/* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', 'Inter', sans-serif;
        background: linear-gradient(135deg, #001f3f, #004aad);
        color: #ffffff;
        overflow-x: hidden;
    }

    h1, h2, h3, h4, h5, h6 {
        color: #ffffff;
        margin: 20px 0 10px 0;
        font-weight: bold;
    }

    p {
        line-height: 1.6;
        margin: 10px 0;
        color: #dddddd;
    }

    a {
        color: #00bfff;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #ff4081;
    }

    /* 导航栏样式 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 31, 63, 0.8);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 15px 30px;
        z-index: 1000;
        box-shadow: 0 2px 5px rgba(0,0,0,0.3);
    }

    .navbar a {
        margin: 0 15px;
        font-size: 16px;
        font-weight: 500;
    }

    /* 首屏样式 */
    .hero {
        height: 100vh;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        background: radial-gradient(circle, rgba(0, 79, 173, 0.8), transparent);
        animation: aurora-move 15s linear infinite;
        text-align: center;
        padding: 0 20px;
    }

    .hero h1 {
        font-size: 48px;
        margin-bottom: 20px;
        color: #ffffff;
    }

    .hero p {
        font-size: 18px;
        max-width: 600px;
    }

    /* 模块化内容展示 */
    .section {
        padding: 60px 20px;
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        background: #002c5f;
    }

    .card {
        background: #013a6b;
        border-radius: 10px;
        padding: 20px;
        margin: 15px;
        width: 300px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        transition: transform 0.3s ease, background-color 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        background-color: #0356a6;
    }

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

    .card h3 {
        margin-top: 15px;
        font-size: 20px;
    }

    .card p {
        font-size: 14px;
    }

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

    th, td {
        padding: 12px 15px;
        text-align: left;
        border-bottom: 1px solid #ffffff;
    }

    th {
        background-color: #004aad;
        color: #ffffff;
    }

    /* 代码块样式 */
    pre {
        background: #1e3c72;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
    }

    code {
        color: #ffdd57;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 图片展示 */
    .images-gallery {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 10px;
        margin: 30px 0;
    }

    .images-gallery img {
        width: 150px;
        height: 150px;
        object-fit: cover;
        border-radius: 10px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        .hero h1 {
            font-size: 42px;
        }

        .card {
            width: 280px;
        }
    }

    @media (max-width: 1200px) {
        .hero h1 {
            font-size: 36px;
        }

        .card {
            width: 250px;
        }
    }

    @media (max-width: 1024px) {
        .navbar {
            padding: 10px 20px;
        }

        .hero h1 {
            font-size: 32px;
        }

        .card {
            width: 100%;
            max-width: 400px;
        }
    }

    @media (max-width: 768px) {
        .hero h1 {
            font-size: 28px;
        }

        .navbar a {
            margin: 0 10px;
            font-size: 14px;
        }

        .card {
            width: 100%;
        }
    }

    @media (max-width: 480px) {
        .hero h1 {
            font-size: 24px;
        }

        .card {
            padding: 15px;
        }

        .images-gallery img {
            width: 100px;
            height: 100px;
        }
    }

    @media (max-width: 320px) {
        .hero h1 {
            font-size: 20px;
        }

        .navbar {
            flex-direction: column;
            align-items: flex-start;
        }

        .navbar a {
            margin: 5px 0;
        }
    }

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

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        margin: 10px 0;
        background-color: #00bfff;
        color: #ffffff;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: transform 0.3s ease, background-color 0.3s ease;
        text-align: center;
    }

    .btn:hover {
        transform: scale(1.1);
        background-color: #ff4081;
    }

    /* 文章样式 */
    .article-section {
        background: #001f3f;
        padding: 40px 20px;
    }

    .article-section article {
        max-width: 800px;
        margin: 0 auto;
        background: #002c5f;
        padding: 20px;
        border-radius: 10px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    }

    .article-section pre {
        background: #0d1b2a;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .images-gallery img:hover {
        transform: scale(1.05);
        transition: transform 0.3s ease;
    }