:root{--bg:#fafaf9;--fg:#1c1917;--muted:#57534e;--line:#e7e5e4;--accent:#b45309}
@media (prefers-color-scheme:dark){:root{--bg:#1c1917;--fg:#f5f5f4;--muted:#a8a29e;--line:#44403c;--accent:#f59e0b}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 16px 64px}
h1{font-size:2rem;line-height:1.2;margin:0 0 8px}
h2{font-size:1.2rem;margin:2rem 0 .5rem}
p,li{color:var(--fg)}
.muted{color:var(--muted)}
a{color:var(--accent)}
.card{border:1px solid var(--line);border-radius:10px;padding:16px 20px;margin:16px 0}
footer{border-top:1px solid var(--line);margin-top:48px;padding-top:16px;font-size:.9rem;color:var(--muted)}