:root {
    --primary-color: #03A9F4;
    --secondary-color: #9E9E9E;
    --accent-color: #FFC107;
    --background-color: #FFFFFF;
    --text-color: #212121;
    --border-radius: 8px;
    --transition-speed: 0.3s;
}

body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: var(--background-color);
    color: var(--text-color);
    overflow-x: hidden;
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 20px 10px;
    text-align: center;
    color: white;
}

header h1 {
    font-size: 2rem;
    margin: 0;
    font-weight: bold;
}

header p {
    font-size: 1rem;
    margin-top: 5px;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    width: 100%;
    margin-top: 20px;
}

.module {
    background: linear-gradient(135deg, #f5f5f5, #ffffff);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform var(--transition-speed) ease;
}

.module:hover {
    transform: translateY(-5px);
}

.module img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    object-fit: cover;
}

article {
    background: #ffffff;
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-top: 20px;
    max-width: 1200px;
    width: 100%;
}

article h2, article h3, article h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

article pre {
    background: #f5f5f5;
    padding: 15px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.4;
}

article code {
    color: var(--accent-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

table th, table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
}

table th {
    background-color: var(--primary-color);
    color: white;
}

footer {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    color: white;
    text-align: center;
    padding: 15px;
    margin-top: 20px;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 1.5rem;
    }

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

    article {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    header p {
        font-size: 0.8rem;
    }

    footer {
        font-size: 0.9rem;
    }
}