/* 基础样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Open Sans', sans-serif;
        background: radial-gradient(circle, rgba(10, 25, 47, 1), rgba(10, 25, 47, 0) );
        color: #E0E0E0;
        line-height: 1.6;
        padding: 20px;
    }

    h1, h2, h3, h4 {
        font-family: 'Roboto', sans-serif;
        color: #646FF0;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5rem;
        text-align: center;
        margin-top: 20px;
    }

    h2 {
        font-size: 2rem;
        margin-top: 40px;
    }

    h3 {
        font-size: 1.75rem;
        margin-top: 30px;
    }

    h4 {
        font-size: 1.5rem;
        margin-top: 25px;
    }

    p {
        margin-bottom: 20px;
        font-size: 1rem;
    }

    a {
        color: #646FF0;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #4C4CE0;
    }

    /* 导航栏样式 */
    .navbar {
        display: flex;
        justify-content: space-between;
        align-items: center;
        background-color: #0A192F;
        padding: 15px 30px;
        border-radius: 8px;
        margin-bottom: 40px;
    }

    .navbar a {
        color: #E0E0E0;
        margin: 0 15px;
        font-size: 1rem;
    }

    /* 主容器 */
    .container {
        max-width: 1200px;
        margin: 0 auto;
    }

    /* 卡片模块 */
    .card-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        margin-top: 20px;
    }

    .card {
        background: #1F2A48;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 16px rgba(0,0,0,0.3);
    }

    .card img {
        width: 100%;
        border-radius: 8px;
        margin-bottom: 15px;
    }

    .card h3 {
        margin-bottom: 10px;
        font-size: 1.5rem;
    }

    .card p {
        font-size: 0.95rem;
    }

    /* 示例展示样式 */
    .example-section {
        background: rgba(10, 25, 47, 0.8);
        padding: 30px;
        border-radius: 10px;
        margin-top: 40px;
    }

    .example-section h2 {
        text-align: center;
        margin-bottom: 20px;
    }

    .example-section pre {
        background: #0A192F;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-size: 0.9rem;
        margin-bottom: 20px;
    }

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

    .example-section table, 
    .example-section th, 
    .example-section td {
        border: 1px solid #646FF0;
    }

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

    .example-section th {
        background-color: #646FF0;
        color: #0A192F;
    }

    /* 数据展示 */
    .data-section {
        margin-top: 40px;
    }

    .data-section ul {
        list-style: disc inside;
        margin-left: 20px;
    }

    .data-section li {
        margin-bottom: 15px;
        font-size: 1rem;
    }

    /* 视觉冲击元素 */
    .background-animation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle, rgba(255,87,34,0.3), transparent);
        animation: aurora-move 15s linear infinite;
        z-index: -1;
    }

    @keyframes aurora-move {
        0% { transform: translateY(0) translateX(0); }
        50% { transform: translateY(-50px) translateX(50px); }
        100% { transform: translateY(0) translateX(0); }
    }

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

    th, td {
        padding: 12px;
        border: 1px solid #646FF0;
        text-align: left;
    }

    th {
        background-color: #646FF0;
        color: #0A192F;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        body {
            padding: 15px;
        }
    }

    @media (max-width: 1200px) {
        .navbar {
            padding: 10px 20px;
        }

        .navbar a {
            margin: 0 10px;
            font-size: 0.9rem;
        }

        h1 {
            font-size: 2.2rem;
        }

        h2 {
            font-size: 1.8rem;
        }

        .card h3 {
            font-size: 1.3rem;
        }
    }

    @media (max-width: 1024px) {
        .card-grid {
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
        }
    }

    @media (max-width: 768px) {
        .navbar {
            flex-direction: column;
            align-items: flex-start;
        }

        .navbar a {
            margin: 5px 0;
            font-size: 0.85rem;
        }

        .card-grid {
            grid-template-columns: 1fr;
        }

        h1 {
            font-size: 2rem;
        }

        h2 {
            font-size: 1.6rem;
        }
    }

    @media (max-width: 480px) {
        body {
            padding: 10px;
        }

        .navbar {
            padding: 8px 15px;
        }

        h1 {
            font-size: 1.8rem;
        }

        h2 {
            font-size: 1.4rem;
        }

        .card h3 {
            font-size: 1.2rem;
        }

        p, li {
            font-size: 0.9rem;
        }
    }

    @media (max-width: 320px) {
        .navbar {
            padding: 5px 10px;
        }

        h1 {
            font-size: 1.5rem;
        }

        h2 {
            font-size: 1.2rem;
        }

        .card h3 {
            font-size: 1rem;
        }

        p, li {
            font-size: 0.85rem;
        }
    }

    /* 按钮样式 */
    .button {
        background-color: #646FF0;
        color: white;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background-color 0.3s ease;
        font-size: 1rem;
    }

    .button:hover {
        background-color: #4C4CE0;
    }

    /* 图片样式 */
    img.decorative {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 8px;
        margin: 10px 0;
    }

    /* 代码块样式 */
    pre {
        background-color: #1F2A48;
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        font-family: 'Courier New', Courier, monospace;
        color: #E0E0E0;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #FF5722;
    }

    /* 表格响应 */
    @media (max-width: 768px) {
        table, thead, tbody, th, td, tr {
            display: block;
        }

        th {
            position: absolute;
            top: -9999px;
            left: -9999px;
        }

        tr {
            margin-bottom: 20px;
        }

        td {
            border: none;
            position: relative;
            padding-left: 50%;
        }

        td::before {
            content: attr(data-label);
            position: absolute;
            left: 10px;
            font-weight: bold;
            color: #646FF0;
        }
    }