body {
    font-family: Arial, sans-serif;
    margin: 0; padding: 0;
    background: #f9f9f9; color: #333;
}
header.hero {
    background: #003366;
    color: white;
    padding: 60px 20px;
    text-align: center;
}
section {
    padding: 40px 20px;
    max-width: 800px;
    margin: auto;
}
h2 {
    color: #003366;
}
.download a {
    background: #003366;
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 5px;
}
footer {
    text-align: center;
    padding: 20px;
    background: #eee;
    margin-top: 40px;
}