/* 动画关键帧 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes slideInLeft {
            from {
                transform: translateX(-30px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }
        
        @keyframes underlineExpand {
            from {
                width: 0;
            }
            to {
                width: 100%;
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }
        
        /* 核心样式变量 */
        :root {
            --primary-color: #ffb600;
            --primary-dark: #e6a400;
            --dark-color: #1a1a1a;
            --border-color: #e0e0e0;
            --light-color: #f8f9fa;
        }
        
        /* 页面整体动画 */
        .body-inner {
            animation: fadeIn 0.5s ease-out;
        }
        
        /* 横幅样式 - 与其他页面一致 */
        .banner-area {
            position: relative;
            height: 400px;
            background-size: cover;
            background-position: center;
            width: 100%;
            overflow: hidden;
            display: flex;
            align-items: center;
        }
        
        .banner-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(to right, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0.5) 40%, rgba(0,0,0,0.2) 80%, rgba(0,0,0,0) 100%);
        }
        
        /* 横幅内容容器 */
        .banner-container {
            width: 100%;
        }
        
        .banner-content {
            position: relative;
            z-index: 2;
            color: white;
            text-align: left;
            padding: 0 15px;
        }
        
        /* 修改标题样式 - 添加黄色下划线 */
        .banner-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
            position: relative;
            display: inline-block;
            padding-bottom: 15px;
            animation: slideInLeft 0.8s ease-out 0.3s both;
            opacity: 0;
        }
        
        /* 黄色下划线 */
        .banner-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 4px;
            background: var(--primary-color);
            border-radius: 2px;
            animation: underlineExpand 0.6s ease-out 1.1s forwards;
        }
        
        .banner-description {
            font-size: 1rem;
            opacity: 0.9;
            text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
            animation: fadeInUp 0.8s ease-out 0.5s both;
            opacity: 0;
        }
        
        /* 基础重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        html {
            font-size: 16px;
        }
        
        /* 导航栏样式 */
        .nav-menu {
            border-bottom: 1px solid #000 !important;
        }
        
        .nav-menu .nav-item.active > .nav-link,
        .nav-menu .nav-item:hover > .nav-link {
            background-color: #000 !important;
            color: #fff !important;
        }
        
        /* 产品中心导航项样式 */
        .nav-menu .nav-item.product-center-item > .nav-link {
            background-color: #000 !important;
            color: #fff !important;
            border: 1px solid #000 !important;
        }
        
        /* 二级分类下拉菜单 */
        .dropdown-menu.level2 {
            background-color: #333 !important;
            border: 1px solid #000 !important;
            padding: 0.5rem 0;
            min-width: 200px;
        }
        
        .dropdown-menu.level2 .dropdown-item {
            color: #fff !important;
            padding: 0.5rem 1.5rem;
            transition: all 0.2s ease;
        }
        
        .dropdown-menu.level2 .dropdown-item:hover {
            background-color: #ffd700 !important;
            color: #000 !important;
        }
        
        /* 三级分类下拉菜单 */
        .dropdown-menu.level3 {
            background-color: #f5f5f5 !important;
            border: 1px solid #000 !important;
            padding: 0.5rem 0;
            min-width: 200px;
        }
        
        .dropdown-menu.level3 .dropdown-item {
            color: #000 !important;
            padding: 0.5rem 1.5rem 0.5rem 2.5rem;
            transition: all 0.2s ease;
        }
        
        .dropdown-menu.level3 .dropdown-item:hover {
            background-color: #ffd700 !important;
            color: #fff !important;
        }
        
        .dropdown-menu.level3 {
            margin-left: 1px;
            box-shadow: 2px 2px 5px rgba(0,0,0,0.1);
        }
        
        /* 主容器 */
        #main-container.main-container {
            padding-top: 0 !important;
            padding-bottom: 3rem !important;
        }
        
        #main-container {
            padding: 0 !important;
            padding-bottom: 3rem !important;
        }
        
