城市跑酷连续跟拍：快速但保持动作可读性

Follow a fast parkour runner moving through a dense modern city with athletic confidence. Use a fluid tracking camera that stays close to the subject while weaving through rails, walls, and stair landings. The scene should feel kinetic but readable, with clear momentum, grounded body motion, and a sense of speed. Keep the shot continuous, urban, and cinematic rather than chaotic.