:root{
    --accent:#2F6FED;
    --accent-dark:#1f56c4;
    --bg:#ffffff;
    --bg-side:#fafbfc;
    --bg-code:#f6f8fa;
    --text:#24292f;
    --text-light:#57606a;
    --border:#e5e7eb;
    --danger:#d1242f;
    --ok:#1a7f37;
    --radius:6px;
  }
  *{box-sizing:border-box;}
  html,body{margin:0;padding:0;}
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;
    color:var(--text);
    background:var(--bg);
    font-size:14px;
    line-height:1.7;
  }
  a{color:var(--accent);text-decoration:none;}
  a:hover{text-decoration:underline;}

  /* ---------- 顶部导航 ---------- */
  header.topbar{
    position:fixed;top:0;left:0;right:0;height:56px;z-index:100;
    background:#fff;border-bottom:1px solid var(--border);
    display:flex;align-items:center;padding:0 20px;
    box-shadow:0 1px 3px rgba(0,0,0,.04);
  }
  .sidebar-toggle-btn{
    width:32px;height:32px;flex-shrink:0;margin-right:12px;border:1px solid var(--border);
    background:#fff;border-radius:var(--radius);cursor:pointer;display:flex;align-items:center;justify-content:center;
    color:var(--text-light);padding:0;
  }
  .sidebar-toggle-btn:hover{background:var(--bg-side);color:var(--text);}
  .sidebar-toggle-btn svg{width:16px;height:16px;}
  header.topbar .brand{
    font-size:16px;font-weight:700;color:var(--text);white-space:nowrap;
    display:flex;align-items:center;gap:8px;
  }
  header.topbar .brand .dot{
    width:9px;height:9px;border-radius:50%;background:var(--accent);display:inline-block;
  }
  header.topbar .search{
    margin-left:28px;flex:1;max-width:420px;position:relative;
  }
  header.topbar .search input{
    width:100%;padding:8px 12px 8px 32px;border:1px solid var(--border);border-radius:var(--radius);
    font-size:13px;background:var(--bg-side);outline:none;transition:.15s;
  }
  header.topbar .search input:focus{border-color:var(--accent);background:#fff;}
  header.topbar .search::before{
    content:"";position:absolute;left:10px;top:50%;transform:translateY(-50%);
    width:14px;height:14px;border:2px solid #9aa4b2;border-radius:50%;
  }
  header.topbar .search::after{
    content:"";position:absolute;left:19px;top:16px;width:6px;height:2px;background:#9aa4b2;
    transform:rotate(45deg);
  }
  header.topbar .meta{margin-left:auto;font-size:12px;color:var(--text-light);}
  .export-open-btn{
    margin-left:16px;background:var(--accent);color:#fff;border:none;padding:8px 16px;
    border-radius:var(--radius);font-size:13px;cursor:pointer;white-space:nowrap;
  }
  .export-open-btn:hover{background:var(--accent-dark);}

  /* ---------- 左侧导航 ---------- */
  nav.sidebar{
    position:fixed;top:56px;left:0;bottom:0;width:260px;
    background:var(--bg-side);border-right:1px solid var(--border);
    overflow-y:auto;padding:18px 0 40px;
    transition:transform .2s ease, box-shadow .2s ease;
  }
  body.sidebar-collapsed nav.sidebar{
    transform:translateX(-260px);
  }
  body.sidebar-collapsed main{
    margin-left:0 !important;
  }
  nav.sidebar .group{margin-bottom:4px;}
  nav.sidebar .group-title{
    font-size:12px;font-weight:700;color:var(--text-light);text-transform:uppercase;
    letter-spacing:.04em;padding:10px 20px 6px;
    display:flex;align-items:center;justify-content:space-between;cursor:pointer;user-select:none;
  }
  nav.sidebar .group-title:hover{color:var(--text);}
  nav.sidebar .group-chevron{
    width:14px;height:14px;flex-shrink:0;transition:transform .15s ease;color:var(--text-light);
  }
  nav.sidebar .group-chevron svg{display:block;width:100%;height:100%;}
  nav.sidebar .group.collapsed .group-chevron{transform:rotate(-90deg);}
  nav.sidebar .group.collapsed ul{display:none;}
  nav.sidebar.search-active .group.collapsed ul{display:block;}
  nav.sidebar ul{list-style:none;margin:0;padding:0;}
  nav.sidebar li a{
    display:block;padding:7px 20px 7px 22px;font-size:13.5px;color:var(--text);
    border-left:2px solid transparent;
  }
  nav.sidebar li a:hover{background:#eef2ff;text-decoration:none;color:var(--accent);}
  nav.sidebar li a.active{
    border-left-color:var(--accent);color:var(--accent);font-weight:600;background:#eef2ff;
  }
  nav.sidebar li a .path{
    display:block;font-size:11px;color:var(--text-light);font-family:Consolas,Menlo,monospace;
    margin-top:1px;
  }
  nav.sidebar .count{
    display:inline-block;margin-left:6px;font-size:11px;color:var(--text-light);
  }

