UV-optical slope (S) as a function of the sSFR. Gray stars represent individual S measurements from our sample, with 1σ uncertainties estimated via bootstrapping. Black stars show the median S values for galaxies grouped by sSFR, with error bars indicating the 1σ dispersion within each bin. The solid red line shows the best-fit relation for the full sample using a power-law model (Eq. 4), and the shaded region denotes the associated uncertainty. Literature results for intermediate-z sources or stacks are shown in green (Reddy et al. 2015; Shivaei et al. 2020a; Battisti et al. 2022) and teal (Álvarez-Márquez et al. 2019), while high-z objects (Boquien et al. 2022; Markov et al. 2023) are displayed as olive and orange symbols, respectively. Error bars represent their 1σ uncertainties.