/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0F2027, #203A43, #2C5364);
        color: #ffffff;
        overflow-x: hidden;
    }

    /* 背景动画 */
    .background-animation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(255, 87, 34, 0.5), transparent);
        animation: aurora-move 15s linear infinite;
        z-index: -1;
    }

    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    /* 容器 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 头部 */
    header {
        text-align: center;
        padding: 50px 20px;
    }

    header h1 {
        font-size: 48px;
        color: #00BCD4;
        margin-bottom: 20px;
    }

    header p {
        font-size: 18px;
        color: #B0BEC5;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.7);
        padding: 10px 20px;
        display: flex;
        justify-content: center;
        z-index: 1000;
    }

    .navbar a {
        color: #ffffff;
        text-decoration: none;
        margin: 0 15px;
        font-size: 16px;
        transition: color 0.3s ease;
    }

    .navbar a:hover {
        color: #00BCD4;
    }

    /* 主内容 */
    main {
        padding: 100px 20px 50px 20px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    }

    article {
        margin-bottom: 40px;
    }

    article h2 {
        font-size: 36px;
        color: #FFAB40;
        margin-bottom: 20px;
    }

    article h3 {
        font-size: 28px;
        color: #00E676;
        margin-top: 30px;
        margin-bottom: 15px;
    }

    article h4 {
        font-size: 24px;
        color: #FF4081;
        margin-top: 25px;
        margin-bottom: 10px;
    }

    article p {
        font-size: 18px;
        line-height: 1.8;
        color: #ECEFF1;
    }

    article pre {
        background: rgba(0, 0, 0, 0.6);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin: 20px 0;
    }

    article code {
        color: #00E5FF;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 图片样式 */
    .images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    .images img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    }

    /* 示例展示 */
    .example-display {
        background: rgba(255, 255, 255, 0.2);
        padding: 20px;
        border-radius: 10px;
        margin-top: 40px;
    }

    .example-display h2 {
        color: #FFC400;
    }

    /* 按钮样式 */
    .button {
        background-color: #007BFF;
        color: white;
        border: none;
        padding: 12px 25px;
        cursor: pointer;
        font-size: 16px;
        border-radius: 5px;
        transition: background-color 0.3s ease, transform 0.3s ease;
        margin-top: 20px;
    }

    .button:hover {
        background-color: #0056b3;
        transform: scale(1.05);
    }

    /* 网格布局 */
    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        margin-top: 30px;
    }

    .card {
        background-color: rgba(255, 255, 255, 0.15);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.4);
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        header h1 {
            font-size: 28px;
        }
        article h2 {
            font-size: 24px;
        }
        article h3 {
            font-size: 20px;
        }
    }

    @media (min-width: 321px) and (max-width: 480px) {
        header h1 {
            font-size: 32px;
        }
        article h2 {
            font-size: 28px;
        }
        article h3 {
            font-size: 22px;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        header h1 {
            font-size: 40px;
        }
        article h2 {
            font-size: 32px;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        header h1 {
            font-size: 42px;
        }
        article h2 {
            font-size: 34px;
        }
    }

    @media (min-width: 1025px) and (max-width: 1200px) {
        header h1 {
            font-size: 44px;
        }
        article h2 {
            font-size: 36px;
        }
    }

    @media (min-width: 1201px) {
        header h1 {
            font-size: 48px;
        }
        article h2 {
            font-size: 38px;
        }
    }