Gateway Portal Inside a Luminous Gear Factory

Ultra-detailed digital concept art of a colossal gateway embedded in the hull of a gear factory. The gateway's arch is forged from brass gears, steel plates, and pistons; within it glows a shimmering portal that ripples with electric teal and magenta light. Beyond the arch, a surreal landscape of rotating gears, neon lattice, and floating cogs stretches to infinity. The surrounding factory hums with conveyor belts, oil-slick floors, robotic arms, sparks, and shafts of blue and pink light cutting through steam. Rich textures include polished chrome, weathered copper, rubber hoses, and riveted iron. The scene uses cinematic lighting, strong rim light, deep depth of field, and reflections on metal surfaces. Silhouettes of workers provide scale. The overall style is vibrant digital art with a sci-fi cyberpunk vibe.