body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background: #f0f2f5;
    color: #333;
}

header {
    background: #003366;
    color: white;
    padding: 1.5rem 0;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 0.75rem;
}

nav a {
    color: #ffdd57;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #ffffff;
}

main {
    padding: 2rem;
    max-width: 900px;
    margin: 2rem auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

footer {
    text-align: center;
    padding: 1rem;
    background: #003366;
    color: #f0f0f0;
    margin-top: 2rem;
    font-size: 0.9rem;
    border-top: 3px solid #ffdd57;
}

h1, h2 {
    color: #003366;
}

ul li::marker {
    color: #004080;
}

section h2 {
    border-bottom: 2px solid #004080;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}