type', 'region'],
+};
+
+export function getAnalysisDimensions(
+  view: AnalysisView,
+  abnormalStart: AbnormalStartDimension = 'abnormalType',
+): AssetAnalysisDimension[] {
+  if (view !== 'abnormal') return [...PATHS[view]];
+  const comparisons: AbnormalStartDimension[] = ['abnormalType', 'region', 'abnormalAge'];
+  return [abnormalStart, ...comparisons.filter(dimension => dimension !== abnormalStart), 'type'];
+}
+
+export function getDimensionValueLabel(dimension: AssetAnalysisDimension, value: string): string {
+  return VALUE_LABELS[dimension]?.[value] ?? (value || '未标注');
+}
+
+/** Counts derive from the same mutually exclusive state dimensions as the server. */
+export function cellMatchesMetric(cell: AssetAnalysisCell, metric: AssetAnalysisMetric): boolean {
+  switch (metric) {
+    case 'assets': return true;
+    case 'operating': return cell.assetStatus === 'operating';
+    case 'inventory': return cell.assetStatus === 'inventory';
+    case 'abnormal': return cell.assetStatus === 'inventory' && cell.inventoryState === 'abnormal';
+    case 'pending': return cell.assetStatus === 'inventory' && cell.inventoryState === 'pending';
+  }
+}
+
+export function filterAnalysisCells(
+  cells: readonly AssetAnalysisCell[],
+  filters: AssetAnalysisFilters = {},
+  metric: AssetAnalysisMetric = 'assets',
+): AssetAnalysisCell[] {
+  const entries = Object.entries(filters).filter(([, value]) => value !== undefined && value !== '') as Array<[AssetAnalysisDimension, string]>;
+  return cells.filter(cell => cellMatchesMetric(cell, metric) && entries.every(([dimension, value]) => cell[dimension] === value));
+}
+
+const percent = (count: number, total: number): number => total > 0 ? count / total * 100 : 0;
+
+export function summarizeAnalyticsCells(cells: readonly AssetAnalysisCell[]): AnalysisTotals {
+  const totals: AnalysisTotals = {
+    assets: 0, operating: 0, inventory: 0, abnormal: 0, pending: 0, other: 0,
+    operatingRate: 0, inventoryRate: 0, abnormalRate: 0, pendingRate: 0,
+  };
+  for (const cell of cells) {
+    totals.assets += cell.quantity;
+    if (cell.assetStatus === 'operating') totals.operating += cell.quantity;
+    else if (cell.assetStatus === 'inventory') {
+      totals.inventory += cell.quantity;
+      if (cell.inventoryState === 'abnormal') totals.abnormal += cell.quantity;
+      if (cell.inventoryState === 'pending') totals.pending += cell.quantity;
+    } else totals.other += cell.quantity;
+  }
+  totals.operatingRate = percent(totals.operating, totals.assets);
+  totals.inventoryRate = percent(totals.inventory, totals.assets);
+  totals.abnormalRate = percent(totals.abnormal, totals.inventory);
+  totals.pendingRate = percent(totals.pending, totals.inventory);
+  return totals;
+}
+
+export function aggregateAnalysisRows(
+  cells: readonly AssetAnalysisCell[],
+  dimension: AssetAnalysisDimension,
+  metric: AssetAnalysisMetric = 'assets',
+  sort: AnalysisSort = 'count-desc',
+): AnalysisAggregateRow[] {
+  const groups = new Map<string, AssetAnalysisCell[]>();
+  for (const cell of cells) {
+    const value = cell[dimension];
+    const group = groups.get(value);
+    if (group) group.push(cell);
+    else groups.set(value, [cell]);
+  }
+  const total = summarizeAnalyticsCells(cells)[metric];
+  const rows: AnalysisAggregateRow[] = [];
+  for (const [value, group] of groups) {
+    const totals = summarizeAnalyticsCells(group);
+    const count = totals[metric];
+    if (count > 0) rows.push({ value, label: getDimensionValueLabel(dimension, value), count, share: percent(count, total), totals });
+  }
+  const compareLabels = (a: AnalysisAggregateRow, b: AnalysisAggregateRow) => {
+    const order = DIMENSION_ORDER[dimension];
+    if (order) {
+      const aIndex = order.indexOf(a.value);
+      const bIndex = order.indexOf(b.value);
+      const result = (aIndex < 0 ? order.length : aIndex) - (bIndex < 0 ? order.length : bIndex);
+      if (result !== 0) return result;
+    }
+    return a.label.localeCompare(b.label, 'zh-CN', { numeric: true });
+  };
+  return rows.sort((a, b) => {
+    const difference = sort === 'count-desc' ? b.count - a.count : sort === 'count-asc' ? a.count - b.count : 0;
+    return difference || compareLabels(a, b);
+  });
+}
+
+/** Keep global filters and drill selections intersected; a stale path cannot widen scope. */
+export function getAnalysisSlice(cells: readonly AssetAnalysisCell[], options: AnalysisOptions): AnalysisSlice {
+  const { view, abnormalStart = 'abnormalType', sort = 'count-desc' } = options;
+  const metric = ANALYSIS_META[view].metric;
+  const filters: AssetAnalysisFilters = {};
+  for (const [key, value] of Object.entries(options.filters ?? {})) {
+    if (value !== undefined && value !== '') filters[key as AssetAnalysisDimension] = value;
+  }
+  const dimensions = getAnalysisDimensions(view, abnormalStart).filter(dimension => filters[dimension] === undefined);
+  const path: AnalysisPathStep[] = [];
+  let conflictingPath = false;
+  for (const step of options.path ?? []) {
+    const globalValue = filters[step.dimension];
+    if (globalValue !== undefined) {
+      if (globalValue !== step.value) conflictingPath = true;
+      continue;
+    }
+    // Only a prefix of this analysis schema is valid. Unrelated old paths are discarded.
+    if (dimensions[path.length] !== step.dimension) break;
+    path.push({ dimension: step.dimension, value: step.value });
+  }
+  for (const step of path) filters[step.dimension] = step.value;
+  const scopedCells = conflictingPath ? [] : filterAnalysisCells(cells, filters);
+  const summary = summarizeAnalyticsCells(scopedCells);
+  const dimension = dimensions[path.length] ?? null;
+  const isLeaf = dimension === null;
+  const rows: AnalysisRow[] = dimension === null ? [] : aggregateAnalysisRows(scopedCells, dimension, metric, sort).map(row => ({
+    ...row,
+    nextPath: [...path, { dimension, value: row.value }],
+    isLeaf: path.length + 1 === dimensions.length,
+  }));
+  return {
+    metric, dimension, dimensions, path, filters, rows, total: summary[metric], summary, isLeaf,
+    breadcrumbs: path.map(step => ({ ...step, label: getDimensionValueLabel(step.dimension, step.value) })),
+  };
+}
+
+export type AnalysisFilterValues = Partial<Record<AssetAnalysisDimension, string[]>>;
+
+export interface CustomAnalysisRow {
+  key: string;
+  values: Partial<Record<AssetAnalysisDimension, string>>;
+  label: string;
+  count: number;
+  share: number;
+  totals: AnalysisTotals;
+}
+
+export interface CustomAnalysisOptions {
+  view: AnalysisView;
+  dimensions: readonly AssetAnalysisDimension[];
+  filterValues?: AnalysisFilterValues;
+  sort?: AnalysisSort;
+}
+
+export interface CustomAnalysis {
+  rows: CustomAnalysisRow[];
+  total: number;
+  summary: AnalysisTotals;
+  dimensions: AssetAnalysisDimension[];
+  metric: AssetAnalysisMetric;
+}
+
+const COMMON_DIMENSIONS: readonly AssetAnalysisDimension[] = [
+  'type', 'model', 'region', 'city', 'department', 'manager', 'customer',
+];
+const BUSINESS_DIMENSIONS: Record<AnalysisView, readonly AssetAnalysisDimension[]> = {
+  assets: ['assetDisposition', 'operationKind'],
+  operating: ['operationKind'],
+  inventory: ['operationKind'],
+  abnormal: ['abnormalType', 'abnormalAge'],
+  pending: [],
+  department: ['operationKind'],
+  customer: ['operationKind'],
+};
+
+/** Dimensions are choices, not a required drill sequence. */
+export function getAvailableDimensions(view: AnalysisView): AssetAnalysisDimension[] {
+  const common = view === 'inventory'
+    ? COMMON_DIMENSIONS.filter(dimension => dimension !== 'manager' && dimension !== 'customer')
+    : COMMON_DIMENSIONS;
+  return [...common, ...BUSINESS_DIMENSIONS[view]];
+}
+
+export function getDefaultDimensions(view: AnalysisView): AssetAnalysisDimension[] {
+  if (view === 'assets') return ['type'];
+  if (view === 'abnormal') return ['abnormalType'];
+  if (view === 'department') return ['department'];
+  if (view === 'customer') return ['customer'];
+  return ['region'];
+}
+
+/** Multiple values of one dimension are OR; selections across dimensions are AND. */
+export function filterCustomCells(
+  cells: readonly AssetAnalysisCell[],
+  filterValues: AnalysisFilterValues = {},
+  metric: AssetAnalysisMetric = 'assets',
+): AssetAnalysisCell[] {
+  const constraints: Array<[AssetAnalysisDimension, Set<string>]> = [];
+  for (const dimension of ASSET_ANALYSIS_DIMENSIONS) {
+    const selected = filterValues[dimension];
+    if (!Array.isArray(selected) || selected.length === 0) continue;
+    constraints.push([dimension, new Set(selected)]);
+  }
+  return cells.filter(cell => cellMatchesMetric(cell, metric)
+    && constraints.every(([dimension, selected]) => selected.has(cell[dimension])));
+}
+
+export function compareCustomLabels(a: CustomAnalysisRow, b: CustomAnalysisRow, dimensions: readonly AssetAnalysisDimension[]): number {
+  for (const dimension of dimensions) {
+    const aValue = a.values[dimension]!;
+    const bValue = b.values[dimension]!;
+    const order = DIMENSION_ORDER[dimension];
+    if (order) {
+      const aIndex = order.indexOf(aValue);
+      const bIndex = order.indexOf(bValue);
+      const difference = (aIndex < 0 ? order.length : aIndex) - (bIndex < 0 ? order.length : bIndex);
+      if (difference !== 0) return difference;
+    }
+    const difference = getDimensionValueLabel(dimension, aValue).localeCompare(getDimensionValueLabel(dimension, bValue), 'zh-CN', { numeric: true });
+    if (difference !== 0) return difference;
+  }
+  return a.key.localeCompare(b.key);
+}
+
+export function getCustomAnalysis(cells: readonly AssetAnalysisCell[], options: CustomAnalysisOptions): CustomAnalysis {
+  const metric = ANALYSIS_META[options.view].metric;
+  const available = new Set(getAvailableDimensions(options.view));
+  const dimensions = [...new Set(options.dimensions.filter(dimension => available.has(dimension)))];
+  const scopedCells = filterCustomCells(cells, options.filterValues);
+  const summary = summarizeAnalyticsCells(scopedCells);
+  const total = summary[metric];
+  const groups = new Map<string, { values: CustomAnalysisRow['values']; cells: AssetAnalysisCell[] }>();
+  for (const cell of scopedCells) {
+    // Structured JSON preserves values containing separators or quotes.
+    const entries = dimensions.map(dimension => [dimension, cell[dimension]] as const);
+    const key = JSON.stringify(entries);
+    const group = groups.get(key);
+    if (group) group.cells.push(cell);
+    else groups.set(key, { values: Object.fromEntries(entries), cells: [cell] });
+  }
+  const rows: CustomAnalysisRow[] = [];
+  for (const [key, group] of groups) {
+    const totals = summarizeAnalyticsCells(group.cells);
+    const count = totals[metric];
+    if (count <= 0) continue;
+    const label = dimensions.length === 0 ? '合计' : dimensions.map(dimension => getDimensionValueLabel(dimension, group.values[dimension]!)).join(' · ');
+    rows.push({ key, values: group.values, label, count, share: percent(count, total), totals });
+  }
+  const sort = options.sort ?? 'count-desc';
+  rows.sort((a, b) => {
+    const difference = sort === 'count-desc' ? b.count - a.count : sort === 'count-asc' ? a.count - b.count : 0;
+    return difference || compareCustomLabels(a, b, dimensions);
+  });
+  return { rows, total, summary, dimensions, metric };
+}
diff --git a/src/modules/assets/assistant/AssetAssistant.tsx b/src/modules/assets/assistant/AssetAssistant.tsx
index f6546b9..fba091e 100644
--- a/src/modules/assets/assistant/AssetAssistant.tsx
+++ b/src/modules/assets/assistant/AssetAssistant.tsx
@@ -398,7 +398,7 @@ export default function AssetAssistant({
     <section
       ref={page}
       className={`aq-shell aq-page aq-${theme}`}
-      aria-label="资产 AI 问数"
+      aria-label="AI问数"
     >
       <aside className="aq-sidebar">
         <div className="aq-brand">
@@ -406,8 +406,7 @@ export default function AssetAssistant({
             <Sparkles size={19} />
           </div>
           <div>
-            <strong>羚牛 · 资产智能</strong>
-            <span>ASSET INTELLIGENCE</span>
+            <strong>AI问数</strong>
           </div>
         </div>
         <button className="aq-new" onClick={reset}>
@@ -423,7 +422,7 @@ export default function AssetAssistant({
           }}
         >
           <MessageSquare size={16} />
-          AI 问数<span className="aq-beta">BETA</span>
+          AI问数<span className="aq-beta">BETA</span>
         </button>
         <button className="aq-nav" onClick={close}>
           <BarChart3 size={16} />
@@ -471,9 +470,9 @@ export default function AssetAssistant({
         <header className="aq-header">
           <div>
             <Sparkles size={17} />
-            <h1>AI 问数</h1>
+            <h1>AI问数</h1>
             <span className="aq-header-divider" />
-            <span className="aq-header-subtitle">你的资产分析助手</span>
+            <span className="aq-header-subtitle">用对话分析资产数据</span>
           </div>
           <div>
             <button
@@ -562,10 +561,6 @@ export default function AssetAssistant({
                   </button>
                 ))}
               </div>
-              <div className="aq-welcome-note">
-                <Database size={14} />
-                只读查询 · 真实数据 · 可追溯明细
-              </div>
             </div>
           ) : (
             <div className="aq-turns">
diff --git a/src/modules/assets/assistant/assistant.css b/src/modules/assets/assistant/assistant.css
index f9c011d..2aa0560 100644
--- a/src/modules/assets/assistant/assistant.css
+++ b/src/modules/assets/assistant/assistant.css
@@ -396,15 +396,6 @@
   font-size: 11px;
   margin-top: 5px;
 }
-.aq-welcome-note {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  gap: 6px;
-  font-size: 11px;
-  color: var(--aq-muted);
-  margin-top: 24px;
-}
 .aq-turns {
   max-width: 820px;
   margin: 0 auto;
@@ -1134,10 +1125,6 @@
     padding: 14px;
     min-height: 110px;
   }
-  .aq-welcome-note {
-    font-size: 10px;
-    margin-top: 18px;
-  }
   .aq-turns {
     padding: 19px 16px 24px;
   }
@@ -1298,9 +1285,6 @@
   .aq-prompt-grid > button > div {
     margin-bottom: 8px;
   }
-  .aq-welcome-note {
-    margin-top: 14px;
-  }
 }
 /* Keep the assistant above the global feedback launcher, below the account watermark. */
 .aq-shell {
@@ -2090,8 +2074,6 @@
   .aq-prompt-grid > button > div > svg:last-child { display: none; }
   .aq-prompt-grid > button strong { font-size: 14px; line-height: 1.5; overflow-wrap: anywhere; }
   .aq-prompt-grid > button > span { display: none; }
-  .aq-welcome-note { margin-top: 12px; font-size: 12px; line-height: 1.5; flex-wrap: nowrap; }
-  .aq-welcome-note svg { flex-shrink: 0; }
 }
 @media (prefers-reduced-motion: reduce) {
   .aq-page .aq-spin, .aq-page .aq-shimmer, .aq-page .aq-trace li { animation: none; }
diff --git a/src/modules/assets/assistant/result-presentation.test.ts b/src/modules/assets/assistant/result-presentation.test.ts
index ae48151..72ee095 100644
--- a/src/modules/assets/assistant/result-presentation.test.ts
+++ b/src/modules/assets/assistant/result-presentation.test.ts
@@ -138,7 +138,7 @@ test("copy includes regional facts and daily flow without duplicating groups or
   };
   const regionalText = copyResultText(regional, null);
   assert.match(regionalText, /华东：99台，占比73.3%/);
-  assert.match(regionalText, /其中异动1台，其中待交车0台/);
+  assert.match(regionalText, /异动1台，待交车0台/);
   assert.match(regionalText, /分析发现：[\s\S]*华东占当前可运营库存73.3%/);
   assert.ok(!regionalText.includes("测试车牌不应复制"));
 
diff --git a/src/modules/assets/assistant/result-presentation.ts b/src/modules/assets/assistant/result-presentation.ts
index 229f6bb..f4b5ef9 100644
--- a/src/modules/assets/assistant/result-presentation.ts
+++ b/src/modules/assets/assistant/result-presentation.ts
@@ -137,7 +137,7 @@ export function copyResultText(
           "分组统计：",
           ...result.groups.map(
             (group) =>
-              `${group.name}：${group.count}台${group.share === undefined ? "" : `，占比${group.share}%`}，运营率${group.rate}%${group.abnormal === undefined ? "" : `，其中异动${group.abnormal}台`}${group.pending === undefined ? "" : `，其中待交车${group.pending}台`}`,
+              `${group.name}：${group.count}台${group.share === undefined ? "" : `，占比${group.share}%`}，运营率${group.rate}%${group.abnormal === undefined ? "" : `，异动${group.abnormal}台`}${group.pending === undefined ? "" : `，待交车${group.pending}台`}`,
           ),
         ]
       : []),
diff --git a/src/modules/assets/components/AbnormalVehicleDetails.tsx b/src/modules/assets/components/AbnormalVehicleDetails.tsx
index ed55754..087321f 100644
--- a/src/modules/assets/components/AbnormalVehicleDetails.tsx
+++ b/src/modules/assets/components/AbnormalVehicleDetails.tsx
@@ -5,11 +5,13 @@ type DetailsProps = { vehicles: VehicleListItem[] };
 
