body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
    color: #222;
}
header {
    background: #2d8cf0;
    color: #fff;
    padding: 1.5rem 2rem;
}
header h1 {
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
}
nav a {
    color: #fff;
    margin-right: 1.5rem;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
main {
    max-width: 800px;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
section {
    margin-bottom: 2rem;
}
section h2 {
    color: #2d8cf0;
}
footer {
    text-align: center;
    padding: 1rem;
    background: #eee;
    color: #888;
    border-top: 1px solid #ddd;
    margin-top: 2rem;
}