diff --git a/web/admin/src/pages/AgentDetail.tsx b/web/admin/src/pages/AgentDetail.tsx
index aa2d444..b5ca975 100644
--- a/web/admin/src/pages/AgentDetail.tsx
+++ b/web/admin/src/pages/AgentDetail.tsx
@@ -257,7 +257,7 @@ export function AgentDetail() {
                 <dt>控制端口</dt>
                 <dd className="mono">{a.probe_tcp_port}/tcp</dd>
                 <dt>数据端口</dt>
-                <dd className="mono">{a.probe_udp_ports.map((p) => `${p}/udp`).join(', ') || '—'}</dd>
+                <dd className="mono">{a.probe_quic_ports.map((p) => `${p}/udp (QUIC)`).join(', ') || '—'}</dd>
                 <dt>版本</dt>
                 <dd>{a.agent_version ?? '—'}</dd>
                 <dt>展示页可见</dt>
diff --git a/web/admin/src/pages/Probes.tsx b/web/admin/src/pages/Probes.tsx
index 00ae758..8a56305 100644
--- a/web/admin/src/pages/Probes.tsx
+++ b/web/admin/src/pages/Probes.tsx
@@ -17,8 +17,10 @@ import { OwnerPicker } from './OwnerPicker'
  */
 function LinkMatrix() {
   const matrix = useQuery(() => api.get<LinkMatrixDto>('/api/admin/links'), [], 8000)
+  const probeState = useQuery(() => api.get<Page<ProbeDto>>('/api/admin/probes'), [], 8000)
   const { busy, run } = useAction()
   const items = matrix.data?.items ?? []
+  const onlineByProbe = new Map((probeState.data?.items ?? []).map((probe) => [probe.id, probe.online]))
   const probes = [...new Map(items.map((i) => [i.probe_id, i.probe_name])).entries()]
   const agents = [...new Map(items.map((i) => [i.agent_id, i.agent_name])).entries()]
   const cell = (probeId: string, agentId: string) => items.find((i) => i.probe_id === probeId && i.agent_id === agentId)
@@ -58,12 +60,20 @@ function LinkMatrix() {
               {agents.map(([agentId]) => {
                 const link = cell(probeId, agentId)
                 if (!link) return <td key={agentId} />
+                const probeOnline = onlineByProbe.get(probeId)
                 const tone = link.connected ? 'ok' : link.linked ? 'warn' : ''
-                const text = link.connected ? '已连接' : link.linked ? '待连接' : '不连'
+                const text = link.connected ? '已连接' : !link.linked ? '不连' : probeOnline === false ? 'Probe 离线' : '待连接'
+                const statusHint = link.connected
+                  ? 'Probe 已和 Agent 建立测量会话'
+                  : !link.linked
+                    ? '这条线路已关闭'
+                    : probeOnline === false
+                      ? 'Probe 当前没有连接到面板；Probe 上线后才会尝试连接 Agent'
+                      : '线路已启用，等待 Probe 与 Agent 建立测量会话'
                 return (
                   <td key={agentId}>
                     <span className="row" style={{ gap: 6 }}>
-                      <button type="button" className="btn small" disabled={busy} title={link.linked ? '点一下：手动关闭' : '点一下：手动开启'} onClick={() => set(link, !link.linked)}>
+                      <button type="button" className="btn small" disabled={busy} title={`${statusHint}。点一下${link.linked ? '手动关闭' : '手动开启'}线路`} onClick={() => set(link, !link.linked)}>
                         <Chip tone={tone}>{text}</Chip>
                       </button>
                       {link.override !== null && link.override !== undefined ? (
diff --git a/web/display/src/App.tsx b/web/display/src/App.tsx
index 86a6cf4..b2d1895 100644
--- a/web/display/src/App.tsx
+++ b/web/display/src/App.tsx
@@ -5,6 +5,7 @@ import { NavLink, Navigate, Route, Routes, useLocation, useParams } from 'react-
 import { SourceButton, ThemeToggle } from '@shared/ui'
 import { Compare } from './pages/Compare'
 import { Line } from './pages/Line'
+import { Host } from './pages/Host'
 import { Overview } from './pages/Overview'
 import { useBackgroundTint } from './backgroundTint'
 import { useBackgroundParallax } from './parallax'
@@ -51,6 +52,7 @@ export function App() {
       <Routes>
         <Route path="/" element={<Overview />} />
         <Route path="/line/:id" element={<LineRoute />} />
+        <Route path="/host/:id" element={<Host />} />
         <Route path="/compare" element={<Compare />} />
         <Route path="*" element={<Navigate to="/" replace />} />
       </Routes>
diff --git a/web/display/src/LineStrips.tsx b/web/display/src/LineStrips.tsx
index ae0d0f0..7718597 100644
--- a/web/display/src/LineStrips.tsx
+++ b/web/display/src/LineStrips.tsx
@@ -19,52 +19,6 @@ const levelOf = (loss: number | null | undefined): Level => (loss === null || lo
 
 const clock = (ms: number) => new Date(ms).toLocaleTimeString('zh-CN', { hour: '2-digit', minute: '2-digit', hour12: false })
 
-interface StripProps {
-  /** 左上：什么延迟（UDP 延迟 p50）。 */
-  rttLabel: string
-  rtt: number | null | undefined
-  /** 右上：丢包还是重传。 */
-  badLabel: string
-  bad: number | null | undefined
-  badHint?: string
-  /** 每 5 分钟一格：这一格的丢包（重传）率、延迟。 */
-  t: number[]
-  badSeries: (number | null)[]
-  ready: boolean
-  /** 提示里这一格的「丢包」叫什么。 */
-  tipBad: string
-  /** 没有数据时占位的格数，和每格长度的说明（「每 5 分钟」）。 */
-  cells: number
-  stepText: string
-  hoursText: string
-  /** 悬停的那一格（UDP 和 TCP 共用）；`null` = 没有。 */
-  hover: number | null
-}
-
-/**
- * 一排小格（每 5 分钟一格，按这 5 分钟的丢包率着色：绿 / 黄 / 红 / 灰 = 没有数据）
- * 尽量轻。
- */
-function Strip({ rttLabel, rtt, badLabel, bad, badHint, t, badSeries, ready, cells, stepText, hoursText, hover }: StripProps) {
-  return (
-    <div className="udp-strip">
-      <div className="udp-head">
-        <span className="udp-title">
-          {rttLabel} <b className="num">{fmtMs(rtt)}</b>
-        </span>
-        <span className="udp-title" title={badHint}>
-          {badLabel} <b className={`udp-rate num ${levelOf(bad)}`}>{fmtPct(bad)}</b>
-        </span>
-      </div>
-      <div className="bars" role="img" aria-label={`近 ${hoursText}每 ${stepText}的${badLabel}情况`}>
-        {(ready ? badSeries : Array.from({ length: cells }, () => null)).map((v, i) => (
-          <span key={t[i] ?? i} className={`bar ${ready ? levelOf(v) : 'none'}${hover === i ? ' on' : ''}`} />
-        ))}
-      </div>
-    </div>
-  )
-}
-
 interface Props {
   lineId: string
   range: OverviewRange
@@ -72,23 +26,23 @@ interface Props {
   m: Record<string, number | null | undefined>
 }
 
