:root{
  --blue-950:#082a4a; --blue-900:#0b3d6e; --blue-800:#0b4f9e; --blue-700:#1463c4;
  --blue-600:#1e6fdb; --blue-500:#3a8bde; --blue-50:#eef5ff; --blue-100:#dbeafe;
  --ink:#0f172a; --muted:#475569; --line:#e2e8f0; --bg:#ffffff; --card:#f8fafc;
  --sidebar-w:300px; --radius:12px; --radius-sm:8px;
  --shadow:0 10px 30px rgba(8,42,74,.08); --shadow-sm:0 2px 8px rgba(8,42,74,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,ui-sans-system,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;line-height:1.7}
a{color:var(--blue-700);text-decoration:none}
a:hover{color:var(--blue-600);text-decoration:underline}
::selection{background:#dbeafe;color:#082a4a}
::-webkit-scrollbar{width:9px;height:9px}::-webkit-scrollbar-track{background:#f1f5f9}::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:999px}::-webkit-scrollbar-thumb:hover{background:#94a3b8}

/* Topbar */
.topbar{position:sticky;top:0;z-index:60;background:linear-gradient(135deg,var(--blue-950) 0%,var(--blue-900) 55%,var(--blue-800) 100%);color:#fff;border-bottom:3px solid #60a5fa}
.topbar-inner{max-width:1440px;margin:0 auto;display:flex;align-items:center;gap:16px;padding:12px 22px}
.brand{display:flex;align-items:center;gap:12px;color:#fff!important;text-decoration:none!important}
.brand-mark{width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.28);display:grid;place-items:center;font-weight:800;font-size:22px}
.brand-title{font-weight:800;font-size:20px;letter-spacing:.2px;line-height:1.1}
.brand-sub{font-size:12px;opacity:.85;letter-spacing:.3px;text-transform:uppercase}
.topnav{margin-left:auto;display:flex;gap:8px;flex-wrap:wrap}
.topnav a{color:#fff!important;padding:8px 12px;border-radius:999px;border:1px solid transparent;font-size:14px}
.topnav a:hover{background:rgba(255,255,255,.15);text-decoration:none}
.topnav a.btn-white{background:#fff;color:var(--blue-900)!important;font-weight:700}
.topnav a.btn-white:hover{background:var(--blue-50)}
.menu-btn{display:none;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:8px;padding:8px 12px;cursor:pointer}

/* Landing hero */
.hero{background:linear-gradient(180deg,#eff6ff 0%,#ffffff 85%);border-bottom:1px solid var(--line)}
.hero-inner{max-width:1120px;margin:0 auto;padding:56px 22px 40px}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:28px;align-items:center}
.hero-photo{border-radius:16px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.hero-photo img{width:100%;height:100%;display:block;object-fit:cover;min-height:260px}
@media(max-width:1000px){.hero-grid{grid-template-columns:1fr}}
figure{margin:18px 0}figure img{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--line)}
figcaption{font-size:13px;color:var(--muted);margin-top:6px}
.doc-banner{border-radius:14px;overflow:hidden;border:1px solid var(--line);margin:0 0 18px;box-shadow:var(--shadow-sm)}
.doc-banner img{width:100%;height:170px;object-fit:cover;display:block}
.lane-img{width:100%;height:120px;object-fit:cover;border-radius:10px;margin-bottom:12px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--blue-100);color:var(--blue-800);font-size:12.5px;font-weight:700;letter-spacing:.4px;text-transform:uppercase;padding:6px 12px;border-radius:999px;box-shadow:var(--shadow-sm)}
.hero h1{font-size:44px;line-height:1.05;margin:18px 0 14px;color:var(--blue-950)}
.hero h1 span{color:var(--blue-700)}
.hero p.lead{font-size:19px;color:var(--muted);max-width:780px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;border-radius:10px;font-weight:700;border:1px solid transparent}
.btn-primary{background:var(--blue-800);color:#fff!important}.btn-primary:hover{background:var(--blue-700);text-decoration:none}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--blue-900)!important;box-shadow:var(--shadow-sm)}.btn-ghost:hover{border-color:#bfdbfe}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow-sm)}
.stat b{font-size:26px;color:var(--blue-900);display:block}
.stat span{font-size:13px;color:var(--muted)}
.lanes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:26px}
.lane{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}
.lane h3{margin:0 0 8px;color:var(--blue-900)}
.lane p{color:var(--muted);margin:0 0 12px}
.pill{display:inline-block;background:var(--blue-50);color:var(--blue-800);font-size:11px;font-weight:800;letter-spacing:.5px;text-transform:uppercase;padding:4px 8px;border-radius:999px;border:1px solid var(--blue-100)}

