diff --git a/web/static/admin.html b/web/static/admin.html
index 5e7564c..e811e64 100644
--- a/web/static/admin.html
+++ b/web/static/admin.html
@@ -6,59 +6,94 @@
 <title>zcbot 管理后台</title>
 <style>
   :root {
-    --bg: #f7f7f7; --panel: #ffffff; --border: #e3e3e3; --border-soft: #ececec;
-    --text: #222; --muted: #888; --accent: #c0392b; --accent-soft: #fde9e7;
-    --ok: #2e7d32; --warn: #c87f0a; --danger: #c0392b;
-    --r-md: 4px; --r-lg: 8px;
+    color-scheme: light;
+    --bg: #f4f6f8; --panel: #ffffff; --panel-soft: #f8fafb;
+    --border: #dfe3e7; --border-soft: #edf0f2;
+    --text: #202428; --text-strong: #121619; --muted: #70777f;
+    --accent: #b83a31; --accent-hover: #a9322a; --accent-soft: #fbecea;
+    --accent-ring: rgba(184,58,49,.16);
+    --ok: #238653; --warn: #b66a16; --danger: #b83a31;
+    --r-md: 6px; --r-lg: 12px;
+    --shadow-soft: 0 1px 2px rgba(18,24,30,.04), 0 8px 24px rgba(18,24,30,.035);
     --mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, monospace;
   }
   * { box-sizing: border-box; }
   body {
     margin: 0; font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
-    color: var(--text); background: var(--bg); font-size: 13px; line-height: 1.5;
+    color: var(--text); background: var(--bg); font-size: 13px; line-height: 1.55;
+    -webkit-font-smoothing: antialiased;
   }
   header {
-    position: sticky; top: 0; z-index: 10; background: #fff;
-    border-bottom: 1px solid var(--border); box-shadow: 0 1px 2px rgba(0,0,0,.03);
-    display: flex; align-items: center; gap: 12px; padding: 10px 16px; flex-wrap: wrap;
+    position: sticky; top: 0; z-index: 10; min-height: 64px;
+    background: rgba(255,255,255,.94); backdrop-filter: blur(12px);
+    border-bottom: 1px solid var(--border); box-shadow: 0 1px 0 rgba(18,24,30,.02);
+    display: flex; align-items: center; gap: 16px; padding: 10px max(20px, calc((100vw - 1480px) / 2));
   }
+  header .brand { display: flex; align-items: center; gap: 11px; min-width: 0; }
   header .logo {
-    width: 24px; height: 24px; border-radius: var(--r-md);
+    width: 34px; height: 34px; flex: 0 0 auto; border-radius: 9px;
     background: linear-gradient(135deg, var(--accent), #8e2a20);
-    color: #fff; font-weight: 700; font-size: 13px;
+    box-shadow: 0 5px 14px rgba(184,58,49,.22);
+    color: #fff; font-weight: 750; font-size: 15px;
     display: flex; align-items: center; justify-content: center;
   }
-  header .title { font-weight: 600; font-size: 15px; }
+  header .brand-copy { min-width: 0; }
+  header .title { color: var(--text-strong); font-weight: 650; font-size: 15px; line-height: 1.25; }
+  header .eyebrow { margin-top: 1px; color: var(--muted); font-size: 10px; letter-spacing: .7px; text-transform: uppercase; }
   header .spacer { flex: 1; }
   header .meta { color: var(--muted); font-size: 12px; font-family: var(--mono); }
+  header .actions { display: flex; align-items: center; gap: 7px; }
   header a, header button {
-    font-size: 12px; color: var(--accent); text-decoration: none;
-    padding: 4px 10px; border: 1px solid var(--accent-soft); border-radius: var(--r-md);
-    background: #fff; cursor: pointer;
+    min-height: 32px; display: inline-flex; align-items: center; justify-content: center;
+    font-size: 12px; font-weight: 550; color: var(--text); text-decoration: none;
+    padding: 5px 11px; border: 1px solid var(--border); border-radius: var(--r-md);
+    background: #fff; cursor: pointer; transition: .15s ease;
   }
-  header a:hover, header button:hover { background: var(--accent-soft); }
-  header label.auto { color: var(--muted); display: flex; align-items: center; gap: 4px; cursor: pointer; }
+  header a:hover, header button:hover { border-color: #c8cdd2; background: var(--panel-soft); color: var(--accent); }
+  header a { color: var(--accent); border-color: #edcfcc; }
+  header label.auto { color: var(--muted); display: flex; align-items: center; gap: 6px; padding: 0 4px; cursor: pointer; white-space: nowrap; }
+  input[type="checkbox"] { accent-color: var(--accent); }
 
