* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary: #4a6de5;
            --secondary: #ff6b6b;
            --dark: #2c3e50;
            --light: #f8f9fa;
            --gray: #e0e0e0;
            --success: #2ecc71;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        body {
            background-color: #f5f7fb;
            color: #333;
            line-height: 1.6;
            font-family: 'Roboto', sans-serif;
            overflow-x: hidden;
        }
        
        h1, h2, h3, h4 {
            font-family: 'Montserrat', sans-serif;
            font-weight: 600;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background: linear-gradient(135deg, #25252b 0%, #25252b 100%);
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: var(--shadow);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.8rem;
            font-weight: 700;
            color: white;
            text-decoration: none;
        }
        
        .logo i {
            margin-right: 10px;
            color: var(--secondary);
            font-size: 2.2rem;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 8px 12px;
            border-radius: 4px;
            font-size: 1.05rem;
        }
        
        nav ul li a:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        
        .header-actions {
            display: flex;
            align-items: center;
        }
        
        .search-box {
            position: relative;
            margin-right: 20px;
        }
        
        .search-box input {
            padding: 12px 15px 12px 45px;
            border: none;
            border-radius: 30px;
            width: 250px;
            font-size: 0.95rem;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }
        
        .search-box i {
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--dark);
        }
        
        .cart-icon {
            position: relative;
            font-size: 1.4rem;
            color: white;
            cursor: pointer;
            padding: 8px 15px;
            border-radius: 30px;
            transition: var(--transition);
        }
        
        .cart-icon:hover {
            background: rgba(255, 255, 255, 0.15);
        }
        
        .cart-count {
            position: absolute;
            top: -5px;
            right: 5px;
            background: var(--secondary);
            color: white;
            font-size: 0.7rem;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
        }
        

        
        .hero-content {
            max-width: 800px;
            margin: 0 auto;
            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: 1.2rem;
            max-width: 700px;
            margin: 0 auto 40px;
            opacity: 0.9;
            font-weight: 300;
        }
        
        .cta-button {
            display: inline-block;
            background: var(--secondary);
            color: white;
            padding: 16px 45px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
            border: none;
            cursor: pointer;
            font-family: 'Montserrat', sans-serif;
        }
        
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 107, 107, 0.6);
            background: #ff5252;
        }
        
        .cta-button i {
            margin-left: 8px;
        }
        
        /* 产品区域 */
        .section-title {
            text-align: center;
            margin: 40px 0 60px;
            color: var(--dark);
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
        }
        
        .section-title:after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
        }
        
        .products {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 80px;
        }
        
        .product-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            animation: fadeIn 0.6s ease-out;
            animation-fill-mode: backwards;
        }
        
        .product-card:nth-child(1) { animation-delay: 0.1s; }
        .product-card:nth-child(2) { animation-delay: 0.2s; }
        .product-card:nth-child(3) { animation-delay: 0.3s; }
        .product-card:nth-child(4) { animation-delay: 0.4s; }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
        }
        
        .product-tag {
            position: absolute;
            top: 15px;
            left: 15px;
            background: var(--secondary);
            color: white;
            padding: 6px 15px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            z-index: 2;
        }
        
        .product-image {
            height: 220px;
            overflow: hidden;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #f8fafd;
            position: relative;
        }
        
        .product-image img {
            max-width: 80%;
            max-height: 80%;
            transition: transform 0.5s ease;
        }
        
        .product-card:hover .product-image img {
            transform: scale(1.05);
        }
        
        .product-info {
            padding: 22px;
        }
        
        .product-category {
            color: #777;
            font-size: 0.9rem;
            margin-bottom: 5px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        
        .product-name {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--dark);
            min-height: 60px;
        }
        
        .product-description {
            color: #666;
            font-size: 0.95rem;
            margin-bottom: 15px;
            height: 70px;
            overflow: hidden;
            line-height: 1.7;
        }
        
        .product-rating {
            color: #ffc107;
            margin-bottom: 15px;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
        }
        
        .product-rating span {
            color: #777;
            margin-left: 8px;
            font-size: 0.95rem;
        }
        
        .product-price {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .current-price {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
        }
        
        .original-price {
            color: #999;
            text-decoration: line-through;
            margin-left: 10px;
            font-size: 1.1rem;
        }
        
        .product-actions {
            display: flex;
            gap: 12px;
        }
        
        .buy-button, .download-button {
            flex: 1;
            padding: 14px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 0.95rem;
        }
        
        .buy-button {
            background: var(--primary);
            color: white;
        }
        
        .download-button {
            background: var(--success);
            color: white;
        }
        
        .buy-button:hover {
            background: #3a5cd4;
            transform: translateY(-2px);
        }
        
        .download-button:hover {
            background: #27ae60;
            transform: translateY(-2px);
        }
        
