Relative contributions of shocks (purple), CSs (green), and non-steep gradients (white) to chromospheric dissipative heating (Q_diss = Q_ν + Q_η, red and blue, respectively). Left: Profile of the relative contributions to atmospheric dissipative heating as a function of height. At each height, we sum Q_ν + Q_η over a selected subset of the domain (shocks, CSs, or the intersection of both) and compare it to the sum over the entire horizontal extent at that height. Profiles are averaged horizontally in space and over 1 solar hour in time. The vertical dashed line indicates the top of the CZ. Right: Same contributions, vertically averaged over the chromospheric extent (0.6 ≤ z ≤ 2.57 Mm), with the outer ring indicating the physical processes involved (shocks, CSs, or neither), and the inner ring explicating the associated dissipation mechanisms (viscous vs ohmic). Hatched segments indicate the contributions of regions where both shocks and CSs overlap.