:root {
        --brand-orange: #FF6A00;
        --bg-light-grey: #f4f5f7;
        --text-dark: #222222;
        --text-gray: #666666;
    }

    /* === 针对内页顶部大图的调整 === */
    .page_bg {
        width: 100%;
        height: clamp(620px, calc(100vw * 700 / 1920), 700px) !important; 
        min-height: clamp(620px, calc(100vw * 700 / 1920), 700px) !important;
        max-height: 700px !important;
        padding-top: 0; /* 移除导航栏高度补偿，消除间隙 */
        margin-top: 20px !important; 
        margin-bottom: 0px;
        position: relative;
        display: block;
        background-color: #f8f8f8; 
        overflow: hidden;
    }
    .page_bg > * { width: 100% !important; height: 100% !important; min-height: 100% !important; max-height: none !important; margin: 0 !important; padding: 0 !important; }
    .page_bg img { width: 100% !important; height: 100% !important; min-height: 100% !important; max-height: none !important; object-fit: cover; object-position: center; display: block; }
    .page_bg img.pc-banner { display: block !important; }
    .page_bg img.mobile-banner { display: none !important; }

    .page_bg .banner-title {
        width: 100% !important;
        height: auto !important;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        text-align: center;
        color: #ffffff;
        font-size: 48px;
        font-weight: 700;
        z-index: 10;
        text-shadow: 0 2px 10px rgba(0,0,0,0.5);
        letter-spacing: 1px;
        margin: 0 !important;
        line-height: 1.2;
        animation: innerBannerTitleIn 1s ease;
    }

    /* === 现代化产品列表区域 === */
    .modern-products-section {
        padding: 60px 0 80px;
        background: #ffffff;
    }

    /* === 侧边栏导航样式 === */
    .mobile-sidebar-toggle {
        display: none;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
        font-size: 18px;
        font-weight: 600;
        color: var(--text-dark);
    }
    .mobile-sidebar-toggle i {
        color: var(--brand-orange);
        transition: transform 0.3s;
        font-size: 22px;
    }
    .mobile-sidebar-toggle.active i {
        transform: rotate(180deg);
    }
    .product-sidebar {
        background: #ffffff;
        border: 1px solid #eaeaea;
        border-radius: 12px;
        padding: 25px 20px;
        margin-bottom: 30px;
        box-shadow: 0 5px 20px rgba(0,0,0,0.02);
    }
    .sidebar-title {
        font-size: 20px;
        font-weight: 700;
        color: var(--text-dark);
        margin-top: 0;
        margin-bottom: 20px;
        padding-bottom: 15px;
        border-bottom: 2px solid var(--brand-orange);
        display: inline-block;
    }
    .sidebar-menu {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .sidebar-menu > li {
        border-bottom: 1px dashed #eee;
    }
    .sidebar-menu > li:focus,
    .sidebar-menu > li:active,
    .sidebar-menu > li:focus-within,
    .sidebar-menu > li.has-sub:focus,
    .sidebar-menu > li.has-sub:active,
    .sidebar-menu > li.has-sub:focus-within {
        outline: none !important;
        box-shadow: none !important;
        border-left: none !important;
        border-right: none !important;
    }
    .sidebar-menu > li:last-child {
        border-bottom: none;
    }
    .menu-item-wrapper {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .menu-item-wrapper:focus,
    .menu-item-wrapper:active,
    .menu-item-wrapper:focus-within {
        outline: none !important;
        box-shadow: none !important;
        border: none !important;
    }
    .sidebar-menu a {
        display: block;
        padding: 12px 0;
        color: var(--text-dark);
        text-decoration: none;
        font-size: 15px;
        font-weight: 600;
        transition: all 0.3s;
        flex-grow: 1;
        border: none !important;
    }
    .sidebar-menu a:hover, .sidebar-menu a.active {
        color: var(--brand-orange);
    }
    .sidebar-menu a:focus,
    .sidebar-menu a:active,
    .sidebar-menu a:focus-visible {
        outline: none !important;
        outline-offset: 0 !important;
        box-shadow: none !important;
        border: none !important;
        text-decoration: none !important;
        color: var(--brand-orange);
    }
    .sidebar-menu a::before,
    .sidebar-menu a::after {
        border: none !important;
        outline: none !important;
        box-shadow: none !important;
    }
    .toggle-btn {
        cursor: pointer;
        padding: 10px;
        color: #999;
        transition: transform 0.3s;
        font-size: 18px;
        width: 30px;
        text-align: right;
    }
    .toggle-btn:hover {
        color: var(--brand-orange);
    }
    .toggle-btn.open {
        transform: rotate(90deg); /* 从向右变成向下 */
    }
    .toggle-btn-level3 {
        cursor: pointer;
        padding: 8px;
        color: #bbb;
        transition: transform 0.3s;
        font-size: 14px;
        width: 25px;
        text-align: right;
    }
    .toggle-btn-level3:hover {
        color: var(--brand-orange);
    }
    .toggle-btn-level3.open {
        transform: rotate(90deg);
    }
    .sub-menu {
        list-style: none;
        padding: 0 0 15px 15px;
        margin: 0;
        display: none; /* 默认隐藏 */
    }
    .sub-menu li a {
        padding: 8px 0;
        font-size: 14px;
        color: var(--text-gray);
        font-weight: 400;
    }
    .sub-menu li a:hover, .sub-menu li a.active {
        color: var(--brand-orange);
    }