        /* 产品详情模态框 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.85);
            z-index: 1000;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .modal-content {
            background: white;
            border-radius: 12px;
            max-width: 1000px;
            width: 100%;
            max-height: 90vh;
            overflow-y: auto;
            position: relative;
            animation: modalOpen 0.4s ease;
            box-shadow: 0 20px 50px rgba(0,0,0,0.3);
        }
        
        @keyframes modalOpen {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .close-modal {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 1.8rem;
            color: #777;
            cursor: pointer;
            background: none;
            border: none;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
            z-index: 10;
        }
        
        .close-modal:hover {
            background: #f0f0f0;
            color: #333;
        }
        
        .modal-body {
            display: flex;
            padding: 40px;
        }
        
        .modal-image {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            background: #f8fafd;
            border-radius: 8px;
            padding: 20px;
            position: relative;
        }
        
        .main-image {
            width: 100%;
            height: 350px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        
        .main-image img {
            max-width: 90%;
            max-height: 90%;
            object-fit: contain;
        }
        
        .thumbnail-container {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .thumbnail {
            width: 70px;
            height: 70px;
            border-radius: 8px;
            overflow: hidden;
            cursor: pointer;
            border: 2px solid transparent;
            transition: var(--transition);
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .thumbnail img {
            max-width: 90%;
            max-height: 90%;
        }
        
        .thumbnail.active, .thumbnail:hover {
            border-color: var(--primary);
        }
        
        .modal-details {
            flex: 1;
            padding: 0 40px;
        }
        
        .modal-title {
            font-size: 2rem;
            color: var(--dark);
            margin-bottom: 15px;
            line-height: 1.3;
        }
        
        .modal-price {
            font-size: 1.8rem;
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 20px;
        }
        
        .modal-description {
            color: #555;
            margin-bottom: 30px;
            line-height: 1.8;
            font-size: 1.05rem;
        }
        
        .features {
            margin-bottom: 30px;
            background: #f8fafd;
            padding: 20px;
            border-radius: 8px;
        }
        
        .features h3 {
            margin-bottom: 20px;
            color: var(--dark);
            font-size: 1.3rem;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--gray);
        }
        
        .features ul {
            list-style: none;
            columns: 2;
            column-gap: 30px;
        }
        
        .features ul li {
            padding: 10px 0;
            display: flex;
            align-items: center;
            break-inside: avoid;
        }
        
        .features ul li:before {
            content: "✓";
            color: var(--success);
            margin-right: 12px;
            font-weight: bold;
            font-size: 1.1rem;
        }
        
        .modal-actions {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .modal-buy-button, .modal-download-button {
            padding: 17px 25px;
            border: none;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.05rem;
            font-family: 'Montserrat', sans-serif;
        }
        
        .modal-buy-button {
            background: var(--primary);
            color: white;
            flex: 2;
        }
        
        .modal-download-button {
            background: var(--success);
            color: white;
            flex: 1;
        }
        
        .modal-buy-button:hover {
            background: #3a5cd4;
            transform: translateY(-2px);
        }
        
        .modal-download-button:hover {
            background: #27ae60;
            transform: translateY(-2px);
        }
        
        /* 页脚 */
        footer {
            background:#25252b;
            color: white;
            padding: 80px 0 40px;
            margin-top: 60px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.4rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 15px;
        }
        
        .footer-column h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 15px;
        }
        
        .footer-links a {
            color: #bbb;
            text-decoration: none;
            transition: var(--transition);
            font-size: 1.05rem;
        }
        
        .footer-links a:hover {
            color: white;
            margin-left: 5px;
        }
        
        .contact-info {
            list-style: none;
        }
        
        .contact-info li {
            display: flex;
            margin-bottom: 18px;
            align-items: flex-start;
        }
        
        .contact-info i {
            margin-right: 15px;
            color: var(--primary);
            font-size: 1.2rem;
            min-width: 25px;
            margin-top: 4px;
        }
        
        .social-icons {
            display: flex;
            gap: 15px;
            margin-top: 25px;
        }
        
        .social-icons a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 45px;
            height: 45px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            color: white;
            transition: var(--transition);
            font-size: 1.2rem;
        }
        
        .social-icons a:hover {
            background: var(--primary);
            transform: translateY(-5px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #999;
            font-size: 0.95rem;
        }
        
        /* 动画 */
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(40px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .modal-body {
                flex-direction: column;
            }
            
            .modal-image {
                margin-bottom: 30px;
            }
            
            .modal-details {
                padding: 0;
            }
            
            .features ul {
                columns: 1;
            }
        }
        
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 20px;
            }
            
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            nav ul li {
                margin: 5px 10px;
            }
            
            .search-box input {
                width: 200px;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero p {
                font-size: 1rem;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
        }
        
        @media (max-width: 576px) {
            .products {
                grid-template-columns: 1fr;
            }
            
            .product-actions {
                flex-direction: column;
            }
            
            .modal-actions {
                flex-direction: column;
            }
            
            .search-box {
                width: 100%;
                margin: 0 0 15px 0;
            }
            
            .search-box input {
                width: 100%;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }