新纳米香蕉Pro提示结构：进化风格创意

New Nano Banana Pro prompt structure I am working on for these "evolution" style ideas. Here is one prompt: A cinematic shot of a single, winding bridge stretching into the distance. The architecture transitions seamlessly along its length: starting as Roman stone, becoming a medieval drawbridge, then a Victorian iron truss, and finally a futuristic composite material. Each section has era-appropriate travelers and weathering. Morning mist fills the valley below, with soft light breaking through clouds. 8K.