-/** 一条线路近一段时间的 UDP 和 TCP：各是一排小格，共用一次请求。 */
+/** 一条线路的 QUIC/TCP 双行摘要，各自显示时延、质量点阵和丢包/重传率。 */
 export function LineStrips({ lineId, range, m }: Props) {
   const info = OVERVIEW_RANGES.find((r) => r.value === range) ?? OVERVIEW_RANGES[0]
   const series = useQuery(
-    () => api.get<SeriesDto>(`/api/public/lines/${encodeURIComponent(lineId)}/series`, { range: info.value, anchor: 'latest', step: info.step, preset: 'udp,tcp', metrics: 'loss.total,rtt.p50,tcp.retrans,tcp.rtt.p50' }),
+    () => api.get<SeriesDto>(`/api/public/lines/${encodeURIComponent(lineId)}/series`, { range: info.value, anchor: 'latest', step: info.step, preset: 'quic,tcp', metrics: 'loss.up,loss.down,loss.total,rtt.p50,rtt.p95,rtt.p99,tcp.retrans,tcp.rtt.p50' }),
     [lineId, info.value],
     30_000,
   )
   const s = series.data
   const t = s?.t ?? []
   const col = (key: string): (number | null)[] => s?.values[key] ?? []
-  // 悬停的那一格：UDP 和 TCP 的时间轴一样，所以同一格同时高亮；提示弹在卡片右侧，一次展示这段时间的 UDP 和 TCP
+  // 悬停的那一格：QUIC 上下行和 TCP 共用时间轴。
   const [hover, setHover] = useState<number | null>(null)
   const last = useRef<number | null>(null) // 提示收回去的动画期间，内容还要留着
   if (hover !== null) last.current = hover
   const shown = hover ?? last.current
-  // 整块线路区域都能触发：按鼠标横向位置对应到小格（UDP 和 TCP 的小格一样宽，量第一排就行），不用精确指到小格上
+  // 整块线路区域都能触发：按鼠标横向位置对应到采样格，不用精确指到小格上。
   const box = useRef<HTMLDivElement>(null)
   const onMove = (e: MouseEvent<HTMLDivElement>) => {
     const bars = box.current?.querySelector('.bars')
@@ -98,19 +52,50 @@ export function LineStrips({ lineId, range, m }: Props) {
   }
   const common = { t, ready: Boolean(s), cells: Math.round((info.hours * 60) / info.stepMin), stepText: `${info.stepMin} 分钟`, hoursText: `${info.hours} 小时`, hover }
   const at = shown !== null && t[shown] !== undefined ? shown : null
+  const lossUp = col('loss.up')
+  const lossDown = col('loss.down')
+  const retrans = col('tcp.retrans')
+  const up = m['loss.up']
+  const down = m['loss.down']
+  const upText = up === null || up === undefined ? '丢包 —' : `${fmtPct(up)} 丢包`
+  const downText = down === null || down === undefined ? '丢包 —' : `${fmtPct(down)} 丢包`
+  const retransValue = m['tcp.retrans']
+  const retransTone = levelOf(retransValue)
+  const retransText = retransValue === null || retransValue === undefined ? '重传 —' : `${fmtPct(retransValue)} 重传`
   return (
     <div className="strips" ref={box} onMouseMove={onMove} onMouseLeave={() => setHover(null)}>
-      <Strip
-        {...common}
-        rttLabel="UDP 延迟 p50"
-        rtt={m['rtt.p50']}
-        badLabel="丢包"
-        bad={m['loss.total']}
-        badHint={`上行丢包 ${fmtPct(m['loss.up'])}　下行丢包 ${fmtPct(m['loss.down'])}`}
-        badSeries={col('loss.total')}
-        tipBad="丢包"
-      />
-      <Strip {...common} rttLabel="TCP RTT p50" rtt={m['tcp.rtt.p50']} badLabel="重传" bad={m['tcp.retrans']} badSeries={col('tcp.retrans')} tipBad="重传" />
+      <div className="line-mini-stack">
+        <div className="line-mini-quic-head" title={`QUIC RTT p50 ${fmtMs(m['rtt.p50'])} · p95 ${fmtMs(m['rtt.p95'])} · p99 ${fmtMs(m['rtt.p99'])}`}>
+          <span>QUIC</span><strong className="num">{fmtMs(m['rtt.p50'])}</strong><small>悬停看 p95 / p99</small>
+        </div>
+        <div className="line-mini-direction-row" title={`去程 Probe → Agent 丢包 ${fmtPct(up)}`}>
+          <span>去程</span>
+          <div className="bars" role="img" aria-label={`近 ${common.hoursText}每 ${common.stepText}的去程丢包`}>
+            {(s ? lossUp : Array.from({ length: common.cells }, () => null)).map((value, i) => (
+              <span key={`up-${t[i] ?? i}`} className={`bar ${s ? levelOf(value) : 'none'}${hover === i ? ' on' : ''}`} />
+            ))}
+          </div>
+          <span className={`line-mini-badge ${levelOf(up)}`}>{upText}</span>
+        </div>
+        <div className="line-mini-direction-row" title={`回程 Agent → Probe 丢包 ${fmtPct(down)}`}>
+          <span>回程</span>
+          <div className="bars" role="img" aria-label={`近 ${common.hoursText}每 ${common.stepText}的回程丢包`}>
+            {(s ? lossDown : Array.from({ length: common.cells }, () => null)).map((value, i) => (
+              <span key={`down-${t[i] ?? i}`} className={`bar ${s ? levelOf(value) : 'none'}${hover === i ? ' on' : ''}`} />
+            ))}
+          </div>
+          <span className={`line-mini-badge ${levelOf(down)}`}>{downText}</span>
+        </div>
+        <div className="line-mini-tcp-row" title={`TCP RTT p50 ${fmtMs(m['tcp.rtt.p50'])}`}>
+          <span>TCP</span><strong className="num">{fmtMs(m['tcp.rtt.p50'])}</strong>
+          <div className="bars" role="img" aria-label={`近 ${common.hoursText}每 ${common.stepText}的 TCP 重传`}>
+            {(s ? retrans : Array.from({ length: common.cells }, () => null)).map((value, i) => (
+              <span key={`retrans-${t[i] ?? i}`} className={`bar ${s ? levelOf(value) : 'none'}${hover === i ? ' on' : ''}`} />
+            ))}
+          </div>
+          <span className={`line-mini-badge ${retransTone}`}>{retransText}</span>
+        </div>
+      </div>
       <div className={`pop num${hover !== null && at !== null ? ' open' : ''}`} role="tooltip" aria-hidden={hover === null}>
         {at !== null ? (
           <>
@@ -118,12 +103,15 @@ export function LineStrips({ lineId, range, m }: Props) {
               {clock(t[at])}–{clock(t[at] + info.stepMin * 60_000)}
             </b>
             <div className="pop-group">
-              <span className="pop-name">UDP</span>
+              <span className="pop-name">QUIC Datagram</span>
+              <span>RTT p50 <em>{fmtMs(col('rtt.p50')[at])}</em></span>
+              <span>RTT p95 <em>{fmtMs(col('rtt.p95')[at])}</em></span>
+              <span>RTT p99 <em>{fmtMs(col('rtt.p99')[at])}</em></span>
               <span>
-                丢包 <em className={levelOf(col('loss.total')[at])}>{fmtPct(col('loss.total')[at])}</em>
+                去程丢包 <em className={levelOf(col('loss.up')[at])}>{fmtPct(col('loss.up')[at])}</em>
               </span>
               <span>
-                延迟 p50 <em>{fmtMs(col('rtt.p50')[at])}</em>
+                回程丢包 <em className={levelOf(col('loss.down')[at])}>{fmtPct(col('loss.down')[at])}</em>
               </span>
             </div>
             <div className="pop-group">
diff --git a/web/display/src/Minimap.tsx b/web/display/src/Minimap.tsx
index 6c43aca..2f5314c 100644
--- a/web/display/src/Minimap.tsx
+++ b/web/display/src/Minimap.tsx
@@ -209,7 +209,8 @@ export function Minimap({ domainStart, domainMin, t, values, fromMs, toMs, onSel
           <path d={path} />
         </svg>
         {ticks
-          .filter((x) => x.midnight)
+          // Outer edges already have date labels; only draw midnight markers inside the selected domain.
+          .filter((x) => x.midnight && x.frac > 0 && x.frac < 1)
           .map((x) => (
             <div key={x.frac} className="midnight" style={{ left: `${x.frac * 100}%` }} />
           ))}
diff --git a/web/display/src/display.css b/web/display/src/display.css
index ce40698..037d085 100644
--- a/web/display/src/display.css
+++ b/web/display/src/display.css
@@ -70,6 +70,523 @@
   padding: 40px 24px 80px;
 }
 
