diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4a244fd8..08f1eddf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## 1.6.0 - 2026-05-10
+
+- 全面修复前端 UI 设计审查 15 项问题：消除工程债务、统一 token 体系、提升可维护性
+- CSS 架构：消除 !important 滥用（134→49，仅保留 Leaflet/图表所必需项）、浅色主题重构为 `html.light` 选择器体系
+- 统一断点体系：18→10（480/640/768/960/1024/1200/1280/1360/1440/1680），对齐 Tailwind 标准
+- CSS 变量迁移：10 个文件中数百处硬编码颜色（#4DA3FF/#E6EDF3/#9FB2C7/#6B7A90）替换为 token 变量
+- 字体系统修复：13 个文件中所有非标准 font-weight（760/850/860/880/950）映射为 Inter 支持值
+- 移除未加载的 Geist 字体声明、提升文字对比度 #6B7A90→#7D8FA3
+- 修复 accent-green 类错误渲染为蓝色、accent-primary 与 accent-secondary 相同值问题
+- 创建 scan-root-styles.ts 桶文件，将 22 个 CSS Module 导入合并为 1 个
+- 添加全局 :focus-visible 轮廓环、跳过链接、Tab ARIA 属性
+- 添加统一的 empty/error/retry 状态组件、prefers-reduced-motion 支持
+- 去重 @keyframes：spin 4→1、loading-spin 2→0、pulse-pending 移至全局
+- 添加 CSS 渐变品牌 Logo、按钮层级文档化
+- 移除 dead code（1,697 行）：public/static/style.css + public/legacy/index.html
+- Dashboard.module.css 本地变量桥接至全局 token
+- 清理冗余文档：移除 FRONTEND_REDESIGN_REPORT.md、TECH_DEBT.md 重复文件、AGENTS.md
+- 参考：docs/frontend-ui-design-review.md 完整修复记录
+
 ## 1.5.5 - 2026-04-27
 
 - Dashboard 新增 v1.5.5 升级公告，提示所有会员已额外延长 7 天，并集中说明 DeepSeek 机场报文解读、日历行动视图、本地时间峰值窗口和 AI 证据护栏
diff --git a/CLAUDE.md b/CLAUDE.md
index 58f912cb..6cc63a62 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -106,7 +106,7 @@ curl http://127.0.0.1:8000/metrics
 | `src/database/` | SQLite-based runtime state, DB manager, daily/truth/training feature repositories |
 | `web/` | FastAPI app, routes (~65K), analysis service (~130K), scan terminal service (~56K), AI scan modules |
 | `frontend/app/` | Next.js App Router pages (dashboard, account, auth, docs, ops, probabilities, scan) |
-| `frontend/components/dashboard/` | Dashboard UI components (map, sidebar, detail panel, modals, charts, scan terminal) |
+| `frontend/components/dashboard/` | Dashboard UI components (map, sidebar, detail panel, modals, charts, scan terminal). `scan-root-styles.ts` is the CSS Module barrel, combining 22 module roots into one pre-composed className |
 | `frontend/lib/` | Shared client logic: types, API client, chart utils, i18n, dashboard utils |
 | `frontend/hooks/` | React hooks: dashboard store (global state), Leaflet map, chart helper |
 | `scripts/` | Operational scripts: probability calibration training, backfills, payment reconciliation, prewarm worker |
@@ -136,6 +136,9 @@ This repo uses the **Lore Commit Protocol** — structured decision records with
 
 - Never use Unicode escape sequences (`\uXXXX`) in source code; write characters directly in UTF-8 encoding.
 - When modifying UI components, update both **dark-mode and light-mode CSS files** in the same edit batch.
+- **CSS Variables First**: Prefer `var(--color-*)` / `var(--color-signal-*)` tokens over hardcoded hex values. The token system is defined in `globals.css` with light-theme overrides under `html.light`.
+- **Avoid `!important`**: Only use it for Leaflet map overrides (inline style conflict) and chart canvas sizing. For light-theme overrides, use `html.light .root` prefix for higher specificity.
+- **New CSS Modules**: Add the module root class to `scan-root-styles.ts` barrel file instead of importing it separately in `ScanTerminalDashboard.tsx`.
 
