/* Banner容器样式 */
        .banner-container {
            position: relative;
            width: 100%;
            height: 800px;
            overflow: hidden;
            background-color: #f5f7fa;
        }
        
        /* Banner列表样式 */
        .banner-list {
            display: flex;
            position: relative;
            width: 100%;
            height: 100%;
            margin: 0;
            padding: 0;
            list-style: none;
            transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        /* 单个Banner项样式 */
        .banner-item {
            flex: 0 0 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0 10%;
            box-sizing: border-box;
        }
        
        /* Banner内容样式 */
        .banner-content {
            max-width: 1200px;
            text-align: center;
            color: white;
            text-shadow: 0 1px 3px rgba(0,0,0,0.3);
            z-index: 10;
        }
        
        .banner-title {
            font-size: 4rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            letter-spacing: -0.03em;
            animation: fadeInUp 0.8s ease-out;
        }
        
        .banner-subtitle {
            font-size: 1.8rem;
            font-weight: 300;
            margin-bottom: 2.5rem;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.4;
            animation: fadeInUp 0.8s ease-out 0.2s forwards;
            opacity: 0;
        }
        
        .banner-button {
            display: inline-block;
            padding: 15px 40px;
            background-color: var(--accent-red);
            color: white;
            text-decoration: none;
            font-size: 1.2rem;
            font-weight: 600;
            border-radius: 4px;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
            animation: fadeInUp 0.8s ease-out 0.4s forwards;
            opacity: 0;
        }
        
        .banner-button:hover {
            background-color: #c0392b;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0,0,0,0.15);
        }
        
        /* 指示器样式 */
        .banner-indicator {
            position: absolute;
            bottom: 50px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            z-index: 20;
        }
        
        .indicator-dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            margin: 0 8px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .indicator-dot.active {
            background: white;
            transform: scale(1.2);
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
        }
        
        /* 导航按钮样式 */
        .banner-nav {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 60px;
            height: 60px;
            background: rgba(27, 45, 107, 0.7);
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            font-size: 24px;
            z-index: 20;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            opacity: 0.7;
        }
        
        .banner-nav:hover {
            opacity: 1;
            background: var(--accent-red);
        }
        
        .banner-prev {
            left: 30px;
        }
        
        .banner-next {
            right: 30px;
        }
        
        /* 覆盖层 */
        .overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(27, 45, 107, 0.3);
            z-index: 5;
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .banner-title {
                font-size: 3.2rem;
            }
            
            .banner-subtitle {
                font-size: 1.5rem;
            }
        }
        
        @media (max-width: 992px) {
            .banner-container {
                height: 600px;
            }
            
            .banner-title {
                font-size: 2.8rem;
            }
            
            .banner-subtitle {
                font-size: 1.3rem;
            }
        }
        
        @media (max-width: 768px) {
            .banner-container {
                height: 500px;
            }
            
            .banner-title {
                font-size: 2.3rem;
            }
            
            .banner-subtitle {
                font-size: 1.1rem;
            }
            
            .banner-content {
                padding: 0 5%;
            }
            
            .banner-nav {
                width: 45px;
                height: 45px;
                font-size: 18px;
            }
            
            .banner-prev {
                left: 15px;
            }
            
            .banner-next {
                right: 15px;
            }
            
            .indicator-dot {
                width: 10px;
                height: 10px;
                margin: 0 6px;
            }
        }
        
        @media (max-width: 480px) {
            .banner-container {
                height: 400px;
            }
            
            .banner-title {
                font-size: 1.8rem;
            }
            
            .banner-subtitle {
                font-size: 1rem;
            }
            
            .banner-button {
                padding: 12px 30px;
                font-size: 1rem;
            }
            
            .banner-indicator {
                bottom: 30px;
            }
        }
/* 材料展示区域样式 */
        .materials-section {
            padding: 60px 20px;
            background: #f9f9f9;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        
        .section-title {
            color: #1B2D6B;
            font-size: 2.2rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .section-subtitle {
            color: #666;
            font-size: 1.1rem;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .materials-container {
            position: relative;
            max-width: 1440px;
            margin: 0 auto;
            overflow: hidden;
        }
        
