:root { color-scheme: light dark; --bg:#fff; --fg:#1b1b1f; --muted:#5b5b66; --line:#e3e3e8; --accent:#2b5fd9; }
@media (prefers-color-scheme: dark) { :root { --bg:#141418; --fg:#ececf1; --muted:#a2a2b0; --line:#2b2b33; --accent:#8fb0ff; } }
* { box-sizing: border-box; }
body { margin:0; background:var(--bg); color:var(--fg); font:17px/1.6 system-ui,-apple-system,"Segoe UI",sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0 0 .5rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 .4rem; }
p, li { margin: .5rem 0; }
.muted { color: var(--muted); }
a { color: var(--accent); }
footer { border-top: 1px solid var(--line); margin-top: 3rem; padding-top: 1rem; color: var(--muted); font-size: .9rem; }
code { background: color-mix(in srgb, var(--fg) 8%, transparent); padding: .1rem .35rem; border-radius: 4px; font-size: .92em; }