:root{color-scheme:light dark;--bg:#fff;--fg:#111;--muted:#666;--accent:#2f6df6;--rule:#e6e6e6}
@media(prefers-color-scheme:dark){:root{--bg:#0f0f10;--fg:#f2f2f2;--muted:#9a9a9a;--rule:#2a2a2a}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Helvetica,Arial,sans-serif}
main{max-width:680px;margin:0 auto;padding:64px 24px 96px}
header{display:flex;align-items:center;gap:12px;margin-bottom:48px}header a{color:inherit;text-decoration:none;font-weight:600;letter-spacing:-.01em}
header nav{margin-left:auto;display:flex;gap:20px}header nav a{color:var(--muted);font-weight:500;font-size:15px}
h1{font-size:40px;line-height:1.1;letter-spacing:-.02em;margin:0 0 16px}h2{font-size:22px;margin:40px 0 8px;letter-spacing:-.01em}
p,li{color:var(--fg)}.lede{font-size:21px;color:var(--muted);margin:0 0 32px}
.muted{color:var(--muted);font-size:15px}a{color:var(--accent)}
hr{border:0;border-top:1px solid var(--rule);margin:48px 0}footer{color:var(--muted);font-size:14px}
ul{padding-left:22px}