DESIGN BRIEF: Heritage neon alleys photograph as glare, reflection, and unreadable shopfront type — three things Kachni contour cannot absorb without breaking Mithila double-outline discipline. The translation problem was how Kolkata night-street energy reads as folk grammar: oblong lantern signs become saturated magenta-gold glow cells with interior cross-hatch bloom instead of LED realism; the pantograph wire lattice above the street becomes parallel black hatching on cream sky — aerial threshold geometry the way classical panels used vine scrolls across the top register. Horizontal-bilateral symmetry keeps the tram centred on the track axis with mirrored building columns and Ambassador cars so the scene reads as one balanced register, not a skewed street photograph dropped inside a decorative frame. I kept the vintage tram frontal rather than three-quarter because Kayastha Kachni panels treat vehicles as flat icon silhouettes with window registers and floral medallions — the circular flower on the cowcatcher is deliberate folk insertion, not transit livery. Foreground lotus crest and paired birds restore bottom threshold grammar beneath the rails; flying birds and wire grid complete the aerial band above. Mustard gold and magenta pink are the neon palette translated into pigment — no hex glow simulation, just saturated fill bounded by lampblack lines.