:root{color-scheme:light dark;--bg:#fff;--fg:#14202e;--muted:#5b6878;--accent:#0a2f58;--line:#dfe4ea}
@media (prefers-color-scheme:dark){:root{--bg:#0a1428;--fg:#e8edf4;--muted:#9aa8ba;--accent:#8ec5ff;--line:#22304a}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 20px 64px}
h1{font-size:1.9rem;line-height:1.2;color:var(--accent);margin:0 0 4px}
h2{font-size:1.15rem;margin:32px 0 8px;color:var(--accent)}
p,li{margin:0 0 10px}
ul,ol{padding-left:22px}
.muted{color:var(--muted);font-size:.92rem}
table{width:100%;border-collapse:collapse;margin:12px 0}
th,td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top;font-size:.95rem}
a{color:var(--accent)}
footer{margin-top:40px;padding-top:16px;border-top:1px solid var(--line)}