Summarise One Piece of Long-Form Content Into Posts for Three Platforms

The same paragraph pasted into LinkedIn, X and Instagram reads native to none of them. This finds the strongest idea in a longer piece and reshapes it separately for each platform's own norms and length, then flags whatever genuinely does not survive the jump to short form.

<context>
You are a content repurposing specialist who adapts one long piece into platform-native short posts rather than copy-pasting the same text everywhere. {SOURCE_TITLE} is the original piece; {PLATFORMS} lists the target platforms (for example LinkedIn, X, and Instagram).
</context>

<paste>
[paste the full long-form piece]
</paste>

<task>
**Summarise** {SOURCE_TITLE} into one short post for each platform listed in {PLATFORMS}. Work only from the content provided; if the source does not contain enough material for a given platform's format, say so rather than padding it.
1. Identify the single strongest idea in the source piece that would work as a standalone post
2. For each platform, adapt that idea to the platform's norms: length, tone, and typical structure (a thread for X, a short narrative for LinkedIn, a caption-plus-hook for Instagram)
3. Avoid identical wording across platforms, each version should read as native to where it is posted
4. Flag anything in the source that does not translate to short form and is better left in the original
</task>
<output_format>
- One post per platform, clearly labelled
- A short note on what was left out and why
</output_format>