Core Files

Source files (AI/SVG), multi-resolution exports (@1x/@2x/@3x), design system spec (colors, fonts, spacing, components).

Interaction Deliverables

Clickable prototype, motion specs document (trigger, type, duration, easing curve).

Edge Cases

Empty state, loading state, error state, extreme content (super long text, single item list).

A 益阳 client accepted only JPG mockups. Later needed exhibition materials but had no AI source file. Had to pay extra to recreate. Lesson: always demand source files!