        .materials-track {
            display: flex;
            gap: 25px;
            padding: 15px;
            overflow-x: auto;
            scrollbar-width: thin; /* Firefox */
            scrollbar-color: #1B2D6B #f1f1f1;
            scroll-behavior: smooth;
            -ms-overflow-style: none; /* IE and Edge */
            scrollbar-width: none; /* Firefox */
        }
        
        /* 隐藏滚动条但保留功能 */
        .materials-track::-webkit-scrollbar {
            display: none; /* Chrome, Safari, Opera */
        }
        
        .material-card {
            flex: 0 0 300px;
            border-radius: 12px;
            overflow: hidden;
            background: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            transform: translateZ(0);
        }
        
        .material-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(27, 45, 107, 0.15);
        }
        
        .material-image {
            height: 220px;
            overflow: hidden;
        }
        
        .material-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .material-card:hover .material-image img {
            transform: scale(1.05);
        }
        
        .material-content {
            padding: 20px;
            text-align: center;
        }
        
        .material-title {
            color: #1B2D6B;
            font-size: 1.2rem;
            font-weight: 600;
            margin: 10px 0;
        }
        
        /* 导航控制 */
        .scroll-controls {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 30px;
        }
        
        .scroll-btn {
            background: #1B2D6B;
            color: white;
            border: none;
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .scroll-btn:hover {
            background: #e74c3c;
            transform: scale(1.1);
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .material-card {
                flex: 0 0 280px;
            }
        }
        
        @media (max-width: 992px) {
            .materials-section {
                padding: 50px 15px;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .section-subtitle {
                font-size: 1rem;
            }
            
            .material-card {
                flex: 0 0 260px;
            }
        }
        
        @media (max-width: 768px) {
            .materials-section {
                padding: 40px 10px;
            }
            
            .section-header {
                margin-bottom: 30px;
            }
            
            .section-title {
                font-size: 1.6rem;
            }
            
            .material-card {
                flex: 0 0 240px;
            }
            
            .material-title {
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 576px) {
            .material-card {
                flex: 0 0 220px;
            }
            
            .scroll-controls {
                margin-top: 20px;
            }
            
            .scroll-btn {
                width: 45px;
                height: 45px;
            }
        }
        /* 产品展示区域样式 */
        .products-section {
            padding: 80px 20px;
            background: #ffffff;
            position: relative;
            
        }
		/* 新增左侧导航样式 */
        .product-sidebar {
            position: sticky;
            top: 120px; /* 在顶部导航下方 */
            float: left;
            width: 220px;
            padding: 25px 15px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(27, 45, 107, 0.1);
            margin-right: 30px;
            z-index: 10;
            max-height: calc(100vh - 140px);
            overflow-y: auto;
            scrollbar-width: thin;
            scrollbar-color: #1B2D6B #f1f1f1;
        }
        
        .product-sidebar::-webkit-scrollbar {
            width: 6px;
        }
        
        .product-sidebar::-webkit-scrollbar-track {
            background: #f1f1f1;
            border-radius: 10px;
        }
        
        .product-sidebar::-webkit-scrollbar-thumb {
            background: #1B2D6B;
            border-radius: 10px;
        }
        
        .product-categories {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        
        .product-categories li {
            margin-bottom: 8px;
        }
        
        .product-categories a {
            display: block;
            padding: 12px 15px;
            color: #333;
            text-decoration: none;
            border-radius: 6px;
            transition: all 0.3s ease;
            position: relative;
            font-weight: 500;
        }
        
        .product-categories a:hover {
            background: rgba(27, 45, 107, 0.05);
            color: #1B2D6B;
        }
        
        .product-categories a.active {
            background: rgba(27, 45, 107, 0.1);
            color: #1B2D6B;
            font-weight: 600;
        }
        
