diff --git a/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.test.tsx b/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.test.tsx
index f982fb69..f06d8946 100644
--- a/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.test.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.test.tsx
@@ -128,6 +128,12 @@ test('starts without a selection and supports expand, collapse, reselection, and
   expect(kpis?.querySelector('.v2-kpi:last-child')).toHaveClass('is-missing', 'is-support');
   expect(view.container.querySelector('.v2-event-strip')).toHaveClass('semi-card');
   expect(view.container.querySelector('.v2-monitor-live-tag')).toHaveClass('semi-tag');
+  const liveStatus = screen.getByLabelText('实时数据状态');
+  expect(liveStatus).toHaveTextContent('数据已同步');
+  expect(liveStatus).toHaveTextContent('实时数据2 辆已载入');
+  expect(liveStatus).toHaveTextContent('地图载荷0 个车辆点');
+  expect(liveStatus).toHaveTextContent('智能刷新重点 10s · 车队 15s · 统计 30s');
+  expect(liveStatus).toHaveTextContent('最近同步等待数据');
   expect(workspace).not.toHaveClass('is-detail-open');
   expect(workspace).not.toHaveClass('is-detail-collapsed');
   expect(firstVehicle).not.toHaveClass('is-selected');
@@ -151,6 +157,7 @@ test('starts without a selection and supports expand, collapse, reselection, and
     expect(screen.getByRole('heading', { name, level: 5 })).toBeInTheDocument();
   }
   expect(screen.getByText('身份、车型与来源覆盖')).toBeInTheDocument();
+  expect(screen.getByText('1/1 在线').closest('.semi-tag')).toBeInTheDocument();
   expect(view.container.querySelector('.v2-report-summary')).toHaveTextContent('平台接收时间');
   expect(view.container.querySelector('.v2-report-summary')).toHaveTextContent('主协议JT808');
   expect(view.container.querySelector('.v2-metric-grid > div:first-child')).toHaveTextContent('速度42');
diff --git a/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.tsx b/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.tsx
index e96ddbf0..797a2c36 100644
--- a/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.tsx
+++ b/vehicle-data-platform/apps/web/src/v2/pages/MonitorPage.tsx
@@ -266,19 +266,20 @@ function VehicleDetailCard({
             <small>{vehicle.vin}</small>
           </div>
           <nav className="v2-detail-actions" aria-label="车辆快捷操作">
-            {workflowLinks.map(([label, path]) => <Link key={label} to={withMonitorReturn(path, monitorReturn)}>{label}</Link>)}
+            {workflowLinks.map(([label, path]) => <Link key={label} to={withMonitorReturn(path, monitorReturn)}><span>{label}</span><IconChevronRight aria-hidden="true" /></Link>)}
           </nav>
         </div>
       <section className="v2-detail-section v2-detail-report">
         <WorkspacePanelHeader
           variant="compact"
           title="最新上报"
+          description="平台最新接收证据"
           meta={<Tag color={vehicle.online ? 'green' : 'grey'} type="light" size="small">{relativeFreshness(vehicle.lastSeen)}</Tag>}
         />
         <div className="v2-report-summary">
-          <span className="is-time"><small>平台接收时间</small><strong>{vehicle.lastSeen || '暂无上报'}</strong></span>
-          <span><small>主协议</small><b>{vehicle.primaryProtocol || '未知'}</b></span>
-          <span><small>接入来源</small><b>{accessSource || '待补充'}</b></span>
+          <span className="is-time" title={vehicle.lastSeen || '暂无上报'}><small>平台接收时间</small><strong>{vehicle.lastSeen || '暂无上报'}</strong></span>
+          <span title={vehicle.primaryProtocol || '未知'}><small>主协议</small><b>{vehicle.primaryProtocol || '未知'}</b></span>
+          <span title={accessSource || '待补充'}><small>接入来源</small><b>{accessSource || '待补充'}</b></span>
         </div>
         <dl className="v2-detail-list">
           <div><dt>坐标</dt><dd><Button theme="borderless" type="tertiary" className="v2-detail-source-link" aria-label="查看全部位置来源" title="展开全部位置来源" onClick={() => setSourceEvidenceOpen(true)}>{hasRealtimeLocation(vehicle) ? `${vehicle.longitude.toFixed(6)}, ${vehicle.latitude.toFixed(6)}` : '—'}</Button></dd></div>
@@ -293,12 +294,12 @@ function VehicleDetailCard({
           meta={<Tag color="blue" type="light" size="small">{vehicle.primaryProtocol || '未知协议'}</Tag>}
         />
         <div className="v2-metric-grid">
-          <div><small>速度</small><strong>{hasRealtimeSpeed(vehicle) ? formatNumber(vehicle.speedKmh, 1) : '—'}<em>{hasRealtimeSpeed(vehicle) ? 'km/h' : ''}</em></strong></div>
-          <div><small>SOC</small><strong>{hasRealtimeSOC(vehicle) ? formatNumber(vehicle.socPercent, 1) : '—'}<em>{hasRealtimeSOC(vehicle) ? '%' : ''}</em></strong></div>
-          <div><small>{mileageLabel}</small><Button theme="borderless" type="tertiary" className="v2-metric-source-link" aria-label="查看总里程全部来源" title="展开全部里程来源" onClick={() => setSourceEvidenceOpen(true)}><span>{hasRealtimeMileage(vehicle) ? formatNumber(vehicle.totalMileageKm, 1) : '—'}<em>{hasRealtimeMileage(vehicle) ? 'km' : ''}</em></span><IconChevronRight /></Button></div>
-          <div><small>今日里程</small><Button theme="borderless" type="tertiary" className="v2-metric-source-link" aria-label="查看今日里程全部来源" title="展开全部里程来源" onClick={() => setSourceEvidenceOpen(true)}><span>{dailyMileage == null ? '—' : formatNumber(dailyMileage, 1)}<em>{dailyMileage == null ? '' : 'km'}</em></span><IconChevronRight /></Button></div>
-          <div><small>状态</small><strong>{statusLabel(status)}</strong></div>
-          <div className={(activeAlerts?.total ?? 0) > 0 ? 'has-alerts' : ''}><small>当前告警</small><strong>{formatNumber(activeAlerts?.total ?? 0)}<em>条</em></strong></div>
+          <div className="is-speed"><small>速度</small><strong>{hasRealtimeSpeed(vehicle) ? formatNumber(vehicle.speedKmh, 1) : '—'}<em>{hasRealtimeSpeed(vehicle) ? 'km/h' : ''}</em></strong></div>
+          <div className="is-soc"><small>SOC</small><strong>{hasRealtimeSOC(vehicle) ? formatNumber(vehicle.socPercent, 1) : '—'}<em>{hasRealtimeSOC(vehicle) ? '%' : ''}</em></strong></div>
+          <div className="is-mileage"><small>{mileageLabel}</small><Button theme="borderless" type="tertiary" className="v2-metric-source-link" aria-label="查看总里程全部来源" title="展开全部里程来源" onClick={() => setSourceEvidenceOpen(true)}><span>{hasRealtimeMileage(vehicle) ? formatNumber(vehicle.totalMileageKm, 1) : '—'}<em>{hasRealtimeMileage(vehicle) ? 'km' : ''}</em></span><IconChevronRight /></Button></div>
