/* 基本样式设置 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        background: linear-gradient(135deg, #0074D9, #FF851B);
        color: #333333;
        line-height: 1.6;
        padding: 20px;
    }

    h1, h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        font-weight: bold;
        margin-bottom: 15px;
    }

    h1 {
        font-size: 2.5em;
        color: #0074D9;
    }

    h2 {
        font-size: 2em;
        color: #FF851B;
    }

    h3 {
        font-size: 1.75em;
        color: #0074D9;
    }

    h4 {
        font-size: 1.5em;
        color: #FF851B;
    }

    p {
        margin-bottom: 15px;
    }

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

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

    table {
        width: 100%;
        border-collapse: collapse;
        margin-bottom: 15px;
    }

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

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

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

    /* 按钮样式 */
    .button {
        display: inline-block;
        padding: 10px 20px;
        background-color: #0074D9;
        color: white;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }

    .button:hover {
        background-color: #005bb5;
        transform: scale(1.05);
    }

    /* 卡片样式 */
    .card {
        width: 300px;
        margin: 20px auto;
        padding: 20px;
        background-color: #FFFFFF;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
        border-radius: 8px;
        transition: transform 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
    }

    /* 渐变背景 */
    .gradient-background {
        background: linear-gradient(135deg, #0074D9, #FF851B);
        height: 200px;
        width: 200px;
        border-radius: 50%;
        margin: 20px auto;
    }

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

    .animated-background {
        background: radial-gradient(circle, rgba(255, 87, 34, 0.8), transparent);
        animation: aurora-move 15s linear infinite;
        height: 100vh;
        width: 100%;
        position: fixed;
        top: 0;
        left: 0;
        z-index: -1;
    }

    /* 响应式网格系统 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    .grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
    }

    /* 图片样式 */
    .responsive-img {
        width: 100%;
        height: auto;
        border-radius: 8px;
    }

    /* 导航栏 */
    .navbar {
        display: flex;
        justify-content: center;
        background-color: rgba(0, 0, 0, 0.5);
        padding: 10px 0;
        margin-bottom: 30px;
    }

    .navbar a {
        color: white;
        text-decoration: none;
        margin: 0 15px;
        font-size: 1.2em;
        transition: color 0.3s ease;
    }

    .navbar a:hover {
        color: #FF851B;
    }

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

    th, td {
        padding: 12px 15px;
        text-align: left;
    }

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

    tr:nth-child(even) {
        background-color: #f9f9f9;
    }

    /* 适应不同屏幕尺寸 */
    @media (max-width: 320px) {
        h1 {
            font-size: 1.5em;
        }
        .navbar a {
            margin: 0 5px;
            font-size: 1em;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.8em;
        }
        .grid {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }
        .navbar {
            flex-direction: column;
        }
        .navbar a {
            margin: 10px 0;
        }
    }

    @media (min-width: 1024px) and (max-width: 1200px) {
        h1 {
            font-size: 2.5em;
        }
    }

    @media (min-width: 1200px) {
        h1 {
            font-size: 3em;
        }
    }

    /* 提示信息样式 */
    .reference-note {
        text-align: center;
        font-size: 1em;
        color: #ffffff;
        margin-top: 20px;
        opacity: 0.8;
    }

    /* 代码块优化 */
    pre {
        background: #2d2d2d;
        color: #f8f8f2;
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #f8f8f2;
    }

    /* 图表动画 */
    .chart-bar {
        width: 50px;
        height: 100px;
        background-color: #0074D9;
        animation: grow 1s ease-in-out;
        margin: 0 10px;
        display: inline-block;
    }

    @keyframes grow {
        from { height: 0; }
        to { height: 100px; }
    }