:root { font-family: system-ui, sans-serif; color: #172b37; background: #f4f6f7; }
body { margin: 0; }
main { max-width: 44rem; margin: 12vh auto; padding: 2rem; }
h1 { font-size: 2.5rem; letter-spacing: -.04em; }
p { line-height: 1.6; }