.solution-banner {
            background: url(/img222/banner/sol.jpg) no-repeat center center;
            color: #fff;
        }

        .solution-title h1{
          font-size: 28px;
          color: #333;
        }
        /* 产品区域样式 */
        .products-section {
            background: white;
            margin: 10px 0 0 0;
        }

        .section-title {
            color: #333;
            font-size: 1.8rem;
            margin-bottom: 25px;
            font-weight: 600;
            border-bottom: 2px solid #f0f0f0;
            padding-bottom: 10px;
        }

        .products-grid {
            display: none;
            grid-template-columns: repeat(auto-fill, minmax(600px, 1fr));
            margin: 0 -30px;
        }

        .products-grid.active {
            display: grid;
            animation: fadeIn 0.5s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }

        .product-card {
            background: #fff;
            overflow: hidden;
            box-shadow: 0 0 16px rgba(0, 0, 0, 0.06);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin: 30px;
        }

        .product-image {
            height: 460px;
            overflow: hidden;
        }

        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .product-info {
            padding: 24px 40px;
        }

        .product-title {
            color: #333;
            font-size: 24px;
            margin-bottom: 16px;
            height: 72px;
            overflow: hidden;
        }

        .product-description {
            color: #666;
            font-size: 1rem;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .product-actions {
            margin-top: 15px;
        }

        .product-actions a {
            display: inline-block;
            background: #3498db;
            color: white;
            padding: 8px 16px;
            text-decoration: none;
            font-weight: 500;
            transition: background 0.3s ease;
        }

        .product-actions a:hover {
            background: #2980b9;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {

            .main-content {
                grid-template-columns: 1fr;
            }
            
            .sidebar {
                position: static;
                margin-bottom: 20px;
            }
            
            .category-list {
                display: flex;
                flex-wrap: wrap;
                justify-content: space-between;
            }
            .product-info{
                padding: 15px;
            }

            .product-image{
                height: auto;
            }
            
            .nav1-item {
                flex: 0 0 calc(50% - 10px);
                margin-bottom: 10px;
                border: 1px solid #f0f0f0;
            }
            
            .nav1-item:hover, .nav1-item.active {
                border-left: 4px solid #3498db;
            }

            .product-title{
                font-size: 1.1rem;
                height: 3.3rem;
            }

            .product-description{
                font-size: .8rem;
            }


        }

        @media (max-width: 776px) {

            .container {
                padding: 10px;
            }
            
            .products-grid {
                grid-template-columns: 1fr;
                margin: -10px;
            }

            .product-card{
                margin: 10px;
            }
            
            .nav1-item {
                flex: 0 0 100%;
            }

            .solution-title h1{
              font-size: 22px;
            }
            .solution-title p{
              margin-top: 10px;
            }
            .solution-title div{
              margin: 20px 0;
            }
        }


.sub-category-nav {
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
    gap: 30px;
    background: #fff;
    z-index: 30;
    position: sticky;
    top: 70px;
    padding: 22px 0;
    /*padding: 22px 20%;
    width: 140%;
    margin: 0 0 0 -20%;
    box-shadow: 0 8px 16px -8px rgba(0, 0, 0, 0.06);*/
}

.sub-category-nav a {
    width: 280px;
    height: 80px;
    text-align: center;
    background: #f5f5f5;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}


.sub-category-nav a.active,.sub-category-nav a:hover {
    background: #f8c300;
    color: #002845;
    font-weight: 500;
}

@media (max-width: 992px) {
    .sub-category-nav {
        display: none;
    }
}


        .main-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: #0a2a3b;
            margin-bottom: 1.2rem;
        }

        .solution-title{
            color: #555;
        }

        .solution-title strong {
            color: #333;
        }

        .solution-list li {
            padding: 1rem 0 1rem 1.8rem;
            border-bottom: 1px solid #eef2f7;
            position: relative;
            line-height: 1.7;
        }

        .solution-list li:last-child {
            border-bottom: none;
        }

        .solution-list li::before {
            content: "▸";
            position: absolute;
            left: 0;
            top: 1rem;
            color: #f8c300;
            font-size: 1.2rem;
        }

        .solution-list .sub-item {
            display: block;
            padding-left: 1.2rem;
            font-size: 0.95rem;
        }

        .solution-list .sub-item em {
            font-style: normal;
            font-weight: 600;
        }

        .solution-title .contact {
            text-align: center;
            font-size: 1rem;
            font-weight: 500;
            color: #333;
            padding: 0.8rem;
            border-top: 2px solid #f7f7f7;
            margin-top: 0.5rem;
        }