Comparison of the synthetic intensity profiles with ALMA continuum. Crosses show ALMA data adopted from Houge et al. (2024), spaced according to the beam sizes; shaded regions indicate the rms error. Solid lines represent the best-fit retreating snowline model, while dotted lines correspond to the best-fit static model. Enhanced emission toward the inner regions arises likely from intense viscous heating (Alarcón et al. 2024), which is not accounted for in the model.