Computed styles are what `getComputedStyle(element)` returns: every CSS property resolved to its absolute value. AI2 Design's extractor reads computed styles directly from the live DOM (via Playwright), which is how it can produce honest token bundles — the captured font-weight is what the browser shipped, not what the stylesheet declared. This is more reliable than parsing CSS files because cascade order, media queries, and JS-applied styles all collapse into computed values.
Glossary · framework
Computed Style
The final CSS property values the browser actually applies to an element after cascading, inheritance, and unit resolution.