diff --git a/site/demo.html b/site/demo.html
index e5f3983..4e05817 100644
--- a/site/demo.html
+++ b/site/demo.html
@@ -1,444 +1,518 @@
 <!DOCTYPE html>
-<html lang="zh-CN">
+<html lang="zh-CN" data-md-theme="auto">
 <head>
-<meta charset="UTF-8"/>
-<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
-<title>MetonaEditor · 功能演示</title>
+<meta charset="utf-8"/>
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<title>MetonaEditor v0.1.7 — 在线演示</title>
 <style>
-  * { box-sizing: border-box; margin: 0; padding: 0; }
+  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
   :root {
-    --bg: #f5f6f8;
-    --card: #ffffff;
-    --text: #1f2937;
-    --muted: #6b7280;
-    --border: #e5e7eb;
-    --accent: #3b82f6;
-    --accent-soft: rgba(59, 130, 246, 0.1);
-    --danger: #ef4444;
-    --success: #10b981;
-    --code-bg: #1c2029;
-    --code-text: #e6e8eb;
+    --app-bg: #f5f6f8;
+    --app-text: #1a1a2e;
+    --app-card: #ffffff;
+    --app-border: #e5e7eb;
+    --app-accent: #3b82f6;
+    --app-accent2: #8b5cf6;
+    
+    /* dark overrides */
+    --header-bg: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
+    --header-text: #f1f5f9;
+    --badge-bg: rgba(255,255,255,0.12);
+    --badge-text: #e2e8f0;
   }
+  [data-md-theme="dark"] {
+    --app-bg: #0f1117;
+    --app-text: #e2e8f0;
+    --app-card: #1a1d27;
+    --app-border: #2d3140;
+    --header-bg: linear-gradient(135deg, #0a0d15 0%, #161923 100%);
+  }
+
   body {
     font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
-    background: var(--bg);
-    color: var(--text);
+    background: var(--app-bg);
+    color: var(--app-text);
+    min-height: 100vh;
     line-height: 1.6;
-    padding: 24px;
+    transition: background 0.3s, color 0.3s;
   }
-  .wrap { max-width: 1120px; margin: 0 auto; }
 
-  /* 顶栏 */
-  .topbar {
-    display: flex; align-items: center; justify-content: space-between;
-    flex-wrap: wrap; gap: 12px;
-    margin-bottom: 20px;
+  /* ====== Header ====== */
+  .header {
+    background: var(--header-bg);
+    color: var(--header-text);
+    padding: 32px 24px 24px;
+    text-align: center;
+    position: relative;
+    overflow: hidden;
   }
-  .topbar h1 { font-size: 22px; font-weight: 700; display: flex; align-items: center; gap: 12px; }
-  .topbar h1 a {
-    color: var(--accent); text-decoration: none;
-    font-size: 13px; font-weight: 400;
-    padding: 4px 10px; border: 1px solid var(--border); border-radius: 6px;
-    transition: border-color 0.15s;
+  .header::before {
+    content: '';
+    position: absolute;
+    top: -60px; right: -60px;
+    width: 300px; height: 300px;
+    background: radial-gradient(circle, rgba(139,92,246,0.3) 0%, transparent 70%);
+    border-radius: 50%;
   }
-  .topbar h1 a:hover { border-color: var(--accent); }
-  .controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
-  .ctrl-label { font-size: 12px; color: var(--muted); margin-right: 4px; }
-  .ctrl-group {
-    display: inline-flex; gap: 0;
-    background: var(--card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
+  .header h1 {
+    font-size: 2rem;
+    font-weight: 800;
+    letter-spacing: -0.5px;
+    position: relative;
   }
-  .ctrl-btn {
-    padding: 7px 14px; border: 0; background: transparent; cursor: pointer;
-    font-size: 13px; color: var(--text); transition: background 0.15s, color 0.15s;
+  .header h1 span.grad {
+    background: linear-gradient(135deg, var(--app-accent), var(--app-accent2));
+    -webkit-background-clip: text;
+    -webkit-text-fill-color: transparent;
+    background-clip: text;
+  }
+  .header .badges {
+    display: flex;
+    gap: 10px;
+    justify-content: center;
+    flex-wrap: wrap;
+    margin-top: 14px;
+    position: relative;
+  }
+  .header .badge {
+    padding: 4px 12px;
+    border-radius: 20px;
+    font-size: 13px;
