/* 引入字体 */
    @import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');

    /* 全局样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Orbitron', sans-serif;
        background: linear-gradient(135deg, #8e44ad, #3498db, #2ecc71);
        background-size: 200% 200%;
        animation: gradient-animation 10s ease infinite;
        color: #ffffff;
    }

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

    h1, h2, h3, h4 {
        text-align: center;
        margin: 20px 0;
        color: #ffffff;
    }

    h1 {
        font-size: 3em;
        font-weight: 700;
    }

    h2 {
        font-size: 2.5em;
        font-weight: 700;
    }

    h3 {
        font-size: 2em;
        font-weight: 700;
    }

    h4 {
        font-size: 1.5em;
        font-weight: 700;
    }

    p {
        font-size: 1em;
        line-height: 1.6;
        margin: 10px 20px;
    }

    ul {
        list-style: none;
        padding: 0 40px;
        margin: 10px 0;
    }

    ul li {
        margin: 10px 0;
        position: relative;
        padding-left: 20px;
    }

    ul li::before {
        content: '•';
        position: absolute;
        left: 0;
        color: #ff7f50;
    }

    pre {
        background: rgba(0, 0, 0, 0.6);
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        margin: 20px;
    }

    code {
        font-family: 'Courier New', Courier, monospace;
        color: #2ecc71;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        padding: 20px;
        margin: 20px;
        backdrop-filter: blur(10px);
    }

    .tilted-section {
        transform: skewY(-5deg);
        margin: 20px 0;
    }

    .gradient-text {
        background: linear-gradient(45deg, #ff7f50, #6a5acd);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .button {
        display: inline-block;
        padding: 10px 20px;
        background: linear-gradient(45deg, #ff7f50, #6a5acd);
        border: none;
        border-radius: 5px;
        color: #ffffff;
        cursor: pointer;
        transition: all 0.3s ease;
    }

    .button:hover {
        animation: breathing-effect 1.5s infinite;
    }

    @keyframes breathing-effect {
        0%, 100% { box-shadow: 0 0 10px rgba(255, 255, 255, 0.5); }
        50% { box-shadow: 0 0 20px rgba(255, 255, 255, 1); }
    }

    img {
        width: 100%;
        max-width: 320px;
        height: auto;
        border-radius: 10px;
        margin: 10px;
    }

    /* 模块化布局 */
    .container {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        padding: 20px;
    }

    .module {
        background: rgba(255, 255, 255, 0.2);
        border-radius: 10px;
        margin: 10px;
        padding: 20px;
        flex: 1 1 300px;
        max-width: 400px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    }

    /* 响应式设计 */
    @media (max-width: 320px) {
        h1 { font-size: 2em; }
        h2 { font-size: 1.8em; }
        h3 { font-size: 1.5em; }
        p, ul, pre { font-size: 0.9em; margin: 10px; }
    }

    @media (max-width: 480px) {
        .container {
            flex-direction: column;
            align-items: center;
        }
    }

    @media (min-width: 768px) and (max-width: 1024px) {
        .module {
            flex: 1 1 45%;
        }
    }

    @media (min-width: 1024px) and (max-width: 1200px) {
        .module {
            flex: 1 1 30%;
        }
    }

    @media (min-width: 1200px) {
        .module {
            flex: 1 1 25%;
        }
    }

    /* 提示信息 */
    .reference {
        text-align: center;
        font-size: 1.2em;
        margin: 20px;
        color: #ffd700;
    }