X-ray spectra extracted separately in the high-mode (top panel) and low-mode (bottom panel) intervals, along with the best-fitting models (see Appendix A for details). Top panel: Various shades of blue denote the three EPIC-pn spectra, while different shades of red represent the spectra obtained with the two EPIC-MOS cameras. Light and dark green indicate NuSTAR spectra. Bottom panel: As discussed in the text, the low-mode spectrum includes only data for the two EPIC-MOS cameras.