/* 全局优化 */
        :root {
            --primary-color: #4361ee;
            --secondary-color: #3a0ca3;
            --accent-color: #f72585;
            --light-color: #f8f9fa;
            --dark-color: #212529;
            --gray-color: #6c757d;
            --gradient-blue: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
            --gradient-pink: linear-gradient(135deg, #f72585 0%, #b5179e 100%);
            --shadow-sm: 0 2px 10px rgba(0,0,0,0.08);
            --shadow-md: 0 5px 20px rgba(0,0,0,0.12);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.15);
            --border-radius: 12px;
            --transition: all 0.3s ease;
        }
        
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--dark-color);
            overflow-x: hidden;
        }
        
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.3;
        }
        
        section {
            padding: 80px 0;
        }
        
        /* 导航栏优化 */
        .main-nav {
            background: rgba(255, 255, 255, 0.95) !important;
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            padding: 15px 0 !important;
            transition: var(--transition);
        }
        
        .main-nav.scrolled {
            padding: 10px 0 !important;
        }
        
        .navbar-brand {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--primary-color) !important;
            display: flex;
            align-items: center;
        }
        
        .navbar-brand strong {
            background: var(--gradient-blue);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .nav-link {
            font-weight: 600;
            color: var(--dark-color) !important;
            margin: 0 10px;
            padding: 8px 16px !important;
            border-radius: 50px;
            transition: var(--transition);
        }
        
        .nav-link:hover, .nav-link.active {
            background: var(--gradient-blue);
            color: white !important;
            transform: translateY(-2px);
        }
        
        /* 英雄区域优化 */
        .slider {
            background: var(--gradient-blue) !important;
            padding: 120px 0 80px !important;
            position: relative;
            overflow: hidden;
        }
        
        .slider::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,160C1248,160,1344,128,1392,112L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: center;
        }
        
        .slider .block {
            position: relative;
            z-index: 2;
        }
        
        .slider h1 {
            font-size: 3.5rem;
            color: white;
            margin-bottom: 20px;
            text-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .slider h3 {
            color: rgba(255,255,255,0.9);
            font-size: 1.4rem;
            font-weight: 400;
            margin-bottom: 40px;
            max-width: 600px;
        }
        
        .btn-download {
            background: white !important;
            color: var(--primary-color) !important;
            padding: 15px 35px !important;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem !important;
            border: none;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .btn-download:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.2);
            color: var(--secondary-color) !important;
        }
        
        .image-content img {
            border-radius: 30px;
            box-shadow: var(--shadow-lg);
            transition: var(--transition);
        }
        
        .image-content img:hover {
            transform: translateY(-10px);
        }
        
        /* 特色区域优化 */
        .feature {
            position: relative;
        }
        
        .feature:nth-child(even) {
            background-color: #f8fafc;
        }
        
        .feature-content h1 {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .feature-content h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--gradient-pink);
            border-radius: 2px;
        }
        
        .feature-content p.desc {
            font-size: 1.1rem;
            color: var(--gray-color);
            line-height: 1.8;
            margin-bottom: 30px;
        }
        
        /* 服务区域优化 */
        .bg-gray {
            background: linear-gradient(135deg, #f8fafc 0%, #e9ecef 100%) !important;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--secondary-color);
            position: relative;
            display: inline-block;
            margin-bottom: 20px;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--gradient-pink);
            border-radius: 2px;
        }
        
        .service-item {
            background: white;
            padding: 30px;
            border-radius: var(--border-radius);
            margin-bottom: 30px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            height: 100%;
            border: 1px solid rgba(0,0,0,0.05);
        }
        
        .service-item:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-color);
        }
        
        .service-item i {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            display: inline-block;
        }
        
        .service-item h3 {
            color: var(--secondary-color);
            margin-bottom: 15px;
            font-size: 1.4rem;
        }
        
        .service-item p {
            color: var(--gray-color);
            margin-bottom: 0;
        }
        
        /* 视频宣传区域优化 */
        .bg-1 {
            background: var(--gradient-blue) !important;
            position: relative;
            overflow: hidden;
        }
        
        .bg-1::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.1" d="M0,224L48,213.3C96,203,192,181,288,181.3C384,181,480,203,576,192C672,181,768,139,864,138.7C960,139,1056,181,1152,181.3C1248,181,1344,139,1392,117.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: center;
        }
        
        .content-block {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        
        .content-block h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }
        
        .content-block p {
            font-size: 1.3rem;
            color: rgba(255,255,255,0.9);
            max-width: 700px;
            margin: 0 auto 40px;
        }
        
        /* 下载区域优化 */
        .call-to-action-app {
            background: var(--gradient-blue) !important;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .call-to-action-app::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="%23ffffff" fill-opacity="0.05" d="M0,160L48,176C96,192,192,224,288,224C384,224,480,192,576,165.3C672,139,768,117,864,133.3C960,149,1056,203,1152,208C1248,213,1344,171,1392,149.3L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>');
            background-size: cover;
            background-position: center;
        }
        
        .call-to-action-app h2 {
            font-size: 2.8rem;
            color: white;
            margin-bottom: 20px;
            position: relative;
            z-index: 2;
        }
        
        .call-to-action-app p {
            color: rgba(255,255,255,0.9);
            font-size: 1.2rem;
            margin-bottom: 40px;
            position: relative;
            z-index: 2;
        }
        
        .btn-rounded-icon {
            background: white !important;
            color: var(--primary-color) !important;
            padding: 15px 30px !important;
            border-radius: 50px;
            font-weight: 600;
            margin: 10px;
            border: none;
            box-shadow: var(--shadow-md);
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            position: relative;
            z-index: 2;
        }
        
        .btn-rounded-icon:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
            color: var(--secondary-color) !important;
        }
        
        .btn-rounded-icon i {
            font-size: 1.2rem;
        }
        
        /* 页脚优化 */
        .footer-main {
            background: var(--dark-color);
            padding: 40px 0;
            color: white;
        }
        
        .footer-main h3 {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 10px;
            font-weight: 400;
            line-height: 1.6;
        }
        
        .footer-main h3:last-child {
            margin-bottom: 0;
        }
        
        /* 响应式优化 */
        @media (max-width: 992px) {
            section {
                padding: 60px 0;
            }
            
            .slider {
                padding: 100px 0 60px !important;
            }
            
            .slider h1 {
                font-size: 2.8rem;
            }
            
            .slider h3 {
                font-size: 1.2rem;
            }
            
            .feature-content h1,
            .section-title h2 {
                font-size: 2.2rem;
            }
            
            .content-block h1 {
                font-size: 2.5rem;
            }
            
            .call-to-action-app h2 {
                font-size: 2.2rem;
            }
        }
        
        @media (max-width: 768px) {
            .nav-link {
                margin: 5px 0;
                text-align: center;
            }
            
            .slider h1 {
                font-size: 2.2rem;
            }
            
            .btn-download, .btn-rounded-icon {
                width: 100%;
                justify-content: center;
                margin-bottom: 15px;
            }
            
            .image-content {
                margin-top: 40px;
            }
            
            .feature-content h1,
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .service-thumb {
                margin-bottom: 40px;
            }
        }
        
        @media (max-width: 576px) {
            section {
                padding: 50px 0;
            }
            
            .slider {
                padding: 80px 0 40px !important;
            }
            
            .slider h1 {
                font-size: 1.8rem;
            }
            
            .slider h3 {
                font-size: 1rem;
            }
        }
        
        /* 动画效果 */
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-10px); }
        }
        
        .float-animation {
            animation: float 3s ease-in-out infinite;
        }
        
        /* 滚动动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }