body {
    font-family: 'Segoe UI', Arial, sans-serif;
    margin: 0;
    background: #f5f8fa;
    color: #222;
}
header {
    background: #387a5d;
    color: #fff;
    padding: 1.5em 0 1em 0;
    text-align: center;
}
nav ul {
    list-style: none;
    padding: 0;
    margin: 1em 0 0 0;
    display: flex;
    justify-content: center;
    gap: 2em;
}
nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
}
nav a:hover {
    text-decoration: underline;
}
main {
    max-width: 700px;
    margin: 2em auto;
    background: #fff;
    border-radius: 12px;
    padding: 2em;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
}
.hero {
    background: #e2f2e6;
    border-radius: 8px;
    padding: 1.5em;
    margin-bottom: 2em;
}
.facts {
    list-style: none;
    padding-left: 0;
    margin-top: 1em;
}
.facts li {
    margin-bottom: 0.5em;
}
footer {
    text-align: center;
    color: #666;
    font-size: 0.9em;
    margin: 2em 0 1em 0;
}
@media (max-width: 600px) {
    main { padding: 1em;}
    nav ul { flex-direction: column; gap: 1em;}
}