body {
        font-family: 'Open Sans', sans-serif;
        margin: 0;
        padding: 0;
        background: linear-gradient(to bottom, #0A192F, #1E2A47);
        color: white;
        line-height: 1.6;
    }
    header {
        text-align: center;
        padding: 40px 20px;
        background: linear-gradient(135deg, #0A192F, #0D2538);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }
    header h1 {
        font-family: 'Roboto', sans-serif;
        font-size: 2.5rem;
        color: #64FFDA;
        margin: 0;
    }
    header p {
        font-size: 1.1rem;
        margin-top: 10px;
        color: #BFCDE0;
    }
    .container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        padding: 20px;
    }
    .card {
        background: #1E2A47;
        border-radius: 10px;
        padding: 20px;
        box-shadow: 0 6px 12px rgba(0, 0, 0, 0.2);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.3);
    }
    .card img {
        width: 100%;
        height: auto;
        border-radius: 8px;
        margin-bottom: 15px;
    }
    .card h3 {
        font-family: 'Roboto', sans-serif;
        font-size: 1.5rem;
        color: #64FFDA;
        margin-bottom: 10px;
    }
    .card p {
        font-size: 1rem;
        color: #BFCDE0;
    }
    pre {
        background: #0A192F;
        padding: 15px;
        border-radius: 8px;
        overflow-x: auto;
        font-family: 'Courier New', monospace;
        font-size: 0.9rem;
        color: #64FFDA;
    }
    code {
        color: #FFC700;
    }
    ul {
        list-style: none;
        padding: 0;
    }
    li {
        background: #1E2A47;
        margin: 10px 0;
        padding: 10px;
        border-radius: 5px;
        color: #BFCDE0;
    }
    a {
        color: #64FFDA;
        text-decoration: none;
        transition: color 0.3s ease;
    }
    a:hover {
        color: #FFC700;
    }
    @media (max-width: 768px) {
        header h1 {
            font-size: 2rem;
        }
        .card {
            padding: 15px;
        }
        pre {
            font-size: 0.8rem;
        }
    }
    @media (max-width: 480px) {
        header h1 {
            font-size: 1.8rem;
        }
        .container {
            grid-template-columns: 1fr;
        }
        pre {
            font-size: 0.7rem;
        }
    }