diff --git a/docs/bi-refactor-roadmap.md b/docs/bi-refactor-roadmap.md
index 7827e06..3ecd1f3 100644
--- a/docs/bi-refactor-roadmap.md
+++ b/docs/bi-refactor-roadmap.md
@@ -153,6 +153,7 @@ SUM(fee) / NULLIF(SUM(kwh), 0)
 - 已统一共享加载、空数据和故障组件的顶层卡片与明细内联边界，消除能源明细中的嵌套状态卡片。
 - 已统一电能、氢能和 ETC 日期范围输入；电能与氢能共用快捷区间算法和单一输入事件路径。
 - 电能与氢能可根据 URL 日期恢复快捷区间选中态；过期区间自动归为自定义，避免标签与统计日期不一致。
+- 已统一电能和氢能车辆范围 segmented control，并区分前端车辆归属状态与后端 `customer` 查询参数语义。
 - 已完成并发同参 GET 去重。
 
 ### 阶段 B：核心下钻闭环
diff --git a/src/modules/energy/AnalysisScopeSwitch.tsx b/src/modules/energy/AnalysisScopeSwitch.tsx
new file mode 100644
index 0000000..62752d0
--- /dev/null
+++ b/src/modules/energy/AnalysisScopeSwitch.tsx
@@ -0,0 +1,50 @@
+import type { ComponentType } from 'react';
+import { cn } from '../../lib/cn';
+
+export interface AnalysisScopeOption<T extends string> {
+  id: T;
+  label: string;
+}
+
+export default function AnalysisScopeSwitch<T extends string>({
+  ariaLabel,
+  value,
+  options,
+  onChange,
+  icon: Icon,
+  className,
+}: {
+  ariaLabel: string;
+  value: T;
+  options: readonly AnalysisScopeOption<T>[];
+  onChange: (value: T) => void;
+  icon?: ComponentType<{ size?: number; className?: string }>;
+  className?: string;
+}) {
+  return (
+    <div
+      role="group"
+      aria-label={ariaLabel}
+      className={cn('grid gap-1 rounded-lg bg-slate-100 p-1', className)}
+      style={{ gridTemplateColumns: `repeat(${options.length}, minmax(0, 1fr))` }}
+    >
+      {options.map(option => (
+        <button
+          key={option.id}
+          type="button"
+          onClick={() => onChange(option.id)}
+          aria-pressed={value === option.id}
+          className={cn(
+            'flex min-h-9 min-w-0 items-center justify-center gap-1.5 rounded-lg px-2 text-[12px] font-black transition-colors',
+            value === option.id
+              ? 'bg-white text-slate-900 shadow-sm'
+              : 'text-slate-500 hover:text-slate-700',
+          )}
+        >
+          {Icon ? <Icon size={14} className="shrink-0" /> : null}
+          <span className="min-w-0 truncate">{option.label}</span>
+        </button>
+      ))}
+    </div>
+  );
+}
diff --git a/src/modules/energy/ElectricDaily.tsx b/src/modules/energy/ElectricDaily.tsx
index 248c1e4..b3447d9 100644
--- a/src/modules/energy/ElectricDaily.tsx
+++ b/src/modules/energy/ElectricDaily.tsx
@@ -12,6 +12,7 @@ import {
   type ElectricDrillContext,
 } from './electric-drill-context';
 import AnalysisDateFilters from './AnalysisDateFilters';
+import AnalysisScopeSwitch, { type AnalysisScopeOption } from './AnalysisScopeSwitch';
 import {
   dateRangeModeLabel,
   getQuickDateRange,
@@ -20,11 +21,17 @@ import {
   type DateRangeMode,
 } from './date-range';
 
+const VEHICLE_SCOPE_OPTIONS: readonly AnalysisScopeOption<ElectricVehicleScope>[] = [
+  { id: 'all', label: '全部车辆' },
+  { id: 'lingniu', label: '羚牛车辆' },
+  { id: 'external', label: '外部车辆' },
+];
+
 export default function ElectricDaily() {
   const [drillContext, setDrillContext] = useState<ElectricDrillContext>(() => (
     parseElectricDrillContext(window.location.search)
   ));
-  const [customer, setCustomer] = useState<ElectricVehicleScope>(drillContext.vehicleScope);
+  const [vehicleScope, setVehicleScope] = useState<ElectricVehicleScope>(drillContext.vehicleScope);
   const [pick, setPick] = useState<DateRangeMode>(() => {
     if (drillContext.startDate && drillContext.endDate) {
       return inferDateRangeMode(drillContext.startDate, drillContext.endDate);
@@ -63,7 +70,7 @@ export default function ElectricDaily() {
     const query = pick === 'custom'
       ? { startDate: effectiveRange.start, endDate: effectiveRange.end }
       : { range: pick };
-    fetchElectricMonthly(customer, query)
+    fetchElectricMonthly(vehicleScope, query)
       .then(m => {
         if (cancelled) return;
         setMonths(m);
@@ -73,7 +80,7 @@ export default function ElectricDaily() {
       })
       .catch(e => { if (!cancelled) setError(e instanceof Error ? e.message : String(e)); });
     return () => { cancelled = true; };
-  }, [customer, pick, effectiveRange.start, effectiveRange.end]);
+  }, [vehicleScope, pick, effectiveRange.start, effectiveRange.end]);
 
