Prompt
Aspect ratio 2:3. Minimal deep charcoal background with subtle grain and a soft vignette, keeping the upper area quiet and readable. In the lower third, slightly left of center, a rounded square cutout reveals an interior room lit by a dim blue glow where gravity runs sideways. A small 3D astronaut clings to the interior wall while tiny particles drift across the window in a diagonal direction. The cutout bevel and interior shadows emphasize depth and the gravity mismatch. Lighting is moody and controlled with a thin rim highlight along the bevel. Surfaces remain clean and unlettered, focusing on the illusion and negative space.