:root { --bg: #f4f4f0; --fg: #1c1d21; --dim: #6b6d72; --line: #dcdcd6; --accent: #2f6fe4; }
@media (prefers-color-scheme: dark) {
  :root { --bg: #1c1d21; --fg: #e9e9e6; --dim: #9a9ca1; --line: #34363c; --accent: #7aa7ff; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px 80px; }
nav { max-width: 680px; margin: 0 auto; padding: 20px 20px 0; display: flex; gap: 20px; font-size: 15px; }
nav a.home { font-weight: 600; color: var(--fg); margin-right: auto; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 32px; line-height: 1.2; margin: 0 0 8px; }
h2 { font-size: 20px; margin: 40px 0 8px; padding-top: 24px; border-top: 1px solid var(--line); }
p, li { margin: 0 0 12px; }
ul, ol { padding-left: 22px; }
.dim { color: var(--dim); }
code { font: 14px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; background: rgba(127,127,127,.15); padding: 2px 5px; border-radius: 4px; overflow-wrap: anywhere; }
footer { max-width: 680px; margin: 0 auto; padding: 0 20px 40px; font-size: 14px; color: var(--dim); }