  /* ---------- 导出PDF 弹窗 ---------- */
  .export-modal-overlay{
    position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:300;
    display:none;align-items:center;justify-content:center;padding:24px;
  }
  .export-modal-overlay.show{display:flex;}
  .export-modal{
    background:#fff;border-radius:10px;width:640px;max-width:100%;max-height:82vh;
    display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(0,0,0,.3);
  }
  .export-modal-header{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 20px;border-bottom:1px solid var(--border);
  }
  .export-modal-header h3{margin:0;font-size:16px;}
  .export-modal-close{
    background:none;border:none;font-size:22px;line-height:1;color:var(--text-light);cursor:pointer;
  }
  .export-modal-close:hover{color:var(--text);}
  .export-modal-toolbar{
    display:flex;align-items:center;justify-content:space-between;
    padding:10px 20px;font-size:12.5px;color:var(--text-light);border-bottom:1px solid var(--border);
  }
  .export-modal-toolbar-actions a{font-size:12.5px;margin-left:14px;color:var(--accent);}
  .export-modal-body{overflow-y:auto;padding:8px 20px;flex:1;}
  .export-modal-group{margin:14px 0;}
  .export-modal-group-title{
    font-size:12px;font-weight:700;color:var(--text-light);text-transform:uppercase;
    letter-spacing:.04em;margin-bottom:6px;
  }
  .export-modal-item{
    display:flex;align-items:flex-start;gap:8px;padding:6px 4px;font-size:13.5px;
    border-radius:6px;cursor:pointer;
  }
  .export-modal-item:hover{background:var(--bg-side);}
  .export-modal-item input{margin-top:3px;flex-shrink:0;accent-color:var(--accent);cursor:pointer;}
  .export-modal-item .path{
    display:block;font-size:11px;color:var(--text-light);font-family:Consolas,Menlo,monospace;margin-top:1px;
  }
  .export-modal-footer{
    display:flex;justify-content:flex-end;gap:10px;padding:14px 20px;border-top:1px solid var(--border);
  }
  .export-modal-footer button{
    padding:8px 18px;border-radius:6px;font-size:13px;cursor:pointer;border:1px solid transparent;
  }
  .export-modal-footer button#exportModalGo{background:var(--accent);color:#fff;}
  .export-modal-footer button#exportModalGo:hover{background:var(--accent-dark);}
  .export-modal-footer button.secondary{background:#fff;border-color:var(--border);color:var(--text);}

  /* ---------- 右侧小目录 ---------- */
  nav.toc{
    position:fixed;top:56px;right:0;bottom:0;width:210px;
    border-left:1px solid var(--border);background:#fff;
    overflow-y:auto;padding:22px 18px 40px;
  }
  nav.toc .toc-title{
    font-size:12px;font-weight:700;color:var(--text-light);text-transform:uppercase;
    letter-spacing:.04em;margin-bottom:10px;
  }
  nav.toc ul{list-style:none;margin:0;padding:0;}
  nav.toc li a{
    display:block;padding:5px 0 5px 12px;font-size:12.5px;color:var(--text-light);
    border-left:2px solid var(--border);line-height:1.4;
  }
  nav.toc li a.lvl4{padding-left:22px;font-size:12px;}
  nav.toc li a:hover{color:var(--accent);text-decoration:none;}
  nav.toc li a.active{
    color:var(--accent);border-left-color:var(--accent);font-weight:600;background:#f5f8ff;
  }

  /* ---------- 主内容 ---------- */
  main{
    margin-left:260px;margin-right:210px;margin-top:56px;padding:32px 40px 120px;max-width:800px;
    transition:margin-left .2s ease;
  }
  section.intro{
    padding-bottom:28px;margin-bottom:28px;border-bottom:1px solid var(--border);
  }
  section.intro h1{font-size:26px;margin:0 0 10px;}
  section.intro p{color:var(--text-light);margin:6px 0;}
  .badge-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px;}
  .badge{
    display:inline-flex;align-items:center;gap:4px;padding:4px 10px;border-radius:14px;
    font-size:12px;background:var(--bg-side);border:1px solid var(--border);color:var(--text-light);
  }

  article.endpoint{
    padding-top:44px;margin-top:8px;border-top:1px solid var(--border);
    scroll-margin-top:72px;
  }
  article.endpoint:first-of-type{border-top:none;}
  article.endpoint .crumb{font-size:12.5px;color:var(--text-light);margin-bottom:6px;}
  article.endpoint h2{
    font-size:22px;margin:0 0 8px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  }
  .method{
    font-family:Consolas,Menlo,monospace;font-size:12px;font-weight:700;color:#fff;
    background:var(--accent);padding:3px 8px;border-radius:4px;letter-spacing:.03em;
  }
  .method.post{background:#7c3aed;}
  .method.push{background:#d97706;}
  .path-code{
    font-family:Consolas,Menlo,monospace;font-size:15px;color:var(--text);background:var(--bg-code);
    padding:3px 8px;border-radius:4px;border:1px solid var(--border);
  }
  article.endpoint .desc{color:var(--text-light);margin:10px 0 20px;}

