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Chrome: Centered title "lollipop-basic · python · letsplot · anyplot.ai" in dark ink (#1A1A17), clearly readable. Y-axis label "Sales ($)" in dark ink, rotated vertically. X-axis label "Product Category" in dark ink. Tick labels (y: "0", "10,000" … "50,000"; x: 8 category names rotated 45°) in muted dark ink (#4A4A44). All text readable.
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Data: Eight lollipops in brand green (#009E73). Thin vertical stems (geom_segment) rise from baseline 0 to each value; large circular markers (geom_point) sit at the tip. Sorted ascending left-to-right: Beauty (~$9,800) through Electronics (~$45,200). Subtle horizontal-only grid lines at each y-tick interval.
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Legibility verdict: PASS — all text clearly readable against the warm off-white background.
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Dark render (plot-dark.png):
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Background: Warm near-black #1A1A17 — correct anyplot dark surface.
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Chrome: Title, axis labels, and tick labels all render in light near-white (#F0EFE8 primary, #B8B7B0 secondary). Grid lines appear as subtle dark-gray lines (#3A3A34) against the near-black surface. All text clearly readable; no dark-on-dark failures observed.
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Data: Brand green (#009E73) lollipops are identical in hue to the light render — same stems, same markers, same sorted arrangement. Green reads well on the near-black surface.
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Legibility verdict: PASS — all text clearly readable against the warm near-black background; no dark-on-dark or near-invisible elements.
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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 font sizes explicitly set; both themes render legibly. Minor
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deduction: rotated 45° x-axis labels slightly crowded at bottom, particularly
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''Home & Garden''.'
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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 text or data elements. Rotated labels prevent collision.
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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: 8 sparse data points; geom_point(size=10) produces large, prominent
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markers. Stems at size=1.5 are appropriately thin. All elements clearly
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visible in both themes.
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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: 'Single series in #009E73 with high contrast against both #FAF8F1
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and #1A1A17. CVD-safe single hue.'
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- id: VQ-05
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name: Layout & Canvas
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score: 4
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max: 4
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passed: true
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comment: Canvas gate passed (3200x1800 via ggsize(800,450)+scale=4). Data
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fills ~75% of canvas; good balanced margins. No elements cut off.
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- id: VQ-06
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name: Axis Labels & Title
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score: 2
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max: 2
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passed: true
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comment: 'X: ''Product Category'', Y: ''Sales ($)'' with unit. Title matches
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required format exactly.'
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- id: VQ-07
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name: Palette Compliance
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score: 2
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max: 2
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passed: true
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comment: 'Single series #009E73 (Imprint position 1) used correctly. Light
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bg #FAF8F1, dark bg #1A1A17 — both correct. Chrome adapts fully between
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themes. Data colors identical across both renders.'
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design_excellence:
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score: 11
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max: 20
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items:
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- id: DE-01
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name: Aesthetic Sophistication
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score: 4
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max: 8
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passed: false
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comment: Clean and correct but reads as a well-configured library default.
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Single flat-green color across all 8 lollipops; no tonal variation, no graduated
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sizing, no emphasis hierarchy. Needs more design intentionality to clear
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this bar.
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- id: DE-02
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name: Visual Refinement
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score: 4
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max: 6
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passed: false
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comment: 'Good refinement: y-only grid, no x-grid, theme_minimal removes top/right
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spines. Partially offset: axis_line re-adds visible bottom and left axis
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borders. No marker stroke or additional polish details.'
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- id: DE-03
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name: Data Storytelling
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score: 3
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max: 6
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passed: false
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comment: Ascending sort creates an implicit ranking narrative (slightly above
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default). No visual emphasis highlights the standout performers — no accented
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dot, no value label on the top bar, no color differentiation to guide the
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viewer's eye.
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spec_compliance:
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score: 15
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max: 15
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items:
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- id: SC-01
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name: Plot Type
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score: 5
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max: 5
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passed: true
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comment: 'Correct lollipop chart: geom_segment for stems, geom_point for markers.
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Vertical orientation with baseline at 0.'
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- id: SC-02
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name: Required Features
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score: 4
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max: 4
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passed: true
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comment: Thin stems from baseline to marker value, circular dots at data values,
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vertical orientation, data sorted ascending. 45° rotation handles long category
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labels.
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- id: SC-03
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name: Data Mapping
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score: 3
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max: 3
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passed: true
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comment: Categories on x-axis, sales values on y-axis. All 8 categories visible.
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