Redshift evolution of the dark-energy sector for MEDE, CPL, and ΛCDM. Left: dark-energy density ρ_DE(z)/ρ_DE,0. Right: equation of state w_DE(z). The red solid line shows the best-fit MEDE model (CMB+DESI+PantheonPlus). The green solid line is the best-fit CPL parameterization, and the black dashed line is ΛCDM. The evolution is shown from the distant past ﹩z\approx 10﹩ to the asymptotic future ﹩z\to -1﹩, illustrating the distinct behaviors of each model at late times.