        .product-categories a.active::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            height: 100%;
            width: 4px;
            background: #e74c3c;
            border-radius: 0 4px 4px 0;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .product-section-header {
            display: flex;
            align-items: center;
            margin-bottom: 40px;
            border-bottom: 2px solid #1B2D6B;
            padding-bottom: 15px;
            scroll-margin-top: 100px;
        }
        
        .product-section-title {
            color: #1B2D6B;
            font-size: 2.2rem;
            font-weight: 700;
            margin: 0;
            flex-grow: 1;
        }
        
        .view-all {
            color: #e74c3c;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .view-all:hover {
            text-decoration: underline;
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }
        
        .land-product-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            position: relative;
        }
        
        .land-product-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(27, 45, 107, 0.15);
        }
        
        .product-tag {
            position: absolute;
            top: 15px;
            left: 15px;
            background: #e74c3c;
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            z-index: 10;
        }
        
        .product-tag.featured {
            background: #1B2D6B;
        }
        
        .product-image {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        
        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .land-product-card:hover .product-image img {
            transform: scale(1.05);
        }
        
        .product-content {
            padding: 20px;
        }
        
        .product-name {
            color: #1B2D6B;
            font-size: 1.1rem;
            font-weight: 600;
            margin: 0 0 10px;
            min-height: 42px;
        }
        
        .product-features {
            color: #666;
            font-size: 0.9rem;
            line-height: 1.6;
            margin-bottom: 15px;
        }
        
        .product-features li {
            margin-bottom: 5px;
            position: relative;
            padding-left: 15px;
        }
        
        .product-features li:before {
            content: "•";
            color: #e74c3c;
            position: absolute;
            left: 0;
        }
        
        .product-link {
            display: inline-block;
            color: #e74c3c;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        .product-link:hover {
            text-decoration: underline;
        }
        
        .product-link:after {
            content: "→";
            margin-left: 5px;
            transition: transform 0.3s ease;
        }
        
        .product-link:hover:after {
            transform: translateX(3px);
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .products-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        
        @media (max-width: 992px) {
            .products-section {
                padding: 60px 15px;
                padding-left: 0;
            }
            
            .product-section-title {
                font-size: 1.8rem;
            }
            
        }
        
        @media (max-width: 768px) {
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            
            .product-section-header {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .view-all {
                margin-top: 10px;
            }
            
            
        }
        
        @media (max-width: 576px) {
            .products-grid {
                grid-template-columns: 1fr;
            }
            
            .product-section-title {
                font-size: 1.6rem;
            }
            
            .product-name {
                min-height: auto;
            }
            
           
        }
/* 新增横幅广告样式 */
        .custom-solution-banner {
            background: linear-gradient(135deg, #1B2D6B 0%, #2c3e50 100%);
            padding: 60px 20px;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .solution-banner-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            z-index: 2;
        }
        
        .solution-banner-content {
            flex: 1;
            max-width: 600px;
            padding-right: 40px;
        }
        
        .solution-banner-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        
        .solution-banner-subtitle {
            font-size: 1.2rem;
            margin-bottom: 30px;
            line-height: 1.6;
            opacity: 0.9;
        }
        
        .highlight {
            color: #e74c3c;
            font-weight: 600;
        }
        
        .solution-form {
            flex: 1;
            max-width: 500px;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 12px;
            padding: 30px;
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        
        .solution-form-group {
            margin-bottom: 20px;
        }
        
        .solution-form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
        }
        
        .solution-form-group input,
        .solution-form-group textarea {
            width: 100%;
            padding: 14px 16px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(0, 0, 0, 0.2);
            color: white;
            font-size: 1rem;
            transition: all 0.3s ease;
        }
        
        .solution-form-group input:focus,
        .solution-form-group textarea:focus {
            outline: none;
            border-color: #e74c3c;
            box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.2);
        }
        
        .solution-form-group input::placeholder,
        .solution-form-group textarea::placeholder {
            color: rgba(255, 255, 255, 0.6);
        }
        
        .submit-btn {
            display: block;
            width: 100%;
            padding: 16px;
            background: #e74c3c;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .submit-btn:hover {
            background: #c0392b;
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }
        