+    font-weight: 500;
+    background: var(--badge-bg);
+    color: var(--badge-text);
+    border: 1px solid rgba(255,255,255,0.1);
   }
-  .ctrl-btn:hover { background: #f3f4f6; }
-  .ctrl-btn.active { background: var(--accent); color: #fff; }
-  .ctrl-btn + .ctrl-btn { border-left: 1px solid var(--border); }
 
-  /* 编辑器 */
-  #editor { margin-bottom: 24px; border-radius: 10px; overflow: hidden; box-shadow: 0 4px 20px -8px rgba(0,0,0,0.1); }
+  /* ====== Toolbar Strip ====== */
+  .toolbar-strip {
+    display: flex;
+    align-items: center;
+    gap: 10px;
+    padding: 10px 24px;
+    background: var(--app-card);
+    border-bottom: 1px solid var(--app-border);
+    flex-wrap: wrap;
+    position: sticky;
+    top: 0;
+    z-index: 50;
+    transition: background 0.3s;
+  }
+  .toolbar-strip label {
+    font-size: 13px;
+    font-weight: 500;
+    color: var(--app-text);
+    opacity: 0.7;
+    white-space: nowrap;
+  }
+  .toolbar-strip select {
+    padding: 5px 10px;
+    border: 1px solid var(--app-border);
+    border-radius: 6px;
+    font-size: 13px;
+    background: var(--app-bg);
+    color: var(--app-text);
+    cursor: pointer;
+  }
+  .toolbar-strip button {
+    padding: 6px 14px;
+    border: 1px solid var(--app-border);
+    border-radius: 6px;
+    font-size: 13px;
+    font-weight: 500;
+    background: var(--app-card);
+    color: var(--app-text);
+    cursor: pointer;
+    transition: all 0.15s;
+    white-space: nowrap;
+  }
+  .toolbar-strip button:hover { background: var(--app-accent); color: #fff; border-color: var(--app-accent); }
+  .toolbar-strip button.accent { background: var(--app-accent); color: #fff; border-color: var(--app-accent); }
+  .toolbar-strip .spacer { flex: 1; }
 
-  /* 网格布局 */
-  .grid {
+  .toggle-group { display: flex; gap: 2px; }
+  .toggle-group button {
+    border-radius: 0;
+    margin: 0;
+  }
+  .toggle-group button:first-child { border-radius: 6px 0 0 6px; }
+  .toggle-group button:last-child { border-radius: 0 6px 6px 0; }
+  .toggle-group button.on { background: var(--app-accent); color: #fff; border-color: var(--app-accent); }
+
+  /* ====== Editor Container ====== */
+  .editor-section {
+    max-width: 1200px;
+    margin: 24px auto;
+    padding: 0 24px;
+  }
+  .editor-card {
+    border-radius: 12px;
+    overflow: hidden;
+    box-shadow: 0 4px 24px rgba(0,0,0,0.06);
+    background: var(--app-card);
+    border: 1px solid var(--app-border);
+    transition: box-shadow 0.3s, background 0.3s;
+  }
+  .editor-card:hover { box-shadow: 0 8px 36px rgba(0,0,0,0.1); }
+
+  /* ====== Info Cards ====== */
+  .info-grid {
     display: grid;
-    grid-template-columns: 1fr 1fr;
+    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
     gap: 16px;
-    margin-bottom: 16px;
+    max-width: 1200px;
+    margin: 24px auto;
+    padding: 0 24px;
   }
-  @media (max-width: 768px) {
-    .grid { grid-template-columns: 1fr; }
-  }
-
-  .panel {
-    background: var(--card);
-    border: 1px solid var(--border);
+  .info-card {
+    background: var(--app-card);
+    border: 1px solid var(--app-border);
     border-radius: 10px;
-    padding: 16px 18px;
-  }
-  .panel-title {
-    font-size: 13px; color: var(--muted);
-    margin-bottom: 10px; font-weight: 600;
-    display: flex; align-items: center; justify-content: space-between;
-  }
-  .panel-title .count {
-    background: var(--accent-soft); color: var(--accent);
-    padding: 2px 8px; border-radius: 999px; font-size: 11px;
+    padding: 18px 20px;
+    transition: box-shadow 0.3s;
   }
+  .info-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
+  .info-card .icon { font-size: 24px; margin-bottom: 8px; }
+  .info-card h4 { font-size: 14px; font-weight: 650; margin-bottom: 4px; }
+  .info-card p { font-size: 12px; color: var(--app-text); opacity: 0.65; margin: 0; }
 
-  /* 控制台 */
