/* 全局样式重置与基础设置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        :root {
            --primary-color: #0066ff;
            --secondary-color: #00ccff;
            --dark-color: #1a1a2e;
            --light-color: #f8f9fa;
            --text-color: #333;
            --text-light: #666;
            --transition: all 0.3s ease;
        }
        
        body {
            background-color: #f5f7fa;
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        a {
            text-decoration: none;
            color: var(--primary-color);
            transition: var(--transition);
        }
        
        img {
            max-width: 100%;
            height: auto;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        .section {
            padding: 80px 0;
            position: relative;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: inline-block;
        }
        
        .section-title p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 700px;
            margin: 0 auto;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            text-align: center;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
        }
        
        .btn-primary {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: white;
            box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 102, 255, 0.4);
        }
        
        .btn-outline {
            background: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }
        
        .btn-outline:hover {
            background: var(--primary-color);
            color: white;
        }
        
        /* 导航栏样式 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            transition: var(--transition);
            padding: 15px 0;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        header.scrolled {
            padding: 10px 0;
            background-color: rgba(255, 255, 255, 0.98);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 40px;
            margin-right: 10px;
        }
        
        .logo h1 {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 30px;
        }
        
        nav ul li a {
            font-weight: 600;
            color: var(--dark-color);
            position: relative;
            padding: 5px 0;
        }
        
        nav ul li a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            transition: var(--transition);
        }
        
        nav ul li a:hover:after {
            width: 100%;
        }
        
        .mobile-menu-btn {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--dark-color);
        }
        
        /* Banner 区域 */
        .banner {
            height: 100vh;
            min-height: 700px;
            display: flex;
            align-items: center;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8eb 100%);
            position: relative;
            overflow: hidden;
            padding-top: 80px;
        }
        
        .banner:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiPjxkZWZzPjxwYXR0ZXJuIGlkPSJwYXR0ZXJuIiB3aWR0aD0iNDAiIGhlaWdodD0iNDAiIHBhdHRlcm5Vbml0cz0idXNlclNwYWNlT25Vc2UiIHBhdHRlcm5UcmFuc2Zvcm09InJvdGF0ZSg0NSkiPjxyZWN0IHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgZmlsbD0icmdiYSgwLDAsMCwwLjAyKSIvPjwvcGF0dGVybj48L2RlZnM+PHJlY3Qgd2lkdGg9IjEwMCUiIGhlaWdodD0iMTAwJSIgZmlsbD0idXJsKCNwYXR0ZXJuKSIvPjwvc3ZnPg==');
            opacity: 0.3;
            z-index: 1;
        }
        
        .banner-content {
            display: flex;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        
        .banner-text {
            flex: 1;
            padding-right: 50px;
        }
        
        .banner-image {
            flex: 1;
            text-align: center;
            position: relative;
        }
        
        .banner-image img {
            max-width: 300px;
            border-radius: 15px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            transition: var(--transition);
        }
        
        .banner-image img:hover {
            transform: translateY(-10px);
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
        }
        
        .banner-image p {
            margin-top: 20px;
            font-weight: 500;
            color: var(--text-light);
        }
        
        .typing-text {
            font-size: 3rem;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 20px;
            min-height: 140px;
        }
        
        .typing-text span {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .banner-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 30px;
        }
        
        /* 应用展示区域 */
        .apps-section {
            background-color: white;
        }
        
        .apps-filter {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
            margin-bottom: 40px;
        }
        
        .filter-btn {
            padding: 8px 20px;
            border-radius: 50px;
            background-color: #f1f1f1;
            color: var(--text-color);
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
            border: none;
            outline: none;
        }
        
        .filter-btn.active, .filter-btn:hover {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: white;
        }
        
        .apps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .app-card {
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        
        .app-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        
        .app-card-img {
            height: 200px;
            overflow: hidden;
        }
        
        .app-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .app-card:hover .app-card-img img {
            transform: scale(1.05);
        }
        
        .app-card-content {
            padding: 25px;
        }
        
        .app-card-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .app-card-content p {
            color: var(--text-light);
            margin-bottom: 20px;
        }
        
