Restrained luxury launch poster

GPT Image 2.5 prompt, 3:4 frame.

A 3:4 launch poster for [product] in a calm, restrained luxury style. Muted palette of [colours]. Product centred small with lots of negative space, one botanical element, soft daylight. Headline "[name]" in a thin elegant serif, a one-line tagline "[tagline]" and the launch date "[date]" in small caps.