body {
    font-family: "Microsoft YaHei", sans-serif;
    margin: 0;
    padding: 0;
    background: #f9f9f9;
    color: #333;
}

header {
    background-color: #005599;
    color: white;
    text-align: center;
    padding: 1rem;
}

nav a {
    color: white;
    text-decoration: none;
    margin: 0 10px;
    font-weight: bold;
}

main {
    padding: 2rem;
    text-align: center;
}

.hero {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

footer {
    text-align: center;
    padding: 1rem;
    background: #005599;
    color: white;
    margin-top: 2rem;
}