:root{
  --bg:#fbfcfe;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --surface-3:#f3f6fb;
  --text:#182230;
  --text-2:#2f3b52;
  --muted:#63748b;
  --line:#e4eaf2;
  --line-2:#d8e0ec;
  --primary:#1976d2;
  --primary-soft:#edf4ff;
  --primary-soft-2:#e7f0fe;
  --success:#22a06b;
  --shadow-sm:0 1px 2px rgba(16,24,40,.04);
  --shadow-md:0 10px 30px rgba(15,23,42,.06);
  --radius-lg:18px;
  --radius-md:14px;
  --radius-sm:10px;
  --sidebar-w:320px;
  --toc-w:250px;
  --content-w:860px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
}
html[data-theme="dark"]{
  --bg:#0c111b;
  --surface:#121a26;
  --surface-2:#0f1724;
  --surface-3:#182233;
  --text:#e8eef8;
  --text-2:#d6e0ef;
  --muted:#91a2bb;
  --line:#243246;
  --line-2:#2e3f55;
  --primary:#73b4ff;
  --primary-soft:#102440;
  --primary-soft-2:#163155;
  --success:#3bcf8e;
  --shadow-sm:0 1px 2px rgba(2,6,23,.28);
  --shadow-md:0 16px 40px rgba(2,6,23,.3);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body{font-size:14px;line-height:1.65}
a{text-decoration:none;color:inherit}
button,input{font:inherit}
code,pre{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.top-strip{height:38px;display:flex;align-items:center;justify-content:center;background:linear-gradient(90deg,#1565c0,#1976d2);color:#fff;font-size:12px;font-weight:700;letter-spacing:.01em}
.topbar{height:72px;padding:0 20px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.82);backdrop-filter:blur(12px);position:sticky;top:0;z-index:25}
html[data-theme="dark"] .topbar{background:rgba(12,17,27,.84)}
.topbar-left{display:flex;align-items:center;gap:20px;min-width:0}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand-logo{width:42px;height:42px;border-radius:14px;background:linear-gradient(180deg,#2b8dff,#1565c0);display:grid;place-items:center;color:#fff;font-size:18px;box-shadow:var(--shadow-sm)}
.brand-text{font-size:16px;letter-spacing:-.02em}
.top-nav{display:flex;align-items:center;gap:4px}
.top-nav a{padding:10px 14px;border-radius:12px;color:var(--muted);font-weight:700;font-size:14px}
.top-nav a:hover{background:var(--surface-2);color:var(--text)}
.top-nav a.active{background:var(--primary-soft);color:var(--primary)}
.topbar-right{display:flex;align-items:center;gap:10px}
.search-shell{width:320px;height:44px;border:1px solid var(--line);border-radius:14px;background:var(--surface);display:flex;align-items:center;gap:10px;padding:0 14px;box-shadow:var(--shadow-sm)}
.search-shell input{width:100%;border:0;outline:none;background:transparent;color:var(--text);font-size:14px}
.search-shell input::placeholder{color:#93a1b6}
.search-icon{width:18px;height:18px;fill:var(--primary)}
.kbd{padding:2px 8px;border:1px solid var(--line);border-radius:8px;color:var(--muted);font-size:12px;font-weight:700;background:var(--surface-2)}
.icon-btn{width:44px;height:44px;border-radius:14px;border:1px solid var(--line);background:var(--surface);color:var(--muted);box-shadow:var(--shadow-sm);cursor:pointer}
.icon-btn:hover{border-color:var(--line-2);transform:translateY(-1px)}
.app-shell{display:grid;grid-template-columns:var(--sidebar-w) minmax(0,1fr) var(--toc-w);min-height:calc(100vh - 110px)}
.sidebar{border-right:1px solid var(--line);padding:22px 14px 30px 16px;background:linear-gradient(180deg,var(--surface-2),rgba(255,255,255,0));position:sticky;top:110px;height:calc(100vh - 110px);overflow:auto}
html[data-theme="dark"] .sidebar{background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(255,255,255,0))}
.content-pane{padding:34px 48px 76px;min-width:0}
.toc-pane{border-left:1px solid var(--line);padding:24px 18px;background:linear-gradient(180deg,rgba(255,255,255,.45),rgba(255,255,255,0));position:sticky;top:110px;height:calc(100vh - 110px);overflow:auto}
html[data-theme="dark"] .toc-pane{background:linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,.01))}
.sidebar-head{padding:2px 10px 18px 8px}
.sidebar-kicker{font-size:11px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;font-weight:800}
.sidebar-title{margin-top:8px;font-size:16px;font-weight:800;letter-spacing:-.02em}
.sidebar-tree{position:relative;padding-left:6px}
.sidebar-tree::before{content:"";position:absolute;left:17px;top:10px;bottom:8px;width:1px;background:var(--line)}
.menu-group{margin-bottom:8px}
.group-title{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:8px 10px 8px 6px;border-radius:12px;font-size:13px;font-weight:800;cursor:pointer;color:var(--text)}
.group-title:hover{background:var(--surface)}
.group-left{display:flex;align-items:center;gap:10px;min-width:0}
.chev{width:16px;height:16px;display:grid;place-items:center;color:var(--primary);font-size:12px;transition:transform .18s ease}
.group-title[data-collapsed="true"] .chev{transform:rotate(-90deg)}
.group-count{font-size:12px;color:var(--muted);font-weight:700}
.group-pages{padding:4px 0 6px 24px}
.group-pages.hidden{display:none}
.page-link{display:flex;align-items:center;min-height:36px;padding:6px 12px 6px 14px;border-radius:12px;font-size:13px;font-weight:600;color:var(--text-2);margin:2px 0;position:relative}
.page-link::before{content:"";position:absolute;left:-9px;top:50%;width:9px;height:1px;background:var(--line);transform:translateY(-50%)}
