A calm, professional healthcare-education image: soft diffused morning light across a contemporary rehabilitation clinic, out-of-focus foreground of a physical therapy treatment table with charcoal upholstery, brushed metal, neatly arranged resistance bands and foam rollers in cool muted blue-gray tones. No human figures. Clean, evidence-based, reassuring, editorial photographic style with shallow depth of field. Dark, moody but trustworthy atmosphere suitable for a dark overlay hero.