 function InventoryVehicleDetails({ vehicles, kind }: DetailsProps & { kind: 'abnormal' | 'pending' }) {
   const pending = kind === 'pending';
-  const labels = pending ? ['合同编号', '客户名称（已脱敏）'] : ['异动类型', '具体工作', '申请人', '目标完成时间', '实际完成时间'];
+  const labels = pending ? ['合同编号', '客户名称（已脱敏）'] : ['异动类型', '审批通过时间', '已异动时长', '具体工作', '申请人', '预计完成时间', '实际完成时间'];
   const details = (vehicle: VehicleListItem) => pending
     ? [vehicle.pendingDelivery?.contractNo || '未提供', vehicle.pendingDelivery?.customerName || '未提供']
     : [
         vehicle.abnormalMove?.type || '未提供',
+        vehicle.abnormalMove?.approvalPassedAt ? new Date(vehicle.abnormalMove.approvalPassedAt).toLocaleString('zh-CN', { hour12: false }) : '审批时间缺失',
+        vehicle.abnormalMove?.elapsedDays != null ? `${vehicle.abnormalMove.elapsedDays.toFixed(1)} 天` : '无法计算',
         vehicle.abnormalMove?.work || '未提供',
         vehicle.abnormalMove?.applicant || '未提供',
         vehicle.abnormalMove?.targetCompletionTime || '未提供',
diff --git a/src/modules/assets/components/FlowAnalysisModal.tsx b/src/modules/assets/components/FlowAnalysisModal.tsx
new file mode 100644
index 0000000..ebf80e2
--- /dev/null
+++ b/src/modules/assets/components/FlowAnalysisModal.tsx
@@ -0,0 +1,159 @@
+import { useCallback, useMemo, useRef, useState, type Dispatch, type SetStateAction } from 'react';
+import { ArrowLeft, Download, X } from 'lucide-react';
+import type { FlowDetailItem, FlowType } from '../api';
+import type { FlowSelection } from '../model';
+import { FLOW_META } from './FlowDetailModal';
+import { orderDimensionGroups, dimensionRowSpans, dimensionParentTotals, dimensionChildCounts, dimensionCountUnit, visibleDimensionRowSpans } from '../dimension-layout';
+import { useDialogFocus } from './useDialogFocus';
+import { DimensionPicker, type DimensionPickerOption } from './analysis/DimensionPicker';
+import { ProgressiveRowsStatus } from './analysis/ProgressiveRowsStatus';
+import { useProgressiveRows } from './analysis/useProgressiveRows';
+import './flow-analysis-modal.css';
+
+interface FlowAnalysisModalProps {
+  selectedFlow: FlowSelection | null;
+  selectedFlowDetails: FlowDetailItem[];
+  setSelectedFlow: Dispatch<SetStateAction<FlowSelection | null>>;
+  exportFlowDetails: (rows?: FlowDetailItem[], title?: string) => void;
+}
+
+type Dimension = 'date' | 'department' | 'manager' | 'type';
+const DIMENSIONS: { key: Dimension; label: string }[] = [
+  { key: 'date', label: '日期' }, { key: 'department', label: '部门' },
+  { key: 'manager', label: '业务负责人' }, { key: 'type', label: '业务类型' },
+];
+const DIMENSION_LABELS: Record<Dimension, string> = { date: '日期', department: '部门', manager: '业务负责人', type: '业务类型' };
+const EMPTY_FLOW_ROWS: FlowDetailItem[] = [];
+const countLabel = (count: number) => count.toLocaleString('zh-CN');
+const dimensionValue = (row: FlowDetailItem, dimension: Dimension) => row[dimension].trim();
+const dimensionLabel = (dimension: Dimension, value: string) => dimension === 'type'
+  ? FLOW_META[value as FlowType]?.label || value
+  : value || `未填写${DIMENSION_LABELS[dimension]}`;
+
+interface FlowGroup { key: string; values: string[]; rows: FlowDetailItem[] }
+
+/** Each business event belongs to exactly one actual type; replacements also belong to the delivery scope. */
+function matchesType(row: FlowDetailItem, type: FlowType): boolean {
+  return row.type === type || (type === 'delivered' && row.type === 'replaced');
+}
+
+function groupRows(rows: FlowDetailItem[], dimensions: Dimension[]): FlowGroup[] {
+  const groups = new Map<string, FlowGroup>();
+  for (const row of rows) {
+    const values = dimensions.map(dimension => dimensionValue(row, dimension));
+    const key = JSON.stringify(values);
+    const group = groups.get(key) ?? { key, values, rows: [] };
+    group.rows.push(row);
+    groups.set(key, group);
+  }
+  return Array.from(groups.values()).sort((a, b) => b.rows.length - a.rows.length || a.key.localeCompare(b.key, 'zh-CN'));
+}
+
+export function FlowAnalysisModal(props: FlowAnalysisModalProps) {
+  if (!props.selectedFlow) return null;
+  return <FlowAnalysisContent key={JSON.stringify(props.selectedFlow)} {...props} selectedFlow={props.selectedFlow} />;
+}
+
+function FlowAnalysisContent({ selectedFlow, selectedFlowDetails, setSelectedFlow, exportFlowDetails }: Omit<FlowAnalysisModalProps, 'selectedFlow'> & { selectedFlow: FlowSelection }) {
+  const [dimensions, setDimensions] = useState<Dimension[]>(['date']);
+  const [mergeParents, setMergeParents] = useState(true);
+  const mergeActive = mergeParents && dimensions.length > 1;
+  const [filters, setFilters] = useState<Partial<Record<Dimension, string[]>>>({});
+  const [detailKey, setDetailKey] = useState<string | null>(null);
+  const dialog = useRef<HTMLDivElement>(null);
+  const scrollRoot = useRef<HTMLDivElement>(null);
+  const close = useCallback(() => setSelectedFlow(null), [setSelectedFlow]);
+  useDialogFocus(true, dialog, close);
+
+  const rows = useMemo(() => selectedFlowDetails.filter(row => matchesType(row, selectedFlow.type)
+    && ('date' in selectedFlow ? row.date === selectedFlow.date : row.date >= selectedFlow.start && row.date <= selectedFlow.end)), [selectedFlowDetails, selectedFlow]);
+  const filterOptions = useMemo(() => Object.fromEntries(DIMENSIONS.map(({ key }) => {
+    const eligible = rows.filter(row => DIMENSIONS.every(({ key: other }) => other === key || !filters[other]?.length || filters[other]!.includes(dimensionValue(row, other))));
+    const counts = new Map<string, number>();
+    for (const row of eligible) { const value = dimensionValue(row, key); counts.set(value, (counts.get(value) || 0) + 1); }
+    for (const value of filters[key] || []) if (!counts.has(value)) counts.set(value, 0);
+    return [key, [...counts].map(([value, count]) => ({ value, label: dimensionLabel(key, value), count })).sort((a, b) => b.count - a.count || a.label.localeCompare(b.label, 'zh-CN'))];
+  })) as Record<Dimension, DimensionPickerOption[]>, [rows, filters]);
+  const filteredRows = useMemo(() => rows.filter(row => DIMENSIONS.every(({ key }) => !filters[key]?.length || filters[key]!.includes(dimensionValue(row, key)))), [rows, filters]);
+  const groups = useMemo(() => {
+    const flat = groupRows(filteredRows, dimensions);
+    return mergeActive ? orderDimensionGroups(flat, dimensions.length, group => group.values, group => group.rows.length) : flat;
+  }, [filteredRows, dimensions, mergeActive]);
+  const detailGroup = useMemo(() => detailKey === null ? null : groups.find(group => group.key === detailKey), [groups, detailKey]);
+  const detailRows = detailGroup?.rows ?? EMPTY_FLOW_ROWS;
+  const showDetails = detailKey !== null;
+  const detailLabel = detailGroup && dimensions.length ? detailGroup.values.map((value, i) => `${DIMENSION_LABELS[dimensions[i]]}：${dimensionLabel(dimensions[i], value)}`).join(' · ') : '当前筛选范围';
+  const selectedRows = showDetails ? detailRows : filteredRows;
+  const { replacedCount, departmentCount } = useMemo(() => ({
+    replacedCount: selectedRows.reduce((sum, row) => sum + Number(row.type === 'replaced'), 0),
+    departmentCount: new Set(selectedRows.map(row => dimensionValue(row, 'department'))).size,
+  }), [selectedRows]);
+  const rangeLabel = 'date' in selectedFlow ? selectedFlow.date : `${selectedFlow.start} 至 ${selectedFlow.end}`;
+  const parentTotals = useMemo(() => mergeActive ? dimensionParentTotals(groups, dimensions.length, group => group.values, group => group.rows.length) : [], [groups, dimensions.length, mergeActive]);
+  const childCounts = useMemo(() => mergeActive ? dimensionChildCounts(groups, dimensions.length, group => group.values) : [], [groups, dimensions.length, mergeActive]);
+  const groupProgress = useProgressiveRows({ total: groups.length, rootRef: scrollRoot, resetKey: groups, enabled: !showDetails });
+  const detailProgress = useProgressiveRows({ total: detailRows.length, rootRef: scrollRoot, resetKey: detailRows, enabled: showDetails });
+  const shownGroups = useMemo(() => groups.slice(0, groupProgress.visibleCount), [groups, groupProgress.visibleCount]);
+  const completeSpans = useMemo(() => mergeActive ? dimensionRowSpans(groups, dimensions.length, group => group.values) : [], [groups, dimensions.length, mergeActive]);
+  const groupSpans = useMemo(() => visibleDimensionRowSpans(completeSpans, groupProgress.visibleCount), [completeSpans, groupProgress.visibleCount]);
+  const shownDetails = useMemo(() => detailRows.slice(0, detailProgress.visibleCount), [detailRows, detailProgress.visibleCount]);
+  const activeFilters = DIMENSIONS.filter(({ key }) => filters[key]?.length);
+  const resetResult = () => { setDetailKey(null); };
+  const toggleDimension = (dimension: Dimension) => {
+    setDimensions(current => current.includes(dimension) ? current.filter(value => value !== dimension) : [...current, dimension]);
+    resetResult();
+  };
+  const changeFilter = (dimension: Dimension, value: string[] | undefined) => {
+    setFilters(current => { const next = { ...current }; if (value === undefined) delete next[dimension]; else next[dimension] = value; return next; });
+    resetResult();
+  };
+
+  return <div className="bi-flow-modal-backdrop" onClick={event => { if (event.target === event.currentTarget) close(); }}>
+    <div ref={dialog} role="dialog" aria-modal="true" aria-labelledby="bi-flow-modal-title" tabIndex={-1} className="bi-flow-modal" data-testid="asset-flow-analysis-modal">
+      <header className="bi-flow-modal-header">
+        <div className="bi-flow-modal-header-row"><div><h3 id="bi-flow-modal-title">{FLOW_META[selectedFlow.type].label}分析</h3><p>{rangeLabel} · 运维签章时间 · 车次</p></div><button type="button" aria-label="关闭交还车分析" onClick={close} className="bi-flow-modal-close"><X size={16} /></button></div>
+        <p className="bi-flow-modal-definition">交车包含替换交车；业务类型按实际记录拆分，同车多笔业务分别计次。</p>
+      </header>
+
+      <div ref={scrollRoot} className="bi-flow-modal-body">
+        {!showDetails ? <div className="bi-flow-modal-controls">
+          <div className="bi-flow-modal-control-row"><span className="bi-flow-modal-control-label">分析维度</span><div className="adp-row" role="group" aria-label="选择交还车统计维度">
+            {DIMENSIONS.map(({ key, label }) => <DimensionPicker key={key} label={label} grouped={dimensions.includes(key)} order={dimensions.indexOf(key) + 1} options={filterOptions[key]} selectedValues={filters[key]} onToggleGroup={() => toggleDimension(key)} onApplyFilter={values => changeFilter(key, values)} />)}
+            <button type="button" className={`bi-flow-modal-chip${dimensions.length === 0 ? ' bi-flow-modal-chip-active' : ''}`} aria-pressed={dimensions.length === 0} onClick={() => { setDimensions([]); resetResult(); }}>仅筛选</button>
+            {activeFilters.length ? <button type="button" className="bi-flow-modal-clear" onClick={() => { setFilters({}); resetResult(); }}>清空筛选</button> : null}
+          </div></div>
+          <p className="bi-flow-modal-control-hint">点击维度名切换分组，点击右侧箭头筛选；同维度多选为“或”，不同维度为“且”。</p>
+        </div> : <div className="bi-flow-modal-detail-nav"><button type="button" className="bi-flow-modal-back" onClick={() => { setDetailKey(null); }}><ArrowLeft size={13} />返回统计</button><span>{detailLabel}</span></div>}
+
+        <div className="bi-flow-modal-summary">
+          <div><span>{showDetails ? '当前分组' : '当前筛选'}{FLOW_META[selectedFlow.type].label}</span><strong>{countLabel(selectedRows.length)}<small>车次</small></strong></div>
+          <div><span>涉及部门</span><strong>{departmentCount}<small>个</small></strong></div>
+          {selectedFlow.type === 'delivered' ? <div><span>其中：替换交车</span><strong className="bi-flow-modal-purple">{countLabel(replacedCount)}<small>车次</small></strong></div> : <div><span>{showDetails ? '占当前筛选' : '统计分组'}</span><strong>{showDetails ? `${filteredRows.length ? (selectedRows.length / filteredRows.length * 100).toFixed(1) : '0.0'}%` : groups.length}{!showDetails ? <small>组</small> : null}</strong></div>}
+        </div>
+
+        <div className="bi-flow-modal-section-heading"><div><h4>{showDetails ? '业务明细' : dimensions.length ? '组合统计' : '筛选汇总'}</h4><p>{showDetails ? `共 ${countLabel(detailRows.length)} 条业务记录` : `共 ${countLabel(groups.length)} 组 · 占比以当前筛选的 ${countLabel(filteredRows.length)} 车次为基数`}</p></div>
+          {!showDetails && dimensions.length > 1 ? <label className="bi-flow-modal-merge-toggle"><input type="checkbox" checked={mergeParents} onChange={event => { setMergeParents(event.target.checked); }} />合并上级维度</label> : null}
+          {showDetails ? <button type="button" disabled={!detailRows.length} className="bi-flow-modal-export" onClick={() => exportFlowDetails(detailRows, `${FLOW_META[selectedFlow.type].label}-${detailLabel}-明细`)}><Download size={13} />导出当前明细</button> : null}
+        </div>
+
+        {!showDetails ? groups.length ? <>
+          <div className={`bi-flow-modal-table-wrap${mergeActive ? ' is-merged' : ''}`}><table className="bi-flow-modal-table" data-testid="asset-flow-group-table"><thead><tr>{dimensions.length ? dimensions.map(dimension => <th key={dimension}>{DIMENSION_LABELS[dimension]}</th>) : <th>范围</th>}<th className="bi-flow-modal-number">车次</th><th className="bi-flow-modal-share">占比</th><th className="bi-flow-modal-action">操作</th></tr></thead><tbody>
+            {shownGroups.map((group, rowIndex) => <tr key={group.key} className={mergeActive && groupSpans[rowIndex][0] > 0 ? 'bi-flow-modal-group-start' : undefined}>
+              {dimensions.length ? group.values.map((value, index) => {
+                const span = mergeActive ? groupSpans[rowIndex][index] : 1;
+                return span === 0 ? null : <td key={dimensions[index]} rowSpan={span > 1 ? span : undefined} className={span > 1 ? 'bi-flow-modal-parent-cell' : undefined}>{dimensionLabel(dimensions[index], value)}{mergeActive && index < dimensions.length - 1 && childCounts[rowIndex][index] > 1 && <><small className="bi-flow-modal-parent-total" title="当前筛选范围内该分组的完整合计（全部筛选结果）">合计 <strong>{countLabel(parentTotals[rowIndex][index])}</strong> 车次</small><small className="bi-flow-modal-parent-children" title="当前筛选范围内下一级维度的去重分组数（全部筛选结果）">{DIMENSION_LABELS[dimensions[index + 1]]}：<strong>{countLabel(childCounts[rowIndex][index])}</strong> {dimensionCountUnit(dimensions[index + 1])}</small></>}</td>;
+              }) : <td>当前筛选范围</td>}
+              <td className="bi-flow-modal-number"><strong>{countLabel(group.rows.length)}</strong></td><td className="bi-flow-modal-share"><div><span className="bi-flow-modal-track"><span className={`bi-flow-modal-fill bi-flow-modal-fill-${selectedFlow.type}`} style={{ width: `${group.rows.length / filteredRows.length * 100}%` }} /></span><span>{(group.rows.length / filteredRows.length * 100).toFixed(1)}%</span></div></td>
+              <td className="bi-flow-modal-action"><button type="button" aria-label={`查看${group.values.map((value, i) => dimensionLabel(dimensions[i], value)).join('、') || '当前筛选范围'}明细`} onClick={() => { setDetailKey(group.key); }}>查看明细</button></td>
+            </tr>)}
+          </tbody></table></div>
+          <ProgressiveRowsStatus {...groupProgress} unit="组" />
+        </> : <div className="bi-flow-modal-empty">当前筛选范围暂无交还车数据，请调整筛选。</div>
+          : detailRows.length ? <>
+            <div className="bi-flow-modal-table-wrap" data-testid="asset-flow-final-details"><table className="bi-flow-modal-table bi-flow-modal-detail-table"><thead><tr><th>车牌</th><th>业务类型</th><th>运维签章时间</th><th>建单时间</th><th>部门</th><th>业务负责人</th><th>客户</th></tr></thead><tbody>{shownDetails.map(item => <tr key={item.id}><td>{item.plateNumber || '未登记车牌'}</td><td>{FLOW_META[item.type].label}</td><td>{item.eventTime || '—'}</td><td>{item.submitTime || '—'}</td><td>{dimensionLabel('department', dimensionValue(item, 'department'))}</td><td>{item.manager || '—'}</td><td>{item.customerName || '—'}</td></tr>)}</tbody></table></div>
+            <ProgressiveRowsStatus {...detailProgress} unit="条" />
+          </> : <div className="bi-flow-modal-empty">当前分组暂无业务明细，请返回统计调整条件。</div>}
+      </div>
+    </div>
+  </div>;
+}
diff --git a/src/modules/assets/components/FlowDetailModal.tsx b/src/modules/assets/components/FlowDetailModal.tsx
index 5935a00..e191f02 100644
--- a/src/modules/assets/components/FlowDetailModal.tsx
+++ b/src/modules/assets/components/FlowDetailModal.tsx
@@ -46,7 +46,7 @@ export function FlowDetailModal({
                         {dateLabel} · {FLOW_META[selectedFlow.type].label}明细
                       </h3>
                       <div className="mt-1 text-[12px] font-bold text-slate-300">
-                        共 {selectedFlowDetails.length} 车次，包含车牌、运维签章时间、建单时间、部门、负责人和客户
+                        共 {selectedFlowDetails.length} 车次，包含车牌、运维签章时间、建单时间、部门、业务负责人和客户
                       </div>
                     </div>
                     <button
@@ -120,7 +120,7 @@ export function FlowDetailModal({
                             <div className="mt-1 font-bold text-slate-700">{item.eventTime || '-'}</div>
                           </div>
                           <div className="rounded-xl bg-slate-50 p-2">
-                            <div className="font-black text-slate-400">负责人</div>
+                            <div className="font-black text-slate-400">业务负责人</div>
                             <div className="mt-1 font-bold text-slate-700">{item.manager || '-'}</div>
                           </div>
                           <div className="rounded-xl bg-slate-50 p-2">
diff --git a/src/modules/assets/components/analysis/AnalysisControls.tsx b/src/modules/assets/components/analysis/AnalysisControls.tsx
new file mode 100644
index 0000000..d383004
--- /dev/null
+++ b/src/modules/assets/components/analysis/AnalysisControls.tsx
@@ -0,0 +1,89 @@
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { Check, ChevronDown, Filter, Plus, RotateCcw, Search, X } from 'lucide-react';
+import type { AssetAnalysisCell, AssetAnalysisDimension as Dimension } from '../../../../shared/assets/analytics';
+import { ANALYSIS_META, DIMENSION_LABELS, filterCustomCells, getDimensionValueLabel, type AnalysisFilterValues, type AnalysisView } from '../../analytics-model';
+
+type Props = {
+  view: AnalysisView;
+  cells: AssetAnalysisCell[];
+  available: Dimension[];
+  dimensions: Dimension[];
+  setDimensions: (value: Dimension[]) => void;
+  filters: AnalysisFilterValues;
+  setFilters: (value: AnalysisFilterValues) => void;
+  reset: () => void;
+};
+
+export function AnalysisControls({ view, cells, available, dimensions, setDimensions, filters, setFilters, reset }: Props) {
+  const root = useRef<HTMLElement>(null);
+  const triggerRef = useRef<HTMLButtonElement | null>(null);
+  const [position, setPosition] = useState({ top: 0, left: 0 });
+  const [editor, setEditor] = useState<Dimension | null>(null);
+  const [draft, setDraft] = useState<string[]>([]);
+  const [query, setQuery] = useState('');
+  const activeCount = Object.values(filters).filter(values => values?.length).length;
+  useEffect(() => {
+    if (!editor) return;
+    const outside = (event: PointerEvent) => { if (!root.current?.contains(event.target as Node)) setEditor(null); };
+    document.addEventListener('pointerdown', outside);
+    return () => document.removeEventListener('pointerdown', outside);
+  }, [editor]);
+  const metric = ANALYSIS_META[view].metric;
+  const options = useMemo(() => {
+    if (!editor) return [];
+    const otherFilters = { ...filters };
+    delete otherFilters[editor];
+    const eligible = filterCustomCells(cells, otherFilters, metric);
+    const counts = new Map<string, number>();
+    eligible.forEach(cell => counts.set(cell[editor], (counts.get(cell[editor]) || 0) + cell.quantity));
+    for (const value of filters[editor] || []) if (!counts.has(value)) counts.set(value, 0);
+    return [...counts].map(([value, count]) => ({ value, count, label: getDimensionValueLabel(editor, value) }))
+      .sort((a,b) => b.count - a.count || a.label.localeCompare(b.label, 'zh-CN'))
+      .filter(option => option.label.toLocaleLowerCase().includes(query.toLocaleLowerCase()));
+  }, [cells, editor, filters, metric, query]);
+  const closeEditor = () => { setEditor(null); triggerRef.current?.focus(); };
+  const open = (dimension: Dimension, trigger: HTMLButtonElement) => {
+    triggerRef.current = trigger;
+    if (editor === dimension) { setEditor(null); return; }
+    const bounds = root.current!.getBoundingClientRect();
+    const button = trigger.getBoundingClientRect();
+    setPosition({ top: button.bottom - bounds.top + 5, left: Math.max(8, Math.min(button.left - bounds.left, bounds.width - 338)) });
+    setEditor(dimension); setDraft(filters[dimension] || []); setQuery('');
+  };
+  const apply = () => {
+    if (!editor) return;
+    const next = { ...filters };
+    if (draft.length) next[editor] = draft; else delete next[editor];
+    setFilters(next); closeEditor();
+  };
+  return <section ref={root} className="analysis-builder" aria-label="自定义分析设置">
+    <div className="analysis-builder-heading"><h3>分析维度</h3><span>点名称组合统计 · 点箭头搜索筛选</span><button className="analysis-reset" onClick={() => { reset(); setEditor(null); }}><RotateCcw size={12} />重置分析</button></div>
+    <div className="analysis-dimension-options" role="group" aria-label="选择分析维度">
+      <button aria-pressed={dimensions.length === 0} onClick={() => { setDimensions([]); setEditor(null); }}><Filter size={12} />仅筛选</button>
+      {available.map(dimension => {
+        const index = dimensions.indexOf(dimension);
+        const selected = filters[dimension] || [];
+        const filterLabel = selected.map(value => getDimensionValueLabel(dimension, value)).join('、');
+        return <div className={`analysis-dimension-column${selected.length ? ' has-filter' : ''}`} key={dimension}>
+          <button className="analysis-dimension-name" title={dimension === 'region' ? '区域划分与库存统计一致' : undefined} aria-pressed={index >= 0} onClick={() => { setDimensions(index < 0 ? [...dimensions, dimension] : dimensions.filter(item => item !== dimension)); setEditor(null); }}>
+            {index >= 0 ? <span className="analysis-dimension-order">{index + 1}</span> : <Plus size={12} />}{DIMENSION_LABELS[dimension]}
+          </button>
+          <button className="analysis-dimension-dropdown" title={selected.length ? filterLabel : `搜索、筛选${DIMENSION_LABELS[dimension]}`} aria-label={`筛选${DIMENSION_LABELS[dimension]}${selected.length ? `，已选${selected.length}项` : ''}`} aria-expanded={editor === dimension} aria-controls={editor === dimension ? 'analysis-column-filter' : undefined} onClick={event => open(dimension, event.currentTarget)}>
+            {selected.length > 0 && <><Filter size={11} /><span className="analysis-inline-filter">{selected.length === 1 ? filterLabel : `${selected.length}项`}</span></>}<ChevronDown size={12} />
+          </button>
+        </div>;
+      })}
+    </div>
+    {activeCount > 0 && <div className="analysis-active-note"><span>{activeCount} 个维度已筛选 · 同维度多选为“或”，不同维度为“且”</span><button className="analysis-text-button" onClick={() => { setFilters({}); setEditor(null); }}>清空全部筛选</button></div>}
+    {editor && <div id="analysis-column-filter" className="analysis-filter-editor analysis-column-popover" style={position} role="group" aria-label={`${DIMENSION_LABELS[editor]}筛选菜单`} onKeyDown={event => { if (event.key === 'Escape') { event.stopPropagation(); closeEditor(); } }}>
+      <div className="analysis-filter-editor-top"><strong>{DIMENSION_LABELS[editor]}</strong><span>搜索与筛选</span><button className="analysis-icon-button" aria-label="关闭筛选编辑" onClick={closeEditor}><X size={15} /></button></div>
+      <label className="analysis-filter-search"><Search size={13} /><input autoFocus aria-label="搜索筛选值" placeholder={`搜索${DIMENSION_LABELS[editor]}`} value={query} onChange={event => setQuery(event.target.value)} /></label>
+      <div className="analysis-filter-selection"><button onClick={() => setDraft([...new Set([...draft, ...options.map(option => option.value)])])}>全选{query ? '搜索结果' : ''}</button><button onClick={() => setDraft([])}>清除选择</button><span>已选 {draft.length} 项</span></div>
+      <div className="analysis-filter-options" role="group" aria-label={`${DIMENSION_LABELS[editor]}选项`}>
+        {options.map(option => <label key={option.value}><input type="checkbox" checked={draft.includes(option.value)} onChange={event => setDraft(event.target.checked ? [...draft,option.value] : draft.filter(value => value !== option.value))} /><span>{option.label}</span><small>{option.count} 台</small></label>)}
+        {!options.length && <p>没有匹配选项，可调整搜索或其他筛选。</p>}
+      </div>
+      <div className="analysis-filter-editor-bottom"><span>未选择时不限制此维度</span><button className="analysis-button" onClick={closeEditor}>取消</button><button className="analysis-primary" onClick={apply}><Check size={13} />应用</button></div>
+    </div>}
+  </section>;
+}
diff --git a/src/modules/assets/components/analysis/AssetAnalysisModal.tsx b/src/modules/assets/components/analysis/AssetAnalysisModal.tsx
new file mode 100644
index 0000000..3ba4b34
--- /dev/null
+++ b/src/modules/assets/components/analysis/AssetAnalysisModal.tsx
@@ -0,0 +1,270 @@
+import { useEffect, useMemo, useRef, useState } from 'react';
+import { ArrowLeft, BarChart3, Filter, Loader2, Search, X } from 'lucide-react';
+import { fetchJson } from '../../../../auth/api-client';
+import Blur from '../../../../components/Blur';
+import type { AssetAnalysisResponse, AssetAnalysisDimension } from '../../../../shared/assets/analytics';
+import { ANALYSIS_META, DIMENSION_LABELS, compareCustomLabels, getCustomAnalysis, getAvailableDimensions, getDefaultDimensions, getDimensionValueLabel, type AnalysisFilterValues, type CustomAnalysisRow, type AnalysisSort, type AnalysisView } from '../../analytics-model';
+import { dimensionChildCounts, dimensionCountUnit, dimensionParentTotals, dimensionRowSpans, orderDimensionGroups, visibleDimensionRowSpans } from '../../dimension-layout';
+import { AnalysisControls } from './AnalysisControls';
+import { DimensionPicker } from './DimensionPicker';
+import { ProgressiveRowsStatus } from './ProgressiveRowsStatus';
+import { useProgressiveRows } from './useProgressiveRows';
+import { buildVehicleModalRequest, formatLocalDateTime, type VehicleModalSelection } from '../../model';
+import { fetchWeeklyDetail, type WeeklyDetailItem } from '../../api';
+import type { VehicleListItem } from '../../types';
+import { AbnormalVehicleDetails, PendingVehicleDetails } from '../AbnormalVehicleDetails';
+import { useDialogFocus } from '../useDialogFocus';
+import './asset-analysis.css';
+
+type Props = { selection: VehicleModalSelection | null; subject: string | null; close: () => void };
+const number = (value: number) => value.toLocaleString('zh-CN');
+function initialView(selection: VehicleModalSelection): AnalysisView {
+  if (selection.category === 'Abnormal') return 'abnormal';
+  if (selection.category === 'Inventory') return 'inventory';
+  if (selection.category === 'Pending') return 'pending';
+  if (selection.source === 'department') return 'department';
+  if (selection.source === 'customer') return 'customer';
+  if (selection.category === 'Operating') return 'operating';
+  return 'assets';
+}
+
+export function AssetAnalysisModal({ selection, subject, close }: Props) {
+  if (!selection) return null;
+  return <AnalysisDialog key={JSON.stringify([selection, subject])} selection={selection} subject={subject} close={close} />;
+}
+
+function AnalysisDialog({ selection, subject, close }: Props & { selection: VehicleModalSelection }) {
+  const dialog = useRef<HTMLDivElement>(null);
+  const scrollRoot = useRef<HTMLDivElement>(null);
+  useDialogFocus(true, dialog, close);
+  const [data, setData] = useState<AssetAnalysisResponse | null>(null);
+  const [weekly, setWeekly] = useState<WeeklyDetailItem[]>([]);
+  const [busy, setBusy] = useState(true);
+  const [error, setError] = useState('');
+  const [retry, setRetry] = useState(0);
+  const view = initialView(selection);
+  const [dimensions, setDimensions] = useState<AssetAnalysisDimension[]>(() => getDefaultDimensions(view));
+  const [filterValues, setFilterValues] = useState<AnalysisFilterValues>({});
+  const [sort, setSort] = useState<AnalysisSort>('count-desc');
+  const [mergeParents, setMergeParents] = useState(true);
+  const [detailGroup, setDetailGroup] = useState<CustomAnalysisRow | null>(null);
+  const showDetails = detailGroup !== null;
+  const [vehicles, setVehicles] = useState<VehicleListItem[]>([]);
+  const [detailBusy, setDetailBusy] = useState(false);
+  const [detailError, setDetailError] = useState('');
+  const [detailRetry, setDetailRetry] = useState(0);
+  const [search, setSearch] = useState('');
+  const request = useMemo(() => buildVehicleModalRequest(selection, subject), [selection, subject]);
+  const endpoint = `/api/vehicles/analysis${subject ? `?subject=${encodeURIComponent(subject)}` : ''}`;
+  const available = getAvailableDimensions(view);
+  const analysis = useMemo(() => getCustomAnalysis(data?.cells ?? [], { view, dimensions, filterValues, sort }), [data, view, dimensions, filterValues, sort]);
+  const filterValuesKey = JSON.stringify(filterValues);
+  const detailFiltersKey = JSON.stringify(detailGroup?.values ?? {});
+
+  useEffect(() => {
+    let cancelled = false;
+    const controller = new AbortController();
+    setBusy(true); setError('');
+    const load = request.kind === 'weekly'
+      ? fetchWeeklyDetail(request.type, { ...request.filters, subject }).then(value => { if (!cancelled) setWeekly(value); })
+      : fetchJson<AssetAnalysisResponse>(endpoint, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ scope: request.params }), signal: controller.signal }).then(value => { if (!cancelled) setData(value); });
+    load.catch(e => { if (!cancelled) setError(e instanceof Error ? e.message : '统计加载失败'); })
+      .finally(() => { if (!cancelled) setBusy(false); });
+    return () => { cancelled = true; controller.abort(); };
+  }, [request, subject, endpoint, retry]);
+
+  useEffect(() => {
+    if (!showDetails || request.kind !== 'vehicles' || !data) return;
+    const controller = new AbortController();
+    let cancelled = false;
+    setDetailBusy(true); setDetailError(''); setVehicles([]); setSearch('');
+    fetchJson<VehicleListItem[]>(endpoint.replace('/analysis', '/analysis/details'), {
+      method: 'POST', headers: { 'Content-Type': 'application/json' }, signal: controller.signal,
+      body: JSON.stringify({ metric: analysis.metric, filters: JSON.parse(detailFiltersKey), filterValues: JSON.parse(filterValuesKey), generatedAt: data.generatedAt, scope: request.params }),
+    }).then(value => { if (!cancelled) setVehicles(value); })
+      .catch(e => { if (!cancelled) setDetailError(e instanceof Error ? e.message : '车辆明细加载失败'); })
+      .finally(() => { if (!cancelled) setDetailBusy(false); });
+    return () => { cancelled = true; controller.abort(); };
+  }, [showDetails, analysis.metric, detailFiltersKey, filterValuesKey, request, data, endpoint, detailRetry]);
+
+  const visibleVehicles = useMemo(() => {
+    const query = search.toLocaleLowerCase();
+    return vehicles.filter(vehicle => !query || [vehicle.plateNumber, vehicle.vin, vehicle.model, vehicle.city].some(value => value?.toLocaleLowerCase().includes(query)));
+  }, [vehicles, search]);
+  const detailProgress = useProgressiveRows({ total: visibleVehicles.length, rootRef: scrollRoot, resetKey: visibleVehicles, enabled: showDetails && !detailBusy && !busy, batchSize: 40 });
+  const shownVehicles = useMemo(() => visibleVehicles.slice(0, detailProgress.visibleCount), [visibleVehicles, detailProgress.visibleCount]);
+  const updateDimensions = (next: AssetAnalysisDimension[]) => { setDimensions(next); };
+  const updateFilters = (next: AnalysisFilterValues) => { setFilterValues(next); };
+  const reset = () => { updateDimensions(getDefaultDimensions(view)); updateFilters({}); setMergeParents(true); };
+  const narrowToGroup = (row: CustomAnalysisRow) => {
+    updateFilters({ ...filterValues, ...Object.fromEntries(Object.entries(row.values).map(([dimension, value]) => [dimension, [value]])) });
+  };
+  const merged = mergeParents && analysis.dimensions.length > 1;
+  const orderedGroups = useMemo(() => merged
+    ? orderDimensionGroups(analysis.rows, analysis.dimensions.length, row => analysis.dimensions.map(dimension => row.values[dimension] || ''), row => row.count, sort, (a, b, index) => compareCustomLabels(a, b, [analysis.dimensions[index]]))
+    : analysis.rows, [analysis, merged, sort]);
+  const parentTotals = useMemo(() => merged ? dimensionParentTotals(orderedGroups, analysis.dimensions.length, row => analysis.dimensions.map(dimension => row.values[dimension] || ''), row => row.count) : [], [orderedGroups, analysis.dimensions, merged]);
+  const childCounts = useMemo(() => merged ? dimensionChildCounts(orderedGroups, analysis.dimensions.length, row => analysis.dimensions.map(dimension => row.values[dimension] || '')) : [], [orderedGroups, analysis.dimensions, merged]);
+  const groupProgress = useProgressiveRows({ total: orderedGroups.length, rootRef: scrollRoot, resetKey: orderedGroups, enabled: !showDetails && !busy, batchSize: 40 });
+  const shownGroups = useMemo(() => orderedGroups.slice(0, groupProgress.visibleCount), [orderedGroups, groupProgress.visibleCount]);
+  const completeSpans = useMemo(() => merged ? dimensionRowSpans(orderedGroups, analysis.dimensions.length, row => analysis.dimensions.map(dimension => row.values[dimension] || '')) : [], [merged, orderedGroups, analysis.dimensions]);
+  const spans = useMemo(() => visibleDimensionRowSpans(completeSpans, groupProgress.visibleCount), [completeSpans, groupProgress.visibleCount]);
+  const title = request.kind === 'weekly' ? '交还车统计分析' : ANALYSIS_META[view].title;
+  const scopeLabel = selection.scopeLabel || [subject || '全部公司', selection.title].filter(Boolean).join(' · ');
+  return <div className="asset-analysis-overlay">
+    <div ref={dialog} role="dialog" aria-modal="true" aria-label={title} tabIndex={-1} className={`asset-analysis-dialog ${view === 'abnormal' ? 'analysis-amber' : ''}`}>
+      <header className="analysis-header"><div><h2><BarChart3 size={16} />{title}</h2><p>{scopeLabel}</p></div><button type="button" aria-label="关闭统计分析" onClick={close}><X size={18} /></button></header>
+      {busy ? <div className="analysis-message" role="status"><Loader2 className="animate-spin" />正在汇总统计数据…</div> : error ? <div className="analysis-message" role="alert"><p>统计数据加载失败：{error}</p><button className="analysis-button" onClick={() => setRetry(retry + 1)}>重新加载</button></div> : request.kind === 'weekly' ? <WeeklyAnalysis rows={weekly} /> : <>
+        {showDetails && <div className="analysis-navigation"><button className="analysis-back" onClick={() => setDetailGroup(null)}><ArrowLeft size={14} />返回统计分析</button><span className="analysis-detail-scope">{detailGroup.label}</span></div>}
+        <div ref={scrollRoot} className="analysis-scroll">
+          {!showDetails && <>
+            <AnalysisControls view={view} cells={data?.cells ?? []} available={available} dimensions={dimensions} setDimensions={updateDimensions} filters={filterValues} setFilters={updateFilters} reset={reset} />
+            <div className="analysis-result-bar" role="status" aria-live="polite"><span>当前结果 <strong>{number(analysis.total)}</strong> 台</span><span>{analysis.rows.length} 个分组</span><span className="analysis-result-dimensions">{analysis.dimensions.length ? analysis.dimensions.map(dimension => DIMENSION_LABELS[dimension]).join(' × ') : '仅汇总，不分组'}</span></div>
+            {view === 'inventory' && <div className="analysis-inventory-subsets" aria-label="库存子集统计"><span className="analysis-pending-count">待交车 <strong>{number(analysis.summary.pending)}</strong> 台</span><span className="analysis-abnormal-count">异动 <strong>{number(analysis.summary.abnormal)}</strong> 台</span><small>已包含在当前库存数量中</small></div>}
+            {view === 'abnormal' && <p className="analysis-definition">已异动时长＝统计时间－审批通过时间；区间左含右不含，缺失时间单列。{data && !data.approvalTimeAvailable && ' 当前未取得可用审批时间。'}</p>}
+            <div className="analysis-table-tools"><p>{merged ? '按层级汇总数量排序，相同上级合并展示。' : '筛选分组可继续分析，查看明细可核对车辆。'}</p><div className="analysis-table-options">{analysis.dimensions.length > 1 && <label className="analysis-merge-toggle"><input type="checkbox" checked={mergeParents} onChange={event => { setMergeParents(event.target.checked); }} />合并上级维度</label>}<label>排序<select aria-label="统计分组排序" value={sort} onChange={event => { setSort(event.target.value as AnalysisSort); }}><option value="count-desc">数量从多到少</option><option value="count-asc">数量从少到多</option><option value="label">维度顺序</option></select></label></div></div>
+            {analysis.total === 0 ? <div className="analysis-message"><BarChart3 size={22} /><h3>没有符合条件的数据</h3><p>移除部分筛选条件，或恢复当前入口的全部数据。</p>{Object.keys(filterValues).length > 0 && <button className="analysis-button" onClick={() => updateFilters({})}>清空筛选</button>}</div> : <>
+              <div className={`analysis-group-table${merged ? ' is-merged' : ''}`} role="region" aria-label="组合统计表" tabIndex={0}><table>
+                <thead><tr>{analysis.dimensions.length ? analysis.dimensions.map(dimension => <th key={dimension}>{DIMENSION_LABELS[dimension]}</th>) : <th>统计范围</th>}<th className="analysis-numeric">数量（台）</th>{view === 'inventory' && <><th className="analysis-numeric">待交车</th><th className="analysis-numeric">异动</th></>}<th className="analysis-numeric">占比</th><th>分析操作</th></tr></thead>
+                <tbody>{shownGroups.map((row, rowIndex) => <tr key={row.key} className={merged && spans[rowIndex][0] > 0 ? 'analysis-group-start' : undefined}>
+                  {analysis.dimensions.length ? analysis.dimensions.map((dimension, columnIndex) => {
+                    const span = merged ? spans[rowIndex][columnIndex] : 1;
+                    return span === 0 ? null : <td key={dimension} rowSpan={span} className={span > 1 ? 'analysis-parent-cell' : undefined} data-label={DIMENSION_LABELS[dimension]}><Blur>{getDimensionValueLabel(dimension, row.values[dimension] || '')}</Blur>{merged && columnIndex < analysis.dimensions.length - 1 && childCounts[rowIndex][columnIndex] > 1 && <><small className="analysis-parent-total" title="当前筛选范围内该分组的完整合计（全部筛选结果）">合计 <strong>{number(parentTotals[rowIndex][columnIndex])}</strong> 台</small><small className="analysis-parent-children" title="当前筛选范围内下一级维度的去重分组数（全部筛选结果）">{DIMENSION_LABELS[analysis.dimensions[columnIndex + 1]]}：<strong>{number(childCounts[rowIndex][columnIndex])}</strong> {dimensionCountUnit(analysis.dimensions[columnIndex + 1])}</small></>}</td>;
+                  }) : <td data-label="统计范围">当前筛选结果</td>}
+                  <td className="analysis-numeric" data-label="数量（台）"><strong>{number(row.count)}</strong></td>
+                  {view === 'inventory' && <><td className={`analysis-numeric ${row.totals.pending ? 'analysis-pending-count' : 'analysis-zero-count'}`} data-label="待交车（台）">{number(row.totals.pending)}</td><td className={`analysis-numeric ${row.totals.abnormal ? 'analysis-abnormal-count' : 'analysis-zero-count'}`} data-label="异动（台）">{number(row.totals.abnormal)}</td></>}
+                  <td className="analysis-share-cell" data-label="占比"><span>{row.share.toFixed(1)}%</span><span className="analysis-bar-track" aria-hidden="true"><span style={{ width: `${row.share}%` }} /></span></td>
+                  <td className="analysis-group-actions">{analysis.dimensions.length > 0 && <button aria-label={`筛选分组 ${row.label}`} onClick={() => narrowToGroup(row)}><Filter size={12} />筛选此组</button>}<button aria-label={`查看明细 ${row.label}`} onClick={() => setDetailGroup(row)}>查看明细</button></td>
+                </tr>)}</tbody>
+              </table></div>
+              <div className="analysis-table-total"><span>合计 {number(analysis.total)} 台{view === 'inventory' && ` · 待交车 ${number(analysis.summary.pending)} 台 · 异动 ${number(analysis.summary.abnormal)} 台`} · 占比基于当前筛选结果</span><span>100%</span></div>
+              <ProgressiveRowsStatus {...groupProgress} unit="组" />
+            </>}
+          </>}
+          {showDetails && <div className="analysis-details">
+            <div className="analysis-table-tools"><h3>车辆明细 <small>{number(visibleVehicles.length)} 台</small></h3><label className="analysis-search"><Search size={15} /><input aria-label="搜索车辆明细" placeholder="搜索车牌、VIN、型号、城市" value={search} onChange={event => { setSearch(event.target.value); }} /></label></div>
+            {detailBusy ? <div className="analysis-message" role="status"><Loader2 className="animate-spin" />正在加载车辆明细…</div> : detailError ? <div className="analysis-message" role="alert"><p>{detailError}</p><button className="analysis-button" onClick={() => setDetailRetry(detailRetry + 1)}>重新加载明细</button></div> : <>
+              {vehicles.length !== detailGroup.count && <p className="analysis-definition">车辆状态可能已更新：统计快照 {detailGroup.count} 台，当前明细 {vehicles.length} 台。</p>}
+              {(view === 'abnormal' || detailGroup.values.inventoryState === 'abnormal' || (filterValues.inventoryState?.length === 1 && filterValues.inventoryState[0] === 'abnormal')) ? <AbnormalVehicleDetails vehicles={shownVehicles} /> : (view === 'pending' || detailGroup.values.inventoryState === 'pending' || (filterValues.inventoryState?.length === 1 && filterValues.inventoryState[0] === 'pending')) ? <PendingVehicleDetails vehicles={shownVehicles} /> : <VehicleRows vehicles={shownVehicles} />}
+              <ProgressiveRowsStatus {...detailProgress} unit="台" />
+            </>}
+          </div>}
+        </div>
+        <footer className="analysis-footer"><span>统计时间 {data ? formatLocalDateTime(new Date(data.generatedAt)) : '—'} · 当前可查看范围</span><span>{showDetails ? '仅展示当前分组与筛选条件内的车辆' : '同维度筛选为“或”，不同维度筛选为“且”'}</span></footer>
+      </>}
+    </div>
+  </div>;
+}
+
+function VehicleRows({ vehicles }: { vehicles: VehicleListItem[] }) {
+  if (!vehicles.length) return <div className="analysis-message">暂无匹配车辆</div>;
+  const stateLabel = (vehicle: VehicleListItem) => {
+    const operation = ({ '1': '租赁', '2': '自营', '3': '可运营', '4': '待运营' } as Record<string, string>)[vehicle.operationStatus || ''] || vehicle.operationStatus;
+    const business = ({ Abnormal: '异动', Pending: '待交车', Inventory: '在库', Operating: '运营中' } as Record<string, string>)[vehicle.status] || vehicle.status;
+    return [business, operation].filter(Boolean).join(' · ');
+  };
+  return <div className="analysis-detail-table" tabIndex={0} role="region" aria-label="车辆明细表"><table><thead><tr>{['车牌 / VIN', '品牌 / 车型 / 型号', '省份 / 城市', '状态', '客户 / 签约公司', '部门 / 业务负责人', '所属公司'].map(label => <th key={label}>{label}</th>)}</tr></thead><tbody>{vehicles.map(vehicle => <tr key={vehicle.id}><td><Blur>{vehicle.plateNumber || vehicle.vin || '未提供'}</Blur></td><td>{vehicle.brandLabel || '—'} · {vehicle.type}<small>{vehicle.model}</small></td><td>{vehicle.province || '未标注'} / {vehicle.city || vehicle.location || '未标注'}</td><td>{stateLabel(vehicle)}</td><td><Blur>{vehicle.customerName || '—'}</Blur><small><Blur>{vehicle.orgName || '—'}</Blur></small></td><td><Blur>{vehicle.departmentName || '—'}</Blur><small><Blur>{vehicle.customerManager || '—'}</Blur></small></td><td>{vehicle.subjectOrg || '—'}</td></tr>)}</tbody></table></div>;
+}
+
+type WeeklyDimension = 'date' | 'contract_type';
+const WEEKLY_DIMENSIONS: WeeklyDimension[] = ['date', 'contract_type'];
+const EMPTY_WEEKLY_ROWS: WeeklyDetailItem[] = [];
+const weeklyDimensionValue = (row: WeeklyDetailItem, dimension: WeeklyDimension) => dimension === 'date'
+  ? row.handover_date?.slice(0, 10) || '' : row.contract_type?.trim() || '';
+
+function WeeklyAnalysis({ rows }: { rows: WeeklyDetailItem[] }) {
+  type Dimension = WeeklyDimension;
+  const dimensionsAvailable = WEEKLY_DIMENSIONS;
+  const scrollRoot = useRef<HTMLDivElement>(null);
+  const labels: Record<Dimension, string> = { date: '交还日期', contract_type: '合同类型' };
+  const [dimensions, setDimensions] = useState<Dimension[]>(['date']);
+  const [mergeParents, setMergeParents] = useState(true);
+  const mergeActive = mergeParents && dimensions.length > 1;
+  const [filters, setFilters] = useState<Partial<Record<Dimension, string[]>>>({});
+  const [detailKey, setDetailKey] = useState<string | null>(null);
+  const value = weeklyDimensionValue;
+  const label = (dimension: Dimension, entry: string) => entry || (dimension === 'date' ? '日期缺失' : '未标注');
+  const filtered = useMemo(() => rows.filter(row => dimensionsAvailable.every(dimension => !filters[dimension]?.length || filters[dimension]!.includes(value(row, dimension)))), [rows, filters]);
+  const grouped = useMemo(() => {
+    const result = new Map<string, { key: string; values: string[]; rows: WeeklyDetailItem[] }>();
+    for (const row of filtered) {
+      const values = dimensions.map(dimension => value(row, dimension));
+      const key = JSON.stringify(values);
+      const group = result.get(key) ?? { key, values, rows: [] };
+      group.rows.push(row);
+      result.set(key, group);
+    }
+    return result;
+  }, [filtered, dimensions]);
+  const groups = useMemo(() => {
+    const flatGroups = [...grouped.values()].sort((a, b) => b.rows.length - a.rows.length || a.key.localeCompare(b.key, 'zh-CN'));
+    return mergeActive ? orderDimensionGroups(flatGroups, dimensions.length, group => group.values, group => group.rows.length) : flatGroups;
+  }, [grouped, mergeActive, dimensions.length]);
+  const detailGroup = detailKey === null ? null : grouped.get(detailKey);
+  const detailRows = detailGroup?.rows ?? EMPTY_WEEKLY_ROWS;
+  const showDetails = detailKey !== null;
+  const groupLabel = (group: { values: string[] }) => dimensions.length
+    ? dimensions.map((dimension, index) => `${labels[dimension]}：${label(dimension, group.values[index])}`).join(' · ')
+    : '当前筛选结果';
+  const parentTotals = useMemo(() => mergeActive ? dimensionParentTotals(groups, dimensions.length, group => group.values, group => group.rows.length) : [], [groups, dimensions.length, mergeActive]);
+  const childCounts = useMemo(() => mergeActive ? dimensionChildCounts(groups, dimensions.length, group => group.values) : [], [groups, dimensions.length, mergeActive]);
+  const groupProgress = useProgressiveRows({ total: groups.length, rootRef: scrollRoot, resetKey: groups, enabled: !showDetails });
+  const detailProgress = useProgressiveRows({ total: detailRows.length, rootRef: scrollRoot, resetKey: detailRows, enabled: showDetails });
+  const shownGroups = useMemo(() => groups.slice(0, groupProgress.visibleCount), [groups, groupProgress.visibleCount]);
+  const completeSpans = useMemo(() => mergeActive ? dimensionRowSpans(groups, dimensions.length, group => group.values) : [], [groups, dimensions.length, mergeActive]);
+  const groupSpans = useMemo(() => visibleDimensionRowSpans(completeSpans, groupProgress.visibleCount), [completeSpans, groupProgress.visibleCount]);
+  const shownDetails = useMemo(() => detailRows.slice(0, detailProgress.visibleCount), [detailRows, detailProgress.visibleCount]);
+  const updateFilters = (next: Partial<Record<Dimension, string[]>>) => { setFilters(next); setDetailKey(null); };
+  const setFilter = (dimension: Dimension, selected: string[] | undefined) => {
+    const next = { ...filters };
+    if (selected === undefined) delete next[dimension]; else next[dimension] = selected;
+    updateFilters(next);
+  };
+  const updateDimensions = (next: Dimension[]) => { setDimensions(next); setDetailKey(null); };
+  const activeFilters = dimensionsAvailable.filter(dimension => filters[dimension]?.length);
+  const filterOptions = useMemo(() => Object.fromEntries(dimensionsAvailable.map(dimension => {
+    const eligible = rows.filter(row => dimensionsAvailable.every(other => other === dimension || !filters[other]?.length || filters[other]!.includes(value(row, other))));
+    const counts = new Map<string, number>();
+    for (const row of eligible) { const entry = value(row, dimension); counts.set(entry, (counts.get(entry) || 0) + 1); }
+    for (const entry of filters[dimension] || []) if (!counts.has(entry)) counts.set(entry, 0);
+    return [dimension, [...counts].map(([entry, count]) => ({ value: entry, label: label(dimension, entry), count })).sort((a, b) => b.count - a.count || a.label.localeCompare(b.label, 'zh-CN'))];
+  })), [rows, filters]);
+
+  return <div ref={scrollRoot} className="analysis-scroll">
+    {!showDetails ? <>
+      <div className="analysis-builder">
+        <div className="analysis-builder-heading"><h3>分析维度</h3><span>点击名称分组，点击箭头筛选</span><button type="button" className="analysis-reset" onClick={() => { updateDimensions(['date']); updateFilters({}); setMergeParents(true); }}>恢复默认</button></div>
+        <div className="adp-row" role="group" aria-label="交还车统计维度">
+          {dimensionsAvailable.map(dimension => {
+            const options = filterOptions[dimension];
+            return <DimensionPicker key={dimension} label={labels[dimension]} grouped={dimensions.includes(dimension)} order={dimensions.indexOf(dimension) + 1} options={options} selectedValues={filters[dimension]} onToggleGroup={() => updateDimensions(dimensions.includes(dimension) ? dimensions.filter(item => item !== dimension) : [...dimensions, dimension])} onApplyFilter={selected => setFilter(dimension, selected)} />;
+          })}
+          <button type="button" className="analysis-button" aria-pressed={dimensions.length === 0} onClick={() => updateDimensions([])}>仅筛选</button>
+          {activeFilters.length > 0 && <button type="button" className="analysis-text-button" onClick={() => updateFilters({})}>清空筛选</button>}
+        </div>
+      </div>
+      <div className="analysis-result-bar" role="status" aria-live="polite"><span>当前结果 <strong>{number(filtered.length)}</strong> 车次</span><span>{groups.length} 个分组</span><span className="analysis-result-dimensions">{dimensions.length ? dimensions.map(dimension => labels[dimension]).join(' × ') : '仅汇总，不分组'}</span></div>
+      <div className="analysis-table-tools"><p>筛选分组可继续分析，查看明细可核对业务记录。</p>{dimensions.length > 1 && <label className="analysis-merge-toggle"><input type="checkbox" checked={mergeParents} onChange={event => { setMergeParents(event.target.checked); }} />合并上级维度</label>}</div>
+      {groups.length ? <>
+        <div className={`analysis-group-table${mergeActive ? ' is-merged' : ''}`} role="region" aria-label="交还车组合统计表" tabIndex={0}><table><thead><tr>{dimensions.length ? dimensions.map(dimension => <th key={dimension}>{labels[dimension]}</th>) : <th>统计范围</th>}<th className="analysis-numeric">数量（车次）</th><th className="analysis-numeric">占比</th><th>分析操作</th></tr></thead><tbody>
+          {shownGroups.map((group, rowIndex) => <tr key={group.key} className={mergeActive && groupSpans[rowIndex][0] > 0 ? 'analysis-group-start' : undefined}>
+            {dimensions.length ? dimensions.map((dimension, index) => {
+              const span = mergeActive ? groupSpans[rowIndex][index] : 1;
+              return span === 0 ? null : <td data-label={labels[dimension]} key={dimension} rowSpan={span > 1 ? span : undefined} className={span > 1 ? 'analysis-parent-cell' : undefined}>{label(dimension, group.values[index])}{mergeActive && index < dimensions.length - 1 && childCounts[rowIndex][index] > 1 && <><small className="analysis-parent-total" title="当前筛选范围内该分组的完整合计（全部筛选结果）">合计 <strong>{number(parentTotals[rowIndex][index])}</strong> 车次</small><small className="analysis-parent-children" title="当前筛选范围内下一级维度的去重分组数（全部筛选结果）">{labels[dimensions[index + 1]]}：<strong>{number(childCounts[rowIndex][index])}</strong> {dimensionCountUnit(dimensions[index + 1])}</small></>}</td>;
+            }) : <td data-label="统计范围">当前筛选结果</td>}
+            <td className="analysis-numeric" data-label="数量（车次）"><strong>{number(group.rows.length)}</strong></td><td className="analysis-share-cell" data-label="占比"><span>{(group.rows.length / filtered.length * 100).toFixed(1)}%</span><span className="analysis-bar-track" aria-hidden="true"><span style={{ width: `${group.rows.length / filtered.length * 100}%` }} /></span></td>
+            <td className="analysis-group-actions">{dimensions.length > 0 && <button type="button" aria-label={`筛选分组 ${groupLabel(group)}`} onClick={() => updateFilters({ ...filters, ...Object.fromEntries(dimensions.map((dimension, index) => [dimension, [group.values[index]]])) })}><Filter size={12} />筛选此组</button>}<button type="button" aria-label={`查看明细 ${groupLabel(group)}`} onClick={() => { setDetailKey(group.key); }}>查看明细</button></td>
+          </tr>)}
+        </tbody></table></div>
+        <div className="analysis-table-total"><span>合计 {number(filtered.length)} 车次 · 占比基于当前筛选结果</span><span>100%</span></div>
+        <ProgressiveRowsStatus {...groupProgress} unit="组" />
+      </> : <div className="analysis-message"><p>没有符合条件的数据，请调整筛选。</p>{activeFilters.length > 0 && <button type="button" className="analysis-button" onClick={() => updateFilters({})}>清空筛选</button>}</div>}
+    </> : <>
+      <div className="analysis-navigation"><button type="button" className="analysis-back" onClick={() => { setDetailKey(null); }}><ArrowLeft size={14} />返回统计分析</button><span className="analysis-detail-scope">{detailGroup ? groupLabel(detailGroup) : '当前分组'}</span></div>
+      <div className="analysis-table-tools"><h3>交还车业务明细 <small>{number(detailRows.length)} 车次</small></h3></div>
+      {detailRows.length ? <><div className="analysis-detail-table" role="region" aria-label="交还车业务明细表" tabIndex={0}><table><thead><tr><th>车牌</th><th>日期</th><th>合同类型</th><th>客户</th></tr></thead><tbody>{shownDetails.map((row, index) => <tr key={`${row.truck_id}-${index}`}><td><Blur>{row.plate_number || '—'}</Blur></td><td>{row.handover_date || '—'}</td><td>{row.contract_type || '—'}</td><td><Blur>{row.customer_name || '—'}</Blur></td></tr>)}</tbody></table></div>
+        <ProgressiveRowsStatus {...detailProgress} unit="条" />
+      </> : <p className="analysis-message">当前分组暂无数据，请返回统计分析。</p>}
+    </>}
+  </div>;
+}
diff --git a/src/modules/assets/components/analysis/DimensionPicker.tsx b/src/modules/assets/components/analysis/DimensionPicker.tsx
new file mode 100644
index 0000000..ff642ba
--- /dev/null
+++ b/src/modules/assets/components/analysis/DimensionPicker.tsx
@@ -0,0 +1,77 @@
+import { useEffect, useId, useRef, useState } from 'react';
+import { ChevronDown, Filter, Search, X } from 'lucide-react';
+import './dimension-picker.css';
+
+export interface DimensionPickerOption { value: string; label: string; count?: number }
+export interface DimensionPickerProps {
+  label: string;
+  grouped: boolean;
+  order?: number;
+  options: DimensionPickerOption[];
+  selectedValues?: string[];
+  onToggleGroup: () => void;
+  onApplyFilter: (values: string[] | undefined) => void;
+}
+
+/** A grouping switch and an independently applied, searchable multi-value filter. */
+export function DimensionPicker({ label, grouped, order, options, selectedValues, onToggleGroup, onApplyFilter }: DimensionPickerProps) {
+  const [open, setOpen] = useState(false);
+  const [draft, setDraft] = useState<string[]>([]);
+  const [query, setQuery] = useState('');
+  const [position, setPosition] = useState({ left: 8, top: 8, maxHeight: 420 });
+  const root = useRef<HTMLDivElement>(null);
+  const trigger = useRef<HTMLButtonElement>(null);
+  const search = useRef<HTMLInputElement>(null);
+  const menuId = useId();
+  const selected = selectedValues ?? [];
+  const labels = new Map(options.map(option => [option.value, option.label]));
+  const selectedLabel = selected.map(value => labels.get(value) || value || '未标注').join('、');
+  const visible = options.filter(option => option.label.toLocaleLowerCase().includes(query.trim().toLocaleLowerCase()));
+  const close = (restoreFocus = true) => { setOpen(false); if (restoreFocus) trigger.current?.focus(); };
+  const show = () => {
+    if (open) { close(); return; }
+    setDraft([...selected]); setQuery(''); setOpen(true);
+  };
+
+  useEffect(() => {
+    if (!open) return;
+    const place = () => {
+      const rect = trigger.current?.getBoundingClientRect();
+      if (!rect) return;
+      const width = Math.min(320, window.innerWidth - 16);
+      const roomBelow = window.innerHeight - rect.bottom - 12;
+      const useAbove = roomBelow < 220 && rect.top > roomBelow;
+      const height = Math.min(420, Math.max(160, useAbove ? rect.top - 12 : roomBelow));
+      setPosition({ left: Math.max(8, Math.min(rect.left, window.innerWidth - width - 8)), top: useAbove ? Math.max(8, rect.top - height - 5) : rect.bottom + 5, maxHeight: height });
+    };
+    place();
+    const frame = requestAnimationFrame(() => search.current?.focus());
+    const outside = (event: PointerEvent) => { if (!root.current?.contains(event.target as Node)) setOpen(false); };
+    document.addEventListener('pointerdown', outside);
+    window.addEventListener('resize', place);
+    window.addEventListener('scroll', place, true);
+    return () => { cancelAnimationFrame(frame); document.removeEventListener('pointerdown', outside); window.removeEventListener('resize', place); window.removeEventListener('scroll', place, true); };
+  }, [open]);
+
+  return <div ref={root} className={`analysis-dimension-picker${grouped ? ' adp-grouped' : ''}${selected.length ? ' adp-filtered' : ''}`}>
+    <div className="adp-split">
+      <button type="button" className="adp-name" aria-pressed={grouped} onClick={() => { setOpen(false); onToggleGroup(); }} title={`点击${grouped ? '取消' : '加入'}${label}分组`}>
+        {grouped && order !== undefined ? <span className="adp-order">{order}</span> : null}{label}
+      </button>
+      <button ref={trigger} type="button" className="adp-arrow" aria-label={`筛选${label}`} aria-expanded={open} aria-controls={open ? menuId : undefined} aria-haspopup="dialog" onClick={show} title={selected.length ? `${label}已筛选 ${selected.length} 项：${selectedLabel}` : `筛选${label}`}>
+        {selected.length ? <><Filter size={11} /><span>{selected.length}</span></> : null}<ChevronDown size={12} />
+      </button>
+    </div>
+    {selected.length ? <button type="button" className="adp-selected" onClick={show} title={selectedLabel}>{selected.length === 1 ? selectedLabel : `${selectedLabel}（${selected.length} 项）`}</button> : null}
+    {open ? <div id={menuId} role="dialog" aria-label={`${label}筛选菜单`} className="adp-menu" style={{ left: position.left, top: position.top, maxHeight: position.maxHeight }} onKeyDown={event => { if (event.key === 'Escape') { event.preventDefault(); event.stopPropagation(); close(); } }}>
+      <div className="adp-menu-heading"><strong>{label}</strong><button type="button" aria-label={`关闭${label}筛选`} onClick={() => close()}><X size={14} /></button></div>
+      <label className="adp-search"><Search size={13} /><input ref={search} aria-label={`搜索${label}筛选值`} value={query} onChange={event => setQuery(event.target.value)} placeholder="搜索选项" /></label>
+      <div className="adp-select-tools"><button type="button" disabled={!visible.length} onClick={() => setDraft(current => [...new Set([...current, ...visible.map(option => option.value)])])}>全选搜索结果</button><button type="button" onClick={() => setDraft([])}>清除选择</button><span>{draft.length} 项已选</span></div>
+      <div className="adp-options" role="group" aria-label={`${label}可选值`}>
+        {visible.map(option => <label key={option.value}><input type="checkbox" checked={draft.includes(option.value)} onChange={event => setDraft(current => event.target.checked ? [...current, option.value] : current.filter(value => value !== option.value))} /><span>{option.label}</span>{option.count !== undefined ? <small>{option.count.toLocaleString('zh-CN')}</small> : null}</label>)}
+        {!visible.length ? <p>没有匹配选项</p> : null}
+      </div>
+      <div className="adp-menu-footer"><span>同维度多选为“或”；未选表示不限</span><div><button type="button" onClick={() => close()}>取消</button><button type="button" className="adp-apply" onClick={() => { onApplyFilter(draft.length ? draft : undefined); close(); }}>应用筛选</button></div></div>
+    </div> : null}
+  </div>;
+}
diff --git a/src/modules/assets/components/analysis/ProgressiveRowsStatus.tsx b/src/modules/assets/components/analysis/ProgressiveRowsStatus.tsx
new file mode 100644
index 0000000..4cfa77a
--- /dev/null
+++ b/src/modules/assets/components/analysis/ProgressiveRowsStatus.tsx
@@ -0,0 +1,18 @@
+import type { RefCallback } from 'react';
+import './progressive-rows.css';
+
+interface Props {
+  visibleCount: number;
+  total: number;
+  hasMore: boolean;
+  loadMore: () => void;
+  sentinelRef: RefCallback<HTMLDivElement>;
+  unit?: string;
+}
+
+export function ProgressiveRowsStatus({ visibleCount, total, hasMore, loadMore, sentinelRef, unit = '条' }: Props) {
+  return <div ref={sentinelRef} className="analysis-progressive-status">
+    <span role="status" aria-live="polite">已加载 {visibleCount.toLocaleString('zh-CN')} / {total.toLocaleString('zh-CN')} {unit}</span>
+    {hasMore ? <><span className="analysis-progressive-hint">下滚继续加载</span><button type="button" onClick={loadMore}>加载更多</button></> : <span className="analysis-progressive-hint">已显示全部</span>}
+  </div>;
+}
diff --git a/src/modules/assets/components/analysis/asset-analysis.css b/src/modules/assets/components/analysis/asset-analysis.css
new file mode 100644
index 0000000..41ce7e2
--- /dev/null
+++ b/src/modules/assets/components/analysis/asset-analysis.css
@@ -0,0 +1,172 @@
+.asset-analysis-overlay { position:fixed; inset:0; z-index:70; background:rgb(0 0 0 / .4); backdrop-filter:blur(4px); display:flex; align-items:center; justify-content:center; padding:24px; }
+.asset-analysis-dialog { --analysis-line:#d5deea; --analysis-boundary:#b8c6d8; --analysis-accent:#2563eb; --analysis-tint:#eff6ff; display:flex; flex-direction:column; width:min(1040px,100%); max-height:90dvh; min-height:430px; background:white; border-radius:12px; box-shadow:0 24px 60px rgb(15 23 42 / .2); overflow:hidden; color:#334155; font-size:12px; outline:none; }
+.asset-analysis-dialog.analysis-amber { --analysis-accent:#b45309; --analysis-tint:#fffbeb; }
+.asset-analysis-dialog button { cursor:pointer; font:inherit; transition:background-color .15s,color .15s; }
+.asset-analysis-dialog button:disabled { cursor:default; opacity:.45; }
+.asset-analysis-dialog button:focus-visible,.asset-analysis-dialog input:focus-visible,.asset-analysis-dialog select:focus-visible { outline:2px solid #2563eb; outline-offset:2px; }
+.analysis-header { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:14px 18px; background:#1e293b; color:white; flex-shrink:0; }
+.analysis-header h2 { display:flex; align-items:center; gap:8px; font-size:14px; font-weight:650; }
+.analysis-header h2 svg { color:#60a5fa; }
+.analysis-header p { font-size:11px; color:#cbd5e1; margin-top:4px; line-height:1.5; overflow-wrap:anywhere; }
+.analysis-header button { padding:9px; border-radius:6px; flex-shrink:0; }
+.analysis-header button:hover { background:#334155; }
+.analysis-scroll { overflow-y:auto; overscroll-behavior:contain; min-height:0; padding:16px 18px; flex:1; }
+.analysis-builder { border:1px solid #e2e8f0; border-radius:8px; padding:12px; background:#fff; }
+.analysis-builder-heading { display:flex; align-items:center; flex-wrap:wrap; gap:8px; margin-bottom:10px; }
+.analysis-builder-heading h3 { font-size:12px; font-weight:650; color:#1e293b; }
+.analysis-builder-heading>span { color:#64748b; font-size:11px; }
+.analysis-reset { display:inline-flex; align-items:center; gap:4px; color:#64748b; margin-left:auto; padding:3px 0; font-size:11px!important; }
+.analysis-reset:hover { color:#2563eb; }
+.analysis-dimension-options { display:flex; flex-wrap:wrap; gap:6px; }
+.analysis-dimension-options button { display:inline-flex; align-items:center; gap:5px; min-height:30px; border:1px solid #e2e8f0; background:#f8fafc; color:#475569; padding:5px 9px; border-radius:5px; font-size:12px; }
+.analysis-dimension-options button:hover { border-color:#93c5fd; }
+.analysis-dimension-options button[aria-pressed=true] { background:#eff6ff; color:#1d4ed8; border-color:#93c5fd; }
+.analysis-dimension-order { display:inline-flex; align-items:center; justify-content:center; width:15px; height:15px; font-size:10px; border-radius:3px; background:#2563eb; color:white; }
+.analysis-filter-row { display:flex; align-items:center; flex-wrap:wrap; gap:6px; border-top:1px solid #edf2f7; margin-top:12px; padding-top:10px; }
+.analysis-filter-label { display:inline-flex; align-items:center; gap:4px; color:#475569; font-weight:600; margin-right:3px; }
+.analysis-filter-chip { display:inline-flex; align-items:center; max-width:100%; background:#f1f5f9; border:1px solid #e2e8f0; border-radius:5px; overflow:hidden; }
+.analysis-filter-chip button { padding:5px 7px; min-width:0; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
+.analysis-filter-chip button:hover { background:#e2e8f0; }
+.analysis-filter-chip button:last-child { flex-shrink:0; padding:6px; }
+.analysis-add-filter { display:inline-flex; align-items:center; gap:3px; border:1px dashed #94a3b8; border-radius:5px; padding:5px 7px; color:#475569; background:white; }
+.analysis-add-filter:hover { color:#2563eb; border-color:#2563eb; }
+.analysis-filter-empty { color:#64748b; font-size:11px; }
+.analysis-text-button { color:#2563eb; padding:5px; }
+.analysis-filter-editor { margin-top:12px; border:1px solid #bfdbfe; border-radius:7px; box-shadow:0 4px 16px rgb(15 23 42 / .05); background:#fff; }
+.analysis-filter-editor-top { display:flex; align-items:center; gap:12px; padding:10px 12px; border-bottom:1px solid #e2e8f0; }
+.analysis-filter-editor-top>label:first-child { display:flex; align-items:center; gap:6px; white-space:nowrap; }
+.analysis-filter-editor select { padding:5px 8px; border:1px solid #cbd5e1; background:white; border-radius:5px; }
+.analysis-filter-search { display:flex; align-items:center; gap:6px; min-width:0; margin-left:auto; border:1px solid #e2e8f0; padding:6px 8px; border-radius:5px; color:#64748b; }
+.analysis-filter-search input { min-width:0; width:130px; outline:none; color:#334155; }
+.analysis-icon-button { padding:5px; }
+.analysis-filter-options { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:3px 12px; padding:8px 12px; max-height:190px; overflow:auto; }
+.analysis-filter-options label { display:flex; align-items:center; gap:7px; min-width:0; padding:7px 4px; cursor:pointer; border-radius:4px; }
+.analysis-filter-options label:hover { background:#f8fafc; }
+.analysis-filter-options input { accent-color:#2563eb; flex-shrink:0; }
+.analysis-filter-options label span { overflow-wrap:anywhere; }
+.analysis-filter-options small { margin-left:auto; color:#64748b; font-size:11px; white-space:nowrap; }
+.analysis-filter-options>p { grid-column:1/-1; padding:12px 0; color:#64748b; }
+.analysis-filter-editor-bottom { display:flex; align-items:center; flex-wrap:wrap; gap:8px; border-top:1px solid #e2e8f0; padding:8px 12px; }
+.analysis-filter-editor-bottom>span { color:#64748b; font-size:11px; margin-right:auto; }
+.analysis-primary,.analysis-button { display:inline-flex; align-items:center; justify-content:center; gap:5px; min-height:30px; padding:6px 10px; font-size:12px; border-radius:5px; background:#2563eb; color:#fff; }
+.analysis-primary:hover { background:#1d4ed8; }
+.analysis-button { background:#f1f5f9; color:#475569; }
+.analysis-result-bar { display:flex; align-items:center; gap:18px; flex-wrap:wrap; padding:13px 0 8px; color:#64748b; }
+.analysis-result-bar strong { font-size:22px; font-weight:650; color:var(--analysis-accent); font-variant-numeric:tabular-nums; margin:0 5px; }
+.analysis-result-dimensions { margin-left:auto; font-size:11px; max-width:65%; line-height:1.7; }
+.analysis-inventory-subsets { display:flex; align-items:center; flex-wrap:wrap; gap:6px 16px; margin:2px 0 12px; font-size:12px; }
+.analysis-inventory-subsets strong { font-size:13px; font-weight:600; font-variant-numeric:tabular-nums; }
+.analysis-inventory-subsets small { font-size:11px; color:#64748b; }
+.analysis-pending-count { color:#2563eb; font-variant-numeric:tabular-nums; }
+.analysis-abnormal-count { color:#b45309; font-variant-numeric:tabular-nums; }
+.analysis-zero-count { color:#94a3b8; font-variant-numeric:tabular-nums; }
+.analysis-definition { font-size:11px; line-height:1.7; padding:8px 10px; background:#fffbeb; color:#92400e; border-radius:5px; margin:8px 0; }
+.analysis-table-tools { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:10px; margin:10px 0; }
+.analysis-table-tools h3 { font-size:13px; font-weight:600; color:#1e293b; }
+.analysis-table-tools h3 small { font-size:11px; color:#64748b; font-weight:400; margin-left:6px; }
+.analysis-table-tools>p { font-size:11px; color:#64748b; }
+.analysis-table-tools label { display:flex; align-items:center; gap:6px; font-size:11px; color:#64748b; }
+.analysis-table-tools select { border:1px solid #e2e8f0; border-radius:5px; padding:5px 7px; background:white; color:#475569; font-size:11px; }
+.analysis-group-table { overflow:auto; border:1px solid var(--analysis-boundary); border-radius:6px 6px 0 0; }
+.analysis-group-table table { border-collapse:collapse; width:100%; font-size:12px; }
+.analysis-group-table th { padding:10px 12px; color:#64748b; font-weight:500; text-align:left; background:#f8fafc; white-space:nowrap; }
+.analysis-group-table td { padding:10px 12px; border-top:1px solid var(--analysis-line); min-width:84px; max-width:230px; overflow-wrap:anywhere; }
+.analysis-group-table tbody tr:hover { background:#f8fafc; }
+.analysis-group-table .analysis-numeric { text-align:right; white-space:nowrap; }
+.analysis-group-table .analysis-numeric strong { font-size:14px; font-weight:650; color:var(--analysis-accent); font-variant-numeric:tabular-nums; }
+.analysis-share-cell { min-width:90px!important; text-align:right; font-variant-numeric:tabular-nums; color:#64748b; }
+.analysis-bar-track { display:block; height:4px; background:#f1f5f9; border-radius:2px; overflow:hidden; margin-top:5px; }
+.analysis-bar-track>span { display:block; height:100%; background:var(--analysis-accent); border-radius:2px; }
+.analysis-group-actions { white-space:nowrap; min-width:170px!important; }
+.analysis-group-actions button { display:inline-flex; align-items:center; gap:4px; padding:5px 6px; color:#2563eb; font-size:11px; border-radius:4px; }
+.analysis-group-actions button:hover { background:#eff6ff; }
+.analysis-group-actions button+button { margin-left:5px; }
+.analysis-table-total { display:flex; justify-content:space-between; gap:12px; padding:10px 12px; color:#64748b; font-size:11px; background:#f8fafc; border:1px solid var(--analysis-boundary); border-top:0; border-radius:0 0 6px 6px; }
+.analysis-navigation { display:flex; align-items:center; justify-content:space-between; gap:12px; padding:9px 18px; border-bottom:1px solid #e2e8f0; flex-shrink:0; }
+.analysis-navigation nav { display:flex; flex-wrap:wrap; gap:6px; }
+.analysis-back { display:flex; gap:5px; align-items:center; font-size:12px; color:#2563eb; white-space:nowrap; padding:5px 0; }
+.analysis-detail-scope { color:#64748b; font-size:11px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; }
+.analysis-search { border:1px solid #e2e8f0; padding:6px 8px; border-radius:5px; }
+.analysis-search input { width:220px; color:#334155; outline:none; min-width:0; font-size:12px; }
+.analysis-detail-table { overflow-x:auto; }
+.analysis-detail-table table { width:100%; min-width:600px; border-collapse:collapse; font-size:12px; }
+.analysis-detail-table th { font-weight:600; text-align:left; background:#f8fafc; padding:10px; color:#64748b; }
+.analysis-detail-table td { padding:10px; border-bottom:1px solid #e2e8f0; }
+.analysis-detail-table td small { display:block; font-size:11px; color:#64748b; margin-top:3px; }
+.analysis-details .text-base { font-size:13px; }.analysis-details .text-sm { font-size:12px; }
+.analysis-message { display:flex; flex-direction:column; align-items:center; justify-content:center; gap:12px; padding:40px 16px; text-align:center; color:#64748b; flex:1; font-size:12px; }
+.analysis-message h3 { font-size:13px; font-weight:600; color:#334155; }
+.analysis-footer { display:flex; justify-content:space-between; gap:8px; flex-wrap:wrap; font-size:10px; color:#64748b; padding:9px 18px; background:#f8fafc; border-top:1px solid #e2e8f0; flex-shrink:0; }
+/* Legacy weekly entries share the compact analysis vocabulary. */
+.analysis-summary { display:flex; align-items:center; justify-content:space-between; gap:15px; background:var(--analysis-tint); padding:12px; border-radius:6px; margin:10px 0; }
+.analysis-summary strong { display:block; font-size:22px; color:var(--analysis-accent); }.analysis-summary small { font-size:11px; margin-left:4px; }
+.analysis-row { display:grid; grid-template-columns:1fr 1fr auto 16px; gap:12px; width:100%; text-align:left; align-items:center; padding:12px; border-bottom:1px solid #e2e8f0; }
+@media(max-width:640px) {
+  .asset-analysis-overlay { padding:8px; }.asset-analysis-dialog { max-height:94dvh; min-height:58dvh; border-radius:10px; }
+  .analysis-header { padding:12px; }.analysis-scroll { padding:12px; }.analysis-builder { padding:10px; }
+  .analysis-builder-heading>span { font-size:10px; }.analysis-dimension-options { gap:5px; }.analysis-dimension-options button { min-height:34px; padding:6px 8px; }
+  .analysis-filter-row { gap:6px; }.analysis-filter-empty { width:100%; margin-top:1px; font-size:10px; }
+  .analysis-filter-editor-top { flex-wrap:wrap; gap:8px; padding:8px; }.analysis-filter-search { order:3; width:100%; }.analysis-filter-search input { width:100%; }.analysis-filter-editor-top .analysis-icon-button { margin-left:auto; }
+  .analysis-filter-options { grid-template-columns:repeat(2,minmax(0,1fr)); gap:2px 8px; padding:8px; }.analysis-filter-options label { padding:9px 2px; }.analysis-filter-options small { font-size:10px; }
+  .analysis-filter-editor-bottom { gap:6px; padding:8px; }.analysis-filter-editor-bottom>span { width:100%; }.analysis-filter-editor-bottom .analysis-text-button { margin-right:auto; }
+  .analysis-result-bar { gap:10px; }.analysis-result-dimensions { max-width:100%; width:100%; margin:0; font-size:10px; }
+  .analysis-table-tools>p { font-size:10px; }.analysis-definition { font-size:10px; }
+  .analysis-group-table { border:0; overflow:visible; }.analysis-group-table table,.analysis-group-table tbody { display:block; }.analysis-group-table thead { display:none; }
+  .analysis-group-table tr { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); border:1px solid #e2e8f0; border-radius:6px; margin-bottom:8px; padding:7px; gap:4px 8px; }
+  .analysis-group-table td { display:flex; flex-direction:column; gap:3px; min-width:0!important; max-width:none; padding:4px; border:0; font-size:12px; }
+  .analysis-group-table td[data-label]::before { content:attr(data-label); font-size:10px; color:#64748b; }
+  .analysis-group-table .analysis-numeric,.analysis-group-table .analysis-share-cell { text-align:left; }.analysis-group-table .analysis-share-cell .analysis-bar-track { max-width:100px; }
+  .analysis-group-table .analysis-group-actions { grid-column:1/-1; display:flex; flex-direction:row; justify-content:flex-end; border-top:1px solid #edf2f7; padding-top:5px; }
+  .analysis-group-actions button { min-height:32px; }.analysis-table-total { border-radius:6px; border-top:1px solid #e2e8f0; font-size:10px; }
+  .analysis-navigation { padding:8px 12px; }.analysis-search { width:100%; }.analysis-search input { width:100%; }.analysis-footer { padding:8px 12px; font-size:10px; }
+}
+@media(prefers-reduced-motion:reduce) { .asset-analysis-dialog * { transition:none!important; animation:none!important; } }
+/* Dimension labels and their Excel-style filter dropdowns form one control. */
+.analysis-builder { position:relative; }
+.analysis-dimension-column { display:inline-flex; min-width:0; max-width:100%; }
+.analysis-dimension-options .analysis-dimension-name { border-radius:5px 0 0 5px; white-space:nowrap; }
+.analysis-dimension-options .analysis-dimension-dropdown { border-radius:0 5px 5px 0; border-left:0; padding:5px 7px; min-width:28px; justify-content:center; }
+.analysis-dimension-dropdown svg { flex-shrink:0; }
+.analysis-inline-filter { max-width:105px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; font-size:10px; }
+.analysis-dimension-column.has-filter .analysis-dimension-dropdown { background:#eff6ff; color:#2563eb; border-color:#93c5fd; }
+.analysis-active-note { display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:4px; margin-top:9px; font-size:10px; color:#64748b; }
+.analysis-active-note .analysis-text-button { font-size:10px; }
+.analysis-column-popover { position:absolute; z-index:5; width:330px; max-width:calc(100% - 16px); margin-top:0; box-shadow:0 8px 28px rgb(15 23 42 / .18); }
+.analysis-column-popover .analysis-filter-editor-top { gap:7px; padding:9px 10px; }
+.analysis-column-popover .analysis-filter-editor-top strong { font-size:12px; }
+.analysis-column-popover .analysis-filter-editor-top>span { font-size:10px; color:#64748b; }
+.analysis-column-popover .analysis-icon-button { margin-left:auto; }
+.analysis-column-popover .analysis-filter-search { margin:8px 10px 0; width:auto; }
+.analysis-column-popover .analysis-filter-search input { width:100%; font-size:12px; }
+.analysis-filter-selection { display:flex; align-items:center; gap:12px; padding:8px 12px 2px; font-size:11px; }
+.analysis-filter-selection button { color:#2563eb; padding:3px 0; }
+.analysis-filter-selection>span { margin-left:auto; color:#64748b; }
+.analysis-column-popover .analysis-filter-options { grid-template-columns:1fr; max-height:180px; padding:4px 10px 8px; }
+.analysis-column-popover .analysis-filter-options label { padding:7px 3px; }
+.analysis-column-popover .analysis-filter-editor-bottom { gap:6px; padding:8px 10px; }
+.analysis-column-popover .analysis-filter-editor-bottom>span { width:auto; margin-right:auto; font-size:10px; }
+@media(max-width:640px) { .analysis-column-popover .analysis-filter-options { max-height:160px; }.analysis-inline-filter { max-width:72px; } }
+.analysis-table-options { display:flex; flex-wrap:wrap; align-items:center; gap:14px; }
+.analysis-parent-total { display:block; margin-top:7px; color:#64748b; font-size:11px; font-weight:400; line-height:1.6; white-space:nowrap; }
+.analysis-parent-total strong { color:var(--analysis-accent); font-size:13px; font-weight:600; font-variant-numeric:tabular-nums; }
+.analysis-parent-children { display:block; margin-top:3px; color:#64748b; font-size:11px; font-weight:400; line-height:1.6; white-space:nowrap; }
+.analysis-parent-children strong { font-weight:600; color:#475569; font-variant-numeric:tabular-nums; }
+.analysis-merge-toggle { cursor:pointer; white-space:nowrap; }
+.analysis-merge-toggle input { accent-color:#2563eb; width:13px; height:13px; }
+.analysis-group-table.is-merged td { vertical-align:top; }
+.analysis-group-table.is-merged td[rowspan]:not([rowspan="1"]) { background:#f8fafc; border-right:1px solid var(--analysis-boundary); border-bottom:1px solid var(--analysis-boundary); font-weight:500; }
+@media(max-width:640px) {
+  .analysis-group-table.is-merged { overflow:auto; border:1px solid var(--analysis-boundary); border-radius:6px; }
+  .analysis-group-table.is-merged table { display:table; min-width:560px; }
+  .analysis-group-table.is-merged thead { display:table-header-group; }
+  .analysis-group-table.is-merged tbody { display:table-row-group; }
+  .analysis-group-table.is-merged tr { display:table-row; padding:0; border:0; }
+  .analysis-group-table.is-merged td { display:table-cell; padding:10px 12px; border-top:1px solid var(--analysis-line); min-width:80px!important; }
+  .analysis-group-table.is-merged td[data-label]::before { display:none; }
+  .analysis-group-table.is-merged .analysis-numeric,.analysis-group-table.is-merged .analysis-share-cell { text-align:right; }
+  .analysis-group-table.is-merged .analysis-group-actions { display:table-cell; min-width:170px!important; }
+}
+
+/* Keep a one-pixel grid; darker boundaries separate parent groups. */
+.analysis-group-table tbody tr:first-child > td,
+.analysis-group-table.is-merged .analysis-group-start > td { border-top-color:var(--analysis-boundary); }
diff --git a/src/modules/assets/components/analysis/dimension-picker.css b/src/modules/assets/components/analysis/dimension-picker.css
new file mode 100644
index 0000000..9561424
--- /dev/null
+++ b/src/modules/assets/components/analysis/dimension-picker.css
@@ -0,0 +1,34 @@
+.adp-row { display:flex; flex-wrap:wrap; align-items:flex-start; gap:6px; }
+.analysis-dimension-picker { display:inline-flex; flex-direction:column; align-items:stretch; min-width:0; max-width:190px; vertical-align:top; font-size:12px; }
+.analysis-dimension-picker .adp-split { display:flex; min-height:30px; border:1px solid #e2e8f0; border-radius:5px; background:#f8fafc; overflow:hidden; }
+.analysis-dimension-picker .adp-split button { display:inline-flex; align-items:center; justify-content:center; gap:4px; min-height:28px; padding:5px 8px; border:0; border-radius:0; background:transparent; color:#475569; font-size:12px; line-height:1.3; }
+.analysis-dimension-picker .adp-split .adp-arrow { border-left:1px solid #e2e8f0; padding:5px 6px; font-size:10px; }
+.analysis-dimension-picker.adp-grouped .adp-split { background:#eff6ff; border-color:#93c5fd; }
+.analysis-dimension-picker.adp-grouped .adp-name { color:#1d4ed8; }
+.analysis-dimension-picker.adp-filtered .adp-arrow { color:#1d4ed8; background:#dbeafe; }
+.analysis-dimension-picker .adp-split button:hover { background:#e2e8f0; }
+.analysis-dimension-picker .adp-order { display:inline-flex; align-items:center; justify-content:center; width:15px; height:15px; background:#2563eb; border-radius:3px; font-size:10px; color:white; }
+.analysis-dimension-picker .adp-selected { text-align:left; padding:3px 2px 0; border:0; background:none; color:#2563eb; font-size:10px; max-width:190px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
+.analysis-dimension-picker .adp-menu { position:fixed; z-index:1100; display:flex; flex-direction:column; width:min(320px,calc(100vw - 16px)); border:1px solid #cbd5e1; border-radius:7px; background:#fff; color:#334155; box-shadow:0 8px 30px rgb(15 23 42 / .17); overflow:hidden; font-size:12px; }
+.analysis-dimension-picker .adp-menu button { padding:5px 8px; border:0; border-radius:4px; background:transparent; color:#475569; font-size:11px; min-height:26px; line-height:1.4; }
+.analysis-dimension-picker .adp-menu button:hover { background:#f1f5f9; }
+.analysis-dimension-picker .adp-menu-heading { display:flex; align-items:center; justify-content:space-between; padding:7px 10px; border-bottom:1px solid #e2e8f0; flex-shrink:0; }
+.analysis-dimension-picker .adp-menu-heading strong { font-size:12px; font-weight:600; }
+.analysis-dimension-picker .adp-menu-heading button { padding:4px; min-height:22px; }
+.analysis-dimension-picker .adp-search { display:flex; align-items:center; gap:6px; margin:9px 10px 5px; padding:6px 8px; border:1px solid #e2e8f0; border-radius:5px; flex-shrink:0; color:#64748b; }
+.analysis-dimension-picker .adp-search input { width:100%; min-width:0; border:0; outline:none; background:white; color:#334155; font-size:12px; }
+.analysis-dimension-picker .adp-select-tools { display:flex; align-items:center; gap:2px; padding:0 6px 4px; flex-shrink:0; }
+.analysis-dimension-picker .adp-select-tools button { color:#2563eb; font-size:10px; padding:4px; }
+.analysis-dimension-picker .adp-select-tools>span { margin-left:auto; padding-right:4px; font-size:10px; color:#64748b; }
+.analysis-dimension-picker .adp-options { min-height:0; flex:1; overflow-y:auto; overscroll-behavior:contain; padding:0 8px 6px; }
+.analysis-dimension-picker .adp-options label { display:flex; align-items:center; gap:7px; min-height:30px; padding:6px 4px; border-radius:4px; cursor:pointer; font-size:12px; }
+.analysis-dimension-picker .adp-options label:hover { background:#f8fafc; }
+.analysis-dimension-picker .adp-options input { accent-color:#2563eb; flex-shrink:0; width:13px; height:13px; }
+.analysis-dimension-picker .adp-options label>span { overflow-wrap:anywhere; }
+.analysis-dimension-picker .adp-options small { margin-left:auto; padding-left:5px; color:#64748b; font-size:10px; font-variant-numeric:tabular-nums; }
+.analysis-dimension-picker .adp-options p { padding:16px; text-align:center; color:#64748b; font-size:11px; }
+.analysis-dimension-picker .adp-menu-footer { border-top:1px solid #e2e8f0; padding:8px 10px; flex-shrink:0; }
+.analysis-dimension-picker .adp-menu-footer>span { display:block; font-size:10px; color:#64748b; margin-bottom:7px; }
+.analysis-dimension-picker .adp-menu-footer>div { display:flex; justify-content:flex-end; gap:6px; }
+.analysis-dimension-picker .adp-menu-footer .adp-apply { background:#2563eb; color:white; }
+.analysis-dimension-picker .adp-menu-footer .adp-apply:hover { background:#1d4ed8; }
diff --git a/src/modules/assets/components/analysis/progressive-rows.css b/src/modules/assets/components/analysis/progressive-rows.css
new file mode 100644
index 0000000..86964e0
--- /dev/null
+++ b/src/modules/assets/components/analysis/progressive-rows.css
@@ -0,0 +1,5 @@
+.analysis-progressive-status { display:flex; align-items:center; justify-content:center; flex-wrap:wrap; gap:8px 14px; min-height:44px; padding:10px 12px; color:#64748b; font-size:11px; font-variant-numeric:tabular-nums; }
+.analysis-progressive-hint { color:#94a3b8; }
+.analysis-progressive-status button { padding:5px 10px; border:1px solid #e2e8f0; border-radius:5px; background:#fff; color:#2563eb; cursor:pointer; font:inherit; }
+.analysis-progressive-status button:hover { background:#eff6ff; }
+.analysis-progressive-status button:focus-visible { outline:2px solid #2563eb; outline-offset:2px; }
diff --git a/src/modules/assets/components/analysis/useProgressiveRows.ts b/src/modules/assets/components/analysis/useProgressiveRows.ts
new file mode 100644
index 0000000..6d88533
--- /dev/null
+++ b/src/modules/assets/components/analysis/useProgressiveRows.ts
@@ -0,0 +1,48 @@
+import { useCallback, useEffect, useMemo, useState, type RefObject } from 'react';
+
+interface ProgressiveRowsOptions {
+  total: number;
+  rootRef: RefObject<HTMLElement | null>;
+  resetKey: unknown;
+  enabled?: boolean;
+  batchSize?: number;
+}
+
+/** Render a cumulative prefix, loading another batch near the actual scroll body's bottom. */
+export function useProgressiveRows({ total, rootRef, resetKey, enabled = true, batchSize = 40 }: ProgressiveRowsOptions) {
+  const context = useMemo(() => ({ resetKey, enabled, batchSize }), [resetKey, enabled, batchSize]);
+  const [progress, setProgress] = useState(() => ({ context, limit: batchSize }));
+  const [sentinel, setSentinel] = useState<HTMLDivElement | null>(null);
+  const visibleCount = Math.min(total, progress.context === context ? progress.limit : batchSize);
+  const hasMore = visibleCount < total;
+  const loadMore = useCallback(() => {
+    if (!enabled) return;
+    setProgress(previous => ({ context, limit: Math.min(total, (previous.context === context ? previous.limit : batchSize) + batchSize) }));
+  }, [enabled, context, total, batchSize]);
+
+  useEffect(() => {
+    if (enabled && rootRef.current) rootRef.current.scrollTop = 0;
+  }, [context, enabled, rootRef]);
+
+  useEffect(() => {
+    const root = rootRef.current;
+    if (!enabled || !hasMore || !root || !sentinel || typeof IntersectionObserver === 'undefined') return;
+    let active = true;
+    let queued = false;
+    let frame: number | undefined;
+    const observer = new IntersectionObserver(entries => {
+      if (!active || queued || !entries.some(entry => entry.isIntersecting)) return;
+      queued = true;
+      // One append per observer: let layout settle before deciding whether more rows fit.
+      frame = requestAnimationFrame(loadMore);
+    }, { root, rootMargin: '0px 0px 240px 0px', threshold: 0 });
+    observer.observe(sentinel);
+    return () => {
+      active = false;
+      observer.disconnect();
+      if (frame !== undefined) cancelAnimationFrame(frame);
+    };
+  }, [enabled, hasMore, rootRef, sentinel, visibleCount, loadMore]);
+
+  return { visibleCount, total, hasMore, loadMore, sentinelRef: setSentinel };
+}
diff --git a/src/modules/assets/components/flow-analysis-modal.css b/src/modules/assets/components/flow-analysis-modal.css
new file mode 100644
index 0000000..e548e48
--- /dev/null
+++ b/src/modules/assets/components/flow-analysis-modal.css
@@ -0,0 +1,86 @@
+.bi-flow-modal-backdrop { position: fixed; inset: 0; z-index: 1000; display: flex; align-items: center; justify-content: center; padding: 16px; background: rgb(2 6 23 / 45%); backdrop-filter: blur(4px); }
+.bi-flow-modal-parent-total { display:block; margin-top:7px; color:#64748b; font-size:11px; font-weight:400; line-height:1.6; white-space:nowrap; }
+.bi-flow-modal-parent-total strong { color:#2563eb; font-size:13px; font-weight:600; font-variant-numeric:tabular-nums; }
+.bi-flow-modal-parent-children { display:block; margin-top:3px; color:#64748b; font-size:11px; font-weight:400; line-height:1.6; white-space:nowrap; }
+.bi-flow-modal-parent-children strong { font-weight:600; color:#475569; font-variant-numeric:tabular-nums; }
+.bi-flow-modal { --flow-line:#d5deea; --flow-boundary:#b8c6d8; display: flex; flex-direction: column; width: 100%; max-width: 960px; max-height: 88dvh; min-width: 0; overflow: hidden; background: white; border-radius: 12px; color: #334155; font-size: 12px; box-shadow: 0 24px 64px rgb(15 23 42 / 20%); }
+.bi-flow-modal button, .bi-flow-modal select { font: inherit; cursor: pointer; }
+.bi-flow-modal button:disabled { cursor: not-allowed; opacity: .4; }
+.bi-flow-modal button:focus-visible, .bi-flow-modal select:focus-visible { outline: 2px solid #60a5fa; outline-offset: 2px; }
+.bi-flow-modal-header { flex-shrink: 0; padding: 14px 18px; background: #1e293b; color: white; }
+.bi-flow-modal-header-row { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
+.bi-flow-modal-header h3 { margin: 0 0 5px; font-size: 14px; line-height: 1.5; font-weight: 700; }
+.bi-flow-modal-header p { margin: 0; font-size: 11px; color: #cbd5e1; }
+.bi-flow-modal-close { display: flex; align-items: center; justify-content: center; width: 30px; height: 30px; flex-shrink: 0; border: 0; border-radius: 50%; background: rgb(255 255 255 / 10%); color: white; }
+.bi-flow-modal-close:hover { background: rgb(255 255 255 / 20%); }
+.bi-flow-modal-header .bi-flow-modal-definition { margin-top: 8px; color: #94a3b8; font-size: 10px; }
+.bi-flow-modal-body { overflow-y: auto; overscroll-behavior: contain; min-height:0; flex:1; padding: 16px 18px; }
+.bi-flow-modal-controls { padding-bottom: 14px; border-bottom: 1px solid #e2e8f0; }
+.bi-flow-modal-control-row { display: flex; align-items: center; gap: 12px; }
+.bi-flow-modal-control-label { flex: 0 0 50px; color: #64748b; font-size: 11px; }
+.bi-flow-modal-chip { display: inline-flex; align-items: center; gap: 4px; min-height: 28px; padding: 4px 9px; border: 1px solid #e2e8f0; border-radius: 6px; background: white; color: #64748b; font-size: 12px; }
+.bi-flow-modal-chip:hover { border-color: #93c5fd; }
+.bi-flow-modal-chip-active { border-color: #bfdbfe; background: #eff6ff; color: #2563eb; }
+.bi-flow-modal-control-hint { margin: 7px 0 12px 62px; font-size: 10px; color: #94a3b8; line-height: 1.6; }
+.bi-flow-modal-clear { color: #64748b; background: none; border: 0; font-size: 10px !important; }
+.bi-flow-modal-detail-nav { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
+.bi-flow-modal-detail-nav > span { font-size: 11px; color: #64748b; overflow-wrap: anywhere; }
+.bi-flow-modal-back { display: inline-flex; align-items: center; gap: 5px; border: 0; background: #f1f5f9; color: #475569; padding: 6px 8px; border-radius: 6px; font-size: 11px !important; }
+.bi-flow-modal-back:hover { background: #e2e8f0; }
+.bi-flow-modal-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid #e2e8f0; border-radius: 8px; background: #f8fafc; margin: 14px 0 16px; }
+.bi-flow-modal-summary > div { padding: 12px 14px; display: flex; flex-direction: column; gap: 6px; min-width: 0; }
+.bi-flow-modal-summary > div + div { border-left: 1px solid #e2e8f0; }
+.bi-flow-modal-summary span { font-size: 11px; color: #64748b; }
+.bi-flow-modal-summary strong { color: #2563eb; font-size: 22px; font-weight: 700; line-height: 1.2; font-variant-numeric: tabular-nums; }
+.bi-flow-modal strong small { margin-left: 4px; font-size: 10px; font-weight: 400; color: #64748b; }
+.bi-flow-modal-purple { color: #7c3aed !important; }
+.bi-flow-modal-section-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 10px; }
+.bi-flow-modal-section-heading h4 { margin: 0; font-size: 12px; font-weight: 600; color: #0f172a; }
+.bi-flow-modal-section-heading p { margin: 4px 0 0; font-size: 10px; line-height: 1.6; color: #64748b; }
+.bi-flow-modal-export { display: inline-flex; gap: 5px; align-items: center; background: #eff6ff; border: 1px solid #dbeafe; color: #2563eb; border-radius: 6px; padding: 6px 8px; font-size: 11px !important; }
+.bi-flow-modal-export:hover { background: #dbeafe; }
+.bi-flow-modal-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid var(--flow-boundary); border-radius: 8px; }
+.bi-flow-modal-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 12px; }
+.bi-flow-modal-table th { padding: 10px 12px; background: #f8fafc; color: #64748b; font-weight: 500; white-space: nowrap; }
+.bi-flow-modal-table td { height: 40px; padding: 7px 12px; border-top: 1px solid var(--flow-line); line-height: 1.5; max-width: 200px; overflow-wrap: anywhere; }
+.bi-flow-modal-table tr:hover td { background: #f8fafc; }
+.bi-flow-modal-number { text-align: right; white-space: nowrap; width: 65px; }
+.bi-flow-modal-number strong { font-size: 14px; font-weight: 600; color: #0f172a; font-variant-numeric: tabular-nums; }
+.bi-flow-modal-share { width: 126px; white-space: nowrap; }
+.bi-flow-modal-share > div { display: flex; align-items: center; justify-content: flex-end; gap: 7px; font-size: 11px; font-variant-numeric: tabular-nums; }
+.bi-flow-modal-share > div > span:last-child { min-width: 42px; text-align: right; }
+.bi-flow-modal-track { display: block; width: 48px; flex-shrink: 0; height: 5px; background: #f1f5f9; overflow: hidden; border-radius: 3px; }
+.bi-flow-modal-fill { display: block; height: 100%; border-radius: 3px; }
+.bi-flow-modal-fill-delivered { background: #2563eb; }
+.bi-flow-modal-fill-returned { background: #ea580c; }
+.bi-flow-modal-fill-replaced { background: #7c3aed; }
+.bi-flow-modal-action { width: 78px; white-space: nowrap; text-align: right; }
+.bi-flow-modal-action button { padding: 3px 0; color: #2563eb; font-size: 11px; background: none; border: 0; }
+.bi-flow-modal-action button:hover { text-decoration: underline; }
+.bi-flow-modal-detail-table { min-width: 800px; }
+.bi-flow-modal-detail-table td { font-size: 12px; min-width: 80px; }
+.bi-flow-modal-detail-table td:nth-child(3), .bi-flow-modal-detail-table td:nth-child(4) { min-width: 133px; font-size: 11px; }
+.bi-flow-modal-empty { padding: 30px 12px; text-align: center; color: #94a3b8; font-size: 12px; background: #f8fafc; border-radius: 8px; }
+@media (max-width: 640px) {
+  .bi-flow-modal-backdrop { padding: 0; align-items: flex-end; }
+  .bi-flow-modal { border-radius: 12px 12px 0 0; max-height: 90dvh; }
+  .bi-flow-modal-header, .bi-flow-modal-body { padding: 12px; }
+  .bi-flow-modal-control-row { align-items: flex-start; gap: 8px; }
+  .bi-flow-modal-control-label { flex-basis: 44px; padding-top: 6px; font-size: 10px; }
+  .bi-flow-modal-control-hint { margin-left: 52px; }
+  .bi-flow-modal-summary > div { padding: 10px 8px; }
+  .bi-flow-modal-summary span { font-size: 10px; }
+  .bi-flow-modal-summary strong { font-size: 22px; }
+  .bi-flow-modal-table th, .bi-flow-modal-table td { padding-left: 9px; padding-right: 9px; }
+  .bi-flow-modal-table th:not(.bi-flow-modal-number):not(.bi-flow-modal-share):not(.bi-flow-modal-action) { min-width: 72px; }
+  .bi-flow-modal-share { width: 65px; }
+  .bi-flow-modal-track { display: none; }
+}
+
+.bi-flow-modal-merge-toggle { display:inline-flex; align-items:center; gap:6px; color:#64748b; font-size:11px; cursor:pointer; white-space:nowrap; }
+.bi-flow-modal-merge-toggle input { width:13px; height:13px; accent-color:#2563eb; }
+.bi-flow-modal-table td.bi-flow-modal-parent-cell { vertical-align:top; padding-top:11px; background:#f8fafc; border-right:1px solid var(--flow-boundary); border-bottom:1px solid var(--flow-boundary); font-weight:500; }
+
+/* Parent boundaries are stronger in color, never thicker. */
+.bi-flow-modal-table tbody tr:first-child > td,
+.bi-flow-modal-table .bi-flow-modal-group-start > td { border-top-color:var(--flow-boundary); }
diff --git a/src/modules/assets/components/overview/InventoryDesktopTable.tsx b/src/modules/assets/components/overview/InventoryDesktopTable.tsx
index fe8c3e3..2019289 100644
--- a/src/modules/assets/components/overview/InventoryDesktopTable.tsx
+++ b/src/modules/assets/components/overview/InventoryDesktopTable.tsx
@@ -1,100 +1,176 @@
-import { Fragment, type Dispatch, type SetStateAction } from 'react';
-import { ArrowUpRight, ChevronRight } from 'lucide-react';
 import { InventoryStatusCounts } from './InventoryStatusCounts';
-import { InventoryModelTags } from './InventoryModelTags';
-import { inventoryBrandGroups, inventoryRegionRows, inventorySelection, inventorySubtotalSelection, inventoryTotal, type InventoryDisplayGroup } from './inventory-presentation';
-import { inventoryTypeLabel, type InventoryFilters, type VehicleModalSelection } from '../../model';
+import { inventorySelection, type InventoryDisplayGroup } from './inventory-presentation';
+import type { InventoryFilters } from '../../model';
 import type { RegionalInventoryStats } from '../../types';
+import { inventorySubtotalSelection } from './inventory-presentation';
+import React from 'react';
+import { ChevronDown, ChevronRight } from 'lucide-react';
+import { AnimatePresence, motion } from 'motion/react';
+import type { InventoryStatisticsSectionProps } from './types';
 
