First row: compatible binary-mass combinations predicted by the analytic drag-in-the-wind model ( Appendix B), with the representative binary model (M₁ = 6.9 M_⊙, M₂ = 1.4 M_⊙) studied throughout this work indicated by the orange star. Symbols × and • denote models whose F_d are limited by Equation (B4) entirely or partially during the evolution, respectively. Second row: the evolution of the orbit, total luminosity (defined in Appendix B), wind mass-loss rate, and cumulative mass loss of the representative simulation.