feat(web): refine mileage summary hierarchy

vehicle-data-platform/apps/web/src/v2/pages/StatisticsPage.test.tsx

@@ -77,11 +77,11 @@ test('renders only the desktop matrix with dates as columns and a period total',
   expect(view.container.querySelector('.v2-mileage-page > .v2-page-heading')).not.toBeInTheDocument();
   expect(view.container.querySelector('.v2-mileage-summary')).toHaveClass('v2-workspace-metric-rail', 'is-queue');
   expect(view.container.querySelector('.v2-mileage-summary .v2-workspace-metric-list')).toHaveAttribute('aria-label', '里程查询统计信息');
-  expect(view.container.querySelectorAll('.v2-mileage-summary .v2-workspace-metric-list > span')).toHaveLength(4);
+  expect(view.container.querySelectorAll('.v2-mileage-summary .v2-workspace-metric-list > span')).toHaveLength(3);
   expect(view.container.querySelector('.v2-mileage-summary .v2-workspace-metric-list > span.is-primary')).toHaveTextContent('区间总里程193.3 km2 条车辆日记录');
   expect(view.container.querySelector('.v2-mileage-summary .v2-workspace-metric-list')).toHaveTextContent('已绑定主车辆1 辆已选择 1 辆');
-  expect(view.container.querySelector('.v2-mileage-summary .v2-workspace-metric-list')).toHaveTextContent('统计天数2 天2026/07/13 — 07/14');
   expect(view.container.querySelector('.v2-mileage-summary .v2-workspace-metric-list')).toHaveTextContent('日均里程96.7 km按有效车辆日平均');
+  expect(view.container.querySelector('.v2-mileage-summary-window')).toHaveTextContent('统计窗口2 天2026/07/13 — 07/14');
   expect(view.container.querySelector('.v2-mileage-table-wrap')).toBeInTheDocument();
   expect(screen.getByRole('note', { name: '里程矩阵读表说明' })).toHaveTextContent('0 km已上报、无里程增量');
   expect(screen.getByRole('note', { name: '里程矩阵读表说明' })).toHaveTextContent('—无可用里程');

vehicle-data-platform/apps/web/src/v2/pages/StatisticsPage.tsx

@@ -328,13 +328,6 @@ function SummaryRail({ data, criteria, fleetTotal, loading }: { data?: MileageSt
       tone: 'success',
       emphasis: 'primary'
     },
-    {
-      label: '统计天数',
-      value: withUnit(days, '天'),
-      note: summaryRange,
-      tone: 'neutral',
-      emphasis: 'secondary'
-    },
     {
       label: '日均里程',
       value: loading ? '—' : withUnit(formatKm(data?.averageDailyMileageKm), 'km'),
@@ -348,6 +341,11 @@ function SummaryRail({ data, criteria, fleetTotal, loading }: { data?: MileageSt
     className="v2-mileage-summary"
     ariaLabel="里程查询统计信息"
     items={items}
+    context={<span className="v2-mileage-summary-window">
+      <small>统计窗口</small>
+      <strong>{days} 天</strong>
+      <em>{summaryRange}</em>
+    </span>}
   />;
 }
 

vehicle-data-platform/apps/web/src/v2/styles/workspace.css

@@ -15384,6 +15384,43 @@
   box-shadow: none;
 }
 
+.v2-mileage-summary.v2-workspace-metric-rail.is-queue.has-context > .semi-card-body {
+  grid-template-columns: minmax(0, 1fr) 218px;
+}
+
+.v2-mileage-summary .v2-workspace-metric-list {
+  grid-template-columns: minmax(240px, 1.3fr) minmax(210px, 1fr) minmax(190px, .86fr);
+}
+
+.v2-mileage-summary .v2-workspace-metric-list > span:first-child {
+  background: linear-gradient(145deg, #f3f8ff 0%, #f8fbff 100%);
+  box-shadow: inset 3px 0 #2563eb;
+}
+
+.v2-mileage-summary .v2-workspace-metric-list > span:first-child > strong {
+  color: #0f5fc7;
+  font-size: clamp(22px, 2vw, 28px);
+  letter-spacing: -.035em;
+}
+
+.v2-mileage-summary .v2-workspace-metric-context {
+  background: #f8fafc;
+  padding-inline: 14px;
+}
+
+.v2-mileage-summary-window {
+  width: 100%;
+}
+
+.v2-mileage-summary-window strong {
+  color: #334b66;
+}
+
+.v2-mileage-summary-window em {
+  color: #7f8ea1;
+  font-variant-numeric: tabular-nums;
+}
+
 .v2-mileage-summary > .semi-card-body > .v2-mileage-summary-card.is-primary > .semi-card-body {
   background: linear-gradient(128deg, #0c61e7 0%, #1c73ee 68%, #2c82ef 100%);
 }
@@ -15693,6 +15730,14 @@
     min-width: 52px;
     flex: 1 1 0;
   }
+
+  .v2-mileage-summary.v2-workspace-metric-rail.is-queue.has-context > .semi-card-body {
+    grid-template-columns: minmax(0, 1fr) 190px;
+  }
+
+  .v2-mileage-summary .v2-workspace-metric-list {
+    grid-template-columns: minmax(210px, 1.2fr) minmax(180px, 1fr) minmax(155px, .82fr);
+  }
 }
 
 @media (max-width: 680px) {
@@ -15733,6 +15778,18 @@
     border-radius: 10px;
   }
 
+  .v2-mileage-summary.v2-workspace-metric-rail.is-queue.has-context > .semi-card-body {
+    grid-template-columns: minmax(0, 1fr);
+  }
+
+  .v2-mileage-summary .v2-workspace-metric-list {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+
+  .v2-mileage-summary .v2-workspace-metric-list > span:first-child > strong {
+    font-size: 19px;
+  }
+
   .v2-mileage-query-panel .v2-mileage-vehicle-field > small {
     display: block;
   }
@@ -24817,7 +24874,7 @@
 }
 
 .v2-mileage-summary .v2-workspace-metric-list {
-  grid-template-columns: 1.3fr 1.1fr .9fr .9fr;
+  grid-template-columns: minmax(240px, 1.3fr) minmax(210px, 1fr) minmax(190px, .86fr);
 }
 
 .v2-mileage-summary .v2-workspace-metric-list > span {