/* 基本样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        background: linear-gradient(135deg, #1E3C72, #2A5298);
        color: #333;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 头部样式 */
    header {
        text-align: center;
        padding: 50px 0;
        background: radial-gradient(circle, rgba(30,60,114,1) 0%, rgba(42,82,152,1) 100%);
        color: #fff;
        animation: aurora-move 15s linear infinite;
    }

    header h1 {
        font-size: 3em;
        margin-bottom: 20px;
        font-weight: bold;
    }

    header p {
        font-size: 1.2em;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 15px 30px;
        margin-top: 20px;
        background-color: #00C9A7;
        color: #fff;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s ease;
    }

    .btn:hover {
        background-color: #009688;
    }

    /* 主体内容样式 */
    main {
        padding: 40px 0;
        background: linear-gradient(135deg, #f5f7fa, #c3cfe2);
    }

    main h2 {
        font-size: 2.5em;
        color: #0074D9;
        margin-bottom: 20px;
        text-align: center;
    }

    main p {
        font-size: 1em;
        margin-bottom: 20px;
        text-align: justify;
    }

    /* 示例展示样式 */
    .example-section {
        background: #fff;
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        margin-bottom: 40px;
    }

    .example-section h2 {
        font-size: 2em;
        color: #FF5733;
        margin-bottom: 15px;
        text-align: center;
    }

    .example-section article {
        max-height: 600px;
        overflow-y: auto;
        padding: 10px;
        border: 1px solid #ddd;
        border-radius: 5px;
        background: #f9f9f9;
    }

    .example-section pre {
        background: #272822;
        color: #f8f8f2;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .example-section code {
        font-family: 'Courier New', Courier, monospace;
        font-size: 0.9em;
    }

    /* 数据展示样式 */
    .data-section {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: space-around;
        margin-bottom: 40px;
    }

    .data-card {
        background: #fff;
        border-radius: 10px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.1);
        padding: 20px;
        width: 300px;
        text-align: center;
    }

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

    .data-card h3 {
        margin-top: 15px;
        color: #0074D9;
    }

    .data-card p {
        margin: 10px 0;
        color: #555;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin-top: 20px;
    }

    table, th, td {
        border: 1px solid #ddd;
    }

    th, td {
        padding: 12px;
        text-align: center;
    }

    th {
        background-color: #0074D9;
        color: #fff;
    }

    /* 动态图表样式 */
    .chart {
        text-align: center;
        margin: 30px 0;
    }

    .chart img {
        max-width: 100%;
        height: auto;
        border-radius: 10px;
    }

    /* 用户反馈样式 */
    .feedback-section {
        background: linear-gradient(135deg, #e0eafc, #cfdef3);
        padding: 30px;
        border-radius: 10px;
        text-align: center;
    }

    .feedback-section h2 {
        color: #0074D9;
        margin-bottom: 20px;
    }

    .feedback {
        margin-bottom: 15px;
        font-style: italic;
    }

    /* 提示信息样式 */
    .note {
        text-align: center;
        font-size: 1em;
        color: #FF5733;
        margin-top: 20px;
    }

    /* 图文并茂样式 */
    .image-text {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 20px;
        margin-bottom: 30px;
    }

    .image-text img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
    }

    .image-text div {
        flex: 1;
    }

    /* 表单样式（无实际表单，仅样式参考） */
    .no-form {
        display: none;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 2.5em;
        }

        main h2 {
            font-size: 2em;
        }
    }

    @media (max-width: 1200px) {
        .data-section {
            flex-direction: row;
            justify-content: center;
        }

        .image-text {
            flex-direction: column;
            text-align: center;
        }
    }

    @media (max-width: 1024px) {
        header h1 {
            font-size: 2em;
        }

        .btn {
            padding: 10px 20px;
        }
    }

    @media (max-width: 768px) {
        .data-section {
            flex-direction: column;
            align-items: center;
        }

        .image-text {
            flex-direction: column;
        }

        main h2 {
            font-size: 1.8em;
        }
    }

    @media (max-width: 480px) {
        header h1 {
            font-size: 1.5em;
        }

        .data-card {
            width: 100%;
        }

        main p, .example-section p {
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.2em;
        }

        .btn {
            padding: 8px 16px;
            font-size: 0.9em;
        }
    }

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

    /* 链接样式 */
    a {
        color: #00C9A7;
        text-decoration: none;
    }

    a:hover {
        text-decoration: underline;
    }