河岸再生：親水階段と氾濫原植生

Urban river restoration with a stepped terraced edge replacing a hard flood wall, broad concrete steps descending to the water with flood-tolerant sedges and willow planted in the lower terraces showing silt marks, the upper terrace dry and used for sitting, the water level clearly partway up the steps, city skyline behind, soft overcast light, people sitting at the water edge, eye-level composition, 28mm lens, ultra photorealistic, 8K