/* ================================================================
       设计令牌 — 与首页保持一致
       ================================================================ */
    :root {
      --color-bg: #ffffff;
      --color-text: #000000;
      --color-accent: #da1984;
      --color-accent-tint: #fdeaf3;
      --color-gray-light: #f5f5f5;
      --color-gray-mid: #999999;
      --color-gray-line: #e5e5e5;
      --font-display: 'Playfair Display', serif;
      --font-title: 'Playfair Title', 'Playfair Display', serif;
      --font-body: 'Poppins', sans-serif;
      --font-semibold: 'Poppins SemiBold', 'Poppins', sans-serif;
      --container-width: 1400px;
      --radius-btn: 2px;
    }

    * { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      color: var(--color-text);
      background: var(--color-bg);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }
    img { max-width: 100%; display: block; }
    a { text-decoration: none; color: inherit; }
    ul { list-style: none; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    .container { max-width: var(--container-width); margin: 0 auto; padding: 0 24px; }
    h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; }
    .mega-menu-col h3,
    .mega-menu-col h3 a {
      font-family: var(--font-body) !important;
    }

    .btn {
      display: inline-block; padding: 12px 28px; font-size: 12px;
      letter-spacing: .1em; text-transform: uppercase; font-weight: 500;
      border-radius: var(--radius-btn); transition: all .25s ease;
    }
    .btn-primary { background: var(--color-accent); color: #fff; }
    .btn-primary:hover { background: #b31469; }
    .btn-outline { background: transparent; color: var(--color-text); border: 1px solid var(--color-text); }
    .btn-outline:hover { background: var(--color-text); color: #fff; }

    .announce-bar {
      background: #000; color: #fff; text-align: center; font-size: 12px;
      letter-spacing: .08em; padding: 9px 20px;
    }
    .announce-bar b { color: var(--color-accent); font-weight: 600; font-family: var(--font-semibold); }

    /* ================================================================
       面包屑
       ================================================================ */
    .breadcrumb {
      padding: 18px 0;
      border-bottom: 1px solid var(--color-gray-line);
    }
    .breadcrumb ul { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
    .breadcrumb li { font-size: 13px; color: var(--color-gray-mid); display: flex; align-items: center; gap: 8px; }
    .breadcrumb a:hover { color: var(--color-accent); }
    .breadcrumb li.current { color: var(--color-text); font-weight: 500; }
    /* ================================================================
       新添加的页面横幅 Banner 样式
       ================================================================ */
    .page-banner {
      position: relative;
      width: 100%;
      height: 300px;
      background-color: #1a1a1a;
      background-image: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7)), var(--banner-bg, none);
      background-repeat: no-repeat;
      background-position: center center;
      background-size: cover;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: #ffffff;
    }
    .banner-content h1 {
      font-size: 42px;
      margin-bottom: 12px;
      letter-spacing: 0.02em;
    }
    .banner-content p {
      font-family: var(--font-body);
      font-size: 14px;
      font-weight: 300;
      letter-spacing: 0.05em;
      opacity: 0.9;
      max-width: 600px;
      margin: 0 auto 16px;
    }
    .banner-line {
      width: 32px;
      height: 2px;
      background-color: var(--color-accent);
      margin: 0 auto;
    }

    /* 移动端适配 */
    @media (max-width: 720px) {
      .page-banner { height: 200px; }
      .banner-content h1 { font-size: 28px; }
      .banner-content p { font-size: 12px; padding: 0 16px; }
    }
    /* ================================================================
       产品列表页 — 左侧类目 + 右侧产品
       ================================================================ */
    .product-catalog {
      padding: 40px 0 80px;
    }
    .catalog-layout {
      display: grid;
      grid-template-columns: 280px 1fr;
      gap: 48px;
      align-items: flex-start;
    }