        /* 修复Bootstrap网格系统 */
        .row {
            display: flex;
            flex-wrap: wrap;
            margin-right: -15px;
            margin-left: -15px;
        }
        
        .col-xl-3, .col-lg-4, .col-xl-9, .col-lg-8 {
            position: relative;
            width: 100%;
            padding-right: 15px;
            padding-left: 15px;
        }
        
        /* 面包屑导航样式 */
        .breadcrumb-container {
            padding: 15px 0;
            border-bottom: 1px solid #eee;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease-out 0.4s both;
            opacity: 0;
        }
        
        .breadcrumb-container nav {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        
        .breadcrumb-container .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
        }
        
        .breadcrumb-container .breadcrumb-item a {
            color: #666;
        }
        
        .breadcrumb-container .breadcrumb-item.active {
            color: #333;
        }
        
        .breadcrumb-container .breadcrumb-item + .breadcrumb-item::before {
            content: " / ";
            color: #999;
        }
        
        /* ==== 修复左侧导航栏样式 ==== */
        .sidebar-container {
            width: 100%;
            float: none;
            clear: both;
            margin-bottom: 20px;
            animation: fadeInUp 0.6s ease-out 0.6s both;
            opacity: 0;
        }
        
        /* 产品中心左侧导航栏样式 */
        .product-center-sidebar {
            background: #fff;
            box-shadow: 0 0.125rem 0.5rem rgba(0,0,0,0.08);
            border: 1px solid #bbbbbb;
            overflow: visible;
            margin-bottom: 0;
            width: 100%;
            display: block;
            position: relative;
            z-index: 1;
        }
        
        .sidebar-header {
            padding: 0.875rem 1rem;
            background: #666;
            border-bottom: 1px solid #eee;
            display: flex;
            align-items: center;
            font-weight: 600;
            color: #fff;
            font-size: 1rem;
            width: 100%;
            box-sizing: border-box;
        }
        
        .sidebar-header-icon {
            color: #ffb600;
            margin-right: 0.5rem;
            font-size: 1.125rem;
        }
        
        /* 二级分类导航 */
        .category-nav {
            list-style: none;
            padding: 0;
            margin: 0;
            width: 100%;
            display: block;
        }
        
        .category-item {
            border-bottom: 1px solid #f5f5f5;
            transition: background-color 0.2s ease;
            width: 100%;
            display: block;
            position: relative;
        }
        
        .category-item:last-child {
            border-bottom: none;
        }
        
        .category-item.active {
            background-color: rgba(255, 182, 0, 0.05);
        }
        
        /* 二级分类链接 */
        .category-link {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.75rem 1rem;
            color: #333;
            font-size: 0.875rem;
            text-decoration: none;
            transition: all 0.2s ease;
            width: 100%;
            box-sizing: border-box;
        }
        
        .category-link:hover {
            color: #ffb600;
            background-color: rgba(255, 182, 0, 0.05);
        }
        
        .category-link.active {
            color: #ffb600;
            font-weight: 500;
        }
        
        /* 三级分类展开按钮 */
        .toggle-btn {
            width: 1.5rem;
            height: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            background: transparent;
            cursor: pointer;
            color: #999;
            transition: transform 0.3s ease, color 0.2s ease;
        }
        
        .toggle-btn:hover {
            color: #ffb600;
            background-color: rgba(0,0,0,0.05);
        }
        
        .toggle-btn.expanded {
            transform: rotate(180deg);
            color: #ffb600;
        }
        
        .toggle-btn i {
            font-size: 0.875rem;
        }
        
        /* 三级分类子菜单 */
        .subcategory-menu {
            list-style: none;
            padding: 0;
            margin: 0;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            background-color: #fafafa;
            width: 100%;
            position: relative;
            z-index: 2;
        }
        