-  .console {
-    background: var(--code-bg); color: var(--code-text);
-    border-radius: 8px; padding: 14px 16px;
-    font-family: "SF Mono", "Cascadia Code", Consolas, monospace; font-size: 12.5px;
-    min-height: 140px; max-height: 240px; overflow: auto; white-space: pre-wrap; word-break: break-all;
-    line-height: 1.7;
+  /* ====== Footer ====== */
+  .footer {
+    text-align: center;
+    padding: 32px 24px;
+    font-size: 13px;
+    color: var(--app-text);
+    opacity: 0.5;
   }
-  .console:empty::before { content: "点击下方按钮查看输出..."; color: #6b7280; }
-  .console .log-time { color: #5c6370; }
-  .console .log-label { color: #82aaff; font-weight: 600; }
+  .footer a { color: var(--app-accent); text-decoration: none; }
 
-  /* 事件流 */
-  .events {
-    background: var(--code-bg); color: var(--code-text);
-    border-radius: 8px; padding: 14px 16px;
-    font-family: "SF Mono", Consolas, monospace; font-size: 12px;
-    min-height: 140px; max-height: 240px; overflow: auto;
-    line-height: 1.7;
+  /* ====== Responsive ====== */
+  @media (max-width: 768px) {
+    .header h1 { font-size: 1.5rem; }
+    .toolbar-strip { padding: 8px 12px; gap: 6px; }
+    .toolbar-strip button { padding: 5px 10px; font-size: 12px; }
+    .info-grid { grid-template-columns: 1fr 1fr; }
   }
-  .events:empty::before { content: "事件流将在这里实时显示..."; color: #6b7280; }
-  .event-line { padding: 2px 0; }
-  .event-line .ev-name { color: #c3e88d; }
-  .event-line .ev-time { color: #5c6370; }
-
-  /* API 按钮 */
-  .api-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
-    gap: 8px;
-    margin-top: 12px;
-  }
-  .api-btn {
-    padding: 9px 12px; border: 1px solid var(--border); background: var(--card);
-    border-radius: 7px; cursor: pointer; font-size: 12.5px; color: var(--text);
-    transition: all 0.15s; text-align: center; font-family: "SF Mono", Consolas, monospace;
-  }
-  .api-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
-  .api-btn:active { transform: translateY(0); }
-  .api-btn.danger:hover { border-color: var(--danger); color: var(--danger); }
-  .api-btn.success:hover { border-color: var(--success); color: var(--success); }
-
-  .hint {
-    font-size: 12px; color: var(--muted);
-    margin-top: 14px; padding: 10px 14px;
-    background: var(--accent-soft); border-radius: 8px;
-    border-left: 3px solid var(--accent);
-  }
-  code { background: #f3f4f6; padding: 1px 6px; border-radius: 4px; font-size: 12px; font-family: "SF Mono", Consolas, monospace; }
-
-  /* 状态指示 */
-  .status-bar {
-    display: flex; gap: 16px; flex-wrap: wrap;
-    padding: 10px 14px;
-    background: var(--card); border: 1px solid var(--border);
-    border-radius: 8px; margin-bottom: 16px;
-    font-size: 12px; color: var(--muted);
-  }
-  .status-item { display: inline-flex; align-items: center; gap: 6px; }
-  .status-item strong { color: var(--text); font-weight: 600; }
-  .status-dot {
-    width: 8px; height: 8px; border-radius: 50%;
-    background: var(--success);
-  }
-  .status-dot.destroyed { background: var(--danger); }
 </style>
 </head>
 <body>
-<div class="wrap">
-  <div class="topbar">
-	    <h1>
-	      MetonaEditor 功能演示
-	      <a href="index.html">← 返回首页</a>
-	      <a href="docs.html">📖 文档</a>
-	    </h1>
-	    <div class="controls">
-	      <span class="ctrl-label">主题</span>
-	      <div class="ctrl-group" id="themeCtrl">
-	        <button class="ctrl-btn" data-theme="light">亮色</button>
-	        <button class="ctrl-btn" data-theme="dark">暗色</button>
-	        <button class="ctrl-btn" data-theme="warm">暖色</button>
-	      </div>
-	      <span class="ctrl-label">语言</span>
-	      <div class="ctrl-group" id="localeCtrl">
-	        <button class="ctrl-btn" data-locale="zh-CN">中文</button>
-	        <button class="ctrl-btn" data-locale="en-US">English</button>
-	      </div>