+/* 线路页是数据工作区：宽屏充分利用空间，图表和辅助文字保持清晰对比。 */
+.line-page {
+  --line-secondary: color-mix(in srgb, var(--app-ink) 58%, var(--app-ink-muted));
+  width: min(100%, 1640px);
+  max-width: 1640px;
+  padding-top: 24px;
+  padding-bottom: 56px;
+  /* 正文背景上的全局柔光会让标题、节点状态和说明显得发虚；数据页文字保持锐利。 */
+  text-shadow: none;
+}
+
+.line-page .hero h1 {
+  font-size: 32px;
+}
+
+.line-page .line-title-row {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 16px;
+}
+
+.line-page .line-title-row h1 {
+  margin: 0;
+  font-size: clamp(24px, 2vw, 32px);
+}
+
+.line-page .line-version-switch {
+  gap: 6px;
+}
+
+.line-page .line-route-meta {
+  gap: 6px 12px;
+  margin-top: 6px;
+  font-size: 12px;
+}
+
+.line-page .line-route-status {
+  color: var(--app-ink);
+  font-weight: 650;
+}
+
+.line-page .line-range-picker {
+  margin-top: 8px;
+}
+
+.line-page .faint,
+.line-page .chart-hint,
+.line-page .chart-section h2,
+.line-page .stat .k {
+  color: var(--line-secondary);
+  font-weight: 500;
+}
+
+.line-page .line-peer-name {
+  color: var(--line-secondary);
+  font-weight: 500;
+}
+
+.line-page .line-section-label {
+  color: var(--app-ink);
+  font-size: 13px;
+  font-weight: 700;
+  white-space: nowrap;
+}
+
+.line-page .line-toolbar {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 16px;
+  padding: 8px 12px;
+  border-radius: var(--r-card);
+  background: color-mix(in srgb, var(--app-card) 78%, transparent);
+}
+
+.line-page .line-toolbar-group {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px;
+  min-width: 0;
+}
+
+.line-page .line-smoothing {
+  margin-left: 0;
+}
+
+.line-page .line-header-surface,
+.line-page .line-metric-surface {
+  background: var(--glass-bg);
+  backdrop-filter: var(--glass-filter);
+  box-shadow: inset 0 1px 0 var(--glass-top), var(--glass-drop);
+}
+
+.line-page .line-header-surface {
+  display: flex;
+  flex-direction: column;
+  gap: 10px;
+  padding: 18px 20px 16px;
+  border-radius: var(--r-group-outer);
+}
+
+.line-page .line-metric-surface {
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+  padding: 18px;
+  border-radius: var(--r-group-outer);
+}
+
+.line-page .line-metric-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  flex-wrap: wrap;
+  gap: 10px 20px;
+}
+
+.line-page .line-metric-heading {
+  display: flex;
+  align-items: baseline;
+  flex-wrap: wrap;
+  gap: 4px 12px;
+}
+
+.line-page .line-metric-heading h2 {
+  color: var(--app-ink);
+  font-size: 19px;
+  font-weight: 700;
+}
+
+.line-page .line-metric-heading > span {
+  color: var(--line-secondary);
+  font-size: 12px;
+}
+
+.line-page .range-toolbar {
+  align-items: center;
+  gap: 8px 14px;
+}
+
+.line-page .range-toolbar-right {
+  display: flex;
+  align-items: center;
+  justify-content: flex-end;
+  flex-wrap: wrap;
+  gap: 8px 14px;
+  margin-left: auto;
+}
+
+.line-page .line-data-notes {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 4px 14px;
+  color: var(--line-secondary);
+  font-size: 11px;
+  font-weight: 450;
+  line-height: 1.4;
+}
+
+.line-page .crumbs,
+.line-page .minimap .tick,
+.line-page .minimap .readout,
+.line-page .chart-legend,
+.line-page .stat .v small {
+  color: var(--line-secondary);
+}
+
+.line-page .minimap .tick {
+  font-size: 12px;
+  font-weight: 500;
+}
+
+.line-page .chart-section h2,
+.line-page .chart-card h3 {
+  font-weight: 700;
+}
+
+.line-page .chart-card {
+  min-width: 0;
+  gap: 2px;
+  padding: 12px 14px;
+  background: color-mix(in srgb, var(--glass-line) 4%, transparent);
+  box-shadow: none;
+  backdrop-filter: none;
+}
+
+.line-page .chart-card h3 {
+  font-size: 14px;
+  color: var(--app-ink);
+}
+
+.line-page .quic-chart-grid {
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 14px;
+}
+
+.line-page .line-quic-summary {
+  display: grid;
+  grid-template-columns: repeat(3, minmax(0, 1fr));
+  gap: 12px;
+}
+
+.line-page .line-combo-card {
+  display: flex;
+  min-width: 0;
+  flex-direction: column;
+  justify-content: center;
+  gap: 5px;
+  min-height: 84px;
+  padding: 10px 14px;
+  border-radius: var(--r-control);
+  background: color-mix(in srgb, var(--glass-line) 4%, transparent);
+}
+
+.line-page .line-combo-card h3 {
+  color: var(--line-secondary);
+  font-size: 12px;
+  font-weight: 600;
+}
+
+.line-page .line-combo-primary {
+  display: flex;
+  align-items: baseline;
+  gap: 8px;
+  color: var(--line-secondary);
+  font-size: 13px;
+}
+
+.line-page .line-combo-primary strong {
+  color: var(--app-ink);
+  font-size: 24px;
+  font-weight: 700;
+  line-height: 1.1;
+  font-variant-numeric: tabular-nums;
+}
+
+.line-page .combo-tone-ok {
+  color: var(--app-ok) !important;
+}
+
+.line-page .combo-tone-warn {
+  color: var(--app-warn) !important;
+}
+
+.line-page .combo-tone-bad {
+  color: var(--app-bad) !important;
+}
+
+.line-page .line-combo-secondary,
+.line-page .line-jitter-pair {
+  display: flex;
+  align-items: baseline;
+  flex-wrap: wrap;
+  gap: 4px 10px;
+  color: var(--line-secondary);
+  font-size: 12px;
+  font-variant-numeric: tabular-nums;
+}
+
+.line-page .line-combo-secondary b,
+.line-page .line-jitter-pair b {
+  color: var(--app-ink);
+  font-weight: 650;
+}
+
+.line-page .combo-divider {
+  opacity: 0.55;
+}
+
+.line-page .line-combo-badge {
+  align-self: flex-start;
+  padding: 2px 7px;
+  border-radius: var(--r-pill);
+  background: var(--app-card-inset);
+  color: var(--line-secondary);
+  font-size: 10px;
+  line-height: 1.4;
+  font-variant-numeric: tabular-nums;
+}
+
+.line-page .line-jitter-pair {
+  gap: 8px 20px;
+  font-size: 16px;
+}
+
+.line-page .line-session-bar {
+  display: flex;
+  align-items: center;
+  flex-wrap: wrap;
+  gap: 8px 18px;
+  padding: 10px 4px 2px;
+  border-top: 1px solid var(--glass-head-line);
+  background: transparent;
+  color: var(--line-secondary);
+  font-size: 12px;
+}
+
+.line-page .line-session-title {
+  color: var(--app-ink);
+  font-weight: 700;
+  white-space: nowrap;
+}
+
+.line-page .line-session-items {
+  display: flex;
+  flex: 1;
+  flex-wrap: wrap;
+  gap: 5px 18px;
+}
+
+.line-page .line-session-items b {
+  color: var(--app-ink);
+  font-variant-numeric: tabular-nums;
+}
+
+.line-page .line-session-bar small {
+  flex-basis: 100%;
+  color: var(--line-secondary);
+  font-size: 11px;
+}
+
+.line-page .tiles {
+  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
+  gap: 14px;
+}
+
+.line-page .tiles > .stat {
+  box-shadow: 0 8px 24px -20px var(--app-shadow);
+}
+
+.line-page .line-metric-subhead {
+  grid-column: 1 / -1;
+  margin-top: 4px;
+  padding-top: 8px;
+  border-top: 1px solid var(--app-outline-soft);
+  color: var(--app-ink);
+  font-size: 14px;
+  font-weight: 700;
+}
+
+.line-page .line-wide-note {
+  grid-column: 1 / -1;
+}
+
+.line-page .stack {
+  gap: 10px;
+}
+
+.line-page .chart-section {
+  gap: 6px;
+}
+
+.line-page .chart-section h2 {
+  margin-top: 4px;
+}
+
+.line-page .minimap {
+  margin-top: 6px;
+}
+
+.line-page .minimap .track {
+  height: 42px;
+  margin-bottom: 22px;
+  background: repeating-linear-gradient(
+    135deg,
+    color-mix(in srgb, var(--glass-bg) 94%, var(--glass-shade) 6%) 0 8px,
+    color-mix(in srgb, var(--glass-bg) 86%, var(--glass-shade) 14%) 8px 11px
+  );
+}
+
+.line-page .minimap .ticks {
+  height: 20px;
+}
+
+.line-page .minimap .tick {
+  height: 20px;
+  padding-top: 8px;
+  font-size: 11px;
+  letter-spacing: 0.01em;
+}
+
+.line-page .minimap .tick.date {
+  font-size: 11px;
+  font-weight: 650;
+}
+
+.line-page .minimap .readout {
+  display: flex;
+  align-items: baseline;
+  gap: 6px;
+  margin-top: 3px;
+  font-size: 11px;
+  line-height: 1.5;
+  letter-spacing: 0.01em;
+}
+
+.line-page .minimap .readout > span {
+  margin-left: 2px;
+}
+
+.line-page .minimap .sel {
+  border-block: 1px solid var(--pick);
+  border-inline: 0;
+  border-radius: 8px;
+  background: color-mix(in srgb, var(--pick) 12%, transparent);
+}
+
+.line-page .minimap .sel .h {
+  top: 8px;
+  bottom: 8px;
+  width: 4px;
+  border-radius: 2px;
+}
+
+.line-page .minimap .sel .h::before {
+  position: absolute;
+  inset: -8px -4px;
+  content: '';
+}
+
+.line-page .minimap .sel .h.l {
+  left: -2px;
+}
+
+.line-page .minimap .sel .h.r {
+  right: -2px;
+}
+
+.line-page .minimap svg rect.has {
+  fill: var(--app-card);
+}
+
+.line-page .range-picker > .row:last-child {
+  margin-top: 4px !important;
+}
+
+@media (max-width: 760px) {
+  .line-page {
+    padding: 20px 14px 48px;
+  }
+
+  .line-page .line-header-surface {
+    padding: 14px;
+    border-radius: var(--r-card);
+  }
+
+  .line-page .line-metric-surface {
+    gap: 12px;
+    padding: 12px;
+    border-radius: var(--r-card);
+  }
+
+  .line-page .line-metric-header {
+    align-items: flex-start;
+  }
+
+  .line-page .range-toolbar > .group {
+    max-width: 100%;
+    min-width: 0;
+    flex-wrap: nowrap;
+    overflow-x: auto;
+  }
+
+  .line-page .range-toolbar > .group > button,
+  .line-page .range-toolbar-right .group > button {
+    flex: none;
+    white-space: nowrap;
+  }
+
+  .line-page .range-toolbar-right {
+    width: 100%;
+    flex-wrap: nowrap;
+    justify-content: flex-start;
+    overflow-x: auto;
+  }
+
+  .line-page .minimap .tick {
+    width: max-content;
+    min-width: 0;
+    padding-right: 1px;
+    padding-left: 1px;
+    font-size: 9px;
+    white-space: nowrap;
+  }
+
+  .line-page .minimap .tick:not(.date):not(:nth-child(6n + 1)) {
+    display: none;
+  }
+
+  .line-page .hero h1 {
+    font-size: 28px;
+  }
+
+  .line-page .line-title-row {
+    align-items: flex-start;
+    flex-direction: column;
+    gap: 6px;
+  }
+
+  .line-page .line-smoothing {
+    margin-left: 0;
+  }
+
+  .line-page .line-quic-summary {
+    grid-template-columns: minmax(0, 1fr);
+  }
+}
+
+@media (max-width: 900px) {
+  .line-page .quic-chart-grid {
+    grid-template-columns: minmax(0, 1fr);
+  }
+}
+
 .hero h1 {
   font-size: 40px;
   font-weight: 800;
@@ -716,7 +1233,7 @@
 }
 
 
-/* ── 线路详情的图表：按 UDP、TCP、评分分组，宽图占满一行 ── */
+/* ── 线路详情的图表：按 QUIC、TCP、评分分组，宽图占满一行 ── */
 .chart-section {
   display: flex;
   flex-direction: column;
@@ -799,7 +1316,7 @@
   color: var(--app-ink-faint);
 }
 
