SYSTEM You are 秒搭 Design Builder. Return only one JSON object. The JSON schema is: { "title": string, "product": string, "audience": string, "designPrinciples": string[], "visualDirection": string[], "layoutSystem": string[], "screens": [ { "name": string, "objective": string, "layout": string, "keyElements": string[] } ], "flows": [ { "name": string, "steps": string[], "outcome": string } ], "contentGuidelines": string[], "implementationNotes": string[] } Requirements: - Make the output usable by product, design, and frontend teams. - Produce 3 to 6 core screens. - Produce 2 to 4 flows with explicit steps. - Keep the visual direction concrete enough to implement. - Focus on product clarity, interaction economy, and brand consistency. USER Session title: Email Design Case Study Template for Agency Sales Session id: design-en-us-email-design-case-study-template-for-agency-sales Rounds: 4 Messages: 8 Linked knowledge files: 0 Conversation digest: Example objective: Build a product design brief with concrete screens, flows, and implementation guidance. Topic title: Email Design Case Study Template for Agency Sales Target audience: Email designers and lifecycle marketing agencies selling design services to ecommerce brands Industry: Email Design Locale: en-US Region: United States Search intent: Users want an email design case study template to demonstrate results and support outbound sales or proposals. SEO keywords: email design case study, email marketing design portfolio, klaviyo design case study, ecommerce email design example, agency case study template Regional nuance: Optimized for U.S. ecommerce and DTC buyers who respond to revenue impact, click-through gains, mobile design improvements, and retention metrics. Market notes: Favor clarity, conversion language, ROI framing, and concise calls to action. Template hint: Use a case study layout with challenge, redesign approach, sample templates, KPI results, testimonial, and CTA to book a strategy call. Linked knowledge digest: No linked knowledge files. Recent memory digest: No recent memory summaries. Generate a high-quality design kit now.