Per-marketplace tuning
Amazon: title front-loads the primary keyword, bullets emphasize benefits with measurable specs, A+ content draft included.
Etsy: long-tail keyword phrases mined from Etsy's autocomplete, 'gift for' angles, and tags rotated to 13 max.
eBay: item specifics filled exhaustively (Cassini rewards specifics-completeness), condition language calibrated, photos optimized for mobile.