    /* === 栏目介绍区域 === */
    .category-intro {
        text-align: left; /* 改为左对齐更适合带侧边栏的布局 */
        margin: 0 0 40px;
        animation: fadeInUp 0.8s ease;
    }
    .category-intro .intro-title {
        font-size: 28px;
        font-weight: 700;
        color: var(--text-dark);
        margin-top: 0;
        margin-bottom: 20px;
        position: relative;
        display: inline-block;
        padding-bottom: 15px;
    }
    .category-intro .intro-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 50px;
        height: 3px;
        background-color: var(--brand-orange);
    }
    .category-intro .intro-desc {
        font-size: 15px;
        color: var(--text-gray);
        line-height: 1.8;
        margin: 0;
    }

    /* 产品网格布局 */
    .modern-product-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 30px;
        margin-bottom: 50px;
    }

    /* 产品卡片样式 */
    .modern-product-card {
        background: transparent; 
        border-radius: 12px;
        overflow: hidden;
        transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
        text-align: center;
        padding: 30px 20px 25px;
        text-decoration: none !important;
        display: block;
        border: none !important;
        box-sizing: border-box;
    }
    .modern-product-card:hover {
        transform: translateY(-8px);
        background: #ffffff;
        box-shadow: 0 15px 35px rgba(0,0,0,0.08);
        border: none !important;
    }
    .modern-product-card:focus,
    .modern-product-card:active,
    .modern-product-card:focus-visible {
        outline: none !important;
        outline-offset: 0 !important;
        box-shadow: none !important;
        border: none !important;
        text-decoration: none !important;
    }
    .modern-product-card::before,
    .modern-product-card::after {
        border: none !important;
        outline: none !important;
        box-shadow: none !important;
    }
    .modern-product-card .img-wrapper {
        height: 200px;
        display: flex;
        align-items: center;
        justify-content: center;
        margin-bottom: 20px;
    }
    .modern-product-card img {
        max-height: 100%;
        max-width: 100%;
        object-fit: contain;
        transition: transform 0.5s ease;
        border: none !important;
        outline: none !important;
        box-shadow: none !important;
    }
    .modern-product-card:hover img {
        transform: scale(1.05);
    }
    .modern-product-card .title {
        font-size: 16px;
        font-weight: 600;
        color: var(--text-dark);
        margin: 0 0 8px 0;
        line-height: 1.4;
        transition: color 0.3s;
    }
    .modern-product-card:hover .title {
        color: var(--brand-orange);
    }
    .modern-product-card:focus .title,
    .modern-product-card:active .title,
    .modern-product-card:focus-visible .title,
    .modern-product-card:focus-within .title {
        color: var(--brand-orange) !important;
        -webkit-text-fill-color: var(--brand-orange) !important;
        transition: none !important;
    }
    .modern-product-card .subtitle {
        font-size: 13px;
        color: var(--text-gray);
        margin: 0;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    /* 分页样式优化 */
    .modern-pagination {
        display: flex;
        justify-content: center;
        gap: 8px;
        margin-top: 40px;
    }
    .modern-pagination a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 40px;
        height: 40px;
        padding: 0 15px;
        background: #fff;
        border: 1px solid #ddd;
        color: var(--text-gray);
        border-radius: 4px;
        text-decoration: none;
        transition: all 0.3s;
        font-weight: 500;
    }
    .modern-pagination a:hover,
    .modern-pagination a.active {
        background: var(--brand-orange);
        color: #fff;
        border-color: var(--brand-orange);
    }

    @keyframes fadeInUp {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    @keyframes innerBannerTitleIn {
        from { opacity: 0; transform: translate(-50%, calc(-50% + 30px)); }
        to { opacity: 1; transform: translate(-50%, -50%); }
    }

    /* 手机端适配 */
    @media (max-width: 767px) {
        .page_bg {
            height: var(--vesol-banner-mobile-height, 320px) !important;
            min-height: var(--vesol-banner-mobile-height, 320px) !important;
            max-height: var(--vesol-banner-mobile-height, 320px) !important;
            margin-top: 20px !important;
            padding-top: 0;
        } /* 手机端也移除间隙 */
        .page_bg img.pc-banner { display: none !important; }
        .page_bg img.mobile-banner { display: block !important; }
        .page_bg .banner-title { font-size: 36px; left: 50%; }
        
        .modern-products-section { padding: 40px 0; }
        
        .product-sidebar { margin-bottom: 30px; padding: 15px 20px; }
        .sidebar-title { display: none; }
        .mobile-sidebar-toggle { display: flex; }
        #sidebar-menu { display: none; padding-top: 15px; margin-top: 15px; border-top: 1px solid #eaeaea; }
        #sidebar-menu.show-on-mobile { display: block; animation: fadeInUp 0.4s ease; }
        
        .category-intro { margin-bottom: 30px; text-align: center; }
        .category-intro .intro-title::after { left: 50%; transform: translateX(-50%); }
        .category-intro .intro-title { font-size: 24px; margin-bottom: 15px; padding-bottom: 10px; }
        .category-intro .intro-desc { font-size: 14px; }

        .modern-product-grid { grid-template-columns: repeat(auto-fill, minmax(100%, 1fr)); gap: 20px; }
        .modern-product-card { padding: 30px 20px 20px; }
        .modern-product-card .img-wrapper { height: 180px; }
    }

    @media (min-width: 768px) and (max-width: 991px) {
        .page_bg {
            height: 420px !important;
            min-height: 420px !important;
            max-height: 420px !important;
            margin-top: 20px !important;
        }

        .page_bg img {
            object-position: center !important;
        }
    }

    @media (min-width: 992px) and (max-width: 1199px) {
        .page_bg {
            height: 520px !important;
            min-height: 520px !important;
            max-height: 520px !important;
            margin-top: 20px !important;
        }
    }

    /* Final interaction cleanup for product list content only */
    .modern-products-section a,
    .modern-products-section a:focus,
    .modern-products-section a:active,
    .modern-products-section a:focus-visible,
    .modern-products-section a *,
    .modern-products-section a *:focus,
    .modern-products-section a *:active,
    .modern-products-section a *:focus-visible,
    .modern-products-section .menu-item-wrapper,
    .modern-products-section .menu-item-wrapper:focus,
    .modern-products-section .menu-item-wrapper:active,
    .modern-products-section .menu-item-wrapper:focus-within,
    .modern-products-section .sidebar-menu li,
    .modern-products-section .sidebar-menu li:focus,
    .modern-products-section .sidebar-menu li:active,
    .modern-products-section .sidebar-menu li:focus-within {
        outline: none !important;
        outline-offset: 0 !important;
        box-shadow: none !important;
        text-decoration: none !important;
        -webkit-tap-highlight-color: transparent;
    }

    .modern-products-section .modern-product-card,
    .modern-products-section .modern-product-card:hover,
    .modern-products-section .modern-product-card:focus,
    .modern-products-section .modern-product-card:active,
    .modern-products-section .modern-product-card:focus-visible,
    .modern-products-section .modern-product-card:focus-within {
        border: none !important;
        box-shadow: none !important;
        outline: none !important;
    }

    .modern-products-section .sidebar-menu a:focus,
    .modern-products-section .sidebar-menu a:active,
    .modern-products-section .sidebar-menu a:focus-visible {
        color: var(--brand-orange) !important;
        border: none !important;
        background: transparent !important;
    }