/* 产品中心特殊下拉 - 多列布局 */
        .products-dropdown {
            width: 1200px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 15px;
            padding: 15px;
            left: 50%;
            transform: translateX(-50%) translateY(15px);
        }
        
        .nav-menu > li:hover > .products-dropdown {
            transform: translateX(-20%) translateY(5px);
        }
        
        .product-category {
            padding: 15px;
            border-radius: 8px;
            transition: var(--transition);
        }
        
        .product-category:hover {
            background: rgba(0, 102, 204, 0.03);
        }
        
        .product-category h4 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
        }
        
        .product-category h4 i {
            background: var(--light-bg);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            font-size: 16px;
            color: var(--primary-blue);
        }
        
        .sub-items {
            list-style: none;
            padding-left: 4px;
        }
        
        .sub-items li {
            padding: 2px 0;
        }
        
        .sub-items a {
            color: var(--mid-text);
            font-size: 14px;
            transition: var(--transition);
            display: block;
            padding: 4px 0;
        }
        
        .sub-items a:hover {
            color: var(--primary-blue);
            padding-left: 5px;
        }
        
        .header-main {
            padding: 15px 0;
            background: var(--white);
        }
        
        .header-main .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .header-right {
            display: flex;
            align-items: center;
            gap: 20px;
        }
        
        /* 搜索框样式 */
        .search-container {
            position: relative;
        }
        
        .search-container input {
            padding: 12px 15px 12px 45px;
            border-radius: 30px;
            border: 1px solid var(--border-color);
            background: var(--white);
            color: var(--dark-text);
            font-size: 14px;
            width: 180px;
            transition: var(--transition);
        }
        
        .search-container input:focus {
            outline: none;
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.15);
            width: 240px;
        }
        
        .search-container input::placeholder {
            color: var(--light-text);
        }
        
        .search-container i {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--light-text);
        }
        
        /* 电话按钮样式 */
        .nav-phone {
            display: flex;
            align-items: center;
            padding: 12px 24px;
            background: var(--accent);
            color: var(--white);
            border-radius: 30px;
            font-weight: 500;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.25);
            font-size: 18px;
            gap: 8px;
        }
        
        .nav-phone:hover {
            background: var(--accent-dark);
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            font-size: 24px;
            color: var(--primary-dark);
            cursor: pointer;
            background: var(--light-bg);
            width: 44px;
            height: 44px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        
        .mobile-menu-btn:hover {
            background: rgba(0, 102, 204, 0.1);
            color: var(--primary-blue);
        }
        
        /* 移动端菜单样式 */
        @media (max-width: 1200px) {
            .nav-menu > li > a {
                padding: 12px 15px;
                font-size: 15px;
            }
            
            .products-dropdown {
                width: 700px;
            }
        }
        
        @media (max-width: 992px) {
            .nav-menu {
                position: fixed;
                top: var(--header-height);
                left: -100%;
                width: 80%;
                max-width: 400px;
                height: calc(100vh - var(--header-height));
                background: var(--white);
                flex-direction: column;
                padding: 20px;
                box-shadow: 5px 0 15px rgba(0, 0, 0, 0.1);
                overflow-y: auto;
                transition: left 0.3s ease;
                justify-content: flex-start;
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu > li {
                width: 100%;
            }
            
            .nav-menu > li > a {
                padding: 15px;
                border-radius: 6px;
                margin-bottom: 5px;
                justify-content: space-between;
            }
            
            .nav-menu > li > a i:last-child {
                margin-left: auto;
                transition: transform 0.3s ease;
            }
            
            .nav-menu > li > a.has-dropdown.active i:last-child {
                transform: rotate(180deg);
            }
            
            .dropdown {
                position: static;
                width: 100%;
                box-shadow: none;
                border: none;
                margin: 10px 0;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
                padding: 0 0 0 20px;
            }
            
            .dropdown.active {
                display: block;
            }
            
            .products-dropdown {
                width: 100%;
                grid-template-columns: 1fr;
                gap: 10px;
                padding: 10px 0 10px 20px;
                left: 0;
                transform: none;
            }
            
            .nav-menu > li:hover > .products-dropdown {
                transform: none;
            }
            
