高级极简平面矢量城市旅游海报

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.

为[CITY_NAME]创作的高级极简平面矢量旅游海报，3:4垂直比例。创作一张清新、优雅且具有特定城市特色的旅游插画，以该城市的标志性地标为核心焦点，并加入当地交通、日常生活瞬间、原生自然细节以及独特的构图。日系文具美学，奢侈贴纸插画，干净的细轮廓，平面色彩，柔和的极简形状。将[CITY_NAME]放在左上角，配合高级排版和简短精致的标题。仅使用3-6个进行城市特定活动的小型自然人物。调色板：粉蓝色、天蓝色、奶油色、米色、鼠尾草绿，并带有极小的粉红点缀。冷静、通透、高端明信片风格。不含写实主义，不含水彩，不含渐变，不含重阴影，不含拥挤场景，不含通用的游客拼贴，不含重复布局。