Spectra extracted from the same four sky regions as in Fig. 6. The gamma-ray spectrum from the π⁰-decay (green solid line) is compared with the ν spectrum (summed over all flavors) attributable to π^±-decay (orange dashed line). The prompt gamma-ray spectrum expected from DM annihilation in W⁺W⁻ (with mass M_χ = 30 TeV and cross-section ⟨σv⟩ = 3 × 10²⁷ cm² s⁻¹) is shown with a red solid line. The IC from DM secondary leptons is also shown with a red dashed line.