.game-shell-page {
    max-width: 1280px;
    margin: 0 auto;
}

.game-shell-card {
    padding: var(--sp-5);
    border-radius: calc(var(--radius-xl) + 2px);
}

.game-shell-actions {
    display: flex;
    justify-content: flex-end;
    margin-bottom: var(--sp-3);
}

.game-shell-fullscreen-btn {
    border: 1px solid var(--color-border-strong);
    background: var(--color-bg-elevated);
    color: var(--color-text);
    border-radius: 999px;
    padding: 0.55rem 1rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: transform 0.14s ease, border-color 0.14s ease, box-shadow 0.14s ease;
}

.game-shell-fullscreen-btn:hover {
    border-color: var(--color-brand-2);
    box-shadow: 0 8px 20px rgba(45, 103, 80, 0.18);
    transform: translateY(-1px);
}

.game-shell-fullscreen-btn:active {
    transform: translateY(0);
}

.game-shell-frame-wrap {
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-border);
    background: linear-gradient(160deg, #f8faf9 0%, #edf4f0 100%);
}

.game-shell-frame {
    width: 100%;
    height: min(78vh, 860px);
    border: 0;
    display: block;
    background: transparent;
}

@media (max-width: 768px) {
    .game-shell-card {
        padding: var(--sp-4);
    }

    .game-shell-actions {
        justify-content: stretch;
    }

    .game-shell-fullscreen-btn {
        width: 100%;
    }

    .game-shell-frame {
        height: 76vh;
    }

}