:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  font-size: 16px;
  color: #292929;
  background: #fff;
  --secondary: #595959;
  --line: #e8e8e8;
  --brand: #216891;
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--brand); text-decoration: underline; text-underline-offset: 5px; }
a:focus-visible { outline: 2px solid var(--brand); outline-offset: 5px; }
p, h1, h2, dl, dd { margin: 0; }
.shell { width: min(1060px, calc(100% - 80px)); margin-inline: auto; }
.skip-link { position: absolute; z-index: 10; top: 12px; left: 12px; transform: translateY(-200%); padding: 12px; background: #fff; }
.skip-link:focus { transform: translateY(0); }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner { min-height: 80px; display: flex; justify-content: space-between; align-items: center; gap: 24px; padding-block: 16px; }
.brand { display: inline-block; flex-shrink: 0; max-width: 100%; }
.brand img { display: block; width: 260px; height: auto; max-width: 100%; }
.brand:hover { text-decoration: none; }
nav { display: flex; flex-wrap: wrap; gap: 10px 36px; font-size: .9375rem; }
nav a { padding-block: 10px; }
.introduction, .content-section { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 50px; }
.introduction { padding-block: 72px 54px; }
.section-label { font-size: 1rem; font-weight: 500; line-height: 1.8; color: var(--secondary); padding-top: 4px; }
h1 { font-size: 1.875rem; font-weight: 550; line-height: 1.55; letter-spacing: .01em; }
.introduction-copy { margin-top: 26px; max-width: 50em; color: var(--secondary); }
.introduction-copy p { line-height: 2; }
.introduction-copy p + p { margin-top: 14px; }
.content-section { padding-block: 36px; border-top: 1px solid var(--line); }
.business-list { display: grid; gap: 26px; }
.business-list dt { font-size: 1.0625rem; font-weight: 550; line-height: 1.8; margin-bottom: 5px; }
.business-list dd { color: var(--secondary); line-height: 1.9; }
.contact { padding-block: 36px 60px; }
address { font-style: normal; }
.contact-list { display: grid; gap: 18px; }
.contact-list > div { display: grid; grid-template-columns: 80px minmax(0, 1fr); gap: 20px; line-height: 1.9; }
.contact-list dt { color: var(--secondary); }
.phone { color: var(--brand); display: inline-block; font-variant-numeric: tabular-nums; letter-spacing: .025em; }
.site-footer { background: #f7f7f7; border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; padding-block: 25px; font-size: .875rem; color: var(--secondary); line-height: 1.8; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width: 800px) {
  .shell { width: calc(100% - 48px); }
  .introduction, .content-section { grid-template-columns: 110px minmax(0, 1fr); gap: 26px; }
  h1 { font-size: 1.625rem; }
}
@media (max-width: 600px) {
  .shell { width: calc(100% - 40px); }
  .header-inner { flex-wrap: wrap; gap: 10px; padding-block: 20px 12px; }
  .brand img { width: 240px; }
  nav { width: 100%; justify-content: space-between; gap: 8px 20px; font-size: .875rem; }
  .introduction, .content-section { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .introduction { padding-block: 36px; }
  .section-label { font-size: .9375rem; padding: 0; }
  h1 { font-size: 1.5rem; line-height: 1.6; }
  .introduction-copy { margin-top: 20px; }
  .content-section { padding-block: 28px; }
  .content-section > h2 { color: #292929; font-size: 1.125rem; font-weight: 550; }
  .business-list { gap: 22px; }
  .business-list dt { font-size: 1rem; }
  .contact { padding-bottom: 36px; }
  .contact-list > div { grid-template-columns: minmax(0, 1fr); gap: 3px; }
  .contact-list dt { font-size: .875rem; }
  .footer-inner { flex-direction: column; align-items: start; gap: 8px; padding-block: 22px; }
}
@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } }