Makes the panel and marketing site readable: default paths, empty states, and copy that does not insult a tired warehouse manager.
Marcus treats RedCart as an operations tool, not a mood board. He designs catalog, orders, and staff flows so they survive a small laptop and a phone, and he fights decoration that dies when it meets real CSS and sprites.
He keeps www in the same system as the product: pricing cards, careers, about. If a screen needs a paragraph of help, he would rather change the layout. He sits with support tickets and turns the repeating ones into a clearer empty state.
He shipped design systems for two B2B products before RedCart. He still prototypes in the real templates when Figma starts lying.