        .solution-banner-pattern {
            position: absolute;
            top: 0;
            right: 0;
            width: 40%;
            height: 100%;
            opacity: 0.05;
            background-image: 
                radial-gradient(#fff 1px, transparent 1px),
                radial-gradient(#fff 1px, transparent 1px);
            background-size: 40px 40px;
            background-position: 0 0, 20px 20px;
            z-index: 1;
        }
        
        /* 移动端适配 */
        @media (max-width: 992px) {
            .solution-banner-container {
                flex-direction: column;
            }
            
            .solution-banner-content {
                padding-right: 0;
                margin-bottom: 40px;
                text-align: center;
            }
            
            .solution-form {
                width: 100%;
                max-width: 100%;
            }
            
            .solution-banner-title {
                font-size: 1.8rem;
            }
            
            .solution-banner-subtitle {
                font-size: 1.1rem;
            }
        }
        
        @media (max-width: 576px) {
            .custom-solution-banner {
                padding: 40px 15px;
            }
            
            .solution-banner-title {
                font-size: 1.6rem;
            }
            
            .solution-form {
                padding: 20px;
            }
        }
        
        /* 微动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .solution-banner-content {
            animation: fadeInUp 0.8s ease-out;
        }
        
        .solution-form {
            animation: fadeInUp 0.8s ease-out 0.2s;
            animation-fill-mode: both;
        }
	/* 特性展示区域 */
        .features-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
        }
        
        /* 每个特性区块 */
        .feature-section {
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            margin-bottom: 50px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .feature-section:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }
        
        .feature-content {
            display: flex;
            flex-wrap: wrap;
        }
        
        .feature-image {
            flex: 1;
            min-width: 300px;
            padding: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .feature-image img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            transition: transform 0.3s ease;
        }
        
        .feature-section:hover .feature-image img {
            transform: scale(1.03);
        }
        
        .feature-text {
            flex: 1;
            min-width: 300px;
            padding: 30px;
        }
        
        .feature-title {
            text-align: center;
            color: #1b2d6b;
            font-weight: 700;
            margin-bottom: 25px;
            font-size: 1.8rem;
            position: relative;
            padding-bottom: 15px;
        }
        
        .feature-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: #e74c3c;
        }
        
        .feature-list {
            list-style-type: square;
            padding-left: 25px;
        }
        
        .feature-list li {
            margin-bottom: 15px;
            font-size: 1.1rem;
            position: relative;
            padding-left: 10px;
        }
        
        .feature-list li::marker {
            color: #e74c3c;
        }
        
        /* 移动端适配 */
        @media (max-width: 768px) {
            .feature-content {
                flex-direction: column;
            }
            
            .feature-image, .feature-text {
                min-width: 100%;
                padding: 20px;
            }
            
            .feature-title {
                font-size: 1.5rem;
                margin-bottom: 20px;
            }
            
            .feature-list li {
                font-size: 1rem;
                margin-bottom: 12px;
            }
        }
        
        /* 悬停动画 */
        .feature-list li {
            transition: all 0.3s ease;
        }
        
        .feature-list li:hover {
            transform: translateX(5px);
            color: #1b2d6b;
        }
		/* 客户合影展示区域样式 */
        .client-showcase-section {
            padding: 80px 20px;
            background-color: #ffffff;
            position: relative;
        }
        
        .showcase-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .showcase-title {
            color: #1B2D6B;
            font-size: 2.2rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .showcase-subtitle {
            color: #666;
            font-size: 1.1rem;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .showcase-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            max-width: 1440px;
            margin: 0 auto;
        }
        
        .showcase-item {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            background: white;
        }
        
        .showcase-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(27, 45, 107, 0.15);
        }
        
        .showcase-image {
            height: 280px;
            overflow: hidden;
            position: relative;
        }
        
        .showcase-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .showcase-item:hover .showcase-image img {
            transform: scale(1.05);
        }
        
        .showcase-content {
            padding: 20px;
            text-align: center;
        }
        
        .showcase-name {
            color: #1B2D6B;
            font-size: 1.2rem;
            font-weight: 600;
            margin: 10px 0 5px;
        }
        
