/* === 基础样式 === */
         * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }

        :root {
            --primary-color: #1a365d;
            --secondary-color: #c53030;
            --accent-color: #675949;
            --light-color: #f7fafc;
            --dark-color: #2d3748;
            --gray-color: #718096;
            /* --transition: all 0.3s ease; */
        }
        
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background-color: var(--light);
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .header-container{
            margin: 40px auto;
        }
        h2.section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 1rem;
            color: var(--primary-color);
            padding-bottom: 15px;
        }
        .imagese{
            width: 100%;
            height: 100%;
        }
        /* h2.section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--secondary-color);
        } */
        
        p.section-subtitle {
            text-align: center;
            font-size: 1.2rem;
            color: var(--gray-color);
            margin-bottom: 3rem;
        }
        
        /* 导航栏 */
        header {
            background-color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1rem 0;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
        }
        
        .logo span {
            color: var(--secondary-color);
        }
        .logo {
            position: relative; /* 建立定位上下文 */
            display: flex;
            align-items: center; /* 垂直居中 */
        }

        .logo span {
            display: inline-block;
            margin-left: 10px; /* 文字和图片间距 */
        }

        .logo img {
            height: 50px; /* 图片高度 */
            width: auto; /* 保持原始宽高比 */
            vertical-align: middle; /* 图片垂直居中 */
            /* filter: drop-shadow(1px 1px 1px rgba(0,0,0,0.1)); 增加微阴影增强立体感 */
        }
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 2rem;
        }
        
        .nav-links a {
            text-decoration: none;
            color: var(--dark-color);
            font-weight: 600;
            transition: var(--transition);
            position: relative;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--secondary-color);
            transition: var(--transition);
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .nav-links a:hover {
            color: var(--secondary-color);
        }
        
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* === 轮播图样式 === */
        .slider-container {
            position: relative;
            width: 100%;
            overflow: hidden;
            margin-top: 70px;
        }
        
        .slider {
            display: flex;
            transition: transform 0.5s ease-in-out;
            height: 700px;
        }
        
        .slide {
            min-width: 100%;
            height: 100%;
        }
        
        .slide img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        
        .slider-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(0, 0, 0, 0.3);
            color: white;
            border: none;
            font-size: 2rem;
            cursor: pointer;
            padding: 10px 15px;
            transition: var(--transition);
            z-index: 10;
        }
        
        .slider-arrow:hover {
            background: rgba(0, 0, 0, 0.7);
        }
        
        .slider-prev {
            left: 20px;
        }
        
        .slider-next {
            right: 20px;
        }
        
        .slider-dots {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
        }
        /* 轮播图容器 - 使用宽高比控制 */
        .slider-container {
            position: relative;
            width: 100%;
            padding-top: 56.25%; /* 16:9宽高比 */
            overflow: hidden;
            margin-top: 70px;
        }

        .slider {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            transition: transform 0.5s ease-in-out;
        }

        .slide {
            min-width: 100%;
            height: 100%;
            position: relative;
        }

        .slide img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover; /* 保持比例并填充容器 */
            display: block;
        }
        
        /* === 产品展示区域 === */
        .category-filters {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 15px;
            margin-bottom: 3rem;
        }
        
        .filter-btn {
            padding: 10px 20px;
            background: white;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .filter-btn.active, .filter-btn:hover {
            background: var(--primary-color);
            color: white;
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            width: 100%;
            max-width: 350px;
            display: flex;
            flex-direction: column;
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 20px rgba(0, 0, 0, 0.15);
        }
        
        .product-image {
            height: 350px;
            position: relative;
            overflow: hidden;
            /* background: linear-gradient(135deg, var(--primary-color), var(--secondary-color)); */
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .product-card:hover .product-image img {
            transform: scale(1.05);
        }
        
        .product-badge {
            position: absolute;
            /* top: 15px;
            right: 15px; */
            padding: 5px 12px;
            /* border-radius: 20px; */
            font-size: 0.8rem;
            font-weight: 600;
            color: white;
            /* background: #f6ad55; */
        }
        
        .product-info {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        
        .product-series {
            font-size: 0.9rem;
            color: #718096;
            margin-bottom: 5px;
        }
        
        .product-title {
            font-size: 1.1rem;
            margin-bottom: 10px;
            color: #1a365d;
        }
        
        .product-price {
            font-size: 1.4rem;
            font-weight: 700;
            color: #c53030;
            margin-bottom: 10px;
        }
        
        .product-description {
            color: #718096;
            margin-bottom: 15px;
            flex: 1;
        }
        
        .features {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 15px;
        }
        
        .feature {
            background: #edf2f7;
            padding: 5px 10px;
            border-radius: 5px;
            font-size: 0.8rem;
        }
        
        .product-actions {
            display: flex;
            gap: 10px;
            margin-top: auto;
        }
        
        .action-btn {
            flex: 1;
            padding: 10px 15px;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 5px;
        }
        
        .details-btn {
            background: white;
            color: #1a365d;
            border: 2px solid #1a365d;
        }
        
        .details-btn:hover {
            background: #1a365d;
            color: white;
        }
        
