The canvas has a gradient at (0,0) and (200,0) — dark green fading to white. A smaller circle at (200,50), same radius, darker green. A third shape, an arc with endpoints on the x-axis, filling from top-left to bottom-right, blending shades of red-orange until saturation drops to 0.5. The balance indicator: a line stretching leftward from (400,100) at angle π/2; it becomes straight when imbalance hits 1, never fully resolves below zero regardless of amplitude.