Sprott 2014 dissipative–conservative — dx/dt=y+a x y+x z, dy/dt=1−2x²+b y z, dz/dt=c x−x²−y². Classic a=2 (chaotic IC≈(2,0,0); torus at (1,0,0)). Distinct from sprott-jerk / Cases A–U. RK4. Gold trail, cap 650. RM = settled silhouette.