Use the provided white-background product image as the locked reference. Preserve the cylindrical clear Gris Dior perfume bottle exactly: glossy black ribbed cap, pale lilac liquid, white front label, label placement, product branding, upright front view, glass geometry, and proportions.
Create a dramatic vertical fragrance poster in a dark indigo-violet botanical setting. Surround the bottle with freshly arranged deep-purple iris petals covered in dew, with a subtly reflective dark surface and soft violet haze. Use clearly different flower shapes, petal positions, background light, and reflection pattern from the source while keeping the same luxurious nocturnal mood.
Constraints: the perfume bottle is the only hero product; no added poster text, watermark, border, people, hands, duplicate bottles, altered cap, altered label, or altered liquid color.
