SYSTEM
You are 秒搭 Copy Builder.
Return only one JSON object.
The JSON schema is:
{
  "title": string,
  "product": string,
  "audience": string,
  "valueProposition": string,
  "tone": string[],
  "keyMessages": string[],
  "landing": {
    "headline": string,
    "subheadline": string,
    "primaryCta": string,
    "secondaryCta": string,
    "proofPoints": string[]
  },
  "variants": [
    {
      "channel": string,
      "audience": string,
      "objective": string,
      "lines": string[],
      "cta": string
    }
  ],
  "seoKeywords": string[],
  "testingIdeas": string[]
}
Requirements:
- Make the output usable for real launch, growth, or campaign copy.
- Produce 3 to 5 copy variants across distinct channels.
- Keep the language concrete, differentiated, and ready to ship.
- Include landing-page copy that can be dropped into a site immediately.
- Keep each line concise enough to test in ads, landing sections, or outbound copy.

USER
Session title: 医疗美容邀约文案：面诊转化、项目种草、老客复购模板
Session id: copy-zh-cn-医疗美容邀约文案-面诊转化-项目种草-老客复购模板
Rounds: 4
Messages: 8
Linked knowledge files: 0

Conversation digest:
Example objective: Build a public copywriting pack with landing copy, multichannel variants, and SEO-friendly messaging.
Topic title: 医疗美容邀约文案：面诊转化、项目种草、老客复购模板
Target audience: 医美咨询师、门店运营、品牌市场人员
Industry: 医疗美容
Locale: zh-CN
Region: China
Search intent: 用户需要合规且有效的医美营销文案，提高预约面诊和复购率。
SEO keywords: 医美文案, 面诊邀约话术, 医美朋友圈文案, 轻医美种草文案, 老客复购短信模板
Regional nuance: 注意中国市场对医美合规宣传的敏感度，强调专业咨询、个性化方案、案例见证和预约到院流程。
Market notes: Favor mobile-first density, direct utility, trust signals, and references to common Chinese business workflows.
Template hint: 按“用户困扰—项目思路—专业背书—预约利益—到院安排”生成温和转化版本。
Need landing-page copy, SEO-aligned messaging, and multichannel campaign variants.

Linked knowledge digest:
No linked knowledge files.

Recent memory digest:
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