:root{
  --bg:#0a0f14;
  --fg:#ecf2f8;
  --muted:#91a4b3;
  --accent:#6ad4ff;
  --accent-2:#a8ffbf;
  --card:#101720;
  --border:#22303d;
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius: 18px;
  --maxw: 1100px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica,Arial,sans-serif}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:24px}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 0}
.nav a.brand{font-weight:800;font-size:20px;letter-spacing:.4px}
.nav .links{display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-block;padding:12px 18px;border-radius:999px;background:var(--accent);color:#001018;font-weight:700;box-shadow:var(--shadow);border:2px solid transparent}
.btn.secondary{background:transparent;border-color:var(--border);color:var(--fg)}
.btn:hover{transform:translateY(-1px)}
.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:30px;align-items:center;padding:32px 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero .card{padding:24px}
h1{font-size:44px;line-height:1.1;margin:0 0 10px}
h2{font-size:28px;margin:30px 0 8px}
h3{font-size:20px;margin:16px 0 6px}
.lead{color:var(--muted);font-size:18px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feature{padding:16px}
.kv{aspect-ratio:16/10;background:linear-gradient(135deg, rgba(106,212,255,.18), rgba(168,255,191,.14));border-radius:12px;border:1px dashed var(--border);display:flex;align-items:center;justify-content:center}
section{margin:42px 0}
.footer{margin-top:60px;padding:32px 0;color:var(--muted);border-top:1px solid var(--border)}
.badges{display:flex;gap:12px;flex-wrap:wrap}
code.kbd{background:#09141b;padding:2px 6px;border-radius:6px;border:1px solid var(--border);font-family:ui-monospace,SFMono-Regular,Menlo,monospace}
ul.clean{margin:0;padding-left:18px}
.notice{padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:#0d1620}
.header{padding:36px 0 8px}
.breadcrumbs{color:var(--muted);font-size:14px}
table{width:100%;border-collapse:collapse;border:1px solid var(--border);border-radius:12px;overflow:hidden}
th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left}
figure{margin:0}
img{max-width:100%;height:auto;display:block}
@media (max-width: 900px){
  .hero{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  h1{font-size:36px}
}