:root{
    --bg:#ffffff;
    --fg:#0f172a;
    --muted:#475569;
    --subtle:#64748b;
    --line:#e2e8f0;
    --soft:#f8fafc;
  
    --accent:#0b4f8a;
    --accent2:#0ea5e9;
    --accentSoft: rgba(11,79,138,0.10);
    --accentBorder: rgba(11,79,138,0.22);
  
    --shadow: 0 1px 0 rgba(15,23,42,0.02);
  }
  
  *{ box-sizing:border-box; }
  html,body{ height:100%; }
  body{
    margin:0;
    font-family:"Poppins",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
    color:var(--fg);
    background:
      radial-gradient(1200px 600px at 18% -12%, rgba(11,79,138,0.12) 0%, rgba(11,79,138,0) 62%),
      radial-gradient(900px 500px at 110% 14%, rgba(14,165,233,0.10) 0%, rgba(14,165,233,0) 58%),
      var(--bg);
  }
  
  a{ color:inherit; text-decoration:none; }
  a:hover{ text-decoration:underline; }
  
  .shell{
    display:grid;
    grid-template-columns: 320px 1fr;
    min-height:100vh;
  }
  @media (max-width: 980px){
    .shell{ grid-template-columns: 1fr; }
    .side{ position: sticky; top:0; z-index: 2; }
  }
  
  .side{
    border-right:1px solid var(--line);
    background: rgba(255,255,255,0.78);
    backdrop-filter: blur(8px);
    padding:18px;
  }
  
  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    padding:10px 10px;
    border:1px solid var(--line);
    border-radius:16px;
    background: rgba(255,255,255,0.86);
    box-shadow: var(--shadow);
  }
  .mark{
    width:38px; height:38px;
    display:flex; align-items:center; justify-content:center;
    border-radius:12px;
    background: linear-gradient(135deg, var(--accentSoft), rgba(255,255,255,0));
    border:1px solid var(--accentBorder);
    color: var(--accent);
  }
  .mark svg{ width:22px; height:22px; }
  .brandTitle{ font-weight:800; letter-spacing:-0.01em; }
  .brandSub{ font-size:12px; color: var(--subtle); margin-top:2px; }
  
  .sideControls{ margin-top:14px; display:grid; gap:10px; }
  .search{
    width:100%;
    padding:10px 12px;
    border:1px solid var(--line);
    border-radius:12px;
    outline:none;
    font-weight:500;
  }
  .search:focus{ border-color: var(--accentBorder); box-shadow: 0 0 0 4px rgba(11,79,138,0.10); }
  
  .sideLinks{ display:flex; gap:10px; flex-wrap:wrap; }
  .link{
    font-size:13px;
    color: var(--accent);
    text-decoration: underline;
  }
  
  .nav{
    margin-top:14px;
    display:grid;
    gap:8px;
  }
  .navGroup{ margin-top:8px; }
  .navItem{
    display:flex;
    align-items:center;
    gap:10px;
    padding:10px 10px;
    border:1px solid var(--line);
    border-radius:14px;
    background:#fff;
    color: var(--muted);
    box-shadow: var(--shadow);
  }
  .navItem:hover{ text-decoration:none; border-color: var(--accentBorder); }
  .navItem.active{
    border-color: var(--accentBorder);
    background: linear-gradient(90deg, var(--accentSoft), rgba(255,255,255,0));
    color: var(--fg);
  }
  .navIcon{ width:18px; height:18px; color: var(--accent); flex: 0 0 auto; }
  .navLabel{ font-weight:600; }
  .navPath{ font-size:12px; color: var(--subtle); }
  
  .sideFooter{
    margin-top:14px;
    padding-top:14px;
    border-top:1px solid var(--line);
  }
  .small{ font-size:15.5px; color: var(--subtle); line-height:1.65; }
  .mono{ font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace; font-size:12.5px; color: var(--subtle); }
  
  .main{
    padding:24px 22px 28px;
    max-width: 1200px;
  }
  
  .topbar{
    display:flex;
    justify-content:space-between;
    gap:14px;
    align-items:center;
    flex-wrap:wrap;
    border:1px solid var(--line);
    border-radius:18px;
    padding:12px 14px;
    background: rgba(255,255,255,0.82);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
  }
  .crumbs{ display:flex; gap:8px; align-items:center; flex-wrap:wrap; }
  .crumb{ color: var(--accent); text-decoration: underline; font-weight:600; }
  .sep{ color: var(--subtle); }
  .crumbCurrent{ font-weight:700; color: var(--fg); }
  
