{
  "surface": "XBanner",
  "reference": { "w": 1500, "h": 500 },
  "note": "Coordinates are pixels on the 1500×500 banner X serves. Each slot is a separate on-chain listing; the zone is part of the listing address.",
  "avatarSafe": { "x": 0, "y": 330, "w": 370, "h": 170, "why": "X overlays the profile avatar on the bottom-left of the banner on desktop. Slot 07 sits partly under it; the verifier crops the served image, not the rendered profile, so verification is unaffected — visibility is." },
  "slots": [
    { "id": "01", "x": 340,  "y": 35,  "w": 650, "h": 215, "tier": "hero" },
    { "id": "02", "x": 340,  "y": 285, "w": 650, "h": 215, "tier": "hero" },
    { "id": "03", "x": 1025, "y": 35,  "w": 440, "h": 215, "tier": "standard" },
    { "id": "04", "x": 1025, "y": 285, "w": 440, "h": 215, "tier": "standard" },
    { "id": "05", "x": 35,   "y": 35,  "w": 270, "h": 90,  "tier": "strip" },
    { "id": "06", "x": 35,   "y": 160, "w": 270, "h": 90,  "tier": "strip" },
    { "id": "07", "x": 35,   "y": 285, "w": 270, "h": 90,  "tier": "strip" }
  ]
}