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      "note": "most-used chromatic color on controls, links and text"
    },
    "color.accent_strategy": {
      "source": "dom",
      "confidence": 0.6,
      "note": "hue count over chromatic colors; product mockups rendered in the DOM inflate it",
      "needs_review": true
    },
    "color.palette": {
      "source": "dom",
      "confidence": 0.9
    },
    "color.declared_accents": {
      "source": "dom",
      "confidence": 0.95
    },
    "color.dark_mode": {
      "source": "dom",
      "confidence": 0.9
    },
    "color.contrast": {
      "source": "dom",
      "confidence": 0.9
    },
    "color.gradients": {
      "source": "dom",
      "confidence": 0.85
    },
    "type.families": {
      "source": "dom",
      "confidence": 0.72,
      "note": "SF Pro (system-ui) resolved from a system stack on a macos worker; other visitors see their own system font"
    },
    "type.families[].roles": {
      "source": "dom",
      "confidence": 0.85
    },
    "type.declared_unused": {
      "source": "dom",
      "confidence": 0.95
    },
    "type.scale_px": {
      "source": "dom",
      "confidence": 0.9
    },
    "type.body_size": {
      "source": "dom",
      "confidence": 0.85
    },
    "type.display_size": {
      "source": "dom",
      "confidence": 0.85
    },
    "type.styles": {
      "source": "dom",
      "confidence": 0.8
    },
    "type.ratio": {
      "source": "dom",
      "confidence": 0.7,
      "note": "geometric fit over the scale above body size"
    },
    "type.case": {
      "source": "dom",
      "confidence": 0.75
    },
    "type.line_height": {
      "source": "dom",
      "confidence": 0.85
    },
    "type.tracking_display": {
      "source": "dom",
      "confidence": 0.85
    },
    "space.base": {
      "source": "dom",
      "confidence": 0.92,
      "note": "share of paddings/margins/gaps on the base: 0.93"
    },
    "space.scale_px": {
      "source": "dom",
      "confidence": 0.85
    },
    "space.section_padding_px": {
      "source": "dom",
      "confidence": 0.65,
      "needs_review": true
    },
    "space.density": {
      "source": "dom",
      "confidence": 0.85
    },
    "shape.radii_px": {
      "source": "dom",
      "confidence": 0.88
    },
    "shape.dominant_radius": {
      "source": "dom",
      "confidence": 0.8
    },
    "shape.border_usage": {
      "source": "dom",
      "confidence": 0.8
    },
    "depth.shadows": {
      "source": "dom",
      "confidence": 0.9
    },
    "depth.style": {
      "source": "dom",
      "confidence": 0.75
    },
    "layout.container_px": {
      "source": "dom",
      "confidence": 0.8
    },
    "layout.columns": {
      "source": "dom",
      "confidence": 0.6,
      "note": "most common grid track count; layout grids and card grids are not separated",
      "needs_review": true
    },
    "layout.nav": {
      "source": "dom",
      "confidence": 0.78
    },
    "layout.hero": {
      "source": "dom",
      "confidence": 0.6,
      "note": "geometric heuristic over the h1 and nearby media",
      "needs_review": true
    },
    "layout.section_count": {
      "source": "dom",
      "confidence": 0.6,
      "needs_review": true
    },
    "motion": {
      "source": "dom",
      "confidence": 0.8
    },
    "components": {
      "source": "dom",
      "confidence": 0.78
    },
    "stack": {
      "source": "dom",
      "confidence": 0.85,
      "note": "globals, script URLs and response headers"
    },
    "meta": {
      "source": "dom",
      "confidence": 0.99
    },
    "sections[].bbox": {
      "source": "dom",
      "confidence": 0.8
    },
    "sections[].kind": {
      "source": "dom",
      "confidence": 0.75,
      "note": "class-name and content-count heuristics; per-section confidence in sections[].confidence"
    },
    "imagery.media_share": {
      "source": "dom",
      "confidence": 0.8
    },
    "imagery.dominant_colors": {
      "source": "pixels",
      "confidence": 0.7,
      "note": "clustered screenshot pixels inside media boxes (approximate, OKLab ΔE 0.06 clusters)"
    }
  }
}