:root { color-scheme: light; font-family: Inter, ui-sans-serif, system-ui, sans-serif; color: #172b4d; background: #f7f8fa; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.6; }
header { background: #0c66e4; color: white; padding: 3.5rem 1.5rem; }
header div, main, footer { max-width: 760px; margin: auto; }
h1 { margin: 0 0 .5rem; line-height: 1.2; }
h2 { margin-top: 2.25rem; line-height: 1.25; }
header p { margin: 0; font-size: 1.1rem; }
main { background: white; margin-top: 2rem; margin-bottom: 2rem; padding: 2rem; border-radius: 10px; box-shadow: 0 1px 3px #091e4226; }
a { color: #0c66e4; }
nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.25rem; }
nav a { color: white; font-weight: 600; }
footer { color: #5e6c84; padding: 0 1.5rem 2rem; font-size: .9rem; }
code { background: #f1f2f4; border-radius: 3px; padding: .1rem .25rem; }
@media (max-width: 600px) { header { padding: 2.5rem 1.25rem; } main { margin: 1rem; padding: 1.5rem; } }