/* 搜索与数量同排，系列与二级分类分层展示。 */
.catalogue { padding-top: 32px; }
.catalogue-tools { display: grid; grid-template-columns: minmax(0, 1fr); justify-content: stretch; gap: 24px; }
.catalogue-toolbar-head { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.catalogue .result-count { margin: 0; font-size: 14px; }
.catalogue .filter-group { display: flex; flex-wrap: wrap; gap: 8px; }
.catalogue .filter { flex: 0 0 auto; min-height: 44px; padding: 10px 16px; border-radius: var(--radius); border: 1px solid var(--line); background: #fff; font-size: 14px; white-space: nowrap; transition: color var(--motion), border-color var(--motion), background var(--motion); }
.catalogue .filter:hover { border-color: #9db6f3; color: var(--blue); }
.catalogue .filter.active { background: var(--blue); color: #fff; border-color: var(--blue); }
.catalogue .search-box { position: relative; display: flex; align-items: center; flex: 0 1 340px; margin: 0; }
.catalogue .search-box > svg { position: absolute; left: 14px; pointer-events: none; color: var(--muted); }
.catalogue .search-box input { min-width: 0; width: 100%; min-height: 46px; padding: 11px 14px 11px 43px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; font-size: 14px; }
.catalogue-grid { margin-top: 32px; }
.catalogue-results { margin-top: 40px; }
.catalogue-section[hidden] { display: none; }
.catalogue-level-2 + .catalogue-level-2 { margin-top: 64px; }
.catalogue-level-3 + .catalogue-level-3 { margin-top: 48px; }
.catalogue-level-4 + .catalogue-level-4 { margin-top: 36px; }
.catalogue-section-title { margin: 0; line-height: 1.45; }
.catalogue-level-2 > .catalogue-section-title { padding-bottom: 16px; margin-bottom: 28px; border-bottom: 1px solid var(--line); font-size: 28px; }
.catalogue-level-3 > .catalogue-section-title { margin-bottom: 20px; padding-left: 12px; border-left: 3px solid var(--blue); font-size: 21px; }
.catalogue-level-4 > .catalogue-section-title { margin-bottom: 16px; color: var(--muted); font-size: 16px; font-weight: 600; }
.catalogue-section > .catalogue-grid { margin-top: 0; }
.catalogue .product-card :is(h3, h4, h5) { font-size: 22px; line-height: 1.4; margin: 0 0 15px; letter-spacing: -.03em; }
/* 宽屏目录每行四张卡片，窄屏沿用三列、两列和单列布局。 */
@media (min-width: 1251px) {
  .catalogue .catalogue-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
  .catalogue .product-card-copy { padding: 20px; }
  .catalogue .product-card :is(h3, h4, h5) { font-size: 20px; margin-bottom: 12px; }
  .catalogue .product-card p { margin-bottom: 20px; }
  .catalogue .product-card-bottom { gap: 12px; }
}
@media (min-width: 721px) and (max-width: 1250px) { .catalogue .product-card :is(h3, h4, h5) { font-size: 21px; } }
@media (max-width: 720px) {
  .catalogue-results { margin-top: 28px; }
  .catalogue-level-2 + .catalogue-level-2 { margin-top: 44px; }
  .catalogue-level-2 > .catalogue-section-title { font-size: 24px; }
  .catalogue-level-3 > .catalogue-section-title { font-size: 19px; }
}
.catalogue .empty-results { margin-top: 32px; border-radius: var(--radius); }
.mobile-process-filter { display: none; }
.catalogue-subfilters { display: flex; flex-wrap: wrap; gap: 8px; padding: 16px; border-left: 2px solid var(--blue); background: var(--surface, #f4f6fa); }
.catalogue-subfilters[hidden] { display: none; }
.catalogue-familyfilters { display: flex; flex-wrap: wrap; gap: 8px; margin: -12px 0 0 16px; padding: 12px 16px; border-left: 2px solid var(--line); }
.catalogue-familyfilters[hidden] { display: none; }
.catalogue .subfilter { min-height: 44px; padding: 10px 14px; border: 1px solid transparent; border-radius: var(--radius); background: transparent; color: var(--muted); font: inherit; font-size: 14px; cursor: pointer; }
.catalogue .subfilter:hover { color: var(--blue); }
.catalogue .subfilter.active { border-color: var(--line); background: #fff; color: var(--blue); }
.product-subgroup { display: inline-block; margin: 0 8px 8px 0; color: var(--blue); font-size: 12px; }
@media (max-width: 720px) { .catalogue { padding-top: 28px; } .catalogue-toolbar-head { flex-direction: column; align-items: stretch; gap: 16px; } .catalogue .search-box { flex-basis: auto; } .catalogue .search-box input { font-size: 16px; } .catalogue .filter-group { gap: 8px; } .catalogue .filter { font-size: 13px; padding: 10px 13px; } }
@media (max-width: 720px) {
  .catalogue .filter-group { display: none; }
  .mobile-process-filter { position: relative; display: block; min-width: 0; }
  .mobile-process-filter select { display: block; width: 100%; min-width: 0; min-height: 48px; appearance: none; padding: 12px 44px 12px 14px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; color: var(--ink); font: inherit; font-size: 16px; line-height: 1.4; cursor: pointer; transition: border-color var(--motion); }
  .mobile-process-filter select:hover { border-color: #9db6f3; }
  .mobile-process-filter > svg { position: absolute; right: 14px; top: 50%; width: 20px; height: 20px; transform: translateY(-50%); fill: none; stroke: var(--blue); stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
}