:root { color-scheme: light dark }
body { font: 16px/1.5 system-ui, sans-serif; margin: 0; padding: 1.5rem }
main { max-width: 46rem; margin: 0 auto }
pre { padding: .75rem; border-radius: .375rem; overflow-x: auto;
      background: color-mix(in srgb, currentColor 8%, transparent) }