:root{
  --bg:#0b0f17;--card:#121a29;--text:#e8eefc;--muted:#a8b3cf;--accent:#4aa3ff;--border:#1f2a44;
  --max:980px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
header{border-bottom:1px solid var(--border);background:rgba(11,15,23,.8);backdrop-filter:blur(8px);position:sticky;top:0;z-index:5}
.nav{max-width:var(--max);margin:0 auto;padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.3px}
.badge{font-size:12px;padding:2px 8px;border:1px solid var(--border);border-radius:999px;color:var(--muted)}
.navlinks{display:flex;gap:14px;flex-wrap:wrap;justify-content:flex-end}
main{max-width:var(--max);margin:0 auto;padding:28px 18px}
.hero{background:linear-gradient(180deg, rgba(74,163,255,.18), rgba(18,26,41,.2));border:1px solid var(--border);border-radius:18px;padding:22px}
h1{margin:0 0 8px 0;font-size:32px}
h2{margin:28px 0 10px 0;font-size:22px}
h3{margin:18px 0 8px 0;font-size:16px;color:var(--text)}
p{margin:10px 0;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--border);border-radius:18px;padding:18px;margin-top:16px}
ul{margin:10px 0 10px 22px;color:var(--muted)}
small, .small{color:var(--muted);font-size:13px}
footer{border-top:1px solid var(--border);margin-top:30px}
.footer{max-width:var(--max);margin:0 auto;padding:18px;color:var(--muted);display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap}
.kv{display:flex;gap:14px;flex-wrap:wrap;margin-top:10px}
.kv > div{background:rgba(18,26,41,.6);border:1px solid var(--border);border-radius:14px;padding:10px 12px}
code{background:rgba(0,0,0,.25);padding:2px 6px;border-radius:8px;border:1px solid var(--border)}