:root{--bg:#f7f8fb;--card:#fff;--ink:#0f172a;--muted:#475569;--line:#e2e8f0;--brand:#1d4ed8;--accent:#0d9488}
@media (prefers-color-scheme:dark){:root{--bg:#0b1020;--card:#121a30;--ink:#e5e9f2;--muted:#9aa6bd;--line:#24304d;--brand:#7aa2ff;--accent:#2dd4bf}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--brand)}
header{border-bottom:1px solid var(--line);background:var(--card)}
.wrap{max-width:820px;margin:0 auto;padding:0 20px}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--ink);text-decoration:none;letter-spacing:.02em}
.brand img{width:32px;height:32px;border-radius:8px}
nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-size:15px}
nav a:hover,nav a.on{color:var(--ink)}
main{padding:40px 0 56px}
h1{font-size:32px;line-height:1.2;margin:0 0 8px}
h2{font-size:20px;margin:32px 0 8px}
.lead{color:var(--muted);font-size:18px;margin:0 0 24px}
.meta{color:var(--muted);font-size:14px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin:18px 0}
.card h3{margin:0 0 6px;font-size:18px}
ul{padding-left:22px}
li{margin:4px 0}
table{border-collapse:collapse;width:100%;font-size:15px}
td,th{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
footer{border-top:1px solid var(--line);padding:22px 0;color:var(--muted);font-size:14px}
code{font-size:14px}