:root { color-scheme: light dark; }
body { font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; max-width: 640px; margin: 48px auto; padding: 0 16px; }
h1 { font-size: 28px; margin-bottom: 4px; }
p.updated, footer { color: #777; font-size: 14px; }
footer { margin-top: 48px; }