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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f8f8f8;
    padding: 1rem;
}

header {
    background: #004080;
    color: #fff;
    padding: 1rem;
    text-align: center;
}

header nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 0.5rem;
}

main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 1rem;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1, h2 {
    margin-bottom: 0.75rem;
}

section {
    margin-bottom: 1.5rem;
}

footer {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.85rem;
    color: #666;
}

@media (max-width: 600px) {
    body {
        padding: 0.5rem;
    }
    main {
        margin: 1rem;
        padding: 0.5rem;
    }
}