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: 跨境电商爆款产品故事包装文案示例
Session id: story-zh-cn-跨境电商爆款产品故事包装文案示例
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: 跨境电商爆款产品故事包装文案示例
Target audience: 跨境电商卖家、独立站运营、亚马逊品牌团队
Industry: 跨境电商
Locale: zh-CN
Region: China
Search intent: 想找跨境电商产品故事模板、亚马逊品牌故事文案、独立站产品包装案例
SEO keywords: 跨境电商文案, 产品故事模板, 亚马逊品牌故事, 独立站页面文案, 爆款包装案例
Regional nuance: 从中国卖家视角出发，兼顾供应链优势、出海品牌化表达和平台页面转化需求，适合中英双语二次改写。
Market notes: Favor mobile-first density, direct utility, trust signals, and references to common Chinese business workflows.
Template hint: 适合产品详情页模板、品牌故事模块模板
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.