* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }
        
        body {
            font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #f4f4f9 0%, #e0e0f5 100%);
            color: var(--dark-text);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            -webkit-font-smoothing: antialiased;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.5rem 1rem;
            width: 100%;
        }
        
        h1, h2, h3 {
            color: var(--primary-color);
            font-weight: 700;
            line-height: 1.2;
        }
        
        h1 {
            text-align: center;
            font-size: clamp(1.8rem, 5vw, 2.5rem);
            margin-bottom: 1.5rem;
            position: relative;
            padding-bottom: 1rem;
        }
        
        h1::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-radius: 2px;
        }
        
        h2 {
            font-size: clamp(1.5rem, 4vw, 1.8rem);
            margin-bottom: 1.2rem;
        }
        
        /* 定价卡片 - 移动端优化 */
        .pricing-cards {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 1.2rem;
            margin: 1.5rem 0;
        }
        
        .card {
            background: var(--white);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            width: 100%;
            max-width: 400px;
            padding: 1.5rem;
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
        }
        
        .card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        
        .card.popular {
            border: 2px solid var(--primary-color);
        }
        
        .popular-tag {
            position: absolute;
            top: 8px;
            right: -28px;
            background: var(--primary-color);
            color: white;
            padding: 0.2rem 1.8rem;
            font-size: 0.75rem;
            transform: rotate(45deg);
            width: 110px;
            text-align: center;
        }
        
        .card h2 {
            margin-top: 0.5rem;
            font-size: 1.4rem;
        }
        
        .price {
            font-size: 2rem;
            font-weight: 700;
            margin: 1.2rem 0;
            color: var(--primary-color);
        }
        
        .price small {
            font-size: 0.9rem;
            font-weight: normal;
            color: var(--light-text);
        }
        
        .card ul {
            list-style: none;
            text-align: left;
            margin: 1.2rem 0;
            padding: 0 0.8rem;
            font-size: 0.95rem;
        }
        
        .card li {
            margin-bottom: 0.6rem;
            position: relative;
            padding-left: 1.3rem;
        }
        
        .card li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .btn {
            display: inline-block;
            background: var(--primary-color);
            color: var(--white);
            border: none;
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 500;
            text-decoration: none;
            transition: var(--transition);
            margin-top: 0.8rem;
            width: 100%;
        }
        
        .btn:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        
        /* 用户评价 - 移动端优化 */
        .testimonials {
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(8px);
            padding: 1.5rem;
            border-radius: var(--radius-lg);
            margin: 2rem 0;
        }
        
        .testimonial-container {
            position: relative;
        }
        
        .testimonial-carousel {
            display: flex;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            gap: 1rem;
            padding: 0.8rem 0;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        
        .testimonial-carousel::-webkit-scrollbar {
            display: none;
        }
        
        .testimonial {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.2rem;
            min-width: 85vw;
            max-width: 400px;
            scroll-snap-align: start;
            flex: 0 0 auto;
        }
        
        .testimonial p {
            font-style: italic;
            margin-bottom: 0.8rem;
            font-size: 0.95rem;
        }
        
        .author {
            font-weight: bold;
            text-align: right;
            color: var(--primary-color);
            font-size: 0.9rem;
        }
        
        /* 评价指示器 - 移动端优化 */
        .testimonial-indicators {
            display: flex;
            justify-content: center;
            margin-top: 1rem;
            gap: 6px;
        }
        
        .testimonial-indicator {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background-color: rgba(67, 97, 238, 0.3);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .testimonial-indicator.active {
            background-color: var(--primary-color);
            transform: scale(1.2);
        }
        
        /* 统计数据 - 移动端优化 */
        .stats {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin: 2rem 0;
        }
        
        .stat {
            background: var(--white);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 1.2rem;
            text-align: center;
            transition: var(--transition);
        }
        
        .number {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 0.3rem;
        }
        
        .label {
            color: var(--light-text);
            font-size: 0.85rem;
        }
        
        /* 页脚 - 移动端优化 */
        footer {
            background: var(--dark-text);
            color: var(--white);
            text-align: center;
            padding: 1.5rem;
            margin-top: auto;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 - 平板及以上 */
        @media (min-width: 768px) {
            .container {
                padding: 2rem;
            }
            
            .pricing-cards {
                flex-direction: row;
                justify-content: center;
                align-items: stretch;
            }
            
            .card {
                flex: 1;
                min-width: 250px;
                max-width: 350px;
            }
            
            .testimonial {
                min-width: 300px;
            }
            
            .stats {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        
        /* 响应式设计 - 桌面端 */
        @media (min-width: 1024px) {
            .card {
                padding: 2rem;
            }
            
            .testimonial {
                min-width: 350px;
            }
        }
        
        /* 性能优化相关样式 */
        img {
            max-width: 100%;
            height: auto;
        }
        
        /* 减少重绘区域 */
        .card, .stat, .testimonial {
            will-change: transform, box-shadow;
        }
        
        /* 关键渲染路径优化 */
        .critical {
            opacity: 0;
            animation: fadeIn 0.5s ease-in forwards;
        }
        
        @keyframes fadeIn {
            to {
                opacity: 1;
            }
        }