:root { color-scheme: light dark; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #f6f7f9; color: #1f2933; }
main { width: min(720px, calc(100vw - 40px)); }
h1 { margin: 0 0 14px; font-size: 42px; line-height: 1.05; letter-spacing: 0; }
p { font-size: 18px; line-height: 1.55; color: #44515f; }
section { margin-top: 32px; border-top: 1px solid #d9dee5; padding-top: 24px; }
h2 { font-size: 18px; margin: 0 0 8px; letter-spacing: 0; }
@media (prefers-color-scheme: dark) { body { background: #101418; color: #edf1f5; } p { color: #b8c2cc; } section { border-color: #29323b; } }