:root { color-scheme: light dark; }
body { margin: 0; font: 16px/1.6 system-ui, sans-serif; background: Canvas; color: CanvasText; }
main { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; }
h1 { line-height: 1.2; }
h2 { margin-top: 2em; }
a { color: #e8730c; }
.muted { opacity: .7; }