        .subcategory-menu.expanded {
            max-height: 31.25rem;
        }
        
        .subcategory-item {
            border-top: 1px solid #f0f0f0;
        }
        
        .subcategory-link {
            display: block;
            padding: 0.625rem 1rem 0.625rem 1.875rem;
            color: #666;
            font-size: 0.8125rem;
            text-decoration: none;
            transition: all 0.2s ease;
            position: relative;
        }
        
        .subcategory-link::before {
            content: "";
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            width: 0.375rem;
            height: 0.375rem;
            background-color: #ccc;
        }
        
        .subcategory-link:hover {
            color: #ffb600;
            background-color: rgba(255, 182, 0, 0.05);
        }
        
        .subcategory-link:hover::before {
            background-color: #ffb600;
        }
        
        .subcategory-link.active {
            color: #ffb600;
            font-weight: 500;
            background-color: rgba(255, 182, 0, 0.08);
        }
        
        .subcategory-link.active::before {
            background-color: #ffb600;
        }
        
        /* 当前分类标记 */
        .current-category {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background-color: #ffb600;
            color: white;
            font-size: 0.625rem;
            padding: 0.125rem 0.375rem;
            margin-left: 0.5rem;
        }
        
        /* 内容区域动画 */
        .content-container {
            animation: fadeInUp 0.6s ease-out 0.7s both;
            opacity: 0;
        }
        
        /* 产品分类卡片网格 */
        .product-categories-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.25rem;
        }
        
        /* 分类卡片动画 */
        .category-card {
            background: #fff;
            overflow: hidden;
            box-shadow: 0 0.1875rem 0.625rem rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            border: 1px solid #bbbbbb;
            cursor: pointer;
            display: flex;
            flex-direction: column;
            height: 100%;
            animation: fadeInUp 0.5s ease-out;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        
        /* 为每个分类卡片设置延迟动画 */
        .category-card:nth-child(1) { animation-delay: 0.8s; }
        .category-card:nth-child(2) { animation-delay: 0.9s; }
        .category-card:nth-child(3) { animation-delay: 1.0s; }
        .category-card:nth-child(4) { animation-delay: 1.1s; }
        .category-card:nth-child(5) { animation-delay: 1.2s; }
        .category-card:nth-child(6) { animation-delay: 1.3s; }
        .category-card:nth-child(7) { animation-delay: 1.4s; }
        .category-card:nth-child(8) { animation-delay: 1.5s; }
        .category-card:nth-child(9) { animation-delay: 1.6s; }
        .category-card:nth-child(10) { animation-delay: 1.7s; }
        .category-card:nth-child(11) { animation-delay: 1.8s; }
        .category-card:nth-child(12) { animation-delay: 1.9s; }
        
        .category-card:hover {
            transform: translateY(-0.3125rem);
            box-shadow: 0 0.625rem 1.5625rem rgba(0,0,0,0.12);
            border-color: #ffd700;
        }
        
        .category-img {
            height: 0;
            padding-bottom: 100%;
            overflow: hidden;
            position: relative;
            background-color: #f8f8f8;
        }
        
        .category-img img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .category-card:hover .category-img img {
            transform: scale(1.05);
        }
        
        /* 无图片提示 */
        .no-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 0.9rem;
            background-color: #f0f0f0;
        }
        
        .category-content {
            padding: 0.2rem;
            text-align: center;
            background-color: #666;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            min-height: 2.5rem;
        }
        
        .category-content h4 {
            margin: 0;
            font-size: 0.875rem;
            line-height: 1.3;
        }
        
        .category-content h4 a {
            color: #fff;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .category-content h4 a:hover {
            color: #ffb600;
        }
        
        /* 无分类提示动画 */
        .no-categories {
            text-align: center;
            padding: 60px 20px;
            background: #fff;
            box-shadow: 0 0.125rem 0.75rem rgba(0,0,0,0.05);
            grid-column: 1 / -1;
            animation: fadeInUp 0.8s ease-out 0.9s both;
            opacity: 0;
        }
        
