Maxwell–Bloch — ẋ=−κ x+y, ẏ=−γ y+x z, ż=−γ∥(z−λ)−x y. Classic λ=30 κ=1 γ=0.5 γ∥=0.1. Distinct from laser-lorenz.html. RK4. Gold trail, cap 650. RM = settled silhouette, no animate-on.