A full-bleed background modelling vacuum thin-film deposition on a planetary carrier: 8 mirror/lens blanks each orbit a fixed 30-degree source arc every 3.5s, each pass stepping that blank's reflectance up a notch along a real quarter-wave-stack recursion, staggered swaps keeping the batch permanently mid-cycle while a slower 14s armature ring turns underneath.
npx shadcn@latest add https://design.helpmarq.com/r/stack-step-carousel.jsonstack-step-carousel