:root { --bg: #fdfdfc; --fg: #1d1d1b; --muted: #5c5c57; --link: #1f5fbf; --rule: #e3e2dd; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #161615; --fg: #e8e7e3; --muted: #a3a29c; --link: #7fb0ff; --rule: #2e2e2b; }
}
* { 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 1rem 4rem; }
h1 { font-size: 1.9rem; line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.2rem; margin: 2.2rem 0 0.5rem; }
p, li { color: var(--fg); }
.lede, .meta { color: var(--muted); }
a { color: var(--link); }
nav { display: flex; gap: 1.25rem; flex-wrap: wrap; padding-bottom: 1rem; margin-bottom: 2rem; border-bottom: 1px solid var(--rule); }
nav a { text-decoration: none; }
footer { margin-top: 3rem; padding-top: 1rem; border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.9rem; }
code { font-size: 0.9em; }