咖啡館新品海報（日式極簡風）

prompt

Design a 2:3 vertical poster in strict Japanese minimalist style for {cafe_name} introducing {drink_name}. Composition: 70 percent negative space on off-white washi paper texture; one small, perfectly lit photographic coffee cup placed on the lower-right third following asymmetric balance. A single thin vertical line of typography carrying {cafe_name} runs along the left edge. Set {drink_name} small in a light sans-serif near the cup, with {flavor_notes} as two understated lines beneath, and place {price} inside a tiny red circular hanko-style stamp. Muted palette: warm white, charcoal grey, one accent of deep matcha green. No clutter, no gradients — museum-caption restraint throughout the entire layout.