-export interface InventoryListProps {
-  groups: InventoryDisplayGroup[];
-  tab: 'region' | 'model';
-  expanded: Set<string>;
-  toggle: (name: string) => void;
-  total: number;
-  filters: InventoryFilters;
-  select: Dispatch<SetStateAction<VehicleModalSelection | null>>;
+type InventoryDesktopTableProps = Pick<
+  InventoryStatisticsSectionProps,
+  | 'inventoryTab'
+  | 'inventoryByRegion'
+  | 'expandedInventoryRegions'
+  | 'toggleInventoryRegion'
+  | 'inventoryByModel'
+  | 'expandedInventoryTypes'
+  | 'toggleInventoryType'
+  | 'setVehicleSelection'
+>;
+
+export function InventoryDesktopTable({
+  inventoryTab,
+  inventoryByRegion,
+  expandedInventoryRegions,
+  toggleInventoryRegion,
+  inventoryByModel,
+  expandedInventoryTypes,
+  toggleInventoryType,
+  setVehicleSelection: setShowPlateNumbers,
+}: InventoryDesktopTableProps) {
+  return (
+    <div className="hidden lg:block overflow-x-auto">
+      <table className="w-full text-left border-collapse">
+        <thead>
+          <tr className="bg-slate-50 text-[11px] text-slate-500 uppercase tracking-wider border-b border-slate-100">
+            <th className="p-3 font-semibold w-64">{inventoryTab === 'region' ? '区域 / 城市' : '车型分类 / 型号'}</th>
+            <th className="p-3 font-semibold">{inventoryTab === 'region' ? '品牌' : '品牌'}</th>
+            <th className="p-3 font-semibold">{inventoryTab === 'region' ? '车型' : '所在区域/城市'}</th>
+            <th className="p-3 font-semibold text-center w-32">库存数量</th>
+          </tr>
+        </thead>
+        <tbody className="text-xs">
+          {inventoryTab === 'region' ? (
+            Object.entries(inventoryByRegion).map(([region, cities]) => (
+              <React.Fragment key={region}>
+                <tr
+                  className="bg-slate-50/30 border-b border-slate-100 cursor-pointer hover:bg-slate-50 transition-colors"
+                  onClick={() => toggleInventoryRegion(region)}
+                >
+                  <td colSpan={4} className="p-3 font-bold text-slate-700">
+                    <div className="flex flex-wrap items-center gap-2">
+                      {expandedInventoryRegions.has(region) ? <ChevronDown size={14} className="text-slate-400" /> : <ChevronRight size={14} className="text-slate-400" />}
+                      <span>{region}</span>
+                      <span className="text-[10px] font-normal text-slate-400 ml-2 cursor-pointer hover:text-blue-500 transition-colors"
+                            onClick={(e) => {
+                              e.stopPropagation();
+                              setShowPlateNumbers(inventorySubtotalSelection(Object.values(cities).flat(), `库存统计 - ${region}`));
+                            }}>
+                        (共 {Object.values(cities).flat().reduce((acc, s) => acc + s.quantity, 0)} 台)
+                      </span>
+                      <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={Object.values(cities).flat()} />
+                    </div>
+                  </td>
+                </tr>
+                <AnimatePresence>
+                  {expandedInventoryRegions.has(region) && Object.entries(cities).map(([city, stats]) => (
+                    <React.Fragment key={city}>
+                      {stats.map((stat, idx) => (
+                        <motion.tr
+                          key={`${city}-${stat.model}-${idx}`}
+                          initial={{ opacity: 0 }}
+                          animate={{ opacity: 1 }}
+                          className="border-b border-slate-50 hover:bg-slate-50/20 transition-colors"
+                        >
+                          <td className="p-3 pl-8 text-slate-500 border-r border-slate-50">
+                            {idx === 0 ? <span className="font-medium text-slate-600">{city}</span> : ''}
+                          </td>
+                          <td className="p-3 text-slate-600 border-r border-slate-50">{stat.brand}</td>
+                          <td className="p-3 text-slate-600 border-r border-slate-50">{stat.model}</td>
+                          <td className="p-3 text-center font-bold text-blue-600">
+                            <button
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                setShowPlateNumbers(inventorySubtotalSelection([stat], `库存统计 - ${stat.model} - ${stat.city}`));
+                              }}
+                              className="text-blue-600 hover:underline font-bold"
+                            >
+                              {stat.quantity}
+                            </button>
+                            {((stat.pending ?? 0) > 0 || (stat.abnormal ?? 0) > 0) && (
+                              <div className="mt-1"><InventoryStatusCounts onSelect={setShowPlateNumbers} rows={[stat]} /></div>
+                            )}
+                          </td>
+                        </motion.tr>
+                      ))}
+                    </React.Fragment>
+                  ))}
+                </AnimatePresence>
+              </React.Fragment>
+            ))
+          ) : (
+            Object.entries(inventoryByModel).map(([type, models]) => (
+              <React.Fragment key={type}>
+                <tr
+                  className="bg-slate-50/30 border-b border-slate-100 cursor-pointer hover:bg-slate-50 transition-colors"
+                  onClick={() => toggleInventoryType(type)}
+                >
+                  <td colSpan={4} className="p-3 font-bold text-slate-700">
+                    <div className="flex flex-wrap items-center gap-2">
+                      {expandedInventoryTypes.has(type) ? <ChevronDown size={14} className="text-slate-400" /> : <ChevronRight size={14} className="text-slate-400" />}
+                      <span>{type}</span>
+                      <span className="text-[10px] font-normal text-slate-400 ml-2 cursor-pointer hover:text-blue-500 transition-colors"
+                            onClick={(e) => {
+                              e.stopPropagation();
+                              setShowPlateNumbers(inventorySubtotalSelection(Object.values(models).flat(), `库存统计 - ${type}`));
+                            }}>
+                        (共 {Object.values(models).flat().reduce((acc, s) => acc + s.quantity, 0)} 台)
+                      </span>
+                      <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={Object.values(models).flat()} />
+                    </div>
+                  </td>
+                </tr>
+                <AnimatePresence>
+                  {expandedInventoryTypes.has(type) && Object.entries(models).map(([model, stats]) => (
+                    <React.Fragment key={model}>
+                      {stats.map((stat, idx) => (
+                        <motion.tr
+                          key={`${model}-${stat.region}-${stat.city}-${idx}`}
+                          initial={{ opacity: 0 }}
+                          animate={{ opacity: 1 }}
+                          className="border-b border-slate-50 hover:bg-slate-50/20 transition-colors"
+                        >
+                          <td className="p-3 pl-8 text-slate-500 border-r border-slate-50">
+                            {idx === 0 ? <span className="font-medium text-slate-600">{model}</span> : ''}
+                          </td>
+                          <td className="p-3 text-slate-600 border-r border-slate-50">{stat.brand}</td>
+                          <td className="p-3 text-slate-600 border-r border-slate-50">{stat.region} / {stat.city}</td>
+                          <td className="p-3 text-center font-bold text-blue-600">
+                            <button
+                              onClick={(e) => {
+                                e.stopPropagation();
+                                setShowPlateNumbers(inventorySubtotalSelection([stat], `库存统计 - ${stat.model} - ${stat.city}`));
+                              }}
+                              className="text-blue-600 hover:underline font-bold"
+                            >
+                              {stat.quantity}
+                            </button>
+                            {((stat.pending ?? 0) > 0 || (stat.abnormal ?? 0) > 0) && (
+                              <div className="mt-1"><InventoryStatusCounts onSelect={setShowPlateNumbers} rows={[stat]} /></div>
+                            )}
+                          </td>
+                        </motion.tr>
+                      ))}
+                    </React.Fragment>
+                  ))}
+                </AnimatePresence>
+              </React.Fragment>
+            ))
+          )}
+        </tbody>
+      </table>
+    </div>
+  );
 }
 
