/* 下層カテゴリー共通 */
.page-hero {
  padding: 72px 0 62px;
  color: white;
  background:
    radial-gradient(circle at 82% 18%, rgba(215, 182, 80, 0.34), transparent 18%),
    linear-gradient(135deg, var(--green-900), var(--green-700));
}
.breadcrumb {
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.78rem;
}
.breadcrumb li:not(:last-child)::after {
  margin-left: 8px;
  content: "›";
}
.page-hero .section-kicker { color: var(--gold); }
.page-hero h1 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.2rem);
  line-height: 1.3;
  letter-spacing: 0.03em;
}
.page-hero p:last-child {
  max-width: 720px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, 0.86);
}
.page-main { padding-block: 72px 100px; }
.content-gateway { padding-top: 64px; }
.page-intro {
  display: grid;
  grid-template-columns: 1fr 0.72fr;
  gap: 42px;
  align-items: center;
  margin-bottom: 76px;
}
.page-intro h2,
.content-heading h2 {
  margin: 0 0 18px;
  color: var(--green-900);
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.45;
}
.page-intro p { color: var(--muted); }
.page-symbol {
  display: grid;
  min-height: 230px;
  place-items: center;
  color: white;
  background: var(--green-100);
  border-radius: var(--radius-large);
}
.page-symbol span {
  display: grid;
  width: 110px;
  height: 110px;
  place-items: center;
  background: var(--green-700);
  border-radius: 50% 50% 50% 28px;
  font-size: 2.6rem;
  font-weight: 800;
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 30px 0 76px;
}
.guide-card {
  min-height: 190px;
  padding: 28px;
  background: white;
  border: 1px solid var(--line);
  border-radius: var(--radius-medium);
}
.guide-card strong {
  display: block;
  margin-bottom: 8px;
  color: var(--green-900);
  font-size: 1.05rem;
}
.guide-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}
.portal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 30px 0 76px;
}
.portal-card {
  display: flex;
  min-height: 145px;
  padding: 22px;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  background: white;
  border: 1px solid var(--line);
  border-top: 4px solid var(--green-700);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  transition: transform 160ms ease, box-shadow 160ms ease;
}
.portal-card:hover,
.portal-card:focus-visible {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}
.portal-card span {
  color: var(--orange);
  font-size: 0.72rem;
  font-weight: 800;
}
.portal-card strong {
  color: var(--green-900);
  font-size: 1rem;
}
.portal-card small {
  color: var(--muted);
  font-size: 0.76rem;
}
.preparing-box {
  padding: 54px 24px;
  background: var(--paper-warm);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  text-align: center;
}
.preparing-box h2 {
  margin: 0 0 10px;
  color: var(--green-900);
}
.preparing-box p {
  margin: 0 auto 24px;
  max-width: 650px;
  color: var(--muted);
}
.related-nav {
  margin-top: 72px;
  padding-top: 38px;
  border-top: 1px solid var(--line);
}
.related-nav h2 {
  color: var(--green-900);
  font-size: 1.25rem;
}
.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.related-links a {
  padding: 9px 15px;
  color: var(--green-800);
  background: var(--green-100);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 700;
}
.event-article-grid {
  grid-template-columns: minmax(0, 760px);
  margin-top: 30px;
}
.event-application-cta {
  display: flex;
  margin: 0 0 64px;
  padding: 28px 30px;
  align-items: center;
  justify-content: space-between;
  gap: 26px;
  background: linear-gradient(135deg, #f5f9e9, #fff8e9);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
}
.event-application-cta h2 { margin: 4px 0 8px; color: var(--green-900); font-size: 1.3rem; }
.event-application-cta p:last-child { margin: 0; color: var(--muted); font-size: .82rem; }
.event-application-cta .button { flex: 0 0 auto; justify-content: center; }
.site-header .brand-name { white-space: nowrap; }
@media (max-width: 720px) {
  .page-hero { padding: 48px 0 44px; }
  .page-main { padding-block: 52px 75px; }
  .page-intro { grid-template-columns: 1fr; gap: 24px; margin-bottom: 55px; }
  .page-symbol { min-height: 180px; }
  .guide-grid { grid-template-columns: 1fr; margin-bottom: 55px; }
  .guide-card { min-height: auto; }
  .portal-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); margin-bottom: 55px; }
  .portal-card { min-height: 150px; padding: 17px; }
  .event-application-cta { align-items: stretch; flex-direction: column; padding: 24px 20px; }
}