(a) Empirical PDFs of the period P for surviving binaries at 0 Myr (solid) and 0.6 Myr (dashed). The same binning is applied to all models, and the plotted histograms show, for each bin, the median value across all clusters. The two distributions are nearly indistinguishable. (b) Histogram of quantile shifts, where the bar heights represent the median values across all clusters.