/* HUASHANG catalogue: same brand, a denser product-browsing layout. */
.catalog-family { border-bottom: 1px solid var(--line); grid-column: 1 / -1; }
.catalog-family:last-child { border-bottom: 0; }
.catalog-family-heading { display: flex; align-items: stretch; }
.catalog-family-heading > a { flex: 1; display: flex; gap: 8px; justify-content: space-between; align-items: center; min-width: 0; padding: 16px 8px 16px 16px; font-size: 15px; font-weight: 600; }
.catalog-family-heading > a span { flex-shrink: 0; min-width: 2ch; white-space: nowrap; text-align: right; font-size: 12px; color: #536476; }
.catalog-family-heading button { flex: 0 0 40px; min-height: 48px; border: none; background: transparent; color: var(--navy); font-size: 24px; }
.catalog-family.current .catalog-family-heading { background: var(--gold-light); box-shadow: inset 3px 0 var(--gold); }
.catalog-family-links { padding: 4px 18px 12px; }
.catalog-family-links[hidden] { display: none; }
.catalog-family-links a { display: block; padding: 8px 0; font-size: 14px; color: #536476; }
.catalog-family-links a[aria-current] { color: var(--navy); font-weight: 700; text-decoration: underline; text-underline-offset: 4px; }
.catalog-family-grid { margin-top: 24px; }
.catalog-image-note { margin: 20px 0 0; color: #536476; font-size: 14px; }
.catalog-filters.catalog-filters-simple { grid-template-columns: minmax(0,1.5fr) minmax(0,1fr) auto; }
@media (max-width: 560px) { .catalog-filters.catalog-filters-simple { grid-template-columns: minmax(0,1fr); } }
.catalog-hero { padding: 42px 0 46px; background: var(--navy); color: white; }
.catalog-hero .breadcrumbs { color: #c6d1da; margin-bottom: 24px; }
.catalog-hero-row { display: grid; grid-template-columns: 1.5fr 1fr; gap: 64px; align-items: center; }
.catalog-hero h1 { color: white; font-size: clamp(44px, 5vw, 68px); margin: 8px 0 16px; }
.catalog-hero p { max-width: 660px; margin: 0; color: #d1dae2; font-size: 16px; }
.catalog-hero-note { border-left: 2px solid var(--gold); padding-left: 28px; }
.catalog-hero-note strong { display: block; color: white; font: 600 30px/1.2 'Barlow Condensed', Arial, sans-serif; }
.catalog-hero-note span { display: block; margin-top: 12px; font-size: 14px; color: #d1dae2; }
.catalog-layout { display: grid; grid-template-columns: 238px minmax(0, 1fr); gap: 36px; padding-top: 44px; padding-bottom: 72px; align-items: start; }
.catalog-sidebar { min-width: 0; }
.catalog-sidebar nav { border: 1px solid var(--line); }
.catalog-sidebar h2 { margin: 0; padding: 19px; background: var(--navy); color: white; font-size: 26px; }
.catalog-sidebar nav > a { padding: 15px 18px; display: flex; justify-content: space-between; gap: 12px; border-bottom: 1px solid var(--line); font-size: 15px; font-weight: 600; }
.catalog-sidebar nav > a:last-child { border-bottom: none; }
.catalog-sidebar .catalog-category-current { color: var(--navy); background: var(--gold-light); border-left: 3px solid var(--gold); padding-left: 15px; }
.catalog-subcategories { padding: 7px 18px 12px 24px; border-bottom: 1px solid var(--line); }
.catalog-subcategories a { display: block; padding: 8px 0; color: #536476; font-size: 14px; }
.catalog-subcategories a[aria-current], .catalog-sidebar a:hover { color: var(--navy); text-decoration: underline; text-underline-offset: 4px; }
.catalog-help { background: var(--navy); color: white; padding: 24px 20px; margin-top: 24px; }
.catalog-help h3 { color: white; font-size: 29px; margin: 10px 0; }
.catalog-help p { font-size: 15px; color: #d1dae2; }
.catalog-help .btn { width: 100%; }
.catalog-capability { display: block; font-size: 14px; margin-top: 18px; color: #e2c57f; }
.catalog-main { min-width: 0; }
.catalog-intro h2 { font-size: 34px; margin: 0 0 10px; }
.catalog-intro p { font-size: 15px; color: #536476; margin-bottom: 8px; }
.catalog-source { display: inline-block; color: #536476; font-size: 13px; text-decoration: underline; text-underline-offset: 3px; }
.catalog-filters { display: grid; grid-template-columns: minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) auto; gap: 12px; align-items: end; padding: 20px; background: var(--soft); margin-top: 24px; }
.catalog-filters label { min-width: 0; font-size: 14px; font-weight: 600; }