        .showcase-location {
            color: #666;
            font-size: 0.9rem;
            font-style: italic;
        }
        
        /* 证书展示区域样式 */
        .certifications-section {
            padding: 80px 20px;
            background-color: #f8f9fb;
            position: relative;
        }
        
        .cert-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .cert-title {
            color: #1B2D6B;
            font-size: 2.2rem;
            margin-bottom: 15px;
            font-weight: 700;
        }
        
        .cert-subtitle {
            color: #666;
            font-size: 1.1rem;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .cert-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            max-width: 1440px;
            margin: 0 auto;
        }
        
        .cert-item {
            text-align: center;
            padding: 30px;
            background: white;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .cert-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(27,45,107,0.12);
        }
        
        .cert-img-container {
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 25px;
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        
        .cert-img-container img {
            max-width: 100%;
            max-height: 280px;
            width: auto;
            height: auto;
            object-fit: contain;
            transition: transform 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94); 
        }
        
        .cert-item:hover img {
            transform: scale(1.05);
        }
        
        .cert-label {
            display: block;
            color: #1B2D6B;
            font-size: 1.1rem;
            font-weight: 500;
            margin-top: 15px;
        }
        
        /* 图片放大查看器 */
        .image-viewer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
            z-index: 2000;
            display: flex;
            justify-content: center;
            align-items: center;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease;
            backdrop-filter: blur(10px);
        }
        
        .image-viewer-overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .image-viewer-container {
            position: relative;
            max-width: 90%;
            max-height: 90%;
            display: flex;
            flex-direction: column;
        }
        
        .image-viewer-img {
            max-width: 100%;
            max-height: 80vh;
            object-fit: contain;
            cursor: grab;
            transform-origin: center center;
            transition: transform 0.2s ease;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            border: 2px solid rgba(255, 255, 255, 0.1);
        }
        
        .image-viewer-controls {
            position: absolute;
            top: 15px;
            right: 15px;
            display: flex;
            gap: 10px;
            z-index: 10;
        }
        
        .image-viewer-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            font-size: 1.2rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            backdrop-filter: blur(5px);
        }
        
        .image-viewer-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.1);
        }
        
        .image-viewer-title {
            color: white;
            text-align: center;
            margin-top: 15px;
            font-size: 1.1rem;
            background: rgba(0, 0, 0, 0.5);
            padding: 8px 15px;
            border-radius: 20px;
            max-width: 80%;
            margin: 15px auto 0;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .showcase-grid,
            .cert-grid {
                gap: 25px;
            }
            
            .showcase-image {
                height: 240px;
            }
            
            .cert-img-container {
                height: 260px;
            }
        }
        
        @media (max-width: 992px) {
            .client-showcase-section,
            .certifications-section {
                padding: 60px 15px;
            }
            
            .showcase-title,
            .cert-title {
                font-size: 1.8rem;
            }
            
            .showcase-subtitle,
            .cert-subtitle {
                font-size: 1rem;
            }
            
            .showcase-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .cert-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .showcase-image {
                height: 220px;
            }
            
            .cert-img-container {
                height: 240px;
            }
        }
        
        @media (max-width: 768px) {
            .client-showcase-section,
            .certifications-section {
                padding: 50px 10px;
            }
            
            .showcase-header,
            .cert-header {
                margin-bottom: 30px;
            }
            
            .showcase-title,
            .cert-title {
                font-size: 1.6rem;
            }
            
            .showcase-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            
            .cert-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            
            .showcase-image {
                height: 260px;
            }
            
            .cert-img-container {
                height: 280px;
            }
            
            .cert-label {
                font-size: 1rem;
            }
        }
        
        @media (max-width: 576px) {
            .showcase-image {
                height: 200px;
            }
            
            .cert-img-container {
                height: 240px;
            }
            
            .cert-label {
                font-size: 0.95rem;
            }
            
            .image-viewer-container {
                max-width: 95%;
            }
            
            .image-viewer-title {
                font-size: 0.9rem;
                max-width: 95%;
            }
        }