diff --git a/docs/design/bell/index.html b/docs/design/bell/index.html
index eaceefe..377d517 100644
--- a/docs/design/bell/index.html
+++ b/docs/design/bell/index.html
@@ -230,7 +230,150 @@
       .nav .count { position: absolute; margin: -24px 0 0 25px; }
       .duty-grid { grid-template-columns: 285px minmax(390px, 1fr); }
       .action-panel { grid-column: 1/-1; }
-      .action-scroll { max-height: none; display: grid; grid-template-columns: rep…4257 tokens truncated…t>覆盖范围</dt><dd>3 个点位</dd><dt>检测区域</dt><dd>3 个区域版本</dd><dt>继承来源</dt><dd>设备覆盖</dd><dt>样本命中</dt><dd>14</dd></dl><div class="rule-card-actions"><button class="btn" data-edit-rule>查看试运行</button><button class="btn btn-primary" id="publishTrialRule">正式发布</button></div></article>
+      .action-scroll { max-height: none; display: grid; grid-template-columns: repeat(3, 1fr); }
+      .disposition { border-top: 0; border-left: 1px solid var(--line); }
+    }
+    @media (max-width: 850px) {
+      :root { --sidebar: 0px; }
+      .app { display: block; padding-bottom: 66px; }
+      .sidebar { display: none; }
+      .topbar { padding: 8px 12px; }
+      .site span, .top-actions .select { display: none; }
+      .content { padding: 12px; }
+      .duty-grid, .chain-grid, .chart-grid { grid-template-columns: 1fr; }
+      .alert-list, .action-scroll { max-height: none; }
+      .action-scroll { display: block; }
+      .disposition { border-left: 0; border-top: 1px solid var(--line); }
+      .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
+      .rule-grid { grid-template-columns: 1fr 1fr; }
+      .fact-grid { grid-template-columns: repeat(2, 1fr); }
+      .mobile-nav { position: fixed; z-index: 50; left: 8px; right: 8px; bottom: 8px; display: grid; grid-template-columns: repeat(5, 1fr); padding: 5px; border: 1px solid var(--line); border-radius: 14px; background: var(--surface); box-shadow: var(--shadow); }
+      .mobile-nav button { min-height: 48px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); display: grid; place-items: center; font-size: 11px; }
+      .mobile-nav button.active { color: #c9c1ff; background: var(--primary-soft); }
+    }
+    @media (max-width: 560px) {
+      .page-head { display: grid; }
+      .stats, .rule-grid { grid-template-columns: 1fr; }
+      .form-grid { grid-template-columns: 1fr; }
+      .form-field.full { grid-column: auto; }
+      .video-stage { margin-inline: 8px; }
+      .fact-grid { margin-inline: 8px; }
+      .evidence-summary { display: grid; }
+      .disposition-actions { grid-template-columns: 1fr; }
+    }
+    @media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; scroll-behavior: auto !important; } }
+  </style>
+</head>
+<body>
+  <svg aria-hidden="true" width="0" height="0" style="position:absolute">
+    <symbol id="i-inbox" viewBox="0 0 24 24"><path d="M4 4h16v16H4Z"/><path d="m4 14 5-1 2 3h2l2-3 5 1"/></symbol>
+    <symbol id="i-event" viewBox="0 0 24 24"><path d="M6 3h12v18H6z"/><path d="M9 8h6m-6 4h6m-6 4h4"/></symbol>
+    <symbol id="i-rule" viewBox="0 0 24 24"><path d="M4 6h7m6 0h3M4 12h3m6 0h7M4 18h9m6 0h1"/><circle cx="14" cy="6" r="2"/><circle cx="10" cy="12" r="2"/><circle cx="16" cy="18" r="2"/></symbol>
+    <symbol id="i-phone" viewBox="0 0 24 24"><path d="M5 4h4l2 5-3 2a16 16 0 0 0 5 5l2-3 5 2v4c-8 2-17-7-15-15Z"/></symbol>
+    <symbol id="i-chart" viewBox="0 0 24 24"><path d="M4 20V9m6 11V4m6 16v-7m4 7H2"/></symbol>
