:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif; color: #17352f; background: #f7f9f7; }
* { box-sizing: border-box; }
body { margin: 0; line-height: 1.8; }
a { color: #145a50; text-underline-offset: 3px; }
a:hover { color: #a34235; }
.site-header { background: #fff; border-bottom: 1px solid #dae3de; }
.header-inner, .site-footer-inner { max-width: 1060px; margin: auto; padding: 14px 24px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { font-size: 17px; font-weight: 750; color: #173d35; text-decoration: none; white-space: nowrap; }
.brand-mark { display: inline-grid; place-items: center; width: 30px; height: 30px; margin-right: 9px; border-radius: 6px; background: #174f45; color: white; }
.site-nav { display: flex; flex-wrap: wrap; gap: 12px 20px; font-size: 14px; }
.site-nav a { text-decoration: none; }
main { max-width: 1060px; margin: auto; padding: 0 24px 72px; }
.intro { padding: 44px 0 34px; border-bottom: 1px solid #d9e4dc; }
.eyebrow { font-size: 13px; font-weight: 700; color: #9b6b35; }
h1 { max-width: 760px; margin: 7px 0 14px; font-size: clamp(30px, 4vw, 44px); line-height: 1.3; letter-spacing: 0; }
.lead { max-width: 760px; margin: 0; font-size: 17px; color: #536b63; }
.breadcrumb { padding-top: 22px; font-size: 13px; color: #61776d; }
.breadcrumb a { color: #536b63; }
.layout { display: grid; grid-template-columns: minmax(0, 690px) minmax(180px, 1fr); gap: 48px; align-items: start; }
.article { min-width: 0; }
.article section { padding: 30px 0; border-bottom: 1px solid #d9e4dc; }
h2 { margin: 0 0 12px; font-size: 23px; line-height: 1.4; }
h3 { margin: 22px 0 6px; font-size: 17px; }
p { margin: 0 0 15px; }
p:last-child { margin-bottom: 0; }
ol, ul { margin: 0; padding-left: 1.4em; }
li + li { margin-top: 8px; }
.note { padding: 14px 17px; border-left: 3px solid #b06647; background: #f8f1ec; color: #59453c; }
.aside { position: sticky; top: 18px; padding-top: 30px; font-size: 14px; }
.aside-title { margin: 0 0 10px; font-size: 13px; font-weight: 700; color: #72867d; }
.aside a { display: block; padding: 9px 0; border-bottom: 1px solid #d9e4dc; text-decoration: none; }
.guide-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; padding: 30px 0; }
.guide { min-height: 174px; padding: 18px; background: #fff; border: 1px solid #d9e4dc; border-radius: 6px; color: inherit; text-decoration: none; }
.guide:hover { border-color: #33796b; color: inherit; }
.guide-symbol { display: inline-grid; place-items: center; width: 42px; height: 42px; margin-bottom: 12px; border-radius: 6px; background: #e4efea; color: #19594e; font-weight: 700; font-size: 20px; }
.guide:nth-child(2) .guide-symbol { background: #f3eada; color: #825d28; }
.guide:nth-child(3) .guide-symbol { background: #f3e6e0; color: #994c3c; }
.guide strong { display: block; font-size: 18px; }
.guide span:last-child { display: block; margin-top: 5px; font-size: 14px; color: #61776d; line-height: 1.5; }
.flow { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; margin: 4px 0 20px; padding: 0; color: #285e53; font-size: 14px; }
.flow span { padding: 5px 11px; border: 1px solid #c6d9cf; border-radius: 4px; background: #edf4ef; }
.flow b { color: #947347; font-weight: 500; }
.site-footer { border-top: 1px solid #d9e4dc; background: #fff; color: #61776d; font-size: 13px; }
.site-footer-inner { align-items: flex-start; }
@media (max-width: 720px) {
  .header-inner, .site-footer-inner { padding: 12px 16px; }
  .header-inner { align-items: flex-start; flex-direction: column; gap: 7px; }
  main { padding: 0 16px 50px; }
  .intro { padding: 30px 0 25px; }
  .lead { font-size: 16px; }
  .layout { display: block; }
  .aside { position: static; padding-top: 24px; }
  .guide-list { grid-template-columns: 1fr; gap: 9px; }
  .guide { min-height: 0; }
  .site-footer-inner { flex-direction: column; gap: 5px; }
}