Where the 46 pages agree, edges stay crisp; where they diverge, the region blurs. The sharp band at the very top is the shared header/nav; everything below it smears — that smear is the deviation.
All 46 chapters, sorted by name. Number is captured full-page height in pixels — the spread from 2,720 to 8,449 is the clearest single measure of deviation. Click any card to load it into the comparison view.