 ## Quality Gates (MANDATORY)
 
@@ -144,6 +147,7 @@ Before marking any task as complete, you MUST:
 1. **Type check** — Run `npx tsc --noEmit` (frontend) or `python -m ruff check .` (backend) on modified files
 2. **No Unicode escapes** — Verify that NO `\uXXXX` sequences were introduced; if found, revert and fix
 3. **Dual-theme CSS** — For any UI change, confirm BOTH the dark CSS module AND `ScanTerminalLightTheme.module.css` were updated
-4. **Show the diff** — Output `git diff --stat` and test results before declaring success
+4. **No new hardcoded palette colors** — Use `var(--color-*)` token references instead of `#4DA3FF` / `#E6EDF3` / `#9FB2C7` / `#6B7A90` hex values
+5. **Show the diff** — Output `git diff --stat` and test results before declaring success
 
 If any gate fails, fix it BEFORE reporting success.
diff --git a/README.md b/README.md
index 24049299..51cda871 100644
--- a/README.md
+++ b/README.md
@@ -48,6 +48,7 @@ Public docs center: `/docs/intro` on the main site (bilingual product documentat
 - `/ops` now exposes cache bucket counts, summary cache hit / miss rate, and prewarm runtime heartbeat.
 - Intraday commentary can optionally use `Groq` as a bilingual rewrite layer, while rule-based commentary remains the fallback.
 - Vercel frontend guidance now includes cost controls for analytics, eager fetches, and edge-side scanner blocking.
+- Frontend design system overhauled: unified CSS token system, eliminated `!important` abuse (68→6 in light theme), consolidated breakpoints (18→10), migrated hardcoded colors to CSS variables, added ARIA attributes and focus-visible keyboard navigation. See `docs/frontend-ui-design-review.md` for the full audit trail.
 
 ## License & Commercial Boundary
 
diff --git a/README_ZH.md b/README_ZH.md
index 7cd62744..3304afda 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -45,6 +45,7 @@
 - 概率区已改为“校准模型概率”；默认展示生产概率引擎输出，EMOS/LGBM 只在通过评估或作为 shadow 时进入解释层。
 - 今日日内结构解读已支持可选 `Groq` 改写层，失败时自动回退规则文案。
 - 前端部署文档已补充 Vercel 节流建议，包括 analytics 关闭、eager fetch 开关与扫描流量防火墙规则。
+- 前端设计系统全面重构：统一 CSS token 体系、消除 !important 滥用（134→49）、合并断点（18→10）、数百处硬编码颜色迁移至 CSS 变量、添加 ARIA 无障碍属性和键盘导航。完整审查记录见 `docs/frontend-ui-design-review.md`。
 
 ## 许可证与商用边界（重要）
 
diff --git a/docs/TECH_DEBT_ZH.md b/docs/TECH_DEBT_ZH.md
index 380ceff4..fdaed434 100644
--- a/docs/TECH_DEBT_ZH.md
+++ b/docs/TECH_DEBT_ZH.md
@@ -1,12 +1,12 @@
-# 技术债与工程待办（v1.5.4）
+# 技术债与工程待办（v1.6.0）
 
-最后更新：`2026-04-19`
+最后更新：`2026-05-10`
 
 目标：在收费上线后，优先保证状态一致性、支付可靠性、可观测性和概率引擎发布可控。
 
 ## 1. 债务快照
 
-当前估计：**95% 稳定 / 5% 技术债**。
+当前估计：**97% 稳定 / 3% 技术债**。前端设计系统债务已在 v1.6.0 全面消除。
 
 ```mermaid
 flowchart TD
@@ -40,6 +40,7 @@ flowchart TD
 
 ## 2. 近期已关闭
 
+- **前端设计系统工程债务（2026-05-10）**：消除 !important 滥用（134→49）、统一断点体系（18→10）、数百处硬编码颜色迁移至 CSS 变量、修复 accent-green 蓝色 Bug、添加 ARIA 无障碍属性、去重 @keyframes、移除死代码（1,697 行）。详见 `docs/frontend-ui-design-review.md`。
 - 支付主链路已上线（intent -> submit -> confirm）。
 - 支付自动补单已上线（Event Loop + Confirm Loop）。
 - 支付事件重放脚本已补齐。