.catalog-filters input, .catalog-filters select { display: block; width: 100%; height: 44px; border: 1px solid #b6c2ce; padding: 8px 10px; margin-top: 7px; background: white; color: var(--ink); font-size: 16px; border-radius: 0; }
.catalog-filters .btn { min-height: 44px; padding: 0 14px; }
.catalog-results-bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 14px; margin: 20px 0; }
.catalog-results-bar p { margin: 0; color: #536476; }
.catalog-results-bar a { text-decoration: underline; text-underline-offset: 3px; }
.catalog-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.catalog-card { min-width: 0; border: 1px solid var(--line); background: white; display: flex; flex-direction: column; transition: border-color .2s, box-shadow .2s; }
.catalog-card:hover { border-color: var(--gold); box-shadow: 0 8px 24px rgba(15,39,66,.08); }
.catalog-picture { display: block; background: #f5f7f9; aspect-ratio: 4/3; padding: 12px; border-bottom: 1px solid var(--line); }
.catalog-picture img { display: block; height: 100%; width: 100%; object-fit: contain; }
.catalog-card-body { padding: 18px 16px 0; display: flex; flex: 1; flex-direction: column; }
.catalog-card-meta { display: flex; justify-content: space-between; gap: 8px; font-size: 12px; font-weight: 700; letter-spacing: .04em; color: #536476; }
.catalog-card h3 { font-size: 27px; line-height: 1.12; margin: 12px 0 10px; }
.catalog-card p { font-size: 14px; line-height: 1.6; color: #536476; margin-bottom: 20px; }
.catalog-card-links { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; border-top: 1px solid var(--line); padding: 14px 0; margin-top: auto; font-size: 13px; font-weight: 700; }
.catalog-card-links a:hover { text-decoration: underline; }
.catalog-empty { grid-column: 1 / -1; padding: 40px 24px; background: var(--soft); }
.catalog-empty .btn { margin: 8px 8px 0 0; }
.catalog-section { margin-top: 56px; }
.catalog-section h2 { font-size: 36px; margin: 10px 0 16px; }
.catalog-section > p { color: #536476; font-size: 16px; }
.catalog-table-wrap { overflow-x: auto; max-width: 100%; margin-top: 24px; border: 1px solid var(--line); }
.catalog-table { border-collapse: collapse; width: 100%; text-align: left; font-size: 15px; }
.catalog-table caption { text-align: left; padding: 16px 18px; font-weight: 600; background: var(--soft); }
.catalog-table th, .catalog-table td { padding: 15px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
.catalog-table thead { background: var(--navy); color: white; }
.catalog-table tbody th { min-width: 140px; width: 29%; background: var(--soft); font-weight: 600; }
.catalog-table tr:last-child > * { border-bottom: 0; }
.catalog-config-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.catalog-config-grid article { background: var(--soft); padding: 24px; border-top: 2px solid var(--gold); }
.catalog-config-grid article > span { color: #856218; font-size: 14px; font-weight: 700; }
.catalog-config-grid h3 { margin: 10px 0; font-size: 27px; }
.catalog-config-grid p { margin: 0; color: #536476; font-size: 15px; }
.catalog-preparation { margin-top: 56px; background: var(--navy); color: white; padding: 32px; }
.catalog-preparation h2 { color: white; margin: 12px 0; font-size: 36px; }
.catalog-preparation p { color: #d1dae2; font-size: 16px; }
.catalog-preparation ol { margin: 28px 0 0; padding-left: 22px; display: grid; gap: 18px; }
.catalog-preparation li { padding-left: 8px; color: #e2c57f; }
.catalog-preparation strong { display: block; color: white; }
.catalog-preparation li span { display: block; color: #d1dae2; font-size: 15px; margin-top: 4px; }
.catalog-faq details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.catalog-faq summary { cursor: pointer; font-size: 16px; font-weight: 600; }
.catalog-faq details p { margin: 16px 0 0; color: #536476; font-size: 16px; }
.catalog-detail-heading { padding-top: 30px; padding-bottom: 28px; }
.catalog-detail-heading .breadcrumbs { margin-bottom: 14px; }
.catalog-detail { display: grid; grid-template-columns: 1.1fr 1fr; gap: 52px; align-items: start; }
.catalog-detail-image { margin: 0; padding: 26px; background: var(--soft); border: 1px solid var(--line); }
.catalog-detail-image img { width: 100%; height: auto; aspect-ratio: 4/3; object-fit: contain; }
.catalog-detail-image figcaption { margin-top: 18px; font-size: 14px; color: #536476; }
.catalog-detail-image figcaption a { text-decoration: underline; }
.catalog-detail-copy { min-width: 0; }
