Use case: precise-object-edit
Input image 1 is the target steel-blue light halo with real alpha transparency. Preserve its ellipse shape, steel-blue/pearl hue, upper-left bright arc and pure-light appearance. Change only composition and edge clearance: scale the ENTIRE existing halo including all glow down to 65% of its current size, center it within a same-size square canvas, and leave at least 15% fully transparent empty margin at EVERY side. The halo and diffuse glow must fade completely to alpha zero well before the outermost edge. No glow touching or clipping any canvas edge. Keep real graded alpha, don't add any opaque backdrop, shadows, checkerboard, additional lights, colors, objects, lettering or material rim. Output one transparent PNG.
