body {
        margin: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #0A1F44, #6C5B7B);
        color: #FFFFFF;
        overflow-x: hidden;
    }
    header {
        text-align: center;
        padding: 50px 20px;
        background: rgba(10,31,68,0.8);
        position: relative;
        z-index: 2;
    }
    header h1 {
        font-size: 2.5em;
        margin: 0;
        color: #FFFFFF;
    }
    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 20px;
        padding: 20px;
        position: relative;
        z-index: 2;
    }
    .card {
        background: rgba(108, 91, 123, 0.8);
        border-radius: 15px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.3);
        padding: 20px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .card:hover {
        transform: scale(1.05);
        box-shadow: 0 8px 25px rgba(0,0,0,0.5);
    }
    .card img {
        width: 100%;
        border-radius: 10px;
    }
    .card h3 {
        margin-top: 15px;
        font-size: 1.5em;
        color: #FF6F91;
    }
    .card p {
        font-size: 1em;
        line-height: 1.6;
        color: #DDEEFF;
    }
    pre {
        background: #0A1F44;
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        font-size: 0.9em;
        color: #33FFFC;
    }
    footer {
        text-align: center;
        padding: 20px;
        background: rgba(10,31,68,0.8);
        position: relative;
        z-index: 2;
        font-size: 1em;
    }
    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }
        .card h3 {
            font-size: 1.2em;
        }
    }
    /* 动态星云粒子效果 */
    .particle {
        position: absolute;
        width: 2px;
        height: 2px;
        background: white;
        border-radius: 50%;
        animation: twinkle 5s infinite;
    }
    @keyframes twinkle {
        0%, 100% { opacity: 0; }
        50% { opacity: 1; }
    }