+          <div className="is-today"><small>今日里程</small><Button theme="borderless" type="tertiary" className="v2-metric-source-link" aria-label="查看今日里程全部来源" title="展开全部里程来源" onClick={() => setSourceEvidenceOpen(true)}><span>{dailyMileage == null ? '—' : formatNumber(dailyMileage, 1)}<em>{dailyMileage == null ? '' : 'km'}</em></span><IconChevronRight /></Button></div>
+          <div className="is-status"><small>状态</small><strong>{statusLabel(status)}</strong></div>
+          <div className={`is-alert${(activeAlerts?.total ?? 0) > 0 ? ' has-alerts' : ''}`}><small>当前告警</small><strong>{formatNumber(activeAlerts?.total ?? 0)}<em>条</em></strong></div>
         </div>
         {gbHighlights.length ? <div className="v2-gb-highlight-grid">{gbHighlights.map((item) => <div key={`${item.key}-${item.sourceField}`} title={item.description}><small>{item.label}</small><strong>{formatTelemetryValue(item.value, item.displayValue)}<em>{item.unit}</em></strong></div>)}</div> : null}
       </section>
@@ -307,7 +308,7 @@ function VehicleDetailCard({
           variant="compact"
           title="车辆信息"
           description="身份、车型与来源覆盖"
-          meta={`${vehicle.onlineSourceCount}/${vehicle.sourceCount} 在线`}
+          meta={<Tag color={vehicle.onlineSourceCount ? 'green' : 'grey'} type="light" size="small">{vehicle.onlineSourceCount}/{vehicle.sourceCount} 在线</Tag>}
         />
         <dl className="v2-detail-list">
           <div><dt>VIN</dt><dd>{vehicle.vin}</dd></div>
@@ -426,6 +427,12 @@ export default function MonitorPage() {
   const driving = rows.filter((vehicle) => vehicleStatus(vehicle) === 'driving').length;
   const idle = rows.filter((vehicle) => vehicleStatus(vehicle) === 'idle').length;
   const offline = rows.filter((vehicle) => vehicleStatus(vehicle) === 'offline').length;
+  const viewportLoad = mode === 'map'
+    ? (map.data?.clusters.length
+      ? `${map.data.clusters.length} 个聚合 · ${map.data.points.length} 个车辆点`
+      : `${map.data?.points.length ?? 0} 个车辆点`)
+    : `${realtimeListQuery.data?.items.length ?? 0} / ${realtimeListQuery.data?.total ?? 0} 辆`;
+  const lastSyncAt = vehicles.dataUpdatedAt ? new Date(vehicles.dataUpdatedAt) : undefined;
 
   return (
     <div className="v2-monitor-page">
@@ -533,12 +540,17 @@ export default function MonitorPage() {
         ) : null}
       </section> : <MonitorVehicleTable rows={visibleListRows} total={visibleListTotal} page={Math.floor(listOffset / listLimit) + 1} totalPages={Math.max(1, Math.ceil(visibleListTotal / listLimit))} limit={listLimit} loading={filterTransitionPending || realtimeListQuery.isFetching} onSelect={selectVehicle} onPage={(page) => setListOffset((page - 1) * listLimit)} onLimit={(next) => { setListLimit(next); setListOffset(0); }} />}
 
-      <Card className="v2-event-strip" bodyStyle={{ padding: 0 }}>
-        <strong>实时数据状态</strong>
-        <Tag className="v2-monitor-live-tag" color="green" type="light" size="small"><i className="is-online" />{vehicles.isFetching ? '正在刷新' : '实时车辆已同步'}</Tag>
-        <span>{mode === 'map' ? `列表 ${visibleRows.length} 条 · 地图 ${map.data?.clusters.length ? `${map.data.clusters.length} 个聚合 + ${map.data.points.length} 个车辆点` : `${map.data?.points.length ?? 0} 个点`}` : `实时列表 ${realtimeListQuery.data?.items.length ?? 0} / ${realtimeListQuery.data?.total ?? 0} 辆`}</span>
