:root { color: #172033; background: #ffffff; font-family: Arial, "Microsoft YaHei", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.65; }
a { color: #0c49f5; }
a:focus-visible { outline: 2px solid #0c49f5; outline-offset: 3px; }
.site-header, main, .site-footer { width: min(100% - 40px, 920px); margin: 0 auto; }
.site-header { padding: 28px 0; border-bottom: 1px solid #dfe5ef; }
.site-header a { color: inherit; text-decoration: none; font-weight: 700; }
.site-nav { display: flex; flex-wrap: wrap; gap: 14px 20px; margin-top: 12px; }
.site-nav a { font-weight: 400; }
main { padding: 52px 0; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); line-height: 1.15; margin: 0 0 20px; }
h2 { font-size: 1.5rem; margin: 40px 0 14px; }
h3 { font-size: 1.15rem; margin: 0 0 8px; }
p { margin: 0 0 16px; }
.lead { font-size: 1.125rem; color: #49566d; max-width: 720px; }
.list { display: grid; gap: 16px; margin-top: 28px; }
.card { border: 1px solid #dfe5ef; padding: 22px; }
.meta { color: #58657a; font-size: 0.95rem; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.tags li { background: #eef3ff; padding: 4px 10px; }
.site-footer { padding: 24px 0 40px; border-top: 1px solid #dfe5ef; color: #58657a; font-size: 0.9rem; }
address { font-style: normal; }
@media (max-width: 600px) { .site-header, main, .site-footer { width: min(100% - 32px, 920px); } main { padding: 36px 0; } }