靛蓝隧道的线路导视

A text-free guide concept map of an urban underground pedestrian tunnel, with three-layered color strips of indigo, fog blue and light blue extending along the wall. The light strips turn at the fork in the road, showing a continuous space and a clear path when viewed from an oblique angle.

无文字的城市地下步行隧道导视概念图，以靛蓝、雾蓝和浅青三层色带沿墙面延伸，灯带在岔路口转向，俯视斜角展示连续空间与清晰路径。