-	      <span class="ctrl-label">模式</span>
-	      <div class="ctrl-group" id="readonlyCtrl">
-	        <button class="ctrl-btn" id="btnReadOnly">只读</button>
-	      </div>
-	    </div>
+
+<header class="header">
+  <h1><span class="grad">Metona</span>Editor</h1>
+  <div class="badges">
+    <span class="badge">v0.1.7</span>
+    <span class="badge">零依赖</span>
+    <span class="badge">532 tests</span>
+    <span class="badge">MIT</span>
+    <span class="badge">中文优先</span>
+  </div>
+</header>
+
+<div class="toolbar-strip" id="controlBar">
+  <label>主题</label>
+  <select id="themeSelect">
+    <option value="auto">🌓 跟随系统</option>
+    <option value="light">☀️ 亮色</option>
+    <option value="dark">🌙 暗色</option>
+    <option value="warm">🔥 暖色</option>
+  </select>
+
+  <label>语言</label>
+  <select id="localeSelect">
+    <option value="zh-CN">中文</option>
+    <option value="en-US">English</option>
+  </select>
+
+  <label>模式</label>
+  <div class="toggle-group" id="modeBtns">
+    <button data-mode="edit">编辑</button>
+    <button data-mode="split" class="on">分屏</button>
+    <button data-mode="preview">预览</button>
   </div>
 
-  <div class="status-bar" id="statusBar">
-    <div class="status-item">
-      <span class="status-dot" id="statusDot"></span>
-      <span>状态:</span><strong id="stState">运行中</strong>
-    </div>
-    <div class="status-item"><span>模式:</span><strong id="stMode">split</strong></div>
-    <div class="status-item"><span>主题:</span><strong id="stTheme">light</strong></div>
-    <div class="status-item"><span>语言:</span><strong id="stLocale">zh-CN</strong></div>
-    <div class="status-item"><span>字数:</span><strong id="stWords">0</strong></div>
-    <div class="status-item"><span>全屏:</span><strong id="stFs">否</strong></div>
+  <div class="spacer"></div>
+
+  <label>行号</label>
+  <div class="toggle-group" id="lineNumBtns">
+    <button class="on">开</button>
+    <button>关</button>
   </div>
 
-  <div id="editor"></div>
-
-  <div class="grid">
-    <div class="panel">
-      <div class="panel-title">
-        <span>API 控制台</span>
-        <span class="count" id="apiCount">0 次调用</span>
-      </div>
-      <div class="console" id="console"></div>
-      <div class="api-grid">
-        <button class="api-btn" data-api="getValue">getValue()</button>
-        <button class="api-btn" data-api="getHTML">getHTML()</button>
-        <button class="api-btn" data-api="getStats">getStats()</button>
-        <button class="api-btn" data-api="getStatus">getStatus()</button>
-        <button class="api-btn" data-api="insert">insert()</button>
-        <button class="api-btn" data-api="exec-bold">exec('bold')</button>
-        <button class="api-btn" data-api="exec-h1">exec('h1')</button>
-        <button class="api-btn" data-api="setMode-edit">编辑模式</button>
-        <button class="api-btn" data-api="setMode-split">分屏模式</button>
-        <button class="api-btn" data-api="setMode-preview">预览模式</button>
-        <button class="api-btn" data-api="fullscreen">切换全屏</button>
-        <button class="api-btn" data-api="undo">undo()</button>
-        <button class="api-btn" data-api="redo">redo()</button>
-        <button class="api-btn success" data-api="exportMD">导出 .md</button>
-        <button class="api-btn success" data-api="exportHTML">导出 .html</button>
-        <button class="api-btn" data-api="restoreDraft">恢复草稿</button>
-        <button class="api-btn" data-api="clearDraft">清空草稿</button>
-        <button class="api-btn" data-api="refresh">refresh()</button>
-        <button class="api-btn danger" data-api="destroy">destroy()</button>
-      </div>
-    </div>
-
-    <div class="panel">
-      <div class="panel-title">
-        <span>事件流（实时）</span>
-        <span class="count" id="evCount">0 个事件</span>
-      </div>
-      <div class="events" id="events"></div>
-    </div>
+  <label>大纲</label>
