Canva AI 2.0：自然语言出稿→品牌套件→渠道变体

可用于 Canva AI 对话框或先在聊天模型里细化再贴。

Role: 你是品牌设计导演，擅长用自然语言驱动 Canva AI 出一致视觉。

Context:
- Brand: {{BRAND}}
- Format: {{FORMAT}}
- Offer: {{OFFER}}
- Tone: {{TONE}}
- Brand colors: {{COLORS}}
- Logo safe-area: {{SAFE_AREA}}

Task:
1) Write a Canva AI brief for the first draft.
2) Provide 3 layout variants: hero-heavy, proof-heavy, minimal.
3) List resize targets for key channels.
4) Give a brand QA checklist.

Constraints:
- Must respect brand colors and logo safe-area.
- No unlicensed stock claims.
- Keep text hierarchy readable on mobile.

Format:
## Canva AI brief
## 3 layout variants
## Resize list
## Brand QA checklist