            .product-category h4 {
                font-size: 15px;
                margin-bottom: 10px;
            }
            
            .sub-items {
                padding-left: 30px;
            }
            
            .search-container, .nav-phone span {
                display: none;
            }
            
            .mobile-menu-btn {
                display: flex;
            }
            
            .nav-phone {
                padding: 10px;
                font-size: 0;
            }
            
            .nav-phone i {
                margin: 0;
                font-size: 18px;
            }
        }
        
        @media (max-width: 768px) {
		     .header-main {
            padding: 2px 0;
            background: var(--white);
        }
            .top-bar .container {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }
            
            .contact-info {
                justify-content: center;
                flex-wrap: wrap;
            }
            
            .nav-container {
                padding: 15px 0;
                height: auto;
            }
            .logo{
               display: flex;
               align-items: center;
               height:100px;
           }
            .header-main .container {
                flex-wrap: wrap;
            }
		 .header-right {
            display: none;
           }
        }
        
        /* 行业应用头部 */
        .industry-header {
            background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-dark) 100%);
            color: var(--white);
            padding: 80px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .industry-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23004080" fill-opacity="0.1" d="M0,224L48,218.7C96,213,192,203,288,181.3C384,160,480,128,576,138.7C672,149,768,203,864,208C960,213,1056,171,1152,149.3C1248,128,1344,128,1392,128L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: center;
        }
        
        .industry-header-content {
            position: relative;
            z-index: 2;
        }
        
        .industry-header h1 {
            font-size: 3rem;
            margin-bottom: 20px;
            font-weight: 700;
        }
        
        .industry-header p {
            font-size: 1.3rem;
            max-width: 800px;
            margin: 0 auto 30px;
            opacity: 0.9;
        }
        
        .industry-icon {
            font-size: 4rem;
            margin-bottom: 30px;
            color: rgba(255, 255, 255, 0.9);
        }
        
        /* 行业概述 */
        .industry-overview {
            background-color: var(--white);
            padding: 80px 0;
        }
        
        .overview-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        
        .overview-text h2 {
            color: var(--primary-dark);
            margin-bottom: 25px;
            font-size: 2.2rem;
        }
        
        .overview-text p {
            color: var(--mid-text);
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        .overview-image {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
        }
        
        .overview-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }
        
        .overview-image:hover img {
            transform: scale(1.05);
        }
        
        /* 挑战与解决方案 */
        .challenges-solutions {
            background-color: var(--light-bg);
        }
        
        .challenges-solutions-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
        }
        
        .challenges, .solutions {
            background: var(--white);
            border-radius: 12px;
            padding: 40px;
            box-shadow: var(--card-shadow);
        }
        
        .challenges h2, .solutions h2 {
            color: var(--primary-dark);
            margin-bottom: 30px;
            font-size: 1.8rem;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .challenges h2 i {
            color: var(--accent);
        }
        
        .solutions h2 i {
            color: var(--primary-blue);
        }
        
        .challenge-list, .solution-list {
            list-style: none;
        }
        
        .challenge-list li, .solution-list li {
            padding: 15px 0;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            align-items: flex-start;
            gap: 15px;
        }
        
        .challenge-list li:last-child, .solution-list li:last-child {
            border-bottom: none;
        }
        
        .challenge-list em {
            color: var(--accent);
            margin-top: 5px;
        }
        
        .solution-list em {
            color: var(--primary-blue);
            margin-top: 5px;
        }
        
        /* 应用案例 */
        .application-cases {
            background-color: var(--white);
        }
        
        .cases-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .case-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }
        
        .case-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--hover-shadow);
        }
        
        .case-image {
            height: 200px;
            background-color: var(--light-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        
        .case-image-content {
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            transition: transform 0.5s ease;
        }
        
        .case-card:hover .case-image-content {
            transform: scale(1.05);
        }
        
        .case-content {
            padding: 25px;
        }
        
        .case-content h3 {
            color: var(--primary-dark);
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        
        .case-content p {
            color: var(--mid-text);
            margin-bottom: 20px;
            line-height: 1.6;
        }
        