-/* ── 总览卡片里的 UDP：一排小格（每 5 分钟一格，按丢包着色）+ 延迟小走势，尽量轻 ── */
+/* ── 总览卡片里的 QUIC Datagram：按方向显示丢包小格 ── */
 .line-name {
   font-weight: 600;
   font-size: 13px;
@@ -809,47 +1326,123 @@
   font-size: 11px;
 }
 
-.udp-strip {
-  position: relative;
+.host-link {
+  color: inherit;
+  text-decoration: none;
+  cursor: pointer;
+  transition: transform 160ms ease, box-shadow 160ms ease;
+}
+
+.host-link:hover,
+.host-link:focus-visible {
+  color: inherit;
+  transform: translateY(-2px);
+  box-shadow: 0 12px 32px -14px color-mix(in srgb, var(--glass-shade) 75%, transparent);
+}
+
+.host-link:focus-visible {
+  outline: none;
+}
+
+.line-mini-stack {
   display: flex;
   flex-direction: column;
   gap: 4px;
 }
 
-.udp-head {
+.line-mini-quic-head {
   display: flex;
-  align-items: baseline;
-  justify-content: space-between;
-  font-size: 11px;
+  min-width: 0;
+  align-items: center;
+  gap: 8px;
+  line-height: 1.2;
 }
 
-.udp-title {
-  color: var(--app-ink-faint);
+.line-mini-quic-head > span,
+.line-mini-direction-row > span:first-child,
+.line-mini-tcp-row > span:first-child {
+  color: var(--app-ink-muted);
+  font-size: 10px;
+  font-weight: 600;
 }
 
-.udp-title b {
-  margin-left: 2px;
-  font-size: 13px;
-  font-weight: 700;
+.line-mini-quic-head > strong,
+.line-mini-tcp-row > strong {
   color: var(--app-ink);
+  font-size: 14px;
+  font-weight: 700;
+  white-space: nowrap;
 }
 
-.udp-title b.udp-rate.ok {
+.line-mini-quic-head > small {
+  margin-left: auto;
+  color: var(--app-ink-faint);
+  font-size: 9px;
+  white-space: nowrap;
+}
+
+.line-mini-direction-row {
+  display: grid;
+  grid-template-columns: 34px minmax(0, 1fr) 66px;
+  align-items: center;
+  gap: 5px;
+  min-width: 0;
+}
+
+.line-mini-direction-row > span:first-child,
+.line-mini-tcp-row > span:first-child {
+  font-weight: 500;
+  white-space: nowrap;
+}
+
+.line-mini-tcp-row {
+  display: grid;
+  grid-template-columns: 34px 46px minmax(0, 1fr) max-content;
+  align-items: center;
+  gap: 5px;
+  min-width: 0;
+  margin-top: 2px;
+  padding-top: 5px;
+  border-top: 1px solid var(--app-outline-soft);
+}
+
+.line-mini-tcp-row > strong {
+  font-size: 12px;
+}
+
+.line-mini-badge {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  padding: 1px 5px;
+  border-radius: var(--r-pill);
+  background: var(--app-card-inset);
+  color: var(--app-ink-muted);
+  font-size: 9px;
+  line-height: 1.4;
+  white-space: nowrap;
+}
+
+.line-mini-badge.ok {
+  background: var(--app-ok-container);
   color: var(--app-ok);
 }
 
-.udp-title b.udp-rate.warn {
+.line-mini-badge.warn {
+  background: var(--app-warn-container);
   color: var(--app-warn);
 }
 
-.udp-title b.udp-rate.bad {
+.line-mini-badge.bad {
+  background: var(--app-bad-container);
   color: var(--app-bad);
 }
 
 .bars {
   display: flex;
-  gap: 2px;
-  height: 10px;
+  min-width: 0;
+  gap: 1.5px;
+  height: 8px;
 }
 
 .bar {
@@ -875,7 +1468,7 @@
   opacity: 1;
 }
 
-/* UDP 和 TCP 两段之间留一点空 */
+/* QUIC 和 TCP 两段之间留一点空 */
 .strips {
   display: flex;
   flex-direction: column;
diff --git a/web/display/src/pages/Compare.tsx b/web/display/src/pages/Compare.tsx
index f070d78..ef45f24 100644
--- a/web/display/src/pages/Compare.tsx
+++ b/web/display/src/pages/Compare.tsx
@@ -21,9 +21,11 @@ interface MetricInfo {
 const METRICS: MetricInfo[] = [
   { id: 'rtt.p50', label: '延迟 p50', unit: 'ms', better: 'lower' },
   { id: 'rtt.p95', label: '延迟 p95', unit: 'ms', better: 'lower' },
-  { id: 'loss.total', label: 'UDP 丢包', unit: '%', better: 'lower' },
-  { id: 'loss.up', label: 'UDP 上行丢包', unit: '%', better: 'lower' },
-  { id: 'loss.down', label: 'UDP 下行丢包', unit: '%', better: 'lower' },
+  { id: 'loss.total', label: 'QUIC 丢包', unit: '%', better: 'lower' },
+  { id: 'loss.up', label: 'QUIC 上行丢包', unit: '%', better: 'lower' },
+  { id: 'loss.down', label: 'QUIC 下行丢包', unit: '%', better: 'lower' },
+  { id: 'loss.run.up_max', label: 'QUIC 上行最长连续丢包', unit: '', better: 'lower' },
+  { id: 'loss.run.down_max', label: 'QUIC 下行最长连续丢包', unit: '', better: 'lower' },
   { id: 'jitter.up.p95', label: '上行抖动', unit: 'ms', better: 'lower' },
   { id: 'jitter.down.p95', label: '下行抖动', unit: 'ms', better: 'lower' },
   { id: 'tcp.rtt.p50', label: 'TCP RTT p50', unit: 'ms', better: 'lower' },
diff --git a/web/display/src/pages/Host.tsx b/web/display/src/pages/Host.tsx
new file mode 100644
index 0000000..74a8d95
--- /dev/null
+++ b/web/display/src/pages/Host.tsx
@@ -0,0 +1,89 @@
+import { ChevronLeft } from 'lucide-react'
+import { useMemo } from 'react'
+import { Link, useParams, useSearchParams } from 'react-router-dom'
+import { api } from '@shared/api/client'
+import { TimeChart } from '@shared/charts/TimeChart'
+import { fmtBytes, fmtSpeed, fmtUptime, pct, useHosts } from '../live'
+import { useQuery } from '@shared/hooks'
+import { Chip, Dot, Segmented, Spinner, Stat } from '@shared/ui'
+import { fmtAgo } from '@shared/format'
+import { OsIcon } from '@shared/osIcon'
+import { Flag, IspIcon, useNodeInfos } from '@shared/nodes'
+import { PageError } from '../lib'
+
+interface HostHistory {
+  t: number[]
+  values: Record<string, (number | null)[]>
+}
+
+const RANGES = [
+  { value: '1h', label: '近 1 小时' },
+  { value: '6h', label: '近 6 小时' },
+  { value: '24h', label: '近 24 小时' },
+  { value: '7d', label: '近 7 天' },
+] as const
+
+export function Host() {
+  const { id = '' } = useParams()
+  const [params, setParams] = useSearchParams()
+  const range = RANGES.find((item) => item.value === params.get('range'))?.value ?? '24h'
+  const { hosts, live } = useHosts()
+  const infos = useNodeInfos()
+  const node = hosts.get(id)
+  const info = infos.get(id)
+  const history = useQuery(() => api.get<HostHistory>(`/api/public/hosts/${encodeURIComponent(id)}`, { range }), [id, range], 30_000)
+  const data = history.data
+  const usage = useMemo(() => data ? [
+    { label: 'CPU', values: data.values.cpu ?? [], color: '--chart-1' },
+    { label: '内存', values: data.values.mem ?? [], color: '--chart-2' },
+    { label: '磁盘', values: data.values.disk ?? [], color: '--chart-4' },
+  ] : [], [data])
+  const network = useMemo(() => data ? [
+    { label: '上行', values: data.values.tx_bps ?? [], color: '--chart-2' },
+    { label: '下行', values: data.values.rx_bps ?? [], color: '--chart-1' },
+  ] : [], [data])
+  const host = node?.host
+
+  return (
+    <main className="page">
+      <div className="crumbs"><Link to="/" className="row"><ChevronLeft size={16} />总览</Link></div>
+      <section className="hero">
+        <h1>{node?.name ?? id}</h1>
+        <div className="row wrap" style={{ marginTop: 12 }}>
+          {info?.country ? <Flag code={info.country} /> : null}
+          {info?.isp_key ? <IspIcon ispKey={info.isp_key} name={info.isp_name} /> : null}
+          {info?.os_name ? <span className="row"><OsIcon os={info.os} name={info.os_name} />{[info.os_name, info.arch].filter(Boolean).join(' / ')}</span> : null}
+          {node ? <><Chip>{node.kind === 'agent' ? 'Agent' : 'Probe'}</Chip><Dot tone={node.online ? 'ok' : 'bad'} /><span className="muted">{node.online ? (node.stale ? '状态数据暂未更新' : '在线') : '离线'}</span></> : <span className="muted">节点信息加载中…</span>}
+          {node?.last_seen_at && !node.online ? <span className="faint">最后在线 {fmtAgo(node.last_seen_at)}</span> : null}
+          <span className={`live-dot ${live ? 'on' : ''}`} title={live ? '实时更新中' : '实时连接中断，正在重连'} />
+        </div>
+      </section>
+
+      <PageError error={history.error} />
+      {host ? <section className="stack" style={{ marginTop: 24 }}>
+        <div className="tiles">
+          <Stat label="CPU" value={host.cpu_percent === null ? '—' : host.cpu_percent.toFixed(1)} unit="%" />
+          <Stat label="内存" value={pct(host.mem_used, host.mem_total)?.toFixed(1) ?? '—'} unit="%" />
+          <Stat label="磁盘" value={pct(host.disk_used, host.disk_total)?.toFixed(1) ?? '—'} unit="%" />
+          <Stat label="累计流量 ↑ / ↓" value={`${fmtBytes(host.net_tx_total)} / ${fmtBytes(host.net_rx_total)}`} />
+          <Stat label="当前网速 ↑ / ↓" value={`${fmtSpeed(node?.online ? host.net_tx_bps : null)} / ${fmtSpeed(node?.online ? host.net_rx_bps : null)}`} />
+          <Stat label="链路速率" value={host.net_link_mbps ? `${host.net_link_mbps} Mbit/s` : '—'} />
+          <Stat label="运行时间" value={fmtUptime(host.uptime_seconds)} />
+          <Stat label="状态更新时间" value={fmtAgo(host.at)} />
+        </div>
+      </section> : <p className="faint" style={{ marginTop: 24 }}>尚无主机资源快照；节点上线并上报状态后会显示实时数据。</p>}
+
+      <section className="card host-history" style={{ marginTop: 20 }}>
+        <div className="agent-head">
+          <span className="agent-name">资源历史</span>
+          <span className="right"><Segmented options={RANGES.map((item) => item)} value={range} onChange={(value) => setParams((prev) => { const next = new URLSearchParams(prev); next.set('range', value); return next }, { replace: true })} /></span>
+          {history.loading ? <Spinner /> : null}
+        </div>
+        {data ? <div className="grid cols-2 host-history-charts">
+          <div><h2>CPU、内存与磁盘</h2><TimeChart t={data.t} unit="%" series={usage} /></div>
+          <div><h2>网络吞吐</h2><TimeChart t={data.t} unit=" B/s" series={network} /></div>
+        </div> : !history.loading ? <p className="faint">所选时间段暂无历史数据。</p> : null}
+      </section>
+    </main>
+  )
+}
diff --git a/web/display/src/pages/Line.tsx b/web/display/src/pages/Line.tsx
index ea0271b..cb51dfc 100644
--- a/web/display/src/pages/Line.tsx
+++ b/web/display/src/pages/Line.tsx
@@ -1,5 +1,5 @@
 import { ChevronLeft } from 'lucide-react'
-import { useMemo } from 'react'
+import { useMemo, useState } from 'react'
 import { IP_VERSIONS, lineIdFor } from '@shared/ipVersions'
 import { Link, useParams, useSearchParams } from 'react-router-dom'
 import { api } from '@shared/api/client'
@@ -7,7 +7,6 @@ import type { LineDto, TestDto } from '@shared/api/types'
 import { TimeChart, type ChartSeries } from '@shared/charts/TimeChart'
 import { fmtAgo, fmtMbps, fmtMs, fmtNum, fmtPct, fmtTime } from '@shared/format'
 import { NodeTag, useNodeInfos } from '@shared/nodes'
-import { fmtBytes, useHosts } from '../live'
 import { useQuery } from '@shared/hooks'
 import { Chip, Dot, LoadingBar, Segmented, Spinner, Stat } from '@shared/ui'
 import { PageError, ScoreChips } from '../lib'
@@ -24,28 +23,25 @@ function tone(value: number | null | undefined, good: number, poor: number): 'ok
   return 'warn'
 }
 
