:root{--bg:#fbfaf7;--fg:#1f2328;--muted:#5b6168;--line:#dcd8cf;--accent:#2f5d50}
@media (prefers-color-scheme:dark){:root{--bg:#16181a;--fg:#e8e6e1;--muted:#a3a7ab;--line:#33373b;--accent:#8cc3b0}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:18px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 16px 48px}
h1{font-size:1.7rem;line-height:1.25;margin:0 0 .5em}
h2{font-size:1.2rem;margin:2em 0 .5em}
a{color:var(--accent)}
ul{padding-left:1.2em}li{margin:.4em 0}
.box{border:1px solid var(--line);border-radius:8px;padding:12px 16px;margin:1.5em 0}
.muted{color:var(--muted);font-size:.9rem}
footer{border-top:1px solid var(--line);margin-top:3em;padding-top:1em}
footer a{margin-right:1.2em}