描述
Single-file horizontal-swipe HTML deck in the style of Replit Slides's landing-page template gallery. Eight distinct themes (helix, holm, vance, bevel, world-dark, world-mint, atlas, bluehouse) — each a complete visual system (palette + type + accent) captured from replit.com/slides. Pick one theme, do not mix. For pitch decks, board reports, brand memos, campaign reveals — when the user explicitly wants "Replit Slides style".