Luxury bottle on still water

Nano Banana Pro prompt, 4:5 frame.

Product still life: a [bottle type] of [product name] standing on a sheet of black still water. [Flower or botanical] floating around the base, a few petals touching the glass. Single hard light from above-right making a bright highlight down the bottle edge, deep shadows elsewhere. Mirror reflection in the water. Label: [label description]. Mood: quiet, expensive, nocturnal.