Make one web page that paints the Mona Lisa live, stroke by stroke, like a painter's time-lapse. Start from a blank canvas, block in the background landscape and sky, then the figure, the dress, the hands, the face and the smile, then fine details, with visible brush strokes that build up over each other. Paint everything in code on a canvas: no images, no photos, no external files. Show a small stroke counter, and press R to start the painting over. The whole painting should take about 40 seconds and then stay on screen. It should feel magical the moment it loads.