/* 全局样式 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@600&family=Roboto:wght@400&display=swap');

    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0A192F, #000000);
        color: #FFFFFF;
        line-height: 1.6;
        overflow-x: hidden;
    }

    a {
        color: #64FFDA;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    a:hover {
        color: #B4BEC9;
    }

    /* 导航栏样式 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(10, 25, 47, 0.9);
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 50px;
        z-index: 1000;
    }

    .navbar .logo {
        font-family: 'Poppins', sans-serif;
        font-size: 24px;
        color: #64FFDA;
    }

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

    .navbar ul li {
        margin-left: 30px;
    }

    /* 移动端导航 */
    .hamburger {
        display: none;
        flex-direction: column;
        cursor: pointer;
    }

    .hamburger div {
        width: 25px;
        height: 3px;
        background: #FFFFFF;
        margin: 4px 0;
        transition: all 0.3s ease;
    }

    @media (max-width: 768px) {
        .navbar {
            padding: 15px 20px;
        }

        .navbar ul {
            position: fixed;
            left: -100%;
            top: 70px;
            flex-direction: column;
            background: rgba(10, 25, 47, 0.95);
            width: 100%;
            transition: left 0.3s ease;
        }

        .navbar ul.active {
            left: 0;
        }

        .navbar ul li {
            margin: 20px 0;
            text-align: center;
        }

        .hamburger {
            display: flex;
        }
    }

    /* 主标题样式 */
    h1, h2, h3 {
        font-family: 'Poppins', sans-serif;
        font-weight: 600;
        color: #B4BEC9;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 48px;
        background: linear-gradient(90deg, #0A192F, #64FFDA);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    h2 {
        font-size: 32px;
    }

    h3 {
        font-size: 24px;
    }

    /* 段落样式 */
    p {
        font-size: 16px;
        margin-bottom: 15px;
    }

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

    table, th, td {
        border: 1px solid #64FFDA;
    }

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

    th {
        background: #0A192F;
        color: #64FFDA;
    }

    /* 代码块样式 */
    pre {
        background: #1E2A38;
        padding: 15px;
        border-radius: 5px;
        overflow: auto;
        margin-bottom: 20px;
    }

    code {
        font-family: 'Roboto', monospace;
        color: #64FFDA;
    }

    /* 按钮样式 */
    .button {
        background: #B4BEC9;
        color: #000000;
        padding: 10px 20px;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .button:hover {
        background: #64FFDA;
        transform: scale(1.1);
    }

    /* 背景动画 */
    @keyframes auroraMove {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }

    .background-aurora {
        position: absolute;
        width: 100%;
        height: 100%;
        top: 0;
        left: 0;
        background: radial-gradient(circle, rgba(64,255,218,0.2), transparent);
        animation: auroraMove 15s linear infinite;
        z-index: -1;
    }

    /* 动态线条效果 */
    @keyframes moveLines {
        0% { transform: translateY(0); }
        100% { transform: translateY(-100px); }
    }

    .lines {
        position: absolute;
        width: 100%;
        height: 100%;
        overflow: hidden;
        top: 0;
        left: 0;
        z-index: -2;
    }

    .line {
        position: absolute;
        width: 2px;
        height: 100px;
        background: #64FFDA;
        animation: moveLines 5s linear infinite;
    }

    /* 3D地球模型样式 */
    .earth {
        width: 200px;
        height: 200px;
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center;
        background-size: cover;
        border-radius: 50%;
        animation: rotateEarth 10s linear infinite;
        margin: 0 auto;
    }

    @keyframes rotateEarth {
        0% { transform: rotateY(0deg); }
        100% { transform: rotateY(360deg); }
    }

    /* 容器样式 */
    .container {
        max-width: 1200px;
        margin: 100px auto 50px auto;
        padding: 20px;
    }

    /* 模块样式 */
    .module {
        background: rgba(10, 25, 47, 0.8);
        padding: 30px;
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        margin-bottom: 30px;
    }

    /* 响应式布局 */
    @media (max-width: 1440px) {
        .container {
            max-width: 1024px;
        }
    }

    @media (max-width: 1200px) {
        .container {
            max-width: 768px;
        }
    }

    @media (max-width: 768px) {
        .container {
            max-width: 480px;
        }
    }

    @media (max-width: 480px) {
        .container {
            max-width: 320px;
        }
    }

    /* 图片样式 */
    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 10px;
        margin-bottom: 20px;
    }

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

    /* Footer 样式 */
    footer {
        text-align: center;
        padding: 20px;
        background: rgba(10, 25, 47, 0.9);
        color: #B4BEC9;
    }