:root{color-scheme:dark light;--bg:#12131a;--fg:#e8e9f0;--muted:#9a9eb3;--accent:#4ad3ff;--card:#1c1e29}
@media (prefers-color-scheme: light){:root{--bg:#f6f7fb;--fg:#15161c;--muted:#5d6174;--card:#fff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:760px;margin:0 auto;padding:32px 20px 64px}h1{font-size:1.8rem;margin:0 0 4px}h2{font-size:1.15rem;margin:28px 0 8px}
.muted{color:var(--muted)}a{color:var(--accent)}.lang{display:flex;gap:8px;margin:12px 0 20px}.lang a{padding:6px 12px;border-radius:999px;background:var(--card);text-decoration:none}
.card{background:var(--card);border-radius:14px;padding:16px 18px;margin:12px 0}ol,ul{padding-left:22px}.top{display:flex;align-items:center;gap:10px;margin-bottom:8px}.top a{text-decoration:none;font-weight:700;color:var(--fg)}
section[hidden]{display:none}