Geometries considered in this work and the main spectral components produced close to the black hole. (a) Geometry considered in models 1 and 2. (b) Geometry with an additional warm corona considered in model 3. (c) “No-corona” geometry considered in model 4. In panels (a) and (b), the hot corona is shown as a uniform medium fully covering the disk surface for illustrative simplicity. However, the covering factor inferred from our fits is f_sc ≲ 0.5, implying that the actual geometry is more likely characterized by localized active regions covering ≲50% of the disk surface.