/* Docs layout */
.layout{max-width:1440px;margin:0 auto;display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:calc(100vh - 73px)}
.sidebar{border-right:1px solid var(--line);background:#fbfdff;padding:18px 14px;position:sticky;top:73px;height:calc(100vh - 73px);overflow:auto}
.sidebar h4{font-size:11px;letter-spacing:.8px;text-transform:uppercase;color:#64748b;margin:18px 8px 8px}
.sidebar ul{list-style:none;margin:0;padding:0}
.sidebar li{margin:1px 0}
.sidebar a{display:block;padding:7px 10px;border-radius:8px;color:#334155;font-size:13.5px;line-height:1.4}
.sidebar a:hover{background:var(--blue-50);text-decoration:none}
.sidebar a.active{background:var(--blue-800);color:#fff!important;font-weight:700}
.search-wrap{padding:2px 0 10px}
.search{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:#fff}
.search:focus{outline:2px solid #bfdbfe;border-color:var(--blue-500)}
.main{padding:26px 28px 60px;min-width:0}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:10px}
.crumbs a{color:var(--blue-700)}
.doc-toc{background:var(--blue-50);border:1px solid var(--blue-100);border-radius:var(--radius);padding:14px 18px;margin:18px 0}
.doc-toc summary{cursor:pointer;font-weight:800;color:var(--blue-900)}
.doc-toc ul{margin:8px 0 0;padding-left:18px}
.doc-toc li{margin:3px 0}
article h1,h2,h3,h4{color:var(--blue-950);line-height:1.25}
article h1{font-size:32px;margin:10px 0 16px;padding-bottom:12px;border-bottom:2px solid var(--blue-100)}
article h2{font-size:24px;margin:30px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
article h3{font-size:19px;margin:24px 0 10px}
article p{margin:10px 0}
article table{width:100%;border-collapse:collapse;margin:16px 0;font-size:14px;display:block;overflow:auto}
article thead{background:var(--blue-800);color:#fff}
article th,article td{padding:10px 12px;border:1px solid var(--line);text-align:left;vertical-align:top}
article tbody tr:nth-child(even){background:#f8fafc}
article code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em;background:#f1f5f9;border:1px solid #e2e8f0;padding:2px 6px;border-radius:6px;color:#0b3d6e}
article pre{background:#0b2440;color:#e2e8f0;border-radius:12px;padding:16px;overflow:auto;border:1px solid #14365d}
article pre code{background:transparent;border:0;padding:0;color:inherit}
article blockquote{margin:14px 0;padding:10px 16px;border-left:4px solid var(--blue-600);background:#eff6ff;border-radius:0 10px 10px 0;color:#334155}
article ul,article ol{margin:10px 0 14px;padding-left:24px}
article li{margin:4px 0}
article hr{border:0;border-top:1px solid var(--line);margin:26px 0}
article img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line)}
.note-callout{background:#fffbeb;border:1px solid #fde68a;color:#78350f;border-radius:10px;padding:12px 14px;margin:14px 0}
.pager{display:flex;justify-content:space-between;gap:12px;margin-top:38px;border-top:1px solid var(--line);padding-top:18px}
.pager a{border:1px solid var(--line);border-radius:10px;padding:12px 14px;background:#fff;box-shadow:var(--shadow-sm);flex:1}
.pager a small{display:block;color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:.4px}
.footer{border-top:1px solid var(--line);background:#f8fafc;color:var(--muted);font-size:13px}
.footer-inner{max-width:1440px;margin:0 auto;padding:22px;display:flex;gap:18px;flex-wrap:wrap}
.footer a{color:var(--blue-800)}

@media(max-width:1000px){
  .hero h1{font-size:34px}.hero-stats{grid-template-columns:repeat(2,1fr)}.lanes{grid-template-columns:1fr}
  .layout{grid-template-columns:1fr}.sidebar{position:fixed;inset:73px auto 0 0;width:300px;z-index:50;transform:translateX(-105%);transition:.2s}.sidebar.open{transform:none;box-shadow:var(--shadow)}
  .menu-btn{display:inline-block}.topnav{display:none}.main{padding:18px 16px 50px}
}