* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Microsoft YaHei', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
            overflow-x: hidden;
        }
        
        /* 响应式body内边距 */
        @media (min-width: 768px) {
            body {
                padding: 0;
            }
        }
        
        /* 统一容器样式 */
        .layout-container, 
        .modern-container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 横幅样式 */
        .banner {
            width: 100%;
            height: 400px;
            position: relative;
            overflow: hidden;
            background:  
                linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)),
                url('/image/横幅.webp') center/cover no-repeat;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 20px;
            margin: 0 auto 30px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        }
        
        .banner-content {
            max-width: 800px;
            padding: 0 20px;
            position: relative;
            z-index: 3;
        }
        
        .banner h1 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            text-shadow: 1px 1px 3px rgba(0,0,0,0.3);
        }
        
        .banner p {
            font-size: 1.2rem;
            margin-bottom: 25px;
            line-height: 1.6;
        }
        
        .banner-btn {
            display: inline-block;
            background-color: #f7931e;
            color: white;
            padding: 12px 30px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: bold;
            transition: all 0.3s ease;
            border: 2px solid #f7931e;
        }
        
        .banner-btn:hover {
            background-color: transparent;
            color: #f7931e;
        }
        
        .banner::after {
            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" width="100" height="100" viewBox="0 0 100 100" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="2"><path d="M0 0 L100 100 M100 0 L0 100"/></svg>');
            background-size: 80px 80px;
            opacity: 0.6;
            z-index: 2;
            pointer-events: none;
        }
        
        /* 分类导航 */
        .category-nav {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin: 2rem auto;
            padding: 2rem 1rem;
            background-color: #f5f5f5;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0,0,0,0.05);
            width: 100%;
            max-width: 1200px;
        }
        
        .category-nav-title {
            position: relative;
            font-size: 2rem;
            color: #2563eb;
            margin: 0 auto 3rem;
            padding: 20px 0;
            font-weight: 700;
            text-align: center;
            max-width: 800px;
            letter-spacing: -0.5px;
        }
        
        .category-nav-title:after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: linear-gradient(90deg, #2563eb, #3b82f6);
            border-radius: 4px;
        }
        
        .primary-menu {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
            padding: 1rem;
        }
        
        .primary-menu button {
            padding: 12px 24px;
            min-width: 140px;
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 500;
            color: #333;
            transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        
        .primary-menu button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 12px rgba(0,0,0,0.1);
            border-color: #bbdefb;
            background-color: #f8f9fa;
        }
        
        .primary-menu button.active {
            background-color: #2563eb;
            color: white;
            border-color: #2563eb;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.25);
            transform: translateY(-1px);
        }
        
        /* 关于我们 */
        :root {
            --primary: #2563eb;
            --primary-light: #3b82f6;
            --secondary: #f59e0b;
            --dark: #1e293b;
            --light: #f8fafc;
            --gray: #64748b;
        }
        
        .about-modern {
            padding: 5rem 1.5rem;
            background: linear-gradient(to bottom, #ffffff 0%, #f8fafc 100%);
            width: 100%;
        }
        
        .modern-header {
            text-align: center;
            margin-bottom: 3.5rem;
        }
        
        .modern-header .subtitle {
            display: inline-block;
            background-color: var(--primary-light);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 2rem;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 1rem;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .modern-header h2 {
            font-size: 2.5rem;
            color: var(--dark);
            margin-bottom: 1.5rem;
            font-weight: 700;
            line-height: 1.2;
        }
        
        .modern-header h2 span {
            color: var(--primary);
        }
        
        .modern-header p {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .modern-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }
        
        .modern-card {
            background: white;
            border-radius: 1rem;
            padding: 2rem;
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            border: 1px solid #e2e8f0;
        }
        
        .modern-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
        }
        
        .modern-card.problem {
            border-top: 4px solid #ef4444;
        }
        
        .modern-card.solution {
            border-top: 4px solid var(--primary);
        }
        
        .modern-card.advantage {
            border-top: 4px solid var(--secondary);
        }
        
        .card-icon {
            width: 3rem;
            height: 3rem;
            border-radius: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.5rem;
        }
        
        .problem .card-icon {
            background-color: #fee2e2;
            color: #dc2626;
        }
        
        .solution .card-icon {
            background-color: #dbeafe;
            color: var(--primary);
        }
        
        .advantage .card-icon {
            background-color: #fef3c7;
            color: #d97706;
        }
        
        .modern-card h3 {
            font-size: 1.5rem;
            color: var(--dark);
            margin-bottom: 1rem;
            font-weight: 600;
        }
        
