:root{--bg:#fafaf9;--fg:#1c1917;--muted:#57534e;--accent:#0f766e}
@media (prefers-color-scheme:dark){:root{--bg:#161412;--fg:#f5f5f4;--muted:#a8a29e;--accent:#2dd4bf}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}
main{max-width:640px;margin:0 auto;padding:72px 20px}
h1{font-size:2rem;letter-spacing:-.02em;margin:0 0 .5rem}
h2{font-size:1.1rem;margin:2rem 0 .25rem}
p,li{color:var(--muted)}
a{color:var(--accent)}
footer{margin-top:3rem;font-size:.9rem}