        .cart-btn {
            background: #c53030;
            color: white;
        }
        
        .cart-btn:hover {
            background: #b91c1c;
        }
        
        .cart-btn.added {
            background: #38a169;
            cursor: default;
        }
        
        /* 模态框样式 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.7);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }
        
        .modal-content {
            background-color: white;
            border-radius: 10px;
            width: 90%;
            max-width: 800px;
            max-height: 90vh;
            overflow-y: auto;
            padding: 30px;
            position: relative;
        }
        
        .close-modal {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--gray-color);
            transition: var(--transition);
        }
        
        .close-modal:hover {
            color: var(--secondary-color);
        }
        
        .modal-header {
            margin-bottom: 20px;
        }
        
        .modal-title {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 5px;
        }
        
        .modal-price {
            font-size: 1.5rem;
            color: var(--secondary-color);
            font-weight: 700;
        }
        
        .modal-body {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
        }
        
        .modal-image {
            flex: 1;
            min-width: 300px;
            height: 300px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            display: flex;
            justify-content: center;
            align-items: center;
            border-radius: 10px;
            overflow: hidden;
        }
        
        .modal-image i {
            font-size: 6rem;
            color: rgba(255, 255, 255, 0.8);
        }
        
        .modal-details {
            flex: 1;
            min-width: 300px;
        }
        
        .modal-description {
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        .modal-features {
            margin-bottom: 20px;
        }
        
        .modal-features h3 {
            margin-bottom: 10px;
            color: var(--primary-color);
        }
        
        .modal-actions {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .modal-btn {
            padding: 12px 25px;
            border: none;
            border-radius: 5px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .modal-details-btn {
            background: var(--primary-color);
            color: white;
        }
        
        .modal-details-btn:hover {
            background: #0c203a;
        }
        
        .modal-cart-btn {
            background: var(--secondary-color);
            color: white;
        }
        
        .modal-cart-btn:hover {
            background: #b91c1c;
        }
        
        /* 购物车样式 */
        .cart-notification {
            position: fixed;
            top: 100px;
            right: 20px;
            background-color: var(--secondary-color);
            color: white;
            padding: 15px 25px;
            border-radius: 5px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            z-index: 1500;
            transform: translateX(150%);
            transition: transform 0.5s ease;
        }
        
        .cart-notification.show {
            transform: translateX(0);
        }
        
        /* === 关于我们区域 === */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text p {
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .feature-list {
            margin: 30px 0;
        }
        
        .feature-item {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .feature-icon {
            font-size: 2rem;
            width: 60px;
            height: 60px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
        }
        
        .feature-text h4 {
            font-size: 1.2rem;
            margin-bottom: 5px;
            color: var(--primary-color);
        }
        
        /* === 服务区域 === */
        .services {
            background: #f8fafc;
        }
        
        .services-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .service-card {
            background: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            transition: var(--transition);
        }
        
        .service-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .service-icon {
            width: 70px;
            height: 70px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 20px;
        }
        
        .service-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--primary-color);
        }
        
        .service-card p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }
        
        .service-link {
            display: inline-block;
            color: var(--secondary-color);
            font-weight: 600;
            text-decoration: none;
            position: relative;
        }
        
        .service-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--secondary-color);
            transform: scaleX(0);
            transform-origin: right;
            transition: transform 0.3s ease;
        }
        
        .service-link:hover::after {
            transform: scaleX(1);
            transform-origin: left;
        }
        
        /* === 联系方式区域 === */
        .bottom {
            background: var(--primary-color);
            color: white;
            padding: 4rem 0 0;
        }
        
        .contact {
            display: flex;
            justify-content: space-between;
            gap: 50px;
        }
        
        .contactleft {
            flex: 1;
        }
        
        .contactleft h2 {
            font-size: 1.8rem;
            margin-bottom: 20px;
        }
        
        .contactleft p {
            margin-bottom: 10px;
            line-height: 1.8;
        }
        
        .contactleft a {
            color: #fff;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .contactleft a:hover {
            text-decoration: underline;
        }
        
        .contactright {
            flex: 0 0 150px;
            text-align: center;
        }
        
        .qr-code {
            width: 150px;
            height: 150px;
            background: white;
            padding: 10px;
            border-radius: 10px;
        }
        
        /* === 页脚样式 === */
        .footer {
            background: #0c203a;
            color: rgba(255, 255, 255, 0.7);
            text-align: center;
            padding: 1.5rem 0;
            font-size: 0.9rem;
        }
        
        .footer p {
            margin-bottom: 5px;
        }
        
        /* === 响应式设计 === */
        @media (max-width: 992px) {
            .products-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .slider {
                height: 400px;
            }
            
            .about-content {
                flex-direction: column;
            }
            
            .contact {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            
            .contactright {
                margin-top: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .menu-toggle {
                display: block;
            }
            
            .nav-links {
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                align-items: center;
                padding: 20px 0;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
                transition: clip-path 0.4s ease;
            }
            
            .nav-active .nav-links {
                clip-path: polygon(0 0, 100% 0, 100% 100%, 0% 100%);
            }
            
