:root { color-scheme: light; font-family: system-ui, sans-serif; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #e6f6ae; }
main { max-width: 42rem; margin: 1rem; padding: 2rem; background: white; border-radius: 1rem; }
h1 { color: #156994; }