:root { color-scheme: light dark; }
body { margin: 0; font: 16px/1.6 system-ui, sans-serif; background: Canvas; color: CanvasText; }
main { max-width: 40rem; margin: 0 auto; padding: 2rem 1rem; }
h1 { font-size: 1.6rem; }
h2 { font-size: 1.1rem; margin-top: 1.6rem; }
code { overflow-wrap: anywhere; }