MIRI-MRS spectra extracted from five regions (top to bottom): full Ch 1A mosaic (red), nucleus (magenta), circumnuclear region (violet), PAH ring (yellow), and PAH-deficient region (green). Extraction regions are shown in the right panel of Fig. 3. Black lines indicate the total best-fit models from the MIR decomposition tool (Donnan et al. 2024); blue and grey lines show the fitted continua (stellar + AGN) and PAH components, respectively. Fit residuals are displayed below each panel; the reduced χ² is reported below the legend.