.catalog-detail-copy h1 { margin: 12px 0 22px; font-size: clamp(38px,4vw,56px); line-height: 1.05; }
.catalog-detail-copy p { font-size: 16px; color: #536476; }
.catalog-detail-badges { display: flex; gap: 10px; flex-wrap: wrap; margin: 22px 0; }
.catalog-detail-badges span { padding: 7px 10px; background: var(--gold-light); font-size: 14px; }
.catalog-detail-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }
.catalog-detail-body { padding-bottom: 64px; }
.catalog-detail-support { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 30px; margin-top: 30px; }
.catalog-detail-support article { padding: 28px; background: var(--soft); }
.catalog-detail-support h3 { font-size: 28px; }
.catalog-detail-support p { font-size: 16px; color: #536476; }
.catalog-layout :focus-visible, .catalog-detail :focus-visible, .catalog-detail-body :focus-visible { outline: 3px solid var(--gold); outline-offset: 4px; }
@media (max-width: 1050px) {
  .catalog-layout { grid-template-columns: 210px minmax(0,1fr); gap: 24px; }
  .catalog-grid { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .catalog-filters { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 820px) {
  .catalog-hero-row, .catalog-layout, .catalog-detail { grid-template-columns: minmax(0,1fr); gap: 28px; }
  .catalog-hero-note { padding-left: 18px; }
  .catalog-hero-note strong { font-size: 24px; }
  .catalog-sidebar nav { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .catalog-sidebar nav h2, .catalog-category-current, .catalog-subcategories { grid-column: 1 / -1; }
  .catalog-subcategories { display: flex; flex-wrap: wrap; gap: 6px 18px; }
  .catalog-help { display: none; }
  .catalog-detail { gap: 26px; }
}
@media (max-width: 560px) {
  .catalog-page .mobile-wa { position: static; display: flex; justify-content: center; max-width: none; margin: 16px; }
  .catalog-hero { padding: 28px 0 32px; }
  .catalog-hero-row { gap: 22px; }
  .catalog-layout { padding-top: 26px; }
  .catalog-grid, .catalog-config-grid, .catalog-detail-support { grid-template-columns: minmax(0,1fr); }
  .catalog-filters { padding: 16px; }
  .catalog-filters label:first-child { grid-column: 1 / -1; }
  .catalog-filters .btn { grid-column: 1 / -1; }
  .catalog-picture { aspect-ratio: 4/3; padding: 18px; }
  .catalog-card h3 { font-size: 30px; }
  .catalog-card p, .catalog-card-links { font-size: 15px; }
  .catalog-card-body { padding: 20px 20px 0; }
  .catalog-table th, .catalog-table td { padding: 12px; font-size: 14px; }
  .catalog-table thead th { min-width: 105px; }
  .catalog-preparation { padding: 24px; }
  .catalog-detail-image { padding: 18px; }
  .catalog-detail-actions .btn { flex: 1 1 100%; }
}

/* Scoped technical sheets. Existing category layouts and unrelated pages are unchanged. */
.product-specifications{min-width:0;scroll-margin-top:130px}
.product-specifications .product-spec-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.product-specifications .product-spec-heading h2{margin:4px 0 0}
.product-specifications .product-spec-label{display:inline-block;padding:8px 12px;border:1px solid #ccd8e1;color:#173c58;background:#f0f5f8;font-size:13px;line-height:1.5;font-weight:600}
.product-specifications .product-spec-basis{border-left:4px solid #c39833;background:#f2f5f7;padding:24px 28px;margin-bottom:24px}
.product-specifications .product-spec-basis-label{font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;margin:0 0 5px;color:#5b6f7f}
.product-specifications .product-spec-basis h3{color:#0c2f4d;margin:0 0 10px;font-size:25px;line-height:1.3}
.product-specifications .product-spec-basis p{max-width:94ch}
.product-specifications .product-spec-context{font-size:14px;line-height:1.7;color:#415d71;margin-bottom:0}
.product-specifications .product-spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start;gap:24px}
.product-specifications .product-spec-table-wrap{min-width:0;border:1px solid #d5dfe7}
.product-specifications .product-spec-table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:14px;line-height:1.7}
.product-specifications .product-spec-table caption{text-align:left;padding:16px 18px;background:#102f49;color:#fff;font-size:17px;font-weight:700}
.product-specifications .product-spec-table th,.product-specifications .product-spec-table td{text-align:left;vertical-align:top;padding:14px 16px;overflow-wrap:anywhere;border-bottom:1px solid #dce4ea}
