:root { color-scheme: light; font-family: system-ui, sans-serif; color: #1e293b; background: #f6faf6; }
body { margin: 0; line-height: 1.75; }
main { max-width: 48rem; margin: 3rem auto; padding: 2rem; background: white; border: 1px solid #dde9dd; border-radius: 1.5rem; }
h1, h2 { color: #143c30; line-height: 1.25; }
h1 { font-size: 2rem; }
h2 { margin-top: 2rem; font-size: 1.25rem; }
a { color: #0c4a6e; overflow-wrap: anywhere; }
a:focus-visible { outline: 3px solid #0284c7; outline-offset: 4px; }
.back { display: inline-block; margin-bottom: 1rem; }
@media (max-width: 600px) { main { margin: 1rem; padding: 1.25rem; } }