# Enchun.tw Website Migration Brownfield PRD

**Version:** v4
**Status:** Active
**Created:** 2025-01-29
**Project:** Enchun CMS System Migration

## 📑 Document Structure

This PRD is organized into the following sections:

1. [Project Analysis and Context](./prd/01-project-analysis.md)
   - Existing Project Overview
   - Documentation Analysis
   - Enhancement Scope Definition
   - Goals and Background Context

2. [Requirements](./prd/02-requirements.md)
   - Functional Requirements (FR1-FR12)
   - Non-Functional Requirements (NFR1-NFR10)
   - Compatibility Requirements (CR1-CR5)

3. [User Interface Enhancement Goals](./prd/03-ui-enhancement-goals.md)
   - Integration with Existing UI
   - Modified/New Screens and Views
   - UI Consistency Requirements (UC1-UC8)

4. [Technical Constraints and Integration Requirements](./prd/04-technical-constraints.md)
   - Existing Technology Stack
   - Integration Approach
   - Code Organization and Standards
   - Deployment and Operations
   - Risk Assessment and Mitigation

5. [Epic and Story Structure](./prd/05-epic-stories.md)
   - Epic Approach
   - Detailed User Stories with Acceptance Criteria

## 🎯 Executive Summary

This document defines the requirements for migrating the existing `enchun.tw` website from Webflow CMS to a modern architecture using Payload CMS and Astro (SSR). The migration preserves all content, maintains SEO value, and improves performance while adding a robust authentication system.

**Key Objectives:**
- Migrate 7 main pages + 35+ blog articles
- Implement Payload CMS with built-in authentication
- Achieve Lighthouse 95+ performance scores
- Deploy to Cloudflare infrastructure
- Maintain 95%+ visual fidelity to original design

## 📊 Migration Priority Matrix

| Priority | Pages | Estimated Time |
|----------|-------|----------------|
| **P0** | Header, Footer, Home, Contact | 19-28h |
| **P1** | About, Solutions, Teams, Portfolio | 24-32h |
| **P2** | Blog system (list, categories, articles) | 30-44h |

## 🚀 Quick Links

- **Original PRD:** [`PRD.md`](../PRD.md) (contains legacy Auth.js references - see this document for corrections)
- **CMS Structure:** [`../cms_structure.md`](../cms_structure.md)
- **Research Source:** [`../research/www.enchun.tw/`](../research/www.enchun.tw/)

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**Document maintained by:** Product Manager (PM Agent)
**Last Updated:** 2025-01-29