/* CSS3 现代科技感网页样式 */

    /* 颜色变量定义 */
    :root {
        --deep-blue: #001f3f;
        --silver-gray: #b0b0b0;
        --neon-purple: #8e44ad;
        --gradient-green: #39ff14;
        --text-color: #ffffff;
        --background-gradient: radial-gradient(circle at top left, #001f3f, #8e44ad, #39ff14);
    }

    /* 全局样式 */
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: var(--background-gradient);
        color: var(--text-color);
        line-height: 1.6;
        overflow-x: hidden;
    }

    a {
        color: var(--gradient-green);
        text-decoration: none;
    }

    a[rel="nofollow"] {
        /* No specific styles, just to ensure rel attribute is present */
    }

    /* 顶部导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 31, 63, 0.9);
        padding: 15px 30px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        z-index: 1000;
    }

    .navbar .logo {
        font-size: 1.5em;
        font-weight: bold;
        color: var(--gradient-green);
    }

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

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

    .navbar ul li a {
        font-size: 1em;
        transition: color 0.3s ease;
    }

    .navbar ul li a:hover {
        color: var(--neon-purple);
    }

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

    /* 模块样式 */
    .module {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 30px;
        margin-bottom: 30px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .module:hover {
        transform: translateY(-10px);
        background: rgba(255, 255, 255, 0.2);
    }

    .module h2 {
        font-size: 2em;
        margin-bottom: 15px;
        color: var(--gradient-green);
    }

    .module p {
        font-size: 1.1em;
        margin-bottom: 15px;
        color: var(--silver-gray);
    }

    .module pre {
        background: #2c3e50;
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin-bottom: 15px;
    }

    .module code {
        color: #ecf0f1;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        background: var(--gradient-green);
        color: #000;
        padding: 10px 25px;
        border-radius: 5px;
        transition: background 0.3s ease, transform 0.3s ease;
    }

    .btn:hover {
        background: #2ecc71;
        transform: scale(1.05);
    }

    /* 图片样式 */
    .images-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
        margin-top: 20px;
    }

    .images-grid img {
        width: 100%;
        height: auto;
        border-radius: 10px;
        transition: transform 0.3s ease;
    }

    .images-grid img:hover {
        transform: scale(1.1);
    }

    /* 示例展示 */
    .example-section {
        background: rgba(44, 62, 80, 0.8);
        padding: 30px;
        border-radius: 10px;
        margin-bottom: 30px;
    }

    .example-section h2 {
        color: var(--neon-purple);
        margin-bottom: 20px;
    }

    .example-section pre {
        background: #34495e;
        padding: 20px;
        border-radius: 5px;
        overflow-x: auto;
    }

    /* 脚注 */
    .footer {
        text-align: center;
        padding: 20px;
        background: rgba(0, 31, 63, 0.9);
        color: var(--silver-gray);
        position: relative;
    }

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

    body {
        animation: aurora-move 15s linear infinite;
        background-size: 400% 400%;
    }

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

    @media (max-width: 1200px) {
        .container {
            max-width: 960px;
        }
    }

    @media (max-width: 1024px) {
        .navbar ul {
            display: none;
        }

        .navbar .menu-toggle {
            display: block;
            cursor: pointer;
            font-size: 1.5em;
            color: var(--text-color);
        }
    }

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

        .module h2 {
            font-size: 1.5em;
        }

        .module p {
            font-size: 1em;
        }
    }

    @media (max-width: 480px) {
        .navbar {
            padding: 10px 20px;
        }

        .module {
            padding: 20px;
        }

        .btn {
            padding: 8px 20px;
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        .module h2 {
            font-size: 1.2em;
        }

        .module p {
            font-size: 0.9em;
        }
    }