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

    h1, h2, h3 {
        font-family: 'Orbitron', sans-serif;
        color: #8a2be2;
    }

    h1 {
        font-size: 48px;
        text-align: center;
        margin-top: 20px;
    }

    h2 {
        font-size: 36px;
        margin-top: 40px;
    }

    h3 {
        font-size: 28px;
        margin-top: 30px;
    }

    p {
        font-size: 16px;
        margin: 20px 0;
    }

    pre {
        background: #1c1c1c;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #8a2be2;
    }

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

    table, th, td {
        border: 1px solid #444;
    }

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

    th {
        background-color: #2c5364;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(32, 58, 67, 0.8);
        padding: 15px 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        transition: background 0.3s ease;
        z-index: 1000;
    }

    .navbar a {
        color: #ffffff;
        text-decoration: none;
        margin: 0 10px;
        transition: color 0.3s ease;
    }

    .navbar a:hover {
        color: #8a2be2;
    }

    /* 主内容 */
    .container {
        padding: 100px 20px 50px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }

    /* 图片样式 */
    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
        gap: 15px;
        margin: 20px 0;
    }

    .images-grid img {
        width: 100%;
        border-radius: 10px;
    }

    /* 响应式设计 */
    @media (max-width: 768px) {
        h1 {
            font-size: 36px;
        }
        h2 {
            font-size: 28px;
        }
        h3 {
            font-size: 22px;
        }
    }

    @media (max-width: 480px) {
        .navbar {
            flex-direction: column;
            align-items: flex-start;
        }
        .container {
            padding: 80px 10px 30px 10px;
        }
    }

    /* 按钮样式 */
    .button {
        background-color: #1cb5e0;
        color: #ffffff;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .button:hover {
        background-color: #8a2be2;
        transform: scale(1.05);
    }

    /* 下划线动画 */
    .underline {
        position: relative;
        display: inline-block;
    }

    .underline::after {
        content: '';
        position: absolute;
        width: 100%;
        transform: scaleX(0);
        height: 2px;
        bottom: 0;
        left: 0;
        background-color: #8a2be2;
        transform-origin: bottom right;
        transition: transform 0.25s ease-out;
    }

    .underline:hover::after {
        transform: scaleX(1);
        transform-origin: bottom left;
    }