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

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

    /* 设定主体字体和背景渐变 */
    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #000046, #1cb5e0, #2af598);
        color: #ffffff;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
        padding: 20px;
    }

    /* 容器样式 */
    .container {
        width: 100%;
        max-width: 1200px;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        padding: 20px;
    }

    /* 头部样式 */
    header {
        width: 100%;
        text-align: center;
        margin-bottom: 40px;
    }

    header h1 {
        font-size: 48px;
        letter-spacing: 2px;
        text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
        margin-bottom: 10px;
        background: linear-gradient(90deg, #ff7e5f, #feb47b);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    header p {
        font-size: 18px;
        color: #c0c0c0;
    }

    /* 介绍部分 */
    .introduction {
        grid-column: 1 / -1;
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
        position: relative;
        overflow: hidden;
    }

    .introduction::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), transparent);
        animation: rotate 10s linear infinite;
    }

    .introduction h2 {
        font-size: 36px;
        margin-bottom: 20px;
        text-align: center;
    }

    .introduction p {
        font-size: 16px;
        line-height: 1.6;
        text-align: justify;
    }

    @keyframes rotate {
        from {
            transform: rotate(0deg);
        }
        to {
            transform: rotate(360deg);
        }
    }

    /* 图文模块 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, background 0.3s ease;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .card:hover {
        transform: scale(1.05);
        background: rgba(255, 255, 255, 0.2);
    }

    .card img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .card h3 {
        font-size: 24px;
        margin-bottom: 10px;
        text-align: center;
        color: #ff7e5f;
    }

    .card p {
        font-size: 14px;
        text-align: center;
    }

    /* 示例数据展示 */
    .sample-data {
        grid-column: 1 / -1;
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    }

    .sample-data h2 {
        font-size: 28px;
        margin-bottom: 20px;
        text-align: center;
        color: #feb47b;
    }

    .sample-data ul {
        list-style: none;
    }

    .sample-data li {
        margin-bottom: 15px;
        font-size: 16px;
    }

    /* 示例文章展示 */
    .sample-article {
        grid-column: 1 / -1;
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    }

    .sample-article h2 {
        font-size: 28px;
        margin-bottom: 20px;
        text-align: center;
        color: #2af598;
    }

    .sample-article article {
        font-size: 16px;
        line-height: 1.8;
    }

    .sample-article pre {
        background: rgba(0, 0, 0, 0.5);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin: 20px 0;
    }

    .sample-article code {
        color: #ff7e5f;
        font-family: 'Courier New', Courier, monospace;
    }

    .note {
        font-size: 14px;
        color: #c0c0c0;
        text-align: center;
        margin-top: 20px;
    }

    /* 提示信息 */
    .reference {
        grid-column: 1 / -1;
        margin-top: 40px;
        font-size: 18px;
        color: #ff7e5f;
        text-align: center;
    }

    /* 媒体查询 */
    @media (max-width: 480px) {
        header h1 {
            font-size: 32px;
        }

        .introduction h2 {
            font-size: 28px;
        }

        .card h3 {
            font-size: 20px;
        }

        .sample-data h2,
        .sample-article h2 {
            font-size: 24px;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        header h1 {
            font-size: 36px;
        }

        .introduction h2 {
            font-size: 32px;
        }

        .card h3 {
            font-size: 22px;
        }

        .sample-data h2,
        .sample-article h2 {
            font-size: 26px;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        header h1 {
            font-size: 40px;
        }

        .introduction h2 {
            font-size: 34px;
        }

        .card h3 {
            font-size: 24px;
        }

        .sample-data h2,
        .sample-article h2 {
            font-size: 28px;
        }
    }

    @media (min-width: 1025px) and (max-width: 1440px) {
        header h1 {
            font-size: 44px;
        }

        .introduction h2 {
            font-size: 36px;
        }

        .card h3 {
            font-size: 26px;
        }

        .sample-data h2,
        .sample-article h2 {
            font-size: 30px;
        }
    }

    @media (min-width: 1441px) {
        header h1 {
            font-size: 48px;
        }

        .introduction h2 {
            font-size: 38px;
        }

        .card h3 {
            font-size: 28px;
        }

        .sample-data h2,
        .sample-article h2 {
            font-size: 32px;
        }
    }