:root {
    --playground-bg: #050712;
    --playground-frame-bg: #101424;
    --playground-frame-border: #3b4a6a;
    --playground-shadow: rgba(0, 0, 0, 0.7);
}

.playground-article .post-content {
    margin-bottom: 2rem;
}

.playground-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 2rem 0 3rem;
}

.playground-frame {
    background: radial-gradient(circle at 50% 0%, #1d2640 0%, var(--playground-frame-bg) 40%, #050712 100%);
    padding: 16px;
    border-radius: 12px;
    border: 2px solid var(--playground-frame-border);
    box-shadow: 0 18px 30px var(--playground-shadow);
}

.playground-frame::before {
    content: "PIXEL HOME · PLAYGROUND";
    display: block;
    font-size: 10px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #aab7ff;
    margin-bottom: 8px;
    text-align: center;
}

#playgroundCanvas {
    width: 832px;
    height: 480px;
    max-width: 100%;
    height: auto;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    background-color: #151824;
    border-radius: 4px;
}

@media (max-width: 768px) {
    #playgroundCanvas {
        width: 100%;
        height: auto;
    }
}