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

    body {
        font-family: 'Poppins', sans-serif;
        background: radial-gradient(circle, rgba(25, 118, 210, 1) 0%, rgba(156, 39, 176, 1) 50%, rgba(0, 0, 0, 1) 100%);
        background-size: 400% 400%;
        animation: gradientAnimation 15s ease infinite;
        color: #ffffff;
        line-height: 1.6;
        padding: 20px;
    }

    @keyframes gradientAnimation {
        0% {background-position: 0% 50%;}
        50% {background-position: 100% 50%;}
        100% {background-position: 0% 50%;}
    }

    h1, h2, h3, h4 {
        text-align: center;
        margin-bottom: 20px;
        color: #00ff99;
        text-shadow: 0 0 10px #00ff99, 0 0 20px #00ff99;
    }

    p {
        margin-bottom: 15px;
        font-size: 1rem;
    }

    .container {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 30px;
        padding: 20px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        padding: 20px;
        box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        backdrop-filter: blur(5px);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .card:hover {
        transform: translateY(-10px);
        box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
    }

    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-family: 'Roboto Mono', monospace;
        margin-bottom: 20px;
    }

    code {
        color: #00ff99;
    }

    a {
        color: #00ff99;
        text-decoration: none;
        position: relative;
    }

    a::after {
        content: '';
        position: absolute;
        width: 100%;
        transform: scaleX(0);
        height: 2px;
        bottom: 0;
        left: 0;
        background-color: #00ff99;
        transform-origin: bottom right;
        transition: transform 0.25s ease-out;
    }

    a:hover::after {
        transform: scaleX(1);
        transform-origin: bottom left;
    }

    .gallery {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }

    .gallery img {
        width: 100%;
        max-width: 320px;
        border-radius: 10px;
    }

    .highlight {
        color: #ff4081;
        font-weight: bold;
    }

    /* 按钮样式 */
    .btn {
        display: inline-block;
        padding: 10px 20px;
        margin-top: 10px;
        background: #00ff99;
        color: #000;
        border: none;
        border-radius: 25px;
        cursor: pointer;
        transition: background 0.3s ease;
    }

    .btn:hover {
        background: #00e676;
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        body {
            padding: 10px;
        }
        h1 {
            font-size: 1.5rem;
        }
    }

    @media (min-width: 321px) and (max-width: 480px) {
        h1 {
            font-size: 2rem;
        }
    }

    @media (min-width: 481px) and (max-width: 768px) {
        h1 {
            font-size: 2.5rem;
        }
    }

    @media (min-width: 769px) and (max-width: 1024px) {
        h1 {
            font-size: 3rem;
        }
    }

    @media (min-width: 1025px) and (max-width: 1200px) {
        h1 {
            font-size: 3.5rem;
        }
    }

    @media (min-width: 1201px) {
        h1 {
            font-size: 4rem;
        }
    }