-        <span className="v2-refresh-cadence"><Tag color="blue" type="light" size="small">智能刷新</Tag>重点车辆 {MONITOR_REFRESH.selected / 1000} 秒 · 车队 {MONITOR_REFRESH.fleet / 1000} 秒 · 统计 {MONITOR_REFRESH.summary / 1000} 秒</span>
-        <time>{new Date().toLocaleString('zh-CN', { hour12: false })}</time>
+      <Card className="v2-event-strip" bodyStyle={{ padding: 0 }} aria-label="实时数据状态">
+        <div className="v2-event-sync">
+          <Tag className="v2-monitor-live-tag" color="green" type="light" size="small"><IconRefresh aria-hidden="true" />{vehicles.isFetching ? '正在同步' : '数据已同步'}</Tag>
+          <span><strong>实时数据</strong><small>{visibleRows.length.toLocaleString('zh-CN')} 辆已载入</small></span>
+        </div>
+        <div className="v2-event-load"><small>{mode === 'map' ? '地图载荷' : '列表载荷'}</small><span>{viewportLoad}</span></div>
+        <div className="v2-refresh-cadence">
+          <Tag color="blue" type="light" size="small"><IconRefresh aria-hidden="true" />智能刷新</Tag>
+          <span>重点 {MONITOR_REFRESH.selected / 1000}s · 车队 {MONITOR_REFRESH.fleet / 1000}s · 统计 {MONITOR_REFRESH.summary / 1000}s</span>
+        </div>
+        <time dateTime={lastSyncAt?.toISOString()}><span><small>最近同步</small><b>{lastSyncAt ? lastSyncAt.toLocaleTimeString('zh-CN', { hour12: false }) : '等待数据'}</b></span></time>
       </Card>
       {mobileEntryOpen ? <MobileEntry onClose={() => setMobileEntryOpen(false)} /> : null}
     </div>
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 69337b3d..bebf8f81 100644
--- a/vehicle-data-platform/apps/web/src/v2/styles/workspace.css
+++ b/vehicle-data-platform/apps/web/src/v2/styles/workspace.css
@@ -9192,3 +9192,375 @@
     margin-top: 7px;
   }
 }
+
+/* Semi UI workspace migration: monitor vehicle inspector and live status rail. */
+.v2-vehicle-detail.semi-card {
+  background: #f6f8fb;
+  padding: 12px;
+  scrollbar-color: #a8b7c9 transparent;
+  scrollbar-width: thin;
+}
+
+.v2-vehicle-detail.semi-card::-webkit-scrollbar {
+  width: 8px;
+}
+
+.v2-vehicle-detail.semi-card::-webkit-scrollbar-thumb {
+  border: 2px solid transparent;
+  border-radius: 999px;
+  background: #a8b7c9;
+  background-clip: padding-box;
+}
+
+.v2-detail-shell-header {
+  top: -12px;
+  margin: -12px -12px 8px;
+  border-bottom-color: #dfe7f0;
+  background: rgba(255, 255, 255, .96);
+  padding: 13px 12px 10px;
+  box-shadow: 0 6px 18px rgba(31, 53, 80, .045);
+  backdrop-filter: blur(10px);
+}
+
+.v2-detail-shell-header .v2-detail-controls {
+  top: 12px;
+  right: 12px;
+}
+
+.v2-detail-shell-header .v2-detail-title {
+  padding-bottom: 11px;
+}
+
+.v2-detail-shell-header .v2-detail-title strong {
+  font-size: 19px;
+  font-weight: 780;
+  letter-spacing: -.035em;
+}
+
+.v2-detail-actions {
+  gap: 5px;
+}
+
+.v2-detail-actions a {
+  justify-content: space-between;
+  padding: 0 9px;
+  border-color: #dce5ef;
+  background: #f9fbfd;
+}
+
+.v2-detail-actions a > span {
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.v2-detail-actions a > .semi-icon {
+  color: #94a3b8;
+  font-size: 11px;
+}
+
+.v2-detail-actions a:first-child > .semi-icon,
+.v2-detail-actions a:hover > .semi-icon,
