diff --git a/VERSION b/VERSION
index c5d4cee3..1e0c609c 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-0.51.0
+0.51.1
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 76f0066a..d9f5b3b0 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -8,6 +8,19 @@ This project follows the repository versioning rule:
- `improvement` -> `+0.0.1`（bugfix + 小功能混合）
- `bugfix` -> `+0.0.1`
+## [0.51.1] — 2026-05-11
+
+Released: 2026-05-11
+
+### Highlights
+- 修复 Earth 静态资源引用方式，图标和国家边界数据改为模块相对 URL，避免部署路径变化时资源加载失败。
+- 将 Material Symbols Rounded 字体切换为本地资源，减少 Earth 页面首屏对外部字体服务的依赖。
+
+### Fixed
+- 修复 BGP 广播图标、算力中心图标和国家边界 GeoJSON 在非固定 `/earth` 路径下可能失效的问题。
+
+---
+
## [0.51.0] — 2026-05-11
Released: 2026-05-11
diff --git a/docs/version-history.md b/docs/version-history.md
index 624119f9..90609d3a 100644
--- a/docs/version-history.md
+++ b/docs/version-history.md
@@ -16,12 +16,13 @@
## Current Version
- `main` 当前主线历史推导到：`0.16.5`
-- `dev` 当前开发分支历史推导到：`0.51.0`
+- `dev` 当前开发分支历史推导到：`0.51.1`
## Timeline
| Version | Type | Branch | Commit | Summary |
| --- | --- | --- | --- | --- |
+| `0.51.1` | bugfix | `dev` | `pending` | 修复 Earth 静态资源模块相对路径与 Material Symbols 本地字体加载，避免部署路径变化或外部字体不可用时图标/边界资源失效 |
| `0.51.0` | feature | `dev` | `pending` | 新增 AI Settings 控制台与 ai_tools 工具层；重写算力中心候选预览/保存交互（呼吸圈 + 即时图标）；动作捕捉 zoom 改为 mirror-safe trend + pose hold 双通道，支持持续触发 |
| `0.50.0` | feature | `dev` | `pending` | 新增 Earth 动捕双通道控制、Motion Agent、Presentation 持久展示、AI Provider 多 provider 设置、位置候选 LLM 兜底与 FAQ |
| `0.49.0` | feature | `dev` | `pending` | 新增位置解析 Pipeline、BGP/算力中心地理定位、Docs Gatekeeper、Earth 新闻栏与 Mobile 国家高亮 |
diff --git a/frontend/package.json b/frontend/package.json
index 758f9299..417af8a6 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
{
"name": "planet-frontend",
- "version": "0.51.0",
+ "version": "0.51.1",
"private": true,
"packageManager": "bun@1",
"dependencies": {
diff --git a/frontend/public/earth/assets/fonts/material-symbols-rounded-500.ttf b/frontend/public/earth/assets/fonts/material-symbols-rounded-500.ttf
new file mode 100644
index 00000000..83b70f74
Binary files /dev/null and b/frontend/public/earth/assets/fonts/material-symbols-rounded-500.ttf differ
diff --git a/frontend/public/earth/css/fonts.css b/frontend/public/earth/css/fonts.css
new file mode 100644
index 00000000..bdae8b2e
--- /dev/null
+++ b/frontend/public/earth/css/fonts.css
@@ -0,0 +1,24 @@
+@font-face {
+ font-family: "Material Symbols Rounded";
+ font-style: normal;
+ font-weight: 500;
+ font-display: block;
+ src: url("../assets/fonts/material-symbols-rounded-500.ttf") format("truetype");
+}
+
+.material-symbols-rounded {
+ direction: ltr;
+ display: inline-block;
+ font-family: "Material Symbols Rounded";
+ font-feature-settings: "liga";
+ font-size: 24px;
+ font-style: normal;
+ font-weight: 500;
+ letter-spacing: normal;
+ line-height: 1;
+ text-transform: none;
+ white-space: nowrap;
+ word-wrap: normal;
+ -webkit-font-feature-settings: "liga";
+ -webkit-font-smoothing: antialiased;
+}
diff --git a/frontend/public/earth/index.html b/frontend/public/earth/index.html
index 94091e88..f3513dde 100644
--- a/frontend/public/earth/index.html
+++ b/frontend/public/earth/index.html
@@ -136,7 +136,7 @@
-
+