:root { --ink:#2b2a26; --muted:#6f6a60; --bg:#faf8f3; --line:#e4ded1; --accent:#3a6ea5; color-scheme: light; }
@media (prefers-color-scheme: dark) { :root { --ink:#e8e4da; --muted:#a39d91; --bg:#1c1b19; --line:#35332e; --accent:#8fb3dc; color-scheme: dark; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--ink); font:17px/1.6 Georgia, "Times New Roman", serif; }
main { max-width: 40rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
nav { font: 14px/1.4 system-ui, sans-serif; margin-bottom: 2.5rem; }
nav a { margin-right: 1rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .5rem; }
p, li { max-width: 38rem; }
a { color: var(--accent); }
.muted { color: var(--muted); font-size: .9rem; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--line); font: 13px/1.5 system-ui, sans-serif; color: var(--muted); }