SVG gallery (drag or click)
Layers (z-order: top = front)
Drag a layer on the canvas to move it. The canvas = the whole matrix screen.
Phone canvas: a new element is placed automatically. Drag it on the phone canvas to adjust - from then on it moves independently (Phone: auto re-links it).
Photos import as Image (full color) - real colors, per-layer Bitmap resolution. SVG/PNG silhouettes use Source: alpha with a per-layer color (light/dark); for a photo silhouette switch to Dark/Light + Threshold.
Save project = lossless (originals + transforms, for further work). Export mask = light mask.json for landing/matrix-paradise. Both carry the desktop and the phone layout.