   useEffect(() => {
     if (!selectedDate) {
@@ -84,11 +91,11 @@ export default function ElectricDaily() {
     let cancelled = false;
     setOrders(null);
     setOrdersError(null);
-    fetchElectricOrders(selectedDate, customer)
+    fetchElectricOrders(selectedDate, vehicleScope)
       .then(result => { if (!cancelled) setOrders(result); })
       .catch(e => { if (!cancelled) setOrdersError(e instanceof Error ? e.message : String(e)); });
     return () => { cancelled = true; };
-  }, [selectedDate, customer]);
+  }, [selectedDate, vehicleScope]);
 
   const toggleMonth = (m: string) => setOpenMonths(prev => {
     const next = new Set(prev);
@@ -104,14 +111,14 @@ export default function ElectricDaily() {
   const avgPrice = totalKwh > 0 ? totalFee / totalKwh : 0;
   const scopeLabel = dateRangeModeLabel(pick);
   const rangeText = `${effectiveRange.start} 至 ${effectiveRange.end}`;
-  const showExternalEmpty = customer === 'external' && months !== null && totalKwh === 0;
+  const showExternalEmpty = vehicleScope === 'external' && months !== null && totalKwh === 0;
 
   const applyQuickPick = (nextPick: DateQuickPick) => {
     const nextRange = getQuickDateRange(nextPick);
     setPick(nextPick);
     setDateRange(nextRange);
     commitDrillContext({
-      vehicleScope: customer,
+      vehicleScope,
       startDate: nextRange.start,
       endDate: nextRange.end,
     });
@@ -124,14 +131,14 @@ export default function ElectricDaily() {
     setPick('custom');
     setDateRange(normalized);
     commitDrillContext({
-      vehicleScope: customer,
+      vehicleScope,
       startDate: normalized.start,
       endDate: normalized.end,
     });
   };
 
-  const updateCustomer = (next: ElectricVehicleScope) => {
-    setCustomer(next);
+  const updateVehicleScope = (next: ElectricVehicleScope) => {
+    setVehicleScope(next);
     commitDrillContext({
       ...drillContext,
       vehicleScope: next,
@@ -143,7 +150,7 @@ export default function ElectricDaily() {
   const toggleDate = (date: string) => {
     commitDrillContext({
       ...drillContext,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
       selectedDate: selectedDate === date ? undefined : date,
@@ -154,7 +161,7 @@ export default function ElectricDaily() {
     const handlePopState = () => {
       const next = parseElectricDrillContext(window.location.search);
       setDrillContext(next);
-      setCustomer(next.vehicleScope);
+      setVehicleScope(next.vehicleScope);
       if (next.startDate && next.endDate) {
         const normalized = normalizeDateRange(next.startDate, next.endDate);
         setPick(inferDateRangeMode(normalized.start, normalized.end));
@@ -181,21 +188,14 @@ export default function ElectricDaily() {
           onDateChange={updateDateRange}
         />
 
-        <div className="mt-2 grid grid-cols-3 gap-1 rounded-xl bg-slate-100 p-1">
-          {(['all', 'lingniu', 'external'] as const).map(c => (
-            <button
-              key={c}
-              onClick={() => updateCustomer(c)}
-              aria-pressed={customer === c}
-              className={`flex min-h-9 items-center justify-center gap-1.5 rounded-lg text-[12px] font-black transition-all ${
-                customer === c ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'
-              }`}
-            >
-              <Truck size={14} />
-              {c === 'all' ? '全部车辆' : c === 'external' ? '外部车辆' : '羚牛车辆'}
-            </button>
-          ))}
-        </div>
+        <AnalysisScopeSwitch
+          ariaLabel="电能车辆范围"
+          value={vehicleScope}
+          options={VEHICLE_SCOPE_OPTIONS}
+          onChange={updateVehicleScope}
+          icon={Truck}
+          className="mt-2"
+        />
       </SurfaceCard>
 
