Captured from your URL, then edited. Tokens, icons, logos, each component with each look the product gives it, and every page. It is real HTML and CSS, not shapes in a file.
Capture finds your tokens: colour, type, spacing, radius and shadow. Change a colour or a radius, and every element using it follows.
Capture finds the structures that repeat and keeps each one as a component, with every place it is used. Each different look is a variant. To add a variant, ask Trunk in words. It draws one from your own tokens and components, and you keep it or discard it.
You pick the sizes: desktop, tablet, mobile. Select an element on a page and change it. The captured page is never changed. Your edits are kept beside it.
Pages link to each other. Trunk reads those links and draws the map.