/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
        font-family: 'Roboto', sans-serif;
        color: #ffffff;
        line-height: 1.6;
    }

    h1, h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        text-shadow: 0px 2px 5px rgba(0, 0, 0, 0.5);
        margin-bottom: 20px;
    }

    h1 {
        font-size: 48px;
        text-align: center;
        margin-top: 40px;
    }

    h2 {
        font-size: 36px;
        margin-top: 60px;
    }

    h3 {
        font-size: 28px;
        margin-top: 40px;
    }

    h4 {
        font-size: 22px;
        margin-top: 30px;
    }

    p {
        font-size: 16px;
        color: #dcdcdc;
        max-width: 800px;
        margin: 0 auto 20px auto;
        padding: 0 20px;
    }

    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin: 20px auto;
        max-width: 800px;
    }

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

    /* 按钮样式 */
    .btn {
        display: inline-block;
        background: linear-gradient(90deg, #ff8a00, #ff00cc);
        color: #ffffff;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        box-shadow: 0px 4px 10px rgba(255, 0, 204, 0.5);
        transition: transform 0.3s ease-in-out, background 0.3s ease-in-out;
        text-decoration: none;
        font-size: 16px;
    }

    .btn:hover {
        transform: scale(1.1);
        background: linear-gradient(90deg, #ff00cc, #ff8a00);
    }

    /* 卡片样式 */
    .card {
        background: rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(10px);
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0px 10px 20px rgba(0, 0, 0, 0.2);
        max-width: 800px;
        margin: 40px auto;
    }

    /* 表格样式 */
    table {
        width: 90%;
        max-width: 800px;
        margin: 20px auto;
        border-collapse: collapse;
    }

    th, td {
        border: 1px solid rgba(255, 255, 255, 0.3);
        padding: 10px;
        text-align: left;
    }

    th {
        background: rgba(0, 0, 0, 0.3);
    }

    /* 图片样式 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        margin: 40px auto;
        max-width: 1000px;
        padding: 0 20px;
    }

    .image-gallery img {
        width: 320px;
        height: 320px;
        object-fit: cover;
        border-radius: 10px;
        box-shadow: 0px 4px 15px rgba(0, 0, 0, 0.3);
    }

    /* 示例数据展示 */
    .example-section {
        background: rgba(255, 255, 255, 0.05);
        padding: 40px 20px;
        margin: 60px 0;
    }

    .example-section h2 {
        text-align: center;
        margin-bottom: 30px;
    }

    .example-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        margin-bottom: 30px;
    }

    .example-item img {
        margin-bottom: 15px;
    }

    .example-item p {
        max-width: 600px;
        text-align: center;
    }

    /* 提示文字样式 */
    .reference-note {
        text-align: center;
        font-size: 18px;
        margin: 30px 0;
        color: #a0a0a0;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 42px;
        }
        h2 {
            font-size: 32px;
        }
        h3 {
            font-size: 24px;
        }
        h4 {
            font-size: 20px;
        }
        p {
            font-size: 15px;
        }
    }

    @media (max-width: 1200px) {
        .image-gallery {
            gap: 15px;
        }
    }

    @media (max-width: 1024px) {
        .card, pre, table {
            padding: 15px;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 36px;
        }
        h2 {
            font-size: 28px;
        }
        h3 {
            font-size: 20px;
        }
        h4 {
            font-size: 18px;
        }
        p {
            font-size: 14px;
        }
        .image-gallery {
            flex-direction: column;
            align-items: center;
        }
        .image-gallery img {
            width: 100%;
            max-width: 300px;
            height: auto;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 28px;
        }
        h2 {
            font-size: 24px;
        }
        h3 {
            font-size: 18px;
        }
        h4 {
            font-size: 16px;
        }
        p {
            font-size: 13px;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 24px;
        }
        .btn {
            padding: 8px 16px;
            font-size: 14px;
        }
    }