       <div className="grid grid-cols-2 gap-3 md:grid-cols-4">
diff --git a/src/modules/energy/HydrogenDaily.tsx b/src/modules/energy/HydrogenDaily.tsx
index 329c19b..41ffd78 100644
--- a/src/modules/energy/HydrogenDaily.tsx
+++ b/src/modules/energy/HydrogenDaily.tsx
@@ -14,6 +14,7 @@ import {
 } from './hydrogen-drill-context';
 import HydrogenOrders from './HydrogenOrders';
 import AnalysisDateFilters from './AnalysisDateFilters';
+import AnalysisScopeSwitch, { type AnalysisScopeOption } from './AnalysisScopeSwitch';
 import {
   dateRangeModeLabel,
   getQuickDateRange,
@@ -22,6 +23,11 @@ import {
   type DateRangeMode,
 } from './date-range';
 
+const VEHICLE_SCOPE_OPTIONS: readonly AnalysisScopeOption<CustomerType>[] = [
+  { id: 'lingniu', label: '羚牛车辆' },
+  { id: 'external', label: '外部车辆' },
+];
+
 export default function HydrogenDaily() {
   const [drillContext, setDrillContext] = useState<HydrogenDrillContext>(() => (
     parseHydrogenDrillContext(window.location.search)
@@ -36,7 +42,7 @@ export default function HydrogenDaily() {
       ? normalizeDateRange(drillContext.startDate, drillContext.endDate)
       : getQuickDateRange('last15')
   ));
-  const [customer, setCustomer] = useState<CustomerType>(drillContext.vehicleScope);
+  const [vehicleScope, setVehicleScope] = useState<CustomerType>(drillContext.vehicleScope);
   const [expanded, setExpanded] = useState<Set<string>>(new Set());
   const [rows, setRows] = useState<HydrogenDailyRow[] | null>(null);
   const [error, setError] = useState<string | null>(null);
@@ -64,11 +70,11 @@ export default function HydrogenDaily() {
     const query = pick === 'custom'
       ? { startDate: effectiveRange.start, endDate: effectiveRange.end, stationId: selectedStationId, customerName: selectedCustomerName }
       : { range: pick, stationId: selectedStationId, customerName: selectedCustomerName };
-    fetchHydrogenDaily(query, customer)
+    fetchHydrogenDaily(query, vehicleScope)
       .then(r => { if (!cancelled) setRows(r); })
       .catch(e => { if (!cancelled) setError(e instanceof Error ? e.message : String(e)); });
     return () => { cancelled = true; };
-  }, [pick, customer, effectiveRange.start, effectiveRange.end, selectedStationId, selectedCustomerName, retryKey]);
+  }, [pick, vehicleScope, effectiveRange.start, effectiveRange.end, selectedStationId, selectedCustomerName, retryKey]);
 
   // 柱图：按日期升序，用于"从左到右时间流"
   const trendData = useMemo(() => (rows ? [...rows].sort((a, b) => a.date.localeCompare(b.date)) : []), [rows]);
@@ -100,7 +106,7 @@ export default function HydrogenDaily() {
     setDateRange(nextRange);
     commitDrillContext({
       ...drillContext,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: nextRange.start,
       endDate: nextRange.end,
       selectedDate: undefined,
@@ -115,15 +121,15 @@ export default function HydrogenDaily() {
     setDateRange(normalized);
     commitDrillContext({
       ...drillContext,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: normalized.start,
       endDate: normalized.end,
       selectedDate: undefined,
     }, 'replace');
   };
 
-  const updateCustomer = (next: CustomerType) => {
-    setCustomer(next);
+  const updateVehicleScope = (next: CustomerType) => {
+    setVehicleScope(next);
     commitDrillContext({
       ...drillContext,
       vehicleScope: next,
@@ -136,7 +142,7 @@ export default function HydrogenDaily() {
     commitDrillContext({
       level: 'overview',
       year: drillContext.year,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
     }, 'replace');
@@ -145,7 +151,7 @@ export default function HydrogenDaily() {
   const openOrders = (date: string) => {
     commitDrillContext({
       ...drillContext,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
       selectedDate: date,
@@ -155,7 +161,7 @@ export default function HydrogenDaily() {
   const closeOrders = () => {
     commitDrillContext({
       ...drillContext,
-      vehicleScope: customer,
+      vehicleScope,
       startDate: effectiveRange.start,
       endDate: effectiveRange.end,
       selectedDate: undefined,
@@ -172,7 +178,7 @@ export default function HydrogenDaily() {
     const handlePopState = () => {
       const next = parseHydrogenDrillContext(window.location.search);
       setDrillContext(next);
-      setCustomer(next.vehicleScope);
+      setVehicleScope(next.vehicleScope);
       if (next.startDate && next.endDate) {
         const normalized = normalizeDateRange(next.startDate, next.endDate);
         setPick(inferDateRangeMode(normalized.start, normalized.end));
@@ -196,21 +202,14 @@ export default function HydrogenDaily() {
           onDateChange={updateDateRange}
         />
 