-interface HostSeries {
-  t: number[]
-  values: Record<string, (number | null)[]>
-}
-
 /** 指标卡片：好坏的分界（越低越好）和显示格式。 */
-const TILES: { label: string; key: string; fmt: (v: number | null | undefined) => string; good?: number; poor?: number; unit?: string; /** 这个线路没有数据时不显示（建连任务不是每条线路都开着）。 */ optional?: boolean }[] = [
-  { label: 'UDP 延迟 p50', key: 'rtt.p50', fmt: fmtMs },
-  { label: 'UDP 延迟 p95', key: 'rtt.p95', fmt: fmtMs },
-  { label: 'UDP 丢包', key: 'loss.total', fmt: fmtPct, good: 0.5, poor: 3 },
-  { label: 'UDP 上行丢包', key: 'loss.up', fmt: fmtPct, good: 0.5, poor: 3 },
-  { label: 'UDP 下行丢包', key: 'loss.down', fmt: fmtPct, good: 0.5, poor: 3 },
-  { label: 'UDP 最长连续丢包', key: 'loss.run_max', fmt: fmtNum, unit: '包' },
-  { label: 'UDP 上行抖动 p95', key: 'jitter.up.p95', fmt: fmtMs },
-  { label: 'UDP 下行抖动 p95', key: 'jitter.down.p95', fmt: fmtMs },
-  { label: 'TCP RTT p50', key: 'tcp.rtt.p50', fmt: fmtMs },
-  { label: 'TCP RTT p99', key: 'tcp.rtt.p99', fmt: fmtMs },
-  { label: 'TCP RTT 最大', key: 'tcp.rtt.max', fmt: fmtMs },
-  { label: 'TCP 重传率', key: 'tcp.retrans', fmt: fmtPct, good: 0.5, poor: 3 },
-  { label: 'TCP 建连 p95', key: 'connect.tcp_ms.p95', fmt: fmtMs, optional: true },
-  { label: 'TLS 握手 p95', key: 'connect.tls_ms.p95', fmt: fmtMs, optional: true },
-  { label: '建连成功率', key: 'connect.success', fmt: fmtPct, optional: true },
+type MetricGroup = 'quic' | 'tcp-connect' | 'score'
+
+const METRIC_GROUPS: { value: MetricGroup; label: string }[] = [
+  { value: 'quic', label: 'QUIC' },
+  { value: 'tcp-connect', label: 'TCP' },
+  { value: 'score', label: '评分' },
+]
+
+const QUIC_METRICS = 'rtt.p50,rtt.p95,rtt.p99,loss.total,loss.up,loss.down,loss.run.up_max,loss.run.down_max,jitter.up.p95,jitter.down.p95'
+
+const TILES: { group: Exclude<MetricGroup, 'score'>; label: string; key: string; fmt: (v: number | null | undefined) => string; good?: number; poor?: number; unit?: string; /** 这个线路没有数据时不显示（建连任务不是每条线路都开着）。 */ optional?: boolean }[] = [
+  { group: 'tcp-connect', label: 'TCP RTT p50', key: 'tcp.rtt.p50', fmt: fmtMs },
+  { group: 'tcp-connect', label: 'TCP RTT p99', key: 'tcp.rtt.p99', fmt: fmtMs },
+  { group: 'tcp-connect', label: 'TCP RTT 最大', key: 'tcp.rtt.max', fmt: fmtMs },
+  { group: 'tcp-connect', label: 'TCP 重传率', key: 'tcp.retrans', fmt: fmtPct, good: 0.5, poor: 3 },
+  { group: 'tcp-connect', label: 'TCP 建连 p95', key: 'connect.tcp_ms.p95', fmt: fmtMs, optional: true },
+  { group: 'tcp-connect', label: 'TLS 握手 p95', key: 'connect.tls_ms.p95', fmt: fmtMs, optional: true },
+  { group: 'tcp-connect', label: '建连成功率', key: 'connect.success', fmt: fmtPct, optional: true },
 ]
 
 interface ChartDef {
@@ -55,26 +51,26 @@ interface ChartDef {
   zero?: boolean
   fill?: boolean
   series: { key: string; label: string; color: string; dash?: number[] }[]
-  group: 'udp' | 'tcp' | 'connect' | 'score'
+  group: MetricGroup
   /** 占满一行。 */
   wide?: boolean
 }
 
 const GROUPS = [
-  { id: 'udp', title: 'UDP（往返探测）' },
-  { id: 'tcp', title: 'TCP' },
-  { id: 'connect', title: '建连（TCP 握手、TLS 握手）' },
+  { id: 'quic', title: 'QUIC Datagram' },
+  { id: 'tcp-connect', title: 'TCP' },
   { id: 'score', title: '评分' },
 ] as const
 
