:root{color-scheme:light;--ink:#1e293b;--muted:#64748b;--line:#e2e8f0;--red:#e11d2e}
*{box-sizing:border-box}body{margin:0;background:#f8fafc;color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
header{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:14px 20px;background:#4d4d4d}
header a,header b{color:#fff;text-decoration:none;font-size:14px}.langs{display:flex;flex-wrap:wrap;gap:4px 10px}.langs a{opacity:.75}.langs a:hover{opacity:1}
main{max-width:820px;margin:0 auto;padding:28px 20px 64px}h1{font-size:30px;margin:0 0 4px}.upd{color:var(--muted);margin:0 0 18px;font-size:14px}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 28px}.toc a{padding:6px 12px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);text-decoration:none;font-size:14px}
section{background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px 24px 18px;margin:0 0 20px;scroll-margin-top:16px}
h2{font-size:22px;margin:18px 0 8px}h3{font-size:16px;margin:20px 0 4px}p,li{color:#334155}ul{padding-left:22px}a{color:var(--red)}
@media (max-width:600px){main{padding:20px 14px 48px}section{padding:4px 16px 14px}h1{font-size:25px}}