-        <div className="mt-2 grid grid-cols-2 gap-1 rounded-xl bg-slate-100 p-1">
-          {(['lingniu', 'external'] as const).map(c => (
-            <button
-              key={c}
-              onClick={() => updateCustomer(c)}
-              aria-pressed={customer === c}
-              className={`flex min-h-9 items-center justify-center gap-1.5 rounded-lg text-[12px] font-black transition-all ${
-                customer === c ? 'bg-white text-slate-900 shadow-sm' : 'text-slate-500 hover:text-slate-700'
-              }`}
-            >
-              <Truck size={14} />
-              {c === 'external' ? '外部车辆' : '羚牛车辆'}
-            </button>
-          ))}
-        </div>
+        <AnalysisScopeSwitch
+          ariaLabel="氢能车辆范围"
+          value={vehicleScope}
+          options={VEHICLE_SCOPE_OPTIONS}
+          onChange={updateVehicleScope}
+          icon={Truck}
+          className="mt-2"
+        />
       </SurfaceCard>
 
       {selectedStationName && (
@@ -261,13 +260,13 @@ export default function HydrogenDaily() {
 
       {!error && rows !== null && <div className="grid grid-cols-2 gap-3 md:grid-cols-4">
         <MetricTile icon={Fuel} label={`${scopeLabel}加氢量`} value={totalKg.toLocaleString('zh-CN', { maximumFractionDigits: 1 })} unit="Kg" helper={rangeText} />
-        <MetricTile icon={Truck} label="车辆归属" value={customer === 'external' ? '外部' : '羚牛'} helper="当前筛选口径" tone="emerald" />
+        <MetricTile icon={Truck} label="车辆归属" value={vehicleScope === 'external' ? '外部' : '羚牛'} helper="当前筛选口径" tone="emerald" />
         <MetricTile icon={TrendingUp} label="有效天数" value={`${activeDays}/${rows?.length ?? 0}`} helper={`日均 ${avgKg.toLocaleString('zh-CN', { maximumFractionDigits: 1 })} Kg`} tone="amber" />
         <MetricTile icon={Plug} label="涉及加氢站" value={stationCount} unit="站" helper="按明细站点去重" tone="slate" />
       </div>}
 
       {/* 外部车辆：新系统数据还没准备好 */}
-      {!error && customer === 'external' && rows !== null && totalKg === 0 && (
+      {!error && vehicleScope === 'external' && rows !== null && totalKg === 0 && (
         <motion.div
           initial={{ opacity: 0, y: 8 }}
           animate={{ opacity: 1, y: 0 }}
@@ -288,7 +287,7 @@ export default function HydrogenDaily() {
       )}
 
       {/* 时段加氢量柱图（外部车辆无数据时不渲染） */}
-      {!error && !(customer === 'external' && totalKg === 0) && trendData.length > 0 && (
+      {!error && !(vehicleScope === 'external' && totalKg === 0) && trendData.length > 0 && (
         <SurfaceCard>
           <div className="flex items-center justify-between px-4 pt-4 mb-2">
             <span className="text-sm font-bold text-slate-700">每日加氢量</span>
@@ -375,7 +374,7 @@ export default function HydrogenDaily() {
       {selectedDate && (
         <HydrogenOrders
           date={selectedDate}
-          customer={customer}
+          vehicleScope={vehicleScope}
           stationId={selectedStationId}
           customerName={selectedCustomerName}
           onClose={closeOrders}
@@ -383,7 +382,7 @@ export default function HydrogenDaily() {
       )}
 