-  main { padding: 16px; max-width: 1200px; margin: 0 auto; }
+  main { padding: 28px 24px 48px; max-width: 1480px; margin: 0 auto; }
   .msg { padding: 40px 16px; text-align: center; color: var(--muted); }
   .msg a { color: var(--accent); }
 
   /* 目录 + 内容两栏;目录 sticky 跟随滚动 */
-  #layout { display: grid; grid-template-columns: 132px 1fr; gap: 18px; align-items: start; }
-  #toc { position: sticky; top: 64px; display: flex; flex-direction: column; gap: 2px; }
-  #toc a {
-    color: var(--muted); text-decoration: none; font-size: 13px; padding: 6px 10px;
-    border-radius: var(--r-md); border-left: 2px solid transparent;
+  #layout { display: grid; grid-template-columns: 196px minmax(0, 1fr); gap: 24px; align-items: start; }
+  #toc {
+    position: sticky; top: 88px; display: flex; flex-direction: column; gap: 3px;
+    padding: 10px; background: rgba(255,255,255,.76); border: 1px solid var(--border);
+    border-radius: var(--r-lg); box-shadow: var(--shadow-soft);
   }
-  #toc a:hover { background: var(--accent-soft); color: var(--accent); }
-  #toc a.active { color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); font-weight: 600; }
-  .anchor { scroll-margin-top: 64px; }  /* 滚动定位避开 sticky 顶栏 */
+  #toc .toc-label { padding: 5px 10px 8px; color: #959ba1; font-size: 10px; font-weight: 700; letter-spacing: 1px; }
+  #toc a {
+    display: flex; align-items: center; gap: 9px; min-height: 36px;
+    color: var(--muted); text-decoration: none; font-size: 12px; padding: 7px 10px;
+    border-radius: 7px; border: 1px solid transparent; transition: .15s ease;
+  }
+  #toc .nav-index { width: 20px; color: #a0a6ac; font: 10px/1 var(--mono); }
+  #toc a:hover { background: var(--panel-soft); color: var(--text-strong); }
+  #toc a.active { color: var(--accent); border-color: #f0d5d2; background: var(--accent-soft); font-weight: 650; }
+  #toc a.active .nav-index { color: var(--accent); }
+  #content { min-width: 0; }
+  .page-intro {
+    position: relative; overflow: hidden; margin-bottom: 18px; padding: 22px 24px;
+    border: 1px solid #e6d9d7; border-radius: var(--r-lg);
+    background: linear-gradient(120deg, #fff 0%, #fff 54%, #fdf4f2 100%); box-shadow: var(--shadow-soft);
+  }
+  .page-intro::after {
+    content: ""; position: absolute; right: -70px; top: -90px; width: 220px; height: 220px;
+    border: 42px solid rgba(184,58,49,.055); border-radius: 50%; pointer-events: none;
+  }
+  .page-intro h1 { position: relative; margin: 0; color: var(--text-strong); font-size: 20px; line-height: 1.35; }
+  .page-intro p { position: relative; margin: 6px 0 0; color: var(--muted); font-size: 12px; }
+  .anchor { scroll-margin-top: 82px; }
 
   .card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
   .card-head h2 { margin: 0; }
   .ctrl { display: flex; gap: 6px; }
   .ctrl select {
-    font-size: 12px; padding: 3px 6px; border: 1px solid var(--border);
+    min-height: 32px; font-size: 12px; padding: 4px 28px 4px 9px; border: 1px solid var(--border);
     border-radius: var(--r-md); background: #fff; color: var(--text);
   }
   .sublabel { color: var(--muted); font-size: 11px; margin-bottom: 4px; }
@@ -66,18 +101,21 @@
   .grid { display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
   .card {
     background: var(--panel); border: 1px solid var(--border); border-radius: var(--r-lg);
-    padding: 14px 16px; margin-bottom: 14px;
+    padding: 18px 20px; margin-bottom: 16px; box-shadow: var(--shadow-soft);
   }
-  .card h2 { margin: 0 0 10px; font-size: 13px; color: var(--muted); font-weight: 600; letter-spacing: .3px; }
+  .card h2 { margin: 0 0 13px; font-size: 13px; color: var(--text-strong); font-weight: 650; letter-spacing: .15px; }
 