        .modern-card ul {
            list-style: none;
        }
        
        .modern-card li {
            margin-bottom: 0.75rem;
            display: flex;
            align-items: flex-start;
            color: var(--gray);
            line-height: 1.6;
        }
        
        .modern-card li i {
            margin-right: 0.5rem;
            color: var(--primary);
            margin-top: 0.25rem;
            font-size: 0.8rem;
        }
        
        .modern-tagline {
            text-align: center;
            margin-top: 4rem;
            position: relative;
        }
        
        .modern-tagline p {
            display: inline-block;
            font-size: 1.25rem;
            color: var(--dark);
            font-weight: 600;
            padding: 1rem 2rem;
            background-color: white;
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            position: relative;
            z-index: 1;
        }
        
        .modern-tagline:before {
            content: "";
            position: absolute;
            top: 50%;
            left: 0;
            right: 0;
            height: 1px;
            background-color: #e2e8f0;
            z-index: 0;
        }
        
        /* 左右布局栏目 */
        .layout-section-title {
            text-align: center;
            margin: 40px 0;
            color: #2563eb;
            font-size: 36px;
            font-weight: bold;
            position: relative;
            padding-bottom: 15px;
        }
        
        .layout-section-title:after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: #2563eb;
        }
        
        .layout-content-section {
            display: flex;
            margin-bottom: 40px;
            background-color: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            width: 100%;
        }
        
        .layout-image-container {
            flex: 1;
            min-height: 300px;
            background-size: cover;
            background-position: center;
            transition: all 0.3s ease;
        }
        
        .layout-image-container:hover {
            transform: scale(1.02);
        }
        
        .layout-text-container {
            flex: 1;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .layout-text-container h2 {
            font-size: 28px;
            margin-bottom: 20px;
            color: #2c3e50;
        }
        
        .layout-text-container p {
            margin-bottom: 15px;
            font-size: 16px;
            color: #555;
        }
        
        .layout-read-more {
            display: inline-block;
            margin-top: 20px;
            padding: 10px 20px;
            background-color: #2563eb;
            color: white;
            text-decoration: none;
            border-radius: 4px;
            transition: background-color 0.3s;
        }
        
        .layout-read-more:hover {
            background-color: #1d4ed8;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .banner {
                height: 400px;
            }
            
            .banner h1 {
                font-size: 2.2rem;
            }
            
            .banner p {
                font-size: 1.1rem;
            }
            
            .primary-menu {
                gap: 8px;
                padding: 0 1rem;
            }
            
            .primary-menu button {
                min-width: 120px;
                padding: 8px 16px;
                font-size: 0.9rem;
            }
            
            .modern-header h2 {
                font-size: 2rem;
            }
            
            .layout-content-section {
                flex-direction: column;
                margin-bottom: 30px;
            }
            
            .layout-image-container {
                min-height: 200px;
                width: 100%;
                flex: none;
            }
            
            .layout-text-container {
                padding: 20px;
            }
            
            .layout-section-title {
                font-size: 28px;
                margin: 30px 0;
            }
        }
        
        @media (max-width: 480px) {
            .banner {
                height: 300px;
            }
            
            .banner h1 {
                font-size: 1.8rem;
            }
            
            .banner p {
                font-size: 1rem;
            }
            
            .primary-menu {
                gap: 6px;
            }
            
            .primary-menu button {
                min-width: 100px;
                padding: 6px 12px;
                font-size: 0.85rem;
            }
            
            .modern-cards {
                grid-template-columns: 1fr;
            }
            
            .category-nav-title {
                font-size: 1.5rem;
                margin-bottom: 2rem;
            }
        }
          .pc-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            font-family: Arial, sans-serif;
            
        }
        
        .pc-section-title {
            text-align: center;
            color: #2563eb;
            font-size: 32px;
            font-weight: bold;
            margin-bottom: 40px;
        }
        
        .pc-product-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        
        .pc-product-item {
            text-align: center;
            
        }
        
        .pc-product-link {
            text-decoration: none;
            color: inherit;
            display: block;
        }
        
        .pc-product-image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 8px;
            margin-bottom: 10px;
            transition: transform 0.3s ease;
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15); /* 阴影更大、更明显 */

        }
        
        .pc-product-image:hover {
            transform: scale(1.03);
        }
        
        .pc-product-title {
            font-size: 18px;
            font-weight: 600;
            margin-top: 8px;
        }
        
        @media (max-width: 768px) {
            .pc-product-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 480px) {
            .pc-product-grid {
                grid-template-columns: 1fr;
            }
        }