:root{--bg:#fff;--fg:#111;--muted:#666;--line:#e5e5e5}
@media (prefers-color-scheme:dark){:root{--bg:#000;--fg:#eee;--muted:#999;--line:#222}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 20px 80px}
h1{font-size:28px;margin:0 0 4px}h2{font-size:18px;margin:32px 0 8px}p,li{color:var(--fg)}
.meta{color:var(--muted);font-size:14px;margin-bottom:24px}nav{font-size:14px;margin-bottom:32px}nav a{color:var(--fg)}
hr{border:0;border-top:1px solid var(--line);margin:48px 0}a{color:inherit}ul{padding-left:20px}