   /* 大数字 stat 块 */
-  .stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--r-lg); padding: 12px 14px; }
+  .stat { position: relative; overflow: hidden; min-height: 102px; background: linear-gradient(145deg,#fff,var(--panel-soft)); border: 1px solid var(--border-soft); border-radius: 10px; padding: 14px 16px; }
+  .stat::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 3px; background: #d9dde1; }
   .stat .k { color: var(--muted); font-size: 12px; }
-  .stat .v { font-size: 22px; font-weight: 600; font-family: var(--mono); margin-top: 4px; }
+  .stat .v { color: var(--text-strong); font-size: 23px; font-weight: 650; font-family: var(--mono); margin-top: 7px; letter-spacing: -.5px; }
   .stat .sub { color: var(--muted); font-size: 11px; margin-top: 2px; }
-  .stat.warn { border-color: var(--warn); background: #fff8ec; }
+  .stat.warn { border-color: #efd8b7; background: #fffaf2; }
+  .stat.warn::before { background: var(--warn); }
   .stat.warn .v { color: var(--warn); }
-  .stat.danger { border-color: var(--danger); background: var(--accent-soft); }
+  .stat.danger { border-color: #edc1bd; background: var(--accent-soft); }
+  .stat.danger::before { background: var(--danger); }
   .stat.danger .v { color: var(--danger); }
 
   /* chips(状态分布) */
@@ -91,10 +129,14 @@
   .chip.run { background: #e7f3ff; color: #1565c0; }
   .chip.ok { background: #e8f5e9; color: var(--ok); }
 
-  table { width: 100%; border-collapse: collapse; font-size: 12px; }
-  th, td { padding: 6px 8px; text-align: right; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
+  table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 12px; }
+  th, td { padding: 9px 10px; text-align: right; border-bottom: 1px solid var(--border-soft); white-space: nowrap; }
   th:first-child, td:first-child { text-align: left; }
-  th { color: var(--muted); font-weight: 600; }
+  th { color: var(--muted); background: var(--panel-soft); font-weight: 600; }
+  thead th:first-child { border-radius: 7px 0 0 7px; }
+  thead th:last-child { border-radius: 0 7px 7px 0; }
+  tbody tr { transition: background-color .12s ease; }
+  tbody tr:hover { background: #fafbfc; }
   td.num { font-family: var(--mono); }
   td.num.hot { color: var(--danger); font-weight: 700; }
   td.trend { font-family: var(--mono); letter-spacing: 1px; color: var(--accent); }
@@ -102,7 +144,7 @@
   td.email { font-family: var(--mono); max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
   .bar-cell { position: relative; }
   tfoot .total-row td { border-top: 2px solid var(--border); border-bottom: none; font-weight: 700; }
-  .scroll-x { overflow-x: auto; }
+  .scroll-x { overflow-x: auto; scrollbar-color: #cbd1d6 transparent; scrollbar-width: thin; }
   .empty { color: var(--muted); padding: 8px; text-align: center; }
   #ext-admin-form label { display: grid; gap: 3px; color: var(--muted); font-size: 12px; }
   #ext-admin-form [hidden] { display: none; }
@@ -236,22 +278,31 @@
 
   .pager { display: flex; align-items: center; gap: 12px; justify-content: flex-end; margin-top: 10px; }
   .pager button {
-    font-size: 12px; padding: 4px 12px; border: 1px solid var(--border); border-radius: var(--r-md);
+    min-height: 32px; font-size: 12px; padding: 4px 12px; border: 1px solid var(--border); border-radius: var(--r-md);
     background: #fff; cursor: pointer; color: var(--text);
   }
   .pager button:hover:not(:disabled) { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
   .pager button:disabled { opacity: .45; cursor: default; }
   .pager .pginfo { color: var(--muted); font-size: 12px; font-family: var(--mono); }
 
