A forgotten underground bicycle repair shop beneath neon-soaked signage, a weathered mechanic in oil-stained coveralls hand-assembles a custom hover-bike frame while holographic schematics flicker above workbench, rusted tools hang from pegboard walls, single fluorescent light hums over scattered circuit boards, crimson and electric teal sparks from welding torch illuminate concerned face, low-angle shot capturing analog craftsmanship in high-tech underworld, Blade Runner atmosphere meets custom vehicle modification, hyper-detailed 8k resolution, cinematic composition