:root{--bg:#fbfaf7;--fg:#1d1d1b;--muted:#5d5b55;--line:#e4e1d9;--accent:#1f6f5c}
@media (prefers-color-scheme:dark){:root{--bg:#141412;--fg:#ecebe6;--muted:#a3a19a;--line:#2d2c28;--accent:#5fc3a6}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:56px 20px 80px}
header{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);padding-bottom:16px;margin-bottom:32px}
header a{color:var(--muted);text-decoration:none;margin-left:16px}
header strong{font-size:18px}
h1{font-size:32px;line-height:1.2;margin:0 0 16px}
h2{font-size:20px;margin:36px 0 8px}
p,li{color:var(--fg)}
.muted{color:var(--muted)}
a{color:var(--accent)}
footer{margin-top:56px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:14px}