            .nav-links li {
                margin: 10px 0;
            }
            
            .slider {
                height: 300px;
            }
            
            h2.section-title {
                font-size: 2rem;
            }
            
            .slider-arrow {
                font-size: 1.5rem;
                padding: 8px 12px;
            }
            
            .modal-body {
                flex-direction: column;
            }
        }
        
        @media (max-width: 576px) {
            .products-grid {
                grid-template-columns: 1fr;
            }
            
            .slider {
                height: 250px;
            }
            
            .filter-btn {
                padding: 8px 15px;
                font-size: 0.9rem;
            }
            
            .slider-arrow {
                font-size: 1.2rem;
                padding: 5px 10px;
            }
            
            .product-actions {
                flex-direction: column;
            }
            
            .services-container {
                grid-template-columns: 1fr;
            }
            
            .modal-actions {
                flex-direction: column;
            }
        }
                /* ====== 响应式设计 - 媒体查询 ====== */
    @media screen and (max-width: 1200px) {
        /* 中等屏幕适配 */
        .slider {
            height: 600px;
        }
        
        .container {
            padding: 0 30px;
        }
        
        .feature-box, .service-box {
            padding: 25px 20px;
        }
        
        .testimonials-container {
            max-width: 90%;
        }
    }

    @media screen and (max-width: 992px) {
        /* 平板设备适配 */
        .slider {
            height: 500px;
        }
        
        .products {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .features-container, 
        .services-container {
            grid-template-columns: repeat(2, 1fr);
        }
        
        .testimonial-text {
            font-size: 16px;
        }
        
        .contact {
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        
        .contactright {
            margin-top: 30px;
        }
        
        .section-title h2 {
            font-size: 28px;
        }
    }

    @media screen and (max-width: 768px) {
        /* 小尺寸平板适配 */
        .slider {
            height: 400px;
        }
        
    .nav-links {
        position: fixed;
        top: 70px;
        left: 0;
        background: white;
        width: 100%;
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        transform: translateY(-150%);
        transition: transform 0.4s ease-in-out;
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateY(0);
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .slider-arrow {
        padding: 8px 12px;
        font-size: 1.5rem;
    }
    
    .section-title {
        margin-bottom: 40px;
    }
    
    .content-section {
        padding: 60px 0;
    }
    
    .feature-box {
        padding: 20px 15px;
    }
    
    .feature-icon {
        font-size: 40px;
    }
    
    .testimonial-content {
        padding: 20px;
    }
}

@media screen and (max-width: 576px) {
    /* 手机设备适配 */
    .slider {
        height: 300px;
    }
    
    .products {
        grid-template-columns: 1fr;
    }
    
    .features-container, 
    .services-container {
        grid-template-columns: 1fr;
    }
    
    .logo {
        font-size: 1.5rem;
    }
    
    .section-title h2 {
        font-size: 24px;
    }
    
    .section-subtitle, 
    .section-title p {
        font-size: 16px;
    }
    
    .product-info h3 {
        font-size: 18px;
    }
    
    .testimonial-author {
        flex-direction: column;
        align-items: center;
    }
    
    .author-avatar {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .footer p {
        font-size: 12px;
    }
    
    .slider-dots {
        bottom: 10px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
    
    .content-section {
        padding: 50px 0;
    }
}

@media screen and (max-width: 400px) {
    /* 超小屏幕手机适配 */
    .slider {
        height: 250px;
    }
    
    .container {
        padding: 0 20px;
    }
    
    .slider-arrow {
        padding: 6px 10px;
        font-size: 1.2rem;
    }
    
    .section-title h2 {
        font-size: 22px;
    }
    
    .footer p {
        font-size: 10px;
    }
    }@media screen and (max-width: 768px) {
        .nav-links {
            position: fixed;
            top: 70px;
            left: 0;
            background: white;
            width: 100%;
            flex-direction: column;
            align-items: center;
            padding: 20px 0;
            box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            transform: translateY(-150%);
            transition: transform 0.4s ease-in-out;
            z-index: 999;
        }
        
        .nav-links.active {
            transform: translateY(0);
        }
        
        .nav-links li {
            margin: 15px 0;
        }
        
        .menu-toggle {
            display: block;
            font-size: 1.8rem;
            cursor: pointer;
        }
    }
    @media screen and (max-width: 768px) {
    .nav-links {
            position: fixed;
            top: 70px; /* 调整顶部位置，位于导航栏下方 */
            left: 0;
            background: white;
            width: 100%;
            flex-direction: column;
            align-items: center;
            padding: 20px 0;
            box-shadow: 0 5px 10px rgba(0,0,0,0.1);
            /* 初始状态：隐藏在屏幕上方 */
            transform: translateY(-100vh); 
            transition: transform 0.4s ease-in-out;
            z-index: 999;
        }
        
        .nav-links.active {
            /* 激活状态：显示在正常位置 */
            transform: translateY(0);
        }
        
        .nav-links li {
            margin: 15px 0;
            width: 100%;
            text-align: center;
        }
        
        .nav-links a {
            display: block;
            padding: 10px 0;
            width: 100%;
        }
        
        .menu-toggle {
            display: block;
            font-size: 1.8rem;
            cursor: pointer;
        }
    }