body {
    margin: 0;
    background: #111827;
    font-family: Arial, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    zoom: 0.8;
}

#game-container {
    border: 2px solid #2d3748;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 24px rgba(0, 0, 0, 0.35);
}

#desktop-only-notice {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.96);
    color: #f8fafc;
    padding: 32px;
    box-sizing: border-box;
    z-index: 9999;
    align-items: center;
    justify-content: center;
    text-align: center;
}

#desktop-only-notice .notice-panel {
    max-width: 420px;
    padding: 28px 24px;
    border: 1px solid #334155;
    border-radius: 18px;
    background: #111827;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

#desktop-only-notice h1 {
    margin: 0 0 12px;
    font-size: 28px;
}

#desktop-only-notice p {
    margin: 0;
    font-size: 18px;
    line-height: 1.5;
    color: #cbd5e1;
}

@media (max-width: 1024px),
(pointer: coarse) {
    body {
        zoom: 1;
    }

    #game-container {
        display: none;
    }

    #desktop-only-notice {
        display: flex;
    }
}

@media (min-width: 1920px) {
    body {
        zoom: 0.9;
    }
}