漂浮城市岛海报

设计一座“漂浮的微型岛屿”，其形状为{{city}}市的地图轮廓/剪影，悬浮于白色云层之上。岛上需无缝融合{{city}}最具标志性的地标、建筑结构及自然景观（公园、滨水区、山丘）。将大型白色3D字母“{{city}}”融入岛屿表面或地理纹理之中。通过该城市特有的鸟类、电影级阳光、鲜明色彩、鸟瞰视角，以及逼真的阴影/反射渲染，强化整体氛围。超高清画质、超写实纹理、4K+分辨率、数字海报格式。正方形1×1构图，照片级真实感、体积光、全局光照、光线追踪。

Design a "floating miniature island" shaped like the {{city}} map/silhouette, gliding above white clouds. On the island, seamlessly blend {{city}}’s most iconic landmarks, architectural structures, and natural landscapes (parks, waterfronts, hills). Integrate large white 3D letters spelling "{{city}}" into the island’s surface or geographic texture. Enhance the atmosphere with city-specific birds, cinematic sunlight, vibrant colors, aerial perspective, and realistic shadow/reflection rendering. Ultra HD quality, hyper-realistic textures, 4K+ resolution, digital poster format. Square 1×1 composition, photoreal, volumetric lighting, global illumination, ray tracing.