+  <div class="toggle-group" id="outlineBtns">
+    <button>开</button>
+    <button class="on">关</button>
   </div>
 
-  <div class="hint">
-    <strong>快捷键提示：</strong>
-    编辑区内按 <code>Ctrl+B</code> 加粗、<code>Ctrl+I</code> 斜体、<code>Ctrl+K</code> 插入链接、
-    <code>Ctrl+Z</code> 撤销、<code>Ctrl+S</code> 触发保存、<code>Ctrl+F</code> 查找、<code>Ctrl+H</code> 替换、
-    <code>Tab</code> 缩进、<code>Esc</code> 关闭面板。
+  <button onclick="demoToast()" title="演示 Toast 通知">💬 Toast</button>
+  <button onclick="demoOutline()" title="生成大纲">📋 大纲</button>
+</div>
+
+<div class="editor-section">
+  <div class="editor-card">
+    <div id="editor"></div>
   </div>
 </div>
 
+<div class="info-grid">
+  <div class="info-card">
+    <div class="icon">📝</div>
+    <h4>丰富语法</h4>
+    <p>数学公式、脚注、定义列表、嵌套列表、表格对齐、任务列表、Emoji</p>
+  </div>
+  <div class="info-card">
+    <div class="icon">⌨️</div>
+    <h4>快捷键</h4>
+    <p>Ctrl+B 粗体 · Ctrl+I 斜体 · Ctrl+S 保存 · Ctrl+F 搜索 · Ctrl+H 替换</p>
+  </div>
+  <div class="info-card">
+    <div class="icon">🎨</div>
+    <h4>4 套主题</h4>
+    <p>亮色 · 暗色 · 暖色 · 跟随系统，实例级隔离，外部主题跟随</p>
+  </div>
+  <div class="info-card">
+    <div class="icon">🔌</div>
+    <h4>4 个插件</h4>
+    <p>自动保存草稿 · 导出 MD/HTML · 搜索替换 · 图片粘贴</p>
+  </div>
+  <div class="info-card">
+    <div class="icon">🧩</div>
+    <h4>编辑增强</h4>
+    <p>行号装订线 · 智能 Enter · 括号自动闭合 · 拖放文件 · 大纲面板</p>
+  </div>
+  <div class="info-card">
+    <div class="icon">🛡️</div>
+    <h4>安全</h4>
+    <p>XSS 防护 · URL 协议过滤 · HTML 实体保护 · sanitize 钩子</p>
+  </div>
+</div>
+
+<footer class="footer">
+  MetonaEditor v0.1.7 ·
+  <a href="https://git.metona.cn/MetonaTeam/MetonaEditor" target="_blank" rel="noopener">源码仓库</a> ·
+  <a href="docs.html">API 文档</a> ·
+  MIT License
+</footer>
+
 <script src="../dist/metona-editor.js"></script>
 <script>
-  let apiCalls = 0;
-  let eventCount = 0;
+(function () {
+  const demoMd = [
+    '# 🚀 MetonaEditor 演示',
+    '',
+    '> 轻量、零依赖、精致美观的 **Markdown Editor** 库。',
+    '> 单文件，开箱即用，中文优先。',
+    '',
+    '## ✨ 核心特性',
+    '',
+    '- 零依赖 · 单文件打包 · UMD / ESM / CJS',
+    '- 三模式视图 · 分屏拖拽 · 滚动同步',
+    '- 行号装订线 · 当前行高亮',
+    '- 智能 Enter · 括号自动闭合',
+    '- 4 套主题 · 实例级隔离 · 外部跟随',
+    '- 插件系统 v2 · 依赖排序 · 异步加载',
+    '',
+    '## 📐 数学公式',
+    '',
+    '行内公式：爱因斯坦质能方程 $E = mc^2$',
+    '',
+    '块级公式：',
+    '$$',
+    '\\int_{0}^{\\infty} e^{-x^2} dx = \\frac{\\sqrt{\\pi}}{2}',
+    '$$',
+    '',
+    '## 📋 表格与对齐',
+    '',
+    '| 版本 | 日期 | 测试数 |',
+    '| :--- | :---: | ---: |',
+    '| v0.1.7 | 2026-07 | 532+ |',
+    '| v0.1.6 | 2026-07 | 521 |',
+    '| v0.1.5 | 2026-07 | 499 |',
+    '',
+    '## ✅ 任务列表',
+    '',
+    '- [x] 解析器增强（11 项新语法）',
+    '- [x] 主题系统（实例隔离 + 外部跟随）',
+    '- [x] 插件 v2 + i18n 增强',
+    '- [x] 编辑体验（行号 / 自动格式化 / 括号闭合）',
+    '- [ ] 更多语言翻译包',
+    '- [ ] VS Code 插件',
+    '',
+    '## 🎯 嵌套列表',
+    '',
+    '1. 一级有序',
+    '   1. 二级有序',
+    '   2. 二级第二项',
+    '2. 回到一级',
+    '   - 混杂无序',
+    '   - 第二项',
+    '     - 三级嵌套',
+    '',
+    '## 📖 定义列表',
+    '',
+    'MetonaEditor',
+    ': 一款轻量、零依赖的中文优先 Markdown 编辑器库。',
+    ': 支持 CommonMark + GFM 扩展语法。',
+    '',
+    'Markdown',
+    ': 由 John Gruber 创建的轻量级标记语言。',
+    '',
+    '## 🔗 链接与图片',
+    '',
+    '访问 [MetonaEditor 仓库](https://git.metona.cn/MetonaTeam/MetonaEditor \'点击访问源码\')',
+    '',
+    '图片示例：![示例](https://placehold.co/400x120/3b82f6/white?text=MetonaEditor)',
+    '',
+    '## 💻 代码块',
+    '',
+    '```js',
+    'import MeEditor from \'@metona-team/metona-editor\';',
+    '',
+    'const editor = MeEditor.create(\'#editor\', {',
+    '  value: \'# Hello World\',',
+    '  mode: \'split\',',
+    '  lineNumbers: true,',
+    '  autoBrackets: true,',
+    '  plugins: [\'autoSave\', \'searchReplace\'],',
+    '  onChange: (value) => console.log(value),',
+    '});',
+    '```',
+    '',
+    '## 🎨 文本样式',
+    '',
+    '- **粗体文本** 与 __另一种粗体__',
