/* 基础重置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #ffffff, #f0f4f8);
        color: #333333;
        line-height: 1.6;
        padding: 20px;
    }

    /* 头部样式 */
    header {
        text-align: center;
        padding: 40px 20px;
        background: linear-gradient(135deg, #4A90E2, #87CEEB);
        color: #ffffff;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        margin-bottom: 30px;
    }

    header h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
    }

    header p {
        font-size: 1.2em;
    }

    /* 提示信息 */
    .hint {
        text-align: center;
        margin-bottom: 20px;
        font-size: 1em;
        color: #555555;
    }

    /* 容器样式 */
    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        margin-bottom: 40px;
    }

    /* 卡片样式 */
    .card {
        background: #ffffff;
        border-radius: 12px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        overflow: hidden;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 12px 16px rgba(0,0,0,0.2);
    }

    .card img {
        width: 100%;
        height: 200px;
        object-fit: cover;
    }

    .card-content {
        padding: 20px;
    }

    .card-content h3 {
        margin-bottom: 10px;
        color: #4A90E2;
    }

    .card-content p {
        font-size: 0.95em;
        color: #666666;
    }

    /* 示例数据展示 */
    .example-data {
        padding: 20px;
        background: #f9f9f9;
        border-radius: 10px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        margin-bottom: 40px;
    }

    .example-data h2 {
        margin-bottom: 20px;
        color: #9C27B0;
        text-align: center;
    }

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

    .example-data ul li {
        background: #ffffff;
        padding: 15px;
        margin-bottom: 10px;
        border-left: 5px solid #66BB6A;
        border-radius: 5px;
        transition: background 0.3s ease;
    }

    .example-data ul li:hover {
        background: #f1f8e9;
    }

    .example-data ul li strong {
        color: #333333;
    }

    /* 示例文章展示 */
    .example-article {
        padding: 20px;
        background: #ffffff;
        border-radius: 10px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        margin-bottom: 40px;
    }

    .example-article h2 {
        margin-bottom: 20px;
        color: #4A90E2;
    }

    .example-article h3 {
        margin-top: 20px;
        margin-bottom: 10px;
        color: #66BB6A;
    }

    .example-article h4 {
        margin-top: 15px;
        margin-bottom: 8px;
        color: #9C27B0;
    }

    .example-article p {
        margin-bottom: 15px;
    }

    .example-article pre {
        background: #f4f4f4;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

    .example-article code {
        font-family: 'Courier New', Courier, monospace;
        color: #d63384;
    }

    .example-article table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 20px;
    }

    .example-article table, .example-article th, .example-article td {
        border: 1px solid #dddddd;
    }

    .example-article th, .example-article td {
        padding: 10px;
        text-align: left;
    }

    .example-article th {
        background-color: #f2f2f2;
    }

    /* 脚本样式 */
    .loader {
        animation: fadeIn 1s ease-in-out;
    }

    @keyframes fadeIn {
        from { opacity: 0; }
        to { opacity: 1; }
    }

    /* 响应式设计 */
    @media (max-width: 480px) {
        header h1 {
            font-size: 2em;
        }

        .card img {
            height: 150px;
        }

        .example-article h2 {
            font-size: 1.5em;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        header h1 {
            font-size: 2.5em;
        }

        .card img {
            height: 180px;
        }

        .example-article h2 {
            font-size: 1.8em;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        header h1 {
            font-size: 3em;
        }

        .card img {
            height: 200px;
        }

        .example-article h2 {
            font-size: 2em;
        }
    }

    @media (min-width: 1025px) and (max-width: 1440px) {
        header h1 {
            font-size: 3.5em;
        }

        .card img {
            height: 220px;
        }

        .example-article h2 {
            font-size: 2.2em;
        }
    }

    @media (min-width: 1441px) {
        header h1 {
            font-size: 4em;
        }

        .card img {
            height: 250px;
        }

        .example-article h2 {
            font-size: 2.5em;
        }
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background-color: #66BB6A;
        color: #ffffff;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }

    .btn:hover {
        background-color: #43A047;
    }

    /* 链接样式 */
    a {
        color: #4A90E2;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }

    /* 页脚样式 */
    footer {
        text-align: center;
        padding: 20px;
        background: #f0f4f8;
        border-radius: 10px;
        color: #777777;
    }