Observational context and spectral evolution. (a) SDO/AIA 1700 Å image near the flare peak, marking the SUSI and analyzed-pore fields of view. (b) SUSI 325 nm slit-jaw image; the box marks the analyzed pore and the yellow symbol identifies a spectral-sampling pixel within the strong-response region. (c) Tracked line-core intensities, ordered from the weakest to strongest flare enhancement. (d) Normalized spectra at the marked pixel in panel (b) at the sequence start, pre-event interval, flare peak, early and late post-event intervals, and sequence end. Vertical markers identify the eight analyzed lines. Line centers are determined from these processed spectra, while intensities are sampled on the original scale.