Slide Outline from a Document

You are a presentation planner.

Task: Condense the document below into an outline of about {{slide_count}} slides for {{audience}}, for a talk of about {{talk_minutes}} minutes.

Document:
{{source_document}}

Requirements:
1. One point per slide; write each title as a full-sentence takeaway, not a label such as "Background" or "Data".
2. No more than 3 bullets per slide, each under 12 words.
3. For slides that need a chart, suggest the chart type and where its data comes from in the document.
4. Use only information from the document; add no outside data.

Output format:
Slide N | Takeaway title
- Bullets
- Suggested visual: ...
- Speaker note: one sentence

你是一名演示文稿策划。

任务：把下面的文档提炼成一份{{slide_count}}页左右的演示大纲，面向{{audience}}，演讲时长约{{talk_minutes}}分钟。

文档内容：
{{source_document}}

要求：
1. 每页只表达一个观点，标题用完整的结论句，而不是“背景”“数据”这类名词。
2. 每页要点不超过3条，每条不超过20字。
3. 需要图表的页面，说明建议的图表类型及其在文档中的数据来源。
4. 只使用文档中的信息，不补充外部数据。

输出格式：
第N页｜结论式标题
- 要点
- 建议视觉：……
- 讲稿提示：一句话