:root { color-scheme: light; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; color: #172335; background: #f7f9fc; line-height: 1.65; }
main { max-width: 760px; margin: 3rem auto; padding: 2.5rem; background: white; border: 1px solid #dce3ec; border-radius: 12px; }
h1, h2 { line-height: 1.25; }
h1 { margin-top: 0; }
h2 { margin-top: 2rem; font-size: 1.2rem; }
a { color: #145aa3; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-bottom: 2rem; }
.meta { color: #526176; }
@media (max-width: 800px) { main { margin: 0; padding: 1.5rem; border: 0; border-radius: 0; } }