diff --git a/.gitignore b/.gitignore
index f511187..77792ee 100644
--- a/.gitignore
+++ b/.gitignore
@@ -5,8 +5,9 @@
 node_modules/
 .claude/
 
-# MapProxy tile cache
+# Tile proxy disk cache
 tiles/cache/
+tile-proxy/cache/
 
 # TODO: where does this rule come from?
 docs/_book
diff --git a/frontend/App.vue b/frontend/App.vue
index 3df7a7d..e4c3328 100644
--- a/frontend/App.vue
+++ b/frontend/App.vue
@@ -104,6 +104,9 @@ import { ref, computed, onMounted, watch } from 'vue'
 import L from 'leaflet'
 import 'leaflet/dist/leaflet.css'
 
+// 瓦片代理地址 — 部署到内网其他机器时，将 localhost 改为服务器 IP
+const TILE_PROXY_URL = 'http://localhost:8080/tiles/{z}/{x}/{y}{r}.png'
+
 // ── 常量 ────────────────────────────────────────────────────
 const TOTAL_VOLS = 63
 
@@ -268,9 +271,8 @@ function initMap() {
     attributionControl: false
   })
 
-  L.tileLayer('https://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}{r}.png', {
-    maxZoom: 18,
-    subdomains: 'abcd'
+  L.tileLayer(TILE_PROXY_URL, {
+    maxZoom: 18
   }).addTo(map)
 
   L.control.attribution({ prefix: false, position: 'bottomright' })
diff --git a/tile-proxy/docker-compose.yml b/tile-proxy/docker-compose.yml
new file mode 100644
index 0000000..23986a3
--- /dev/null
+++ b/tile-proxy/docker-compose.yml
@@ -0,0 +1,15 @@
+services:
+  tile-proxy:
+    image: nginx:alpine
+    ports:
+      - "8080:80"
+    volumes:
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
+      - ./cache:/var/cache/nginx/tiles
+    restart: unless-stopped
+    # 健康检查：每30秒确认代理存活
+    healthcheck:
+      test: ["CMD", "wget", "-qO-", "http://localhost/health"]
+      interval: 30s
+      timeout: 5s
+      retries: 3
diff --git a/tile-proxy/nginx.conf b/tile-proxy/nginx.conf
new file mode 100644
index 0000000..30b1d5e
--- /dev/null
+++ b/tile-proxy/nginx.conf
@@ -0,0 +1,54 @@
+# 磁盘缓存配置
+# levels=1:2        两级目录结构，避免单目录文件过多
+# keys_zone=20m     内存索引 20MB，约可索引 160,000 个瓦片
+# max_size=10g      磁盘缓存上限 10GB（约覆盖全国 z0-z14 级别）
+# inactive=30d      30天未访问的瓦片自动清理
+proxy_cache_path /var/cache/nginx/tiles
+    levels=1:2
+    keys_zone=tiles_cache:20m
+    max_size=10g
+    inactive=30d
+    use_temp_path=off;
+
+server {
+    listen 80;
+
+    # 使用 Docker 内置 DNS 解析上游域名
+    resolver 127.0.0.11 valid=300s;
+    resolver_timeout 5s;
+
+    location /tiles/ {
+        # 去掉 /tiles/ 前缀，补全底图样式路径后转发
+        rewrite ^/tiles/(.*)$ /light_all/$1 break;
+
+        proxy_pass https://a.basemaps.cartocdn.com;
+        proxy_ssl_server_name on;
+
+        # 缓存配置
+        proxy_cache            tiles_cache;
+        proxy_cache_key        "$uri";
+        proxy_cache_valid      200 30d;
+        proxy_cache_lock       on;           # 同一瓦片并发请求只放行一个去上游
+        proxy_cache_lock_timeout 5s;
+
+        # 上游故障时继续提供过期缓存，避免地图空白
+        proxy_cache_use_stale  error timeout updating
+                               http_500 http_502 http_503 http_504;
+        proxy_cache_background_update on;
+
+        # 超时设置
+        proxy_connect_timeout  5s;
+        proxy_read_timeout     15s;
+
+        # 响应头
+        add_header Access-Control-Allow-Origin *;
+        add_header X-Cache-Status $upstream_cache_status;
+        expires 30d;
+    }
+
+    # 健康检查
+    location /health {
+        return 200 "ok\n";
+        add_header Content-Type text/plain;
+    }
+}
diff --git a/tiles/docker-compose.yml b/tiles/docker-compose.yml
deleted file mode 100644
index 461a0be..0000000
--- a/tiles/docker-compose.yml
+++ /dev/null
@@ -1,14 +0,0 @@
-version: '3.8'
-
-services:
-  mapproxy:
-    image: kartoza/mapproxy:latest
-    ports:
-      - "8080:8080"
-    volumes:
-      - ./mapproxy/mapproxy.yaml:/srv/mapproxy/mapproxy.yaml
-      - ./mapproxy/seed.yaml:/srv/mapproxy/seed.yaml
-      - ./cache:/srv/mapproxy/cache_data
-    environment:
-      - MAPPROXY_PROCESSES=4
-    restart: unless-stopped
diff --git a/tiles/mapproxy/mapproxy.yaml b/tiles/mapproxy/mapproxy.yaml
deleted file mode 100644
index 1189546..0000000
--- a/tiles/mapproxy/mapproxy.yaml
+++ /dev/null
@@ -1,34 +0,0 @@
-services:
-  tms:
-    grids: [GLOBAL_WEBMERCATOR]
-    origin: nw
-    restful: true
-
-layers:
-  - name: carto_light
-    title: CartoDB Positron (Cached)
-    sources: [carto_light_cache]
-
-caches:
-  carto_light_cache:
-    grids: [GLOBAL_WEBMERCATOR]
-    sources: [carto_light_source]
-    cache:
-      type: file
-      directory: /srv/mapproxy/cache_data/carto_light
-
-sources:
-  carto_light_source:
-    type: tile
-    url: https://a.basemaps.cartocdn.com/light_all/%(z)s/%(x)s/%(y)s.png
-    grid: GLOBAL_WEBMERCATOR
-
-grids:
-  GLOBAL_WEBMERCATOR:
-    srs: EPSG:3857
-    origin: nw
-
-globals:
-  cache:
-    base_dir: /srv/mapproxy/cache_data
-    lock_dir: /srv/mapproxy/cache_data/.locks
diff --git a/tiles/mapproxy/seed.yaml b/tiles/mapproxy/seed.yaml
deleted file mode 100644
index d0e7f25..0000000
--- a/tiles/mapproxy/seed.yaml
+++ /dev/null
@@ -1,13 +0,0 @@
-seeds:
-  carto_light_seed:
-    caches: [carto_light_cache]
-    grids: [GLOBAL_WEBMERCATOR]
-    coverages: [china_coverage]
-    levels:
-      from: 1
-      to: 10
-
-coverages:
-  china_coverage:
-    bbox: [73.0, 18.0, 135.0, 54.0]
-    srs: EPSG:4326