Create a 600 by 600, three-second onboarding animation. Put three circles at x 150, 300, and 450, y 300, and connect them with thin pale lines. Reveal the first circle at zero seconds, the second at 0.7 seconds, and the third at 1.4 seconds. Scale each from 70 to 100 percent while fading in over 0.35 seconds. Grow each connecting line from its left edge just before the next step appears. Hold the complete diagram after two seconds. Use purple, lilac, and green. Keep all layers editable and export a project backup.