*{box-sizing:border-box}body{margin:0;font-family:system-ui,Arial,sans-serif;background:#0b0c10;color:#eaf0f1}
a{color:#9bd1ff;text-decoration:none}a:hover{text-decoration:underline}
.nav{display:flex;justify-content:space-between;align-items:center;padding:12px 16px;background:#11131a;border-bottom:1px solid #1d2030;position:sticky;top:0}
.nav .brand a{font-weight:700;color:#fff}
.nav nav a{margin-left:16px}
.container{max-width:900px;margin:24px auto;padding:0 16px}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:16px}
.card{display:block;background:#121522;border:1px solid #1d2030;border-radius:12px;padding:16px}
.table{width:100%;border-collapse:collapse;margin-top:16px}
.table th,.table td{border:1px solid #1d2030;padding:8px;text-align:left}
.table th{background:#121522}
.num{text-align:center}
.code{background:#121522;border:1px solid #1d2030;border-radius:8px;padding:12px;white-space:pre-wrap}
.foot{text-align:center;opacity:.7;padding:24px}
.stack>*+*{margin-top:12px}