body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    }
    .product-image {
      max-width: 100%;
      height: auto;
      border-radius: 6px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    .info-card {
      background-color: #fff;
      border-radius: 8px;
      padding: 20px;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      margin-bottom: 20px;
    }
    .cta-box {
      background: #fff8e6;
      padding: 20px;
      border-radius: 8px;
      margin-top: 20px;
      text-align: center;
    }
    .trust-tips {
      display: flex;
      justify-content: space-around;
      flex-wrap: wrap;
      margin-top: 15px;
      font-size: 0.9rem;
      color: #555;
    }
    .breadcrumb {
      background: none;
      padding: 0;
      margin: 15px 0;
    }
    .wechat-info {
      display: none;
      margin-top: 15px;
      font-size: 1.1rem;
      font-weight: 500;
    }
    .highlight {
      background-color: #f9f9f9;
      padding: 12px;
      border-left: 4px solid #FFA500;
      margin: 15px 0;
      line-height: 1.6;
      border-radius: 0 4px 4px 0;
    }
    
    /* ===== 相关产品/互换型号区域美化 ===== */
    .related-title {
      background: linear-gradient(to right, #f8f9fa, #e9ecef);
      padding: 14px 20px;
      margin-bottom: 20px;
      border-radius: 8px;
      font-weight: 600;
      color: #333;
      box-shadow: 0 1px 3px rgba(0,0,0,0.08);
      border-left: 4px solid #17a2b8;
    }

    .related-content ul,
    .related-content ol {
      padding-left: 1.5rem;
    }

    .related-content table {
      width: 100%;
      margin-top: 10px;
      border-collapse: collapse;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      border-radius: 6px;
      overflow: hidden;
    }

    .related-content th,
    .related-content td {
      padding: 12px 15px;
      text-align: left;
      border-bottom: 1px solid #eee;
    }

    .related-content th {
      background-color: #f1f8ff;
      font-weight: 600;
      color: #17a2b8;
    }

    .related-content tr:hover {
      background-color: #f9f9f9;
    }

    /* 分页美化 */
    .related-content .pagination {
      justify-content: center;
      margin-top: 20px;
    }

    .related-content .pagination li {
      margin: 0 4px;
    }

    .related-content .pagination .page-link {
      color: #17a2b8;
      border: 1px solid #ddd;
      border-radius: 5px;
      padding: 6px 12px;
      transition: all 0.2s ease;
    }

    .related-content .pagination .page-item.active .page-link {
      background-color: #17a2b8;
      border-color: #17a2b8;
      color: white;
    }

    .related-content .pagination .page-link:hover {
      background-color: #e9f7fb;
      color: #0d7a99;
    }

    .related-content ul.list-unstyled li {
      padding: 8px 0;
      border-bottom: 1px dashed #eee;
      transition: color 0.2s;
    }

    .related-content ul.list-unstyled li:hover {
      color: #17a2b8;
      cursor: pointer;
    }

    .related-content ul.list-unstyled li:last-child {
      border-bottom: none;
    }

    /* ========== 优化后的轮播样式 ========== */
    #loginBannerCarousel {
      margin: 1.5rem auto 2rem auto;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 6px rgba(0,0,0,0.05);
      background: #f8f9fa;
      height: auto;
      min-height: 180px;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .banner-slide {
      text-align: center;
      padding: 1.2rem;
      max-width: 700px;
      width: 100%;
    }

    .banner-slide .banner-icon i {
      color: #17a2b8;
      font-size: 2.5rem;
      margin-bottom: 0.8rem;
    }

    .banner-slide h3 {
      font-weight: 600;
      color: #333;
      margin-bottom: 0.5rem;
      font-size: 1.3rem;
    }

    .banner-slide p {
      color: #555;
      font-size: 1rem;
      line-height: 1.5;
    }

    /* 轮播控制按钮 */
    .carousel-control-prev,
    .carousel-control-next {
      width: 5%;
      opacity: 0.6;
    }

    .carousel-control-prev:hover,
    .carousel-control-next:hover {
      opacity: 1;
    }

    .carousel-control-prev-icon,
    .carousel-control-next-icon {
      background-color: #17a2b8;
      border-radius: 50%;
      width: 28px;
      height: 28px;
      background-size: 10px 10px;
    }

    /* 指示器 */
    .carousel-indicators {
      bottom: 10px;
    }

    .carousel-indicators li {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background-color: #ccc;
      border: none;
      margin: 0 3px;
    }

    .carousel-indicators .active {
      background-color: #17a2b8;
    }

    @media (max-width: 768px) {
      #loginBannerCarousel {
        min-height: 160px;
      }
      .banner-slide h3 {
        font-size: 1.15rem;
      }
      .banner-slide p {
        font-size: 0.95rem;
        padding: 0 0.8rem;
      }
      .carousel-control-prev,
      .carousel-control-next {
        width: 8%;
      }
    }
 
        /* 基础样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            line-height: 1.6;
            color: #333;
            background-color: #fff;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        ul {
            list-style: none;
        }
        
        img {
            max-width: 100%;
            height: auto;
        }
        
        .container {
            width: 100%;
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background-color: #0066cc;
            color: white;
            border: none;
            border-radius: 4px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .btn:hover {
            background-color: #0052a3;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: #0066cc;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: #0066cc;
        }
        
        .section-title p {
            font-size: 1.2rem;
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }
        
        /* 头部导航 - 增强版 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: #0066cc;
            transition: all 0.3s ease;
        }
        
        .logo:hover {
            transform: scale(1.05);
        }
        
        .logo span {
            color: #333;
        }
        
        .nav-menu {
            display: flex;
        }
        
        .nav-menu > li {
            margin-left: 30px;
            position: relative;
        }
        
        .nav-menu > li > a {
            font-weight: 600;
            transition: color 0.3s;
            padding: 10px 0;
            display: block;
        }
        
        .nav-menu > li > a:hover {
            color: #0066cc;
        }
        
        /* 下拉菜单 */
        .dropdown {
            position: relative;
        }
        
        .dropdown-content {
            position: absolute;
            top: 100%;
            left: 0;
            background-color: white;
            min-width: 200px;
            box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
            border-radius: 4px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.3s ease;
            z-index: 100;
        }
        
        .dropdown:hover .dropdown-content {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        
        .dropdown-content li a {
            display: block;
            padding: 10px 15px;
            color: #333;
            transition: all 0.3s;
        }
        
        .dropdown-content li a:hover {
            background-color: #f5f5f5;
            color: #0066cc;
            padding-left: 20px;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* 英雄区域 - 轮播效果 */
        .hero {
            position: relative;
            height: 600px;
            overflow: hidden;
        }
        
        .hero-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-size: cover;
            background-position: center;
            opacity: 0;
            transition: opacity 1s ease-in-out;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: white;
        }
        
        .hero-slide.active {
            opacity: 1;
        }
        
        .hero-slide::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(rgba(0, 102, 204, 0.5), rgba(0, 102, 204, 0.7));
        }
        
        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            padding: 0 20px;
            animation: fadeInUp 1s ease-out;
        }
        
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 30px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
        }
        
        .hero-indicators {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            z-index: 2;
        }
        
        .hero-indicator {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.5);
            margin: 0 5px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .hero-indicator.active {
            background-color: white;
            transform: scale(1.2);
        }
        
        /* 产品展示 - 添加动画 */
        .products {
            padding: 100px 0;
            background-color: #fff;
        }
        
        .product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .product-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
            transform: translateY(20px);
            opacity: 0;
            animation: fadeInUp 0.5s forwards;
        }
        
        .product-card:nth-child(1) { animation-delay: 0.1s; }
        .product-card:nth-child(2) { animation-delay: 0.3s; }
        .product-card:nth-child(3) { animation-delay: 0.5s; }
        
        .product-card:hover {
            transform: translateY(-10px) !important;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        
        .product-img {
            height: 360px;
            overflow: hidden;
        }
        
        .product-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .product-card:hover .product-img img {
            transform: scale(1.1);
        }
        
        .product-info {
            padding: 20px;
        }
        
        .product-info h3 {
            font-size: 1.4rem;
            margin-bottom: 10px;
            color: #0066cc;
        }
        
        .product-info p {
            color: #666;
            margin-bottom: 15px;
        }
        
        /* 关于我们 - 添加动画 */
        .about {
            padding: 100px 0;
            background-color: #f8f9fa;
        }
        
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-text {
            flex: 1;
            opacity: 0;
            transform: translateX(-50px);
            animation: fadeInRight 0.8s forwards;
        }
        
        .about-text h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: #0066cc;
        }
        
        .about-text p {
            margin-bottom: 20px;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        
        .about-image {
            flex: 1;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            opacity: 0;
            transform: translateX(50px);
            animation: fadeInLeft 0.8s forwards;
        }
        
