:root { color-scheme: light dark; }
body { margin: 0; font: 16px/1.6 system-ui, 'Segoe UI', Roboto, sans-serif; background: #f7f7f5; color: #1c1c1a; }
main { max-width: 42rem; margin: 0 auto; padding: 3rem 1rem; }
h1 { font-size: 1.75rem; line-height: 1.25; }
code { font-family: ui-monospace, Consolas, monospace; font-size: 0.9em; }
a { color: #1d5fb8; }
@media (prefers-color-scheme: dark) {
  body { background: #151514; color: #ecece8; }
  a { color: #8ab4f8; }
}