A photorealistic, vertical 9:16 video shot from a high angle looking down a narrow indoor staircase with white marble steps and pale pink walls. At the top of the stairs, two glass wine bottles lie horizontally. The top bottle is filled with bright neon yellow spherical beads; the bottom bottle is filled with layered rainbow beads (red, orange, yellow, green, blue, black). The bottles are released and tumble down the stairs. Around the 3-second mark, the yellow bottle impacts a step and shatters completely, exploding into a cloud of glass shards and hundreds of scattering yellow beads that bounce realistically off the marble. The rainbow bottle continues to tumble past the debris, bouncing intact for a moment before smashing on a lower step at the 7-second mark, releasing a vibrant explosion of multi-colored beads. The camera tilts down smoothly to track the action. In the background at the bottom of the stairs, small potted plants with red flowers are visible. Lighting is bright and diffuse, highlighting the saturation of the beads against the clean white marble. Physics simulation must be accurate with realistic gravity, glass fracturing, and particle scattering.