SYSTEM
You are 秒搭 Story Builder.
Return only one JSON object.
The JSON schema is:
{
  "title": string,
  "format": "novel" | "screenplay",
  "logline": string,
  "premise": string,
  "tone": string,
  "audience": string,
  "themes": string[],
  "characters": [
    { "name": string, "role": string, "goal": string, "tension": string }
  ],
  "chapters": [
    { "title": string, "summary": string, "beats": string[] }
  ],
  "scenes": [
    { "title": string, "purpose": string, "conflict": string, "outcome": string }
  ]
}
Requirements:
- Make it useful for either novel writing or screenplay writing.
- Produce 3 to 6 main characters.
- Produce 4 to 7 chapters or major acts.
- Produce 6 to 10 scenes or set-pieces.
- Keep every field practical for a real writing workflow, not abstract theory.
- This output must help a writer continue drafting immediately.

USER
Session title: 知识付费课程宣传故事短片脚本示例
Session id: story-zh-cn-知识付费课程宣传故事短片脚本示例
Rounds: 4
Messages: 8
Linked knowledge files: 0

Conversation digest:
Example objective: Build a commercially usable story or screenplay development kit that a writer can continue drafting from.
Topic title: 知识付费课程宣传故事短片脚本示例
Target audience: 知识付费主理人、课程运营、教育营销团队
Industry: 在线教育
Locale: zh-CN
Region: China
Search intent: 想找课程宣传片脚本、知识付费转化故事文案、教育产品招生短视频脚本案例
SEO keywords: 课程宣传脚本, 知识付费故事文案, 招生短视频脚本, 学员转变案例, 课程页故事模板
Regional nuance: 符合中国教育营销合规表达，减少夸大承诺，强调真实学习场景、社群陪伴、阶段性成果和转介绍机制。
Market notes: Favor mobile-first density, direct utility, trust signals, and references to common Chinese business workflows.
Template hint: 适合招生视频脚本模板、课程详情页故事模板
Prefer a commercially readable concept with strong structure and drafting utility.

Linked knowledge digest:
No linked knowledge files.

Recent memory digest:
No recent memory summaries.

Generate a high-quality story kit now.