  h3.sec{
    font-size:16px;margin:28px 0 12px;padding-bottom:6px;border-bottom:1px solid var(--border);
    display:flex;align-items:center;gap:8px;
  }
  h4.sub{font-size:14px;margin:18px 0 8px;color:var(--text);}

  table{width:100%;border-collapse:collapse;margin:0 0 8px;font-size:13px;}
  table th,table td{
    text-align:left;padding:8px 12px;border:1px solid var(--border);vertical-align:top;
  }
  table th{background:var(--bg-side);font-weight:600;color:var(--text);white-space:nowrap;}
  table td code{
    font-family:Consolas,Menlo,monospace;font-size:12.5px;background:var(--bg-code);
    padding:1px 5px;border-radius:3px;
  }
  .req{color:var(--danger);font-weight:700;}
  .opt{color:var(--text-light);}
  .new-tag{
    display:inline-block;font-size:10.5px;font-weight:700;color:#fff;background:var(--ok);
    padding:1px 6px;border-radius:10px;margin-left:6px;vertical-align:1px;
  }

  pre{
    background:#0d1117;color:#c9d1d9;padding:14px 16px;border-radius:var(--radius);
    overflow-x:auto;font-size:12.5px;line-height:1.6;margin:0 0 16px;
    font-family:Consolas,"SFMono-Regular",Menlo,monospace;
  }
  pre .tok-key{color:#79c0ff;}
  pre .tok-str{color:#a5d6ff;}
  pre .tok-num{color:#79c0ff;}
  .example-tabs{display:flex;gap:6px;margin-bottom:0;}
  .example-tabs span{
    font-size:12px;color:var(--text-light);background:var(--bg-side);border:1px solid var(--border);
    border-bottom:none;padding:5px 12px;border-radius:6px 6px 0 0;
  }
  .code-block-wrap{margin-bottom:20px;}
  .code-block-wrap pre{border-radius:0 6px 6px 6px;margin:0;}

  .callout{
    background:#fff8e6;border:1px solid #ffe4a1;border-radius:var(--radius);
    padding:12px 16px;font-size:13px;color:#7a5b00;margin:16px 0;
  }
  .callout.tip{background:#eef7ff;border-color:#bcdfff;color:#1a4d80;}
  .callout strong{display:block;margin-bottom:4px;}

  ul.plain{margin:8px 0;padding-left:20px;}
  ul.plain li{margin:4px 0;color:var(--text-light);}
  ul.plain li strong{color:var(--text);}

  code.field{
    font-family:Consolas,Menlo,monospace;background:var(--bg-code);padding:1px 5px;border-radius:3px;
    font-size:12.5px;
  }

  .top-link{
    position:fixed;right:32px;bottom:32px;width:40px;height:40px;border-radius:50%;
    background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;
    font-size:18px;box-shadow:0 2px 8px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:.2s;
  }
  .top-link.show{opacity:1;pointer-events:auto;}

  @media (max-width:1240px){
    nav.toc{display:none;}
    main{margin-right:0;}
  }
  @media (max-width:900px){
    nav.sidebar{display:none;}
    main{margin-left:0;padding:24px;}
  }

  /* ---------- 导出页专用 ---------- */
  .export-header{
    max-width:800px;margin:0 auto 24px;padding-bottom:16px;border-bottom:2px solid var(--border);
  }
  .export-header h1{font-size:22px;margin:0 0 6px;}
  .export-header .export-actions{margin-top:12px;display:flex;gap:10px;}
  .export-header .export-actions button{
    background:var(--accent);color:#fff;border:none;padding:8px 18px;border-radius:6px;
    font-size:13px;cursor:pointer;
  }
  .export-header .export-actions button.secondary{background:#fff;color:var(--text);border:1px solid var(--border);}
  .export-doc-item{max-width:800px;margin:0 auto;}
  .export-doc-item + .export-doc-item{
    margin-top:36px;padding-top:36px;border-top:2px dashed var(--border);page-break-before:always;
  }
  .export-loading{max-width:800px;margin:40px auto;color:var(--text-light);font-size:13px;}

  /* ---------- 打印样式：隐藏导航/交互元素，只留正文 ---------- */
  @media print{
    header.topbar, nav.sidebar, nav.toc, .top-link, .export-modal-overlay, .export-header .export-actions{
      display:none !important;
    }
    main{margin:0 !important;max-width:none !important;padding:0 !important;}
    body{font-size:12px;}
    pre{white-space:pre-wrap;word-break:break-all;}
    article.endpoint{page-break-inside:avoid;}
    .export-doc-item + .export-doc-item{page-break-before:always;border-top:none;}
  }