Representative CR trajectories with r_L/L_box = 8 × 10⁻³ (r_L = 10 cells) overlaid on the normalized magnetic fluctuation δB/〈B〉 in a slice through each particle’s initial position. Blue arrows indicate the in-plane magnetic-field direction. The left and right columns show decoupled and strongly coupled two-fluid turbulence, respectively; the upper and lower rows show M_s ≃ 1 and M_s ≃ 10, with M_A ≃ 1 in all panels. Trajectory color denotes tΩ, and green and red markers indicate the initial and final positions.