:root{
  --bg: #0b0b0b;
  --panel:#111827;
  --muted:#9ca3af;
  --text:#fff;
  --accent:#FF3B30;
  --accent-2:#d32b20;
  --border:#1f2937;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}
a{color:#60a5fa;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:0 20px}
.nav{position:sticky;top:0;backdrop-filter:saturate(180%) blur(8px);background:rgba(11,11,11,0.8);border-bottom:1px solid var(--border);z-index:50}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:14px 0}
.brand{display:flex;align-items:center;gap:12px}
.brand img{width:36px;height:36px}
.brand span{font-weight:800;letter-spacing:.5px}
.menu{display:flex;gap:18px}
.menu a{color:#e5e7eb;font-weight:600;font-size:14px;opacity:.9}
.menu a.active, .menu a:hover{color:#fff;opacity:1}
.hero{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:28px;padding:64px 0}
.hero h1{font-size:52px;line-height:1.1;margin:0 0 10px;font-weight:900}
.tagline{color:var(--muted);font-size:18px;margin-bottom:22px}
.cta{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.badge{display:inline-flex;align-items:center;gap:10px;background:var(--panel);border:1px solid var(--border);padding:12px 16px;border-radius:12px}
.badge .dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}
.panel{background:var(--panel);border:1px solid var(--border);border-radius:16px;padding:18px}
.panels{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.section{padding:28px 0}
.section h2{font-size:28px;margin:0 0 12px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.feature{background:var(--panel);border:1px solid var(--border);padding:18px;border-radius:16px}
.feature h3{margin-top:8px}
.footer{border-top:1px solid var(--border);padding:26px 0;color:var(--muted)}
.grid-2{display:grid;grid-template-columns:2fr 1fr;gap:24px}
.toc{position:sticky;top:88px}
.toc .panel{position:sticky;top:88px}
.toc a{display:block;color:#cbd5e1;margin:6px 0;font-size:14px}
.toc a:hover{color:#fff}
.prose{color:#e5e7eb}
.prose h1{font-size:36px;margin:0 0 12px}
.prose h2{font-size:22px;margin:22px 0 6px}
.prose p{margin:8px 0}
.prose ul{margin:8px 0 8px 20px}
.kicker{color:#fca5a5;letter-spacing:.12em;text-transform:uppercase;font-weight:800;font-size:12px}
.note{font-size:13px;color:#cbd5e1}
.btn{background:var(--accent);color:#fff;padding:12px 18px;border-radius:12px;border:none;font-weight:800;cursor:pointer}
.btn:hover{background:var(--accent-2)}
code{background:#0f172a;color:#93c5fd;padding:2px 6px;border-radius:6px}
@media (max-width: 980px){
  .hero{grid-template-columns:1fr}
  .panels{grid-template-columns:1fr}
  .features{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .menu{display:none}
}