/* 상위 메뉴 공통 셸 — 제품 자료 · 적용 사례 · 사례 상세 */
.site-subpage {
  --subpage-accent: #0f4f9f;
  --subpage-bg: #f4f7fb;
  --subpage-panel-border: #dbe5ee;
  --subpage-panel-shadow: 0 8px 24px rgba(10, 37, 64, .06);
}

.site-subpage--catalog {
  --subpage-accent: #0f4f9f;
}

.site-subpage--projects {
  --subpage-accent: #106878;
}

.site-subpage .subpage-main {
  padding-top: 76px;
  min-height: calc(100vh - 76px);
  background: var(--subpage-bg);
}

.site-subpage .subpage-main__inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 1rem 1rem 1.5rem;
}

.site-subpage .subpage-head {
  margin: 0 0 1.15rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e2e8f0;
}

.site-subpage .subpage-head .section-eyebrow {
  color: var(--subpage-accent);
}

.site-subpage .subpage-head .section-title {
  margin: .35rem 0 .45rem;
  font-size: clamp(1.45rem, 2.8vw, 2rem);
}

.site-subpage .subpage-head .section-desc {
  margin: 0;
  max-width: 720px;
  font-size: .95rem;
  line-height: 1.65;
}

.site-subpage .subpage-crumb,
.site-subpage .catalog-browser__crumb,
.site-subpage .project-detail__crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .45rem;
  margin: 0 0 .75rem;
  font-size: .88rem;
  color: #64748b;
}

.site-subpage .subpage-crumb a,
.site-subpage .catalog-browser__crumb a,
.site-subpage .project-detail__crumb a {
  color: var(--subpage-accent);
  font-weight: 700;
  text-decoration: none;
}

.site-subpage .subpage-crumb a:hover,
.site-subpage .catalog-browser__crumb a:hover,
.site-subpage .project-detail__crumb a:hover {
  text-decoration: underline;
}

.site-subpage .subpage-crumb [aria-current="page"],
.site-subpage .catalog-browser__crumb [aria-current="page"] {
  color: #334155;
  font-weight: 600;
}

.site-subpage .catalog-tree,
.site-subpage .catalog-viewer {
  border-color: var(--subpage-panel-border);
  box-shadow: var(--subpage-panel-shadow);
}

.site-subpage .catalog-tree__head,
.site-subpage .catalog-viewer__toolbar {
  border-bottom-color: #e8eef4;
  background: linear-gradient(180deg, #fafcff, #fff);
}

.site-subpage .catalog-tree__head {
  color: var(--subpage-accent);
}

.site-subpage .catalog-tree__node.is-active {
  background: color-mix(in srgb, var(--subpage-accent) 10%, #fff);
  color: var(--subpage-accent);
}

.site-subpage .btn--primary {
  background: var(--subpage-accent);
  color: #fff;
  border: 0;
}

.site-subpage .btn--primary:hover {
  filter: brightness(.92);
}

.site-subpage .btn--outline {
  border: 1px solid color-mix(in srgb, var(--subpage-accent) 35%, #cbd5e1);
  background: #fff;
  color: var(--subpage-accent);
}

.site-subpage .btn--outline:hover {
  background: color-mix(in srgb, var(--subpage-accent) 8%, #fff);
}

.site-subpage .project-detail {
  padding: 0;
}

.site-subpage .project-detail__title {
  color: var(--n);
}

@media (max-width: 900px) {
  .site-subpage .subpage-main {
    padding-top: 68px;
    min-height: calc(100vh - 68px);
  }

  .site-subpage .subpage-main__inner {
    padding: .85rem .85rem 1.25rem;
  }
}