/* 全局样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        :root {
            --primary-color: #3498db;
            --secondary-color: #2ecc71;
            --accent-color: #e74c3c;
            --text-color: #333;
            --text-light: #777;
            --bg-color: #f9f9f9;
            --white: #fff;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s ease;
        }
        
        body {
            font-family: 'Microsoft YaHei', 'PingFang SC', sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: var(--bg-color);
        }
        
        /* 容器 */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部导航 */
        header {
            background-color: var(--white);
            box-shadow: var(--shadow);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            transition: var(--transition);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 32px;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            text-decoration: none;
            color: var(--text-color);
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        
        nav ul li a:hover {
            color: var(--primary-color);
        }
        
        nav ul li a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary-color);
            transition: var(--transition);
        }
        
        nav ul li a:hover::after {
            width: 100%;
        }
        
        .download-btn {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 10px 25px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
        }
        
        .download-btn:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
        }
        
        /* 移动端菜单按钮 */
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            cursor: pointer;
            color: var(--text-color);
        }
        
        /* 英雄区域 */
        .hero {
            padding: 150px 0 100px;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            position: relative;
            overflow: hidden;
            margin-top: 80px;
        }
        
        .hero-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .hero-text {
            max-width: 500px;
        }
        
        .hero-text h1 {
            font-size: 48px;
            margin-bottom: 20px;
            line-height: 1.2;
            color: var(--text-color);
        }
        
        .hero-text p {
            font-size: 18px;
            margin-bottom: 30px;
            color: var(--text-light);
        }
        
        .hero-buttons {
            display: flex;
            gap: 20px;
        }
        
        .primary-btn {
            background-color: var(--primary-color);
            color: var(--white);
            padding: 15px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
            display: inline-flex;
            align-items: center;
        }
        
        .primary-btn:hover {
            background-color: #2980b9;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
        }
        
        .primary-btn i {
            margin-right: 10px;
        }
        
        .secondary-btn {
            background-color: transparent;
            color: var(--primary-color);
            padding: 15px 30px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: var(--transition);
            border: 2px solid var(--primary-color);
            display: inline-flex;
            align-items: center;
        }
        
        .secondary-btn:hover {
            background-color: var(--primary-color);
            color: var(--white);
            transform: translateY(-3px);
        }
        
        .secondary-btn i {
            margin-right: 10px;
        }
        
        .hero-image {
            max-width: 500px;
            position: relative;
        }
        
        .hero-image img {
            width: 100%;
            border-radius: 20px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
            animation: float 6s ease-in-out infinite;
        }
        
        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
            100% {
                transform: translateY(0px);
            }
        }
        
        /* 特性部分 */
        .features {
            padding: 100px 0;
            background-color: var(--white);
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 36px;
            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: var(--primary-color);
        }
        
        .section-title p {
            font-size: 16px;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .feature-card {
            background-color: var(--bg-color);
            padding: 30px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .feature-icon {
            font-size: 48px;
            color: var(--primary-color);
            margin-bottom: 20px;
            transition: var(--transition);
        }
        
        .feature-card:hover .feature-icon {
            transform: scale(1.2);
            color: var(--secondary-color);
        }
        
        .feature-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--text-color);
        }
        
        .feature-card p {
            color: var(--text-light);
            font-size: 15px;
        }
        
        /* 软件展示 */
        .software-showcase {
            padding: 100px 0;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: var(--white);
        }
        
        .software-showcase .section-title h2 {
            color: var(--white);
        }
        
        .software-showcase .section-title h2::after {
            background-color: var(--white);
        }
        
        .software-showcase .section-title p {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .showcase-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 50px;
        }
        
        .showcase-image {
            max-width: 500px;
        }
        
        .showcase-image img {
            width: 100%;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
        }
        
        .showcase-details {
            max-width: 500px;
        }
        
        .showcase-details h3 {
            font-size: 28px;
            margin-bottom: 20px;
        }
        
        .showcase-details p {
            font-size: 16px;
            margin-bottom: 20px;
            opacity: 0.9;
        }
        
        .showcase-details ul {
            list-style: none;
            margin-bottom: 30px;
        }
        
        .showcase-details ul li {
            margin-bottom: 10px;
            padding-left: 30px;
            position: relative;
            opacity: 0.9;
        }
        
        .showcase-details ul li::before {
            content: '?';
            position: absolute;
            left: 0;
            color: var(--secondary-color);
            font-weight: bold;
        }
        
        /* 下载部分 */
        .download-section {
            padding: 100px 0;
            background-color: var(--white);
        }
        
        .download-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        
        .download-card {
            background-color: var(--bg-color);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .download-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .download-card-header {
            background-color: var(--primary-color);
            padding: 20px;
            text-align: center;
            color: var(--white);
        }
        
        .download-card-header i {
            font-size: 48px;
            margin-bottom: 10px;
        }
        
        .download-card-header h3 {
            font-size: 20px;
        }
        
        .download-card-body {
            padding: 20px;
        }
        
        .download-card-body p {
            margin-bottom: 20px;
            color: var(--text-light);
        }
        
        .download-card-body ul {
            list-style: none;
            margin-bottom: 20px;
        }
        
        .download-card-body ul li {
            margin-bottom: 10px;
            padding-left: 25px;
            position: relative;
            font-size: 14px;
            color: var(--text-light);
        }
        
        .download-card-body ul li::before {
            content: '?';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
            font-size: 20px;
        }
        
        .download-card-footer {
            padding: 0 20px 20px;
        }
        
        .download-card-footer .download-btn {
            display: block;
            text-align: center;
        }
        
        /* 常见问题 */
        .faq {
            padding: 100px 0;
            background-color: var(--bg-color);
        }
        
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 20px;
            background-color: var(--white);
            border-radius: 10px;
            box-shadow: var(--shadow);
            overflow: hidden;
        }
        
        .faq-question {
            padding: 20px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
        }
        
        .faq-question:hover {
            background-color: #f5f5f5;
        }
        
        .faq-question i {
            transition: var(--transition);
        }
        
        .faq-answer {
            padding: 0 20px 20px;
            color: var(--text-light);
            display: none;
        }
        
        .faq-item.active .faq-answer {
            display: block;
        }
        
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        
        /* 页脚 */
        footer {
            background-color: #2c3e50;
            color: var(--white);
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 50px;
        }
        
        .footer-column h3 {
            font-size: 18px;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column ul li a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-column ul li a:hover {
            color: var(--white);
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: rgba(255, 255, 255, 0.1);
            color: var(--white);
            transition: var(--transition);
        }
        
        .social-links a:hover {
            background-color: var(--primary-color);
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content,
            .showcase-content {
                flex-direction: column;
                text-align: center;
            }
            
            .hero-buttons {
                justify-content: center;
            }
            
            .features-grid,
            .download-cards,
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            nav {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                background-color: var(--white);
                padding: 20px 0;
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
                transition: var(--transition);
            }
            
            nav.active {
                left: 0;
            }
            
            nav ul {
                flex-direction: column;
                align-items: center;
            }
            
            nav ul li {
                margin: 15px 0;
            }
            
            .features-grid,
            .download-cards,
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .hero-text h1 {
                font-size: 36px;
            }
        }