Premium minimal flat-vector travel poster for [CITY_NAME], 3:4 vertical. Create a fresh, elegant city-specific travel illustration with the city’s iconic landmark as the main focus, plus local transport, everyday lifestyle moment, native nature detail, and unique composition. Japanese stationery aesthetic, luxury sticker illustration, clean thin outlines, flat colors, soft minimal shapes. Place [CITY_NAME] in the upper-left with premium typography and a short refined caption. Use only 3–6 small natural figures doing city-specific activities. Palette: powder blue, sky blue, cream, beige, sage green with tiny blush accents. Calm, airy, high-end postcard style. No realism, no watercolor, no gradients, no heavy shading, no crowded scene, no generic tourist collage, no repeated layouts.