body {
    margin: 0;
    font-family: system-ui, -apple-system, sans-serif;
    background: #f6f6f6;
}

.site-header {
    background: #111;
    color: #fff;
    padding: 1rem;
    text-align: center;
}

.site-header a {
    color: #fff;
    text-decoration: none;
}

.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
}

.card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,.08);
}

.card img {
    width: 100%;
    display: block;
}

.card h2 {
    margin: .5rem;
    font-size: 1.1rem;
}

.card p {
    margin: .5rem;
    color: #555;
}

/* Desktop */
@media (min-width: 768px) {
    .grid {
        grid-template-columns: repeat(3, 1fr);
    }
}