# Card Back

## Purpose

The back conceals identity during physical or digital draws while expressing the Oracle’s Chaos ↔ Meaning polarity.

## Invariants

- The design is rotationally symmetric and contains no marks that identify class, card, orientation, batch, or print position.
- An open particulate field resolves into a registered constellation without labeling either pole.
- The back is clearly distinct from every front while sharing enamel, metal, corners, and cardinal registration.
- No central symbol resembles a canonical Tile.

## Production Rules

- Build one master for the release and derive all print/digital variants from it.
- Proof imposition, bleed, trim, and duplex registration with a physical sample.
- For digital draws, use the same back at all sizes and animate only interface layers.
- Record print vendor profiles separately from the sRGB canonical master.

## States, Scale, and Accessibility

- Meaning and class remain legible at 96, 256, 512, 1024, and 2048 pixels.
- Selected, hover, focus, disabled, and high-attention states add interface contours outside the master art; they never destructively recolor the source.
- No state, class, claim, or evidence condition depends on color alone; accessible live text supplies title, class, evidence, and safety information.

## Quality Gate

- [ ] Rotation and mirrored print tests reveal no marked-card cues.
- [ ] Front/back registration passes physical proof.
- [ ] Thumbnail remains recognizably a back, not an unknown front.
- [ ] Animation respects reduced-motion settings.
- [ ] Version and print-profile provenance are recorded.

## Rights and Provenance

Every asset must be original or used under documented permission. Record card ID, prompt or source file, creator/tool, model version where relevant, date, dimensions, color profile, source references, rights status, and checksum. Franchise-derived entries use critical symbolic abstraction and may not reproduce protected logos, characters, costumes, frames, screenshots, or production art. Sacred and community-held imagery requires context and authority; do not turn it into generic decoration.
