A De Stijl plane recursively cut into rectangles by a fragment binary-space partition: at each level a cell hashes whether to split, picks its longer axis, and divides at a randomised seam, so the layout is irregular — never a uniform grid. Leaves fill with Mondrian primaries (red, blue, yellow, off-white) framed by bold black gutters. A slow churn re-seeds the hashes so cells continuously split, merge and re-colour, and the maximum depth pulses so regions bloom finer and coarser on a loop. The pointer draws finer subdivision toward the cursor, scrolling raises the depth ceiling, and a press recomposes the entire canvas at once.