Build me a one-week content calendar across three platforms. Here's the context:

**Content pillars and sub-topics:**

- Pillar 1: [name] — Sub-topics: [list 4-5]
- Pillar 2: [name] — Sub-topics: [list 4-5]
- Pillar 3: [name] — Sub-topics: [list 4-5]
- Pillar 4: [name] — Sub-topics: [list 4-5]

**Platform schedule:**

- **LinkedIn:** 3 posts this week. Mix: 1 thought leadership (long-form, 800+ words), 1 tactical tip (short, 200 words), 1 engagement post (question or poll).
- **Email newsletter:** 1 send on Thursday. Theme ties to the best-performing LinkedIn post from last week: [topic]. 500 words max.
- **Twitter/X:** 5 posts. Mix: 2 standalone insights, 1 data point, 1 retweet-with-comment prompt, 1 question.

**This week's priority:** [Product launch / event / seasonal theme / none]

For each piece, give me: Day, Platform, Pillar, Content type, Headline/hook, 1-sentence brief, and any reference material I should include.

Format as a table sorted by day.