Redshift evolution of the slope (S) and the UV bump (B). Left panel: S and B, color-coded by redshift (grayscale), for our full galaxy sample. Stars represent individual measurements with 1σ uncertainties derived through a bootstrapping method. The S − B parameter space is divided into four quadrants based on the median values of S and B values, indicated by dashed and dotted black lines, respectively. Sources with a flat S and small B (Calzetti-like curve) fall in the blue quadrant (Q1), those with a flat S and large B (MW-like curve) are in the green quadrant (Q2), galaxies with a steep S and small B (SMC-like curve) are in the orange quadrant (Q3), and sources with a steep S and large B occupy the red quadrant (Q4). Literature results for nearby galaxies (Salim & Narayanan 2020) are depicted as blue symbols. Right panel: Probability density distribution of redshift for galaxies in each quadrant of the S − B parameter space. The probability density is estimated using a normalized histogram (shaded; Hunter 2007) and is overlaid with a kernel density estimation (solid lines; Waskom 2021), which applies a Gaussian smoothing function to the discrete redshift values.