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: 学校法人・専門学校のオープンキャンパス告知文 例文
Session id: copy-ja-jp-学校法人-専門学校-告知文-例文
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: 学校法人・専門学校のオープンキャンパス告知文 例文
Target audience: 学校広報、入試広報、制作担当者
Industry: 教育
Locale: ja-JP
Region: Japan
Search intent: オープンキャンパス告知の文章例や募集文を探している
SEO keywords: オープンキャンパス 告知文 例, 学校 広報 例文, 専門学校 募集 文例, 入試広報 コピー 例, 学校 SNS 告知 文章
Regional nuance: 日本では本人だけでなく保護者の安心感も重要なため、日程、アクセス、服装、当日の流れなど具体情報を丁寧に記載する傾向がある。
Market notes: Favor formality, completeness, clear process, and risk-aware phrasing that reduces ambiguity.
Template hint: 媒体別告知文テンプレート
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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