    /* ===== 左侧：类目导航 ===== */
    .category-sidebar {
      position: sticky;
      top: 96px;
      max-height: calc(100vh - 120px);
      overflow-y: auto;
      padding-right: 8px;
    }
    .category-sidebar::-webkit-scrollbar { width: 4px; }
    .category-sidebar::-webkit-scrollbar-thumb { background: var(--color-gray-line); border-radius: 4px; }

    .category-sidebar .sidebar-title,
    .category-sidebar a.sidebar-title {
      text-decoration: none;
      color: inherit;
      display: block;
    }
    .category-sidebar a.sidebar-title:hover {
      color: var(--color-accent);
    }
    .category-sidebar .sidebar-title {
      font-family: var(--font-body);
      font-size: 14px;
      font-weight: 600;
      letter-spacing: .08em;
      text-transform: uppercase;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--color-gray-line);
      margin-bottom: 16px;
    }

    /* 一级类目 */
    .category-level-1 {
      margin-bottom: 6px;
    }
    .category-level-1 > .cat-link,
    .category-level-1 > a.cat-link {
      text-decoration: none;
      color: inherit;
      box-sizing: border-box;
    }
    .category-level-1 > .cat-link {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 12px;
      font-family: var(--font-body);
      font-size: 14px;
      font-weight: 600;
      border-radius: 4px;
      transition: all .2s ease;
      cursor: pointer;
    }
    .category-level-1 > .cat-link:hover {
      background: var(--color-gray-light);
    }
    .category-level-1 > .cat-link.active {
      background: var(--color-accent-tint);
      color: var(--color-accent);
    }
    .category-level-1 > .cat-link .arrow {
      font-size: 12px;
      color: var(--color-gray-mid);
      transition: transform .25s ease;
    }
    .category-level-1 > .cat-link.active .arrow {
      transform: rotate(90deg);
      color: var(--color-accent);
    }

    /* 二级类目 */
    .category-level-2 {
      padding-left: 16px;
      overflow: hidden;
      max-height: 0;
      transition: max-height .35s ease;
    }
    .category-level-2.open {
      max-height: 500px;
    }
    .category-level-2 .sub-link {
      display: block;
      padding: 7px 12px;
      font-size: 13px;
      color: #555;
      border-radius: 4px;
      transition: all .2s ease;
      cursor: pointer;
    }
    .category-level-2 .sub-link:hover {
      background: var(--color-gray-light);
      color: var(--color-text);
    }
    .category-level-2 .sub-link.active {
      background: var(--color-accent-tint);
      color: var(--color-accent);
      font-weight: 500;
    }
    .category-level-2 .sub-link .count {
      font-size: 11px;
      color: var(--color-gray-mid);
      margin-left: 6px;
    }
    .category-level-2 .sub-link.active .count {
      color: rgba(218,25,132,.6);
    }

    /* ===== 右侧：产品展示 ===== */
    .product-area {
      min-height: 400px;
    }

    /* 类目标题 */
    .category-header {
      display: flex;
      align-items: baseline;
      justify-content: space-between;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--color-gray-line);
      margin-bottom: 28px;
      flex-wrap: wrap;
      gap: 8px;
    }
    .category-header h2 {
      font-family: var(--font-semibold);
      font-size: 22px;
      font-weight: 600;
    }
    .category-header .product-count {
      font-size: 13px;
      color: var(--color-gray-mid);
      font-weight: 400;
    }
    .category-header .product-count strong {
      color: var(--color-text);
      font-family: var(--font-semibold);
      font-weight: 600;
    }

    /* 产品网格 */
    .product-catalog .product-area .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .product-item {
      background: #fff;
      transition: transform .3s ease;
    }
    .product-item:hover {
      transform: translateY(-4px);
    }

    .product-item .item-image {
      display: block;
      aspect-ratio: 1/1;
      overflow: hidden;
      background: var(--color-gray-light);
      border-radius: 4px;
      position: relative;
    }
    .product-item .item-image img {
      display: block;
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .5s ease;
    }
    .product-item:hover .item-image img {
      transform: scale(1.04);
    }

