body {
        margin: 0;
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #003366, #6a11cb);
        color: #ffffff;
    }
    header {
        padding: 20px;
        text-align: center;
        background: rgba(0, 51, 102, 0.8);
    }
    header h1 {
        margin: 0;
        font-size: 2em;
        color: #6a11cb;
    }
    .container {
        display: flex;
        flex-wrap: wrap;
        padding: 20px;
    }
    .left, .right {
        flex: 1 1 300px;
        padding: 20px;
    }
    .left {
        background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center;
        background-size: cover;
    }
    .right {
        background: url('https://images.gptkong.com/demo/sample2.png') no-repeat center;
        background-size: cover;
    }
    article {
        background: rgba(255, 255, 255, 0.1);
        padding: 20px;
        border-radius: 10px;
        margin-top: 20px;
    }
    article h2, article h3, article h4 {
        color: #ffd700;
    }
    pre {
        background: #222;
        padding: 10px;
        border-radius: 5px;
        overflow-x: auto;
    }
    table {
        width: 100%;
        border-collapse: collapse;
        margin: 10px 0;
    }
    table, th, td {
        border: 1px solid #6a11cb;
    }
    th, td {
        padding: 10px;
        text-align: left;
    }
    .data-section {
        background: rgba(0, 0, 51, 0.8);
        padding: 20px;
        border-radius: 10px;
        margin-top: 20px;
    }
    .data-section h2 {
        color: #ffd700;
    }
    .data-section ul {
        list-style: none;
        padding: 0;
    }
    .data-section li {
        background: #6a11cb;
        margin: 5px 0;
        padding: 10px;
        border-radius: 5px;
    }
    @media (max-width: 768px) {
        .container {
            flex-direction: column;
        }
    }