       {/* 表格（外部车辆 + 全 0 时不渲染，由上方友好空状态替代） */}
-      {!error && !(customer === 'external' && rows !== null && totalKg === 0) && (
+      {!error && !(vehicleScope === 'external' && rows !== null && totalKg === 0) && (
       <div className="bg-white rounded-2xl border border-slate-100 shadow-sm overflow-hidden">
         {/* 表头 */}
         <div className="grid grid-cols-[minmax(0,1fr)_72px_64px] md:grid-cols-[minmax(0,1fr)_140px_120px_104px] gap-2 md:gap-3 px-3 py-2 bg-slate-50 text-[11px] font-bold text-slate-500">
diff --git a/src/modules/energy/HydrogenOrders.tsx b/src/modules/energy/HydrogenOrders.tsx
index ad4f480..c0f2ab3 100644
--- a/src/modules/energy/HydrogenOrders.tsx
+++ b/src/modules/energy/HydrogenOrders.tsx
@@ -11,13 +11,13 @@ function fmtMoney(value: number): string {
 
 export default function HydrogenOrders({
   date,
-  customer,
+  vehicleScope,
   stationId,
   customerName,
   onClose,
 }: {
   date: string;
-  customer: CustomerType;
+  vehicleScope: CustomerType;
   stationId?: number;
   customerName?: string;
   onClose: () => void;
@@ -30,28 +30,28 @@ export default function HydrogenOrders({
 
   useEffect(() => {
     setPage(1);
-  }, [customer, customerName, date, stationId]);
+  }, [vehicleScope, customerName, date, stationId]);
 
   useEffect(() => {
     let cancelled = false;
     setLoading(true);
     setError(null);
     setData(null);
-    fetchHydrogenOrders({ date, customer, stationId, customerName, page, limit: 20 })
+    fetchHydrogenOrders({ date, customer: vehicleScope, stationId, customerName, page, limit: 20 })
       .then(result => { if (!cancelled) setData(result); })
       .catch(loadError => {
         if (!cancelled) setError(loadError instanceof Error ? loadError.message : String(loadError));
       })
       .finally(() => { if (!cancelled) setLoading(false); });
     return () => { cancelled = true; };
-  }, [customer, customerName, date, page, retryKey, stationId]);
+  }, [vehicleScope, customerName, date, page, retryKey, stationId]);
 
   const totalPages = data?.totalPages ?? 1;
   const scope = customerName
     ? `客户：${customerName}`
     : stationId !== undefined
       ? `站点 #${stationId}`
-      : customer === 'external' ? '外部车辆' : '羚牛车辆';
+      : vehicleScope === 'external' ? '外部车辆' : '羚牛车辆';
 
   return (
     <section className="overflow-hidden rounded-lg border border-blue-100 bg-white shadow-sm">
diff --git a/src/modules/energy/api.ts b/src/modules/energy/api.ts
index d09374b..c22b853 100644
--- a/src/modules/energy/api.ts
+++ b/src/modules/energy/api.ts
@@ -39,8 +39,8 @@ export interface HydrogenDailyQuery {
   customerName?: string;
 }
 
-export function fetchHydrogenDaily(query: HydrogenDailyQuery, customer: CustomerType): Promise<HydrogenDailyRow[]> {
-  const q = new URLSearchParams({ customer });
+export function fetchHydrogenDaily(query: HydrogenDailyQuery, vehicleScope: CustomerType): Promise<HydrogenDailyRow[]> {
+  const q = new URLSearchParams({ customer: vehicleScope });
   if (query.range) q.set('range', query.range);
   if (query.startDate) q.set('startDate', query.startDate);
   if (query.endDate) q.set('endDate', query.endDate);
@@ -80,16 +80,16 @@ export function fetchElectricOverview(): Promise<ElectricOverviewResponse> {
   return fetchJson<ElectricOverviewResponse>(`${BASE}/electric/overview`);
 }
 
-export function fetchElectricMonthly(customer: ElectricVehicleScope, query: HydrogenDailyQuery = { range: 'last15' }): Promise<ElectricMonthGroup[]> {
-  const q = new URLSearchParams({ customer });
+export function fetchElectricMonthly(vehicleScope: ElectricVehicleScope, query: HydrogenDailyQuery = { range: 'last15' }): Promise<ElectricMonthGroup[]> {
+  const q = new URLSearchParams({ customer: vehicleScope });
   if (query.range) q.set('range', query.range);
   if (query.startDate) q.set('startDate', query.startDate);
   if (query.endDate) q.set('endDate', query.endDate);
   return fetchJson<ElectricMonthGroup[]>(`${BASE}/electric/monthly?${q.toString()}`);
 }
 
-export function fetchElectricOrders(date: string, customer: ElectricVehicleScope): Promise<ElectricChargeOrderResponse> {
-  const q = new URLSearchParams({ date, customer });
+export function fetchElectricOrders(date: string, vehicleScope: ElectricVehicleScope): Promise<ElectricChargeOrderResponse> {
+  const q = new URLSearchParams({ date, customer: vehicleScope });
   return fetchJson<ElectricChargeOrderResponse>(`${BASE}/electric/orders?${q.toString()}`);
 }