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: B2B企业微信开发信模板：外贸以外，国内获客也能这样写
Session id: copy-zh-cn-b2b企业微信开发信模板-外贸以外-国内获客也能这样写
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: B2B企业微信开发信模板：外贸以外，国内获客也能这样写
Target audience: ToB销售、商务拓展、SaaS企业市场团队
Industry: 企业服务
Locale: zh-CN
Region: China
Search intent: 用户需要更专业、不冒犯、能引发回复的企业客户开发文案模板。
SEO keywords: 企业微信开发信, ToB销售话术, 客户开发文案, 商务拓展私信模板, B2B获客话术
Regional nuance: 贴合中国B2B销售流程，强调企业微信触达、名片交换、案例背书、方案预约和高效商务表达。
Market notes: Favor mobile-first density, direct utility, trust signals, and references to common Chinese business workflows.
Template hint: 按“身份说明—客户相关性—价值点—低门槛动作—后续跟进”结构生成。
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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