.banner-image::before {
        position: absolute;
        content: "";
        width: 100%;
        height: 300px;
        left: 0;
        top: 0;
        background: -webkit-gradient(linear, left top, left bottom, color-stop(80%, transparent), to(rgba(0, 0, 0, .5)));
        background: -webkit-linear-gradient(top, transparent 80%, rgba(0, 0, 0, .8) 100%);
        background: -o-linear-gradient(top, transparent 80%, rgba(0, 0, 0, .8) 100%);
        background: linear-gradient(to bottom, transparent 20%, rgba(0, 0, 0, .8) 100%);
        -o-transition: all 0.4s ease;
        transition: all 0.4s ease;
        -webkit-transition: all 0.4s ease;
        -moz-transition: all 0.4s ease;
        -ms-transition: all 0.4s ease;
    }
.banner-image img{width:100%; display:block; object-fit:cover;}
.container {
            max-width: 1600px;
            margin: 0 auto;
            padding: 2rem 15px;
        }
        
        /* 章节样式 */
        .section {
            margin-bottom: 4rem;
            padding: 0 20px;
        }
        
        .section-title {
            font-size: 4rem;
            font-weight: 600;
            text-align: center;
            margin-bottom: 2rem;
            color: #2c3e50;
            position: relative;
        }
        
        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background-color: #3498db;
            margin: 1rem auto 0;
        }
        
        /* 方案介绍 */
        .intro-section .card {
            background-color: #fff;
            border-radius: 12px;
            padding: 2.5rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        }
        
        .intro-section .card-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            color: #34495e;
        }
        
        .intro-section .card-content {
            margin-bottom: 1.5rem;
        }
        
        /* 方案架构 - 图片展示 */
        .architecture-section .card {
            background-color: #fff;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            text-align: center;
        }
        
        .architecture-image {
            max-width: 100%;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        /* 方案特点 - 6个模块 */
        .features-section .card {
            background-color: #fff;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 2rem;
        }
        
        .feature-card {
            padding: 2rem;
            border-radius: 8px;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        }
        
        .feature-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            background-color: #3498db;
            color: white;
            border-radius: 50%;
            font-size: 1.2rem;
            font-weight: 600;
            line-height: 40px;
            margin-bottom: 1rem;
        }
        
        .feature-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        
        /* 应用场景 - 图片展示 + 图文列表 */
        .scenarios-section .card {
            background-color: #fff;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
        }
        
        /* 大图展示区域 */
        .main-scenario-image-container {
            position: relative;
            width: 100%;
            max-height: 500px; /* 控制大图高度 */
            overflow: hidden;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            margin-bottom: 1rem;
        }
        
        .main-scenario-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: opacity 0.5s ease; /* 添加淡入淡出效果 */
        }
        
        /* 场景标题（显示在大图下方） */
        .scenario-title {
            text-align: center;
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 1rem;
            color: #2c3e50;
        }
        
        /* 缩略图区域 */
        .thumbnails {
            display: flex;
            justify-content: center;
            gap: 1rem;
            flex-wrap: wrap; /* 允许在小屏幕上换行 */
        }
        
        .thumbnail {
            width: 100px; /* 缩略图宽度 */
            height: 100px; /* 缩略图高度 */
            object-fit: cover;
            border-radius: 8px;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            border: 3px solid transparent;
        }
        
        .thumbnail:hover {
            transform: scale(1.05);
            box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
        }
        
        .thumbnail.active {
            border-color: #3498db; /* 活动缩略图边框颜色 */
        }
        
        /* 应用场景文字描述（可选） */
        .scenarios-description {
            text-align: center;
            margin-top: 1rem;
            color: #7f8c8d;
            font-size: 0.9rem;
        }
        
        /* 产品中心 - 背景图 + 文字 */
        .products-section .card {
            background-color: #fff;
            border-radius: 12px;
            padding: 1rem;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
            position: relative;
            overflow: hidden;
            height: 800px; /* 固定高度以匹配背景图比例 */
            display: flex;
            flex-direction: column;
            justify-content: flex-end; /* 文字层在底部 */
        }
        
        .products-background {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('https://images.unsplash.com/photo-1551434678-e076c223a692?ixlib=rb-1.2.1&auto=format&fit=crop&w=1600&q=80'); /* 替换为您的1600x800图片URL */
            background-size: cover;
            background-position: center;
            z-index: -1;
        }
        
        .products-text-layer {
            padding: 2rem;
            background-color: rgba(0, 0, 0, 0.6); /* 半透明黑色背景 */
            color: white;
            width: 100%; /* 确保文字层宽度占满卡片 */
        }
        
        .products-title {
            font-size: 2.5rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        .products-table {
            width: 100%;
            max-width: 100%; /* 表格宽度占满文字层 */
            border-collapse: collapse;
            margin-top: 1rem;
        }
        
        .products-table th, .products-table td {
            padding: 12px 15px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.3);
        }
        
        .products-table th {
            background-color: rgba(0, 0, 0, 0.4);
            font-weight: 600;
        }
        
        .products-table tr:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }
        
        /* 自适应调整 */
        @media (max-width: 1024px) {
            .section-title {
                font-size: 1.8rem;
            }
            
            .feature-card, .product-card {
                padding: 1.5rem;
            }
            
            .main-scenario-image-container {
                max-height: 400px; /* 调整大图高度 */
            }
            
            .thumbnail {
                width: 80px;
                height: 80px;
            }
            
            .products-title {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 768px) {
            .section-title {
                font-size: 1.6rem;
            }
            
            .feature-card, .product-card {
                padding: 1.2rem;
            }
            
            .main-scenario-image-container {
                max-height: 300px; /* 进一步调整大图高度 */
            }
            
            .thumbnails {
                gap: 0.5rem; /* 缩小缩略图间距 */
            }
            
            .thumbnail {
                width: 70px;
                height: 70px;
            }
            
            .products-title {
                font-size: 1.8rem;
            }
            
            .products-table th, .products-table td {
                padding: 8px 10px; /* 减少内边距 */
                font-size: 0.9rem; /* 减小字体大小 */
            }
        }
        
        @media (max-width: 480px) {
            .section-title {
                font-size: 1.4rem;
            }
            
            .feature-card, .product-card {
                padding: 1rem;
            }
            
            .main-scenario-image-container {
                max-height: 250px; /* 最终调整大图高度 */
            }
            
            .thumbnails {
                gap: 0.3rem;
            }
            
            .thumbnail {
                width: 60px;
                height: 60px;
            }
            
            .products-title {
                font-size: 1.5rem;
            }
            
            .products-table th, .products-table td {
                padding: 6px 8px;
                font-size: 0.8rem;
            }
        }