Clean professional engineering software interface screenshot for pillow plate heat exchanger thermal analysis. A CAD/CFD application UI showing a 3D pillow plate heat exchanger model with a teal-and-navy color-mapped thermal simulation result (temperature gradient overlay), a left side panel with parameter inputs and menu, a results data table, and toolbars. Technical, precise, European engineering software aesthetic. Navy, teal, white and light grey palette. Photographic-realistic UI render, not illustrated or cartoonish.