        .about-image img {
            transition: transform 0.5s;
        }
        
        .about-image:hover img {
            transform: scale(1.05);
        }
        
        /* 优势特点 - 添加悬停效果 */
        .features {
            padding: 100px 0;
            background-color: #fff;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .feature-card {
            text-align: center;
            padding: 40px 20px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            transform: translateY(0);
            opacity: 0;
            animation: fadeInUp 0.5s forwards;
        }
        
        .feature-card:nth-child(1) { animation-delay: 0.2s; }
        .feature-card:nth-child(2) { animation-delay: 0.4s; }
        .feature-card:nth-child(3) { animation-delay: 0.6s; }
        .feature-card:nth-child(4) { animation-delay: 0.8s; }
        
        .feature-card:hover {
            transform: translateY(-10px) !important;
            box-shadow: 0 15px 30px rgba(0, 102, 204, 0.1);
        }
        
        .feature-icon {
            font-size: 3rem;
            color: #0066cc;
            margin-bottom: 20px;
            transition: all 0.3s;
        }
        
        .feature-card:hover .feature-icon {
            transform: scale(1.2);
        }
        
        .feature-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: #333;
        }
        
        /* 新闻动态 - 卡片效果 */
        .news {
            padding: 100px 0;
            background-color: #f8f9fa;
        }
        
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .news-card {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            transform: translateY(0);
            opacity: 0;
            animation: fadeInUp 0.5s forwards;
        }
        
        .news-card:nth-child(1) { animation-delay: 0.2s; }
        .news-card:nth-child(2) { animation-delay: 0.4s; }
        .news-card:nth-child(3) { animation-delay: 0.6s; }
        
        .news-card:hover {
            transform: translateY(-10px) !important;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }
        
        .news-img {
            height: 200px;
            overflow: hidden;
        }
        
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .news-card:hover .news-img img {
            transform: scale(1.1);
        }
        
        .news-info {
            padding: 20px;
        }
        
        .news-date {
            color: #0066cc;
            font-weight: 600;
            margin-bottom: 10px;
            display: block;
        }
        
        .news-info h3 {
            font-size: 1.3rem;
            margin-bottom: 10px;
            color: #333;
        }
        
        /* 联系表单 - 交互效果 */
        .contact {
            padding: 100px 0;
            background-color: #fff;
        }
        
        .contact-form {
            max-width: 600px;
            margin: 50px auto 0;
            background: white;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transform: translateY(20px);
            opacity: 0;
            animation: fadeInUp 0.8s forwards;
        }
        
        .form-group {
            margin-bottom: 20px;
            position: relative;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 1rem;
            transition: all 0.3s;
        }
        
        .form-control:focus {
            border-color: #0066cc;
            box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
            outline: none;
        }
        
        textarea.form-control {
            min-height: 150px;
            resize: vertical;
        }
        
        /* 页脚 - 增强效果 */
        footer {
            background-color: #1a1a1a;
            color: white;
            padding: 70px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 2px;
            background-color: #0066cc;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
            transition: all 0.3s;
        }
        
        .footer-column ul li:hover {
            transform: translateX(5px);
        }
        
        .footer-column ul li a:hover {
            color: #0066cc;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            transition: all 0.3s;
        }
        
        .social-links a:hover {
            background-color: #0066cc;
            transform: translateY(-3px);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
        }
        
        /* 动画定义 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeInRight {
            from {
                opacity: 0;
                transform: translateX(-50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }
        
        @keyframes fadeInLeft {
            from {
                opacity: 0;
                transform: translateX(50px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 1024px) {
            .about-content {
                flex-direction: column;
            }
            
            .about-image {
                order: -1;
            }
            
            .hero h1 {
                font-size: 2.8rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-menu {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background-color: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .nav-menu li {
                margin: 10px 0;
            }
            
            .dropdown-content {
                position: static;
                opacity: 1;
                visibility: visible;
                transform: none;
                box-shadow: none;
                display: none;
            }
            
            .dropdown:hover .dropdown-content {
                display: block;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1.1rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .hero {
                height: 500px;
            }
        }
        
        @media (max-width: 480px) {
            .hero {
                height: 450px;
                padding: 80px 0;
            }
            
            .hero h1 {
                font-size: 2rem;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .product-grid, .feature-grid, .news-grid {
                grid-template-columns: 1fr;
            }
            
            .contact-form {
                padding: 20px;
            }
        }