:root { color-scheme: light; --ink: #172423; --muted: #5d6c67; --line: #dce5e1; --green: #0a7a68; --soft: #f2f8f5; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: #f7faf8; font: 16px/1.8 system-ui, -apple-system, "Microsoft YaHei", sans-serif; }
a { color: var(--green); }
.wrap { width: min(1060px, calc(100% - 40px)); margin: auto; }
.top { display: flex; min-height: 72px; align-items: center; justify-content: space-between; gap: 24px; border-bottom: 1px solid var(--line); }
.brand { color: var(--ink); font-weight: 750; text-decoration: none; }.top nav { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; }.top nav a { text-decoration: none; }
main { padding: 62px 0 80px; }.crumb { color: var(--muted); font-size: 13px; }.crumb a { text-decoration: none; }
h1 { max-width: 820px; margin: 20px 0 16px; font-size: clamp(32px, 5vw, 54px); line-height: 1.2; letter-spacing: 0; }.lead { max-width: 760px; color: var(--muted); font-size: 18px; }
.meta { margin: 20px 0 42px; color: var(--muted); font-size: 13px; }.section { padding: 34px 0; border-top: 1px solid var(--line); }.section h2 { margin: 0 0 14px; font-size: 28px; }.section h3 { margin: 22px 0 6px; font-size: 19px; }.section p { max-width: 820px; margin: 8px 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }.item { padding: 20px; background: #fff; border: 1px solid var(--line); border-radius: 6px; }.item h3 { margin-top: 0; }
.note { padding: 18px 20px; background: var(--soft); border-left: 3px solid var(--green); }.links { display: flex; flex-wrap: wrap; gap: 10px 22px; }.links a { font-weight: 650; }.faq details { padding: 14px 0; border-bottom: 1px solid var(--line); }.faq summary { cursor: pointer; font-weight: 650; }
footer { padding: 28px 0 42px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
@media (max-width: 680px) { .wrap { width: min(100% - 28px, 1060px); }.top { align-items: flex-start; flex-direction: column; padding: 16px 0; }.top nav { gap: 10px 15px; }.grid { grid-template-columns: 1fr; } main { padding-top: 38px; } h1 { font-size: 36px; } }