Sun Room Cat Playground

Rim highway (11 in lanes, exits at BOTH ends, two passing bays), diagonal T-beam bridge, 18 in jump gap with onward route, mid-depth step platforms, tunnel with mid escape hole, raised + floor hides with doors on different faces, two separated top perches, long 26-degree carpet ramp plus block stairs, knee braces, bay diagonals, and sole plates. Floor: scratch tray, grass tray, water, cool tile. Window bird feeder as the destination.