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

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1e006a, #7400b8, #ff8da1);
        color: #ffffff;
        line-height: 1.6;
        transition: background 0.5s ease;
        overflow-x: hidden;
    }

    /* 容器 */
    .container {
        width: 90%;
        max-width: 1200px;
        margin: 0 auto;
        padding: 20px;
    }

    /* 头部样式 */
    header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 0;
    }

    header h1 {
        font-size: 2rem;
        color: #ff8da1;
        text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
    }

    /* 导航菜单 */
    nav {
        position: relative;
    }

    .menu-toggle {
        display: none;
        cursor: pointer;
    }

    .menu-toggle span {
        display: block;
        width: 25px;
        height: 3px;
        margin: 5px;
        background: #ffffff;
        transition: all 0.3s ease;
    }

    .nav-links {
        list-style: none;
        display: flex;
    }

    .nav-links li {
        margin-left: 20px;
    }

    .nav-links a {
        text-decoration: none;
        color: #ffffff;
        font-size: 1rem;
        position: relative;
        transition: color 0.3s ease;
    }

    .nav-links a:hover {
        color: #00d9ff;
        text-shadow: 0 0 10px #00d9ff;
    }

    /* 隐藏式球形菜单 */
    .hidden-menu {
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%) scale(0);
        width: 300px;
        height: 300px;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 50%;
        backdrop-filter: blur(10px);
        display: flex;
        justify-content: center;
        align-items: center;
        transition: transform 0.5s ease;
        z-index: -1;
    }

    .hidden-menu.active {
        transform: translate(-50%, -50%) scale(1);
        z-index: 10;
    }

    .hidden-menu ul {
        list-style: none;
        text-align: center;
    }

    .hidden-menu ul li {
        margin: 20px 0;
    }

    .hidden-menu ul li a {
        color: #ffffff;
        font-size: 1.2rem;
        text-decoration: none;
        transition: color 0.3s ease;
    }

    .hidden-menu ul li a:hover {
        color: #ffa500;
    }

    /* 主要内容 */
    main {
        padding: 40px 0;
    }

    .section-title {
        font-size: 2rem;
        margin-bottom: 20px;
        color: #ff8da1;
        text-align: center;
        position: relative;
    }

    .section-title::after {
        content: '';
        width: 50px;
        height: 3px;
        background: #00d9ff;
        position: absolute;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
    }

    /* 文章展示 */
    .article-demo {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        margin-bottom: 40px;
    }

    .article-demo h2, .article-demo h3 {
        color: #ff8da1;
    }

    .article-demo pre {
        background: rgba(0, 0, 0, 0.5);
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }

    .article-demo code {
        color: #00ffea;
        font-family: 'Courier New', Courier, monospace;
    }

    /* 示例数据展示 */
    .data-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
        gap: 20px;
    }

    .data-item {
        background: rgba(255, 255, 255, 0.1);
        padding: 15px;
        border-radius: 10px;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .data-item:hover {
        transform: translateY(-10px);
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    }

    .data-item img {
        width: 100%;
        height: auto;
        border-radius: 5px;
        margin-bottom: 10px;
    }

    .data-item h4 {
        margin-bottom: 10px;
        color: #00d9ff;
    }

    .data-item p {
        font-size: 0.9rem;
    }

    /* 动态粒子背景 */
    .particles {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: -2;
        pointer-events: none;
    }

    .particle {
        position: absolute;
        width: 5px;
        height: 5px;
        background: #ffffff;
        border-radius: 50%;
        opacity: 0.7;
        animation: moveParticles 5s infinite;
    }

    @keyframes moveParticles {
        0% { transform: translate(0, 0) scale(1); opacity: 0.7; }
        50% { transform: translate(100px, 100px) scale(1.5); opacity: 1; }
        100% { transform: translate(200px, 200px) scale(1); opacity: 0.7; }
    }

    /* 响应式设计 */
    @media (max-width: 1440px) {
        header h1 {
            font-size: 1.8rem;
        }

        .nav-links a {
            font-size: 0.9rem;
        }
    }

    @media (max-width: 1200px) {
        .container {
            width: 95%;
        }

        .data-grid {
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        }
    }

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

        .menu-toggle {
            display: block;
        }

        .hidden-menu {
            width: 200px;
            height: 200px;
        }

        .hidden-menu ul li {
            margin: 15px 0;
        }

        .section-title {
            font-size: 1.8rem;
        }
    }

    @media (max-width: 768px) {
        .section-title {
            font-size: 1.5rem;
        }

        .data-grid {
            grid-template-columns: 1fr;
        }
    }

    @media (max-width: 480px) {
        header {
            flex-direction: column;
        }

        .nav-links a {
            font-size: 0.8rem;
        }

        .section-title {
            font-size: 1.2rem;
        }
    }

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

        .data-item h4 {
            font-size: 1rem;
        }

        .data-item p {
            font-size: 0.8rem;
        }
    }