/* 全局样式 */
    body {
        margin: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #00008B, #8A2BE2);
        color: #FFFFFF;
        overflow-x: hidden;
    }

    /* 顶部导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 139, 0.8);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 40px;
        z-index: 1000;
    }

    .navbar .logo {
        font-size: 24px;
        font-weight: bold;
        color: #FFFFFF;
    }

    .navbar ul {
        list-style: none;
        display: flex;
        margin: 0;
        padding: 0;
    }

    .navbar ul li {
        margin-left: 20px;
    }

    .navbar ul li a {
        text-decoration: none;
        color: #FFFFFF;
        font-size: 16px;
        transition: color 0.3s ease;
    }

    .navbar ul li a:hover {
        color: #FFD700;
    }

    /* 主内容区 */
    .section {
        min-height: 100vh;
        padding: 100px 60px 60px 60px;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
    }

    .section:nth-child(even) {
        background: linear-gradient(135deg, #8A2BE2, #00008B);
    }

    .section h1, .section h2, .section h3 {
        font-weight: bold;
        margin-bottom: 20px;
    }

    .section p {
        line-height: 1.6;
        margin-bottom: 20px;
        max-width: 800px;
    }

    /* 卡片布局 */
    .cards {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }

    .card {
        background: #1E1E1E;
        border-radius: 10px;
        box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2);
        padding: 20px;
        width: 300px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        box-shadow: 0px 8px 16px rgba(0, 0, 0, 0.3);
    }

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

    .card h3 {
        margin-bottom: 10px;
    }

    /* 代码块样式 */
    pre {
        background: #2F4F4F;
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        max-width: 100%;
    }

    code {
        color: #FFD700;
        font-family: 'Courier New', Courier, monospace;
        font-size: 14px;
    }

    /* 示例文章区 */
    .sample-article {
        background: rgba(255, 255, 255, 0.1);
        padding: 40px;
        border-radius: 10px;
        max-width: 1000px;
        margin: 40px auto;
        text-align: left;
    }

    .sample-article h2, .sample-article h3, .sample-article h4 {
        color: #FFD700;
    }

    .sample-article ul {
        list-style: disc;
        padding-left: 20px;
    }

    /* 提示语 */
    .prompt {
        position: fixed;
        bottom: 20px;
        right: 20px;
        background: rgba(0, 0, 139, 0.8);
        color: #FFFFFF;
        padding: 10px 20px;
        border-radius: 20px;
        font-size: 14px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .section {
            padding: 80px 40px 40px 40px;
        }
        .navbar ul li a {
            font-size: 14px;
        }
    }

    @media (max-width: 1200px) {
        .cards {
            flex-direction: column;
            align-items: center;
        }
        .card {
            width: 80%;
        }
    }

    @media (max-width: 1024px) {
        .navbar {
            padding: 15px 30px;
        }
        .navbar .logo {
            font-size: 20px;
        }
        .navbar ul li {
            margin-left: 15px;
        }
    }

    @media (max-width: 768px) {
        .section {
            padding: 60px 20px 20px 20px;
        }
        .card {
            width: 100%;
        }
    }

    @media (max-width: 480px) {
        .navbar ul {
            flex-direction: column;
            background: rgba(0, 0, 139, 0.9);
            position: absolute;
            top: 60px;
            right: 0;
            width: 200px;
            display: none;
        }
        .navbar ul.active {
            display: flex;
        }
        .navbar .menu-toggle {
            display: block;
            cursor: pointer;
        }
    }

    @media (max-width: 320px) {
        .navbar {
            padding: 10px 20px;
        }
        .section p {
            font-size: 14px;
        }
    }