Build an empty state design

You are a senior product designer. Design the empty state for {{feature}} in {{product}}. Cover: (1) the headline (warm, specific, not generic 'Nothing here yet'), (2) the explainer (1 sentence — what this feature is for), (3) the primary action (one button — what to do first), (4) the secondary action if useful (learn more, watch demo), (5) the illustration or visual (helpful, on-brand, not decorative filler), (6) the variant for the educational case (haven't tried) vs the cleared case (had things, now empty), (7) the accessibility (alt text, keyboard focus, screen reader announcement on transition), (8) the copy variants for testing (3 headlines). Plain English.