ContractSpacing + grid + radius
- Job
- Rhythm and shape
- Requirement
- must specify
- States / rules
- Spacing scale; content width; radius scale + round-vs-sharp rule
- Specified means
- Scale numbers and a shape rule
- Hardest context
- Dense list next to a hero card
Example
8-step space + radius.md for cards
Counter-example
Random rounded-xl per page
How this lives in Building Blocks
Representation: Shared foundation / token / behavior guidance.
Building Blocks should provide shared guidance, semantic roles, examples, and reusable implementation hooks where appropriate. Each product maps those roles to its own theme and documents any justified exceptions.
Do not specify the easy case only.
The source checklist’s hardest-context test is part of what “specified” means: Dense list next to a hero card.
On-spec signal
8-step space + radius.md for cards
Failure signal
Random rounded-xl per page
Catalog connection
The product-local Catalog should show this row’s actual state for that product using the Catalog contract. Building Blocks documentation can define the baseline, but it does not make a product’s row Specified, Designed, or In code by itself.