+    '- *斜体文本* 与 _另一种斜体_',
+    '- ~~删除线~~ 与 ==高亮标记==',
+    '- 化学式：H~2~O 与 数学：x^2^ + y^2^ = z^2^',
+    '- 行内代码：`const x = 42;`',
+    '- Emoji：:smile: :rocket: :fire: :tada: :rainbow: :coffee:',
+    '',
+    '## 📌 脚注',
+    '',
+    '这是一个带脚注的句子[^1]，这是另一个脚注[^note]。',
+    '',
+    '[^1]: 第一个脚注的详细说明内容。',
+    '[^note]: 脚注可以包含 **格式化** 和 `代码`。',
+    '',
+    '---',
+    '',
+    '> **提示：** 试试拖放图片到编辑器、按 `Ctrl+F` 搜索、`Ctrl+H` 替换、',
+    '> 在列表行尾按 `Enter` 体验智能延续、选中文字后输入 `(` 体验自动包裹。',
+  ].join('\n');
 
-  const log = (label, val) => {
-    apiCalls++;
-    document.getElementById('apiCount').textContent = apiCalls + ' 次调用';
-    const c = document.getElementById('console');
-    const now = new Date().toLocaleTimeString('zh-CN', { hour12: false });
-    const text = typeof val === 'string' ? val : JSON.stringify(val, null, 2);
-    const truncated = text.length > 500 ? text.slice(0, 500) + '\n... (已截断)' : text;
-    c.innerHTML = `<span class="log-time">[${now}]</span> <span class="log-label">${label}</span>\n${escapeHtml(truncated)}`;
-  };
-
-  const logEvent = (name, data) => {
-    eventCount++;
-    document.getElementById('evCount').textContent = eventCount + ' 个事件';
-    const el = document.getElementById('events');
-    const now = new Date().toLocaleTimeString('zh-CN', { hour12: false });
-    const dataStr = data !== undefined ? ' ' + (typeof data === 'string' ? data.slice(0, 40) : JSON.stringify(data).slice(0, 40)) : '';
-    const line = document.createElement('div');
-    line.className = 'event-line';
-    line.innerHTML = `<span class="ev-time">${now}</span> <span class="ev-name">${name}</span>${escapeHtml(dataStr)}`;
-    el.appendChild(line);
-    el.scrollTop = el.scrollHeight;
-    // 限制最多 50 条
-    while (el.children.length > 50) el.removeChild(el.firstChild);
-  };
-
-  function escapeHtml(s) {
-    return String(s).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
-  }
-
-  function updateStatus() {
-    if (editor.isDestroyed()) {
-      document.getElementById('stState').textContent = '已销毁';
-      document.getElementById('statusDot').classList.add('destroyed');
-      return;
-    }
-    const s = editor.getStatus();
-    const stats = editor.getStats();
-    document.getElementById('stState').textContent = '运行中';
-    document.getElementById('stMode').textContent = s.mode;
-    document.getElementById('stTheme').textContent = s.theme;
-    document.getElementById('stLocale').textContent = s.locale;
-    document.getElementById('stWords').textContent = stats.words;
-    document.getElementById('stFs').textContent = s.fullscreen ? '是' : '否';
-  }
-
-  // 创建编辑器，启用全部预设插件
-  const editor = MeEditor.create('#editor', {
+  const editor = window.MeEditor.create('#editor', {
+    value: demoMd,
     mode: 'split',
-    height: 420,
-    theme: 'light',
+    height: 620,
+    lineNumbers: true,
+    autoBrackets: true,
+    wordCount: true,
+    outline: false,
+    theme: 'auto',
     locale: 'zh-CN',
-    value: [
-      '# 功能演示',
-      '',
-      '这里是 MetonaEditor 的完整功能演示。',
-      '',
-      '## 行内格式',
-      '',
-      '- 支持 **加粗**、*斜体*、~~删除线~~、`行内代码`',
-      '- 高亮 ==重点标记== 、上标 x^2^、下标 H~2~O',
-      '- Emoji 短码 :smile: :rocket: :fire: :tada:',
-      '- 支持 [链接](https://example.com) 与 ![图片](https://placehold.co/100)',
-      '',
-      '## 表格',
-      '',
-      '| 名称 | 值 |',
-      '| --- | --- |',
-      '| 版本 | 0.1.7 |',
-      '| 依赖 | 零 |',
-      '| 测试 | 532+ |',
-      '',
-      '## 新增语法',
-      '',
-      '### 数学公式',
-      '',
-      '- 行内：$E=mc^2$',
-      '- 块级：$$\\int_0^\\infty e^{-x}dx$$',
-      '',
-      '### 嵌套列表',
-      '',
-      '- 一级',
-      '  - 二级',
-      '    - 三级',
-      '',
-      '### 脚注',
-      '',
-      '这是带脚注的文字[^1]',
-      '',
-      '[^1]: 这是脚注内容',
-      '',
-      '### 定义列表',
-      '',
-      'Markdown',
