body {
    font-family: sans-serif;
    margin: 20px;
    line-height: 1.6;
    background-color: #f4f4f4;
    color: #333;
}

header {
    background-color: #333;
    color: white;
    padding: 1em;
    text-align: center;
    margin-bottom: 20px;
    border-bottom: 3px solid #555;
}

nav {
    background-color: #ddd;
    padding: 0.5em;
    margin-bottom: 20px;
    border-bottom: 2px solid #ccc;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: space-around;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    padding: 0.5em 1em;
    border-radius: 5px;
    transition: background-color 0.3s ease;
}

nav ul li a:hover {
    background-color: #bbb;
}

main {
    display: flex;
    gap: 20px;
}

#summary {
    flex: 2;
    padding: 15px;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 5px;
}

#information-architecture {
    flex: 1;
    padding: 15px;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#information-architecture img {
    margin-bottom: 10px;
}

#information-architecture aside {
    margin-top: 15px;
    padding: 10px;
    background-color: #eee;
    border: 1px solid #ddd;
    border-radius: 5px;
    text-align: center;
    font-style: italic;
}

#visualization {
    flex: 1;
    padding: 15px;
    background-color: white;
    border: 1px solid #ccc;
    border-radius: 5px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#visualization img {
    margin-bottom: 10px;
}

#visualization article {
    margin-top: 15px;
    padding: 10px;
    background-color: #eee;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9em;
}

footer {
    text-align: center;
    margin-top: 20px;
    padding: 1em;
    background-color: #333;
    color: white;
    border-top: 3px solid #555;
    border-radius: 5px;
}

/* Media query for smaller screens to adjust layout */
@media (max-width: 768px) {
    main {
        flex-direction: column;
    }

    #summary,
    #information-architecture,
    #visualization {
        flex: 1;
        margin-bottom: 20px;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0.5em 0;
    }
}