* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    body {
        font-family: 'Roboto', sans-serif;
        background: linear-gradient(135deg, #1a2980, #6dd5fa, #ffffff);
        color: #ffffff;
        padding: 20px;
        min-height: 100vh;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    header {
        text-align: center;
        margin-bottom: 40px;
    }

    header h1 {
        font-size: 2.5em;
        margin-bottom: 10px;
        color: #ffffff;
        text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
    }

    header p {
        font-size: 1.2em;
        color: #f0f0f0;
    }

    .container {
        width: 100%;
        max-width: 1200px;
    }

    .section {
        margin-bottom: 60px;
    }

    .section h2 {
        font-size: 2em;
        margin-bottom: 20px;
        color: #ffffff;
        border-bottom: 2px solid #ffffff;
        display: inline-block;
    }

    .cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .card {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 15px;
        padding: 20px;
        position: relative;
        overflow: hidden;
        transition: transform 0.3s ease, background 0.3s ease;
    }

    .card:hover {
        transform: scale(1.05);
        background: rgba(255, 255, 255, 0.2);
    }

    .card img {
        width: 100%;
        border-radius: 10px;
        margin-bottom: 15px;
    }

    .card h3 {
        font-size: 1.5em;
        margin-bottom: 10px;
        color: #ffffff;
    }

    .card p {
        font-size: 1em;
        color: #dddddd;
        line-height: 1.5;
    }

    pre {
        background: rgba(0, 0, 0, 0.7);
        padding: 15px;
        border-radius: 10px;
        overflow-x: auto;
        margin: 20px 0;
        color: #00ff00;
        font-family: 'Courier New', Courier, monospace;
    }

    code {
        color: #ffeb3b;
    }

    @media (max-width: 768px) {
        header h1 {
            font-size: 2em;
        }

        .section h2 {
            font-size: 1.5em;
        }

        .card h3 {
            font-size: 1.2em;
        }

        .card p {
            font-size: 0.9em;
        }
    }

    @media (max-width: 480px) {
        body {
            padding: 10px;
        }

        header h1 {
            font-size: 1.8em;
        }

        .section h2 {
            font-size: 1.2em;
        }

        .cards {
            grid-template-columns: 1fr;
        }

        .card {
            padding: 15px;
        }

        pre {
            font-size: 0.8em;
            padding: 10px;
        }
    }