:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #17212b;
  background: #f4f7f8;
  line-height: 1.55;
}

* { box-sizing: border-box; }
body { margin: 0; }
a { color: #075c78; }
header, main, footer { width: min(960px, calc(100% - 32px)); margin-inline: auto; }
header { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-block: 22px; }
header nav { display: flex; flex-wrap: wrap; gap: 14px; }
.brand { color: #17212b; font-size: 1.25rem; font-weight: 750; text-decoration: none; }
.intro { margin: 20px 0 42px; padding: clamp(24px, 5vw, 48px); color: white; background: #12637c; border-radius: 18px; }
.intro h1 { max-width: 720px; margin-top: 0; font-size: clamp(2rem, 5vw, 3.5rem); line-height: 1.05; }
.intro p { max-width: 720px; }
.primary { display: inline-block; padding: 11px 17px; color: #123; background: white; border-radius: 8px; font-weight: 700; text-decoration: none; }
.notice { margin-top: 28px; font-size: .92rem; opacity: .9; }
.section-title { margin-bottom: 20px; font-size: 1.75rem; }
.route { margin-bottom: 14px; padding: 22px; background: white; border: 1px solid #dce4e7; border-radius: 12px; }
.route h2 { margin: 0 0 12px; font-size: 1.25rem; }
.route dl { margin: 0; }
.route dl div { display: grid; grid-template-columns: minmax(90px, 130px) 1fr; gap: 10px; padding-block: 4px; }
.route dt { font-weight: 700; }
.route dd { margin: 0; }
.map-link { display: inline-block; margin-top: 12px; }
footer { margin-top: 36px; padding: 26px 0 50px; color: #52616b; border-top: 1px solid #cfdade; font-size: .9rem; }

@media (max-width: 560px) {
  header { align-items: flex-start; flex-direction: column; }
  .route dl div { display: block; }
  .route dd { margin-top: 2px; }
}