No easing curves anywhere. Click a row to drop the block with that preset.
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Motion spec · one hero per screen
Moment
Trigger
Duration
Spring
End state
Haptic
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Color
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Spine colours are sampled from each cover at import, then snapped to the nearest flat tone. No gradients; the only shading is a 4px light and dark edge on each spine.
Type
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Radius & stroke
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Strokes: 2.5px ink on components, 3px on containers and planks. Shadows are hard offsets only: 0 4–5px 0 ink at rest, 0 1px 0 when pressed (the element moves down 4px). Nothing blurs.