        /* 功能展示区域 */
        .features-section {
            background-color: #f9fbfd;
        }
        
        .features-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: white;
            border-radius: 15px;
            padding: 30px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        
        .feature-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 25px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.1) 0%, rgba(0, 204, 255, 0.1) 100%);
            border-radius: 50%;
            color: var(--primary-color);
            font-size: 2rem;
        }
        
        .feature-card h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        /* 分割区域 */
        .divider-section {
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .divider-section:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0, 102, 255, 0.05) 0%, rgba(0, 204, 255, 0.05) 100%);
            z-index: -1;
        }
        
        .divider-content {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .divider-content h2 {
            font-size: 2.2rem;
            margin-bottom: 20px;
            color: var(--dark-color);
        }
        
        .divider-content p {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 30px;
        }
        
        /* 教程区域 */
        .tutorials-section {
            background-color: white;
        }
        
        .tutorials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .tutorial-card {
            background-color: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        
        .tutorial-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        
        .tutorial-card-img {
            height: 200px;
            overflow: hidden;
        }
        
        .tutorial-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .tutorial-card:hover .tutorial-card-img img {
            transform: scale(1.05);
        }
        
        .tutorial-card-content {
            padding: 25px;
        }
        
        .tutorial-card-content h3 {
            font-size: 1.3rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .tutorial-card-content p {
            color: var(--text-light);
            margin-bottom: 20px;
        }
        
        .view-more-btn {
            text-align: center;
            margin-top: 50px;
        }
        
        /* 页脚区域 */
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 80px 0 30px;
        }
        
        .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: 25px;
            position: relative;
            padding-bottom: 15px;
        }
        
        .footer-column h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        
        .footer-column p {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 15px;
        }
        
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            transition: var(--transition);
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .contact-info {
            list-style: none;
        }
        
        .contact-info li {
            margin-bottom: 15px;
            display: flex;
            align-items: center;
        }
        
        .contact-info i {
            margin-right: 10px;
            color: var(--secondary-color);
        }
        
        .friend-links {
            text-align: center;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            margin-bottom: 30px;
        }
        
        .friend-links a {
            color: rgba(255, 255, 255, 0.7);
            margin: 0 15px;
            transition: var(--transition);
        }
        
        .friend-links a:hover {
            color: white;
        }
        
        .copyright {
            text-align: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }
        
        /* 返回顶部按钮 */
        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 50px;
            height: 50px;
            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: 1.2rem;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
            z-index: 999;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }
        
        .back-to-top.active {
            opacity: 1;
            visibility: visible;
        }
        
        .back-to-top:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .fade-in-up {
            animation: fadeInUp 0.8s ease forwards;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .section {
                padding: 60px 0;
            }
            
            .banner {
                min-height: 600px;
            }
            
            .banner-content {
                flex-direction: column;
                text-align: center;
            }
            
            .banner-text {
                padding-right: 0;
                margin-bottom: 50px;
            }
            
            .typing-text {
                font-size: 2.5rem;
                min-height: 120px;
            }
            
            .banner-btns {
                justify-content: center;
            }
        }
        
        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 2rem;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            nav {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: white;
                box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
                padding: 20px 0;
                transform: translateY(-150%);
                opacity: 0;
                transition: var(--transition);
                z-index: 999;
            }
            
            nav.active {
                transform: translateY(0);
                opacity: 1;
            }
            
            nav ul {
                flex-direction: column;
            }
            
            nav ul li {
                margin: 0;
                text-align: center;
                padding: 10px 0;
            }
            
            .typing-text {
                font-size: 2rem;
                min-height: 100px;
            }
            
            .apps-grid, .tutorials-grid {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .section {
                padding: 50px 0;
            }
            
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .typing-text {
                font-size: 1.8rem;
                min-height: 90px;
            }
            
            .btn {
                padding: 10px 20px;
                font-size: 0.9rem;
            }
            
            .banner {
                min-height: 500px;
            }
        }