Spectropolarimetric evolution of GRB 220107A: Time-resolved spectropolarimetric analysis of GRB 220107A. Top panel: Konus-Wind light curve in the 20–1300 keV band (red) with flux evolution (orange-red) shown on the right axis. Shaded regions indicate the two main episodes of the burst. Vertical dashed gray lines mark finer time bins used for spectral analysis using Konus-Wind data. Second panel: Evolution of E_p with time, showing the peak energy of the emission in each time bin. Third panel: Evolution of the low-energy spectral index α with synchrotron slow- (α = −2/3) and fast-cooling (α = −3/2) reference lines indicated by dashed lines. Pink points indicate the PF measured with AstroSat CZTI, including upper limits. Bottom panel: Evolution of the blackbody temperature kT for models including a thermal component. The combination of spectral and polarimetric measurements highlights the hard-to-soft evolution of the first to second episode and provides constraints on the emission mechanisms of GRB 220107A.