        .case-stats {
            display: flex;
            justify-content: space-between;
            background: var(--light-bg);
            border-radius: 8px;
            padding: 15px;
            margin: 20px 0;
        }
        
        .stat-item {
            text-align: center;
            flex: 1;
        }
        
        .stat-value {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--accent);
        }
        
        .stat-label {
            font-size: 0.85rem;
            color: var(--light-text);
        }
        
        .case-footer {
            margin-top: 20px;
            text-align: center;
        }
        
        .case-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            background: transparent;
            border: 1px solid var(--primary-blue);
            color: var(--primary-blue);
            border-radius: 6px;
            font-weight: 500;
            transition: var(--transition);
            font-size: 0.95rem;
            gap: 8px;
        }
        
        .case-link:hover {
            background: var(--primary-blue);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 102, 204, 0.2);
        }
        .view-more-container {
            text-align: center;
            margin-top: 40px;
        }
        /* 推荐产品 */
        .recommended-products {
            background-color: var(--light-bg);
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--card-shadow);
            transition: var(--transition);
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--hover-shadow);
        }
        
        .product-img {
            height: 240px;
            background-color: #eef2f7;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .product-img img {
            max-width: 100%;
            object-fit: contain;
        }
        
        .product-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--accent);
            color: var(--white);
            padding: 6px 14px;
            border-radius: 30px;
            font-size: 12px;
            font-weight: 500;
        }
        
        .product-info {
            padding: 25px;
            border-top: 3px solid var(--primary-blue);
        }
        
        .product-info h3 {
		    text-align: center;
            color: var(--primary-dark);
            margin-bottom: 10px;
            font-size: 1.4rem;
        }
        
        .product-info p {
            color: var(--mid-text);
            margin-bottom: 15px;
            line-height: 1.6;
        }
        
        .product-specs {
            display: flex;
            margin: 20px 0;
            padding: 20px 0;
            border-top: 1px dashed #eee;
            border-bottom: 1px dashed #eee;
        }
        
        .spec {
            flex: 1;
            text-align: center;
            padding: 0 10px;
        }
        
        .spec-value {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--accent);
        }
        
        .spec-label {
            font-size: 0.85rem;
            color: var(--light-text);
        }
        
        .product-actions {
            display: flex;
            justify-content: space-between;
            margin-top: 15px;
        }
        
        .btn-small {
            padding: 10px 20px;
            font-size: 14px;
        }
  
        /* 响应式设计 */
        @media (max-width: 992px) {
            .overview-content,
            .challenges-solutions-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .industry-header h1 {
                font-size: 2.5rem;
            }
            
            .industry-header p {
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 768px) {
            .section {
                padding: 60px 0;
            }
            
            .section-title {
                margin-bottom: 40px;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .section-title h2::after {
                bottom: -10px;
                width: 60px;
                height: 3px;
            }
            
            .section-title p {
                font-size: 1rem;
                margin-top: 20px;
            }
            
            .industry-header {
                padding: 60px 0;
            }
            
            .industry-header h1 {
                font-size: 2rem;
            }
            
            .industry-header p {
                font-size: 1rem;
            }
            
            .industry-icon {
                font-size: 3rem;
            }
            
            .overview-text h2 {
                font-size: 1.8rem;
            }
            
            .challenges, .solutions {
                padding: 30px;
            }
            
            .cases-grid,
            .products-grid,
            .resources-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .product-specs {
                flex-direction: column;
                gap: 15px;
                margin: 15px 0;
                padding: 15px 0;
            }
            
            .spec {
                display: flex;
                justify-content: space-between;
                align-items: center;
                text-align: left;
                padding: 5px 0;
            }
            
            .spec-value, .spec-label {
                margin: 0;
            }
            
            .product-actions {
                flex-direction: column;
                gap: 10px;
            }
            
            .cta-form {
                flex-direction: column;
            }
            
            .form-group {
                flex: 1 1 100%;
            }
        }
        
        @media (max-width: 576px) {
            .industry-header h1 {
                font-size: 1.8rem;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .challenges, .solutions {
                padding: 20px;
            }
            
            .case-stats {
                flex-direction: column;
                gap: 15px;
            }
        }