/* 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: 300px;
            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;
        }
        
        /* 面包屑导航容器 */
        .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;
        }
        
        /* 主容器 */
        section#main-container.main-container {
            margin: 0 0 30px !important;
            padding: 0 !important;
        }
        
        /* 分类切换卡样式 - 居中显示 */
        .project-area .sol-category {
            display: flex;
            justify-content: center;
            margin-bottom: 40px;
            animation: fadeInUp 0.6s ease-out 0.6s both;
            opacity: 0;
        }
        
        .project-area .sol-category .nav-link {
            padding: 10px 20px;
            border: 1px solid #eee;
            margin-right: 8px;
            margin-bottom: 8px;
            border-radius: 0px;
            color: #333;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 15px; 
        }
        
        /* 悬停效果 - 黄底白字 */
        .project-area .sol-category .nav-link:hover {
            background-color: #ffb600;
            color: #fff !important;
            border-color: #ffb600;
        }
        
        .project-area .sol-category .nav-link.active {
            background-color: #ffb600;
            color: #fff !important;
            border-color: #ffb600;
        }

        /* 交错列表样式 */
        .project-area .sol-item {
            display: flex;
            align-items: center;
            margin-bottom: 40px;
            padding-bottom: 40px;
            gap: 100px;
            animation: fadeInUp 0.5s ease-out;
            opacity: 0;
            animation-fill-mode: forwards;
        }
        
        /* 为每个解决方案项设置延迟动画 */
        .project-area .sol-item:nth-child(1) { animation-delay: 0.8s; }
        .project-area .sol-item:nth-child(2) { animation-delay: 0.9s; }
        .project-area .sol-item:nth-child(3) { animation-delay: 1.0s; }
        .project-area .sol-item:nth-child(4) { animation-delay: 1.1s; }
        .project-area .sol-item:nth-child(5) { animation-delay: 1.2s; }
        .project-area .sol-item:nth-child(6) { animation-delay: 1.3s; }
        .project-area .sol-item:nth-child(7) { animation-delay: 1.4s; }
        .project-area .sol-item:nth-child(8) { animation-delay: 1.5s; }
        .project-area .sol-item:nth-child(9) { animation-delay: 1.6s; }
        .project-area .sol-item:nth-child(10) { animation-delay: 1.7s; }
        
        .project-area .sol-item:last-child {
            border-bottom: none;
        }
        
        /* 奇数行：左文字 右图片 */
        .project-area .sol-item.row-odd .sol-img {
            order: 2;
        }
        .project-area .sol-item.row-odd .sol-info {
            order: 1;
            text-align: left;
        }
        /* 偶数行：左图片 右文字 */
        .project-area .sol-item.row-even .sol-img {
            order: 1;
        }
        .project-area .sol-item.row-even .sol-info {
            order: 2;
            text-align: left;
        }

        /* 图片 */
        .project-area .sol-img {
            width: 38%;
            flex-shrink: 0;
        }
        .project-area .sol-img img {
            width: 100%;
            height: 300px;
            object-fit: cover;
            border-radius: 6px;
            transition: transform 0.5s ease;
        }
        
        .project-area .sol-item:hover .sol-img img {
            transform: scale(1.05);
        }
        
        /* 文字内容 */
        .project-area .sol-info {
            width: 62%;
        }
        .project-area .sol-info h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
        }
        .project-area .sol-info h3 a {
            color: #333;
            text-decoration: none;
            transition: color 0.3s ease;
        }
        .project-area .sol-info h3 a:hover {
            color: #ffb600;
        }
        .project-area .sol-info .desc {
            font-size: 14px;
            line-height: 1.8;
            color: #666;
            margin-bottom: 15px;
        }
        .project-area .sol-info .more-btn {
            display: inline-block;
            padding: 8px 20px;
            background: #ffb600;
            color: #fff;
            border-radius: 0px;
            text-decoration: none;
            font-size: 14px;
            transition: background 0.3s ease;
        }
        .project-area .sol-info .more-btn:hover {
            background: #e5a300;
        }
        
        /* 分页样式 */
        .pagination-wrapper {
            margin-top: 30px;
            text-align: center;
            animation: fadeInUp 0.6s ease-out 1.8s 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: #FFB600;
            border-color: #FFB600;
            color: #fff;
        }
        
        .page-link {
            position: relative;
            display: block;
            padding: .4rem .65rem; 
            margin-left: -1px;
            line-height: 1.2; 
            color: #FFB600;
            background-color: #fff;
            border: 1px solid #dee2e6;
            text-decoration: none;
            font-size: 14px; 
        }
        
        .page-link:hover {
            background-color: #FFB600;
            border-color: #FFB600;
            color: #fff;
        }
        
        .page-item.disabled .page-link {
            color: #6c757d;
            pointer-events: none;
            cursor: auto;
            background-color: #fff;
            border-color: #dee2e6;
        }
        
        /* 移动端适配 */
        @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;
            }
            
            .project-area .sol-item {
                gap: 60px;
            }
            
            .project-area .sol-img {
                width: 40%;
            }
            
            .project-area .sol-info {
                width: 60%;
            }
        }
        
        @media (max-width: 992px) {
            .banner-area {
                height: 140px;
            }
            
            .banner-title {
                font-size: 1.6rem;
            }
            
            .project-area .sol-item {
                gap: 40px;
            }
            
            .project-area .sol-img {
                width: 45%;
            }
            
            .project-area .sol-info {
                width: 55%;
            }
        }
        
        @media (max-width: 768px) {
            .banner-area {
                height: 130px;
            }
            
            .banner-title {
                font-size: 1.4rem;
                padding-bottom: 10px;
            }
            
            .banner-title::after {
                height: 2px;
            }
            
            .project-area .sol-category .nav-link {
                padding: 8px 16px;
                font-size: 14px;
            }
            
            .project-area .sol-item {
                flex-direction: column !important;
                gap: 20px;
            }
            
            .project-area .sol-img, 
            .project-area .sol-info {
                width: 100%;
            }
            
            .project-area .sol-info h3 {
                font-size: 18px;
            }
            
            .project-area .sol-img img {
                height: 250px;
            }
        }
        
        @media (max-width: 576px) {
            .banner-area {
                height: 120px;
            }
            
            .banner-title {
                font-size: 1.2rem;
                margin-bottom: 5px;
                padding-bottom: 8px;
            }
            
            .project-area .sol-category .nav-link {
                padding: 7px 12px;
                font-size: 13px;
            }
            
            .project-area .sol-item {
                margin-bottom: 30px;
                padding-bottom: 30px;
            }
            
            .project-area .sol-img img {
                height: 200px;
            }
            
            .project-area .sol-info h3 {
                font-size: 16px;
            }
            
            .page-link {
                padding: .35rem .55rem; 
                font-size: 13px; 
            }
        }