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

    /* 容器样式 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 40px 0;
    }

    /* 头部样式 */
    header {
        text-align: center;
        padding: 60px 0;
        background: linear-gradient(45deg, #2c3e50, #4ca1af);
        border-bottom: 2px solid #ffffff;
    }

    header h1 {
        font-size: 3em;
        color: #fff;
        text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.5);
    }

    /* 提示信息 */
    .prompt {
        text-align: center;
        font-size: 1.2em;
        margin-bottom: 40px;
        color: #f39c12;
    }

    /* 主内容区域 */
    main {
        display: flex;
        flex-direction: column;
        gap: 40px;
    }

    /* 章节样式 */
    section {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(10px);
        border: 1px solid rgba(255, 255, 255, 0.3);
    }

    section h2 {
        font-size: 2em;
        color: #1abc9c;
        margin-bottom: 20px;
        position: relative;
    }

    section h2::after {
        content: '';
        width: 50px;
        height: 3px;
        background: #e74c3c;
        display: block;
        margin-top: 10px;
        border-radius: 2px;
    }

    section p {
        font-size: 1em;
        color: #bdc3c7;
    }

    /* 示例展示 */
    .example-article {
        background: rgba(52, 73, 94, 0.8);
        padding: 20px;
        border-radius: 10px;
    }

    .example-article h2, .example-article h3, .example-article h4 {
        color: #ecf0f1;
    }

    .example-article pre {
        background: #2c3e50;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .example-article code {
        color: #e74c3c;
        font-family: 'Courier New', Courier, monospace;
    }

    .example-article table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    .example-article table, .example-article th, .example-article td {
        border: 1px solid #95a5a6;
    }

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

    .example-article th {
        background: #34495e;
        color: #ecf0f1;
    }

    /* 示例数据项目卡 */
    .projects {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .project-card {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        position: relative;
        overflow: hidden;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .project-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.5);
    }

    .project-card img {
        width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 15px;
    }

    .project-card h3 {
        color: #f1c40f;
        margin-bottom: 10px;
    }

    .project-card p {
        color: #bdc3c7;
        font-size: 0.95em;
        margin-bottom: 15px;
    }

    .project-card .tags {
        display: flex;
        flex-wrap: wrap;
        gap: 5px;
    }

    .project-card .tags span {
        background: #8e44ad;
        color: #fff;
        padding: 5px 10px;
        border-radius: 20px;
        font-size: 0.8em;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background: #e67e22;
        color: #fff;
        border: none;
        border-radius: 25px;
        text-decoration: none;
        font-size: 1em;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .btn:hover {
        background: #d35400;
        transform: scale(1.05);
    }

    /* 图片样式 */
    .decorative-images {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 20px;
    }

    .decorative-images img {
        width: 100px;
        height: 100px;
        border-radius: 10px;
        object-fit: cover;
    }

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

    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }

        .project-card img {
            height: 150px;
            object-fit: cover;
        }
    }

    @media (max-width: 1024px) {
        .example-article pre {
            font-size: 0.9em;
        }
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }

        .projects {
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        }
    }

    @media (max-width: 480px) {
        .project-card {
            padding: 15px;
        }

        .project-card h3 {
            font-size: 1.2em;
        }

        .project-card p {
            font-size: 0.9em;
        }

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

    @media (max-width: 320px) {
        header h1 {
            font-size: 1.5em;
        }

        .project-card img {
            width: 80px;
            height: 80px;
        }

        .decorative-images img {
            width: 80px;
            height: 80px;
        }
    }

    /* 动画效果 */
    @keyframes fadeIn {
        from { opacity: 0; transform: translateY(20px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .animated {
        animation: fadeIn 1s ease forwards;
    }

    /* 代码块样式 */
    pre code {
        display: block;
        padding: 15px;
        background: #2c3e50;
        color: #ecf0f1;
        border-radius: 5px;
        overflow-x: auto;
        font-size: 0.9em;
    }

    /* 表格样式 */
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 20px 0;
    }

    table th, table td {
        border: 1px solid #95a5a6;
        padding: 10px;
        text-align: left;
    }

    table th {
        background: #34495e;
        color: #ecf0f1;
    }

    table tr:nth-child(even) {
        background: rgba(255, 255, 255, 0.05);
    }