健身区的地面：缓冲厚度与器材固定

Render a close view of an outdoor calisthenics rig in a park with the ground construction as the subject. Show a frame of thick powder-coated steel tube in a dark charcoal, with pull-up bars at three heights, a set of dip bars, and a low horizontal ladder, its uprights disappearing into the surface. Detail the surfacing as a poured rubber system in two colours — a darker field with a lighter inlaid ring around each upright — laid over a visible bound base at one cut edge where a repair patch reveals the layers. Show the depth handled correctly: the surface thickened locally under the bars where fall height is greatest, its top staying level while the base steps down, and a bevelled transition at the perimeter to the adjacent paving. Include a small stainless plate at one upright showing the equipment reference and inspection date. Detail wear honestly — the rubber compressed and slightly polished directly beneath the bars, chalk marks on the steel. Show raking side light. Photorealistic, technical, charcoal and dark rubber, low eye-level view.