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: 微信社群运营文案大全：拉新、促活、转化话术直接用
Session id: copy-zh-cn-微信社群运营文案大全-拉新-促活-转化话术直接用
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: 微信社群运营文案大全：拉新、促活、转化话术直接用
Target audience: 私域运营、社群团长、品牌增长团队
Industry: 互联网与私域运营
Locale: zh-CN
Region: China
Search intent: 用户在找系统化的社群文案模板，降低运营执行成本并提升转化效率。
SEO keywords: 社群运营文案, 微信群话术模板, 企业微信运营文案, 私域转化话术, 社群促活文案
Regional nuance: 贴合中国私域生态，兼顾微信群、企业微信、视频号联动及常见裂变活动表达方式。
Market notes: Favor mobile-first density, direct utility, trust signals, and references to common Chinese business workflows.
Template hint: 按“拉新—欢迎—群规—促活—活动预热—成交转化—售后跟进”分类输出。
Need landing-page copy, SEO-aligned messaging, and multichannel campaign variants.

Linked knowledge digest:
No linked knowledge files.

Recent memory digest:
No recent memory summaries.

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