        .no-categories-icon {
            font-size: 3rem;
            color: #ccc;
            margin-bottom: 1.25rem;
        }
        
        .no-categories h4 {
            color: #666;
            font-size: 1.125rem;
            margin-bottom: 0.625rem;
        }
        
        .no-categories p {
            color: #999;
            font-size: 0.875rem;
        }
        
        /* 分页样式 */
        .pagination-wrapper {
            margin-top: 30px;
            text-align: center;
            animation: fadeInUp 0.6s ease-out 2.0s both;
            opacity: 0;
        }
        
        nav ul.pagination {
            display: flex;
            justify-content: center;
            padding-left: 0;
            list-style: none;
        }
        
        .page-item {
            margin: 0 2px;
        }
        
        .page-item.active .page-link {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            color: #fff;
        }
        
        .page-link {
            position: relative;
            display: block;
            padding: .4rem .65rem; 
            margin-left: -1px;
            line-height: 1.2; 
            color: var(--primary-color);
            background-color: #fff;
            border: 1px solid #dee2e6;
            text-decoration: none;
            font-size: 14px; 
        }
        
        .page-link:hover {
            background-color: var(--primary-color);
            border-color: var(--primary-color);
            color: #fff;
        }
        
        .page-item.disabled .page-link {
            color: #6c757d;
            pointer-events: none;
            cursor: auto;
            background-color: #fff;
            border-color: #dee2e6;
        }
        
        /* 响应式设计 */
        @media (min-width: 576px) {
            .col-sm-6 {
                flex: 0 0 50%;
                max-width: 50%;
            }
        }
        
        @media (min-width: 768px) {
            .col-md-4 {
                flex: 0 0 33.333333%;
                max-width: 33.333333%;
            }
            
            .col-md-8 {
                flex: 0 0 66.666667%;
                max-width: 66.666667%;
            }
        }
        
        @media (min-width: 992px) {
            .col-lg-4 {
                flex: 0 0 33.333333%;
                max-width: 33.333333%;
            }
            
            .col-lg-8 {
                flex: 0 0 66.666667%;
                max-width: 66.666667%;
            }
        }
        
        @media (min-width: 1200px) {
            .col-xl-3 {
                flex: 0 0 25%;
                max-width: 25%;
            }
            
            .col-xl-9 {
                flex: 0 0 75%;
                max-width: 75%;
            }
        }
        
        /* 响应式调整 */
        @media (max-width: 1200px) {
            .banner-area {
                height: 150px;
            }
            
            .banner-title {
                font-size: 1.8rem;
                padding-bottom: 12px;
            }
            
            .banner-title::after {
                height: 3px;
            }
            
            .banner-description {
                font-size: 0.9rem;
            }
            
            .product-categories-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1rem;
            }
        }
        
        @media (max-width: 992px) {
            .banner-area {
                height: 140px;
            }
            
            .banner-title {
                font-size: 1.6rem;
            }
            
            .product-categories-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 0.9375rem;
            }
            
            .sidebar-container {
                margin-bottom: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .banner-area {
                height: 130px;
            }
            
            .banner-title {
                font-size: 1.4rem;
                padding-bottom: 10px;
            }
            
            .banner-title::after {
                height: 2px;
            }
            
            .product-categories-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 0.75rem;
            }
            
            .category-content {
                padding: 0.5rem;
                min-height: 3rem;
            }
            
            .category-content h4 {
                font-size: 0.8125rem;
            }
        }
        
        @media (max-width: 576px) {
            .banner-area {
                height: 120px;
            }
            
            .banner-title {
                font-size: 1.2rem;
                margin-bottom: 5px;
                padding-bottom: 8px;
            }
            
            .product-categories-grid {
                grid-template-columns: 1fr;
                gap: 0.625rem;
            }
            
            .page-link {
                padding: .35rem .55rem; 
                font-size: 13px; 
            }
        }
        
        body {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }