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

header {
    background: linear-gradient(90deg, #004080, #0066cc);
    color: #fff;
    padding: 40px 20px;
}

.nav {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
    margin-bottom: 20px;
}

.nav li {
    margin: 0 15px;
}

.nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}

.nav a:hover {
    text-decoration: underline;
}

.hero {
    text-align: center;
    margin-top: 20px;
}

.hero h1 {
    font-size: 32px;
    margin-bottom: 10px;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
}

main {
    padding: 20px;
    max-width: 900px;
    margin: 0 auto;
}

section {
    margin-bottom: 40px;
}

footer {
    background: #eee;
    padding: 20px;
    text-align: center;
    font-size: 14px;
    color: #666;
}