/* 导入字体 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&family=Roboto:wght@400;700&display=swap');

    /* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Poppins', sans-serif;
        background: linear-gradient(135deg, #8BC34A, #2196F3);
        color: #333333;
        line-height: 1.6;
        padding: 20px;
    }

    a {
        color: #2196F3;
        text-decoration: none;
        rel: nofollow;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 头部样式 */
    header {
        background: radial-gradient(circle, rgba(255,87,34,1) 0%, rgba(255,87,34,0) 70%);
        padding: 60px 20px;
        text-align: center;
        color: #FFFFFF;
        position: relative;
    }

    header h1 {
        font-family: 'Roboto', sans-serif;
        font-size: 2.5em;
        font-weight: bold;
        margin-bottom: 10px;
    }

    header p {
        font-size: 1.2em;
        max-width: 600px;
        margin: 0 auto;
    }

    /* 导航栏样式 */
    nav {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 20px;
    }

    nav a {
        font-size: 1em;
        padding: 10px 15px;
        border-radius: 5px;
        transition: background 0.3s ease;
    }

    nav a:hover {
        background: rgba(255, 255, 255, 0.2);
    }

    /* 主内容区 */
    .container {
        max-width: 1200px;
        margin: 40px auto;
        padding: 20px;
        background: rgba(245, 245, 245, 0.9);
        border-radius: 10px;
        box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    }

    .section {
        margin-bottom: 40px;
    }

    .section h2 {
        font-family: 'Roboto', sans-serif;
        font-size: 2em;
        color: #2196F3;
        margin-bottom: 20px;
        text-align: center;
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .card {
        background: #FFFFFF;
        padding: 20px;
        border-radius: 8px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 5px;
    }

    .card h3 {
        margin-top: 15px;
        font-size: 1.5em;
        color: #8BC34A;
    }

    .card p {
        margin-top: 10px;
        font-size: 1em;
        color: #555555;
    }

    /* 示例展示样式 */
    .example {
        background: #F5F5F5;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 6px 12px rgba(0,0,0,0.1);
    }

    .example h2 {
        color: #FF5722;
        margin-bottom: 20px;
        text-align: center;
    }

    .example pre {
        background: #272822;
        color: #F8F8F2;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-family: 'Roboto', monospace;
        margin-bottom: 20px;
    }

    .example code {
        font-family: 'Roboto', monospace;
    }

    /* 代码展示样式 */
    .code-snippet {
        background: #333333;
        color: #FFFFFF;
        padding: 15px;
        border-radius: 5px;
        font-family: 'Roboto', monospace;
        overflow-x: auto;
        margin-bottom: 20px;
    }

    /* 底部样式 */
    footer {
        text-align: center;
        padding: 20px;
        background: #C0C0C0;
        border-radius: 10px;
        margin-top: 40px;
    }

    footer p {
        color: #333333;
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }

        .section h2 {
            font-size: 1.8em;
        }

        nav {
            flex-direction: column;
            gap: 10px;
        }
    }

    @media (max-width: 480px) {
        header {
            padding: 40px 10px;
        }

        header h1 {
            font-size: 1.8em;
        }

        .section h2 {
            font-size: 1.5em;
        }
    }

    /* 动画效果 */
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .animated-background {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 提示信息 */
    .reference-note {
        text-align: center;
        font-size: 1.2em;
        color: #FFFFFF;
        margin-top: 20px;
    }