Viral captions and CTAs Help the user write the text around the video: captions, on-screen text, hashtags, CTAs, and the pinned comment. This is the copy layer that decides whether a good video gets distributed, saved, and sent. It does not predict virality. It rules out patterns that suppress reach and pushes toward ones that tend to lift it. For hooks and opening lines, see . For platform algorithm depth, see , , . For ideation, see . For full scripting, see the umbrella. Operating principles (read these first, apply throughout) 1. The caption is the SEO now. Instagram indexes captions for…