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+# Requirements: v1.4 Zhihu Anti-Crawler
+
+**Defined:** 2026-03-18
+**Core Value:** 绕过知乎反爬检测，让爬虫正常工作
+
+## v1 Requirements
+
+### 指纹伪装 (Stealth)
+
+- [ ] **STEALTH-01**: 隐藏 navigator.webdriver 属性
+- [ ] **STEALTH-02**: 移除 Playwright 特有的 JS 属性（__playwright, pwInspect 等）
+- [ ] **STEALTH-03**: 模拟正常浏览器的 Chrome 属性
+- [ ] **STEALTH-04**: 修改 User-Agent 为正常浏览器格式
+
+### 集成验证 (Verify)
+
+- [ ] **VERIFY-01**: ZhihuCrawler 集成指纹伪装后能正常访问问答页面
+- [ ] **VERIFY-02**: 保持现有功能不变（登录、Cookie、内容爬取）
+
+## Out of Scope
+
+| Feature | Reason |
+|---------|--------|
+| 其他平台适配 | 本里程碑只针对知乎 |
+| 验证码识别 | 知乎主要用二维码登录，验证码场景少 |
+| 代理池扩展 | v1.3 已实现，本版本不改动 |
+| 行为伪装（鼠标轨迹等） | 先用最小改动验证效果，如需要再加 |
+
+## Traceability
+
+| Requirement | Phase | Status |
+|-------------|-------|--------|
+| STEALTH-01 | Phase 11 | Pending |
+| STEALTH-02 | Phase 11 | Pending |
+| STEALTH-03 | Phase 11 | Pending |
+| STEALTH-04 | Phase 11 | Pending |
+| VERIFY-01 | Phase 11 | Pending |
+| VERIFY-02 | Phase 11 | Pending |
+
+**Coverage:**
+- v1 requirements: 6 total
+- Mapped to phases: 6
+- Unmapped: 0 ✓
+
+---
+*Requirements defined: 2026-03-18*