-export function InventoryQuantity({ quantity, label, onClick }: { quantity: number; label: string; onClick: () => void }) {
-  return <button className="inventory-quantity" disabled={!quantity} onClick={onClick} aria-label={`${label}，库存 ${quantity} 台，查看车辆明细`}>
-    {quantity.toLocaleString()}<ArrowUpRight size={14} aria-hidden="true" />
-  </button>;
-}
-
-export function selectInventoryRow(row: RegionalInventoryStats, select: InventoryListProps['select']) {
+export function selectInventoryRow(row: RegionalInventoryStats, select: InventoryStatisticsSectionProps['setVehicleSelection']) {
   select(inventorySelection(row, `库存统计 · ${row.city} · ${row.model}`, { vehicleType: row.type }));
 }
 
-export function selectInventoryGroup(group: InventoryDisplayGroup, { tab, filters, select }: Pick<InventoryListProps, 'tab' | 'filters' | 'select'>) {
+export function selectInventoryGroup(group: InventoryDisplayGroup, { tab, filters, select }: { tab: 'region' | 'model'; filters: InventoryFilters; select: InventoryStatisticsSectionProps['setVehicleSelection'] }) {
   select(inventorySelection(tab === 'model' ? { ...filters, type: group.name } : filters, `库存统计 · ${group.name}`, tab === 'region'
     ? { location: filters.city || group.name }
     : {}));
 }
-
-export function InventoryShare({ quantity, total }: { quantity: number; total: number }) {
-  const percent = total ? quantity / total * 100 : 0;
-  return <div className="inventory-share"><span className="inventory-share-track" aria-hidden="true"><span style={{ width: `${percent}%` }} /></span><span>{percent.toFixed(1)}%</span></div>;
-}
-
-function InventorySubtotal({ rows, label, select }: { rows: RegionalInventoryStats[]; label: string; select: InventoryListProps['select'] }) {
-  return <div className={`inventory-subtotal${rows.length === 1 ? ' inventory-subtotal-inline' : ''}`} aria-label={`${label}合计 ${inventoryTotal(rows)} 台`}>
-    <button className="inventory-subtotal-button" disabled={!inventoryTotal(rows)} aria-label={`${label}合计 ${inventoryTotal(rows)} 台，查看车辆明细`} onClick={() => select(inventorySubtotalSelection(rows, label))}>合计 <strong>{inventoryTotal(rows).toLocaleString()}</strong> 台<ArrowUpRight size={12} aria-hidden="true" /></button>
-    <InventoryStatusCounts rows={rows} />
-  </div>;
-}
-
-function InventoryDetailRows({ rows, city, tab, total, select }: Pick<InventoryListProps, 'tab' | 'total' | 'select'> & { rows: RegionalInventoryStats[]; city?: string }) {
-  const brands = inventoryBrandGroups(rows, tab === 'region' ? 'type' : 'model');
-  return brands.map((brand, brandIndex) => brand.variants.map((variants, variantIndex) =>
-    (tab === 'model' ? inventoryRegionRows(variants) : variants.map(row => ({ row, regionSpan: 0 }))).map(({ row, regionSpan }, index) =>
-    <tr className="inventory-detail-row" key={`${brandIndex}-${variantIndex}-${index}`}>
-      {tab === 'region' && brandIndex === 0 && variantIndex === 0 && index === 0 && <th rowSpan={rows.length} scope="rowgroup" className="inventory-merged-cell inventory-city-cell">{city || '未分配'}<InventorySubtotal select={select} rows={rows} label={city || '未分配'} /></th>}
-      {variantIndex === 0 && index === 0 && <td rowSpan={brand.rows.length} className="inventory-merged-cell">{brand.brand || '—'}<InventorySubtotal select={select} rows={brand.rows} label={brand.brand || '未分配品牌'} /></td>}
-      {index === 0 && <td rowSpan={variants.length} className="inventory-merged-cell">
-        {tab === 'region' ? <span className="inventory-tag inventory-tag-type">{inventoryTypeLabel(row.type) || '未分类'}</span> : <InventoryModelTags row={row} hideType />}
-        <InventorySubtotal select={select} rows={variants} label={tab === 'region' ? inventoryTypeLabel(row.type) : row.model} />
-      </td>}
-      {tab === 'model' && regionSpan > 0 && <td rowSpan={regionSpan} className="inventory-merged-cell inventory-region-cell">{row.region || '未分配'}<InventorySubtotal select={select} rows={variants.filter(item => item.region === row.region)} label={row.region || '未分配'} /></td>}
-      <td>{tab === 'region' ? <InventoryModelTags row={row} hideType /> : row.city || '未分配'}</td>
-      <td className="inventory-number-column"><InventoryQuantity quantity={row.quantity} label={`${row.city} · ${row.brand} · ${row.model}`} onClick={() => selectInventoryRow(row, select)} /><InventoryStatusCounts rows={[row]} /></td>
-      <td><InventoryShare quantity={row.quantity} total={total} /></td>
-    </tr>
-  )));
-}
-
-export function InventoryDesktopTable(props: InventoryListProps) {
-  const { groups, tab, expanded, toggle, total, select } = props;
-  return <div className="inventory-desktop">
-    <table className="inventory-table" data-group-by={tab}>
-      <caption className="sr-only">按{tab === 'region' ? '区域' : '车型'}分组的库存统计，占比基于当前筛选库存总数</caption>
-      <thead><tr>
-        {tab === 'region' && <th scope="col">区域 / 城市</th>}
-        <th scope="col">品牌</th>
-        {tab === 'region' && <th scope="col">车型</th>}
-        <th scope="col">类别</th>
-        {tab === 'model' && <><th scope="col">区域</th><th scope="col">城市</th></>}
-        <th scope="col" className="inventory-number-column">库存数量</th>
-        <th scope="col" className="inventory-share-column">库存占比</th>
-      </tr></thead>
-      {groups.map(group => <Fragment key={group.name}><tbody>
-        <tr className="inventory-group-row" data-expanded={expanded.has(group.name)}>
-          <th scope="row" colSpan={4}>
-            <div className="inventory-group-heading">
-              <button className="inventory-expand" aria-expanded={expanded.has(group.name)} onClick={() => toggle(group.name)}>
-                <ChevronRight size={16} aria-hidden="true" /><strong>{group.name || '未分配'}</strong><span>{group.sections.length} 个{tab === 'region' ? '城市' : '型号'}</span>
-              </button>
-              <InventoryStatusCounts rows={group.rows} />
-            </div>
-          </th>
-          <td className="inventory-number-column"><InventoryQuantity quantity={group.quantity} label={group.name} onClick={() => selectInventoryGroup(group, props)} /></td>
-          <td><InventoryShare quantity={group.quantity} total={total} /></td>
-        </tr>
-        </tbody>
-        {expanded.has(group.name) && (tab === 'region' ? group.sections : [[group.name, group.rows] as const]).map(([name, rows]) => <tbody key={name} className="inventory-detail-group">
-          <InventoryDetailRows rows={rows} city={name} tab={tab} total={total} select={select} />
-        </tbody>)}
-      </Fragment>)}
-    </table>
-  </div>;
-}
diff --git a/src/modules/assets/components/overview/InventoryMobileList.tsx b/src/modules/assets/components/overview/InventoryMobileList.tsx
index cbcd14d..5fdfcee 100644
--- a/src/modules/assets/components/overview/InventoryMobileList.tsx
+++ b/src/modules/assets/components/overview/InventoryMobileList.tsx
@@ -1,77 +1,131 @@
-import { Fragment, useId, useRef, useState } from 'react';
-import { ChevronLeft, ChevronRight, MapPin, Truck } from 'lucide-react';
 import { InventoryStatusCounts } from './InventoryStatusCounts';
-import { inventoryMobileDrilldown, inventoryMobileGroups, inventoryPage, inventorySubtotalSelection, inventoryTotal, type InventoryDisplayGroup } from './inventory-presentation';
-import { InventoryQuantity, InventoryShare, selectInventoryGroup, type InventoryListProps } from './InventoryDesktopTable';
+import { inventorySubtotalSelection } from './inventory-presentation';
+import { ChevronDown, ChevronRight } from 'lucide-react';
+import type { InventoryStatisticsSectionProps } from './types';
 
-function MobileGroupDetails({ group, tab, select }: Pick<InventoryListProps, 'tab' | 'select'> & { group: InventoryDisplayGroup }) {
-  const [path, setPath] = useState<string[]>([]);
-  const [requestedPage, setPage] = useState(0);
-  const heading = useRef<HTMLHeadingElement>(null);
-  const view = inventoryMobileDrilldown(group.rows, tab, path);
-  const labels = { region: '区域', city: '城市', type: '车型', variant: '品牌 / 型号' };
-  const { page, pageCount, start, rows: pageGroups } = inventoryPage(view.groups, requestedPage);
-  const activePath = view.parents.map(parent => parent.key);
-  const navigate = (nextPath: string[]) => {
-    setPath(nextPath);
-    setPage(0);
-    heading.current?.focus({ preventScroll: true });
-  };
-  const openVehicles = (rows: typeof group.rows, label: string) => select(inventorySubtotalSelection(rows, label));
+type InventoryMobileListProps = Pick<
+  InventoryStatisticsSectionProps,
+  | 'inventoryTab'
+  | 'inventoryByRegion'
+  | 'expandedInventoryRegions'
+  | 'toggleInventoryRegion'
+  | 'inventoryByModel'
+  | 'expandedInventoryTypes'
+  | 'toggleInventoryType'
+  | 'setVehicleSelection'
+>;
 
-  return <div className="inventory-mobile-details">
-    {view.parents.length > 0 && <nav className="inventory-mobile-breadcrumb" aria-label="库存下钻路径">
-      <button onClick={() => navigate([])}>{group.name || '未分配'}</button>
-      {view.parents.map((parent, index) => <Fragment key={parent.key}>
-        <ChevronRight size={12} aria-hidden="true" />
-        {index === view.parents.length - 1 ? <span aria-current="location">{parent.label}</span> :
-          <button onClick={() => navigate(activePath.slice(0, index + 1))}>{parent.label}</button>}
-      </Fragment>)}
-    </nav>}
-    <div className="inventory-mobile-detail-toolbar">
-      <h3 ref={heading} tabIndex={-1}>{labels[view.dimension]}库存 <span>· {view.groups.length} 项</span></h3>
-      {view.parents.length > 0 && <button className="inventory-text-button" onClick={() => navigate(activePath.slice(0, -1))}><ChevronLeft size={14} aria-hidden="true" />返回上一级</button>}
+export function InventoryMobileList({
+  inventoryTab,
+  inventoryByRegion,
+  expandedInventoryRegions,
+  toggleInventoryRegion,
+  inventoryByModel,
+  expandedInventoryTypes,
+  toggleInventoryType,
+  setVehicleSelection: setShowPlateNumbers,
+}: InventoryMobileListProps) {
+  return (
+    <div className="lg:hidden p-3 space-y-3">
+      {inventoryTab === 'region' ? (
+        Object.entries(inventoryByRegion).map(([region, cities]) => (
+          <div key={region} className="border border-slate-100 rounded overflow-hidden">
+            <div
+              className="bg-slate-50 p-3 flex justify-between items-center cursor-pointer"
+              onClick={() => toggleInventoryRegion(region)}
+            >
+              <div className="flex items-center gap-2">
+                {expandedInventoryRegions.has(region) ? <ChevronDown size={14} className="text-slate-400" /> : <ChevronRight size={14} className="text-slate-400" />}
+                <span className="text-xs font-bold text-slate-700">{region}</span>
+              </div>
+              <div className="flex flex-col items-end gap-1 text-right">
+                <span className="text-[10px] font-bold text-blue-600">
+                  {Object.values(cities).flat().reduce((acc, s) => acc + s.quantity, 0)} 台
+                </span>
+                <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={Object.values(cities).flat()} />
+              </div>
+            </div>
+
+            {expandedInventoryRegions.has(region) && (
+              <div className="p-2 space-y-2 bg-white">
+                {Object.entries(cities).map(([city, stats]) => (
+                  <div key={city} className="border-l-2 border-slate-200 pl-3 py-1">
+                    <div className="text-[10px] font-bold text-slate-500 mb-2">{city}</div>
+                    <div className="space-y-2">
+                      {stats.map((stat, idx) => (
+                        <div key={idx} className="flex justify-between items-center text-[11px] bg-slate-50/50 p-2 rounded">
+                          <div className="flex flex-col">
+                            <span className="text-slate-400 text-[9px]">{stat.brand}</span>
+                            <span className="text-slate-700 font-medium">{stat.model}</span>
+                          </div>
+                          <div className="flex flex-col items-end gap-1 text-right">
+                          <button
+                            onClick={() => setShowPlateNumbers(inventorySubtotalSelection([stat], `库存统计 - ${stat.model} - ${stat.city}`))}
+                            className="font-bold text-blue-600 hover:underline"
+                          >
+                            {stat.quantity} 台
+                          </button>
+                          <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={[stat]} />
+                          </div>
+                        </div>
+                      ))}
+                    </div>
+                  </div>
+                ))}
+              </div>
+            )}
+          </div>
+        ))
+      ) : (
+        Object.entries(inventoryByModel).map(([type, models]) => (
+          <div key={type} className="border border-slate-100 rounded overflow-hidden">
+            <div
+              className="bg-slate-50 p-3 flex justify-between items-center cursor-pointer"
+              onClick={() => toggleInventoryType(type)}
+            >
+              <div className="flex items-center gap-2">
+                {expandedInventoryTypes.has(type) ? <ChevronDown size={14} className="text-slate-400" /> : <ChevronRight size={14} className="text-slate-400" />}
+                <span className="text-xs font-bold text-slate-700">{type}</span>
+              </div>
+              <div className="flex flex-col items-end gap-1 text-right">
+                <span className="text-[10px] font-bold text-blue-600">
+                  {Object.values(models).flat().reduce((acc, s) => acc + s.quantity, 0)} 台
+                </span>
+                <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={Object.values(models).flat()} />
+              </div>
+            </div>
+
+            {expandedInventoryTypes.has(type) && (
+              <div className="p-2 space-y-2 bg-white">
+                {Object.entries(models).map(([model, stats]) => (
+                  <div key={model} className="border-l-2 border-slate-200 pl-3 py-1">
+                    <div className="text-[10px] font-bold text-slate-500 mb-2">{model}</div>
+                    <div className="space-y-2">
+                      {stats.map((stat, idx) => (
+                        <div key={idx} className="flex justify-between items-center text-[11px] bg-slate-50/50 p-2 rounded">
+                          <div className="flex flex-col">
+                            <span className="text-slate-400 text-[9px]">{stat.brand}</span>
+                            <span className="text-slate-700 font-medium">{stat.region} / {stat.city}</span>
+                          </div>
+                          <div className="flex flex-col items-end gap-1 text-right">
+                          <button
+                            onClick={() => setShowPlateNumbers(inventorySubtotalSelection([stat], `库存统计 - ${stat.model} - ${stat.city}`))}
+                            className="font-bold text-blue-600 hover:underline"
+                          >
+                            {stat.quantity} 台
+                          </button>
+                          <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={[stat]} />
+                          </div>
+                        </div>
+                      ))}
+                    </div>
+                  </div>
+                ))}
+              </div>
+            )}
+          </div>
+        ))
+      )}
     </div>
-    <div className="inventory-mobile-list-heading"><span>{labels[view.dimension]}</span><span>库存（台）</span></div>
-    <ul className="inventory-mobile-records" aria-label={`${labels[view.dimension]}库存列表`}>
-      {pageGroups.map(item => <li key={item.key} className="inventory-mobile-drill-row">
-        <button className="inventory-mobile-drill-label"
-          aria-label={view.dimension === 'variant' ? `${item.label}，查看车辆明细` : `查看${item.label}的${view.dimension === 'region' ? '城市' : view.dimension === 'city' && tab === 'region' ? '车型' : '品牌型号'}库存`}
-          onClick={() => view.dimension === 'variant' ? openVehicles(item.rows, item.label) : navigate([...activePath, item.key])}>
-          <span>{item.label}</span>
-          {view.dimension !== 'variant' && <ChevronRight size={14} aria-hidden="true" />}
-        </button>
-        <InventoryQuantity quantity={item.quantity} label={item.label} onClick={() => openVehicles(item.rows, item.label)} />
-        {item.rows.some(row => row.abnormal || row.pending) && <div className="inventory-mobile-status"><InventoryStatusCounts rows={item.rows} /></div>}
-      </li>)}
-    </ul>
-    <div className="inventory-mobile-scope-total" role="status"><span>当前范围合计</span><strong>{inventoryTotal(view.rows).toLocaleString()} 台</strong></div>
-    {pageCount > 1 && <nav className="inventory-mobile-pagination" aria-label={`${group.name}明细分页`}>
-      <button disabled={page === 0} onClick={() => setPage(page - 1)}><ChevronLeft size={16} aria-hidden="true" />上一页</button>
-      <span aria-live="polite">{start + 1}–{start + pageGroups.length} / {view.groups.length}</span>
-      <button disabled={page === pageCount - 1} onClick={() => setPage(page + 1)}>下一页<ChevronRight size={16} aria-hidden="true" /></button>
-    </nav>}
-  </div>;
-}
-
-export function InventoryMobileList(props: InventoryListProps) {
-  const { groups, tab, total } = props;
-  const [activeGroup, setActiveGroup] = useState<string | null>(null);
-  const id = useId();
-  return <div className="inventory-mobile">
-    <p className="inventory-mobile-hint">点击名称逐层查看，点击数量查看车辆</p>
-    {groups.map((group, index) => <article key={group.name} className="inventory-mobile-group" data-expanded={activeGroup === group.name}>
-      <div className="inventory-mobile-group-heading">
-        <button className="inventory-expand" aria-expanded={activeGroup === group.name} aria-controls={`${id}-${index}`} onClick={() => setActiveGroup(activeGroup === group.name ? null : group.name)}>
-          <span className="inventory-mobile-group-icon">{tab === 'region' ? <MapPin size={16} aria-hidden="true" /> : <Truck size={16} aria-hidden="true" />}</span><strong>{group.name || '未分配'}</strong><span>{inventoryMobileGroups(group.rows, tab === 'region' ? 'city' : 'region').length} 个{tab === 'region' ? '城市' : '区域'}</span><ChevronRight size={14} aria-hidden="true" />
-        </button>
-        <InventoryQuantity quantity={group.quantity} label={group.name} onClick={() => selectInventoryGroup(group, props)} />
-      </div>
-      <div className="inventory-mobile-group-meta"><span>库存占比</span><InventoryShare quantity={group.quantity} total={total} /></div>
-      {(group.rows.some(row => row.abnormal || row.pending)) && <div className="inventory-mobile-status"><InventoryStatusCounts rows={group.rows} /></div>}
-      <div id={`${id}-${index}`} hidden={activeGroup !== group.name}>
-        {activeGroup === group.name && <MobileGroupDetails group={group} tab={tab} select={props.select} />}
-      </div>
-    </article>)}
-  </div>;
+  );
 }
diff --git a/src/modules/assets/components/overview/InventoryStatisticsSection.tsx b/src/modules/assets/components/overview/InventoryStatisticsSection.tsx
index c899edf..fd669cc 100644
--- a/src/modules/assets/components/overview/InventoryStatisticsSection.tsx
+++ b/src/modules/assets/components/overview/InventoryStatisticsSection.tsx
@@ -1,121 +1,213 @@
-import { useId, useRef, useState } from 'react';
-import { ArrowUpRight, Boxes, ChevronDown, ChevronsDownUp, ChevronsUpDown, Filter, MapPin, SearchX, Truck, X } from 'lucide-react';
+import { useAuth } from '../../../../auth/useAuth';
+import { InventoryStatusCounts } from './InventoryStatusCounts';
+import { inventorySubtotalSelection } from './inventory-presentation';
+import { Filter } from 'lucide-react';
+import { AnimatePresence, motion } from 'motion/react';
 import { InventoryDesktopTable } from './InventoryDesktopTable';
 import { InventoryMobileList } from './InventoryMobileList';
-import { inventoryGroups, inventorySelection, inventoryTotal } from './inventory-presentation';
-import type { InventoryFilters } from '../../model';
 import type { InventoryStatisticsSectionProps } from './types';
-import './inventory-statistics.css';
 
-const emptyFilters: InventoryFilters = { region: '', city: '', brand: '', type: '', model: '' };
-const filterLabels: Record<keyof InventoryFilters, string> = { region: '区域', city: '城市', brand: '品牌', type: '车型', model: '型号 / 批次' };
-
-export function InventoryStatisticsSection(props: InventoryStatisticsSectionProps) {
-  const {
-    inventoryFilters: filters, setInventoryFilters: setFilters,
-    draftInventoryFilters: draft, setDraftInventoryFilters: setDraft,
-    isInventoryFilterOpen: filterOpen, setIsInventoryFilterOpen: setFilterOpen,
-    filteredInventoryStats: rows, inventoryTab: tab, setInventoryTab: setTab,
-    setVehicleSelection: select,
-  } = props;
-  const id = useId();
-  const filterTrigger = useRef<HTMLButtonElement>(null);
-  const [sort, setSort] = useState<'default' | 'quantity'>('default');
-  const total = inventoryTotal(rows);
-  const abnormal = rows.reduce((sum, row) => sum + (row.abnormal || 0), 0);
-  const pending = rows.reduce((sum, row) => sum + (row.pending || 0), 0);
-  const activeFilters = (Object.keys(filters) as (keyof InventoryFilters)[]).filter(key => filters[key]);
-  const groups = inventoryGroups(tab === 'region' ? props.inventoryByRegion : props.inventoryByModel, sort, tab);
-  const expanded = tab === 'region' ? props.expandedInventoryRegions : props.expandedInventoryTypes;
-  const toggle = tab === 'region' ? props.toggleInventoryRegion : props.toggleInventoryType;
-  const allExpanded = groups.length > 0 && groups.every(group => expanded.has(group.name));
-  const closeFilters = () => { setFilterOpen(false); filterTrigger.current?.focus(); };
-  const resetFilters = () => { setFilters({ ...emptyFilters }); setDraft({ ...emptyFilters }); };
-  const options = {
-    region: props.uniqueInventoryRegions, city: props.uniqueInventoryCities,
-    brand: props.uniqueInventoryBrands, type: props.uniqueInventoryTypes,
-    model: props.uniqueInventoryModelsForType,
+export function InventoryStatisticsSection({
+  inventoryFilters,
+  setInventoryFilters,
+  draftInventoryFilters,
+  setDraftInventoryFilters,
+  isInventoryFilterOpen,
+  setIsInventoryFilterOpen,
+  uniqueInventoryRegions,
+  uniqueInventoryCities,
+  uniqueInventoryBrands,
+  uniqueInventoryTypes,
+  uniqueInventoryModelsForType,
+  filteredInventoryStats,
+  inventoryTab,
+  setInventoryTab,
+  inventoryByRegion,
+  expandedInventoryRegions,
+  toggleInventoryRegion,
+  inventoryByModel,
+  expandedInventoryTypes,
+  toggleInventoryType,
+  setVehicleSelection: setShowPlateNumbers,
+}: InventoryStatisticsSectionProps) {
+  const { preview } = useAuth();
+  const listProps = {
+    inventoryTab,
+    inventoryByRegion,
+    expandedInventoryRegions,
+    toggleInventoryRegion,
+    inventoryByModel,
+    expandedInventoryTypes,
+    toggleInventoryType,
+    setVehicleSelection: setShowPlateNumbers,
   };
-  const listProps = { groups, tab, expanded, toggle, total, filters, select };
 
   return (
-    <section data-testid="inventory-statistics" className="inventory-statistics" aria-labelledby={`${id}-heading`}>
-      <header className="inventory-heading">
-        <div className="inventory-title">
-          <span className="inventory-title-icon"><Boxes size={20} aria-hidden="true" /></span>
-          <div><h2 id={`${id}-heading`}>库存统计</h2><p>按区域、车型核对库存分布</p></div>
+    <div className="bg-white rounded-2xl border border-gray-100 shadow-sm mb-6 overflow-hidden min-h-[420px]">
+      <div className="p-3 sm:p-4 border-b border-gray-50 bg-white flex items-center justify-between relative">
+        <div className="flex items-center gap-3">
+          <div className="w-1.5 h-6 bg-blue-600 rounded-full"></div>
+          <div className="flex flex-col">
+            <h2 className="text-lg font-bold text-gray-800 leading-tight">库存统计</h2>
+            <span className="text-[10px] text-gray-400 font-medium">{preview ? '公共库存汇总 · 明细按当前用户权限查看' : '实时更新库存数据'}</span>
+          </div>
         </div>
-        <button ref={filterTrigger} className="inventory-control" aria-expanded={filterOpen} aria-controls={`${id}-filters`}
-          onClick={() => { if (!filterOpen) setDraft({ ...filters }); setFilterOpen(!filterOpen); }}>
-          <Filter size={16} aria-hidden="true" /> 筛选{activeFilters.length > 0 && <span className="inventory-filter-count">{activeFilters.length}</span>}
-          <ChevronDown size={14} aria-hidden="true" />
-        </button>
-      </header>
 
-      <div className="inventory-metrics" data-testid="inventory-status-summary">
-        <button className="inventory-metric inventory-metric-primary" disabled={!total}
-          onClick={() => select(inventorySelection(filters, activeFilters.length ? '库存统计 · 筛选结果' : '库存统计 · 全部库存'))}>
-          <span>{activeFilters.length ? '筛选后库存' : '库存总数'}<ArrowUpRight size={16} aria-hidden="true" /></span>
-          <strong>{total.toLocaleString()}<small>台</small></strong>
-        </button>
-        <button className="inventory-metric inventory-metric-pending" disabled={!pending}
-          onClick={() => select(inventorySelection(filters, '库存统计 · 待交车', { category: 'Pending' }))}>
-          <span>其中待交车<ArrowUpRight size={16} aria-hidden="true" /></span>
-          <strong>{pending.toLocaleString()}<small>台</small></strong>
-        </button>
-        <button className="inventory-metric inventory-metric-warning" disabled={!abnormal}
-          onClick={() => select(inventorySelection(filters, '库存统计 · 异动', { category: 'Abnormal' }))}>
-          <span>其中异动<ArrowUpRight size={16} aria-hidden="true" /></span>
-          <strong>{abnormal.toLocaleString()}<small>台</small></strong>
-        </button>
+        <div className="flex items-center gap-6 ml-auto pr-2">
+          <div className="flex flex-col items-end cursor-pointer hover:opacity-80 transition-opacity"
+               onClick={() => setShowPlateNumbers(inventorySubtotalSelection(filteredInventoryStats, '库存总数'))}>
+            <span className="text-[10px] text-gray-400 font-bold tracking-wider uppercase mb-0.5">总库存数据</span>
+            <span className="text-2xl font-black text-gray-900 leading-none">
+              {filteredInventoryStats.reduce((acc, s) => acc + s.quantity, 0)}
+              <span className="text-xs font-bold text-gray-400 ml-1">台</span>
+            </span>
+          </div>
+
+          <div className="relative">
+            <button
+              onClick={() => { if (!isInventoryFilterOpen) setDraftInventoryFilters({...inventoryFilters}); setIsInventoryFilterOpen(!isInventoryFilterOpen); }}
+              className={`flex items-center gap-1.5 px-3 py-1.5 rounded-lg text-xs font-bold transition-all ${
+                isInventoryFilterOpen || (inventoryFilters.region || inventoryFilters.city || inventoryFilters.brand || inventoryFilters.type || inventoryFilters.model)
+                  ? 'bg-blue-600 text-white shadow-md'
+                  : 'bg-gray-100 text-gray-600 hover:bg-gray-200'
+              }`}
+            >
+              <Filter size={14} />
+              <span>筛选</span>
+              {(inventoryFilters.region || inventoryFilters.city || inventoryFilters.brand || inventoryFilters.type || inventoryFilters.model) && (
+                <span className="w-2 h-2 bg-white rounded-full animate-pulse"></span>
+              )}
+            </button>
+
+            <AnimatePresence>
+              {isInventoryFilterOpen && (
+                <>
+                  <motion.div
+                    initial={{ opacity: 0, y: 10, scale: 0.95 }}
+                    animate={{ opacity: 1, y: 0, scale: 1 }}
+                    exit={{ opacity: 0, y: 10, scale: 0.95 }}
+                    className="fixed inset-x-4 top-20 max-h-[80vh] overflow-auto sm:inset-auto sm:top-20 sm:right-4 sm:w-72 bg-white rounded-xl shadow-2xl border border-slate-100 z-50 p-4"
+                  >
+                    <div className="flex justify-between items-center mb-4">
+                      <h3 className="text-xs font-bold text-slate-800">库存统计 - 数据筛选</h3>
+                      <button onClick={() => setDraftInventoryFilters({ region: '', city: '', brand: '', type: '', model: '' })} className="text-[10px] text-blue-500 hover:underline">重置所有</button>
+                    </div>
+
+                    <div className="space-y-3 text-left">
+                      <div>
+                        <label className="text-[10px] text-slate-400 block mb-1">区域</label>
+                        <select value={draftInventoryFilters.region} onChange={(e) => setDraftInventoryFilters({...draftInventoryFilters, region: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                          <option value="">全部区域</option>
+                          {uniqueInventoryRegions.map(r => <option key={r} value={r}>{r}</option>)}
+                        </select>
+                      </div>
+                      <div>
+                        <label className="text-[10px] text-slate-400 block mb-1">城市</label>
+                        <select value={draftInventoryFilters.city} onChange={(e) => setDraftInventoryFilters({...draftInventoryFilters, city: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                          <option value="">全部城市</option>
+                          {uniqueInventoryCities.map(c => <option key={c} value={c}>{c}</option>)}
+                        </select>
+                      </div>
+                      <div>
+                        <label className="text-[10px] text-slate-400 block mb-1">品牌</label>
+                        <select value={draftInventoryFilters.brand} onChange={(e) => setDraftInventoryFilters({...draftInventoryFilters, brand: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                          <option value="">全部品牌</option>
+                          {uniqueInventoryBrands.map(b => <option key={b} value={b}>{b}</option>)}
+                        </select>
+                      </div>
+                      <div>
+                        <label className="text-[10px] text-slate-400 block mb-1">车型</label>
+                        <select value={draftInventoryFilters.type} onChange={(e) => setDraftInventoryFilters({...draftInventoryFilters, type: e.target.value, model: ''})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                          <option value="">全部车型</option>
+                          {uniqueInventoryTypes.map(t => <option key={t} value={t}>{t}</option>)}
+                        </select>
+                      </div>
+                      <div>
+                        <label className="text-[10px] text-slate-400 block mb-1">批次</label>
+                        <select value={draftInventoryFilters.model} onChange={(e) => setDraftInventoryFilters({...draftInventoryFilters, model: e.target.value})} className="w-full text-xs bg-white border border-slate-200 rounded-lg px-2 py-1.5 focus:outline-none focus:ring-2 focus:ring-blue-500/20 focus:border-blue-500 transition-all shadow-sm cursor-pointer">
+                          <option value="">全部批次</option>
+                          {uniqueInventoryModelsForType.map(m => <option key={m} value={m}>{m}</option>)}
+                        </select>
+                      </div>
+                    </div>
+                    <button onClick={() => { setInventoryFilters({...draftInventoryFilters}); setIsInventoryFilterOpen(false); }} className="w-full mt-4 py-2 bg-blue-600 text-white rounded-lg text-xs font-bold hover:bg-blue-700 transition-colors">确认</button>
+                  </motion.div>
+                </>
+              )}
+            </AnimatePresence>
+          </div>
+        </div>
       </div>
-      <div className="inventory-summary-note"><span>{new Set(rows.map(row => row.region)).size} 个区域 · {new Set(rows.map(row => row.city)).size} 个城市</span><span>待交车、异动已包含在库存总数中</span></div>
 
-      {filterOpen && <form id={`${id}-filters`} className="inventory-filters" aria-label="库存筛选"
-        onKeyDown={event => { if (event.key === 'Escape') { event.preventDefault(); closeFilters(); } }}
-        onSubmit={event => { event.preventDefault(); setFilters({ ...draft }); closeFilters(); }}>
-        <div className="inventory-filter-heading"><strong>筛选库存</strong><button type="button" className="inventory-icon-button" aria-label="关闭库存筛选" onClick={closeFilters}><X size={18} aria-hidden="true" /></button></div>
-        <div className="inventory-filter-fields">
-          {(Object.keys(filterLabels) as (keyof InventoryFilters)[]).map(key => <label key={key}>
-            {filterLabels[key]}
-            <select value={draft[key]} onChange={event => setDraft({ ...draft, [key]: event.target.value, ...(key === 'type' ? { model: '' } : {}), ...(key === 'region' ? { city: '' } : {}) })}>
-              <option value="">全部{filterLabels[key]}</option>
-              {options[key].filter(Boolean).map(value => <option key={value} value={value}>{value}</option>)}
-            </select>
-          </label>)}
+      {filteredInventoryStats.some(row => (row.pending ?? 0) > 0 || (row.abnormal ?? 0) > 0) && (
+        <div className="border-b border-gray-100 px-4 py-2" data-testid="inventory-status-summary">
+          <InventoryStatusCounts onSelect={setShowPlateNumbers} rows={filteredInventoryStats} />
         </div>
-        <div className="inventory-filter-actions">
-          <button type="button" className="inventory-text-button" onClick={() => setDraft({ ...emptyFilters })}>重置条件</button>
-          <button type="button" className="inventory-control" onClick={closeFilters}>取消</button>
-          <button type="submit" className="inventory-control inventory-control-primary">应用筛选</button>
-        </div>
-      </form>}
+      )}
 
-      {activeFilters.length > 0 && <div className="inventory-active-filters" aria-label="已应用的库存筛选">
-        <span>已筛选</span>
-        {activeFilters.map(key => <button key={key} onClick={() => setFilters({ ...filters, [key]: '', ...(key === 'type' ? { model: '' } : {}), ...(key === 'region' ? { city: '' } : {}) })}
-          aria-label={`移除${filterLabels[key]}筛选：${filters[key]}`}>
-          {filterLabels[key]}：{filters[key]}<X size={13} aria-hidden="true" />
-        </button>)}
-        <button className="inventory-clear" onClick={resetFilters}>清除全部</button>
-      </div>}
-
-      <div className="inventory-toolbar">
-        <div className="inventory-view-switch" role="group" aria-label="库存分组方式">
-          <button aria-pressed={tab === 'region'} onClick={() => setTab('region')}><MapPin size={15} aria-hidden="true" />按区域</button>
-          <button aria-pressed={tab === 'model'} onClick={() => setTab('model')}><Truck size={15} aria-hidden="true" />按车型</button>
-        </div>
-        <div className="inventory-toolbar-actions">
-          <label className="inventory-sort"><span className="sr-only">库存分组排序</span><select value={sort} onChange={event => setSort(event.target.value as typeof sort)}><option value="default">默认排序</option><option value="quantity">库存从多到少</option></select></label>
-          <button className="inventory-text-button inventory-expand-all" disabled={!groups.length} onClick={() => groups.forEach(group => { if (expanded.has(group.name) === allExpanded) toggle(group.name); })}>
-            {allExpanded ? <ChevronsDownUp size={16} aria-hidden="true" /> : <ChevronsUpDown size={16} aria-hidden="true" />}{allExpanded ? '收起全部' : '展开全部'}
+      <div className="px-4 py-3 bg-gray-50/50 border-b border-gray-100">
+        <div className="flex bg-gray-200/50 p-1 rounded-lg w-fit shadow-inner">
+          <button
+            onClick={() => setInventoryTab('region')}
+            className={`px-6 py-1.5 rounded-md text-xs font-bold transition-all ${
+              inventoryTab === 'region' ? 'bg-white text-blue-600 shadow-sm' : 'text-gray-500 hover:text-gray-700'
+            }`}
+          >
+            按区域
+          </button>
+          <button
+            onClick={() => setInventoryTab('model')}
+            className={`px-6 py-1.5 rounded-md text-xs font-bold transition-all ${
+              inventoryTab === 'model' ? 'bg-white text-blue-600 shadow-sm' : 'text-gray-500 hover:text-gray-700'
+            }`}
+          >
+            按车型
           </button>
         </div>
       </div>
 
-      {groups.length ? <><InventoryDesktopTable {...listProps} /><InventoryMobileList key={JSON.stringify([tab, filters])} {...listProps} /></> :
-        <div className="inventory-empty"><SearchX size={32} aria-hidden="true" /><h3>{activeFilters.length ? '没有符合条件的库存' : '暂无库存数据'}</h3><p>{activeFilters.length ? '试试减少筛选条件，或清除筛选查看全部库存。' : '当前所属公司范围内暂无库存记录。'}</p>{activeFilters.length > 0 && <button className="inventory-control" onClick={resetFilters}>清除筛选</button>}</div>}
-      <footer className="inventory-footer"><span role="status" aria-live="polite">共 {groups.length} 个{tab === 'region' ? '区域' : '车型'} · {rows.length} 条记录 · {total.toLocaleString()} 台库存</span><span>占比基于当前筛选结果 · 单位：台</span></footer>
-    </section>
+      {/* Active Filters Bar */}
+      {(inventoryFilters.region || inventoryFilters.city || inventoryFilters.brand || inventoryFilters.type || inventoryFilters.model) && (
+        <div className="px-4 py-2 border-b border-gray-100 flex flex-wrap gap-2 items-center">
+          {inventoryFilters.region && (
+            <span className="px-2 py-0.5 bg-blue-50 text-blue-700 rounded text-[10px] flex items-center gap-1">
+              区域: {inventoryFilters.region}
+              <button onClick={() => setInventoryFilters({...inventoryFilters, region: ''})} className="hover:text-red-500 ml-0.5">×</button>
+            </span>
+          )}
+          {inventoryFilters.city && (
+            <span className="px-2 py-0.5 bg-blue-50 text-blue-700 rounded text-[10px] flex items-center gap-1">
+              城市: {inventoryFilters.city}
+              <button onClick={() => setInventoryFilters({...inventoryFilters, city: ''})} className="hover:text-red-500 ml-0.5">×</button>
+            </span>
+          )}
+          {inventoryFilters.brand && (
+            <span className="px-2 py-0.5 bg-blue-50 text-blue-700 rounded text-[10px] flex items-center gap-1">
+              品牌: {inventoryFilters.brand}
+              <button onClick={() => setInventoryFilters({...inventoryFilters, brand: ''})} className="hover:text-red-500 ml-0.5">×</button>
+            </span>
+          )}
+          {inventoryFilters.type && (
+            <span className="px-2 py-0.5 bg-blue-50 text-blue-700 rounded text-[10px] flex items-center gap-1">
+              车型: {inventoryFilters.type}
+              <button onClick={() => setInventoryFilters({...inventoryFilters, type: '', model: ''})} className="hover:text-red-500 ml-0.5">×</button>
+            </span>
+          )}
+          {inventoryFilters.model && (
+            <span className="px-2 py-0.5 bg-blue-50 text-blue-700 rounded text-[10px] flex items-center gap-1">
+              批次: {inventoryFilters.model}
+              <button onClick={() => setInventoryFilters({...inventoryFilters, model: ''})} className="hover:text-red-500 ml-0.5">×</button>
+            </span>
+          )}
+          <button onClick={() => setInventoryFilters({ region: '', city: '', brand: '', type: '', model: '' })} className="text-[11px] text-red-500 font-bold ml-auto hover:text-red-600">清除</button>
+        </div>
+      )}
+
+      {/* Desktop View Table */}
+      <InventoryDesktopTable {...listProps} />
+
+      {/* Mobile View */}
+      <InventoryMobileList {...listProps} />
+    </div>
   );
 }
diff --git a/src/modules/assets/components/overview/InventoryStatusCounts.tsx b/src/modules/assets/components/overview/InventoryStatusCounts.tsx
index 3715988..0af87c3 100644
--- a/src/modules/assets/components/overview/InventoryStatusCounts.tsx
+++ b/src/modules/assets/components/overview/InventoryStatusCounts.tsx
@@ -1,12 +1,17 @@
 import type { RegionalInventoryStats } from '../../types';
+import type { VehicleModalSelection } from '../../model';
+import { inventorySubtotalSelection } from './inventory-presentation';
 
 /** Status counts are subsets of these filtered inventory rows, never extra stock. */
-export function InventoryStatusCounts({ rows }: { rows: RegionalInventoryStats[] }) {
+export function InventoryStatusCounts({ rows, onSelect }: { rows: RegionalInventoryStats[]; onSelect: (selection: VehicleModalSelection) => void }) {
   const abnormal = rows.reduce((sum, row) => sum + (row.abnormal ?? 0), 0);
   const pending = rows.reduce((sum, row) => sum + (row.pending ?? 0), 0);
   if (abnormal === 0 && pending === 0) return null;
   return <span className="inline-flex flex-wrap gap-x-3 gap-y-1 text-[11px] font-normal" data-testid="inventory-status-counts">
-    {abnormal > 0 && <span className="inventory-status-abnormal text-amber-700">其中异动 <strong>{abnormal}</strong> 台</span>}
-    {pending > 0 && <span className="inventory-status-pending text-blue-700">其中待交车 <strong>{pending}</strong> 台</span>}
+    {abnormal > 0 && <button type="button" className="inventory-status-abnormal text-amber-700 hover:underline focus-visible:outline-2 focus-visible:outline-amber-500 rounded-sm" title="分析当前范围内的异动车辆" onClick={event => {
+      event.stopPropagation();
+      onSelect(inventorySubtotalSelection(rows, rows.length === 1 ? rows[0].model : '异动', 'Abnormal'));
+    }}>异动 <strong>{abnormal}</strong> 台</button>}
+    {pending > 0 && <span className="inventory-status-pending text-blue-700">待交车 <strong>{pending}</strong> 台</span>}
   </span>;
 }
diff --git a/src/modules/assets/components/overview/SummaryMetrics.tsx b/src/modules/assets/components/overview/SummaryMetrics.tsx
index e87a2ea..00a925e 100644
--- a/src/modules/assets/components/overview/SummaryMetrics.tsx
+++ b/src/modules/assets/components/overview/SummaryMetrics.tsx
@@ -52,11 +52,11 @@ export function SummaryMetrics({
             <div className="mt-2 flex flex-wrap items-center gap-x-3 gap-y-1 text-[11px]">
               <button type="button" data-testid="asset-abnormal-card" className="inline-flex items-center gap-1 text-amber-600 hover:underline"
                 onClick={(event) => { event.stopPropagation(); setShowPlateNumbers({ batch: 'All', model: 'All', location: 'All', category: 'Abnormal', source: 'asset', title: '库存中的异动车辆' }); }}>
-                <TriangleAlert size={12} />其中异动 <strong>{SUMMARY.inventory.abnormal}</strong>
+                <TriangleAlert size={12} />异动 <strong>{SUMMARY.inventory.abnormal}</strong>
               </button>
               <button type="button" className="inline-flex items-center gap-1 text-blue-600 hover:underline"
                 onClick={(event) => { event.stopPropagation(); setShowPlateNumbers({ batch: 'All', model: 'All', location: 'All', category: 'Pending', source: 'asset', title: '库存中的待交车' }); }}>
-                <PlusCircle size={12} />其中待交车 <strong>{SUMMARY.pendingDelivery}</strong>
+                <PlusCircle size={12} />待交车 <strong>{SUMMARY.pendingDelivery}</strong>
               </button>
 
             </div>
diff --git a/src/modules/assets/components/overview/inventory-presentation.test.ts b/src/modules/assets/components/overview/inventory-presentation.test.ts
index 22ff92a..97053d1 100644
--- a/src/modules/assets/components/overview/inventory-presentation.test.ts
+++ b/src/modules/assets/components/overview/inventory-presentation.test.ts
@@ -12,6 +12,19 @@ import { fetchVehicleList } from '../../api';
 
 const filters = { region: '华东', city: '上海', brand: '品牌甲', type: '18T', model: '批次一' };
 
+test('abnormal inventory drill preserves exact row keys and intersects the abnormal category and company', () => {
+  const rows = [{ ...filters, batch: '', quantity: 10, abnormal: 1 }];
+  const selection = inventorySubtotalSelection(rows, rows[0].model, 'Abnormal');
+  const request = buildVehicleModalRequest(selection, '公司甲');
+  assert.equal(request.kind, 'vehicles');
+  if (request.kind !== 'vehicles') throw new Error('wrong endpoint');
+  assert.deepEqual(request.params.inventoryKeys, rows.map(inventoryKey));
+  assert.equal(request.params.category, 'Abnormal');
+  assert.equal(request.params.subject, '公司甲');
+  assert.match(selection.scopeLabel!, /异动 1 台$/);
+  assert.ok(selection.scopeLabel!.includes('批次一'));
+});
+
 test('mobile region navigation shows only cities then types, preserving totals and exact leaf scope', () => {
   const rows = [
     { ...filters, batch: '', quantity: 9 },
@@ -115,10 +128,10 @@ test('mobile pages cover every record once and clamp after a filter reduces the
 
 test('inventory status hints show nonzero subset counts and hide zeros', () => {
   const row = { ...filters, batch: '', quantity: 9, pending: 2, abnormal: 1 };
-  const html = renderToStaticMarkup(createElement(InventoryStatusCounts, { rows: [row] }));
-  assert.match(html, /其中待交车 <strong>2<\/strong> 台/);
-  assert.match(html, /其中异动 <strong>1<\/strong> 台/);
-  assert.equal(renderToStaticMarkup(createElement(InventoryStatusCounts, { rows: [{ ...row, pending: 0, abnormal: 0 }] })), '');
+  const html = renderToStaticMarkup(createElement(InventoryStatusCounts, { onSelect: () => {}, rows: [row] }));
+  assert.match(html, /待交车 <strong>2<\/strong> 台/);
+  assert.match(html, /异动 <strong>1<\/strong> 台/);
+  assert.equal(renderToStaticMarkup(createElement(InventoryStatusCounts, { onSelect: () => {}, rows: [{ ...row, pending: 0, abnormal: 0 }] })), '');
 });
 
 test('filtered inventory totals retain all filters in the vehicle request', () => {
diff --git a/src/modules/assets/components/overview/inventory-presentation.ts b/src/modules/assets/components/overview/inventory-presentation.ts
index df52d8a..bd72c70 100644
--- a/src/modules/assets/components/overview/inventory-presentation.ts
+++ b/src/modules/assets/components/overview/inventory-presentation.ts
@@ -53,13 +53,15 @@ export function inventorySelection(filters: InventoryFilters, title: string, ove
   };
 }
 