 const CHARTS: ChartDef[] = [
-  { id: 'rtt', title: '延迟', group: 'udp', wide: true, unit: 'ms', series: [{ key: 'rtt.p50', label: 'p50', color: '--chart-1' }, { key: 'rtt.p95', label: 'p95', color: '--chart-2' }, { key: 'rtt.p99', label: 'p99', color: '--chart-3' }] },
-  { id: 'loss', title: '丢包', group: 'udp', unit: '%', series: [{ key: 'loss.up', label: '上行', color: '--chart-2' }, { key: 'loss.down', label: '下行', color: '--chart-3' }, { key: 'loss.total', label: '合计', color: '--chart-1', dash: [4, 3] }] },
-  { id: 'jitter', title: '抖动（p95）', group: 'udp', unit: 'ms', series: [{ key: 'jitter.up.p95', label: '上行', color: '--chart-2' }, { key: 'jitter.down.p95', label: '下行', color: '--chart-1' }] },
-  { id: 'tcp', title: '往返时延（RTT）', group: 'tcp', unit: 'ms', series: [{ key: 'tcp.rtt.p50', label: 'p50', color: '--chart-1' }, { key: 'tcp.rtt.p95', label: 'p95', color: '--chart-2' }, { key: 'tcp.rtt.max', label: '最大', color: '--chart-3' }] },
-  { id: 'retrans', title: '重传率', group: 'tcp', unit: '%', fill: true, series: [{ key: 'tcp.retrans', label: '重传率', color: '--chart-3' }] },
-  { id: 'connect-time', title: '建连耗时（p95）', group: 'connect', unit: 'ms', series: [{ key: 'connect.tcp_ms.p95', label: 'TCP 建连', color: '--chart-1' }, { key: 'connect.tls_ms.p95', label: 'TLS 握手', color: '--chart-2' }] },
-  { id: 'connect-ok', title: '建连成功率', group: 'connect', unit: '%', zero: false, series: [{ key: 'connect.success', label: '成功率', color: '--chart-3' }] },
+  { id: 'rtt', title: '延迟', group: 'quic', unit: 'ms', series: [{ key: 'rtt.p50', label: 'p50', color: '--chart-1' }, { key: 'rtt.p95', label: 'p95', color: '--chart-2' }, { key: 'rtt.p99', label: 'p99', color: '--chart-3' }] },
+  { id: 'jitter', title: '抖动（p95）', group: 'quic', unit: 'ms', series: [{ key: 'jitter.up.p95', label: '上行', color: '--chart-2' }, { key: 'jitter.down.p95', label: '下行', color: '--chart-1' }] },
+  { id: 'loss', title: '丢包', group: 'quic', unit: '%', series: [{ key: 'loss.up', label: '上行', color: '--chart-2' }, { key: 'loss.down', label: '下行', color: '--chart-3' }, { key: 'loss.total', label: '合计', color: '--chart-1', dash: [4, 3] }] },
+  { id: 'loss-runs', title: '最长连续丢包', group: 'quic', unit: '包', series: [{ key: 'loss.run.up_max', label: '上行', color: '--chart-2' }, { key: 'loss.run.down_max', label: '下行', color: '--chart-3' }] },
+  { id: 'tcp', title: '往返时延（RTT）', group: 'tcp-connect', unit: 'ms', series: [{ key: 'tcp.rtt.p50', label: 'p50', color: '--chart-1' }, { key: 'tcp.rtt.p95', label: 'p95', color: '--chart-2' }, { key: 'tcp.rtt.max', label: '最大', color: '--chart-3' }] },
+  { id: 'retrans', title: '重传率', group: 'tcp-connect', unit: '%', fill: true, series: [{ key: 'tcp.retrans', label: '重传率', color: '--chart-3' }] },
+  { id: 'connect-time', title: '建连耗时（p95）', group: 'tcp-connect', unit: 'ms', series: [{ key: 'connect.tcp_ms.p95', label: 'TCP 建连', color: '--chart-1' }, { key: 'connect.tls_ms.p95', label: 'TLS 握手', color: '--chart-2' }] },
+  { id: 'connect-ok', title: '建连成功率', group: 'tcp-connect', unit: '%', zero: false, series: [{ key: 'connect.success', label: '成功率', color: '--chart-3' }] },
   { id: 'score', title: '综合评分', group: 'score', wide: true, unit: '', series: [{ key: 'score.reality', label: 'REALITY', color: '--chart-1' }, { key: 'score.hy2', label: 'Hy2', color: '--chart-2' }, { key: 'score.mc', label: 'MC', color: '--chart-4' }, { key: 'score.base', label: '综合', color: '--chart-5', dash: [4, 3] }] },
 ]
 
@@ -100,58 +96,10 @@ function ewma(values: (number | null)[], alpha: number): (number | null)[] {
   })
 }
 
-/** 主机状态：实时数据（SSE）每隔几秒来一次，只重绘这一块，不影响上面的图表。 */
-function HostCard({ agentId, range }: { agentId: string | undefined; range: string | null }) {
-  const history = useQuery(
-    () => (agentId && range ? api.get<HostSeries>(`/api/public/hosts/${agentId}`, { range }) : Promise.resolve(undefined)),
-    [agentId, range],
-    30_000,
-  )
-  const { hosts } = useHosts()
-  const host = agentId ? hosts.get(agentId)?.host : undefined
-  const data = history.data
-  const charts = useMemo(
-    () =>
-      data
-        ? {
-            usage: [
-              { label: 'CPU', values: data.values['cpu'] ?? [], color: '--chart-1' },
-              { label: '内存', values: data.values['mem'] ?? [], color: '--chart-2' },
-              { label: '磁盘', values: data.values['disk'] ?? [], color: '--chart-4' },
-            ],
-            speed: [
-              { label: '上行', values: data.values['tx_bps'] ?? [], color: '--chart-2' },
-              { label: '下行', values: data.values['rx_bps'] ?? [], color: '--chart-1' },
-            ],
-          }
-        : undefined,
-    [data],
-  )
-  if (!host && !data) return null
-  return (
-    <div className="card">
-      <div className="card-title">主机状态</div>
-      {host ? (
-        <div className="grid stats">
-          <Stat label="CPU" value={host.cpu_percent === null ? '—' : host.cpu_percent.toFixed(0)} unit="%" />
-          <Stat label="内存" value={host.mem_total ? ((100 * (host.mem_used ?? 0)) / host.mem_total).toFixed(0) : '—'} unit="%" />
-          <Stat label="磁盘" value={host.disk_total ? ((100 * (host.disk_used ?? 0)) / host.disk_total).toFixed(0) : '—'} unit="%" />
-          <Stat label="累计流量 ↑ / ↓" value={`${fmtBytes(host.net_tx_total)} / ${fmtBytes(host.net_rx_total)}`} />
-        </div>
-      ) : null}
-      {data && charts ? (
-        <div className="grid cols-2" style={{ marginTop: 16 }}>
-          <TimeChart t={data.t} unit="%" series={charts.usage} />
-          <TimeChart t={data.t} unit=" B/s" series={charts.speed} />
-        </div>
-      ) : null}
-    </div>
-  )
-}
-
 export function Line() {
   const { id = '' } = useParams()
   const [params, setParams] = useSearchParams()
+  const [metricGroup, setMetricGroup] = useState<MetricGroup>('quic')
 
   const line = useQuery(() => api.get<LineDto>(`/api/public/lines/${encodeURIComponent(id)}`), [id], 15_000)
   const infos = useNodeInfos()
@@ -162,7 +110,13 @@ export function Line() {
 
   const spec = readSpec(params)
   const period = usePeriod(id, ready, sinceMs, nowMs, spec)
-  const series = usePeriodSeries(id, ready, period)
+  const series = usePeriodSeries(
+    id,
+    ready,
+    period,
+    metricGroup === 'score' ? 'scores' : metricGroup === 'tcp-connect' ? 'tcp,connect' : metricGroup,
+    metricGroup === 'quic' ? QUIC_METRICS : undefined,
+  )
 
   const update = (fn: (q: URLSearchParams) => void) => {
     const q = new URLSearchParams(params)
@@ -198,7 +152,6 @@ export function Line() {
       writeSpec(q, { ...current, span: scale === 24 ? '24' : null, at: scale === 24 && period.domainMin > 1440 ? null : current.at })
     })
 
-  const agentId = line.data?.agent_id
   const lastTestId = line.data?.last_test?.id
   const test = useQuery(() => (lastTestId ? api.get<TestDto>(`/api/public/tests/${lastTestId}`) : Promise.resolve(undefined)), [lastTestId])
 
@@ -211,7 +164,7 @@ export function Line() {
   const charts = useMemo(
     () =>
       s
-        ? GROUPS.map((group) => {
+        ? GROUPS.filter((group) => group.id === metricGroup).map((group) => {
             const cards = CHARTS.filter((def) => def.group === group.id).map((def) => {
               const raw = def.series.map((x) => ({ x, values: s.values[x.key] ?? [] }))
               // 开了 EWMA：原始数据画成淡线垫在后面，平滑后的线画在上面
@@ -223,20 +176,19 @@ export function Line() {
                     ]
                   : raw.map(({ x, values }) => ({ label: x.label, values, color: x.color, dash: x.dash, fill: def.fill }))
               if (!list.some((x) => x.values.some((v) => v !== null))) return null
-              return { def, node: <TimeChart t={s.t} series={list} unit={def.unit} gaps={gaps} zero={def.zero !== false} height={def.wide ? 260 : 220} /> }
+              return { def, node: <TimeChart t={s.t} series={list} unit={def.unit} gaps={gaps} zero={def.zero !== false} height={metricGroup === 'quic' ? 220 : def.wide ? 230 : 190} /> }
             })
             return { group, cards: cards.filter((c): c is NonNullable<typeof c> => c !== null) }
           }).filter((g) => g.cards.length > 0)
         : [],
-    [s, gaps, smooth.alpha],
+    [s, gaps, smooth.alpha, metricGroup],
   )
   const loadingNow = !ready || series.busy
   const chartSections = charts.map(({ group, cards }) => (
     <section className="chart-section" key={group.id}>
-      <h2>{group.title}</h2>
-      <div className="grid cols-2">
+      <div className={`grid cols-2 ${group.id === 'quic' ? 'quic-chart-grid' : ''}`}>
         {cards.map(({ def, node }) => (
-          <div className={`card chart-card has-loading ${def.wide ? 'wide' : ''}`} key={def.id}>
+          <div className={`card chart-card has-loading ${def.wide || cards.length === 1 ? 'wide' : ''}`} key={def.id}>
             <LoadingBar active={loadingNow} />
             <h3>{def.title}</h3>
             {node}
@@ -250,7 +202,7 @@ export function Line() {
   const peak = result?.metrics?.['tcp.bulk.peak.max']
 
   return (
-    <main className="page">
+    <main className="page line-page">
       <div className="crumbs">
         <Link to={id.endsWith('~ipv6') ? '/?ip_version=ipv6' : '/'} className="row">
           <ChevronLeft size={16} />
@@ -258,12 +210,13 @@ export function Line() {
         </Link>
       </div>
 