+    <symbol id="i-shield" viewBox="0 0 24 24"><path d="m12 3 8 3v6c0 5-3 8-8 9-5-1-8-4-8-9V6Z"/><path d="m9 12 2 2 4-5"/></symbol>
+    <symbol id="i-search" viewBox="0 0 24 24"><circle cx="11" cy="11" r="7"/><path d="m20 20-4-4"/></symbol>
+    <symbol id="i-sun" viewBox="0 0 24 24"><circle cx="12" cy="12" r="4"/><path d="M12 2v2m0 16v2M4.9 4.9l1.4 1.4m11.4 11.4 1.4 1.4M2 12h2m16 0h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></symbol>
+    <symbol id="i-bell" viewBox="0 0 24 24"><path d="M18 8a6 6 0 0 0-12 0c0 7-3 7-3 9h18c0-2-3-2-3-9"/><path d="M10 21h4"/></symbol>
+    <symbol id="i-check" viewBox="0 0 24 24"><path d="m5 12 4 4L19 6"/></symbol>
+    <symbol id="i-alert" viewBox="0 0 24 24"><path d="M12 3 2 20h20Z"/><path d="M12 9v4m0 3v.01"/></symbol>
+    <symbol id="i-play" viewBox="0 0 24 24"><path d="m8 5 11 7-11 7Z"/></symbol>
+    <symbol id="i-expand" viewBox="0 0 24 24"><path d="M8 3H3v5m13-5h5v5M8 21H3v-5m13 5h5v-5"/></symbol>
+    <symbol id="i-download" viewBox="0 0 24 24"><path d="M12 3v12m0 0 5-5m-5 5-5-5M4 20h16"/></symbol>
+    <symbol id="i-lock" viewBox="0 0 24 24"><rect x="4" y="10" width="16" height="11" rx="2"/><path d="M8 10V7a4 4 0 0 1 8 0v3"/></symbol>
+    <symbol id="i-clock" viewBox="0 0 24 24"><circle cx="12" cy="12" r="9"/><path d="M12 7v6l4 2"/></symbol>
+    <symbol id="i-more" viewBox="0 0 24 24"><circle cx="5" cy="12" r="1"/><circle cx="12" cy="12" r="1"/><circle cx="19" cy="12" r="1"/></symbol>
+  </svg>
+
+  <div class="prototype-banner">PROTOTYPE - 仅供枚举交互，非实现依据</div>
+  <div class="app">
+    <aside class="sidebar" aria-label="Bell 主导航">
+      <div class="brand"><div class="brand-mark">Y</div><div class="brand-copy"><strong>YoVision</strong><small>Bell · Duty Console</small></div></div>
+      <div class="nav-label">Operations</div>
+      <nav class="nav">
+        <button data-view="duty" aria-current="page"><svg class="icon"><use href="#i-inbox"/></svg><span>值班台</span><span class="count">6</span></button>
+        <button data-view="events"><svg class="icon"><use href="#i-event"/></svg><span>事件中心</span></button>
+        <button data-view="rules"><svg class="icon"><use href="#i-rule"/></svg><span>规则策略</span></button>
+        <button data-view="chains"><svg class="icon"><use href="#i-phone"/></svg><span>升级链</span></button>
+        <button data-view="reports"><svg class="icon"><use href="#i-chart"/></svg><span>运营报表</span></button>
+        <button data-view="audit"><svg class="icon"><use href="#i-shield"/></svg><span>审计日志</span></button>
+      </nav>
+      <div class="shift-card"><strong>安保值班组 · 白班</strong><span>08:00–20:00 · 4 人在线</span><div class="shift-bar"><i></i></div></div>
+    </aside>
+
+    <main class="main" id="main-content" tabindex="-1">
+      <header class="topbar">
+        <div class="site"><strong>青藤寄宿学校 · 值班中心</strong><span>客户侧私有实例 · 当前仅匿名安全规则</span></div>
+        <div class="top-actions">
+          <select class="select" id="stateSelect" aria-label="原型状态演示"><option value="normal">正常状态</option><option value="loading">加载中</option><option value="weak">弱网 / 证据失败</option><option value="empty">队列为空</option><option value="denied">无权限</option></select>
+          <button class="btn icon-btn" id="themeToggle" aria-label="切换明暗主题" title="切换明暗主题"><svg class="icon"><use href="#i-sun"/></svg></button>
+          <button class="btn icon-btn" aria-label="查看通知" title="查看通知"><svg class="icon"><use href="#i-bell"/></svg></button>
+        </div>
+      </header>
+
+      <div class="content">
+        <section class="state-layer" id="stateLayer" aria-live="polite"></section>
+
+        <section class="view active" data-page="duty">
+          <div class="page-head"><div><h1>实时值班台</h1><p>先确认高危预警，再查看证据与升级状态；重复投递不会生成重复处置。</p></div><div class="page-actions"><span class="badge success">值班组在线</span><button class="btn" id="muteButton">限时静默</button></div></div>
+          <div class="duty-grid">
+            <section class="card queue" aria-label="待处置预警队列">
+              <div class="card-head"><h2>待处置预警</h2><span class="badge danger">6 个未 ack</span></div>
+              <div class="queue-head"><div class="queue-tabs" role="tablist"><button class="active" role="tab" aria-selected="true">全部 9</button><button role="tab">高危 3</button><button role="tab">我的 2</button></div></div>
+              <div class="alert-list" id="alertList"></div>
+            </section>
+
+            <section class="card evidence" aria-label="事件事实与证据">
+              <div class="evidence-summary"><div><span class="badge danger" id="selectedSeverity">高危 · S1</span><h2 id="selectedTitle">危险区域闯入</h2><p id="selectedMeta">北围墙 01 · 23:14:08 · EVT-01J8…7A2</p></div><button class="btn icon-btn" aria-label="更多事件操作"><svg class="icon"><use href="#i-more"/></svg></button></div>
+              <div class="evidence-tabs" role="tablist"><button class="active" role="tab" aria-selected="true">视频片段</button><button role="tab">抓拍 2</button><button role="tab">结构化事实</button></div>
+              <div class="video-stage" id="videoStage">
+                <svg viewBox="0 0 960 540" role="img" aria-label="北围墙 01 事件视频模拟画面，匿名目标进入危险区域">
+                  <defs><linearGradient id="bellSky" x1="0" y1="0" x2="0" y2="1"><stop stop-color="#102337"/><stop offset="1" stop-color="#060a11"/></linearGradient><pattern id="bellScan" width="8" height="8" patternUnits="userSpaceOnUse"><path d="M0 8h8" stroke="#fff" stroke-opacity=".035"/></pattern></defs>
+                  <rect width="960" height="540" fill="url(#bellSky)"/><path d="M0 340 180 260 355 316 520 232 690 306 830 230 960 285V540H0Z" fill="#142638"/><rect y="414" width="960" height="126" fill="#111820"/><path d="M0 416h960M0 474h960" stroke="#6d8496" stroke-opacity=".48"/><path d="M150 305v235m250-240v240m280-255v255m170-280v280" stroke="#758b9d" stroke-width="4"/><polygon points="92,362 305,318 558,342 525,480 126,478" fill="#fb7185" fill-opacity=".15" stroke="#fb7185" stroke-width="4" stroke-dasharray="10 7"/><rect x="354" y="330" width="63" height="148" fill="none" stroke="#fbbf24" stroke-width="4"/><text x="354" y="319" fill="#ffe18a" font-size="17">person · 0.92</text><circle cx="385" cy="310" r="24" fill="none" stroke="#fbbf24" stroke-width="4"/><rect width="960" height="540" fill="url(#bellScan)"/><text x="26" y="38" fill="#d6e8f5" font-size="18">北围墙 01 · 事件片段</text><text x="26" y="66" fill="#91a6b8" font-size="14">事发前 8s · 事发后 12s · 匿名目标</text>
+                </svg>
+                <div class="video-controls"><button aria-label="播放片段"><svg class="icon"><use href="#i-play"/></svg></button><span class="mono">00:11 / 00:20</span><div class="timeline-bar"><i></i></div><button aria-label="全屏查看"><svg class="icon"><use href="#i-expand"/></svg></button><button aria-label="下载授权证据"><svg class="icon"><use href="#i-download"/></svg></button></div>
+              </div>
+              <div class="fact-grid">
+                <div class="fact"><span>规则</span><strong id="factRule">非授权人员进入</strong></div><div class="fact"><span>置信度</span><strong>0.92</strong></div><div class="fact"><span>持续时间</span><strong>8.4s</strong></div><div class="fact"><span>证据状态</span><strong style="color:var(--success)">已校验</strong></div>
+              </div>
+              <div class="privacy-note"><svg class="icon"><use href="#i-lock"/></svg><span>仅显示与本事件关联的 20 秒证据。常态录像仍在客户 NVR，本页不暴露流地址或摄像头凭据。</span></div>
+            </section>
+
+            <aside class="card action-panel" aria-label="预警确认与处置">
+              <div class="card-head"><h2>处置与升级</h2><span class="badge warning" id="ackState">等待 ack</span></div>
+              <div class="action-scroll">
+                <div class="ack-box"><button class="btn btn-primary" id="ackButton"><svg class="icon"><use href="#i-check"/></svg>确认接手</button><p id="ackHelp">一次点击确认；并发确认时会显示实际接手人，不覆盖对方结果。</p></div>
+                <div><div class="countdown"><svg class="icon" style="color:var(--warning);width:26px;height:26px"><use href="#i-clock"/></svg><div><strong id="countdown">01:42</strong><span>未 ack 将升级到校级负责人</span></div></div>
+                  <div class="escalation"><h3>投递时间线</h3>
+                    <div class="step done"><i class="step-dot"></i><strong>值班室 Web + 本地声光</strong><span>23:14:10 · 已送达</span></div>
+                    <div class="step current"><i class="step-dot"></i><strong>值班员短信</strong><span>23:14:13 · 已送达，未确认</span></div>
+                    <div class="step"><i class="step-dot"></i><strong>校级负责人语音</strong><span>预计 23:16:10 · 尚未发送</span></div>
+                  </div>
+                </div>
+                <div class="disposition"><label for="outcome">处置结果</label><select class="select" id="outcome"><option value="">待选择</option><option>已现场核查，无人员受伤</option><option>已通知安保人员处理</option><option>已转交校方负责人</option></select><label for="note">处置备注</label><textarea class="textarea" id="note" placeholder="记录已采取的动作，不改写原始事件事实"></textarea><div class="disposition-actions"><button class="btn btn-danger" id="falsePositive">标记误报</button><button class="btn btn-success" id="completeAlert">完成处置</button></div></div>
+              </div>
+            </aside>
+          </div>
+        </section>
+
+        <section class="view" data-page="events">
+          <div class="page-head"><div><h1>事件中心</h1><p>事件是不可变事实；预警与处置结果作为关联记录单独展示。</p></div><div class="page-actions"><button class="btn"><svg class="icon"><use href="#i-download"/></svg>导出筛选结果</button></div></div>
+          <div class="grid stats">
+            <article class="card stat"><span>今日事件</span><strong>47</strong><span class="muted">较昨日 -8%</span></article><article class="card stat"><span>已触发预警</span><strong>18</strong><span class="muted">规则命中后独立创建</span></article><article class="card stat"><span>误报反馈</span><strong>5</strong><span class="muted">进入标注队列</span></article><article class="card stat"><span>证据可用率</span><strong>97.9%</strong><span class="muted">1 个片段可重试</span></article>
+          </div>
+          <article class="card"><div class="card-head"><div class="toolbar"><div class="search"><svg class="icon"><use href="#i-search"/></svg><input class="field" aria-label="搜索事件" placeholder="事件编号、点位或规则"></div><select class="select" aria-label="严重度筛选"><option>全部严重度</option><option>S1 高危</option><option>S2 重要</option></select><select class="select" aria-label="结果筛选"><option>全部结果</option><option>已处置</option><option>误报</option></select></div><span class="muted">共 47 条</span></div><div class="table-wrap"><table><thead><tr><th>事件编号</th><th>时间</th><th>点位</th><th>规则</th><th>事实</th><th>预警</th><th>结果</th><th>证据</th></tr></thead><tbody>
+            <tr><td class="mono">EVT-01J8…7A2</td><td>23:14:08</td><td>北围墙 01</td><td>非授权人员进入</td><td><span class="badge danger">已确认</span></td><td>Alert #1842</td><td>处置中</td><td><span class="badge success">可用</span></td></tr>
+            <tr><td class="mono">EVT-01J8…69P</td><td>22:48:31</td><td>宿舍东通道</td><td>区域聚集</td><td><span class="badge info">已记录</span></td><td>未触发</td><td>试运行样本</td><td><span class="badge success">可用</span></td></tr>
+            <tr><td class="mono">EVT-01J8…52C</td><td>22:19:04</td><td>实验楼入口</td><td>危险区域闯入</td><td><span class="badge danger">已确认</span></td><td>Alert #1839</td><td>误报</td><td><span class="badge warning">重试中</span></td></tr>
+          </tbody></table></div></article>
+        </section>
+
+        <section class="view" data-page="rules">
+          <div class="rule-context" id="ruleContext" hidden><p><strong>已带入摄像头上下文：</strong>北围墙 01 · 检测区域 ZONE-007，可继续完成规则草稿。</p><button class="btn btn-primary" id="continueRuleDraft">继续配置</button></div>
+          <div class="page-head"><div><h1>规则策略</h1><p>Bell 管理场景、范围、时段、持续时间、试运行与发布；检测区域来自对应摄像头的版本化空间配置。</p></div><div class="page-actions"><button class="btn btn-primary" id="openRuleDialog">新建规则</button></div></div>
+          <div class="grid rule-grid">
+            <article class="card rule-card"><div class="rule-card-top"><span class="badge success">正式生效</span><button class="btn btn-quiet icon-btn" aria-label="更多操作"><svg class="icon"><use href="#i-more"/></svg></button></div><h2>非授权人员进入</h2><p>危险区域 × 全天 × 持续 3 秒</p><dl><dt>覆盖范围</dt><dd>4 个点位</dd><dt>检测区域</dt><dd>北围墙危险区域 v7</dd><dt>继承来源</dt><dd>站点模板</dd><dt>今日命中</dt><dd>8</dd></dl><div class="rule-card-actions"><button class="btn" data-edit-rule>编辑规则</button><a class="btn" href="../sense/index.html?view=device-detail&amp;camera=CAM-S2-001&amp;return=bell-rule">校准检测区域</a></div></article>
+            <article class="card rule-card"><div class="rule-card-top"><span class="badge warning" id="trialBadge">试运行</span><button class="btn btn-quiet icon-btn" aria-label="更多操作"><svg class="icon"><use href="#i-more"/></svg></button></div><h2>区域内聚集</h2><p>人数 ≥ 6 × 持续 20 秒 × 夜间</p><dl><dt>覆盖范围</dt><dd>3 个点位</dd><dt>检测区域</dt><dd>3 个区域版本</dd><dt>继承来源</dt><dd>设备覆盖</dd><dt>样本命中</dt><dd>14</dd></dl><div class="rule-card-actions"><button class="btn" data-edit-rule>查看试运行</button><button class="btn btn-primary" id="publishTrialRule">正式发布</button></div></article>
             <article class="card rule-card"><div class="rule-card-top"><span class="badge violet">草稿</span><button class="btn btn-quiet icon-btn" aria-label="更多操作"><svg class="icon"><use href="#i-more"/></svg></button></div><h2>方向越线</h2><p>警戒线 A → B × 上学时段</p><dl><dt>覆盖范围</dt><dd>1 个点位</dd><dt>检测区域</dt><dd>宿舍东通道 · 警戒线 v3</dd><dt>继承来源</dt><dd>设备草稿</dd><dt>最近修改</dt><dd>2h 前</dd></dl><div class="rule-card-actions"><button class="btn" data-edit-rule>继续编辑</button><a class="btn" href="../sense/index.html?view=device-detail&amp;camera=CAM-S2-011&amp;return=bell-rule">查看警戒线</a></div></article>
           </div>
         </section>
@@ -337,4 +480,3 @@
   </script>
 </body>
 </html>
-

事件编号	时间	点位	规则	事实	预警	结果	证据
EVT-01J8…7A2	23:14:08	北围墙 01	非授权人员进入	已确认	Alert #1842	处置中	可用
EVT-01J8…69P	22:48:31	宿舍东通道	区域聚集	已记录	未触发	试运行样本	可用
EVT-01J8…52C	22:19:04	实验楼入口	危险区域闯入	已确认	Alert #1839	误报	重试中