Optical/near-IR SEDs of nova V339 Del during the fireball stage and beyond. Denotation of lines and points is the same as in Fig. 1. In addition, the dotted line in the third panel from the top represents a remnant of the WD shell and the grey line in the bottom panel denotes the dust component (Sect. 3.2.2). The nebular continuum during the fireball stage (top two panels) was only roughly estimated from the Hα flux for comparison.