-      ': 一种轻量级标记语言。',
-      ': 由 John Gruber 创建。',
-      '',
-      '## 任务列表',
-      '',
-      '- [x] 分屏预览',
-      '- [x] 插件系统',
-      '- [x] 主题与国际化',
-      '- [ ] 你的创意',
-      '',
-      '## 代码块',
-      '',
-      '```js',
-      'function hello(name) {',
-      '  return `Hello, ${name}!`;',
-      '}',
-      '```',
-      '',
-      '> 试试顶部的主题/语言切换与下方的 API 按钮。',
-      '',
-      '右侧事件流会实时显示编辑器触发的事件。'
-    ].join('\n'),
     plugins: ['autoSave', 'exportTool', 'searchReplace', 'imagePaste'],
-    onChange: (val) => { logEvent('change', val); updateStatus(); },
-    onInput: (val) => logEvent('input', val),
-    onFocus: () => logEvent('focus'),
-    onBlur: () => logEvent('blur'),
-    onSave: () => logEvent('save'),
-    onModeChange: (mode) => { logEvent('modeChange', mode); updateStatus(); },
-    onFullscreen: (fs) => { logEvent('fullscreen', fs); updateStatus(); },
   });
 
-  // 监听 autosave 事件（来自 autoSave 插件）
-  editor.on('autosave', (data) => logEvent('autosave', data));
+  // ====== Control Bar Handlers ======
 
-  // 主题切换
-  document.getElementById('themeCtrl').addEventListener('click', (e) => {
-    const btn = e.target.closest('[data-theme]');
-    if (!btn) return;
-    document.querySelectorAll('#themeCtrl .ctrl-btn').forEach(b => b.classList.remove('active'));
-    btn.classList.add('active');
-    MeEditor.setTheme(btn.dataset.theme);
-    editor.el.className = editor.el.className.replace(/me-theme-\w+/g, '') + ' me-theme-' + btn.dataset.theme;
-    updateStatus();
-  });
-  document.querySelector('#themeCtrl [data-theme="light"]').classList.add('active');
-
-  // 语言切换
-  document.getElementById('localeCtrl').addEventListener('click', (e) => {
-    const btn = e.target.closest('[data-locale]');
-    if (!btn) return;
-    document.querySelectorAll('#localeCtrl .ctrl-btn').forEach(b => b.classList.remove('active'));
-    btn.classList.add('active');
-    MeEditor.setLocale(btn.dataset.locale);
-    updateStatus();
-  });
-  document.querySelector('#localeCtrl [data-locale="zh-CN"]').classList.add('active');
-
-  // 只读切换
-  document.getElementById('btnReadOnly').addEventListener('click', () => {
-    const isRO = editor.isReadOnly();
-    editor.setReadOnly(!isRO);
-    document.getElementById('btnReadOnly').classList.toggle('active', !isRO);
-    document.getElementById('btnReadOnly').textContent = !isRO ? '只读中' : '只读';
-    log('setReadOnly', String(!isRO));
-    updateStatus();
+  // Theme
+  document.getElementById('themeSelect').addEventListener('change', function () {
+    editor.setTheme(this.value);
   });
 
-  // API 控制台
-  document.querySelector('.api-grid').addEventListener('click', (e) => {
-    const btn = e.target.closest('[data-api]');
-    if (!btn) return;
-    const api = btn.dataset.api;
-    if (editor.isDestroyed()) { log('error', '编辑器已销毁，请刷新页面'); return; }
-    switch (api) {
-      case 'getValue': log('getValue', editor.getValue().slice(0, 200) + '...'); break;
-      case 'getHTML': log('getHTML', editor.getHTML()); break;
-      case 'getStats': log('getStats', editor.getStats()); break;
-      case 'getStatus': log('getStatus', editor.getStatus()); break;
-      case 'insert': editor.insert('\n\n## 新插入的标题\n'); log('insert', '已插入内容'); break;
-      case 'exec-bold': editor.exec('bold'); log('exec', "执行 'bold'"); break;
-      case 'exec-h1': editor.exec('h1'); log('exec', "执行 'h1'"); break;
-      case 'setMode-edit': editor.setMode('edit'); log('setMode', '切换到 edit'); break;
-      case 'setMode-split': editor.setMode('split'); log('setMode', '切换到 split'); break;
-      case 'setMode-preview': editor.setMode('preview'); log('setMode', '切换到 preview'); break;
-      case 'fullscreen': editor.toggleFullscreen(); log('fullscreen', '已切换全屏'); break;
-      case 'undo': editor.undo(); log('undo', '撤销'); break;
