body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}

header {
    background-color: #008080;
    color: white;
    padding: 2rem;
    text-align: center;
}

.logo {
    max-width: 150px;
    margin-bottom: 1rem;
}

.update-date {
    font-style: italic;
    font-size: 0.9rem;
}

main {
    padding: 2rem;
    max-width: 800px;
    margin: auto;
    background-color: white;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

h1, h2 {
    color: #005f5f;
}

ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

a {
    color: #008080;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}