:root {
  --bg: #ffffff;
  --paper: #f7f8f5;
  --panel: #ffffff;
  --text: #20242a;
  --muted: #667085;
  --line: #dde4df;
  --accent: #2f665d;
  --accent-2: #735a28;
  --accent-soft: #edf6f2;
  --warn-soft: #fff8e8;
  --warn-line: #e6cc7a;
  --shadow: 0 14px 32px rgba(31, 37, 42, 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 { 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: min(1120px, calc(100% - 32px));
  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: #19443e;
  font-size: 15px;
  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: min(1120px, calc(100% - 32px));
  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: 930px;
  margin: 0 0 16px;
  font-size: clamp(30px, 4.4vw, 48px);
  line-height: 1.2;
  letter-spacing: 0;
}
.lead {
  max-width: 850px;
  margin: 0 0 18px;
  color: #384250;
  font-size: 18px;
}
.notice {
  max-width: 920px;
  margin: 0;
  padding: 13px 15px;
  border: 1px solid var(--warn-line);
  border-radius: 8px;
  background: var(--warn-soft);
  color: #5d4a19;
  font-size: 14px;
}
h2 {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.35;
  letter-spacing: 0;
}
p { margin: 0 0 12px; }
.home-routes,
.content-blocks,
.related,
.guide-links,
.faq { margin-top: 30px; }
.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.card-grid.small { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.route-card,
.mini-card,
.content-card,
.guide-links,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}
.route-card,
.mini-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 112px;
  padding: 18px;
  color: var(--text);
  text-decoration: none;
}
.route-card span,
.mini-card span { color: var(--muted); font-size: 14px; }
.content-blocks {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}
.content-blocks.single { grid-template-columns: 1fr; }
.content-card { padding: 22px; background: linear-gradient(180deg, #fff, var(--paper)); }
.guide-links { padding: 22px; }
.guide-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
}
.guide-list a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--accent-soft);
  text-decoration: none;
  font-size: 14px;
}
.faq details { padding: 16px 18px; margin-top: 10px; }
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin-top: 10px; color: var(--muted); }
.site-footer {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 26px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 12px;
}
@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 { justify-content: flex-start; }
  main { padding-top: 24px; }
  h1 { font-size: 32px; }
  .lead { font-size: 16px; }
  .card-grid,
  .card-grid.small,
  .content-blocks { grid-template-columns: 1fr; }
  .route-card,
  .mini-card { min-height: auto; }
}