-      case 'redo': editor.redo(); log('redo', '重做'); break;
-      case 'exportMD': editor.exportMarkdown(); log('export', '已触发 .md 下载'); break;
-      case 'exportHTML': editor.exportHTML('demo.html', { title: 'MetonaEditor 导出' }); log('export', '已触发 .html 下载'); break;
-      case 'restoreDraft': editor.restoreDraft(); log('restoreDraft', '已从 localStorage 恢复草稿'); break;
-      case 'clearDraft': editor.clearDraft(); log('clearDraft', '已清空草稿'); break;
-      case 'refresh': editor.refresh(); log('refresh', '强制刷新预览'); break;
-      case 'destroy': editor.destroy(); log('destroy', '编辑器已销毁'); updateStatus(); break;
+  // Locale
+  document.getElementById('localeSelect').addEventListener('change', function () {
+    editor.setLocale(this.value);
+  });
+
+  // Mode buttons
+  document.querySelectorAll('#modeBtns button').forEach(function (btn) {
+    btn.addEventListener('click', function () {
+      editor.setMode(this.dataset.mode);
+      document.querySelectorAll('#modeBtns button').forEach(function (b) { b.classList.remove('on'); });
+      this.classList.add('on');
+    });
+  });
+
+  // Line numbers toggle
+  var lineNumBtns = document.querySelectorAll('#lineNumBtns button');
+  lineNumBtns[0].addEventListener('click', function () {
+    editor.config.lineNumbers = true;
+    if (editor.gutter) editor.gutter.style.display = '';
+    editor._renderGutter();
+    lineNumBtns[0].classList.add('on');
+    lineNumBtns[1].classList.remove('on');
+  });
+  lineNumBtns[1].addEventListener('click', function () {
+    editor.config.lineNumbers = false;
+    if (editor.gutter) editor.gutter.style.display = 'none';
+    lineNumBtns[1].classList.add('on');
+    lineNumBtns[0].classList.remove('on');
+  });
+
+  // Outline toggle
+  var outlineBtns = document.querySelectorAll('#outlineBtns button');
+  outlineBtns[0].addEventListener('click', function () {
+    editor.config.outline = true;
+    editor._buildOutline();
+    outlineBtns[0].classList.add('on');
+    outlineBtns[1].classList.remove('on');
+  });
+  outlineBtns[1].addEventListener('click', function () {
+    editor.config.outline = false;
+    var panel = editor.el.querySelector('.me-outline');
+    if (panel) panel.remove();
+    outlineBtns[1].classList.add('on');
+    outlineBtns[0].classList.remove('on');
+  });
+
+  // Toast demo
+  window.demoToast = function () {
+    var types = ['success', 'error', 'warning', 'info'];
+    var type = types[Math.floor(Math.random() * types.length)];
+    var messages = {
+      success: '✅ 内容已自动保存',
+      error: '❌ 操作失败，请重试',
+      warning: '⚠️ 有未保存的更改',
+      info: 'ℹ️ 这是来自插件系统的通知',
+    };
+    editor.toast(messages[type], { type: type, duration: 2500 });
+  };
+
+  // Outline demo
+  window.demoOutline = function () {
+    if (editor.config.outline) {
+      editor.config.outline = false;
+      var panel = editor.el.querySelector('.me-outline');
+      if (panel) panel.remove();
+      outlineBtns[0].classList.remove('on');
+      outlineBtns[1].classList.add('on');
+    } else {
+      editor.config.outline = true;
+      editor._buildOutline();
+      outlineBtns[0].classList.add('on');
+      outlineBtns[1].classList.remove('on');
     }
+  };
+
+  // Register custom shortcut
+  editor.registerShortcut('Ctrl+Shift+T', function () {
+    editor.toast('快捷键 Ctrl+Shift+T 已触发！', { type: 'info' });
+  }, 'Toast test');
+
+  // Listen for theme change to update select
+  editor.on('themeChange', function (data) {
+    document.getElementById('themeSelect').value = data.theme;
   });
 
-  // 初始状态
-  updateStatus();
-  logEvent('ready', '编辑器已就绪');
+  // Sync editor mode button state
+  editor.on('modeChange', function (mode) {
+    document.querySelectorAll('#modeBtns button').forEach(function (b) {
+      b.classList.toggle('on', b.dataset.mode === mode);
+    });
+  });
+
+})();
 </script>
 </body>
 </html>