-export function inventorySubtotalSelection(rows: RegionalInventoryStats[], label: string): VehicleModalSelection {
+export function inventorySubtotalSelection(rows: RegionalInventoryStats[], label: string, category: 'Inventory' | 'Abnormal' = 'Inventory'): VehicleModalSelection {
   const common = (key: 'region' | 'city' | 'brand' | 'type') => rows.length && rows.every(row => row[key] === rows[0][key]) ? rows[0][key] : '';
   const scope = [...new Set([common('region'), common('city'), common('brand'), common('type'), label].filter(Boolean))].join(' · ');
   return {
-    batch: 'All', model: 'All', location: 'All', source: 'asset', category: 'Inventory',
+    batch: 'All', model: 'All', location: 'All', source: 'asset', category,
     inventoryKeys: [...new Set(rows.map(inventoryKey))],
-    title: `库存统计 · ${scope}`, scopeLabel: `${scope} · 合计 ${inventoryTotal(rows)} 台`,
+    title: `库存统计 · ${scope}`, scopeLabel: category === 'Abnormal'
+      ? `${scope} · 异动 ${rows.reduce((sum, row) => sum + (row.abnormal ?? 0), 0)} 台`
+      : `${scope} · 合计 ${inventoryTotal(rows)} 台`,
   };
 }
 
diff --git a/src/modules/assets/dimension-layout.test.ts b/src/modules/assets/dimension-layout.test.ts
new file mode 100644
index 0000000..e38c129
--- /dev/null
+++ b/src/modules/assets/dimension-layout.test.ts
@@ -0,0 +1,94 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { dimensionChildCounts, dimensionCountUnit, dimensionParentTotals, dimensionRowSpans, orderDimensionGroups, visibleDimensionRowSpans } from './dimension-layout';
+
+type Row = { values: string[]; count: number };
+const values = (row: Row) => row.values;
+const count = (row: Row) => row.count;
+
+test('child counts deduplicate immediate children rather than counting leaf rows or vehicles', () => {
+  const rows: Row[] = [
+    { values: ['负责人甲', '客户一', '18T'], count: 29 },
+    { values: ['负责人甲', '客户一', '49T'], count: 17 },
+    { values: ['负责人甲', '客户二', '18T'], count: 80 },
+    { values: ['负责人乙', '客户一', '18T'], count: 9 },
+  ];
+  const counts = dimensionChildCounts(rows, 3, values);
+  assert.deepEqual(counts, [[2, 2], [2, 2], [2, 1], [1, 1]]);
+  assert.deepEqual(counts.slice(2, 3), [[2, 1]], 'continuation pages keep the full child count');
+  assert.deepEqual(dimensionChildCounts(rows.filter(row => row.values[1] === '客户一'), 3, values), [[1, 2], [1, 2], [1, 1]]);
+  assert.deepEqual(dimensionChildCounts(rows, 1, values), [[], [], [], []]);
+  assert.deepEqual(['customer', 'city', 'type', 'manager', 'date'].map(dimensionCountUnit), ['家', '个', '种', '位', '天']);
+});
+
+test('parent subtotals include all descendants and separate identical child labels under different parents', () => {
+  const rows: Row[] = [
+    { values: ['负责人甲', '客户一', '18T'], count: 29 },
+    { values: ['负责人甲', '客户一', '49T'], count: 17 },
+    { values: ['负责人甲', '客户二', '18T'], count: 80 },
+    { values: ['负责人乙', '客户一', '18T'], count: 9 },
+  ];
+  const totals = dimensionParentTotals(rows, 3, values, count);
+  assert.deepEqual(totals, [[126, 46], [126, 46], [126, 80], [9, 9]]);
+  // A continuation page still displays 126, not the 80 vehicles on that page.
+  assert.deepEqual(totals.slice(2, 3), [[126, 80]]);
+  assert.deepEqual(dimensionParentTotals(rows.filter(row => row.values[1] === '客户一'), 3, values, count), [[46, 46], [46, 46], [9, 9]]);
+  assert.deepEqual(dimensionParentTotals(rows, 1, values, count), [[], [], [], []]);
+  assert.deepEqual(dimensionParentTotals([], 3, values, count), []);
+});
+
+test('merged layout ranks parent totals and keeps their children contiguous without changing leaf counts', () => {
+  const rows: Row[] = [
+    { values: ['华东', '租赁'], count: 6 },
+    { values: ['华南', '租赁'], count: 10 },
+    { values: ['华东', '在库'], count: 5 },
+  ];
+  const ordered = orderDimensionGroups(rows, 2, values, count);
+  assert.deepEqual(ordered.map(values), [['华东', '租赁'], ['华东', '在库'], ['华南', '租赁']]);
+  assert.equal(ordered.reduce((sum, row) => sum + row.count, 0), 21);
+  assert.deepEqual(dimensionRowSpans(ordered, 2, values), [[2, 1], [0, 1], [1, 1]]);
+  assert.deepEqual(orderDimensionGroups(rows, 2, values, count, 'count-asc').map(count), [10, 5, 6]);
+  assert.deepEqual(rows.map(count), [6, 10, 5]);
+});
+
+test('equal child names under different parents never merge, and the final dimension stays visible', () => {
+  const rows = [
+    ['华东', '未标注', '18T'], ['华东', '未标注', '49T'],
+    ['华南', '未标注', '18T'], ['华南', '未标注', '49T'],
+  ].map(values => ({ values, count: 1 }));
+  assert.deepEqual(dimensionRowSpans(rows, 3, values), [[2, 2, 1], [0, 0, 1], [2, 2, 1], [0, 0, 1]]);
+});
+
+test('a parent split across pages is rendered again at the start of each page', () => {
+  const rows = ['A', 'B', 'C', 'D'].map(type => ({ values: ['华东', type], count: 1 }));
+  assert.deepEqual(dimensionRowSpans(rows.slice(0, 3), 2, values), [[3, 1], [0, 1], [0, 1]]);
+  assert.deepEqual(dimensionRowSpans(rows.slice(3), 2, values), [[1, 1]]);
+  assert.deepEqual(dimensionRowSpans(rows, 1, values), [[1], [1], [1], [1]]);
+  assert.deepEqual(dimensionRowSpans([], 3, values), []);
+});
+
+test('continuous loading grows the original parent spans across batches without repeating parent cells', () => {
+  const rows = [
+    ['华东', '嘉兴', 'A'], ['华东', '嘉兴', 'B'], ['华东', '嘉兴', 'C'],
+    ['华东', '杭州', 'D'], ['华南', '广州', 'E'],
+  ].map(parts => ({ values: parts, count: 2 }));
+  const complete = dimensionRowSpans(rows, 3, values);
+  assert.deepEqual(visibleDimensionRowSpans(complete, 2), [[2, 2, 1], [0, 0, 1]]);
+  assert.deepEqual(visibleDimensionRowSpans(complete, 4), [[4, 3, 1], [0, 0, 1], [0, 0, 1], [0, 1, 1]]);
+  assert.deepEqual(visibleDimensionRowSpans(complete, 40), complete);
+  assert.deepEqual(visibleDimensionRowSpans(complete, 0), []);
+  assert.deepEqual(complete, [[4, 3, 1], [0, 0, 1], [0, 0, 1], [0, 1, 1], [1, 1, 1]]);
+  assert.equal(dimensionParentTotals(rows, 3, values, count)[0][0], 8);
+  assert.equal(dimensionChildCounts(rows, 3, values)[0][0], 2);
+});
+
+test('hierarchical label order supports semantic ordering and separator-containing values', () => {
+  const rows = [
+    { values: ['A|B', '30+'], count: 2 }, { values: ['A', 'B|30+'], count: 1 },
+    { values: ['A|B', '3-7'], count: 1 },
+  ];
+  const semantic = ['3-7', '30+'];
+  const result = orderDimensionGroups(rows, 2, values, count, 'label', (a, b, index) => index === 0
+    ? a.values[0].localeCompare(b.values[0]) : semantic.indexOf(a.values[1]) - semantic.indexOf(b.values[1]));
+  assert.deepEqual(result.map(values), [['A', 'B|30+'], ['A|B', '3-7'], ['A|B', '30+']]);
+});
diff --git a/src/modules/assets/dimension-layout.ts b/src/modules/assets/dimension-layout.ts
new file mode 100644
index 0000000..ec6801d
--- /dev/null
+++ b/src/modules/assets/dimension-layout.ts
@@ -0,0 +1,97 @@
+type GroupSort = 'count-desc' | 'count-asc' | 'label';
+
+export function dimensionCountUnit(dimension: string): string {
+  if (dimension === 'customer') return '家';
+  if (dimension === 'manager') return '位';
+  if (dimension === 'date') return '天';
+  if (['type', 'model', 'assetStatus', 'assetDisposition', 'operationKind', 'inventoryState', 'abnormalType', 'contract_type'].includes(dimension)) return '种';
+  if (dimension === 'abnormalAge') return '组';
+  return '个';
+}
+
+/** Distinct immediate children within each full parent prefix, across all filtered results. */
+export function dimensionChildCounts<T>(rows: readonly T[], dimensionCount: number, values: (row: T) => readonly string[]): number[][] {
+  const children = new Map<string, Set<string>>();
+  const keys = rows.map(row => {
+    const parts = values(row);
+    return Array.from({ length: Math.max(0, dimensionCount - 1) }, (_, depth) => {
+      const key = JSON.stringify(parts.slice(0, depth + 1));
+      const set = children.get(key) ?? new Set<string>();
+      set.add(parts[depth + 1]);
+      children.set(key, set);
+      return key;
+    });
+  });
+  return keys.map(row => row.map(key => children.get(key)!.size));
+}
+
+/** Use all filtered groups before rendering a prefix so each parent includes every descendant. */
+export function dimensionParentTotals<T>(
+  rows: readonly T[],
+  dimensionCount: number,
+  values: (row: T) => readonly string[],
+  count: (row: T) => number,
+): number[][] {
+  const keys = rows.map(row => Array.from({ length: Math.max(0, dimensionCount - 1) }, (_, depth) => JSON.stringify(values(row).slice(0, depth + 1))));
+  const totals = new Map<string, number>();
+  rows.forEach((row, index) => {
+    for (const key of keys[index]) totals.set(key, (totals.get(key) || 0) + count(row));
+  });
+  return keys.map(row => row.map(key => totals.get(key) || 0));
+}
+
+/** Sort siblings by their combined count, keeping every parent subtree contiguous. */
+export function orderDimensionGroups<T>(
+  rows: readonly T[],
+  dimensionCount: number,
+  values: (row: T) => readonly string[],
+  count: (row: T) => number,
+  sort: GroupSort = 'count-desc',
+  compareAt?: (a: T, b: T, index: number) => number,
+): T[] {
+  const visit = (siblings: readonly T[], depth: number): T[] => {
+    if (depth >= dimensionCount || siblings.length < 2) return [...siblings];
+    const groups = new Map<string, { rows: T[]; count: number }>();
+    for (const row of siblings) {
+      const key = values(row)[depth];
+      const group = groups.get(key) ?? { rows: [], count: 0 };
+      group.rows.push(row);
+      group.count += count(row);
+      groups.set(key, group);
+    }
+    return [...groups.values()].sort((a, b) => {
+      const difference = sort === 'count-desc' ? b.count - a.count : sort === 'count-asc' ? a.count - b.count : 0;
+      return difference || (compareAt
+        ? compareAt(a.rows[0], b.rows[0], depth)
+        : values(a.rows[0])[depth].localeCompare(values(b.rows[0])[depth], 'zh-CN', { numeric: true }));
+    }).flatMap(group => visit(group.rows, depth + 1));
+  };
+  return visit(rows, 0);
+}
+
+/** A child is merged only within its full parent prefix. */
+export function dimensionRowSpans<T>(
+  rows: readonly T[],
+  dimensionCount: number,
+  values: (row: T) => readonly string[],
+): number[][] {
+  const keys = rows.map(values);
+  const spans = rows.map(() => Array<number>(dimensionCount).fill(1));
+  for (let dimension = 0; dimension < dimensionCount - 1; dimension += 1) {
+    let start = 0;
+    while (start < rows.length) {
+      let end = start + 1;
+      while (end < rows.length && keys[start].slice(0, dimension + 1).every((value, index) => value === keys[end][index])) end += 1;
+      spans[start][dimension] = end - start;
+      for (let row = start + 1; row < end; row += 1) spans[row][dimension] = 0;
+      start = end;
+    }
+  }
+  return spans;
+}
+
+/** Grow parent cells with the rendered prefix while reusing the complete span calculation. */
+export function visibleDimensionRowSpans(spans: readonly (readonly number[])[], visibleCount: number): number[][] {
+  const count = Math.min(spans.length, Math.max(0, Math.floor(visibleCount)));
+  return spans.slice(0, count).map((row, index) => row.map(span => Math.min(span, count - index)));
+}
diff --git a/src/modules/ele/EleImportPage.tsx b/src/modules/ele/EleImportPage.tsx
index e1eeaa1..da6ced2 100644
--- a/src/modules/ele/EleImportPage.tsx
+++ b/src/modules/ele/EleImportPage.tsx
@@ -1,6 +1,6 @@
 import { useCallback, useEffect, useRef, useState } from 'react';
 import { ArrowLeft, Upload, Zap } from 'lucide-react';
-import { fetchJson } from '../../auth/api-client';
+import { fetchJson, fetchAuthenticated } from '../../auth/api-client';
 import { useAuth } from '../../auth/useAuth';
 import { PageFrame } from '../../components/ui/surface';
 import { BatchTable } from './import-page/BatchTable';
@@ -17,17 +17,11 @@ import type {
   VehicleKindFilter,
 } from './import-page/types';
 
-function getJwt(): string | null {
-  return sessionStorage.getItem('bi_jwt');
-}
-
 async function uploadFile(file: File): Promise<UploadResult> {
   const fd = new FormData();
   fd.append('file', file);
-  const token = getJwt();
-  const res = await fetch('/api/ele/import', {
+  const res = await fetchAuthenticated('/api/ele/import', {
     method: 'POST',
-    headers: token ? { Authorization: `Bearer ${token}` } : {},
     body: fd,
   });
   const json = await res.json();
diff --git a/src/server/app.ts b/src/server/app.ts
index 929fe4c..843492f 100644
--- a/src/server/app.ts
+++ b/src/server/app.ts
@@ -3,6 +3,7 @@ import { Hono } from 'hono';
 import { cors } from 'hono/cors';
 import authRouter from './auth/login.js';
 import { authMiddleware } from './auth/middleware.js';
+import { createPreviewRouter, createPreviewMiddleware } from './auth/preview/routes.js';
 import eleRouter from './routes/ele/index.js';
 import energyRouter from './routes/energy/index.js';
 import feedbackRouter from './routes/feedback/index.js';
@@ -25,6 +26,8 @@ export function createApp(): Hono {
   // 登录接口公开，其余 API 统一经过认证与数据权限检查。
   app.route('/api/auth', authRouter);
   app.use('/api/*', authMiddleware);
+  app.route('/api/permission-preview', createPreviewRouter());
+  app.use('/api/*', createPreviewMiddleware());
 
   app.route('/api/vehicles', vehiclesRouter);
   app.route('/api/asset-assistant', assetAssistantRouter);
diff --git a/src/server/auth/login.ts b/src/server/auth/login.ts
index cfa608a..256fd91 100644
--- a/src/server/auth/login.ts
+++ b/src/server/auth/login.ts
@@ -1,8 +1,9 @@
 import { Hono } from 'hono';
 import jwt from 'jsonwebtoken';
 import pool from '../db.js';
-import type { AuthUser, JwtPayload, PermissionLevel } from './types.js';
-import { FULL_ACCESS_ROLES, DEPT_ACCESS_ROLES } from './types.js';
+import { identitySchema } from './preview/directory.js';
+import type { AuthUser, JwtPayload } from './types.js';
+import { resolvePermissionLevel } from '../../shared/auth/roles.js';
 
 const app = new Hono();
 
@@ -42,20 +43,15 @@ app.get('/exchange', async (c) => {
     const roleNames = userInfo.roles.map(r => r.roleName);
 
     // 确定权限级别
-    let permissionLevel: PermissionLevel = 'personal';
-    if (roleNames.some(r => FULL_ACCESS_ROLES.includes(r))) {
-      permissionLevel = 'full';
-    } else if (roleNames.some(r => DEPT_ACCESS_ROLES.includes(r))) {
-      permissionLevel = 'department';
-    }
+    const permissionLevel = resolvePermissionLevel(roleNames);
 
     // 查询 depCode 对应的部门名称
     let depName = '';
     if (userInfo.depCode) {
       try {
         const [rows] = await pool.execute(
-          'SELECT dep_name FROM tab_department WHERE dep_code = ? AND is_deleted = 0 LIMIT 1',
-          [userInfo.depCode]
+          `SELECT dep_name FROM ${identitySchema()}.tab_department WHERE dep_code = ? AND org_id = ? AND is_deleted = 0 LIMIT 1`,
+          [userInfo.depCode, userInfo.orgId]
         ) as [{ dep_name: string }[], unknown];
         depName = rows[0]?.dep_name || '';
       } catch (e: any) {
diff --git a/src/server/auth/manager-identity.test.ts b/src/server/auth/manager-identity.test.ts
new file mode 100644
index 0000000..fd09dce
--- /dev/null
+++ b/src/server/auth/manager-identity.test.ts
@@ -0,0 +1,17 @@
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { verifiedManagerIds } from './manager-identity.js';
+import { filterByPermission } from './permissions.js';
+import type { AuthUser } from './types.js';
+test('only a unique enabled identity mapping extends personal vehicle IDs; ambiguity fails closed', () => {
+  assert.deepEqual(verifiedManagerIds('old', [{ legacyId: 'old', vehicleId: 'new' }]), ['old', 'new']);
+  assert.deepEqual(verifiedManagerIds('old', [{ legacyId: 'old', vehicleId: null }]), ['old']);
+  assert.deepEqual(verifiedManagerIds('old', []), []);
+  assert.deepEqual(verifiedManagerIds('old', [{ legacyId: 'wrong', vehicleId: 'new' }]), []);
+  assert.deepEqual(verifiedManagerIds('old', [{ legacyId: 'old', vehicleId: 'new' }, { legacyId: 'old', vehicleId: 'other' }]), []);
+  const user: AuthUser = { userId: 'old', loginName: 'login', userName: '人', depCode: 'D', depName: '部门甲', permissionLevel: 'personal', roles: [], managerIds: ['old', 'new'] };
+  const items = [{ managerId: 'new', department: '部门乙' }, { managerId: 'other', department: '部门甲' }];
+  assert.deepEqual(filterByPermission(items, user), [items[0]]);
+  assert.deepEqual(filterByPermission(items, { ...user, managerIds: [] }), []);
+  assert.deepEqual(filterByPermission(items, { ...user, permissionLevel: 'department' }), [items[1]]);
+});
diff --git a/src/server/auth/manager-identity.ts b/src/server/auth/manager-identity.ts
new file mode 100644
index 0000000..2ef0086
--- /dev/null
+++ b/src/server/auth/manager-identity.ts
@@ -0,0 +1,20 @@
+import pool from '../db.js';
+
+/** Match login identifiers only, never human names. Ambiguous or disabled identities fail closed. */
+export async function resolveVehicleManagerIds(userId: string, loginName: string): Promise<string[]> {
+  const schema = process.env.BI_IDENTITY_SCHEMA || 'lingniu_prod';
+  if (!/^[a-zA-Z0-9_]+$/.test(schema)) throw new Error('Invalid identity schema');
+  const [rows] = await pool.query<any[]>(`SELECT CAST(u.id AS CHAR) legacyId, CAST(n.user_id AS CHAR) vehicleId
+    FROM \`${schema}\`.tab_user u
+    LEFT JOIN \`ry-cloud\`.sys_user n ON BINARY n.user_name=BINARY u.login_name
+      AND n.tenant_id=? AND n.del_flag='0' AND n.status='0'
+    WHERE u.id=? AND BINARY u.login_name=BINARY ? AND u.enabled=1 AND u.is_deleted=0
+      AND (SELECT COUNT(*) FROM \`${schema}\`.tab_user duplicate
+        WHERE BINARY duplicate.login_name=BINARY u.login_name AND duplicate.enabled=1 AND duplicate.is_deleted=0)=1`,
+    [process.env.BI_VEHICLE_IDENTITY_TENANT_ID || '000000', userId, loginName]);
+  return verifiedManagerIds(userId, rows);
+}
+export function verifiedManagerIds(userId: string, rows: { legacyId: string; vehicleId: string | null }[]): string[] {
+  if (rows.length !== 1 || rows[0].legacyId !== userId) return [];
+  return [...new Set([userId, ...(rows[0].vehicleId ? [rows[0].vehicleId] : [])])];
+}
diff --git a/src/server/auth/middleware.ts b/src/server/auth/middleware.ts
index 898fad9..9c0c287 100644
--- a/src/server/auth/middleware.ts
+++ b/src/server/auth/middleware.ts
@@ -1,5 +1,6 @@
 import type { Context, Next } from 'hono';
 import jwt from 'jsonwebtoken';
+import { resolveVehicleManagerIds } from './manager-identity.js';
 import type { JwtPayload, AuthUser } from './types.js';
 
 const JWT_SECRET = process.env.JWT_SECRET || 'ln-bi-default-secret';
@@ -41,20 +42,22 @@ export async function authMiddleware(c: Context, next: Next) {
 
   const token = authHeader.slice(7);
 
+  let payload: JwtPayload;
   try {
-    const payload = jwt.verify(token, JWT_SECRET) as JwtPayload;
-    const user: AuthUser = {
-      userId: payload.userId,
-      userName: payload.userName,
-      loginName: payload.loginName,
-      depCode: payload.depCode,
-      depName: payload.depName,
-      permissionLevel: payload.permissionLevel,
-      roles: payload.roles ?? [],
-    };
-    c.set('user', user);
-    return next();
+    payload = jwt.verify(token, JWT_SECRET) as JwtPayload;
   } catch {
     return c.json({ error: 'Invalid or expired token' }, 401);
   }
+  const user: AuthUser = {
+    userId: payload.userId, userName: payload.userName, loginName: payload.loginName,
+    depCode: payload.depCode, depName: payload.depName,
+    permissionLevel: payload.permissionLevel, roles: payload.roles ?? [],
+  };
+  try {
+    if (user.permissionLevel === 'personal') user.managerIds = await resolveVehicleManagerIds(user.userId, user.loginName);
+  } catch {
+    return c.json({ error: '账号数据范围暂不可用，请稍后重试' }, 503);
+  }
+  c.set('user', user);
+  return next();
 }
diff --git a/src/server/auth/permissions.ts b/src/server/auth/permissions.ts
index 68c1e6d..e5e671a 100644
--- a/src/server/auth/permissions.ts
+++ b/src/server/auth/permissions.ts
@@ -46,6 +46,6 @@ export function filterByPermission<T>(
   // personal: 仅看自己负责的车辆 (bd = userId)
   return items.filter(v => {
     const obj = v as any;
-    return obj.managerId === user.userId;
+    return (user.managerIds ?? [user.userId]).includes(obj.managerId);
   });
 }
diff --git a/src/server/auth/preview/directory.ts b/src/server/auth/preview/directory.ts
new file mode 100644
index 0000000..7ed3bd2
--- /dev/null
+++ b/src/server/auth/preview/directory.ts
@@ -0,0 +1,61 @@
+import pool from '../../db.js';
+import type { AuthUser, PermissionLevel } from '../types.js';
+import { FULL_ACCESS_ROLES, DEPT_ACCESS_ROLES, resolvePermissionLevel } from '../../../shared/auth/roles.js';
+
+export type DirectoryUser = AuthUser & { orgId: string };
+export interface UserDirectory {
+  get(userId: string): Promise<DirectoryUser | null>;
+  search(orgId: string, query: string, level: PermissionLevel | undefined, page: number): Promise<{ users: AuthUser[]; page: number; hasMore: boolean }>;
+}
+// This is the same identity source as the existing jump-token login, not the vehicle-system account IDs.
+export function identitySchema() {
+  const name = process.env.BI_IDENTITY_SCHEMA || 'lingniu_prod';
+  if (!/^[a-zA-Z0-9_]+$/.test(name)) throw new Error('Invalid identity schema');
+  return `\`${name}\``;
+}
+const publicUser = (user: DirectoryUser): AuthUser => {
+  const { orgId: _, ...identity } = user;
+  return identity;
+};
+export { publicUser };
+async function readUsers(where: string, values: unknown[], limit: number, offset = 0): Promise<DirectoryUser[]> {
+  const db = identitySchema();
+  const [rows] = await pool.query<any[]>(`SELECT CAST(u.id AS CHAR) userId, u.user_name userName,
+    u.login_name loginName, CAST(u.org_id AS CHAR) orgId, COALESCE(d.dep_code, '') depCode,
+    COALESCE(d.dep_name, '') depName FROM ${db}.tab_user u
+    LEFT JOIN ${db}.tab_department d ON d.id=u.dep_id AND d.is_deleted=0
+    WHERE u.is_deleted=0 AND u.enabled=1 AND ${where}
+    ORDER BY u.user_name, u.id LIMIT ? OFFSET ?`, [...values, limit, offset]);
+  if (!rows.length) return [];
+  const ids = rows.map(r => r.userId);
+  const [roleRows] = await pool.query<any[]>(`SELECT CAST(ur.user_id AS CHAR) userId, r.role_name roleName
+    FROM ${db}.tab_user_role ur JOIN ${db}.tab_role r ON r.id=ur.role_id AND r.is_deleted=0
+    JOIN ${db}.tab_user u ON u.id=ur.user_id AND r.org_id=u.org_id
+    WHERE ur.user_id IN (${ids.map(() => '?').join(',')})`, ids);
+  return rows.map(row => {
+    const roles = [...new Set<string>(roleRows.filter(r => r.userId === row.userId).map(r => r.roleName))].sort();
+    return { ...row, roles, permissionLevel: resolvePermissionLevel(roles) };
+  });
+}
+export const userDirectory: UserDirectory = {
+  async get(id) { return (await readUsers('u.id=?', [id], 1))[0] || null; },
+  async search(orgId, query, level, page) {
+    const values: unknown[] = [orgId];
+    let where = 'u.org_id=?';
+    if (query) {
+      // Escape LIKE wildcards; values are always parameters.
+      const term = `%${query.replace(/[!%_]/g, '!$&')}%`;
+      where += " AND (u.user_name LIKE ? ESCAPE '!' OR u.login_name LIKE ? ESCAPE '!' OR d.dep_name LIKE ? ESCAPE '!')";
+      values.push(term, term, term);
+    }
+    const hasRole = (roles: string[]) => {
+      values.push(...roles);
+      return `EXISTS (SELECT 1 FROM ${identitySchema()}.tab_user_role ur JOIN ${identitySchema()}.tab_role r ON r.id=ur.role_id WHERE ur.user_id=u.id AND r.org_id=u.org_id AND r.is_deleted=0 AND r.role_name IN (${roles.map(() => '?').join(',')}))`;
+    };
+    if (level === 'full') where += ` AND ${hasRole(FULL_ACCESS_ROLES)}`;
+    if (level === 'department') where += ` AND NOT ${hasRole(FULL_ACCESS_ROLES)} AND ${hasRole(DEPT_ACCESS_ROLES)}`;
+    if (level === 'personal') where += ` AND NOT ${hasRole([...FULL_ACCESS_ROLES, ...DEPT_ACCESS_ROLES])}`;
+    const users = await readUsers(where, values, 21, (page - 1) * 20);
+    return { users: users.slice(0, 20).map(publicUser), page, hasMore: users.length > 20 };
+  },
+};
diff --git a/src/server/auth/preview/preview.test.ts b/src/server/auth/preview/preview.test.ts
new file mode 100644
index 0000000..f86538e
--- /dev/null
+++ b/src/server/auth/preview/preview.test.ts
@@ -0,0 +1,149 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import { createPreviewService, type PreviewAudit } from './service.js';
+import { createPreviewMiddleware, createPreviewRouter } from './routes.js';
+import type { AuthUser } from '../types.js';
+import type { DirectoryUser } from './directory.js';
+import { resolvePermissionLevel } from '../../../shared/auth/roles.js';
+import { filterByPermission } from '../permissions.js';
+import { getSession } from '../../routes/asset-assistant/session.js';
+const identity = (id: string, level: 'full' | 'department' | 'personal' = 'personal'): DirectoryUser => ({
+  userId: id, loginName: id, userName: id, orgId: 'org', depCode: 'D1', depName: '部门甲',
+  roles: level === 'full' ? ['BI-Leader'] : level === 'department' ? ['BI-Leader-Dep'] : [], permissionLevel: level,
+});
+function setup() {
+  const actor = identity('authorized', 'full');
+  const users = new Map([actor, identity('personal'), identity('department', 'department'), identity('leader', 'full'), { ...identity('foreign'), orgId: 'another' }].map(u => [u.userId, u]));
+  const allowed = new Set([actor.userId]);
+  const events: PreviewAudit[] = [];
+  let now = 1000;
+  const service = createPreviewService({ managerIds: async id => [id], allowedIds: () => allowed, now: () => now,
+    audit: async event => { events.push(event); },
+    directory: { get: async id => users.get(id) || null, search: async (org, q, level, page) => ({ users: [...users.values()].filter(u => u.orgId === org && u.userName.includes(q) && (!level || level === u.permissionLevel)), page, hasMore: false }) },
+  });
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => { c.set('user', users.get(c.req.header('Test-Actor') || '') || identity('outsider')); await next(); });
+  app.route('/api/permission-preview', createPreviewRouter(service));
+  app.use('*', createPreviewMiddleware(service));
+  app.all('*', c => c.json({ user: c.get('user'), visible: filterByPermission([
+    { id: 1, department: '部门甲', managerId: 'personal' }, { id: 2, department: '部门甲', managerId: 'colleague' }, { id: 3, department: '部门乙', managerId: 'other' },
+  ], c.get('user')) }));
+  const request = (path: string, token?: string, method = 'GET', body?: unknown, as = actor.userId) => app.request(path, { method,
+    headers: { 'Test-Actor': as, ...(token ? { 'X-BI-Preview': token } : {}), 'Content-Type': 'application/json' },
+    ...(body !== undefined ? { body: JSON.stringify(body) } : {}),
+  });
+  return { actor, users, allowed, events, service, request, advance: () => { now += 30 * 60 * 1000; } };
+}
+test('login and preview share role precedence', () => {
+  assert.equal(resolvePermissionLevel([]), 'personal');
+  assert.equal(resolvePermissionLevel(['BI-Leader-Dep']), 'department');
+  for (const role of ['BI-Leader', '所有权限', '数智中心']) assert.equal(resolvePermissionLevel(['BI-Leader-Dep', role]), 'full');
+});
+test('only explicitly authorized actors can search or start; local bypass and full role alone never grant preview', async () => {
+  const s = setup();
+  for (const user of ['outsider', 'leader', 'dev-local']) {
+    assert.equal((await s.request('/api/permission-preview/context', undefined, 'GET', undefined, user)).status, 200);
+    assert.equal((await (await s.request('/api/permission-preview/context', undefined, 'GET', undefined, user)).json()).canPreview, false);
+    assert.equal((await s.request('/api/permission-preview/users', undefined, 'GET', undefined, user)).status, 403);
+    assert.equal((await s.request('/api/permission-preview/start', undefined, 'POST', { userId: 'personal' }, user)).status, 403);
+  }
+  assert.equal((await s.request('/api/permission-preview/start', undefined, 'POST', { userId: 'foreign' })).status, 403);
+  assert.equal((await s.request('/api/permission-preview/start', undefined, 'POST', { userId: 'personal', permissionLevel: 'full' })).status, 400);
+});
+test('the actual target identity is applied to list, aggregate and detail queries; actor rights are never unioned', async () => {
+  const s = setup();
+  for (const [id, expected] of [['personal', [1]], ['department', [1, 2]], ['leader', [1, 2, 3]]] as const) {
+    const { previewToken } = await s.service.start(s.actor, id);
+    for (const [path, method] of [['/api/vehicles/list', 'GET'], ['/api/vehicles/analysis', 'POST'], ['/api/vehicles/analysis/details', 'POST']]) {
+      const response = await s.request(path, previewToken, method);
+      assert.equal(response.status, 200);
+      const data = await response.json();
+      assert.deepEqual(data.visible.map((v: { id: number }) => v.id), expected);
+      assert.equal(data.user.userId, id);
+      assert.equal(data.user.preview.actorId, s.actor.userId);
+      assert.equal(response.headers.get('cache-control'), 'no-store');
+    }
+  }
+  assert.equal((await (await s.request('/api/vehicles/list')).json()).user.userId, s.actor.userId);
+});
+test('user search returns no directory list without keywords, while partial keywords still match', async () => {
+  const s = setup();
+  for (const suffix of ['', '?q=%20%20', '?level=full']) {
+    const res = await s.request(`/api/permission-preview/users${suffix}`);
+    assert.equal(res.status, 200);
+    assert.deepEqual(await res.json(), { users: [], page: 1, hasMore: false });
+  }
+  const res = await s.request('/api/permission-preview/users?q=erson');
+  assert.deepEqual((await res.json()).users.map((u: AuthUser) => u.userId), ['personal']);
+});
+test('tokens are actor-bound, revocable, expiring, and fail closed for deleted users or changed organizations', async () => {
+  const s = setup();
+  const { previewToken } = await s.service.start(s.actor, 'personal');
+  assert.equal((await s.request('/api/vehicles/list', previewToken, 'GET', undefined, 'leader')).status, 403);
+  assert.equal((await s.request('/api/vehicles/list', 'forged')).status, 410);
+  s.allowed.clear();
+  assert.equal((await s.request('/api/vehicles/list', previewToken)).status, 403);
+  s.allowed.add(s.actor.userId);
+  s.users.get('personal')!.orgId = 'foreign';
+  assert.equal((await s.request('/api/vehicles/list', previewToken)).status, 403);
+  s.users.get('personal')!.orgId = 'org';
+  s.users.get('personal')!.permissionLevel = 'department';
+  assert.equal((await (await s.request('/api/vehicles/list', previewToken)).json()).visible.length, 2);
+  s.users.delete('personal');
+  assert.equal((await s.request('/api/vehicles/list', previewToken)).status, 403);
+  s.advance();
+  assert.equal((await s.request('/api/vehicles/list', previewToken)).status, 410);
+});
+test('all writes, side-effect GETs and unrecognized POSTs are blocked; audited read POSTs and isolated session cleanup work', async () => {
+  const s = setup(), { previewToken } = await s.service.start(s.actor, 'personal');
+  for (const [path, method] of [['/api/feedback/upload', 'POST'], ['/api/feedback/submit', 'POST'], ['/api/feedback/1', 'PATCH'], ['/api/ele/import', 'POST'], ['/api/scheduling/notify', 'POST'], ['/api/asset-assistant/feedback', 'POST'], ['/api/vehicles/refresh', 'GET'], ['/api/vehicles/debug', 'HEAD'], ['/api/new-write-route', 'POST']]) {
+    const res = await s.request(path, previewToken, method);
+    assert.equal(res.status, 403, path);
+    if (method !== 'HEAD') assert.equal((await res.json()).code, 'PREVIEW_READ_ONLY');
+  }
+  assert.equal((await s.request('/api/asset-assistant/ask', previewToken, 'POST')).status, 200);
+  assert.equal((await s.request('/api/asset-assistant/session/test', previewToken, 'DELETE')).status, 200);
+  assert.ok(s.events.some(e => e.event === 'blocked-write'));
+  assert.ok(s.events.every(e => !JSON.stringify(e).includes(previewToken)));
+  await s.request('/api/permission-preview/stop', previewToken, 'POST');
+  assert.equal((await s.request('/api/vehicles/list', previewToken)).status, 410);
+  assert.ok(s.events.some(e => e.event === 'stop'));
+});
+test('AI sessions are isolated between real target, actor and every preview session', () => {
+  const real = identity('target');
+  const a = { ...real, preview: { actorId: 'actor-a', sessionId: 'one' } };
+  const session = getSession(a, null);
+  for (const user of [real, { ...a, preview: { actorId: 'actor-b', sessionId: 'one' } }, { ...a, preview: { actorId: 'actor-a', sessionId: 'two' } }])
+    assert.throws(() => getSession(user, null, session.id), /会话已过期/);
+  assert.equal(getSession(a, null, session.id).id, session.id);
+});
+test('audit failure never grants a session or returns target data', async () => {
+  const actor = identity('actor');
+  const service = createPreviewService({ managerIds: async id => [id], allowedIds: () => new Set(['actor']), directory: { get: async id => identity(id), search: async () => ({ users: [], page: 1, hasMore: false }) }, audit: async () => { throw new Error('disk unavailable'); } });
+  await assert.rejects(service.start(actor, 'target'), /disk unavailable/);
+});
+
+test('local preview requires both explicit dev switches, an authorized organization anchor, and never works in production', async () => {
+  const previous = { NODE_ENV: process.env.NODE_ENV, DEV_BYPASS_AUTH: process.env.DEV_BYPASS_AUTH, DEV_PERMISSION_PREVIEW: process.env.DEV_PERMISSION_PREVIEW, DEV_PERMISSION_PREVIEW_USER_ID: process.env.DEV_PERMISSION_PREVIEW_USER_ID };
+  try {
+    const actor = identity('dev-local', 'full'), anchor = identity('anchor');
+    const service = createPreviewService({ allowedIds: () => new Set(['anchor']), directory: { get: async id => id === 'anchor' ? anchor : identity(id), search: async () => ({ users: [], page: 1, hasMore: false }) }, audit: async () => {}, managerIds: async id => [id] });
+    process.env.DEV_PERMISSION_PREVIEW_USER_ID = 'anchor';
+    process.env.NODE_ENV = 'development'; process.env.DEV_BYPASS_AUTH = '1'; process.env.DEV_PERMISSION_PREVIEW = '0';
+    assert.equal((await service.context(actor)).canPreview, false);
+    process.env.DEV_PERMISSION_PREVIEW = '1';
+    assert.equal((await service.context(actor)).canPreview, true);
+    const session = await service.start(actor, 'target');
+    assert.equal((await service.current(actor, session.previewToken)).user.userId, 'target');
+    process.env.NODE_ENV = 'production';
+    assert.equal((await service.context(actor)).canPreview, false);
+    await assert.rejects(service.current(actor, session.previewToken), /没有权限/);
+    process.env.NODE_ENV = 'development'; process.env.DEV_BYPASS_AUTH = '0';
+    assert.equal((await service.context(actor)).canPreview, false);
+    process.env.DEV_BYPASS_AUTH = '1'; process.env.DEV_PERMISSION_PREVIEW_USER_ID = 'unauthorized';
+    assert.equal((await service.context(actor)).canPreview, false);
+  } finally {
+    for (const [key,value] of Object.entries(previous)) { if (value === undefined) delete process.env[key]; else process.env[key] = value; }
+  }
+});
diff --git a/src/server/auth/preview/read-only-pages.test.ts b/src/server/auth/preview/read-only-pages.test.ts
new file mode 100644
index 0000000..0b6d1d8
--- /dev/null
+++ b/src/server/auth/preview/read-only-pages.test.ts
@@ -0,0 +1,56 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import pool from '../../db.js';
+import type { AuthUser } from '../types.js';
+import assistantRouter from '../../routes/asset-assistant/index.js';
+import feedbackRouter from '../../routes/feedback/index.js';
+import eleRouter from '../../routes/ele/index.js';
+
+function previewApp() {
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => {
+    c.set('user', { userId: 'target', userName: 'Target', loginName: 'target', depCode: '', depName: '',
+      roles: ['BI-Leader'], permissionLevel: 'full', preview: { actorId: 'actor', sessionId: 'preview' } });
+    await next();
+  });
+  app.route('/assistant', assistantRouter);
+  app.route('/feedback', feedbackRouter);
+  app.route('/ele', eleRouter);
+  return app;
+}
+const paths = ['/assistant/gaps', '/feedback/mine', '/feedback/list', '/ele/list', '/ele/batches', '/ele/aggregate'];
+
+test('preview gaps, feedback and charge pages perform only SELECT without schema initialization or retention writes', async (t) => {
+  const statements: { sql: string; values: unknown }[] = [];
+  t.mock.method(pool, 'query', async (sql: string, values: unknown) => {
+    statements.push({ sql, values });
+    return [[], []];
+  });
+  const app = previewApp();
+  for (const path of paths) assert.equal((await app.request(path)).status, 200, path);
+  assert.ok(statements.length >= paths.length);
+  assert.ok(statements.every(({ sql }) => /^\s*SELECT\b/.test(sql)));
+  const gap = statements.find(({ sql }) => sql.includes('FROM bi_asset_ai_gaps'))!;
+  assert.match(gap.sql, /last_seen >= DATE_SUB/);
+  assert.deepEqual(gap.values, ['target']);
+  const feedback = statements.find(({ sql }) => sql.includes('WHERE user_id = ?'))!;
+  assert.deepEqual(feedback.values, ['target']);
+});
+
+test('preview pages report missing storage as 503 without attempting to repair or initialize it', async (t) => {
+  const statements: string[] = [];
+  t.mock.method(pool, 'query', async (sql: string) => {
+    statements.push(sql);
+    throw Object.assign(new Error('missing'), { code: 'ER_NO_SUCH_TABLE' });
+  });
+  const app = previewApp();
+  for (const path of paths) {
+    const response = await app.request(path);
+    assert.equal(response.status, 503, path);
+    const body = await response.json();
+    assert.ok(body.error || body.message, path);
+  }
+  assert.equal(statements.length, paths.length);
+  assert.ok(statements.every(sql => /^\s*SELECT\b/.test(sql)));
+});
diff --git a/src/server/auth/preview/routes.ts b/src/server/auth/preview/routes.ts
new file mode 100644
index 0000000..bd2024e
--- /dev/null
+++ b/src/server/auth/preview/routes.ts
@@ -0,0 +1,68 @@
+import { Hono, type Context, type Next } from 'hono';
+import { bodyLimit } from 'hono/body-limit';
+import type { AuthUser, PermissionLevel } from '../types.js';
+import { previewService, PreviewError, type createPreviewService } from './service.js';
+
+type Service = ReturnType<typeof createPreviewService>;
+function failure(c: Context, error: unknown) {
+  if (error instanceof PreviewError) return c.json({ error: error.message, code: error.code }, error.status);
+  console.error('permission-preview unavailable');
+  return c.json({ error: '权限预览暂不可用，请稍后重试', code: 'PREVIEW_UNAVAILABLE' }, 503);
+}
+export function createPreviewRouter(service: Service = previewService) {
+  const router = new Hono<{ Variables: { user: AuthUser } }>();
+  router.use('*', bodyLimit({ maxSize: 2048 }));
+  router.use('*', async (c, next) => {
+    c.header('Cache-Control', 'no-store');
+    if (!c.get('user')) return c.json({ error: '请先登录' }, 401);
+    try { await next(); } catch (e) { return failure(c, e); }
+  });
+  router.get('/context', async c => c.json(await service.context(c.get('user'))));
+  router.get('/users', async c => {
+    const q = (c.req.query('q') || '').trim(), level = c.req.query('level') || undefined;
+    const page = Number(c.req.query('page') || '1');
+    if (q.length > 80 || !Number.isSafeInteger(page) || page < 1 || page > 10000 || (level && !['full', 'department', 'personal'].includes(level)))
+      return c.json({ error: '搜索条件无效' }, 400);
+    return c.json(await service.search(c.get('user'), q, level as PermissionLevel | undefined, page));
+  });
+  router.post('/start', async c => {
+    const body = await c.req.json().catch(() => null);
+    if (!body || typeof body.userId !== 'string' || !/^[\w-]{1,64}$/.test(body.userId) || Object.keys(body).some(key => key !== 'userId'))
+      return c.json({ error: '请选择有效用户' }, 400);
+    return c.json(await service.start(c.get('user'), body.userId));
+  });
+  router.get('/current', async c => {
+    const result = await service.current(c.get('user'), c.req.header('X-BI-Preview') || '');
+    return c.json({ user: result.user, expiresAt: result.expiresAt });
+  });
+  router.post('/stop', async c => {
+    await service.stop(c.get('user'), c.req.header('X-BI-Preview') || '');
+    return c.json({ ok: true });
+  });
+  router.onError((error, c) => failure(c, error));
+  return router;
+}
+
+// These POSTs only query data (AI previews suppress gap recording). Everything else is denied by default.
+const READ_POSTS = new Set(['/api/vehicles/analysis', '/api/vehicles/analysis/details', '/api/asset-assistant/ask', '/api/asset-assistant/export']);
+export function createPreviewMiddleware(service: Service = previewService) {
+  return async (c: Context, next: Next) => {
+    const token = c.req.header('X-BI-Preview');
+    if (!token) return next();
+    const actor = c.get('user') as AuthUser | undefined;
+    if (!actor) return c.json({ error: '请先登录' }, 401);
+    c.header('Cache-Control', 'no-store');
+    try {
+      const session = await service.current(actor, token);
+      const readOnly = (!['/api/vehicles/refresh', '/api/vehicles/debug'].includes(c.req.path) && ['GET', 'HEAD'].includes(c.req.method)) || (c.req.method === 'POST' && READ_POSTS.has(c.req.path))
+        || (c.req.method === 'DELETE' && /^\/api\/asset-assistant\/session\/[^/]+$/.test(c.req.path));
+      await service.audit({ event: readOnly ? 'read' : 'blocked-write', actorId: actor.userId, targetId: session.user.userId,
+        sessionId: session.sessionId, method: c.req.method, path: c.req.path, permissionLevel: session.user.permissionLevel });
+      if (!readOnly) return c.json({ error: '权限预览为只读模式，请退出预览后操作', code: 'PREVIEW_READ_ONLY' }, 403);
+      c.set('actor', actor);
+      c.set('user', { ...session.user, preview: { actorId: actor.userId, sessionId: session.sessionId } } satisfies AuthUser);
+    } catch (error) { return failure(c, error); }
+    // Do not catch downstream failures as authentication errors.
+    return next();
+  };
+}
diff --git a/src/server/auth/preview/service.ts b/src/server/auth/preview/service.ts
new file mode 100644
index 0000000..ef62fdf
--- /dev/null
+++ b/src/server/auth/preview/service.ts
@@ -0,0 +1,99 @@
+import { resolveVehicleManagerIds } from '../manager-identity.js';
+import { randomBytes } from 'node:crypto';
+import { appendFile, mkdir } from 'node:fs/promises';
+import { dirname, resolve } from 'node:path';
+import type { AuthUser } from '../types.js';
+import { publicUser, userDirectory, type UserDirectory, type DirectoryUser } from './directory.js';
+
+const TTL = 30 * 60 * 1000;
+// Verified legacy SSO accounts; override with a comma-separated list of immutable user IDs.
+export const DEFAULT_PREVIEW_USER_IDS = [
+  '1014807041625047040', // puhongxia (default local preview organization anchor)
+  '1105261382487539712', // zhanglan
+  '1116631120763437056', // shishengliang
+];
+export function isLocalPreviewEnabled(actor: AuthUser) {
+  return actor?.userId === 'dev-local' && actor.loginName === 'dev-local'
+    && process.env.NODE_ENV !== 'production' && process.env.DEV_BYPASS_AUTH === '1' && process.env.DEV_PERMISSION_PREVIEW === '1';
+}
+export const configuredPreviewIds = () => new Set((process.env.BI_PERMISSION_PREVIEW_USER_IDS ?? DEFAULT_PREVIEW_USER_IDS.join(',')).split(',').map(s => s.trim()).filter(Boolean));
+export type PreviewAudit = { event: string; actorId: string; targetId?: string; sessionId?: string; method?: string; path?: string; permissionLevel?: string };
+export async function writePreviewAudit(event: PreviewAudit) {
+  const path = resolve(process.env.BI_PERMISSION_PREVIEW_AUDIT_FILE || 'logs/permission-preview.jsonl');
+  await mkdir(dirname(path), { recursive: true, mode: 0o700 });
+  await appendFile(path, JSON.stringify({ time: new Date().toISOString(), ...event }) + '\n', { mode: 0o600 });
+}
+export class PreviewError extends Error {
+  constructor(public code: string, message: string, public status: 400 | 403 | 410 | 503 = 403) { super(message); }
+}
+type Session = { actorId: string; targetId: string; id: string; expires: number };
+export function createPreviewService(options: { directory?: UserDirectory; allowedIds?: () => Set<string>; audit?: (event: PreviewAudit) => Promise<void>; now?: () => number; managerIds?: (userId: string, loginName: string) => Promise<string[]> } = {}) {
+  const directory = options.directory || userDirectory;
+  const managerIds = options.managerIds || resolveVehicleManagerIds;
+  const allowedIds = options.allowedIds || configuredPreviewIds;
+  const audit = options.audit || writePreviewAudit;
+  const now = options.now || Date.now;
+  const sessions = new Map<string, Session>();
+  const clean = () => { for (const [token, s] of sessions) if (s.expires <= now()) sessions.delete(token); };
+  async function authorized(actor: AuthUser): Promise<DirectoryUser> {
+    if (isLocalPreviewEnabled(actor)) {
+      const anchorId = process.env.DEV_PERMISSION_PREVIEW_USER_ID || DEFAULT_PREVIEW_USER_IDS[0];
+      if (!allowedIds().has(anchorId)) throw new PreviewError('PREVIEW_REVOKED', '本地预览未配置有效授权范围');
+      const anchor = await directory.get(anchorId);
+      if (!anchor) throw new PreviewError('PREVIEW_REVOKED', '本地预览组织范围不可用');
+      return anchor;
+    }
+    if (!actor || !allowedIds().has(actor.userId)) throw new PreviewError('PREVIEW_REVOKED', '当前账号没有权限视角预览授权');
+    const current = await directory.get(actor.userId);
+    if (!current || current.loginName !== actor.loginName) throw new PreviewError('PREVIEW_REVOKED', '预览授权账号已失效，请重新登录');
+    return current;
+  }
+  async function targetFor(actor: DirectoryUser, targetId: string) {
+    const target = await directory.get(targetId);
+    if (!target || !actor.orgId || target.orgId !== actor.orgId) throw new PreviewError('PREVIEW_TARGET_UNAVAILABLE', '该用户已停用或不在可预览的组织内');
+    return target.permissionLevel === 'personal' ? { ...target, managerIds: await managerIds(target.userId, target.loginName) } : target;
+  }
+  return {
+    async context(actor: AuthUser) {
+      if (!actor || (!isLocalPreviewEnabled(actor) && !allowedIds().has(actor.userId))) return { canPreview: false, actor };
+      try { await authorized(actor); return { canPreview: true, actor }; }
+      catch (error) { if (error instanceof PreviewError) return { canPreview: false, actor }; throw error; }
+    },
+    async search(actor: AuthUser, query: string, level: 'full' | 'department' | 'personal' | undefined, page: number) {
+      const identity = await authorized(actor);
+      const term = query.trim();
+      if (!term) return { users: [], page: 1, hasMore: false };
+      return directory.search(identity.orgId, term, level, page);
+    },
+    async start(actor: AuthUser, targetId: string) {
+      const identity = await authorized(actor), target = await targetFor(identity, targetId);
+      clean();
+      if (sessions.size >= 1000) throw new PreviewError('PREVIEW_BUSY', '预览会话已满，请稍后重试', 503);
+      const token = randomBytes(32).toString('base64url');
+      const s = { actorId: actor.userId, targetId, id: randomBytes(12).toString('hex'), expires: now() + TTL };
+      await audit({ event: 'start', actorId: actor.userId, targetId, sessionId: s.id, permissionLevel: target.permissionLevel });
+      // Bound per-user sessions, preserving a small number of independent tabs.
+      const own = [...sessions].filter(([, value]) => value.actorId === actor.userId);
+      while (own.length >= 5) sessions.delete(own.shift()![0]);
+      sessions.set(token, s);
+      return { previewToken: token, user: publicUser(target), expiresAt: new Date(s.expires).toISOString() };
+    },
+    async current(actor: AuthUser, token: string) {
+      const s = sessions.get(token);
+      if (!s || s.expires <= now()) { sessions.delete(token); throw new PreviewError('PREVIEW_EXPIRED', '预览已过期，请重新选择用户', 410); }
+      if (s.actorId !== actor.userId) throw new PreviewError('PREVIEW_INVALID', '预览会话与登录账号不匹配');
+      const identity = await authorized(actor), target = await targetFor(identity, s.targetId);
+      return { user: publicUser(target), expiresAt: new Date(s.expires).toISOString(), sessionId: s.id };
+    },
+    async stop(actor: AuthUser, token: string) {
+      const s = sessions.get(token);
+      if (s && s.actorId !== actor.userId) throw new PreviewError('PREVIEW_INVALID', '预览会话与登录账号不匹配');
+      if (s) {
+        sessions.delete(token);
+        await audit({ event: 'stop', actorId: actor.userId, targetId: s.targetId, sessionId: s.id });
+      }
+    },
+    audit,
+  };
+}
+export const previewService = createPreviewService();
diff --git a/src/server/auth/types.ts b/src/server/auth/types.ts
index 20112bb..bc96b35 100644
--- a/src/server/auth/types.ts
+++ b/src/server/auth/types.ts
@@ -1,6 +1,10 @@
 export type PermissionLevel = 'full' | 'department' | 'personal';
 
