/* 引入字体 */
    @import url('https://fonts.googleapis.com/css2?family=Roboto+Mono&family=Open+Sans&display=swap');
    
    /* CSS变量定义 */
    :root {
        --bg-color: #121212;
        --text-color: #FFFFFF;
        --primary-color: #00BFFF;
        --secondary-color: #8A2BE2;
        --accent-color: #00FF7F;
        --highlight-color: #FFD700;
        --card-bg: rgba(255, 255, 255, 0.1);
        --button-hover: #0096C7;
        --cta-hover-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
    }
    
    @media (prefers-color-scheme: light) {
        :root {
            --bg-color: #FFFFFF;
            --text-color: #000000;
            --primary-color: #00BFFF;
            --secondary-color: #8A2BE2;
            --accent-color: #00FF7F;
            --highlight-color: #FFD700;
            --card-bg: rgba(0, 0, 0, 0.05);
            --button-hover: #0096C7;
            --cta-hover-shadow: 0 0 10px rgba(255, 215, 0, 0.8);
        }
    }
    
    /* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        background-color: var(--bg-color);
        color: var(--text-color);
        font-family: 'Open Sans', sans-serif;
        line-height: 1.6;
        transition: background-color 0.3s ease, color 0.3s ease;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-family: 'Roboto Mono', monospace;
        margin-top: 0;
    }
    
    a {
        color: var(--primary-color);
        text-decoration: none;
        transition: color 0.3s ease;
    }
    
    a:hover {
        color: var(--highlight-color);
    }
    
    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }
    
    /* 头部 */
    header {
        text-align: center;
        padding: 60px 20px;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        background-size: 400% 400%;
        animation: gradientAnimation 15s ease infinite;
        color: var(--text-color);
    }
    
    header h1 {
        font-size: 48px;
        margin-bottom: 20px;
    }
    
    header p {
        font-size: 24px;
        margin-bottom: 40px;
    }
    
    .cta-button {
        background-color: var(--highlight-color);
        color: var(--text-color);
        border: none;
        padding: 15px 30px;
        font-size: 18px;
        cursor: pointer;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        border-radius: 5px;
    }
    
    .cta-button:hover {
        transform: scale(1.1);
        box-shadow: var(--cta-hover-shadow);
    }
    
    /* 样式动画 */
    @keyframes gradientAnimation {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }
    
    /* 功能模块 */
    .features {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        margin: 40px 0;
    }
    
    .feature-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        width: 30%;
        padding: 20px;
        margin-bottom: 20px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease;
    }
    
    .feature-card:hover {
        transform: translateY(-10px);
    }
    
    .feature-card img {
        width: 60px;
        height: 60px;
        margin-bottom: 20px;
    }
    
    .feature-card h4 {
        margin-bottom: 10px;
        color: var(--highlight-color);
    }
    
    .feature-card p {
        margin: 0;
    }
    
    /* 数据展示 */
    .data-overview {
        margin: 40px 0;
        text-align: center;
    }
    
    .progress-container {
        width: 80%;
        background-color: rgba(255, 255, 255, 0.1);
        border-radius: 25px;
        margin: 20px auto;
        overflow: hidden;
    }
    
    .progress-bar {
        width: 0%;
        height: 20px;
        background-color: var(--primary-color);
        animation: load 2s forwards;
    }
    
    @keyframes load {
        from { width: 0%; }
        to { width: 80%; }
    }
    
    /* 用户评价 */
    .testimonials {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        margin: 40px 0;
    }
    
    .testimonial-card {
        background-color: var(--card-bg);
        border-radius: 10px;
        width: 45%;
        padding: 20px;
        margin-bottom: 20px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease;
    }
    
    .testimonial-card:hover {
        transform: translateY(-10px);
    }
    
    .testimonial-card p {
        font-style: italic;
    }
    
    .testimonial-card h5 {
        margin-top: 15px;
        color: var(--highlight-color);
    }
    
    /* FAQ */
    .faq {
        margin: 40px 0;
    }
    
    .faq-item {
        margin-bottom: 20px;
    }
    
    .faq-item h4 {
        cursor: pointer;
        position: relative;
        padding-right: 20px;
    }
    
    .faq-item h4::after {
        content: '+';
        position: absolute;
        right: 0;
    }
    
    .faq-item.active h4::after {
        content: '-';
    }
    
    .faq-item p {
        display: none;
        margin-top: 10px;
    }
    
    .faq-item.active p {
        display: block;
    }
    
    /* 示例展示 */
    .sample-article {
        margin: 40px 0;
        padding: 20px;
        background-color: var(--card-bg);
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    }
    
    .sample-article h2 {
        margin-bottom: 20px;
        color: var(--highlight-color);
    }
    
    .sample-article pre {
        background-color: #1e1e1e;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        color: #dcdcdc;
        font-family: 'Roboto Mono', monospace;
    }
    
    .sample-article code {
        font-family: 'Roboto Mono', monospace;
    }
    
    /* 社交媒体链接 */
    .social-links {
        text-align: center;
        margin: 40px 0;
    }
    
    .social-links a {
        margin: 0 10px;
        font-size: 24px;
        transition: color 0.3s ease;
    }
    
    .social-links a:hover {
        color: var(--highlight-color);
    }
    
    /* 底部 */
    footer {
        text-align: center;
        padding: 20px;
        background-color: rgba(0, 0, 0, 0.8);
        color: var(--text-color);
    }
    
    /* 响应式设计 */
    @media (max-width: 1440px) {
        .feature-card, .testimonial-card {
            width: 45%;
        }
    }
    
    @media (max-width: 1200px) {
        .feature-card, .testimonial-card {
            width: 45%;
        }
    }
    
    @media (max-width: 1024px) {
        .features, .testimonials {
            flex-direction: column;
            align-items: center;
        }
        
        .feature-card, .testimonial-card {
            width: 80%;
        }
    }
    
    @media (max-width: 768px) {
        header h1 {
            font-size: 36px;
        }
        
        header p {
            font-size: 18px;
        }
        
        .cta-button {
            padding: 10px 20px;
            font-size: 16px;
        }
        
        .feature-card, .testimonial-card {
            width: 100%;
        }
    }
    
    @media (max-width: 480px) {
        header h1 {
            font-size: 28px;
        }
        
        header p {
            font-size: 16px;
        }
        
        .cta-button {
            padding: 8px 16px;
            font-size: 14px;
        }
    }
    
    @media (max-width: 320px) {
        header h1 {
            font-size: 24px;
        }
        
        header p {
            font-size: 14px;
        }
        
        .cta-button {
            padding: 6px 12px;
            font-size: 12px;
        }
    }