:root{--bg:#0b1220;--fg:#e8eef7;--muted:#9aa6b2;--card:#121a2a}body,html{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Inter,Helvetica Neue,Arial;color:var(--fg);background:radial-gradient(1200px 800px at 20% -10%,#12213a 0,#0b1220 55%) no-repeat,linear-gradient(180deg,#0b1220,#0b1220)}a{color:#75e0a3;text-decoration:none}code{background:#0f172a;padding:.2rem .4rem;border-radius:.4rem}.container{max-width:880px;margin:0 auto;padding:40px 20px}.card{background:linear-gradient(180deg,#0c1729,#0a1422);border:1px solid #1f2a44;border-radius:16px;padding:24px;box-shadow:0 8px 30px rgba(0,0,0,.25)}.h1{font-size:32px;margin:0 0 8px}.sub{color:var(--muted);margin:0 0 24px}kbd{background:#101828;border:solid #1f2a44;border-width:1px 1px 2px;padding:2px 6px;border-radius:6px}