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- Both before and after dots have equal visual weight — no size or opacity encoding
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that reflects magnitude of improvement to guide the viewer's eye
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image_description: |-
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Light render (plot-light.png):
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Background: Warm off-white consistent with #FAF8F1 — not pure white, correct anyplot surface
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Chrome: Title "Employee Satisfaction · dumbbell-basic · javascript · d3 · anyplot.ai" in bold dark text, clearly readable. Category labels (Research, Engineering, Product, IT Support, Design, Operations, Marketing, Customer Success, HR, Finance) on y-axis in dark text — all readable. X-axis tick labels (50, 60, 70, 80, 90, 100) in dark text — readable. X-axis label "Satisfaction Score (0–100)" and legend labels "Before Policy" / "After Policy" all clearly visible against the light background.
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Data: Green (#009E73, Imprint palette[0]) dots for "Before Policy"; lavender (#C475FD, Imprint palette[1]) dots for "After Policy"; thin gray connecting lines at 40% opacity. Chart sorted by improvement with Research at top (+22 pts) and Finance at bottom (+7 pts). Dots have pageBg stroke halos for clean separation.
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Legibility verdict: PASS
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Dark render (plot-dark.png):
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Background: Warm near-black consistent with #1A1A17 — not pure black, correct anyplot dark surface
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Chrome: Title renders as light text on dark background — clearly readable. Category labels, x-axis tick labels, x-axis label, and legend text all flip to light/white text — no dark-on-dark issues detected. Gridlines remain subtle against the dark surface.
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Data: Data colors are identical to the light render — green (#009E73) and lavender (#C475FD) dots maintain the same appearance. Both colors read well on the dark surface. Connecting lines visible as mid-gray.
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Legibility verdict: PASS
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criteria_checklist:
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visual_quality:
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score: 29
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max: 30
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items:
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- id: VQ-01
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name: Text Legibility
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score: 7
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max: 8
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passed: true
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comment: All text readable in both themes; tick and category labels at 13px
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CSS are slightly below the d3 guide's 14px recommendation but remain readable
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at canvas size
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- id: VQ-02
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name: No Overlap
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score: 6
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max: 6
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passed: true
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comment: No overlapping elements in either render; generous band padding prevents
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category label collisions
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- id: VQ-03
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name: Element Visibility
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score: 6
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max: 6
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passed: true
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comment: r=10 dots are prominent for sparse 10-point data; connecting lines
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at 40% opacity visible but non-distracting
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- id: VQ-04
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name: Color Accessibility
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score: 2
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max: 2
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passed: true
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comment: Imprint palette positions 0 and 1 — both CVD-safe per palette design
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