:root {
  --bg: #ffffff;
  --paper: #f7f7f2;
  --panel: #ffffff;
  --text: #1f2530;
  --muted: #667085;
  --line: #dfe4dc;
  --accent: #27665d;
  --accent-2: #8a5a21;
  --accent-soft: #ecf6f2;
  --warn-soft: #fff8e8;
  --warn-line: #ead08b;
  --shadow: 0 14px 34px rgba(31, 37, 48, 0.08);
}
* { box-sizing: border-box; }
html { overflow-x: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.85;
  overflow-x: hidden;
}
a, h1, h2, p, li, summary, span, strong { overflow-wrap: anywhere; }
a { color: var(--accent); text-decoration-thickness: 0.08em; text-underline-offset: 0.2em; }
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.site-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 800;
  text-decoration: none;
  white-space: nowrap;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--accent-soft);
  color: #174a43;
  font-size: 17px;
  letter-spacing: 0;
}
.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 16px;
  font-size: 14px;
}
.site-nav a { color: var(--muted); text-decoration: none; }
main {
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 34px 0 60px;
}
.article-page { max-width: 960px; }
.hero { padding: 14px 0 26px; }
.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-size: 14px;
  font-weight: 700;
}
h1 {
  max-width: 900px;
  margin: 0 0 16px;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.18;
  letter-spacing: 0;
}
.lead {
  max-width: 850px;
  margin: 0 0 18px;
  color: #384250;
  font-size: 18px;
}
.notice {
  max-width: 920px;
  margin: 18px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--warn-line);
  border-radius: 8px;
  background: var(--warn-soft);
  color: #594719;
  font-size: 14px;
}
.home-routes, .related, .guide-links, .faq { margin-top: 32px; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.card-grid.small { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.route-card, .mini-card, .content-card, details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.route-card, .mini-card {
  display: block;
  min-width: 0;
  padding: 18px;
  color: var(--text);
  text-decoration: none;
}
.route-card strong, .route-card span, .mini-card span { display: block; }
.route-card strong { margin-bottom: 6px; font-size: 18px; line-height: 1.45; }
.route-card span, .mini-card span { color: var(--muted); font-size: 15px; }
.content-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}
.content-card { padding: 22px; }
h2 { margin: 0 0 10px; font-size: 24px; line-height: 1.35; letter-spacing: 0; }
.content-card p, details p, .guide-links p { margin: 0; }
.content-card ul { margin: 0; padding-left: 1.2em; }
.guide-list { display: flex; flex-wrap: wrap; gap: 10px; }
.guide-list a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--text);
  text-decoration: none;
  font-size: 14px;
}
details { margin-top: 10px; padding: 14px 16px; }
summary { cursor: pointer; font-weight: 700; }
summary + p { margin-top: 8px; color: var(--muted); }
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--paper);
}
.footer-inner {
  width: calc(100% - 32px);
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 0;
}
.footer-notice {
  margin: 0 0 16px;
  color: #384250;
  font-size: 14px;
}
.footer-nav { display: flex; flex-wrap: wrap; gap: 10px 16px; font-size: 14px; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.copyright { margin: 16px 0 0; color: var(--muted); font-size: 13px; }
@media (max-width: 900px) {
  .card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .site-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    justify-content: stretch;
    width: 100%;
    gap: 8px 10px;
  }
  .site-nav a {
    min-width: 0;
    padding: 2px 0;
  }
  main { padding-top: 24px; }
  h1 { font-size: 30px; }
  .lead { font-size: 16px; }
  .card-grid, .card-grid.small, .content-blocks { grid-template-columns: 1fr; }
  .route-card, .mini-card, .content-card { padding: 16px; }
}