/* 基本样式 */
    body {
        margin: 0;
        font-family: 'Open Sans', sans-serif;
        background: radial-gradient(circle, rgb(10, 31, 68), transparent);
        color: #ffffff;
        line-height: 1.6;
    }
    
    h1, h2, h3, h4, h5, h6 {
        font-family: 'Roboto Slab', serif;
        color: #2ECC71;
    }
    
    a {
        color: #F39C12;
        text-decoration: none;
        transition: color 0.3s ease;
    }
    
    a:hover {
        color: #2ECC71;
    }
    
    /* 容器布局 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }
    
    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(10, 31, 68, 0.8);
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 10px 20px;
        z-index: 1000;
        transition: transform 0.3s ease;
    }
    
    .navbar.scrolled {
        transform: scale(0.95);
    }
    
    .navbar a {
        margin: 0 10px;
        color: #BDC3C7;
    }
    
    /* 头部背景视频 */
    .header-video {
        position: relative;
        width: 100%;
        height: 100vh;
        overflow: hidden;
    }
    
    .header-video video {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .header-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(10, 31, 68, 0.5);
        display: flex;
        justify-content: center;
        align-items: center;
        color: #ffffff;
        font-size: 2em;
        text-align: center;
    }
    
    /* 主内容 */
    .main {
        padding: 100px 20px 50px 20px;
        background: linear-gradient(135deg, rgba(10, 31, 68, 0.9), rgba(10, 31, 68, 0.7));
    }
    
    /* 模块卡片 */
    .card {
        background: #1A2A4A;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.3);
        padding: 20px;
        margin: 20px 0;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    
    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 12px rgba(0,0,0,0.5);
    }
    
    /* 示例展示 */
    .example-section {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        margin: 40px 0;
    }
    
    .example-section h2 {
        color: #F39C12;
    }
    
    .example-section pre {
        background: #2A3F54;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }
    
    .example-section code {
        color: #1ABC9C;
        font-family: 'Courier New', Courier, monospace;
    }
    
    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }
    
    table, th, td {
        border: 1px solid #BDC3C7;
    }
    
    th, td {
        padding: 10px;
        text-align: left;
    }
    
    th {
        background: #2ECC71;
        color: #ffffff;
    }
    
    /* 图片样式 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    
    .image-gallery img {
        width: 100px;
        height: 100px;
        object-fit: cover;
        border-radius: 5px;
    }
    
    /* 响应式 */
    @media (max-width: 1440px) {
        .header-overlay {
            font-size: 1.8em;
        }
    }
    
    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }
    }
    
    @media (max-width: 1024px) {
        .navbar {
            flex-direction: column;
        }
    }
    
    @media (max-width: 768px) {
        .header-overlay {
            font-size: 1.5em;
        }
        
        .card {
            padding: 15px;
        }
    }
    
    @media (max-width: 480px) {
        .header-overlay {
            font-size: 1.2em;
        }
        
        .image-gallery img {
            width: 80px;
            height: 80px;
        }
    }
    
    @media (max-width: 320px) {
        .navbar a {
            margin: 5px 0;
        }
    }
    
    /* 按钮样式 */
    .button-primary {
        background-color: #2ECC71;
        color: #ffffff;
        border: none;
        padding: 10px 20px;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }
    
    .button-primary:hover {
        background-color: #F39C12;
        transform: scale(1.05);
    }
    
    /* 提示文字 */
    .reference-note {
        text-align: center;
        font-size: 1em;
        margin-top: 20px;
        color: #BDC3C7;
    }