, S0mNi, semi-realistic painterly heavy strokes, loose gestural impasto brushwork, soft volumetric subsurface luminosity, lavender-violet pastel tonal palette, gold dust scatter, white fine-line scratch veil, iridescent chromatic bleed, diffused bloom, detailed background, Concept art of a vast underground city built in layered concentric levels descending into darkness, artificial cold blue-white lighting strips running along tunnel walls and platforms, dense industrial-bureaucratic architecture with pipes, walkways and stacked structures, no natural light or sky visible anywhere, a claustrophobic sense of depth looking down through multiple levels. Semi-realistic illustration, matte painting, concept art, wide vertical establishing shot, cold artificial blue-white color palette, oppressive atmosphere.awwawerrr