+ standalone as siblings — AdSense creative inflates 0->280px inside in flow, pushes downstream content. Fix: div becomes position:relative + contain:layout paint style + overflow:hidden + max-height:280px; faint "Sponsored" label inside; becomes position:absolute with height:100% so its creative overlays on the div without affecting flow. Same pattern as chess/ R362 proven (CLS 0.20 -> 0). -->