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

    body {
        font-family: 'Roboto', sans-serif;
        line-height: 1.6;
        background: linear-gradient(135deg, #1e3c72, #2a5298);
        color: #ffffff;
        overflow-x: hidden;
    }

    h1, h2, h3, h4 {
        font-weight: bold;
        margin-bottom: 20px;
    }

    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-top: 40px;
    }

    h2 {
        font-size: 2em;
        margin-top: 60px;
    }

    h3 {
        font-size: 1.5em;
        margin-top: 40px;
    }

    p {
        font-size: 1em;
        margin-bottom: 20px;
        padding: 0 20px;
    }

    pre {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        margin: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #00ffcc;
    }

    ul {
        list-style: disc inside;
        margin-bottom: 20px;
    }

    /* 导航栏 */
    .navbar {
        position: fixed;
        top: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.7);
        padding: 15px 20px;
        z-index: 1000;
        display: flex;
        justify-content: center;
    }

    .navbar a {
        color: #ffffff;
        text-decoration: none;
        margin: 0 15px;
        transition: color 0.3s;
    }

    .navbar a:hover {
        color: #00ffcc;
    }

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

    /* 图片样式 */
    .image-gallery {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        margin-bottom: 40px;
    }

    .image-gallery img {
        width: 320px;
        height: 320px;
        object-fit: cover;
        border-radius: 10px;
        transition: transform 0.3s;
    }

    .image-gallery img:hover {
        transform: scale(1.05);
    }

    /* 渐变背景模块 */
    .gradient-section {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(0, 0, 0, 0.5));
        padding: 40px 20px;
        border-radius: 10px;
        margin-bottom: 40px;
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        h1 {
            font-size: 2.3em;
        }
    }

    @media (max-width: 1200px) {
        .image-gallery {
            flex-direction: row;
            flex-wrap: wrap;
        }
    }

    @media (max-width: 1024px) {
        .container {
            padding: 80px 15px 40px 15px;
        }

        .navbar {
            padding: 10px 15px;
        }
    }

    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }

        .image-gallery {
            flex-direction: column;
            align-items: center;
        }
    }

    @media (max-width: 480px) {
        h1 {
            font-size: 1.8em;
        }

        p {
            padding: 0 10px;
        }

        .navbar a {
            margin: 0 10px;
            font-size: 0.9em;
        }
    }

    @media (max-width: 320px) {
        h1 {
            font-size: 1.5em;
        }

        .image-gallery img {
            width: 280px;
            height: 280px;
        }
    }

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

    .animated-background {
        background: radial-gradient(circle, rgb(255, 87, 34), transparent);
        animation: aurora-move 15s linear infinite;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        background-color: #4CAF50;
        color: #ffffff;
        text-decoration: none;
        border-radius: 5px;
        transition: background-color 0.3s;
    }

    .btn:hover {
        background-color: #45a049;
    }

    /* 提示信息 */
    .reference-note {
        text-align: center;
        font-size: 0.9em;
        margin-top: 20px;
        color: #ffcc00;
    }