Definition 01
Semantic foundation
A stable language for product purpose.
Practice
Name intent before values
Choose tokens that explain why a decision exists.
Feature 114 · Product value
Definition Practice Pairs Feature
Three paired rows place each system definition directly beside the product practice that makes it concrete.
Connect every system idea to the action teams can take next
Definition and practice share equal weight so the section explains both why the principle matters and how it changes delivery.
Definition 02
Responsive composition
Relationships that adapt to available space.
Practice
Compose through Grid
Preserve source order while changing visual arrangement.
Definition 03
Continuous evidence
Proof generated throughout the normal workflow.
Practice
Ship tests with artifacts
Make quality reproducible instead of implied.