 export interface AuthUser {
+  /** Server-only preview identity; never accepted from client input. */
+  preview?: { actorId: string; sessionId: string };
+  /** Verified legacy/current vehicle identities, resolved only on the server. */
+  managerIds?: string[];
   userId: string;
   userName: string;
   loginName: string;
diff --git a/src/server/routes/asset-assistant/gaps.ts b/src/server/routes/asset-assistant/gaps.ts
index a1b2820..10929f3 100644
--- a/src/server/routes/asset-assistant/gaps.ts
+++ b/src/server/routes/asset-assistant/gaps.ts
@@ -58,13 +58,15 @@ export const gapStore = {
       [userId, fingerprint, demand, reason],
     );
   },
-  async list(userId: string | null): Promise<DemandGap[]> {
-    await ensure();
-    await purge();
+  async list(userId: string | null, options: { readOnly?: boolean } = {}): Promise<DemandGap[]> {
+    if (!options.readOnly) {
+      await ensure();
+      await purge();
+    }
     const [rows] = await pool.query<RowDataPacket[]>(
       `SELECT id,demand,reason,status,occurrences,
       DATE_FORMAT(first_seen,'%Y-%m-%dT%H:%i:%sZ') firstSeen, DATE_FORMAT(last_seen,'%Y-%m-%dT%H:%i:%sZ') lastSeen
-      FROM bi_asset_ai_gaps ${userId ? "WHERE user_id = ?" : ""} ORDER BY last_seen DESC LIMIT 200`,
+      FROM bi_asset_ai_gaps WHERE ${userId ? "user_id = ? AND " : ""}last_seen >= DATE_SUB(UTC_TIMESTAMP(), INTERVAL 90 DAY) ORDER BY last_seen DESC LIMIT 200`,
       userId ? [userId] : [],
     );
     return rows as DemandGap[];
diff --git a/src/server/routes/asset-assistant/index.ts b/src/server/routes/asset-assistant/index.ts
index bf69001..9d7c53e 100644
--- a/src/server/routes/asset-assistant/index.ts
+++ b/src/server/routes/asset-assistant/index.ts
@@ -59,6 +59,7 @@ router.get("/gaps", async (c) => {
     return c.json({
       items: await gapStore.list(
         c.req.query("scope") === "all" ? null : user.userId,
+        { readOnly: !!user.preview },
       ),
       canManage: manage,
     });
@@ -502,8 +503,10 @@ router.post("/ask", async (c) => {
         if (unanswered?.length) demand = `${unanswered.map(item => `${item.question}：${item.reason}`).join("；")}（原问题：${demand}）`.slice(0, 600);
         let recorded = false;
         try {
-          await gapStore.record(user.userId, demand, gapReason);
-          recorded = true;
+          if (!user.preview) {
+            await gapStore.record(user.userId, demand, gapReason);
+            recorded = true;
+          }
         } catch {
           /* Report failure explicitly, never pretend it was persisted. */
         }
@@ -518,8 +521,10 @@ router.post("/ask", async (c) => {
       if (!controller.signal.aborted) {
         let recorded = false;
         try {
-          await gapStore.record(user.userId, demand, "generation");
-          recorded = true;
+          if (!user.preview) {
+            await gapStore.record(user.userId, demand, "generation");
+            recorded = true;
+          }
         } catch {
           /* No raw error or query payload in logs. */
         }
diff --git a/src/server/routes/asset-assistant/session.ts b/src/server/routes/asset-assistant/session.ts
index 2b5b4f0..97e5796 100644
--- a/src/server/routes/asset-assistant/session.ts
+++ b/src/server/routes/asset-assistant/session.ts
@@ -40,6 +40,9 @@ const owner = (u: AuthUser) =>
         u.depCode,
         u.permissionLevel,
         [...u.roles].sort(),
+        [...(u.managerIds ?? [u.userId])].sort(),
+        u.preview?.actorId ?? null,
+        u.preview?.sessionId ?? null,
       ]),
     )
     .digest("hex");
diff --git a/src/server/routes/ele/index.ts b/src/server/routes/ele/index.ts
index 7801e61..7fc6072 100644
--- a/src/server/routes/ele/index.ts
+++ b/src/server/routes/ele/index.ts
@@ -2,9 +2,17 @@ import { Hono } from 'hono';
 import type { RowDataPacket, ResultSetHeader } from 'mysql2';
 import * as XLSX from 'xlsx';
 import pool from '../../db.js';
+import type { AuthUser } from '../../auth/types.js';
 import { ensureChargeRecordTable } from './migration.js';
 
-const app = new Hono();
+const app = new Hono<{ Variables: { user: AuthUser } }>();
+
+app.onError((error, c) => {
+  if (c.get('user')?.preview && ['ER_NO_SUCH_TABLE', 'ER_BAD_FIELD_ERROR'].includes((error as { code?: string }).code || ''))
+    return c.json({ message: '充电数据存储尚未就绪，权限预览不会初始化或更新表结构，请联系管理员。', code: 'PREVIEW_ELE_STORAGE_UNAVAILABLE' }, 503);
+  console.error(error);
+  return c.text('Internal Server Error', 500);
+});
 
 // 与 xlsx 列名对齐
 const COL = {
@@ -259,7 +267,7 @@ app.post('/import', async (c) => {
 // GET /api/ele/list — 分页列表（最新优先）
 // =========================================================
 app.get('/list', async (c) => {
-  await ensureChargeRecordTable();
+  if (!c.get('user')?.preview) await ensureChargeRecordTable();
   const page = Math.max(1, Number(c.req.query('page')) || 1);
   const limit = Math.min(200, Math.max(1, Number(c.req.query('limit')) || 50));
   const kind = c.req.query('kind') || '';
@@ -306,7 +314,7 @@ app.get('/list', async (c) => {
 // GET /api/ele/batches — 批次列表
 // =========================================================
 app.get('/batches', async (c) => {
-  await ensureChargeRecordTable();
+  if (!c.get('user')?.preview) await ensureChargeRecordTable();
   const [rows] = await pool.query<RowDataPacket[]>(
     `SELECT batch_id,
             MIN(imported_at) AS imported_at,
@@ -327,7 +335,7 @@ app.get('/batches', async (c) => {
 // GET /api/ele/aggregate — 聚合统计
 // =========================================================
 app.get('/aggregate', async (c) => {
-  await ensureChargeRecordTable();
+  if (!c.get('user')?.preview) await ensureChargeRecordTable();
   // 全量分类汇总
   const [overallRows] = await pool.query<RowDataPacket[]>(
     `SELECT vehicle_kind,
diff --git a/src/server/routes/feedback/index.ts b/src/server/routes/feedback/index.ts
index fb779a6..a885a45 100644
--- a/src/server/routes/feedback/index.ts
+++ b/src/server/routes/feedback/index.ts
@@ -5,7 +5,14 @@ import type { AuthUser } from '../../auth/types.js';
 import { canManageFeedback } from '../../auth/types.js';
 import { uploadFeedbackImage } from './oss.js';
 
-const app = new Hono();
+const app = new Hono<{ Variables: { user: AuthUser } }>();
+
+app.onError((error, c) => {
+  if (c.get('user')?.preview && ['ER_NO_SUCH_TABLE', 'ER_BAD_FIELD_ERROR'].includes((error as { code?: string }).code || ''))
+    return c.json({ message: '反馈存储尚未就绪，权限预览不会初始化或更新表结构，请联系管理员。', code: 'PREVIEW_FEEDBACK_STORAGE_UNAVAILABLE' }, 503);
+  console.error(error);
+  return c.text('Internal Server Error', 500);
+});
 
 const MAX_IMAGE_SIZE = 5 * 1024 * 1024; // 5 MB
 const ALLOWED_MIME = new Set(['image/png', 'image/jpeg', 'image/webp', 'image/gif']);
@@ -116,7 +123,7 @@ app.post('/upload', async (c) => {
 
 // GET /api/feedback/mine — 当前用户的反馈历史
 app.get('/mine', async (c) => {
-  await ensureTable();
+  if (!c.get('user')?.preview) await ensureTable();
   const user = (c as { get?: (k: string) => unknown }).get?.('user') as AuthUser | undefined;
   if (!user?.userId) return c.json({ items: [] });
   const [rows] = await pool.query<RowDataPacket[]>(
@@ -133,7 +140,7 @@ app.get('/mine', async (c) => {
 
 // GET /api/feedback/list — 管理列表（仅 BI-ADMIN-FEEDBACK / 全量权限）
 app.get('/list', async (c) => {
-  await ensureTable();
+  if (!c.get('user')?.preview) await ensureTable();
   const user = (c as { get?: (k: string) => unknown }).get?.('user') as AuthUser | undefined;
   if (!canManageFeedback(user?.roles)) {
     return c.json({ ok: false, message: '无权限' }, 403);
diff --git a/src/server/routes/mileage/daily-report-preview.test.ts b/src/server/routes/mileage/daily-report-preview.test.ts
new file mode 100644
index 0000000..bc10c5f
--- /dev/null
+++ b/src/server/routes/mileage/daily-report-preview.test.ts
@@ -0,0 +1,46 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import pool from '../../db.js';
+import type { AuthUser } from '../../auth/types.js';
+import dailyReportRouter from './daily-report.js';
+import { DailyReportStorageUnavailable, getDailyReportSnapshot, listDailyReportHistory } from './daily-report-store.js';
+
+test('preview report storage reads never initialize or write tables, including missing-table failures', async (t) => {
+  const statements: string[] = [];
+  let missing = false;
+  t.mock.method(pool, 'query', async (sql: string) => {
+    statements.push(sql);
+    if (missing) throw Object.assign(new Error('missing'), { code: 'ER_NO_SUCH_TABLE' });
+    return [[], []];
+  });
+  assert.equal(await getDailyReportSnapshot('2026-09-28', { readOnly: true }), null);
+  assert.deepEqual(await listDailyReportHistory(90, { readOnly: true }), { items: [], latestDate: null });
+  missing = true;
+  await assert.rejects(getDailyReportSnapshot('2026-09-28', { readOnly: true }), DailyReportStorageUnavailable);
+  await assert.rejects(listDailyReportHistory(90, { readOnly: true }), DailyReportStorageUnavailable);
+  assert.equal(statements.length, 4);
+  assert.ok(statements.every(sql => /^SELECT\b/.test(sql)));
+});
+
+test('both preview report endpoints return an actionable error without DDL when storage is absent', async (t) => {
+  const statements: string[] = [];
+  t.mock.method(pool, 'query', async (sql: string) => {
+    statements.push(sql);
+    throw Object.assign(new Error('missing'), { code: 'ER_NO_SUCH_TABLE' });
+  });
+  const app = new Hono<{ Variables: { user: AuthUser } }>();
+  app.use('*', async (c, next) => {
+    c.set('user', { userId: 'target', userName: 'Target', loginName: 'target', depCode: '', depName: '',
+      roles: [], permissionLevel: 'personal', preview: { actorId: 'actor', sessionId: 'preview' } });
+    await next();
+  });
+  app.route('/reports', dailyReportRouter);
+  for (const path of ['/reports?date=2026-09-28', '/reports/history']) {
+    const response = await app.request(path);
+    assert.equal(response.status, 503);
+    assert.equal((await response.json()).code, 'PREVIEW_REPORT_STORAGE_UNAVAILABLE');
+  }
+  assert.equal(statements.length, 2);
+  assert.ok(statements.every(sql => /^SELECT\b/.test(sql)));
+});
diff --git a/src/server/routes/mileage/daily-report-service.ts b/src/server/routes/mileage/daily-report-service.ts
index 7f302bf..f09efc9 100644
--- a/src/server/routes/mileage/daily-report-service.ts
+++ b/src/server/routes/mileage/daily-report-service.ts
@@ -17,7 +17,7 @@ import {
   mileageBand,
   roundMileage,
 } from './daily-report-model.js';
-import { getDailyReportSnapshot, saveDailyReportSnapshot } from './daily-report-store.js';
+import { getDailyReportSnapshot, saveDailyReportSnapshot, type DailyReportReadOptions } from './daily-report-store.js';
 
 interface AssessmentRow extends RowDataPacket {
   target_id: number;
@@ -286,8 +286,8 @@ export async function generateDailyMileageReport(
   });
 }
 
-export async function getOrGenerateDailyMileageReport(reportDate: string): Promise<DailyMileageReport> {
-  const snapshot = await getDailyReportSnapshot(reportDate);
+export async function getOrGenerateDailyMileageReport(reportDate: string, options: DailyReportReadOptions = {}): Promise<DailyMileageReport> {
+  const snapshot = await getDailyReportSnapshot(reportDate, options);
   if (snapshot) return snapshot;
   return generateDailyMileageReport(reportDate, 'PREVIEW', 'LIVE');
 }
diff --git a/src/server/routes/mileage/daily-report-store.ts b/src/server/routes/mileage/daily-report-store.ts
index ab54637..81e274f 100644
--- a/src/server/routes/mileage/daily-report-store.ts
+++ b/src/server/routes/mileage/daily-report-store.ts
@@ -9,6 +9,23 @@ import type {
 
 const TABLE = 'lingniu_prod.tab_mileage_daily_report';
 
+export type DailyReportReadOptions = { readOnly?: boolean };
+export class DailyReportStorageUnavailable extends Error {
+  constructor() { super('日报归档尚未初始化，权限预览不会创建存储，请联系管理员。'); }
+}
+
+async function readReportRows(sql: string, values: unknown[], options: DailyReportReadOptions) {
+  if (!options.readOnly) await ensureDailyReportTable();
+  try {
+    const [rows] = await pool.query<RowDataPacket[]>(sql, values);
+    return rows;
+  } catch (error) {
+    if (options.readOnly && (error as { code?: string })?.code === 'ER_NO_SUCH_TABLE')
+      throw new DailyReportStorageUnavailable();
+    throw error;
+  }
+}
+
 const CREATE_TABLE_SQL = `
 CREATE TABLE IF NOT EXISTS ${TABLE} (
   id BIGINT NOT NULL AUTO_INCREMENT,
@@ -48,11 +65,11 @@ function parsePayload(value: unknown): DailyMileageReport | null {
   }
 }
 
-export async function getDailyReportSnapshot(reportDate: string): Promise<DailyMileageReport | null> {
-  await ensureDailyReportTable();
-  const [rows] = await pool.query<RowDataPacket[]>(
+export async function getDailyReportSnapshot(reportDate: string, options: DailyReportReadOptions = {}): Promise<DailyMileageReport | null> {
+  const rows = await readReportRows(
     `SELECT report_payload FROM ${TABLE} WHERE report_date = ? LIMIT 1`,
     [reportDate],
+    options,
   );
   return parsePayload(rows[0]?.report_payload);
 }
@@ -108,10 +125,9 @@ export async function updateDailyReportSnapshotPayload(report: DailyMileageRepor
   return result.affectedRows > 0;
 }
 
-export async function listDailyReportHistory(limit = 90): Promise<MileageReportHistoryResponse> {
-  await ensureDailyReportTable();
+export async function listDailyReportHistory(limit = 90, options: DailyReportReadOptions = {}): Promise<MileageReportHistoryResponse> {
   const safeLimit = Math.min(366, Math.max(1, limit));
-  const [rows] = await pool.query<RowDataPacket[]>(
+  const rows = await readReportRows(
     `SELECT DATE_FORMAT(report_date, '%Y-%m-%d') AS report_date,
             status, source, vehicle_count, operating_count, inventory_count,
             daily_mileage, day_over_day_rate,
@@ -120,6 +136,7 @@ export async function listDailyReportHistory(limit = 90): Promise<MileageReportH
       ORDER BY report_date DESC
       LIMIT ?`,
     [safeLimit],
+    options,
   );
   const items: MileageReportHistoryItem[] = rows.map(row => ({
     reportDate: row.report_date,
diff --git a/src/server/routes/mileage/daily-report.ts b/src/server/routes/mileage/daily-report.ts
index 371898d..c2dc5f5 100644
--- a/src/server/routes/mileage/daily-report.ts
+++ b/src/server/routes/mileage/daily-report.ts
@@ -1,8 +1,9 @@
 import { Hono } from 'hono';
+import type { AuthUser } from '../../auth/types.js';
 import { getOrGenerateDailyMileageReport } from './daily-report-service.js';
-import { listDailyReportHistory } from './daily-report-store.js';
+import { DailyReportStorageUnavailable, listDailyReportHistory } from './daily-report-store.js';
 
-const app = new Hono();
+const app = new Hono<{ Variables: { user: AuthUser } }>();
 
 function isYmd(value: string): boolean {
   return /^\d{4}-\d{2}-\d{2}$/.test(value);
@@ -11,8 +12,10 @@ function isYmd(value: string): boolean {
 app.get('/history', async (c) => {
   try {
     const limit = Number(c.req.query('limit')) || 90;
-    return c.json(await listDailyReportHistory(limit));
+    return c.json(await listDailyReportHistory(limit, { readOnly: !!c.get('user')?.preview }));
   } catch (error: unknown) {
+    if (error instanceof DailyReportStorageUnavailable)
+      return c.json({ message: error.message, code: 'PREVIEW_REPORT_STORAGE_UNAVAILABLE' }, 503);
     console.error('mileage daily report history error:', error);
     return c.json({ items: [], latestDate: null }, 500);
   }
@@ -22,8 +25,10 @@ app.get('/', async (c) => {
   const date = c.req.query('date') || '';
   if (!isYmd(date)) return c.json({ message: 'date 必须为 YYYY-MM-DD' }, 400);
   try {
-    return c.json(await getOrGenerateDailyMileageReport(date));
+    return c.json(await getOrGenerateDailyMileageReport(date, { readOnly: !!c.get('user')?.preview }));
   } catch (error: unknown) {
+    if (error instanceof DailyReportStorageUnavailable)
+      return c.json({ message: error.message, code: 'PREVIEW_REPORT_STORAGE_UNAVAILABLE' }, 503);
     console.error('mileage daily report error:', error);
     return c.json({ message: error instanceof Error ? error.message : '日报生成失败' }, 500);
   }
diff --git a/src/server/routes/vehicles.ts b/src/server/routes/vehicles.ts
index fc7140e..eaa5f1a 100644
--- a/src/server/routes/vehicles.ts
+++ b/src/server/routes/vehicles.ts
@@ -37,6 +37,13 @@ import {
 } from './vehicles/utils.js';
 import { vehicleRepository, type FlowDetailRow, type WeeklyDetailType } from './vehicles/repository.js';
 
+import type { AssetAnalysisMetric, AssetAnalysisScope } from '../../shared/assets/analytics.js';
+import {
+  abnormalElapsedDays, analysisCellForVehicle, buildAssetAnalysis, loadMovementApprovalTimes,
+  matchesAnalysisFilters, matchesAnalysisFilterValues, matchesAnalysisMetric,
+  validAnalysisFilters, validAnalysisFilterValues, validAnalysisScope,
+} from './vehicles/analytics.js';
+
 export { mapRegion } from './vehicles/model.js';
 
 const app = new Hono();
@@ -354,6 +361,54 @@ app.get('/customer-stats', async (c) => {
   return c.json(result);
 });
 
+/** Analysis uses the same permission-filtered collection and exact entry scope as details. */
+app.on(['GET', 'POST'], '/analysis', async (c) => {
+  const body = c.req.method === 'POST' ? await c.req.json().catch(() => null) : {};
+  if (!body || typeof body !== 'object' || Array.isArray(body)) return c.json({ error: '统计范围无效' }, 400);
+  const scope = body.scope || {};
+  if (!validAnalysisScope(scope) || (body.inventoryKeys !== undefined && (!Array.isArray(body.inventoryKeys) || !body.inventoryKeys.every((key: unknown) => typeof key === 'string')))) {
+    return c.json({ error: '统计范围无效' }, 400);
+  }
+  let vehicles = await filterVehicleListScope(await getVehiclesForUser(c), scope);
+  if (body.inventoryKeys) vehicles = await filterVehicleListScope(vehicles, { inventoryKeys: body.inventoryKeys });
+  const approvals = await loadMovementApprovalTimes(vehicles);
+  return c.json(buildAssetAnalysis(vehicles, approvals, Date.now()));
+});
+
+app.post('/analysis/details', async (c) => {
+  const body = await c.req.json().catch(() => null);
+  const filterValues = body?.filterValues === undefined ? {} : body.filterValues;
+  const metrics: AssetAnalysisMetric[] = ['assets', 'operating', 'inventory', 'abnormal', 'pending'];
+  if (!body || !metrics.includes(body.metric) || !validAnalysisFilters(body.filters || {}) || !validAnalysisScope(body.scope || {})
+    || !validAnalysisFilterValues(filterValues)
+    || (body.inventoryKeys !== undefined && (!Array.isArray(body.inventoryKeys) || !body.inventoryKeys.every((key: unknown) => typeof key === 'string')))) {
+    return c.json({ error: '下钻条件无效' }, 400);
+  }
+  const now = body.generatedAt === undefined ? Date.now() : typeof body.generatedAt === 'string' ? Date.parse(body.generatedAt) : NaN;
+  if (!Number.isFinite(now) || now > Date.now() + 60000) return c.json({ error: '统计时间无效，请刷新分析' }, 400);
+  let vehicles = await filterVehicleListScope(await getVehiclesForUser(c), body.scope || {});
+  if (body.inventoryKeys) vehicles = await filterVehicleListScope(vehicles, { inventoryKeys: body.inventoryKeys });
+  const approvals = await loadMovementApprovalTimes(vehicles);
+  const filtered = vehicles.filter(vehicle => {
+    const cell = analysisCellForVehicle(vehicle, approvals, now);
+    return matchesAnalysisMetric(cell, body.metric)
+      && matchesAnalysisFilters(cell, body.filters || {})
+      && matchesAnalysisFilterValues(cell, filterValues);
+  });
+  return c.json(filtered.map(vehicle => {
+    const result = vehicleListItem(vehicle);
+    const approvedAt = approvals.byMoveId.get(vehicle.abnormalMove?.id || '');
+    return {
+      ...result,
+      abnormalMove: result.abnormalMove ? {
+        ...result.abnormalMove,
+        approvalPassedAt: approvedAt || null,
+        elapsedDays: abnormalElapsedDays(approvedAt, now),
+      } : null,
+    };
+  }));
+});
+
 // POST uses a JSON scope to avoid URL length limits for inventory subtotal drilldown.
 app.on(['GET', 'POST'], '/list', async (c) => {
   let inventoryKeys: Set<string> | undefined;
@@ -365,12 +420,20 @@ app.on(['GET', 'POST'], '/list', async (c) => {
     inventoryKeys = new Set(body.inventoryKeys);
   }
   const vehicles = await getVehiclesForUser(c);
-  const { brand, batch, model, location, status, category, vehicleType, manager, customer, isColdChain, isTrailer, department, attendance } = c.req.query();
+  const filtered = await filterVehicleListScope(vehicles, { ...c.req.query(), inventoryKeys: inventoryKeys ? [...inventoryKeys] : undefined });
+  return c.json(filtered.map(vehicleListItem));
+});
 
-  let filtered = c.req.query('source') === 'region'
+async function filterVehicleListScope(vehicles: Vehicle[], scope: AssetAnalysisScope): Promise<Vehicle[]> {
+  const { brand, batch, model, location, status, category, vehicleType, manager, customer, isColdChain, isTrailer, department, attendance } = scope;
+
+  let filtered = scope.source === 'region'
     ? vehicles.filter(v => isOperatingVehicle(v) || isInventoryPending(v))
     : vehicles;
 
