Generate a massive underground SCP ...

Generate a massive underground SCP Foundation research facility for Minecraft Java Edition. 300x300 blocks, designed for serious multiplayer roleplay. Include 6 underground levels, enormous industrial blast doors, security checkpoints, keycard-controlled entrances, containment cells, laboratories, medical sector, armory, security command center, surveillance rooms, staff quarters, cafeteria, warehouses, power plant, maintenance tunnels, vehicle garage, loading docks, emergency exits, elevators and a helicopter landing pad on the surface. Use a dark realistic military-industrial SCP aesthetic with reinforced concrete, steel, glass observation windows, warning lights, pipes, vents and detailed interiors. Make the facility functional for RP with clearly separated security zones and realistic