.page-link:hover{background:var(--surface);color:var(--text)}
.page-link.active{background:var(--primary-soft-2);color:var(--primary);font-weight:800}
.page-link.active::after{content:"";position:absolute;left:0;top:6px;bottom:6px;width:2px;background:var(--primary);border-radius:999px}
.content-inner{max-width:var(--content-w)}
.hero-chip,.module-chip{display:inline-flex;align-items:center;padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:12px;margin-bottom:16px}
.doc-content h1,.hero h1{font-size:34px;line-height:1.1;letter-spacing:-.04em;margin:0 0 10px}
.doc-content .lead,.hero p{font-size:15px;color:var(--muted);max-width:760px;margin:0 0 24px}
.hero{padding-top:8px}
.hero-cards,.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px;margin-top:26px}
.card{display:block;padding:20px;border:1px solid var(--line);background:linear-gradient(180deg,var(--surface),var(--surface-2));border-radius:18px;box-shadow:var(--shadow-sm)}
.card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.card h3{margin:0 0 10px;font-size:17px;letter-spacing:-.02em}
.card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
.card .cta{display:inline-flex;align-items:center;margin-top:16px;padding:8px 12px;border-radius:999px;background:var(--primary);color:#fff;font-size:13px;font-weight:800}
.doc-content h2{font-size:24px;line-height:1.25;letter-spacing:-.03em;margin:34px 0 10px}
.doc-content h3{font-size:18px;line-height:1.35;letter-spacing:-.02em;margin:24px 0 8px}
.doc-content p,.doc-content li{font-size:14px;color:var(--text-2)}
.doc-content ul,.doc-content ol{padding-left:22px}
.doc-content table{width:100%;border-collapse:collapse;border:1px solid var(--line);background:var(--surface);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-sm)}
.doc-content th,.doc-content td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;font-size:13px;vertical-align:top}
.doc-content th{background:var(--surface-2);font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.doc-content tr:last-child td{border-bottom:0}
.doc-content img{width:100%;border-radius:20px;border:1px solid var(--line);background:var(--surface);padding:12px;box-shadow:var(--shadow-sm);margin:20px 0}
.callout-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}
.callout{padding:16px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,var(--surface),var(--surface-2))}
.callout strong{display:block;margin-bottom:6px;font-size:14px}
.callout span{display:block;font-size:13px;color:var(--muted)}
.note{margin-top:16px;padding:14px 16px;border:1px solid rgba(25,118,210,.18);background:var(--primary-soft);border-radius:16px;color:var(--text-2)}
.footer-note{margin-top:30px;padding-top:16px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}
.toc-title{font-size:11px;text-transform:uppercase;letter-spacing:.18em;color:var(--muted);font-weight:900;margin-bottom:14px}
.toc-pane a{display:block;padding:5px 8px;border-radius:8px;font-size:13px;color:var(--text-2);font-weight:600}
.toc-pane a:hover{background:var(--surface)}
.toc-pane .toc-child{padding-left:16px;color:var(--muted);font-weight:500}
.btn{display:inline-flex;align-items:center;justify-content:center;height:42px;padding:0 16px;border-radius:12px;border:1px solid transparent;cursor:pointer;font-weight:800}
.btn-primary{background:var(--primary);color:#fff}
.btn-soft{background:var(--surface);border-color:var(--line);color:var(--text)}
.gate-overlay{position:fixed;inset:0;background:rgba(6,13,24,.52);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;padding:24px;z-index:99}
.gate-overlay.hidden{display:none}
.gate-card{width:min(560px,100%);background:linear-gradient(180deg,var(--surface),var(--surface-2));border:1px solid var(--line);border-radius:26px;box-shadow:0 30px 80px rgba(2,6,23,.18);padding:28px}
.gate-badge{display:inline-flex;padding:6px 12px;border-radius:999px;background:var(--primary-soft);color:var(--primary);font-weight:800;font-size:12px}
.gate-card h1{font-size:32px;letter-spacing:-.04em;margin:14px 0 8px}
.gate-copy{font-size:14px;color:var(--muted);margin-bottom:18px}
.gate-row{display:flex;gap:12px}
.gate-row input{flex:1;height:46px;border:1px solid var(--line);border-radius:14px;background:var(--surface);padding:0 14px;color:var(--text)}
.gate-row input:focus,.search-shell:focus-within{outline:none;border-color:rgba(25,118,210,.45);box-shadow:0 0 0 4px rgba(25,118,210,.08)}
.gate-foot{display:flex;justify-content:space-between;align-items:center;margin-top:14px}
#accessCodeError{font-size:13px;color:#d83c3c;font-weight:700}
.home-mast{padding-top:8px}
.kicker{font-size:12px;text-transform:uppercase;letter-spacing:.18em;color:var(--muted);font-weight:900;margin-bottom:12px}
.code-block{background:#08111f;color:#e6edf7;border-radius:18px;padding:18px;border:1px solid rgba(255,255,255,.08);overflow:auto}
.code-block code{font-size:13px;line-height:1.7;white-space:pre}
@media (max-width: 1280px){
  .app-shell{grid-template-columns:290px minmax(0,1fr)}
  .toc-pane{display:none}
}
@media (max-width: 900px){
  .topbar{padding:0 14px}
  .search-shell{width:230px}
  .app-shell{grid-template-columns:1fr}
  .sidebar{display:none}
  .content-pane{padding:24px 18px 64px}
}