body { font: 16px/1.5 system-ui, sans-serif; margin: 0; color: #1d2330; }
header { display: flex; gap: 2rem; align-items: center; padding: 1rem 2rem; border-bottom: 1px solid #e3e6ec; }
nav { display: flex; gap: 1rem; }
nav a { color: #3552c4; text-decoration: none; }
main { padding: 2rem; max-width: 40rem; }