:root{--bg:#0b111e;--card:#172033;--card2:#1e293b;--accent:#38bdf8;--text:#f8fafc;--muted:#a8b3c7;--border:#2b3950}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;line-height:1.7}header{background:linear-gradient(135deg,#0b111e,#14213b);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.wrap{max-width:980px;margin:auto;padding:0 22px}.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:68px}.brand{font-weight:800;color:#fff;text-decoration:none;font-size:20px}.brand span{color:var(--accent)}nav{display:flex;gap:14px;flex-wrap:wrap}nav a{color:var(--muted);text-decoration:none;font-size:14px}nav a:hover{color:#fff}.hero{padding:54px 0 30px}.hero h1{font-size:clamp(30px,5vw,46px);line-height:1.15;margin:0 0 12px}.hero p{color:var(--muted);max-width:760px}.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:28px;margin:20px 0;box-shadow:0 10px 30px #0003}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:16px}.tile{display:block;background:var(--card2);border:1px solid var(--border);border-radius:15px;padding:20px;color:#fff;text-decoration:none}.tile:hover{border-color:var(--accent);transform:translateY(-1px)}h2{margin-top:30px;color:#fff}h3{color:#e7f6ff}a{color:var(--accent)}ul{padding-left:24px}footer{border-top:1px solid var(--border);margin-top:50px;padding:28px 0 45px;color:var(--muted);font-size:14px}small,.muted{color:var(--muted)}.notice{border-left:4px solid var(--accent);padding:14px 18px;background:#13233a;border-radius:8px}code{background:#0a1220;padding:2px 6px;border-radius:5px}@media(max-width:700px){.nav{align-items:flex-start;flex-direction:column;padding:14px 0}.hero{padding-top:35px}.card{padding:21px}}