HD profiles for the SNR models at t = 1000 years with ρ_CSM = 4  ×  10^-26   g   cm^-3. Top row shows the simulation with q_CR = 0.0, middle row – q_CR = 0.7, κ_CR = 10²⁵   cm²   s^-1; bottom row – q_CR = 0.99, κ_CR = 10²⁶   cm²   s^-1. Left panels: density (black solid line, scale at the left-hand side), ion pressure (blue dash-dotted line, scale at the right-hand side), and CR pressure (blue dashed line, scale at the right-hand side). Right panels: velocity profile (black solid line, scale at the left-hand side), electron temperature profiles (blue dashed line, scale at the right-hand side), and ion temperature profiles (dashed-dotted line, scale at the right-hand side).