/* 全局样式 */
        :root {
            --primary: #FF6B35;
            --primary-light: #FF8C5A;
            --primary-dark: #E04B11;
            --secondary: #2A5CFF;
            --dark: #333333;
            --light: #F8F9FA;
            --gray: #6C757D;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            color: var(--dark);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        h1, h2, h3 {
            font-weight: 700;
            line-height: 1.2;
        }
        
        a {
            text-decoration: none;
            color: inherit;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.4);
        }
        
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.6);
        }
        
        .btn-outline {
            border: 2px solid var(--primary);
            color: var(--primary);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
        }
        
        section {
            padding: 100px 0;
            position: relative;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark);
            display: inline-block;
            position: relative;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 60%;
            height: 4px;
            background: var(--primary);
            bottom: -10px;
            left: 20%;
            border-radius: 2px;
        }
        
        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 20px 0;
            z-index: 1000;
            transition: all 0.3s ease;
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        header.scrolled {
            padding: 15px 0;
            background: rgba(255, 255, 255, 0.98);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 40px;
            margin-right: 10px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            font-weight: 600;
            position: relative;
            padding: 5px 0;
        }
        
        .nav-links a:after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            background: var(--primary);
            bottom: 0;
            left: 0;
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover:after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* Banner区 */
        #banner {
            height: 100vh;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, rgba(255,107,53,0.1) 0%, rgba(255,255,255,1) 100%);
            position: relative;
            overflow: hidden;
        }
        
        .banner-content {
            text-align: center;
            width: 100%;
            position: relative;
            z-index: 2;
        }
        
        .banner-content h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--dark);
        }
        
        .banner-content p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto 40px;
            color: var(--gray);
        }
        
        .banner-btns {
            display: flex;
            justify-content: center;
            gap: 20px;
        }
        
        .banner-btns .btn {
            min-width: 180px;
        }
        
        .banner-particles {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 1;
            opacity: 0.3;
        }
        
        .scroll-down {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            animation: bounce 2s infinite;
        }
        
        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% {
                transform: translateY(0) translateX(-50%);
            }
            40% {
                transform: translateY(-20px) translateX(-50%);
            }
            60% {
                transform: translateY(-10px) translateX(-50%);
            }
        }
        
        /* 产品展示区 */
        .product {
            display: flex;
            align-items: center;
            min-height: 100vh;
            padding: 100px 0;
        }
        
        .product:nth-child(even) {
            background: rgba(255,107,53,0.03);
        }
        
        .product-content {
            flex: 1;
            padding-right: 50px;
        }
        
        .product-image {
            flex: 1;
            text-align: center;
            position: relative;
        }
        
        .product-image img {
            max-width: 100%;
            max-height: 500px;
            border-radius: 10px;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            transition: transform 0.5s ease;
        }
        
        .product-image img:hover {
            transform: translateY(-10px);
        }
        
        .product-logo {
            display: flex;
            align-items: center;
            margin-bottom: 20px;
        }
        
        .product-logo img {
            height: 50px;
            margin-right: 15px;
        }
        
        .product-logo h3 {
            font-size: 1.8rem;
            color: var(--dark);
        }
        
        .product-desc {
            margin-bottom: 30px;
            color: var(--gray);
        }
        
        /* 偶数产品反向布局 */
        .product:nth-child(even) .product-content {
            order: 2;
            padding-right: 0;
            padding-left: 50px;
        }
        
        .product:nth-child(even) .product-image {
            order: 1;
        }
        
        /* 公司介绍 */
        #about {
            background: linear-gradient(to bottom, rgba(255,255,255,1) 0%, rgba(255,107,53,0.05) 100%);
        }
        
        .about-content {
            display: flex;
            gap: 50px;
            align-items: center;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text p {
            margin-bottom: 20px;
        }
        
        .about-stats {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
        }
        
        .stat-item {
            text-align: center;
            padding: 30px 20px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s ease;
        }
        
        .stat-item:hover {
            transform: translateY(-5px);
        }
        
        .stat-item i {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 5px;
        }
        
        .stat-label {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        /* FAQ */
        #faq {
            background: white;
        }
        
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 15px;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
        }
        
        .faq-question {
            padding: 20px;
            background: white;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
        }
        
        .faq-question:hover {
            background: rgba(255,107,53,0.05);
        }
        
        .faq-question:after {
            content: '+';
            font-size: 1.5rem;
            color: var(--primary);
        }
        
        .faq-question.active:after {
            content: '-';
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            background: rgba(255,107,53,0.03);
        }
        
        .faq-answer.show {
            padding: 20px;
            max-height: 500px;
        }
        
        /* 联系方式 */
        #contact {
            background: linear-gradient(to bottom, rgba(255,107,53,0.05) 0%, rgba(255,255,255,1) 100%);
        }
        
        .contact-container {
            display: flex;
            gap: 50px;
        }
        
        .contact-info {
            flex: 1;
        }
        
        .contact-item {
            display: flex;
            align-items: flex-start;
            margin-bottom: 30px;
        }
        
        .contact-icon {
            font-size: 1.5rem;
            color: var(--primary);
            margin-right: 20px;
            margin-top: 5px;
        }
        
        .contact-text h3 {
            margin-bottom: 5px;
        }
        
        .contact-text p, .contact-text a {
            color: var(--gray);
            transition: color 0.3s ease;
        }
        
        .contact-text a:hover {
            color: var(--primary);
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 30px;
        }
        
        .social-link {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            color: var(--dark);
        }
        
        .social-link:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-5px);
        }
        
        .contact-map {
            flex: 1;
            height: 400px;
            background: #eee;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        /* 页脚 */
        footer {
            background: var(--dark);
            color: white;
            padding: 50px 0 20px;
            text-align: center;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            margin-bottom: 30px;
        }
        
        .footer-links a {
            margin: 0 15px;
            color: rgba(255,255,255,0.7);
            transition: color 0.3s ease;
        }
        
        .footer-links a:hover {
            color: var(--primary);
        }
        
        .copyright {
            color: rgba(255,255,255,0.5);
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .section-title h2 {
                font-size: 2rem;
            }
            
            .product {
                flex-direction: column;
                padding: 80px 0;
            }
            
            .product-content, 
            .product:nth-child(even) .product-content {
                order: 1;
                padding: 0 0 40px 0;
                text-align: center;
            }
            
            .product-image, 
            .product:nth-child(even) .product-image {
                order: 2;
            }
            
            .about-content, 
            .contact-container {
                flex-direction: column;
            }
            
            .about-stats {
                margin-top: 40px;
            }
            
            .contact-map {
                margin-top: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-links {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: white;
                flex-direction: column;
                align-items: center;
                padding-top: 40px;
                transition: left 0.3s ease;
            }
            
            .nav-links.show {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .banner-content h1 {
                font-size: 2.5rem;
            }
            
            .banner-btns {
                flex-direction: column;
                align-items: center;
            }
            
            .product-logo {
                justify-content: center;
            }
        }
        
        @media (max-width: 576px) {
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .banner-content h1 {
                font-size: 2rem;
            }
            
            .product-logo h3 {
                font-size: 1.5rem;
            }
        }