diff --git a/vehicle-data-platform/apps/web/src/v2/pages/VehiclePage.tsx b/vehicle-data-platform/apps/web/src/v2/pages/VehiclePage.tsx
index 7ca9fa0c..f8b08134 100644
--- a/vehicle-data-platform/apps/web/src/v2/pages/VehiclePage.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/pages/VehiclePage.tsx
@@ -16,7 +16,7 @@ import { formatZhNumber, vehicleOperationStatusLabels } from '../domain/formatte
 import { protocolDisplayLabel, protocolSourceLabel } from '../domain/protocols';
 import { isValidAMapCoordinate } from '../../integrations/amap';
 import { FleetMap } from '../map/FleetMap';
-import { InlineError, PageLoading, PanelEmpty } from '../shared/AsyncState';
+import { InlineError, PageLoading, PanelEmpty, PanelLoading } from '../shared/AsyncState';
 import { MonitorReturnBar } from '../shared/MonitorReturnBar';
 import { PlatformTime } from '../shared/PlatformTime';
 import { ProtocolTag } from '../shared/ProtocolTag';
@@ -280,7 +280,7 @@ function TelemetryPanel({ data, pending, error }: { data?: LatestTelemetryRespon
     { title: '数据来源', dataIndex: 'protocol', width: 180, render: (_: unknown, item: LatestTelemetryValue) => <TelemetrySourceCell item={item} /> }
   ], []);
   const state = pending
-    ? <div className="v2-telemetry-state" role="status"><strong>正在读取最新遥测</strong><span>按协议整理最新标量证据…</span></div>
+    ? <PanelLoading className="v2-telemetry-loading" compact title="正在读取最新遥测" description="按协议整理最新标量证据。" />
     : error
       ? <div className="v2-telemetry-state is-error" role="alert"><strong>最新遥测不可用</strong><span>{error}</span></div>
       : visibleMetrics.length === 0
diff --git a/vehicle-data-platform/apps/web/src/v2/pages/VehicleSearchWorkspace.tsx b/vehicle-data-platform/apps/web/src/v2/pages/VehicleSearchWorkspace.tsx
index 73d801ef..02ba91e5 100644
--- a/vehicle-data-platform/apps/web/src/v2/pages/VehicleSearchWorkspace.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/pages/VehicleSearchWorkspace.tsx
@@ -10,7 +10,7 @@ import { canAdminister } from '../auth/session';
 import { formatZhNumber } from '../domain/formatters';
 import { useMobileLayout } from '../hooks/useMobileLayout';
 import { QUERY_MEMORY, queryScopeKey, retainPreviousPageWithinScope } from '../queryPolicy';
-import { PanelEmpty } from '../shared/AsyncState';
+import { PanelEmpty, PanelLoading } from '../shared/AsyncState';
 import { MobileFilterToggle } from '../shared/MobileFilterToggle';
 import { MobileFilterSheet, MobileFilterSheetSection } from '../shared/MobileFilterSheet';
 import { ProtocolTag } from '../shared/ProtocolTag';
@@ -328,7 +328,7 @@ export default function VehicleSearchWorkspace() {
         </div>}
       />
       {candidates.isFetching && !candidates.data
-        ? <div className="v2-vehicle-recent-state" role="status"><span className="v2-spinner" /><span>正在读取授权车辆…</span></div>
+        ? <PanelLoading className="v2-vehicle-directory-loading" compact title="正在读取授权车辆" description="车辆目录返回后会自动显示。" />
         : candidates.isError
           ? <div className="v2-vehicle-recent-state is-error" role="alert"><span>{candidates.error instanceof Error ? candidates.error.message : '授权车辆加载失败'}</span><Button size="small" theme="light" onClick={() => candidates.refetch()}>重新加载</Button></div>
           : pageVehicles.length
@@ -418,6 +418,6 @@ export default function VehicleSearchWorkspace() {
               />}
       {total > 0 ? <footer className="v2-vehicle-directory-pagination"><TablePagination page={page} totalPages={totalPages} info={`共 ${total.toLocaleString('zh-CN')} 辆 · 本页 ${pageVehicles.length.toLocaleString('zh-CN')} 辆`} disabled={candidates.isFetching} onPageChange={(next) => { setPage(next); setCandidatesOpen(false); }} /></footer> : null}
     </Card>
-    {syncOpen ? <Suspense fallback={<Card className="v2-profile-sync-panel v2-profile-sync-loading" bodyStyle={{ padding: 0 }}><span role="status"><span className="v2-spinner" />正在加载主档同步工具…</span></Card>}><VehicleProfileSyncPanel onClose={() => setSyncOpen(false)} /></Suspense> : null}
+    {syncOpen ? <Suspense fallback={<Card className="v2-profile-sync-panel v2-profile-sync-loading" bodyStyle={{ padding: 0 }}><PanelLoading compact title="正在加载主档同步工具" description="同步配置就绪后会自动显示。" /></Card>}><VehicleProfileSyncPanel onClose={() => setSyncOpen(false)} /></Suspense> : null}
   </section>;
 }
diff --git a/vehicle-data-platform/apps/web/src/v2/productionEntry.test.ts b/vehicle-data-platform/apps/web/src/v2/productionEntry.test.ts
index 95cdeaed..a67b80a9 100644
--- a/vehicle-data-platform/apps/web/src/v2/productionEntry.test.ts
+++ b/vehicle-data-platform/apps/web/src/v2/productionEntry.test.ts
@@ -110,6 +110,7 @@ describe('V2 production entry', () => {
     expect(corePageSources.VehiclePage).toContain('<SegmentedTabs');
     expect(corePageSources.VehiclePage).toContain('<Descriptions className="v2-record-descriptions"');
     expect(corePageSources.VehiclePage).toContain('<PanelEmpty');
+    expect(corePageSources.VehiclePage).toContain('<PanelLoading className="v2-telemetry-loading"');
     expect(corePageSources.VehiclePage).toContain('className="v2-vehicle-not-found-state"');
     expect(corePageSources.VehiclePage).not.toContain('<Empty image={<IconSearch');
     expect(corePageSources.VehiclePage).not.toContain('<dl className="v2-record-list"');
@@ -135,7 +136,9 @@ describe('V2 production entry', () => {
     expect(corePageSources.VehiclePage).not.toContain('<input');
     expect(corePageSources.VehiclePage).not.toContain('<button');
     expect(vehicleSearchSource).toContain("lazy(() => import('./VehicleProfileSyncPanel'))");
+    expect(vehicleSearchSource).toContain('<PanelLoading className="v2-vehicle-directory-loading"');
     expect(vehicleSearchSource).toContain('<Card className="v2-profile-sync-panel v2-profile-sync-loading"');
+    expect(vehicleSearchSource).toContain('<PanelLoading compact title="正在加载主档同步工具"');
     expect(profileSyncPanelSource).toContain('<Upload');
     expect(profileSyncPanelSource).toContain('<Card className="v2-profile-sync-panel"');
     expect(profileSyncPanelSource).not.toContain('<input');
@@ -159,13 +162,15 @@ describe('V2 production entry', () => {
     expect(corePageSources.MonitorPage).toContain('<PanelLoading className="v2-monitor-table-loading"');
     expect(corePageSources.MonitorPage).toContain('title="正在加载车辆详情"');
     expect(corePageSources.MonitorPage).not.toContain('<table><thead><tr><th>车辆</th>');
-    expect(sourceEvidenceSource).toContain("import { Button, Card, Input, Spin, Tag } from '@douyinfe/semi-ui'");
+    expect(sourceEvidenceSource).toContain("import { Button, Card, Input, Tag } from '@douyinfe/semi-ui'");
     expect(sourceEvidenceSource).toContain('<Card className={`v2-source-evidence');
     expect(sourceEvidenceSource).toContain('<Card className={`v2-source-evidence-card');
     expect(sourceEvidenceSource).toContain('<WorkspaceDetailSideSheet');
     expect(sourceEvidenceSource).toContain('className="v2-source-evidence-sidesheet"');
     expect(sourceEvidenceSource).toContain('<Tag className="is-recommended"');
-    expect(sourceEvidenceSource).toContain('<Spin size="small"');
+    expect(sourceEvidenceSource).toContain('<PanelLoading className="v2-source-evidence-loading"');
+    expect(sourceEvidenceSource).not.toContain('<Spin');
+    expect(sourceEvidenceSource).toContain("placement={mobileLayout ? 'bottom' : 'right'}");
     expect(sourceEvidenceSource).toContain('<PanelEmpty className="v2-source-evidence-empty"');
     expect(sourceEvidenceSource).not.toContain('<article className={`v2-source-evidence-card');
     expect(sourceEvidenceSource).not.toContain('<section className={`v2-source-evidence');
diff --git a/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.test.tsx b/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.test.tsx
index f8a3b22e..d12c8886 100644
--- a/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.test.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.test.tsx
@@ -46,7 +46,7 @@ afterEach(() => {
   vi.mocked(useMobileLayout).mockReturnValue(false);
 });
 
-test('loads all source evidence only after the user expands it', async () => {
+test('loads all source evidence in a Semi right SideSheet without reflowing the desktop record', async () => {
   const sourceEvidence = vi.spyOn(api, 'vehicleSourceEvidence').mockResolvedValue(evidence);
   const client = new QueryClient({ defaultOptions: { queries: { retry: false } } });
 
@@ -57,10 +57,16 @@ test('loads all source evidence only after the user expands it', async () => {
   fireEvent.click(screen.getByRole('button', { name: '查看全部来源' }));
   await waitFor(() => expect(sourceEvidence).toHaveBeenCalledTimes(1));
   expect(await screen.findByText('北斗平台')).toBeInTheDocument();
-  expect(view.container.querySelectorAll('.v2-source-evidence-card.semi-card')).toHaveLength(3);
+  expect(view.container.querySelector('.v2-source-evidence > .semi-card-body > .v2-source-evidence-body')).not.toBeInTheDocument();
+  expect(document.querySelector('.v2-source-evidence-sidesheet')).toHaveClass('v2-workspace-detail-sidesheet');
+  expect(document.querySelector('.v2-source-evidence-sidesheet .semi-sidesheet-inner')).toHaveStyle({ width: 'min(680px, calc(100vw - 24px))' });
+  expect(document.querySelectorAll('.v2-source-evidence-sidesheet .v2-source-evidence-card.semi-card')).toHaveLength(3);
   expect(screen.getAllByText('当前推荐').every((item) => item.closest('.semi-tag'))).toBe(true);
   expect(screen.getAllByText('当前推荐').length).toBeGreaterThan(0);
   expect(screen.queryByText('13307795425')).not.toBeInTheDocument();
+
+  fireEvent.click(screen.getByRole('button', { name: '关闭来源证据' }));
+  await waitFor(() => expect(view.container.querySelector('.v2-source-evidence')).not.toHaveClass('is-open'));
   client.clear();
 });
 
diff --git a/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.tsx b/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.tsx
index e2fce3df..6e5b8954 100644
--- a/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/shared/VehicleSourceEvidencePanel.tsx
@@ -1,13 +1,13 @@
 import { useQuery } from '@tanstack/react-query';
 import { IconSearch } from '@douyinfe/semi-icons';
-import { Button, Card, Input, Spin, Tag } from '@douyinfe/semi-ui';
+import { Button, Card, Input, Tag } from '@douyinfe/semi-ui';
 import { useMemo, useState } from 'react';
 import { api } from '../../api/client';
 import type { VehicleLocationSourceEvidence, VehicleMileageSourceEvidence } from '../../api/types';
 import { protocolDisplayLabel, protocolSourceLabel } from '../domain/protocols';
 import { useMobileLayout } from '../hooks/useMobileLayout';
 import { QUERY_MEMORY } from '../queryPolicy';
-import { PanelEmpty } from './AsyncState';
+import { PanelEmpty, PanelLoading } from './AsyncState';
 import { WorkspaceDetailSideSheet } from './WorkspaceDetailSideSheet';
 
 function today() {
@@ -117,7 +117,7 @@ export function VehicleSourceEvidencePanel({
         <label><span>里程日期</span><Input aria-label="里程日期" type="date" value={date} max={today()} onChange={setDate} /></label>
         <small>终端已脱敏；推荐结果来自后台选举，不改动原始证据。</small>
       </div>
-      {query.isPending ? <div className="v2-source-evidence-state" role="status"><Spin size="small" />正在读取全部来源证据…</div> : null}
+      {query.isPending ? <PanelLoading className="v2-source-evidence-loading" compact title="正在读取全部来源证据" description="位置、里程与质量选举结果返回后会自动更新。" /> : null}
       {query.isError ? <div className="v2-source-evidence-state is-error"><span>{query.error instanceof Error ? query.error.message : '来源证据读取失败'}</span><Button theme="borderless" type="danger" size="small" onClick={() => void query.refetch()}>重试</Button></div> : null}
       {query.data ? <>
         <div className="v2-source-evidence-summary">
@@ -138,13 +138,13 @@ export function VehicleSourceEvidencePanel({
         <div><strong>位置与里程来源</strong><span>{description}</span></div>
         <Button theme="light" aria-expanded={expanded} onClick={() => setExpanded(!expanded)}>{expanded ? '收起来源' : '查看全部来源'}</Button>
       </header>
-      {expanded && !mobileLayout ? evidenceBody : null}
     </Card>
-    {mobileLayout ? <WorkspaceDetailSideSheet
+    <WorkspaceDetailSideSheet
       className="v2-source-evidence-sidesheet"
       visible={expanded}
-      placement="bottom"
-      height="min(88dvh, 780px)"
+      placement={mobileLayout ? 'bottom' : 'right'}
+      width={mobileLayout ? undefined : 'min(680px, calc(100vw - 24px))'}
+      height={mobileLayout ? 'min(88dvh, 780px)' : undefined}
       ariaLabel="位置与里程来源证据"
       closeLabel="关闭来源证据"
       title="位置与里程来源"
@@ -154,6 +154,6 @@ export function VehicleSourceEvidencePanel({
       onCancel={() => setExpanded(false)}
     >
       <div className="v2-source-evidence-sheet-body">{evidenceBody}</div>
-    </WorkspaceDetailSideSheet> : null}
+    </WorkspaceDetailSideSheet>
   </>;
 }
diff --git a/vehicle-data-platform/apps/web/src/v2/styles/workspace.css b/vehicle-data-platform/apps/web/src/v2/styles/workspace.css
index 8b658e38..8e585c06 100644
--- a/vehicle-data-platform/apps/web/src/v2/styles/workspace.css
+++ b/vehicle-data-platform/apps/web/src/v2/styles/workspace.css
@@ -18338,6 +18338,58 @@
   flex: none;
 }
 
+@media (min-width: 681px) {
+  .v2-source-evidence-sidesheet .semi-sidesheet-inner {
+    border-radius: 16px 0 0 16px;
+    box-shadow: -18px 0 48px rgba(25, 45, 72, .18);
+  }
+
+  .v2-source-evidence-sidesheet .semi-sidesheet-header {
+    min-height: 76px;
+    padding: 13px 18px;
+  }
+
+  .v2-source-evidence-sidesheet .v2-source-evidence-sheet-body > .v2-source-evidence-body {
+    padding: 14px 14px 28px;
+  }
+
+  .v2-source-evidence-sidesheet .v2-source-evidence-toolbar {
+    margin: -14px -14px 14px;
+    padding: 12px 16px;
+  }
+
+  .v2-source-evidence-sidesheet .v2-source-evidence-group > div {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: 10px;
+  }
+}
+
+.v2-source-evidence-sidesheet .v2-source-evidence-loading.v2-state-surface {
+  min-height: 190px;
+  margin-top: 10px;
+  border-color: #d9e3ee;
+  background: #fff;
+}
+
+.v2-vehicle-directory-v3 .v2-vehicle-directory-loading.v2-state-surface {
+  min-height: 220px;
+  flex: 1 1 auto;
+  margin: 10px;
+}
+
+.v2-vehicle-record-v3 .v2-telemetry-loading.v2-state-surface {
+  min-height: 190px;
+  margin: 10px;
+  border-color: #dce5ef;
+  background: #fbfdff;
+}
+
+.v2-profile-sync-loading .v2-state-surface {
+  min-height: 180px;
+  border: 0;
+  box-shadow: none;
+}
+
 .v2-vehicle-record-v3.v2-vehicle-record-page {
   display: flex;
   width: 100%;