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No.226 · Commerce· New

Fit Compare

A product drawn at true scale against something the shopper already knows the size of: a bank card, a phone, a hand, an A4 sheet, a 13-inch laptop. Real units, a scale bar and a plain answer to “will it fit?”, turning the object if that helps.

The prompt

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Written for the variant you picked above: Light

Build a size comparison for a product page (a fictional 'Muttrah tech pouch' in Small 120×190, Medium 180×250 and Large 260×340 mm). Everything is in millimetres; the SVG viewBox is in millimetres too, so both shapes are at true relative scale. Layout: a warm 14px-radius panel in Archivo. Header: 'How big is the Muttrah tech pouch?' and two segmented controls, cm/in and Overlay/Side by side. Body (two columns from 46rem): a stage card with the reference drawn as a flat warm-grey silhouette with a little detail (phone with screen and speaker slot, card with chip, A4 with a folded corner and text lines, laptop lid with webcam, a simple hand), standing on a hairline floor with the item from the same corner as a dashed terracotta outline over a light wash. The item is dimensioned in mono: width under the floor with end ticks, height up the right side. A round scale bar near a quarter of the stage ('10 cm', '2 in') sits top left. A legend under it. Side column: size chips with their dimensions, reference chips, and a live read-out: the fit answer in bold green or red ('13″ laptop doesn't fit: 4.4 cm too wide', 'Phone fits inside, with 10.3 cm to spare', turning it if that is the only way) and '1.6× as tall and 2.5× as wide as the phone'. Selected variant — Light (light): Palette for this theme (Light): --fitc-bg #f6f3ee; --fitc-chip #ffffff; --fitc-focus #c2552e; --fitc-ink #22201c; --fitc-item #c2552e; --fitc-item-fill rgb(194 85 46 / 0.12); --fitc-line rgb(34 32 28 / 0.11); --fitc-muted #77716a; --fitc-no #b23a2a; --fitc-ok #2c7a4b; --fitc-ref #d9d3c9; --fitc-ref-d #c9c1b5; --fitc-ref-s #b3a99a; --fitc-stage #fffdf9. Treat these as the root colour tokens, one value per role, and name them to suit your code. Select it with the theme option set to "light". Keep every dimension, spacing value, state and motion from the brief unchanged, and keep text at 4.5:1 contrast or better on these surfaces. This selection takes precedence over references to other themes or options in the general brief. Implement this selected appearance; do not add a variant picker or alternative appearances unless requested. Implementation requirements: Use React and TypeScript. Keep the component self-contained, with uniquely scoped CSS and no animation libraries. Include required imports, styles and font setup in the result. Interaction: Size and reference chips are native radio groups (arrow keys move within each). Unit and layout toggles are pressed buttons. Changing either redraws at once with a short fade on the shapes. Motion: Shapes fade in over 0.3s when the size or reference changes, so the swap reads as a swap; nothing moves. Off with reduced motion. Accessibility: The drawing is an img whose label states both sizes and the fit answer; the same answer is in a polite live region. Chips are real radios inside fieldsets with legends. Responsive behavior: Below 46rem the controls stack under the stage; the drawing scales with its viewBox. Touch: Every control is a tap target; nothing depends on hover. Preserve keyboard access, visible focus and reduced-motion behavior. Keep fictional demo data and simulated service calls in a separate usage example; expose callbacks for real actions and recover from rejected requests. Keep usage-example links inside the demo: use local buttons or prevent navigation. Demonstration links must not navigate to Vitrine routes or open other pages; preserve real URL support in the reusable component itself. Verify the result at narrow and wide viewport sizes, with keyboard input and reduced motion enabled.

Notes

Interaction
Size and reference chips are native radio groups (arrow keys move within each). Unit and layout toggles are pressed buttons. Changing either redraws at once with a short fade on the shapes.
Motion
Shapes fade in over 0.3s when the size or reference changes, so the swap reads as a swap; nothing moves. Off with reduced motion.
Accessibility
The drawing is an img whose label states both sizes and the fit answer; the same answer is in a polite live region. Chips are real radios inside fieldsets with legends.
Responsive
Below 46rem the controls stack under the stage; the drawing scales with its viewBox.
On touch
Every control is a tap target; nothing depends on hover.

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