台阶鼻口下的灯具位置

提示词

按给定照明节点表现台阶鼻口下的灯具与相邻踏面，灯槽、踏步和光向按资料，不把亮线浮在踏步前方。

Use the supplied lighting detail to show a luminaire beneath a step nosing and its neighboring tread, following documented recess, steps, and light direction rather than floating a bright line in front.