-  @media (max-width: 640px) {
+  button, select, input, textarea { font: inherit; }
+  button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible, textarea:focus-visible {
+    outline: 2px solid var(--accent); outline-offset: 2px;
+  }
+  select:focus, input:focus, textarea:focus { border-color: var(--accent) !important; box-shadow: 0 0 0 3px var(--accent-ring); outline: none; }
+
+  @media (max-width: 820px) {
     main { padding: 10px; }
     .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
     .stat .v { font-size: 18px; }
     /* header 紧凑化:缩 padding/gap、字号,gen-at 时间戳截断不撑宽 */
-    header { padding: 8px 10px; gap: 8px; }
+    header { padding: 8px 10px; gap: 8px; flex-wrap: wrap; }
     header .title { font-size: 14px; }
+    header .eyebrow { display: none; }
     header .meta { font-size: 11px; max-width: 150px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
     header a, header button { padding: 4px 8px; }
+    header .actions { order: 3; width: 100%; overflow-x: auto; padding-bottom: 1px; }
+    header .actions > * { flex: 0 0 auto; }
     /* card-head 允许换行,标题长 + 下拉不再撑出横向溢出 */
     .card-head { flex-wrap: wrap; }
     .ctrl { flex-wrap: wrap; }
@@ -262,12 +313,21 @@
     /* 窄屏:目录变顶部横向 chip 条 */
     #layout { grid-template-columns: 1fr; gap: 10px; }
     #toc {
-      flex-direction: row; overflow-x: auto; gap: 6px; top: 52px;
-      background: var(--bg); padding: 6px 0; z-index: 5;
+      flex-direction: row; overflow-x: auto; gap: 6px; top: 109px;
+      background: rgba(244,246,248,.94); backdrop-filter: blur(8px); padding: 6px 0; z-index: 5;
+      border: 0; border-radius: 0; box-shadow: none;
     }
-    #toc a { white-space: nowrap; border-left: none; border: 1px solid var(--border); }
+    #toc .toc-label, #toc .nav-index { display: none; }
+    #toc a { min-height: 32px; white-space: nowrap; border: 1px solid var(--border); background: #fff; }
     #toc a.active { border-color: var(--accent); }
-    .anchor { scroll-margin-top: 96px; }
+    .page-intro { padding: 18px; }
+    .page-intro h1 { font-size: 18px; }
+    .anchor { scroll-margin-top: 150px; }
+    .card { padding: 15px; }
+  }
+
+  @media (prefers-reduced-motion: reduce) {
+    *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
   }
 
   /* 屏幕上隐藏打印报告;打印时只显它 */
@@ -290,14 +350,21 @@
 </head>
 <body>
 <header>
-  <div class="logo">Z</div>
-  <div class="title">zcbot 管理后台</div>
+  <div class="brand">
+    <div class="logo">Z</div>
+    <div class="brand-copy">
+      <div class="title">zcbot 管理后台</div>
+      <div class="eyebrow">Operations Console</div>
+    </div>
+  </div>
   <span class="meta" id="gen-at"></span>
   <div class="spacer"></div>
-  <label class="auto"><input type="checkbox" id="auto-refresh" checked /> 自动刷新</label>
-  <button id="refresh">刷新</button>
-  <button id="export">导出 PDF</button>
-  <a href="/static/dev.html">← 返回控制台</a>
+  <div class="actions">
+    <label class="auto"><input type="checkbox" id="auto-refresh" checked /> 自动刷新</label>
+    <button id="refresh">刷新数据</button>
+    <button id="export">导出 PDF</button>
+    <a href="/static/dev.html">返回控制台</a>
+  </div>
 </header>
 <main id="main">
   <div class="msg" id="boot">加载中…</div>
diff --git a/web/static/js/admin.js b/web/static/js/admin.js
index a1644e5..307ed8a 100644
--- a/web/static/js/admin.js
+++ b/web/static/js/admin.js
@@ -899,9 +899,10 @@ function wirePager(prefix, page, maxPage, go) {
 function ensureSkeleton() {
   if ($("layout")) return;
   $("main").innerHTML = `<div id="layout">`
-    + `<nav id="toc">` + SECTIONS.map(([id, label]) =>
-        `<a href="#${id}" data-target="${id}">${label}</a>`).join("") + `</nav>`
-    + `<div id="content">` + SECTIONS.map(([id]) =>
+    + `<nav id="toc" aria-label="管理后台导航"><div class="toc-label">管理模块</div>` + SECTIONS.map(([id, label], index) =>
+        `<a href="#${id}" data-target="${id}"><span class="nav-index">${String(index + 1).padStart(2, "0")}</span><span>${label}</span></a>`).join("") + `</nav>`
+    + `<div id="content"><section class="page-intro"><h1>系统运行概览</h1>`
+    + `<p>集中查看服务状态、资源用量与外部能力，数据默认每 10 秒自动更新。</p></section>` + SECTIONS.map(([id]) =>
         `<div id="${id}" class="anchor"></div>`).join("") + `</div>`
     + `</div>`;
   document.querySelectorAll("#toc a").forEach(a => {