:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", sans-serif; color: #172033; background: #f6f8fb; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.72; }
main { width: min(860px, calc(100% - 32px)); margin: 0 auto; padding: 44px 0 64px; }
header { border-bottom: 1px solid #dfe5ef; margin-bottom: 28px; padding-bottom: 22px; }
h1 { font-size: 30px; line-height: 1.25; margin: 0 0 10px; }
h2 { font-size: 20px; line-height: 1.35; margin: 32px 0 10px; }
h3 { font-size: 16px; margin: 22px 0 6px; }
p, li { font-size: 16px; }
.muted { color: #5d687b; }
.card { background: white; border: 1px solid #dfe5ef; border-radius: 14px; margin: 18px 0; padding: 18px 20px; }
ul { padding-left: 1.35em; }
a { color: #1455c0; }
footer { border-top: 1px solid #dfe5ef; color: #5d687b; font-size: 14px; margin-top: 40px; padding-top: 20px; }
.notice { max-width: 680px; }
@media (max-width: 520px) { main { width: min(100% - 28px, 860px); padding-top: 28px; } h1 { font-size: 26px; } }