/* 基础样式 */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0D47A1, #424242);
        color: #FFFFFF;
    }
    header {
        background: rgba(0, 0, 0, 0.7);
        padding: 20px;
        text-align: center;
        font-size: 2em;
        font-weight: bold;
        color: #00FFFF;
        position: sticky;
        top: 0;
        z-index: 1000;
    }
    nav {
        display: flex;
        justify-content: center;
        gap: 15px;
        margin: 10px 0;
    }
    nav a {
        color: #FFFFFF;
        text-decoration: none;
        padding: 10px 15px;
        border-radius: 5px;
        transition: background-color 0.3s ease, transform 0.3s ease;
    }
    nav a:hover {
        background: #00FFFF;
        transform: scale(1.1);
    }
    main {
        padding: 20px;
        max-width: 1200px;
        margin: 0 auto;
        background: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    }
    h1, h2, h3 {
        font-family: 'Montserrat', sans-serif;
        color: #00FFFF;
    }
    h1 {
        font-size: 2.5em;
        text-align: center;
        margin-bottom: 20px;
    }
    h2 {
        font-size: 2em;
        margin-top: 40px;
        margin-bottom: 20px;
    }
    h3 {
        font-size: 1.5em;
        margin-top: 30px;
        margin-bottom: 15px;
    }
    p {
        font-size: 1em;
        line-height: 1.6;
        margin-bottom: 15px;
        color: #FFFFFF;
    }
    pre {
        background: rgba(0, 0, 0, 0.8);
        padding: 15px;
        border-radius: 5px;
        overflow-x: auto;
        font-size: 0.9em;
    }
    code {
        color: #00FF00;
        font-family: 'Courier New', Courier, monospace;
    }
    .card {
        background-color: rgba(255, 255, 255, 0.1);
        border-radius: 10px;
        padding: 20px;
        margin: 15px 0;
        box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, background-color 0.3s ease;
    }
    .card:hover {
        transform: scale(1.05);
        background-color: rgba(255, 255, 255, 0.2);
    }
    .image-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
        margin-top: 20px;
    }
    .image-grid img {
        width: 100%;
        max-width: 320px;
        border-radius: 5px;
    }
    footer {
        text-align: center;
        padding: 20px;
        background: rgba(0, 0, 0, 0.7);
        color: #FFFFFF;
        font-size: 1.2em;
        margin-top: 40px;
    }
    /* 响应式设计 */
    @media (max-width: 1440px) {
        main {
            padding: 15px;
        }
    }
    @media (max-width: 1200px) {
        h1 {
            font-size: 2.2em;
        }
        h2 {
            font-size: 1.8em;
        }
    }
    @media (max-width: 1024px) {
        nav {
            flex-direction: column;
            align-items: center;
        }
        .image-grid {
            flex-direction: column;
            align-items: center;
        }
    }
    @media (max-width: 768px) {
        h1 {
            font-size: 2em;
        }
        h2 {
            font-size: 1.6em;
        }
    }
    @media (max-width: 480px) {
        nav a {
            padding: 8px 12px;
            font-size: 0.9em;
        }
        .card {
            padding: 15px;
        }
    }
    @media (max-width: 320px) {
        h1 {
            font-size: 1.8em;
        }
        nav a {
            padding: 6px 10px;
            font-size: 0.8em;
        }
    }
    /* 动画效果 */
    @keyframes rotate {
        from { transform: rotateY(0deg); }
        to { transform: rotateY(360deg); }
    }
    .rotating {
        animation: rotate 10s linear infinite;
    }
    .button-animate:hover {
        background-color: #00FF00;
        transform: scale(1.1);
    }