:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #6e6e73; --bg: #fbfbfd; --link: #0a64d8; }
@media (prefers-color-scheme: dark) { :root { --fg: #f5f5f7; --muted: #a1a1a6; --bg: #161618; --link: #4c9cff; } }
body { margin: 0; background: var(--bg); color: var(--fg);
  font: 16px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 24px 96px; }
h1 { font-size: 34px; line-height: 1.15; margin: 8px 0 4px; letter-spacing: -0.02em; }
h2 { font-size: 21px; margin: 36px 0 8px; }
h3 { font-size: 17px; margin: 24px 0 4px; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
code { font: 14px ui-monospace, "SF Mono", Menlo, monospace; }
.meta, .crumb { color: var(--muted); font-size: 14px; }