:root{--bg:#fff;--fg:#1a2233;--muted:#5b6478;--line:#dfe4ee;--accent:#0b7d8c}
@media(prefers-color-scheme:dark){:root{--bg:#0f1524;--fg:#e8ecf5;--muted:#9aa4ba;--line:#26304a;--accent:#4fd1c5}}
*{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:28px 18px 60px}
h1{font-size:1.6rem;margin:0 0 4px}
h2{font-size:1.15rem;margin:30px 0 8px;color:var(--accent)}
.muted{color:var(--muted);font-size:.92rem}
ol,ul{padding-left:22px}
table{width:100%;border-collapse:collapse;margin:8px 0}
th,td{text-align:left;border-bottom:1px solid var(--line);padding:8px 6px;vertical-align:top;font-size:.95rem}
a{color:var(--accent)}
nav{margin-top:34px;padding-top:14px;border-top:1px solid var(--line);font-size:.92rem}