+.v2-detail-actions a:focus-visible > .semi-icon {
+  color: currentColor;
+}
+
+.v2-vehicle-detail .v2-detail-section {
+  border-color: #dce5ef;
+  border-radius: 11px;
+  box-shadow: 0 6px 20px rgba(31, 53, 80, .045);
+}
+
+.v2-detail-section > .v2-workspace-panel-header {
+  min-height: 50px;
+  padding: 9px 11px;
+}
+
+.v2-detail-section > .v2-workspace-panel-header .v2-workspace-panel-copy {
+  gap: 3px;
+}
+
+.v2-detail-section > .v2-workspace-panel-header .v2-workspace-panel-copy > h5 {
+  color: #263a52;
+  font-size: 12px;
+  font-weight: 730;
+}
+
+.v2-detail-section > .v2-workspace-panel-header .v2-workspace-panel-copy > .semi-typography {
+  color: #8794a6;
+}
+
+.v2-vehicle-detail .v2-detail-report {
+  border-color: #cfdff3;
+}
+
+.v2-detail-report > .v2-workspace-panel-header {
+  background: linear-gradient(100deg, #f1f7ff 0%, #f8fbff 64%, #fff 100%);
+}
+
+.v2-report-summary {
+  border-color: #d5e2f1;
+  background: #fafcff;
+}
+
+.v2-report-summary > .is-time {
+  background: linear-gradient(135deg, #f2f7ff 0%, #fafcff 100%);
+}
+
+.v2-report-summary strong {
+  color: #174d8d;
+  font-weight: 750;
+}
+
+.v2-report-summary b {
+  color: #3b5879;
+  font-weight: 700;
+}
+
+.v2-detail-section > .v2-metric-grid {
+  overflow: hidden;
+  border-color: #dce5ef;
+  border-radius: 10px;
+  background: #fbfcfe;
+}
+
+.v2-detail-section > .v2-metric-grid > div {
+  min-height: 70px;
+  background: #fff;
+}
+
+.v2-detail-section > .v2-metric-grid > div:hover {
+  background: #fbfdff;
+}
+
+.v2-detail-section > .v2-metric-grid > .is-speed::after { background: #78a9ef; }
+.v2-detail-section > .v2-metric-grid > .is-soc::after { background: #65bf94; }
+.v2-detail-section > .v2-metric-grid > .is-mileage::after { background: #79a7ea; }
+.v2-detail-section > .v2-metric-grid > .is-today::after { background: #2f7de9; }
+.v2-detail-section > .v2-metric-grid > .is-status::after { background: #43b77d; }
+.v2-detail-section > .v2-metric-grid > .is-alert::after { background: #d8e0ea; }
+.v2-detail-section > .v2-metric-grid > .is-today strong,
+.v2-detail-section > .v2-metric-grid > .is-today .v2-metric-source-link { color: #1268df; }
+.v2-detail-section > .v2-metric-grid > .has-alerts::after { background: #eb6d70; }
+
+.v2-vehicle-detail .v2-source-evidence.is-compact.semi-card {
+  margin-top: 8px;
+  overflow: hidden;
+  border: 1px solid #dce5ef;
+  border-radius: 11px;
+  background: #fff;
+  box-shadow: 0 6px 20px rgba(31, 53, 80, .04);
+}
+
+.v2-vehicle-detail .v2-source-evidence.is-compact .v2-source-evidence-trigger {
+  min-height: 56px;
+  padding: 10px 11px;
+}
+
+.v2-vehicle-detail .v2-source-evidence.is-compact .v2-source-evidence-body {
+  padding: 10px 11px 12px;
+}
+
+.v2-event-strip.semi-card {
+  min-height: 52px;
+  overflow: hidden;
+  border-color: #dce5ef;
+  border-radius: 11px;
+  background: rgba(255, 255, 255, .98);
+  box-shadow: 0 6px 20px rgba(31, 53, 80, .045);
+}
+
+.v2-event-strip > .semi-card-body {
+  display: grid;
+  min-height: 50px;
+  grid-template-columns: auto minmax(150px, 1fr) auto auto;
+  align-items: center;
+  gap: 0;
+  padding: 0 13px;
+}
+
+.v2-event-sync {
+  display: flex;
+  min-width: 0;
+  align-items: center;
+  gap: 9px;
+  padding-right: 14px;
+}
+
+.v2-event-sync > span {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 2px;
+  line-height: 1.15;
+}
+
+.v2-event-sync > span strong {
+  color: #2a3c53;
+  font-size: 10px;
+}
+
+.v2-event-sync > span small,
+.v2-event-load > small,
+.v2-event-strip time small {
+  color: #8a97a8;
+  font-size: 8px;
+  font-weight: 550;
+  white-space: nowrap;
+}
+
+.v2-monitor-live-tag.semi-tag {
+  height: 26px;
+  gap: 5px;
+  padding-inline: 8px;
+  border-radius: 13px;
+  font-size: 9px;
+  font-weight: 700;
+}
+
+.v2-monitor-live-tag .semi-tag-content,
+.v2-refresh-cadence .semi-tag-content {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+}
+
+.v2-event-load {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  gap: 3px;
+  border-left: 1px solid #e5ebf2;
+  padding: 0 14px;
+  line-height: 1.15;
+}
+
+.v2-event-load > span {
+  overflow: hidden;
+  color: #4f6075;
+  font-size: 9px;
+  font-weight: 650;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.v2-refresh-cadence {
+  display: flex;
+  min-width: 0;
+  align-items: center;
+  gap: 8px;
+  border-left: 1px solid #e5ebf2;
+  padding: 0 14px;
+}
+
+.v2-refresh-cadence > span {
+  color: #64748b;
+  font-size: 9px;
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+}
+
+.v2-refresh-cadence .semi-tag {
+  height: 24px;
+  border-radius: 12px;
+  font-size: 8px;
+  font-weight: 700;
+}
+
+.v2-event-strip time {
+  display: flex;
+  min-width: 92px;
+  align-items: center;
+  justify-content: flex-end;
+  gap: 7px;
+  border-left: 1px solid #e5ebf2;
+  padding-left: 14px;
+  color: #8290a3;
+}
+
+.v2-event-strip time > span {
+  display: flex;
+  align-items: flex-end;
+  flex-direction: column;
+  gap: 2px;
+  line-height: 1.1;
+}
+
+.v2-event-strip time b {
+  color: #4c5e73;
+  font-size: 9px;
+  font-weight: 700;
+  font-variant-numeric: tabular-nums;
+  white-space: nowrap;
+}
+
+@media (max-width: 1180px) {
+  .v2-event-strip > .semi-card-body {
+    grid-template-columns: auto minmax(120px, 1fr) auto;
+  }
+
+  .v2-event-load {
+    display: none;
+  }
+}
+
+@media (max-width: 760px) {
+  .v2-vehicle-detail.semi-card {
+    padding: 16px 10px 14px;
+  }
+
+  .v2-detail-shell-header {
+    top: -16px;
+    margin: -12px -10px 8px;
+    padding: 17px 10px 10px;
+  }
+
+  .v2-detail-shell-header .v2-detail-controls {
+    top: 16px;
+    right: 10px;
+  }
+
+  .v2-detail-actions a {
+    padding-inline: 11px;
+  }
+
+  .v2-detail-section > .v2-workspace-panel-header {
+    min-height: 54px;
+  }
+
+  .v2-event-strip > .semi-card-body {
+    grid-template-columns: minmax(0, 1fr) auto;
+    gap: 8px 0;
+    padding: 9px 10px;
+  }
+
+  .v2-event-sync {
+    padding-right: 8px;
+  }
+
+  .v2-event-load {
+    display: none;
+  }
+
+  .v2-refresh-cadence {
+    display: flex;
+    grid-column: 1 / -1;
+    grid-row: 2;
+    align-items: center;
+    justify-content: space-between;
+    border-top: 1px solid #edf1f5;
+    border-left: 0;
+    padding: 8px 0 0;
+  }
+
+  .v2-refresh-cadence > span {
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .v2-event-strip time {
+    min-width: 82px;
+    border-left: 0;
+    padding-left: 8px;
+  }
+}