-      <section className="hero">
-        <h1>
-          {line.data?.name ?? '线路'}
-          {line.data ? <span className="muted" style={{ fontWeight: 400 }}> → {line.data.probe_name}</span> : null}
-        </h1>
-        <div className="row" style={{ marginTop: 12 }}>
+      <section className="hero line-header-surface">
+        <div className="line-title-row">
+          <h1>
+            {line.data?.name ?? '线路'}
+            {line.data ? <span className="muted line-peer-name"> → {line.data.probe_name}</span> : null}
+          </h1>
+          <div className="row line-version-switch">
           {IP_VERSIONS.map((v) => {
             const query = new URLSearchParams(params)
             query.set('ip_version', v.value)
@@ -274,11 +227,12 @@ export function Line() {
             )
           })}
           {line.data && !line.data.ipv6_available && id.endsWith('~ipv6') ? <span className="muted">此 Agent 未配置 IPv6 地址</span> : null}
+          </div>
         </div>
         {line.data ? (
-          <div className="row wrap" style={{ marginTop: 12 }}>
+          <div className="row wrap line-route-meta">
             <Dot tone={line.data.online && line.data.probe_connected ? 'ok' : line.data.online ? 'warn' : 'bad'} />
-            <span className="muted">{line.data.online ? (line.data.probe_connected ? '在线' : 'Agent 在线，测量通道未建立（Probe 没能和它建立测量会话；机器可能是通的，ping 通不代表测量用的 TCP 和 UDP 通道可用）') : 'Agent 离线'}</span>
+            <span className="line-route-status">{line.data.online ? (line.data.probe_connected ? '在线' : '测量未连接') : '离线'}</span>
             <span className="row" style={{ gap: 6 }}>
               <span className="faint">Agent</span>
               <NodeTag info={infos.get(line.data.agent_id)} />
@@ -293,7 +247,7 @@ export function Line() {
             {series.loading && !s ? <Spinner /> : null}
           </div>
         ) : null}
-        <div style={{ marginTop: 16 }}>
+        <div className="line-range-picker">
           <RangePicker
             dayStart={period.dayStart}
             fromMs={period.fromMs}
@@ -305,6 +259,16 @@ export function Line() {
             sinceMs={sinceMs}
             nowMs={nowMs}
             spanMs={period.spanMs}
+            toolbar={
+              <div className="line-toolbar-group line-smoothing">
+                <span className="line-section-label" title="指数加权移动平均：把线条磨平，看清趋势；原始数据以淡线垫在后面">平滑</span>
+                <Segmented<EwmaValue>
+                  options={EWMA.map((x) => ({ value: x.value, label: x.label }))}
+                  value={smooth.value}
+                  onChange={(v) => update((q) => (v === 'off' ? q.delete('ewma') : q.set('ewma', v)))}
+                />
+              </div>
+            }
           >
             <Minimap
               domainStart={period.domainStart}
@@ -346,35 +310,62 @@ export function Line() {
       ) : null}
 
       {s ? (
-        <div className="stack" style={{ marginTop: 24 }}>
-          <div className="tiles">
-            <div className="tile scores-tile has-loading">
-              <LoadingBar active={loadingNow} />
-              <span className="k">评分</span>
-              <ScoreChips metrics={m} />
+        <div className="stack line-metrics" style={{ marginTop: 16 }}>
+          <section className="line-metric-surface">
+            <header className="line-metric-header">
+              <div className="line-metric-heading">
+                <h2>{GROUPS.find((group) => group.id === metricGroup)?.title ?? '线路指标'}</h2>
+                {metricGroup === 'quic' ? <span>往返时延 · 双向丢包 · 抖动</span> : null}
+              </div>
+              <Segmented<MetricGroup> options={METRIC_GROUPS} value={metricGroup} onChange={setMetricGroup} />
+            </header>
+          {metricGroup === 'quic' ? <>
+            <div className="line-quic-summary">
+              <div className="line-combo-card">
+                <h3>QUIC RTT</h3>
+                <div className="line-combo-primary"><span>p50</span><strong>{fmtMs(m['rtt.p50'])}</strong></div>
+                <div className="line-combo-secondary"><span>p95 <b>{fmtMs(m['rtt.p95'])}</b></span><span className="combo-divider">|</span><span>p99 <b>{fmtMs(m['rtt.p99'])}</b></span></div>
+              </div>
+              <div className="line-combo-card">
+                <h3>QUIC Datagram 丢包</h3>
+                <div className="line-combo-primary"><span>总丢包</span><strong className={`combo-tone-${tone(m['loss.total'], 0.5, 3)}`}>{fmtPct(m['loss.total'])}</strong></div>
+                <div className="line-combo-secondary"><span>↑ {fmtPct(m['loss.up'])}</span><span>/</span><span>↓ {fmtPct(m['loss.down'])}</span></div>
+                <span className="line-combo-badge">最长连续 ↑ {fmtNum(m['loss.run.up_max'])} / ↓ {fmtNum(m['loss.run.down_max'])} 包</span>
+              </div>
+              <div className="line-combo-card">
+                <h3>QUIC 抖动 p95</h3>
+                <div className="line-jitter-pair"><span>↑ <b>{fmtMs(m['jitter.up.p95'])}</b></span><span>↓ <b>{fmtMs(m['jitter.down.p95'])}</b></span></div>
+              </div>
             </div>
-            {TILES.filter((t) => !t.optional || m[t.key] != null).map((t) => (
+            <div className="line-session-bar" title="会话计数从 Probe 本次启动开始；传输疑似丢包率不等同于 Datagram 应用丢包率，连接迁移成功率暂不采集。">
+              <strong className="line-session-title">QUIC 会话与传输</strong>
+              {line.data?.quic_health ? (() => {
+                const h = line.data.quic_health!
+                return <>
+                  <div className="line-session-items">
+                    <span>握手 p95 <b>{fmtMs(h.handshake_p95_ms)}</b></span>
+                    <span>成功率 <b>{fmtPct(h.handshake_success_rate)}</b></span>
+                    <span>超时 <b>{fmtPct(h.handshake_timeout_rate)}</b></span>
+                    <span>失败 <b>{fmtPct(h.handshake_failure_rate)}</b></span>
+                    <span>传输疑似丢包 <b>{fmtPct(h.transport_packet_loss_rate)}</b></span>
+                    <span>路径 MTU <b>{fmtNum(h.path_mtu)} B</b></span>
+                  </div>
+                </>
+              })() : <span className="line-session-empty">Probe 尚未上报会话数据</span>}
+            </div>
+          </> : null}
+          {metricGroup !== 'quic' ? <div className="tiles">
+            {metricGroup === 'score' ? <div className="tile scores-tile has-loading"><LoadingBar active={loadingNow} /><span className="k">评分</span><ScoreChips metrics={m} /></div> : null}
+            {TILES.filter((t) => t.group === metricGroup && (!t.optional || m[t.key] != null)).map((t) => (
               <Stat key={t.key} label={t.label} value={t.fmt(m[t.key])} unit={t.unit} tone={t.good !== undefined ? tone(m[t.key], t.good, t.poor ?? Infinity) : ''} />
             ))}
-          </div>
-          <p className="faint">
-            样本数：UDP {fmtNum(s.summary.samples['udp_echo'])} · TCP {fmtNum(s.summary.samples['tcp_echo'])}
-          </p>
-          {s.summary.coverage < 0.95 ? <p className="faint">这个时间段的数据覆盖率是 {(s.summary.coverage * 100).toFixed(0)}%，阴影部分是没有数据的时段。</p> : null}
-
-          <div className="row" style={{ justifyContent: 'flex-end', gap: 8 }}>
-            <span className="faint" title="指数加权移动平均：把线条磨平，看清趋势；原始数据以淡线垫在后面">
-              EWMA 平滑
-            </span>
-            <Segmented<EwmaValue>
-              options={EWMA.map((x) => ({ value: x.value, label: x.label }))}
-              value={smooth.value}
-              onChange={(v) => update((q) => (v === 'off' ? q.delete('ewma') : q.set('ewma', v)))}
-            />
+          </div> : null}
+          <div className="line-data-notes">
+            <span>样本数：QUIC Datagram {fmtNum(s.summary.samples['udp_echo'])} · TCP {fmtNum(s.summary.samples['tcp_echo'])}</span>
+            {s.summary.coverage < 0.95 ? <span>数据覆盖率 {(s.summary.coverage * 100).toFixed(0)}%；阴影部分为无数据时段</span> : null}
           </div>
           {chartSections}
-
-          <HostCard agentId={agentId} range={period.hostRange} />
+          </section>
 
           {test.data && result ? (
             <div className="card">
@@ -392,22 +383,6 @@ export function Line() {
             </div>
           ) : null}
 
-          {s.events.length > 0 ? (
-            <div className="card">
-              <div className="card-title">事件</div>
-              <div className="event-list">
-                {s.events.slice(0, 20).map((e) => (
-                  <div key={e.id}>
-                    <span className="faint num" style={{ minWidth: 120 }}>
-                      {fmtTime(e.at)}
-                    </span>
-                    <span>{e.kind}</span>
-                    {e.detail ? <span className="muted mono">{e.detail}</span> : null}
-                  </div>
-                ))}
-              </div>
-            </div>
-          ) : null}
         </div>
       ) : null}
     </main>
diff --git a/web/display/src/pages/Overview.tsx b/web/display/src/pages/Overview.tsx
index e23371f..e29457d 100644
--- a/web/display/src/pages/Overview.tsx
+++ b/web/display/src/pages/Overview.tsx
@@ -12,7 +12,7 @@ import { PageError } from '../lib'
 import { IPV6_STATES, IpVersionPicker, ipVersionOf } from '@shared/ipVersions'
 import { LineStrips, OVERVIEW_RANGES, type OverviewRange } from '../LineStrips'
 
-const METRICS = ['rtt.p50', 'loss.total', 'loss.up', 'loss.down', 'tcp.rtt.p50', 'tcp.retrans'].join(',')
+const METRICS = ['rtt.p50', 'rtt.p95', 'rtt.p99', 'loss.total', 'loss.up', 'loss.down', 'tcp.rtt.p50', 'tcp.retrans'].join(',')
 
 type SortKey = 'name' | 'rtt' | 'loss'
 
@@ -53,7 +53,7 @@ function NodeCard({ node, labels, infos }: { node: HostItem; labels: string[]; i
   const stale = !node.online || node.stale
   const info = infos.get(node.id)
   return (
-    <div className={`card agent-card ${node.online ? '' : 'offline'}`}>
+    <Link to={`/host/${encodeURIComponent(node.id)}`} className={`card agent-card host-link ${node.online ? '' : 'offline'}`} aria-label={`查看 ${node.name} 主机状态`}>
       <div className="agent-head">
         {/* 有国旗就用国旗开头（在线、离线看右边的标签），没有再用状态点 */}
         {info?.country ? <Flag code={info.country} /> : <Dot tone={node.online ? 'ok' : 'bad'} />}
@@ -133,11 +133,11 @@ function NodeCard({ node, labels, infos }: { node: HostItem; labels: string[]; i
           <div className="faint">这台 {KIND_NAME[node.kind]} 没有上报主机状态</div>
         )}
       </div>
-    </div>
+    </Link>
   )
 }
 
-/** 一条线路（Probe → Agent）：近一段时间的 UDP 丢包和延迟走势、TCP 的 RTT 和重传。 */
+/** 一条线路（Probe → Agent）：近一段时间的 QUIC Datagram 上下行丢包、RTT 和 TCP 重传。 */
 function LineCard({ l, range, infos }: { l: OverviewLineDto; range: OverviewRange; infos: Map<string, NodeInfoDto> }) {
   const probeInfo = infos.get(l.probe_id)
   const agentInfo = infos.get(l.agent_id)
@@ -153,7 +153,7 @@ function LineCard({ l, range, infos }: { l: OverviewLineDto; range: OverviewRang
           <span className="name">{l.name}</span>
         </span>
         {!l.probe_connected && l.online ? (
-          <span title="Agent 在线，但这个 Probe 没能和它建立测量会话（控制通道连不上或握手超时）。机器本身可能是通的、ping 也能通，这里说的是测量用的 TCP 和 UDP 通道，线路或运营商对它们的处理可能和 ping 不一样。">
+          <span title="Agent 在线，但这个 Probe 没能和它建立测量会话（控制通道连不上或握手超时）。机器本身可能是通的、ping 也能通，这里说的是测量用的 TCP 控制通道和 QUIC Datagram 数据通道，线路或运营商对它们的处理可能和 ping 不一样。">
             <Chip tone="warn">测量通道未建立</Chip>
           </span>
         ) : (
diff --git a/web/display/src/periods.ts b/web/display/src/periods.ts
index 1090d72..eda46ae 100644
--- a/web/display/src/periods.ts
+++ b/web/display/src/periods.ts
@@ -98,7 +98,7 @@ export function usePeriod(lineId: string, ready: boolean, sinceMs: number | null
             from: new Date(Math.max(domainStart, sinceMs === null ? domainStart : dayBounds(sinceMs).start)).toISOString(),
             to: new Date(domainEnd).toISOString(),
             step: wide ? '2m' : '1m',
-            preset: 'udp',
+            preset: 'quic',
             metrics: 'rtt.p50,loss.total',
           })
         : Promise.resolve(undefined),
@@ -171,10 +171,10 @@ export function usePeriod(lineId: string, ready: boolean, sinceMs: number | null
 }
 
 /** 这一段的序列；今天的「最近一段」会定时刷新。 */
-export function usePeriodSeries(lineId: string, ready: boolean, period: Period) {
+export function usePeriodSeries(lineId: string, ready: boolean, period: Period, preset = 'quic,tcp,connect,scores', metrics?: string) {
   return useQuery(
-    () => (ready ? api.get<SeriesDto>(`/api/public/lines/${encodeURIComponent(lineId)}/series`, { ...period.query, preset: 'udp,tcp,connect,scores' }) : Promise.resolve(undefined)),
-    [lineId, JSON.stringify(period.query), ready],
+    () => (ready ? api.get<SeriesDto>(`/api/public/lines/${encodeURIComponent(lineId)}/series`, { ...period.query, ...(metrics ? { metrics } : { preset }) }) : Promise.resolve(undefined)),
+    [lineId, JSON.stringify(period.query), ready, preset, metrics],
     period.isToday ? (period.win === 'day' ? 60_000 : 10_000) : undefined,
   )
 }
diff --git a/web/display/src/ranges.tsx b/web/display/src/ranges.tsx
index 2821593..69db9fd 100644
--- a/web/display/src/ranges.tsx
+++ b/web/display/src/ranges.tsx
@@ -107,11 +107,13 @@ interface Props {
   nowMs: number
   /** 这一天里数据的跨度（毫秒）；未知或没有数据是 `null`。 */
   spanMs: number | null
+  /** 跟时长快捷键和刻度选项放在同一行的辅助控件。 */
+  toolbar?: ReactNode
   /** 放在日期和档位下面（缩略图）。 */
   children?: ReactNode
 }
 
-export function RangePicker({ dayStart, fromMs, toMs, onChange, onWindow, scale, onScale, sinceMs, nowMs, spanMs, children }: Props) {
+export function RangePicker({ dayStart, fromMs, toMs, onChange, onWindow, scale, onScale, sinceMs, nowMs, spanMs, toolbar, children }: Props) {
   const picker = useRef<HTMLInputElement>(null)
   const today = dayBounds(nowMs).start
   const firstDay = sinceMs === null ? today : dayBounds(sinceMs).start
@@ -157,7 +159,7 @@ export function RangePicker({ dayStart, fromMs, toMs, onChange, onWindow, scale,
         ) : null}
       </div>
       {children}
-      <div className="row wrap" style={{ marginTop: 8, justifyContent: 'space-between' }}>
+      <div className="row wrap range-toolbar" style={{ marginTop: 8, justifyContent: 'space-between' }}>
         <Segmented
           options={WINDOWS.map((w) => {
             const ok = available.includes(w.value)
@@ -166,14 +168,17 @@ export function RangePicker({ dayStart, fromMs, toMs, onChange, onWindow, scale,
           value={active}
           onChange={onWindow}
         />
-        <Segmented<'24' | '48'>
-          options={[
-            { value: '24', label: '24 小时刻度', title: '缩略图显示一天' },
-            { value: '48', label: '48 小时刻度', title: '缩略图显示连续两天，选区可以跨零点' },
-          ]}
-          value={String(scale) as '24' | '48'}
-          onChange={(v) => onScale(v === '48' ? 48 : 24)}
-        />
+        <div className="range-toolbar-right">
+          {toolbar}
+          <Segmented<'24' | '48'>
+            options={[
+              { value: '24', label: '24 小时刻度', title: '缩略图显示一天' },
+              { value: '48', label: '48 小时刻度', title: '缩略图显示连续两天，选区可以跨零点' },
+            ]}
+            value={String(scale) as '24' | '48'}
+            onChange={(v) => onScale(v === '48' ? 48 : 24)}
+          />
+        </div>
       </div>
     </div>
   )
diff --git a/web/display/vite.config.ts b/web/display/vite.config.ts
index 5ee65d5..3e22b53 100644
--- a/web/display/vite.config.ts
+++ b/web/display/vite.config.ts
@@ -16,6 +16,9 @@ export default defineConfig(({ mode }) => {
     server: {
       port: 5173,
       strictPort: true,
+      // WSL cannot reliably receive inotify events for source files on /mnt/c.
+      // Poll only in WSL so Windows edits trigger HMR without slowing native hosts.
+      watch: process.env.WSL_DISTRO_NAME ? { usePolling: true, interval: 500 } : undefined,
       fs: { allow: ['..'] },
       proxy: {
         // 开发时管理端是另一个 Vite 服务（5175）；和线上一样用同源的 /admin/ 访问它
diff --git a/web/shared/charts/TimeChart.tsx b/web/shared/charts/TimeChart.tsx
index e761fc8..0779646 100644
--- a/web/shared/charts/TimeChart.tsx
+++ b/web/shared/charts/TimeChart.tsx
@@ -160,6 +160,8 @@ export function TimeChart({ t, series, height = 220, unit = '', zero = true, gap
             (u) => {
               const { ctx } = u
               ctx.save()
+              // Coverage gaps are context only; keep the warm mask subtle so spikes stay prominent.
+              ctx.globalAlpha = 0.16
               ctx.fillStyle = shade
               for (const g of latest.current.gaps) {
                 const x0 = Math.max(u.bbox.left, u.valToPos(g.from / 1000, 'x', true))