/* 引入Google字体 */
    @import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&family=Roboto&display=swap');
    body {
        margin: 0;
        padding: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1e0066, #8700ea);
        color: #ffffff;
    }
    header {
        width: 100%;
        height: 100vh;
        background: radial-gradient(circle, rgba(255,87,34,1) 0%, rgba(135,0,234,0) 70%);
        display: flex;
        justify-content: center;
        align-items: center;
        animation: aurora-move 15s linear infinite;
        position: relative;
    }
    @keyframes aurora-move {
        0% { background-position: 0% 50%; }
        50% { background-position: 100% 50%; }
        100% { background-position: 0% 50%; }
    }
    .cta-button {
        background-color: #00bfff;
        color: #ffffff;
        padding: 15px 30px;
        border: none;
        border-radius: 25px;
        font-size: 1.2em;
        cursor: pointer;
        transition: background-color 0.3s ease, transform 0.3s ease;
        text-decoration: none;
        font-family: 'Poppins', sans-serif;
    }
    .cta-button:hover {
        background-color: #0093cc;
        transform: scale(1.1);
    }
    main {
        padding: 50px 20px;
        max-width: 1200px;
        margin: 0 auto;
    }
    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 30px;
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        color: #ffffff;
    }
    article h2 {
        font-family: 'Poppins', sans-serif;
        font-size: 2em;
        margin-bottom: 20px;
        text-align: center;
    }
    article h3 {
        font-family: 'Poppins', sans-serif;
        font-size: 1.5em;
        margin-top: 30px;
        margin-bottom: 15px;
    }
    article p {
        line-height: 1.6;
        font-size: 1em;
    }
    article pre {
        background: #2e2e2e;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin: 20px 0;
    }
    article code {
        color: #ff9f40;
        font-family: 'Courier New', Courier, monospace;
    }
    .example-section {
        margin-top: 50px;
    }
    .example-section h2 {
        text-align: center;
        margin-bottom: 30px;
    }
    .carousel {
        display: flex;
        overflow-x: scroll;
        gap: 20px;
        padding-bottom: 20px;
    }
    .carousel img {
        width: 320px;
        height: 320px;
        border-radius: 10px;
        object-fit: cover;
        flex-shrink: 0;
    }
    .card-container {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        justify-content: center;
        margin-top: 30px;
    }
    .card {
        background: rgba(255, 255, 255, 0.2);
        border-radius: 15px;
        padding: 20px;
        width: 300px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.3);
        transition: transform 0.3s ease;
    }
    .card:hover {
        transform: scale(1.05);
    }
    .card img {
        width: 50px;
        height: 50px;
        margin-bottom: 15px;
    }
    .circle-chart {
        width: 100px;
        height: 100px;
        background: conic-gradient(#ff9f40 0%, #ff9f40 50%, #ffffff 50%);
        border-radius: 50%;
        margin: 0 auto 15px auto;
    }
    footer {
        background: rgba(0, 0, 0, 0.5);
        padding: 20px;
        text-align: center;
        font-size: 0.9em;
        position: relative;
        bottom: 0;
        width: 100%;
    }
    a {
        color: #00bfff;
        text-decoration: none;
    }
    a:hover {
        text-decoration: underline;
    }
    @media (max-width: 768px) {
        .card-container {
            flex-direction: column;
            align-items: center;
        }
        .carousel {
            flex-direction: column;
            align-items: center;
        }
    }