    .product-item .item-badges {
      position: absolute;
      top: 10px;
      left: 10px;
      z-index: 2;
      display: flex;
      flex-direction: column;
      align-items: flex-start;
      gap: 6px;
    }
    .product-item .item-badge {
      position: static;
      top: auto;
      left: auto;
      z-index: auto;
      display: inline-block;
      font-size: 10px;
      font-weight: 600;
      letter-spacing: .06em;
      padding: 4px 12px;
      border-radius: 2px;
      background: var(--color-accent);
      color: #fff;
      text-transform: uppercase;
      line-height: 1.3;
    }
    .product-item .item-badge.badge-hot {
      background: #da1984;
    }
    .product-item .item-badge.badge-new {
      background: #2a8a4a;
    }
    .product-item .item-badge.badge-oem {
      background: #e67e22;
    }

    .product-item .item-info {
      padding: 14px 4px 0;
    }
    .product-item .item-name {
      font-size: 14px;
      font-weight: 500;
      line-height: 1.4;
      margin-bottom: 4px;
    }
    .product-item .item-name a:hover {
      color: var(--color-accent);
    }
    .product-item .item-tag {
      font-size: 11px;
      color: var(--color-accent);
      font-weight: 500;
      letter-spacing: .04em;
      display: inline-block;
      background: var(--color-accent-tint);
      padding: 2px 12px;
      border-radius: 12px;
    }
    .product-item .item-desc {
      font-size: 12.5px;
      color: #777;
      margin-top: 8px;
      line-height: 1.5;
      display: -webkit-box;
      -webkit-line-clamp: 4;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .product-pagination {
      margin-top: 40px;
      text-align: center;
    }
    .product-pagination .page-numbers {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 36px;
      height: 36px;
      margin: 0 4px;
      padding: 0 10px;
      border: 1px solid var(--color-gray-line);
      font-size: 13px;
      color: var(--color-text);
      transition: all .2s ease;
    }
    .product-pagination .page-numbers.current,
    .product-pagination .page-numbers:hover {
      background: var(--color-accent);
      border-color: var(--color-accent);
      color: #fff;
    }
    .product-pagination ul {
      list-style: none;
      margin: 0;
      padding: 0;
      display: inline-flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 4px;
    }

    /* Footer 样式统一由 style.css 管理 */

    .back-to-top {
      position: fixed; right: 28px; bottom: 28px; width: 46px; height: 46px; border-radius: 50%;
      background: var(--color-accent); display: flex; align-items: center; justify-content: center;
      box-shadow: 0 6px 18px rgba(218,25,132,.35); opacity: 0; visibility: hidden;
      transform: translateY(12px);
      transition: opacity .3s ease, transform .3s ease, visibility .3s ease, background .25s ease;
      z-index: 150;
    }
    .back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
    .back-to-top:hover { background: #b31469; }
    .back-to-top svg { width: 18px; height: 18px; stroke: #fff; }

    .reveal {
      opacity: 0; transform: translateY(24px);
      transition: opacity .6s cubic-bezier(.22,.61,.36,1), transform .6s cubic-bezier(.22,.61,.36,1);
    }
    .reveal.in-view { opacity: 1; transform: translateY(0); }

    /* ================================================================
       响应式
       ================================================================ */
    @media (max-width: 1024px) {
      .catalog-layout {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .category-sidebar {
        position: static;
        max-height: none;
        overflow-y: visible;
        padding-right: 0;
      }
      .product-catalog .product-area .product-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 720px) {
      .product-catalog .product-area .product-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }
      .category-header h2 { font-size: 18px; }
    }
    @media (max-width: 480px) {
      .product-catalog .product-area .product-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
      }
      .product-item .item-name { font-size: 12px; }
      .product-item .item-desc { font-size: 11px; }
    }