body{
    margin:0;
    font-family:system-ui,sans-serif;
    background:#f5f6fa;
}
h1{
    text-align:center;
    padding:16px;
    margin:0;
}
.grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:12px;
    padding:12px;
}
.card{
    display:block;
    text-decoration:none;
    color:#111;
    background:#fff;
    border-radius:14px;
    overflow:hidden;
    box-shadow:0 4px 12px rgba(0,0,0,.08);
}
.card img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
    display:block;
}
.card h3{
    font-size:16px;
    padding:10px;
    margin:0;
}
.game-frame{
    width:100%;
    height:80vh;
}
.game-frame iframe{
    width:100%;
    height:100%;
    border:0;
}
@media (min-width: 768px){
    .grid{
        grid-template-columns:repeat(4,1fr);
    }
}