Observer-frame afterglow SED of GRB 180325A. Black circles indicate the Swift X-ray data. The binned (for visual purposes) blue, green, and red data points (with 1σ errors) correspond to the UVB, VIS, and NIR VLT/X-shooter spectra, respectively. GROND observations are represented by black squares. The black solid and dashed lines show the best-fit dusty+absorbed and intrinsic spectral model, respectively. Inset: the black line shows the absolute extinction curve, and the gray shaded area materializes the associated 1σ uncertainty. The X-shooter spectra are indicated by cyan curves. The red dashed line corresponds to the mean MW curve from Fitzpatrick & Massa (2007).