+  const subject = (scope.subject || '').trim();
+  if (subject) filtered = filtered.filter(v => v.subjectOrg === subject);
+  const inventoryKeys = scope.inventoryKeys ? new Set(scope.inventoryKeys) : undefined;
   if (inventoryKeys) {
     filtered = filtered.filter(v => isInventoryVehicle(v) && inventoryKeys.has(inventoryKey(inventoryDimensions(v))));
   }
@@ -388,7 +451,7 @@ app.on(['GET', 'POST'], '/list', async (c) => {
     }
   }
   if (vehicleType) {
-    if (vehicleType === '区域其他' && c.req.query('source') === 'region') {
+    if (vehicleType === '区域其他' && scope.source === 'region') {
       filtered = filtered.filter(v => !['4.5T', '18T', '49T'].includes(v.type));
     } else if (VEHICLE_TYPE_FILTERS[vehicleType]) {
       filtered = filtered.filter(VEHICLE_TYPE_FILTERS[vehicleType]);
@@ -408,7 +471,7 @@ app.on(['GET', 'POST'], '/list', async (c) => {
     filtered = filtered.filter((v) => v.model === model);
   }
   if (location && location !== 'All') {
-    filtered = filterByLocation(filtered, location, c.req.query('source'));
+    filtered = filterByLocation(filtered, location, scope.source);
   }
   if (status && status !== 'All') {
     filtered = filtered.filter((v) => v.status === status);
@@ -446,8 +509,11 @@ app.on(['GET', 'POST'], '/list', async (c) => {
     filtered = filtered.filter((v) => wantTrailer ? (v.type === '挂车' || v.model.includes('挂车')) : !(v.type === '挂车' || v.model.includes('挂车')));
   }
 
-  return c.json(
-    filtered.map((v) => ({
+  return filtered;
+}
+
+function vehicleListItem(v: Vehicle) {
+  return {
       id: v.id,
       plateNumber: v.plateNumber,
       vin: v.vin,
@@ -471,9 +537,9 @@ app.on(['GET', 'POST'], '/list', async (c) => {
       customerManager: v.customerManager,
       brandLabel: v.brandLabel,
       orgName: v.orgName,
-    })),
-  );
-});
+    };
+}
+
 
 // Inventory keeps its existing aggregate visibility; vehicle details retain user permissions.
 const INVENTORY_TYPE_NAMES: Record<string, string> = { t4_5: '4.5T普货', t4_5c: '4.5T冷链', t18: '18T', t49: '49T', trailer: '挂车', other: '其他' };
diff --git a/src/server/routes/vehicles/analytics.test.ts b/src/server/routes/vehicles/analytics.test.ts
new file mode 100644
index 0000000..33f70ad
--- /dev/null
+++ b/src/server/routes/vehicles/analytics.test.ts
@@ -0,0 +1,271 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import { Hono } from 'hono';
+import type { AuthUser } from '../../auth/types.js';
+import type { Vehicle } from '../../types.js';
+import type { AssetAnalysisResponse, AssetAnalysisScope } from '../../../shared/assets/analytics.js';
+import app from '../vehicles.js';
+import { vehicleRepository } from './repository.js';
+import {
+  abnormalAgeBucket, abnormalElapsedDays, analysisCellForVehicle, buildAssetAnalysis,
+  matchesAnalysisFilters, matchesAnalysisFilterValues, matchesAnalysisMetric,
+  validAnalysisFilters, validAnalysisFilterValues, validAnalysisScope,
+  type ApprovalTimes,
+} from './analytics.js';
+
+const NOW = Date.parse('2026-09-28T12:00:00+08:00');
+const approvals: ApprovalTimes = { available: true, byMoveId: new Map() };
+const make = (id: string, overrides: Partial<Vehicle> = {}): Vehicle => ({
+  id, plateNumber: `TEST-${id}`, vin: `PRIVATE-VIN-${id}`, type: '4.5T', model: '现代4.5T普货',
+  color: '白色', location: '嘉兴', region: '嘉兴', province: '浙江省', city: '嘉兴市',
+  status: 'Operating', operationStatus: '1', ownership: 'Self', rentCompany: '',
+  contractNo: '合同甲', customerName: '测试客户公司', orgName: null, departmentName: '部门甲',
+  subjectOrg: '公司甲', projectName: null, customerManager: '负责人甲', managerId: 'manager-a',
+  brandLabel: '现代', ...overrides,
+});
+
+test('duration buckets use exact approval-time boundaries and reject missing or future dates', () => {
+  const since = (days: number) => new Date(NOW - days * 86400000).toISOString();
+  for (const [days, expected] of [[0, '0-3d'], [2.999, '0-3d'], [3, '3-7d'], [6.999, '3-7d'], [7, '7-15d'], [14.999, '7-15d'], [15, '15-30d'], [29.999, '15-30d'], [30, '30d+'], [90, '30d+']] as const) {
+    assert.equal(abnormalAgeBucket(since(days), NOW), expected);
+  }
+  for (const invalid of [undefined, '', 'not-a-date', since(-1)]) {
+    assert.equal(abnormalAgeBucket(invalid, NOW), 'unknown');
+    assert.equal(abnormalElapsedDays(invalid, NOW), null);
+  }
+  assert.equal(abnormalElapsedDays('2026-09-27T12:00:00+08:00', NOW), 1);
+  assert.equal(abnormalAgeBucket('2026-09-25T04:00:00Z', NOW), '3-7d');
+});
+
+test('asset dispositions reconcile to total while abnormal and pending stay inventory subsets', () => {
+  const data = [
+    make('leased'), make('self', { operationStatus: '2' }),
+    make('available', { operationStatus: '3', status: 'Inventory' }),
+    make('abnormal', { operationStatus: '3', status: 'Abnormal' }),
+    make('pending', { operationStatus: '4', status: 'Pending' }),
+    make('unknown', { operationStatus: null, status: 'Inventory' }),
+  ];
+  const result = buildAssetAnalysis(data, approvals, NOW);
+  assert.equal(result.summary.totalAssets, 6);
+  assert.equal(result.summary.operating.total, 2);
+  assert.equal(result.summary.operating.leased, 1);
+  assert.equal(result.summary.operating.self, 1);
+  assert.deepEqual(result.summary.inventory, { total: 3, inStock: 1, abnormal: 1 });
+  assert.equal(result.summary.pendingDelivery, 1);
+  assert.equal(result.summary.otherAssets, 1);
+  assert.equal(result.cells.reduce((sum, row) => sum + row.quantity, 0), 6);
+  const count = (metric: 'assets' | 'operating' | 'inventory' | 'abnormal' | 'pending') => result.cells.filter(cell => matchesAnalysisMetric(cell, metric)).reduce((sum, row) => sum + row.quantity, 0);
+  assert.deepEqual(['assets', 'operating', 'inventory', 'abnormal', 'pending'].map(metric => count(metric as Parameters<typeof count>[0])), [6, 2, 3, 1, 1]);
+  assert.equal(analysisCellForVehicle(data[0], approvals, NOW).assetDisposition, '租赁');
+  assert.equal(analysisCellForVehicle(data[1], approvals, NOW).assetDisposition, '自营');
+  assert.equal(analysisCellForVehicle(data[2], approvals, NOW).assetDisposition, '在库');
+  assert.equal(analysisCellForVehicle(data[5], approvals, NOW).assetDisposition, '其他');
+});
+
+test('one grouping keeps municipality, cold-chain and other-type detail filters consistent', () => {
+  const first = make('1', { province: '上海市', city: '松江区', model: '现代4.5T冷链' });
+  const second = make('2', { province: '上海市', city: '浦东新区', model: '现代4.5T冷链' });
+  const result = buildAssetAnalysis([first, second, make('3', { type: '挂车', model: '挂车' })], approvals, NOW);
+  const cold = result.cells.find(cell => cell.type === '4.5T冷链')!;
+  assert.equal(cold.quantity, 2);
+  assert.equal(cold.city, '上海市');
+  assert.equal(result.cells.find(cell => cell.type === '其他')?.quantity, 1);
+  assert.equal(matchesAnalysisFilters(cold, { region: '华东', city: '上海市', type: '4.5T冷链' }), true);
+  assert.equal(matchesAnalysisFilters(cold, { region: '华南', city: '上海市' }), false);
+});
+
+test('analysis regions and cities exactly match inventory statistics and retain unmapped locations', async (t) => {
+  const stock = (id: string, province: string | null, city: string | null) => make(id, {
+    operationStatus: '3', status: 'Inventory', province, city,
+    // This legacy field intentionally disagrees with coordinates: neither API may use it.
+    location: '广东', region: '广东',
+  });
+  const vehicles = [
+    stock('east-1', '上海市', '松江区'), stock('east-2', '上海市', '浦东新区'),
+    stock('south', '广东省', '广州市'), stock('northwest', '新疆', '乌鲁木齐市'),
+    stock('southwest', '四川省', '成都市'), stock('north', '北京市', '朝阳区'),
+    stock('central', '湖北省', '武汉市'), stock('unmapped', null, null),
+  ];
+  t.mock.method(vehicleRepository, 'getVehicles', async () => vehicles);
+  const inventoryResponse = await app.request('/inventory-stats?subject=公司甲');
+  const analysisResponse = await app.request('/analysis?subject=公司甲');
+  assert.equal(inventoryResponse.status, 200);
+  assert.equal(analysisResponse.status, 200);
+  const inventory = await inventoryResponse.json() as Array<{
+    region: string; city: string; brand: string; type: string; model: string; quantity: number;
+  }>;
+  const analysis = await analysisResponse.json() as AssetAnalysisResponse;
+  const locations = (rows: Array<{ region: string; city: string; quantity: number }>) => rows
+    .map(row => ({ region: row.region, city: row.city, quantity: row.quantity }))
+    .sort((a, b) => `${a.region}:${a.city}`.localeCompare(`${b.region}:${b.city}`));
+  assert.deepEqual(locations(analysis.cells), locations(inventory));
+  assert.equal(analysis.summary.inventory.total, vehicles.length);
+  for (const name of ['华东', '华南', '西北', '西南']) assert.ok(analysis.cells.some(cell => cell.region === name));
+  // The inventory mapper also supports these regions. Do not arbitrarily reassign or discard them.
+  assert.ok(analysis.cells.some(cell => cell.region === '华北'));
+  assert.ok(analysis.cells.some(cell => cell.region === '华中'));
+  const unknown = analysis.cells.find(cell => cell.region === '其他');
+  assert.equal(unknown?.quantity, 1);
+  assert.equal(unknown?.city, '其他');
+  for (const row of inventory) {
+    const key = JSON.stringify([row.region, row.city, row.brand, row.type, row.model]);
+    const scopedResponse = await app.request('/analysis?subject=公司甲', {
+      method: 'POST', headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ inventoryKeys: [key] }),
+    });
+    assert.equal(scopedResponse.status, 200);
+    const scoped = await scopedResponse.json() as AssetAnalysisResponse;
+    assert.equal(scoped.summary.inventory.total, row.quantity);
+    assert.ok(scoped.cells.every(cell => cell.region === row.region && cell.city === row.city));
+    const details = await app.request('/analysis/details?subject=公司甲', {
+      method: 'POST', headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({ metric: 'inventory', inventoryKeys: [key], filters: { region: row.region, city: row.city } }),
+    });
+    assert.equal(details.status, 200);
+    assert.equal((await details.json() as unknown[]).length, row.quantity);
+  }
+});
+
+test('abnormal classification never substitutes target or actual completion for approval time', () => {
+  const vehicle = make('1', {
+    operationStatus: '3', status: 'Abnormal', abnormalMove: {
+      id: 'move-1', type: '维修', work: 'PRIVATE-WORK', targetCompletionTime: '2026-09-01 12:00',
+      actualCompletionTime: '2026-09-27 12:00', initiatingDepartment: null, executingDepartment: null,
+      responsiblePerson: null, driver: null, status: '待结束',
+    },
+  });
+  assert.equal(analysisCellForVehicle(vehicle, approvals, NOW).abnormalAge, 'unknown');
+  const history = { available: true, byMoveId: new Map([['move-1', '2026-09-21T12:00:00+08:00']]) };
+  assert.equal(analysisCellForVehicle(vehicle, history, NOW).abnormalAge, '7-15d');
+  const noWorkflow = buildAssetAnalysis([vehicle], { available: false, byMoveId: new Map() }, NOW);
+  assert.equal(noWorkflow.approvalTimeAvailable, false);
+  assert.equal(noWorkflow.summary.inventory.abnormal, 1);
+});
+
+test('scope and dimensional filter validation rejects unknown keys, arrays and malformed enums', () => {
+  assert.equal(validAnalysisScope({ inventoryKeys: [], subject: null, attendance: 'idle', isColdChain: 'false' }), true);
+  assert.equal(validAnalysisFilters({ region: '华东', assetDisposition: '在库', abnormalAge: 'unknown' }), true);
+  for (const bad of [null, [], 'all', { managerId: 'other' }, { inventoryKeys: [1] }, { inventoryKeys: null }, { category: 'anything' }, { attendance: 'all' }, { isTrailer: false }, { isColdChain: 'yes' }, { subject: 4 }]) {
+    assert.equal(validAnalysisScope(bad), false, JSON.stringify(bad));
+  }
+  for (const bad of [null, [], { quantity: 10 }, { region: ['华东'] }, { unknown: 'value' }]) {
+    assert.equal(validAnalysisFilters(bad), false, JSON.stringify(bad));
+  }
+});
+
+test('multi-value filters validate known dimensions and string arrays without changing single-value filters', () => {
+  for (const valid of [{}, { region: [] }, { region: ['华东', '华南'], type: ['4.5T普货', '18T'] }]) {
+    assert.equal(validAnalysisFilterValues(valid), true);
+  }
+  for (const invalid of [undefined, null, [], 'all', { region: '华东' }, { region: [1] }, { region: ['华东', null] }, { region: [['华东']] }, { region: null }, { region: undefined }, { notADimension: [] }]) {
+    assert.equal(validAnalysisFilterValues(invalid), false, JSON.stringify(invalid));
+  }
+  assert.equal(validAnalysisFilters({ region: ['华东', '华南'] }), false);
+});
+
+test('multi-value alternatives are ORed inside a dimension and ANDed with row filters', () => {
+  const cell = analysisCellForVehicle(make('1'), approvals, NOW);
+  assert.equal(matchesAnalysisFilterValues(cell, {}), true);
+  assert.equal(matchesAnalysisFilterValues(cell, { region: [], type: [] }), true);
+  assert.equal(matchesAnalysisFilterValues(cell, { region: ['华东', '华南'], type: ['18T', '4.5T普货'] }), true);
+  assert.equal(matchesAnalysisFilterValues(cell, { region: ['华东', '华南'], type: ['18T'] }), false);
+  assert.equal(matchesAnalysisFilterValues(cell, { region: ['华南'], type: ['4.5T普货'] }), false);
+  const multiMatches = matchesAnalysisFilterValues(cell, { region: ['华东', '华南'] });
+  assert.equal(multiMatches && matchesAnalysisFilters(cell, { region: '华东' }), true);
+  assert.equal(multiMatches && matchesAnalysisFilters(cell, { region: '华南' }), false);
+});
+
+test('detail multi-select preserves permissions, company, scope and a clicked row intersection', async (t) => {
+  const vehicles = [
+    make('east-light'), make('east-heavy', { type: '18T', model: '飞驰18T' }),
+    make('south-light', { province: '广东省', city: '广州市' }),
+    make('south-heavy', { province: '广东省', city: '广州市', type: '18T', model: '飞驰18T' }),
+    make('hidden-user', { managerId: 'manager-b' }),
+    make('hidden-company', { subjectOrg: '公司乙' }),
+    make('hidden-department', { departmentName: '部门乙' }),
+    make('inventory', { operationStatus: '3', status: 'Inventory' }),
+  ];
+  t.mock.method(vehicleRepository, 'getVehicles', async () => vehicles);
+  const secured = new Hono<{ Variables: { user: AuthUser } }>();
+  secured.use('*', async (c, next) => {
+    c.set('user', { userId: 'manager-a', userName: '测试', loginName: 'test', depCode: 'a', depName: '部门甲', permissionLevel: 'personal', roles: [] });
+    await next();
+  });
+  secured.route('/', app);
+  const request = (extra: Record<string, unknown>) => secured.request('/analysis/details?subject=公司甲', {
+    method: 'POST', headers: { 'Content-Type': 'application/json' },
+    body: JSON.stringify({ metric: 'operating', scope: { department: '部门甲' }, filters: {}, ...extra }),
+  });
+  const ids = async (extra: Record<string, unknown>) => {
+    const response = await request(extra);
+    assert.equal(response.status, 200);
+    return (await response.json() as Array<{ id: string }>).map(row => row.id);
+  };
+  assert.deepEqual(await ids({ filterValues: { region: ['华东', '华南'], type: ['4.5T普货', '18T'] } }), ['east-light', 'east-heavy', 'south-light', 'south-heavy']);
+  assert.deepEqual(await ids({ filterValues: { region: ['华东', '华南'], type: ['4.5T普货'] }, filters: { region: '华东' } }), ['east-light']);
+  assert.deepEqual(await ids({ filterValues: { region: ['华南'] }, filters: { region: '华东' } }), []);
+  assert.deepEqual(await ids({ filterValues: { region: [], type: [] }, filters: { type: '18T' } }), ['east-heavy', 'south-heavy']);
+  assert.deepEqual(await ids({ filterValues: { region: ['华东', '华南'] }, scope: { subject: '公司乙' } }), []);
+  for (const invalid of [null, [], { region: '华东' }, { region: [1] }, { managerId: ['manager-b'] }]) {
+    assert.equal((await request({ filterValues: invalid })).status, 400);
+  }
+  assert.equal((await request({ filters: { region: ['华东'] } })).status, 400);
+});
+
+test('analysis and final details intersect company, permissions and exact entry scope without leaking row fields', async (t) => {
+  const vehicles = [make('visible'), make('hidden', { managerId: 'manager-b' }), make('other-company', { subjectOrg: '公司乙' })];
+  t.mock.method(vehicleRepository, 'getVehicles', async () => vehicles);
+  const secured = new Hono<{ Variables: { user: AuthUser } }>();
+  secured.use('*', async (c, next) => {
+    c.set('user', { userId: 'manager-a', userName: '测试', loginName: 'test', depCode: 'a', depName: '部门甲', permissionLevel: 'personal', roles: [] });
+    await next();
+  });
+  secured.route('/', app);
+  const post = (path: string, body: unknown) => secured.request(path, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) });
+  const response = await post('/analysis?subject=公司甲', { scope: { model: '现代4.5T普货' } });
+  assert.equal(response.status, 200);
+  const aggregate = await response.json() as AssetAnalysisResponse;
+  assert.equal(aggregate.summary.totalAssets, 1);
+  const serialized = JSON.stringify(aggregate);
+  for (const secret of ['PRIVATE-VIN', 'TEST-visible', 'manager-a', 'manager-b', '测试客户公司', 'plateNumber', 'managerId', 'contractNo']) {
+    assert.equal(serialized.includes(secret), false, `aggregate leaked ${secret}`);
+  }
+  const details = await post('/analysis/details?subject=公司甲', { metric: 'operating', filters: { region: '华东' }, generatedAt: aggregate.generatedAt, scope: { model: '现代4.5T普货' } });
+  assert.equal(details.status, 200);
+  assert.deepEqual((await details.json() as Array<{ id: string }>).map(row => row.id), ['visible']);
+  const excluded = await post('/analysis?subject=公司甲', { scope: { subject: '公司乙' } });
+  assert.equal((await excluded.json() as AssetAnalysisResponse).summary.totalAssets, 0);
+});
+
+test('analysis inherits legacy list filtering including attendance and empty inventory scopes', async (t) => {
+  const rows = [
+    make('1'), make('2', { model: '现代4.5T冷链' }),
+    make('3', { operationStatus: '3', status: 'Inventory' }),
+    make('4', { type: '挂车', model: '挂车' }),
+  ];
+  t.mock.method(vehicleRepository, 'getVehicles', async () => rows);
+  t.mock.method(vehicleRepository, 'getAttendanceMileageRows', async () => [
+    { plate_number: 'TEST-1', day_mileage: 10 }, { plate_number: 'TEST-2', day_mileage: 0 },
+  ]);
+  const scopes: AssetAnalysisScope[] = [
+    { source: 'region', location: '华东' }, { vehicleType: '4.5T冷链', category: 'Operating' },
+    { department: '部门甲', manager: '负责人甲', attendance: 'active' },
+    { isTrailer: 'true' }, { isColdChain: 'false', brand: '现代', batch: '合同甲' },
+    { subject: ' 公司甲 ' }, { inventoryKeys: [] },
+  ];
+  for (const scope of scopes) {
+    const { inventoryKeys, ...params } = scope;
+    const query = new URLSearchParams(Object.entries(params).filter((pair): pair is [string, string] => typeof pair[1] === 'string'));
+    const listResponse = await app.request(`/list?${query}`, inventoryKeys ? {
+      method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ inventoryKeys }),
+    } : undefined);
+    const analysisResponse = await app.request('/analysis', {
+      method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ scope }),
+    });
+    assert.equal(analysisResponse.status, 200);
+    assert.equal((await analysisResponse.json() as AssetAnalysisResponse).summary.totalAssets, (await listResponse.json() as unknown[]).length, JSON.stringify(scope));
+  }
+  for (const body of [{ scope: { inventoryKeys: [42] } }, { scope: { unauthorizedField: 'x' } }, { inventoryKeys: 'all' }]) {
+    assert.equal((await app.request('/analysis', { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(body) })).status, 400);
+  }
+});
diff --git a/src/server/routes/vehicles/analytics.ts b/src/server/routes/vehicles/analytics.ts
new file mode 100644
index 0000000..d5fccc2
--- /dev/null
+++ b/src/server/routes/vehicles/analytics.ts
@@ -0,0 +1,181 @@
+import pool from '../../db.js';
+import type { Vehicle } from '../../types.js';
+import {
+  ASSET_ANALYSIS_DIMENSIONS,
+  type AbnormalAgeBucket,
+  type AssetAnalysisCell,
+  type AssetAnalysisFilters,
+  type AssetAnalysisFilterValues,
+  type AssetAnalysisMetric,
+  type AssetAnalysisResponse,
+  type AssetAnalysisScope,
+} from '../../../shared/assets/analytics.js';
+import {
+  isInventoryAbnormal, isInventoryPending, isInventoryVehicle, isOperatingVehicle,
+  mapMacroRegion, resolveCity,
+} from './model.js';
+
+export interface ApprovalTimes {
+  available: boolean;
+  byMoveId: Map<string, string>;
+}
+
+/**
+ * Verified workflow source: movement = 异动审批; business_id is the movement id.
+ * Only a PASS task reaching an end node in a finished instance counts as approval.
+ * flow_his_task.update_time is documented as 审批完成时间. Movement start/create
+ * timestamps are intentionally never substituted when workflow history is absent.
+ */
+export async function loadMovementApprovalTimes(vehicles: Vehicle[]): Promise<ApprovalTimes> {
+  const ids = [...new Set(vehicles.filter(isInventoryAbnormal).flatMap(v => v.abnormalMove?.id ? [v.abnormalMove.id] : []))];
+  if (!ids.length) return { available: true, byMoveId: new Map() };
+  try {
+    const [rows] = await pool.query(`
+      SELECT f.business_id AS move_id,
+        DATE_FORMAT(MAX(h.update_time), '%Y-%m-%dT%H:%i:%s+08:00') AS approved_at
+      FROM \`ry-workflow\`.flow_instance f
+      JOIN \`ry-workflow\`.flow_definition d ON d.id = f.definition_id AND d.flow_code = 'movement'
+      JOIN \`ry-workflow\`.flow_his_task h ON h.instance_id = f.id
+        AND h.del_flag = '0' AND h.skip_type = 'PASS' AND h.flow_status IN ('pass', '2')
+      JOIN \`ry-workflow\`.flow_node n ON n.definition_id = f.definition_id
+        AND n.node_code = h.target_node_code AND n.node_type = 2 AND n.del_flag = '0'
+      WHERE f.del_flag = '0' AND f.flow_status IN ('finish', '8')
+        AND f.business_id IN (${ids.map(() => '?').join(',')})
+      GROUP BY f.business_id`, ids);
+    return {
+      available: true,
+      byMoveId: new Map((rows as Array<{ move_id: string; approved_at: string | null }> )
+        .filter(row => row.approved_at).map(row => [String(row.move_id), row.approved_at!])),
+    };
+  } catch {
+    // Workflow access is optional; totals remain usable and missing ages stay explicit.
+    return { available: false, byMoveId: new Map() };
+  }
+}
+
+export function abnormalElapsedDays(approvedAt: string | undefined, now: number): number | null {
+  const timestamp = approvedAt ? Date.parse(approvedAt) : NaN;
+  return Number.isFinite(timestamp) && timestamp <= now ? (now - timestamp) / 86400000 : null;
+}
+
+export function abnormalAgeBucket(approvedAt: string | undefined, now: number): AbnormalAgeBucket {
+  const days = abnormalElapsedDays(approvedAt, now);
+  if (days === null) return 'unknown';
+  if (days < 3) return '0-3d';
+  if (days < 7) return '3-7d';
+  if (days < 15) return '7-15d';
+  if (days < 30) return '15-30d';
+  return '30d+';
+}
+
+export function analysisCellForVehicle(vehicle: Vehicle, approvals: ApprovalTimes, now: number): AssetAnalysisCell {
+  const operating = isOperatingVehicle(vehicle);
+  const inventory = isInventoryVehicle(vehicle);
+  const abnormal = isInventoryAbnormal(vehicle);
+  const pending = isInventoryPending(vehicle);
+  const operation = (vehicle.operationStatus || '').trim();
+  const operationKind = ({ '1': '租赁', '2': '自营', '3': '可运营', '4': '待运营' } as Record<string, string>)[operation] || operation || '未分类';
+  const inventoryState = !inventory ? 'not-applicable' : abnormal ? 'abnormal' : pending ? 'pending'
+    : operationKind === '可运营' ? 'available' : operationKind === '待运营' ? 'awaiting' : 'unclassified';
+  return {
+    type: vehicle.type === '4.5T' ? (vehicle.model.includes('冷链') ? '4.5T冷链' : '4.5T普货')
+      : ['18T', '49T'].includes(vehicle.type) ? vehicle.type : '其他',
+    model: vehicle.model || '未标注型号',
+    // Match /inventory-stats inventoryDimensions exactly: the legacy vehicle.location
+    // field uses a different, older region taxonomy and must not drive BI drill-down.
+    // Keep the mapper's unknown bucket so missing locations never disappear.
+    region: mapMacroRegion(vehicle.province, vehicle.city),
+    city: resolveCity(vehicle.city, vehicle.province),
+    assetStatus: operating ? 'operating' : inventory ? 'inventory' : 'other',
+    assetDisposition: inventory ? '在库' : operating ? (operationKind === '租赁' ? '租赁' : operationKind === '自营' ? '自营' : '其他运营') : '其他',
+    operationKind,
+    inventoryState,
+    abnormalType: abnormal ? (vehicle.abnormalMove?.type || '未提供') : '不适用',
+    abnormalAge: abnormal ? abnormalAgeBucket(approvals.byMoveId.get(vehicle.abnormalMove?.id || ''), now) : 'unknown',
+    department: vehicle.model === '公务车/挂靠车' ? '公务车' : vehicle.departmentName || '未分配部门',
+    manager: vehicle.customerManager || '未分配',
+    customer: vehicle.customerName || '未分配客户',
+    quantity: 1,
+  };
+}
+
+export function matchesAnalysisMetric(cell: AssetAnalysisCell, metric: AssetAnalysisMetric): boolean {
+  if (metric === 'assets') return true;
+  if (metric === 'operating') return cell.assetStatus === 'operating';
+  if (metric === 'inventory') return cell.assetStatus === 'inventory';
+  if (metric === 'abnormal') return cell.inventoryState === 'abnormal';
+  return cell.inventoryState === 'pending';
+}
+
+export function matchesAnalysisFilters(cell: AssetAnalysisCell, filters: AssetAnalysisFilters): boolean {
+  return ASSET_ANALYSIS_DIMENSIONS.every(dimension => filters[dimension] === undefined || cell[dimension] === filters[dimension]);
+}
+
+export function matchesAnalysisFilterValues(cell: AssetAnalysisCell, filterValues: AssetAnalysisFilterValues): boolean {
+  return ASSET_ANALYSIS_DIMENSIONS.every(dimension => {
+    const values = filterValues[dimension];
+    return !values?.length || values.includes(cell[dimension]);
+  });
+}
+
+export function buildAssetAnalysis(vehicles: Vehicle[], approvals: ApprovalTimes, now: number): AssetAnalysisResponse {
+  const groups = new Map<string, AssetAnalysisCell>();
+  for (const vehicle of vehicles) {
+    const cell = analysisCellForVehicle(vehicle, approvals, now);
+    const key = JSON.stringify(ASSET_ANALYSIS_DIMENSIONS.map(dimension => cell[dimension]));
+    const existing = groups.get(key);
+    if (existing) existing.quantity += 1;
+    else groups.set(key, cell);
+  }
+  const operating = vehicles.filter(isOperatingVehicle);
+  const inventory = vehicles.filter(isInventoryVehicle);
+  return {
+    generatedAt: new Date(now).toISOString(),
+    approvalTimeAvailable: approvals.available,
+    summary: {
+      totalAssets: vehicles.length,
+      operating: {
+        total: operating.length,
+        self: operating.filter(v => ['2', '自营'].includes((v.operationStatus || '').trim())).length,
+        leased: operating.filter(v => ['1', '租赁'].includes((v.operationStatus || '').trim())).length,
+        public: operating.filter(v => v.ownership === 'Public').length,
+        hanging: 0,
+      },
+      inventory: {
+        total: inventory.length,
+        inStock: inventory.filter(v => v.status === 'Inventory').length,
+        abnormal: inventory.filter(isInventoryAbnormal).length,
+      },
+      pendingDelivery: inventory.filter(isInventoryPending).length,
+      otherAssets: vehicles.length - operating.length - inventory.length,
+    },
+    cells: [...groups.values()].sort((a, b) => b.quantity - a.quantity),
+  };
+}
+
+export function validAnalysisFilters(value: unknown): value is AssetAnalysisFilters {
+  return value !== null && typeof value === 'object' && !Array.isArray(value)
+    && Object.entries(value).every(([key, item]) => ASSET_ANALYSIS_DIMENSIONS.includes(key as typeof ASSET_ANALYSIS_DIMENSIONS[number]) && typeof item === 'string');
+}
+
+export function validAnalysisFilterValues(value: unknown): value is AssetAnalysisFilterValues {
+  return value !== null && typeof value === 'object' && !Array.isArray(value)
+    && Object.entries(value).every(([key, values]) =>
+      ASSET_ANALYSIS_DIMENSIONS.includes(key as typeof ASSET_ANALYSIS_DIMENSIONS[number])
+      && Array.isArray(values) && values.every(item => typeof item === 'string'));
+}
+
+export function validAnalysisScope(value: unknown): value is AssetAnalysisScope {
+  const keys = new Set(['brand', 'batch', 'model', 'location', 'status', 'category', 'vehicleType', 'manager', 'customer', 'department', 'attendance', 'isColdChain', 'isTrailer', 'source', 'subject']);
+  return value !== null && typeof value === 'object' && !Array.isArray(value)
+    && Object.entries(value).every(([key, item]) => {
+      if (key === 'inventoryKeys') return Array.isArray(item) && item.every(entry => typeof entry === 'string');
+      if (!keys.has(key)) return false;
+      if (key === 'subject' && item === null) return true;
+      if (typeof item !== 'string') return false;
+      if (key === 'category') return ['Inventory', 'Abnormal', 'Operating', 'Pending'].includes(item);
+      if (key === 'attendance') return ['active', 'idle'].includes(item);
+      if (key === 'isColdChain' || key === 'isTrailer') return ['true', 'false'].includes(item);
+      return true;
+    });
+}
diff --git a/src/server/routes/vehicles/repository.test.ts b/src/server/routes/vehicles/repository.test.ts
index ddd41f4..d873530 100644
--- a/src/server/routes/vehicles/repository.test.ts
+++ b/src/server/routes/vehicles/repository.test.ts
@@ -39,6 +39,7 @@ test('keeps all vehicle GET endpoints in their established order', () => {
     '/dept-stats',
     '/region-stats',
     '/customer-stats',
+    '/analysis',
     '/list',
     '/inventory-stats',
     '/weekly-detail',
diff --git a/src/shared/assets/abnormal-move.ts b/src/shared/assets/abnormal-move.ts
index f2e6552..d2224c1 100644
--- a/src/shared/assets/abnormal-move.ts
+++ b/src/shared/assets/abnormal-move.ts
@@ -1,5 +1,9 @@
 /** Current or most recent effective movement associated with a vehicle. */
 export interface AbnormalMoveDetail {
+  /** Final PASS task completion time of the movement approval workflow. */
+  approvalPassedAt?: string | null;
+  /** Elapsed days at the analysis snapshot time; null when approval time is unknown. */
+  elapsedDays?: number | null;
   id: string;
   type: string;
   work: string | null;
diff --git a/src/shared/assets/analytics.ts b/src/shared/assets/analytics.ts
new file mode 100644
index 0000000..2c5d7a0
--- /dev/null
+++ b/src/shared/assets/analytics.ts
@@ -0,0 +1,71 @@
+/** Aggregated management analysis; dimensions are shared by aggregates and final details. */
+export const ASSET_ANALYSIS_DIMENSIONS = [
+  'type', 'model', 'region', 'city', 'assetStatus', 'assetDisposition', 'operationKind',
+  'inventoryState', 'abnormalType', 'abnormalAge', 'department', 'manager', 'customer',
+] as const;
+
+export type AssetAnalysisDimension = typeof ASSET_ANALYSIS_DIMENSIONS[number];
+export type AssetAnalysisMetric = 'assets' | 'operating' | 'inventory' | 'abnormal' | 'pending';
+export type AssetAnalysisFilters = Partial<Record<AssetAnalysisDimension, string>>;
+/** Values within a dimension are ORed; dimensions and the entry scope are ANDed. */
+export type AssetAnalysisFilterValues = Partial<Record<AssetAnalysisDimension, string[]>>;
+export type AbnormalAgeBucket = '0-3d' | '3-7d' | '7-15d' | '15-30d' | '30d+' | 'unknown';
+
+export interface AssetAnalysisCell extends Record<AssetAnalysisDimension, string> {
+  assetStatus: 'operating' | 'inventory' | 'other';
+  assetDisposition: '在库' | '租赁' | '自营' | '其他运营' | '其他';
+  inventoryState: 'abnormal' | 'pending' | 'available' | 'awaiting' | 'unclassified' | 'not-applicable';
+  abnormalAge: AbnormalAgeBucket;
+  quantity: number;
+}
+
+export interface AssetAnalysisSummary {
+  totalAssets: number;
+  operating: { total: number; self: number; leased: number; public: number; hanging: number };
+  inventory: { total: number; inStock: number; abnormal: number };
+  pendingDelivery: number;
+  otherAssets: number;
+}
+
+export interface AssetAnalysisResponse {
+  generatedAt: string;
+  summary: AssetAnalysisSummary;
+  cells: AssetAnalysisCell[];
+  /** True only when a verified approval time source is available. */
+  approvalTimeAvailable: boolean;
+}
+
+export interface AssetAnalysisDetailRequest {
+  metric: AssetAnalysisMetric;
+  filters: AssetAnalysisFilters;
+  filterValues?: AssetAnalysisFilterValues;
+  /** Use the aggregate's reference time to keep duration bucket boundaries consistent. */
+  generatedAt?: string;
+  scope?: AssetAnalysisScope;
+  inventoryKeys?: string[];
+}
+
+/** Carries the existing dashboard entry's exact list scope into every drill level. */
+export interface AssetAnalysisScope {
+  inventoryKeys?: string[];
+  brand?: string;
+  batch?: string;
+  model?: string;
+  location?: string;
+  status?: string;
+  category?: string;
+  vehicleType?: string;
+  manager?: string;
+  customer?: string;
+  department?: string;
+  attendance?: string;
+  isColdChain?: string;
+  isTrailer?: string;
+  source?: string;
+  subject?: string | null;
+}
+
+export interface AssetAnalysisRequest {
+  scope?: AssetAnalysisScope;
+  inventoryKeys?: string[];
+}
diff --git a/src/shared/auth/roles.ts b/src/shared/auth/roles.ts
index 2452bb5..9fe53a7 100644
--- a/src/shared/auth/roles.ts
+++ b/src/shared/auth/roles.ts
@@ -34,3 +34,10 @@ export function canAccessEnergy(roles: readonly string[] | null | undefined): bo
   if (!roles || roles.length === 0) return false;
   return roles.some(r => ENERGY_ACCESS_ROLES.includes(r) || r === ENERGY_FULL_ACCESS);
 }
+
+/** Shared by normal login and permission preview; full access wins over department. */
+export function resolvePermissionLevel(roles: readonly string[]): 'full' | 'department' | 'personal' {
+  if (roles.some(role => FULL_ACCESS_ROLES.includes(role))) return 'full';
+  if (roles.some(role => DEPT_ACCESS_ROLES.includes(role))) return 'department';
+  return 'personal';
+}