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browser/openspec/changes/polish-ai-provider-onboarding/specs/platform-web-theme/spec.md
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2026-07-15 19:43:06 +08:00

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## MODIFIED Requirements
### Requirement: Uploaded backgrounds remain readable and restrained
The platform_web theme system SHALL preserve uploaded background visibility while keeping operational surfaces readable and avoiding harsh high-saturation overlays.
#### Scenario: Magical-girl theme uses a custom background
- **WHEN** `data-custom-background="true"` and `data-theme-palette="magical-girl"` are active
- **THEN** shared operational surfaces MUST use restrained translucent materials, muted frame accessories, and reduced glow so the background does not become visually harsh
#### Scenario: Custom background theme styling changes
- **WHEN** custom-background shared CSS is modified
- **THEN** CSS contract tests or theme documentation MUST cover the intended restraint so future changes do not reintroduce excessive pink/gold gradients