.product-specifications .product-spec-table thead th{font-size:12px;color:#4a6478;background:#f2f5f7}
.product-specifications .product-spec-table th:first-child{width:40%}
.product-specifications .product-spec-table tbody th{font-weight:600;color:#163c59}
.product-specifications .product-spec-table tr:nth-child(even){background:#f7f9fb}
.product-specifications .product-spec-table tr:last-child>*{border-bottom:0}
.product-specifications .product-spec-units{margin:20px 0;font-size:13px;line-height:1.8;color:#536b7d}
.product-specifications .product-spec-confirmation{border:1px solid #d5dfe7;margin:24px 0;padding:0 20px}
.product-specifications .product-spec-confirmation summary{padding:18px 0;cursor:pointer;font-size:17px;font-weight:700;color:#102f49}
.product-specifications .product-spec-confirmation summary:focus-visible,.product-specifications a:focus-visible{outline:3px solid #bd9025;outline-offset:4px}
.product-specifications .product-spec-confirmation dl{margin:0 0 20px}
.product-specifications .product-spec-confirmation dl>div{display:grid;grid-template-columns:minmax(130px,1fr) 3fr;gap:16px;padding:14px 0;border-top:1px solid #e0e7eb}
.product-specifications .product-spec-confirmation dt{font-weight:700}
.product-specifications .product-spec-confirmation dd{margin:0;line-height:1.75}
.product-specifications .product-spec-footer{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:22px 0;border-top:1px solid #d5dfe7}
.product-specifications .product-spec-footer>div{min-width:0;flex:1}
.product-specifications .product-spec-footer strong,.product-specifications .product-spec-footer small{display:block}
.product-specifications .product-spec-footer a:not(.btn){display:inline-block;margin:5px 0;text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}
.product-specifications .product-spec-footer small{color:#536b7d;font-size:12px;line-height:1.7}
.product-specifications .product-spec-footer .btn{flex-shrink:0;white-space:normal;text-align:center;max-width:100%}
@media(max-width:820px){.product-specifications .product-spec-grid{grid-template-columns:1fr}.product-specifications .product-spec-footer{align-items:flex-start;flex-direction:column}}
@media(max-width:480px){.product-specifications .product-spec-basis{padding:18px}.product-specifications .product-spec-basis h3{font-size:23px}.product-specifications .product-spec-table th,.product-specifications .product-spec-table td{padding:12px 10px}.product-specifications .product-spec-table caption{padding:14px 12px}.product-specifications .product-spec-confirmation{padding:0 15px}.product-specifications .product-spec-confirmation dl>div{grid-template-columns:1fr;gap:4px}.product-specifications .product-spec-footer .btn{width:100%}}

/* Product-range facts stay within the existing catalogue layout. */
.catalog-card-facts{margin:0 0 18px;display:grid;gap:7px;font-size:13px;line-height:1.45}
.catalog-card-facts>div{display:grid;grid-template-columns:minmax(64px,35%) 1fr;gap:8px;border-top:1px solid #e5ebef;padding-top:7px}
.catalog-card-facts dt{font-weight:700;color:#173c58}.catalog-card-facts dd{margin:0;color:#536476;overflow-wrap:anywhere}
.product-specifications .product-spec-intro{max-width:80ch;margin:0 0 20px;color:#536476}
.product-specifications .product-spec-source{margin:22px 0;line-height:1.6;color:#536476}
.product-specifications .product-spec-source a{text-decoration:underline;text-underline-offset:3px}
.product-specifications .product-spec-reference{margin:24px 0;border:1px solid #d5dfe7;padding:0 18px}
.product-specifications .product-spec-reference summary{padding:17px 0;cursor:pointer;font-weight:700;color:#102f49}
.product-specifications .product-spec-reference p{color:#536476;line-height:1.65}
.product-specifications .product-spec-reference .product-spec-table-wrap{margin:16px 0}
.product-specifications .product-spec-reference:focus-within{outline:3px solid #bd9025;outline-offset:3px}
.product-specifications .product-spec-quote{display:inline-block;margin-top:8px}
@media(max-width:480px){.catalog-card-facts{font-size:14px}.product-specifications .product-spec-reference{padding:0 12px}}
.catalog-picture{position:relative}.catalog-photo-label{position:absolute;left:12px;bottom:12px;padding:4px 7px;background:rgba(16,47,73,.9);color:#fff;font-size:11px;font-weight:700;letter-spacing:.02em;line-height:1.3}