.category-header-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.main-category-tag {
    padding: 8px 24px;
    background: var(--primary);
    color: var(--white);
    border-radius: 4px;
    font-weight: 600;
    font-size: 1.09rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.sub-category-bar {
    flex: 1;
    min-width: 0;
    background: rgba(247, 249, 252, 0.7);
    border-radius: 4px;
    padding: 10px 20px;
}

.sub-category-bar h2 {
    margin: 0;
    font-size: 1.43rem;
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.4;
}

.sub-category-bar h2 a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

.sub-category-bar h2 a:hover {
    color: var(--accent);
}

.product-categories {
    padding: 30px 0 50px;
}

.product-category {
    margin-bottom: 56px;
    scroll-margin-top: 100px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 28px;
}

.product-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 28px rgba(15, 73, 157, 0.1);
    border-color: rgba(21, 157, 146, 0.2);
}

.product-img-wrapper {
    height: 180px;
    background: #F5F7FA;
    overflow: hidden;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-img-wrapper img {
    max-width: 100%;
    max-height: fit-content;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-card:hover .product-img-wrapper img {
    transform: scale(1.05);
}

.product-info {
    padding: 20px 24px 24px;
    text-align: center;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    font-size: 1.17rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}

.product-info p {
    font-size: 0.96rem;
    color: var(--text-gray);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    margin: 0;
}

/* ============================================================
   3. 分类页 - 电梯导航
   ============================================================ */
.sidebar-nav {
    position: fixed;
    right: 65px;
    z-index: 900;
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    display: none;
}

@media (min-width: 900px) {
    .sidebar-nav {
        display: block;
    }
}

.sidebar-nav-item {
    padding: 12px 20px;
    font-size: 0.97rem;
    color: var(--text-gray);
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    white-space: nowrap;
    border-left: 3px solid transparent;
}

.sidebar-nav-item:hover,
.sidebar-nav-item.active {
    color: var(--primary);
    background: rgba(15, 73, 157, 0.06);
    border-left-color: var(--accent);
}

/* ============================================================
   5. 详情页 - 产品介绍
   ============================================================ */
.category-intro {
    padding: 40px 0;
}

.intro-grid {
    display: grid;
    grid-template-columns: 70% 30%;
    gap: 32px;
    align-items: flex-start;
}

.intro-text h2 {
    font-size: 1.8rem;
    color: var(--primary);
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.3;
}

.intro-desc {
    font-size: 1rem;
    color: var(--text-gray);
    margin-bottom: 16px;
    line-height: 1.8;
}

.intro-desc p {
    margin-bottom: 12px;
}

.intro-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 24px;
}

.intro-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.intro-feature-item i {
    color: var(--accent);
    font-size: 1.1rem;
    margin-top: 3px;
    flex-shrink: 0;
}

.intro-feature-item span {
    font-size: 0.92rem;
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.5;
}

.intro-image {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    height: 320px;
}

.intro-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ============================================================
   6. 详情页 - 表格 & 筛选 (新增)
   ============================================================ */
.parametric-section {
    padding: 40px 0 60px;
    background: var(--light-bg);
}



.filter-section {
    padding: 0 0 20px;
}

#filterDropDowns {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: flex-end;
}

.filter-bar {
    background: var(--white);
    border-radius: 10px;
    padding: 20px 24px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    display: flex;
    align-items: flex-end;
    gap: 16px;
    flex-wrap: wrap;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 150px;
    flex: 1;
}

.filter-group label {
    font-size: 0.96rem;
    font-weight: 600;
    color: var(--text-gray);
    letter-spacing: 0.5px;
}

.filter-group input,
.filter-group select {
    height: 40px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background: var(--white);
    outline: none;
    transition: var(--transition);
    width: 100%;
    box-sizing: border-box;
}

/* 聚焦样式 */
.filter-group input:focus,
.filter-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(21, 157, 146, 0.1);
}

.filter-actions {
    display: flex;
    gap: 10px;
    align-items: flex-end;
    flex-shrink: 0;
}

.btn-filter {
    height: 40px;
    padding: 0 20px;
    border: none;
    border-radius: 6px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.btn-filter.primary {
    background: var(--accent);
    color: var(--white);
}

.btn-filter.primary:hover {
    background: var(--accent-hover);
}

.btn-filter.secondary {
    background: var(--light-bg);
    color: var(--text-gray);
    border: 1px solid var(--border-color);
}

.btn-filter.secondary:hover {
    background: #EDF0F5;
    color: var(--text-dark);
}

.filter-result-count {
    font-size: 0.9rem;
    color: var(--text-gray);
    margin-left: auto;
    white-space: nowrap;
}

.filter-result-count strong {
    color: var(--primary);
    font-weight: 700;
}



/* ============================================================
   7. 详情页 - 资源卡片 & CTA (新增)
   ============================================================ */
.resources-section {
    padding: 60px 0;
}

.resource-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    /* 固定 3 列 */
    gap: 24px;
}

.resource-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 24px;
    transition: var(--transition);
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.resource-card:hover {
    border-color: var(--accent);
    box-shadow: 0 6px 20px rgba(21, 157, 146, 0.08);
    transform: translateY(-3px);
}

.resource-icon {
    width: 48px;
    height: 48px;
    background: rgba(21, 157, 146, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.resource-info h4 {
    font-size: 1.14rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 6px;
}

.resource-info p {
    font-size: 0.97rem;
    color: var(--text-gray);
    line-height: 1.5;
    margin-bottom: 10px;
}

.resource-link {
    font-size: 0.9rem;
    color: var(--accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.resource-link:hover {
    gap: 8px;
}



/* ============================================================
   8. 共用 - 容器 & 工具类
   ============================================================ */


.page-box-pro {
    margin-top: 0;
    background: white;
}

.products-box {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 20px;
}

.clear {
    clear: both;
}

@media (max-width: 1300px) {
    .resource-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .category-header-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .sub-category-bar {
        padding: 8px 16px;
        width: 100%;
    }

    .page-banner.fullwidth {
        height: 220px;
    }

    .fullwidth h1 {
        font-size: 1.6rem;
    }

    .intro-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .intro-image {
        height: 240px;
    }

    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        min-width: 100%;
    }

    .filter-actions {
        justify-content: space-between;
    }

    .filter-result-count {
        margin-left: 0;
        margin-top: 8px;
    }
}

@media (max-width: 600px) {
    .product-grid {
        grid-template-columns: 1fr;
    }

    .main-category-tag {
        padding: 6px 16px;
    }

    .sub-category-bar h2 {
        font-size: 1rem;
    }

    .page-banner.fullwidth {
        height: 180px;
    }

    .fullwidth p {
        display: none;
    }

    .intro-features {
        grid-template-columns: 1fr;
    }

    .cta-section h2 {
        font-size: 1.5rem;
    }

    .resource-grid {
        grid-template-columns: 1fr;
    }
}