:root { color-scheme: light dark; --bg: #ffffff; --fg: #1a1a1a; --muted: #5a5a5a; --line: #e2e2e2; --link: #0b57d0; }
@media (prefers-color-scheme: dark) { :root { --bg: #121212; --fg: #ececec; --muted: #a8a8a8; --line: #2c2c2c; --link: #8ab4f8; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 42rem; margin: 0 auto; padding: 2rem 1rem 4rem; }
header.site { border-bottom: 1px solid var(--line); }
header.site div { max-width: 42rem; margin: 0 auto; padding: 1rem; display: flex; gap: 1.25rem; align-items: baseline; flex-wrap: wrap; }
header.site a.brand { font-weight: 700; font-size: 1.15rem; color: var(--fg); text-decoration: none; margin-right: auto; }
header.site a { color: var(--link); }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 .25rem; }
h2 { font-size: 1.25rem; margin: 2rem 0 .5rem; }
p, li { margin: .5rem 0; }
ul { padding-left: 1.25rem; }
a { color: var(--link); }
.meta { color: var(--muted); font-size: .95rem; }
footer { border-top: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
footer div { max-width: 42rem; margin: 0 auto; padding: 1rem; }