The four frames of the X-ray landing chapter (webp, converted from the founder's Gemini renders 2026-07-22):
  frame-1-kitchen.webp   photoreal kitchen
  frame-2-xray.webp      X-ray full kitchen
  frame-3-sink.webp      X-ray sink close-up
  frame-4-cabinet.webp   photoreal open cabinet
The landing section hides itself if frame-1 is missing.
