Building Block Castle in Reverse-Flow Hourglass

Full prompt

Surreal conceptual still life featuring a sleek minimalist glass hourglass. Inside the lower bulb rests a miniature toy building block castle complete with tiny figures and trees instead of ordinary sand. The precise moment of flipping the hourglass is frozen in time: the colorful blocks dissolve into tiny particles, defying gravity as they flow upward through the narrow glass neck to reconstruct the structure above. Crystal-clear refraction through smooth glass highlights the vibrant miniature world, contrasted against a child's warm fingertips holding the hourglass edges, aspect ratio 9:16.