  .actions{ display:flex; gap:10px; flex-wrap:wrap; }
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    padding:10px 12px;
    border-radius:12px;
    border:1px solid var(--line);
    background:#fff;
    font-weight:700;
    font-size:13px;
  }
  .btn:hover{ text-decoration:none; border-color: var(--accentBorder); }
  .btn.primary{
    background: var(--accent);
    border-color: var(--accent);
    color:#fff;
  }
  .btn.primary:hover{ filter: brightness(0.98); }
  
  .contentGrid{
    margin-top:16px;
    display:grid;
    grid-template-columns: 1fr 320px;
    gap:16px;
  }
  @media (max-width: 1100px){
    .contentGrid{ grid-template-columns: 1fr; }
    .toc{ order:-1; }
  }
  
  .doc{
    border:1px solid var(--line);
    border-radius:18px;
    background: rgba(255,255,255,0.86);
    backdrop-filter: blur(8px);
    padding:16px 18px;
    box-shadow: var(--shadow);
    min-height: 60vh;
  }
  
  .status{
    display:inline-flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color: var(--muted);
    padding:8px 10px;
    border-radius:999px;
    border:1px solid var(--accentBorder);
    background: rgba(255,255,255,0.85);
    margin-bottom: 12px;
  }
  .markdown{
    line-height: 1.7;
    color: var(--fg);
  }
  .markdown h1,.markdown h2,.markdown h3{
    letter-spacing: -0.01em;
    margin: 20px 0 10px;
  }
  .markdown h1{ font-size: 30px; }
  .markdown h2{ font-size: 22px; }
  .markdown h3{ font-size: 18px; }
  .markdown p{ margin: 10px 0; color: var(--muted); }
  .markdown blockquote{
    border-left: 3px solid var(--accent);
    padding-left: 12px;
    margin: 14px 0;
    color: var(--muted);
  }
  .markdown code{
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    font-size: 13px;
  }
  .markdown pre{
    background: var(--soft);
    border:1px solid var(--line);
    border-radius: 14px;
    padding: 12px;
    overflow:auto;
  }
  .markdown table{
    border-collapse: collapse;
    width:100%;
    margin: 12px 0;
    font-size: 13.5px;
  }
  .markdown th,.markdown td{
    border:1px solid var(--line);
    padding: 10px;
    vertical-align: top;
  }
  .markdown th{
    background: linear-gradient(90deg, var(--accentSoft), rgba(255,255,255,0));
    text-align:left;
  }
  
  .toc{
    border:1px solid var(--line);
    border-radius:18px;
    background: rgba(255,255,255,0.80);
    backdrop-filter: blur(8px);
    padding:14px;
    box-shadow: var(--shadow);
    height: fit-content;
  }
  .tocHead{
    display:flex;
    justify-content:space-between;
    align-items:center;
    gap:10px;
    padding-bottom:10px;
    border-bottom:1px solid var(--line);
  }
  .tocTitle{ font-weight:800; }
  .tocLink{ font-size: 13px; color: var(--accent); text-decoration: underline; }
  
  .tocNav{ display:grid; gap:8px; margin-top:12px; }
  .tocNav a{
    font-size: 13px;
    color: var(--muted);
    padding:8px 10px;
    border-radius: 12px;
    border:1px solid var(--line);
    background:#fff;
  }
  .tocNav a:hover{ text-decoration:none; border-color: var(--accentBorder); }
  .tocNav a.active{ border-color: var(--accentBorder); background: var(--accentSoft); color: var(--fg); }
  
  .tocBlock{ margin-top:14px; padding-top:14px; border-top:1px solid var(--line); }
  .tocCard{
    display:block;
    margin-top:10px;
    padding:12px;
    border-radius:14px;
    border:1px solid var(--line);
    background:#fff;
  }
  .tocCard:hover{ text-decoration:none; border-color: var(--accentBorder); }
  .tocCardTitle{ font-weight:800; margin-bottom:4px; }
  
  .footer{
    margin-top:18px;
    padding-top:14px;
    border-top:1px solid var(--line);
    display:flex;
    flex-wrap:wrap;
    justify-content:space-between;
    gap:10px 14px;
    color: var(--subtle);
    font-size: 13px;
  }
  .footerLinks a{ color: var(--accent); text-decoration: underline; }