:root { color-scheme: light; font-family: Arial, "Microsoft YaHei", sans-serif; color: #172033; background: #f5f7fa; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.7; }
header { background: #102a43; color: #fff; }
.wrap { width: min(920px, calc(100% - 32px)); margin: 0 auto; }
.top { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { color: #fff; font-size: 20px; font-weight: 700; text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 16px; }
nav a { color: #d9e8f5; text-decoration: none; font-size: 14px; }
main { padding: 48px 0 64px; }
article { background: #fff; padding: 40px; border: 1px solid #e2e8f0; border-radius: 8px; }
h1 { font-size: 34px; line-height: 1.25; margin: 0 0 14px; color: #102a43; }
h2 { margin-top: 36px; color: #102a43; font-size: 23px; }
p, li { color: #3b4859; }
.lead { font-size: 18px; margin-top: 0; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0; }
.button { display: inline-block; background: #087f8c; color: #fff; text-decoration: none; padding: 10px 16px; border-radius: 6px; font-weight: 600; }
.button.secondary { background: #e8f0f5; color: #102a43; }
code { background: #edf2f7; color: #162235; padding: 2px 5px; border-radius: 3px; word-break: break-all; }
pre { background: #102a43; color: #eaf2f8; padding: 18px; overflow-x: auto; border-radius: 6px; }
footer { padding: 24px 0 40px; color: #637381; font-size: 14px; }
@media (max-width: 620px) { article { padding: 25px; } h1 { font-size: 28px; } .top { padding: 14px 0; align-items: flex-start; flex-direction: column; } }