diff --git a/data/wiki/guanghan_ghc05_zh.html b/data/wiki/guanghan_ghc05_zh.html
index 4f350ab..d00fdcf 100644
--- a/data/wiki/guanghan_ghc05_zh.html
+++ b/data/wiki/guanghan_ghc05_zh.html
@@ -270,9 +270,9 @@ body.wiki-image-lightbox-open { overflow: hidden; }
 
 <div class="topology-embed-shell">
 <div class="topology-embed-host">
-<iframe class="topology-embed-frame" src="http://192.168.195.241:38080/guanghan_topology_demo.html?mission=GHC-05" title="广寒基地交互式工程拓扑图（GHC-05）" loading="eager" sandbox="allow-scripts allow-same-origin allow-forms" allow="fullscreen"></iframe>
+<iframe class="topology-embed-frame" src="http://118.89.192.134:59100/topology/guanghan_topology_demo.html?mission=GHC-05" title="广寒基地交互式工程拓扑图（GHC-05）" loading="eager" sandbox="allow-scripts allow-same-origin allow-forms" allow="fullscreen"></iframe>
 </div>
-<p class="topology-embed-fallback">如果嵌入视图未能加载，可<a href="http://192.168.195.241:38080/guanghan_topology_demo.html?mission=GHC-05" target="_blank" rel="noopener noreferrer">在新窗口打开交互式拓扑图</a>。</p>
+<p class="topology-embed-fallback">如果嵌入视图未能加载，可<a href="http://118.89.192.134:59100/topology/guanghan_topology_demo.html?mission=GHC-05" target="_blank" rel="noopener noreferrer">在新窗口打开交互式拓扑图</a>。</p>
 </div>
 
 <h2 id="seealso">参见</h2>
diff --git a/data/wiki/guanghan_topology_demo.html b/data/wiki/guanghan_topology_demo.html
index bd6ffc9..5455200 100644
--- a/data/wiki/guanghan_topology_demo.html
+++ b/data/wiki/guanghan_topology_demo.html
@@ -128,7 +128,9 @@
 </div>
 
 <script>
-const API_BASE = '';
+// Keep API calls beside the HTML document so the app works both at the
+// service root and behind a reverse-proxy prefix such as /topology/.
+const API_BASE = new URL('.', window.location.href).pathname.replace(/\/$/, '');
 const SVG_NS = 'http://www.w3.org/2000/svg';
 const TYPE_LABELS = { module: '舱段模块', node: '结构节点', vehicle: '着陆器/车辆', equipment: '设备模块' };
 const ANCHOR_LABELS = {
diff --git a/deploy/nginx/wiki-59100.conf b/deploy/nginx/wiki-59100.conf
new file mode 100644
index 0000000..7762b47
--- /dev/null
+++ b/deploy/nginx/wiki-59100.conf
@@ -0,0 +1,43 @@
+server {
+    listen 59100;
+    server_name _;
+
+    client_max_body_size 100m;
+
+    location = /topology {
+        return 301 /topology/;
+    }
+
+    location ^~ /topology/ {
+        proxy_pass http://192.168.195.241:38080/;
+        proxy_http_version 1.1;
+        proxy_set_header Host $http_host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_set_header X-Forwarded-Prefix /topology;
+    }
+
+    # Compatibility route for the currently deployed topology image. Newer
+    # images derive /topology from their document URL and use this same path.
+    location ^~ /api/v1/bases/guanghan/ {
+        proxy_pass http://192.168.195.241:38080;
+        proxy_http_version 1.1;
+        proxy_set_header Host $http_host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    location / {
+        proxy_pass http://192.168.195.241:38353;
+        proxy_http_version 1.1;
+        proxy_set_header Host $http_host;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+        proxy_read_timeout 90s;
+    }
+}
diff --git a/output/playwright/ghc05_public_proxy_2026-07-15/internal_ghc05_iframe_via_public_proxy.png b/output/playwright/ghc05_public_proxy_2026-07-15/internal_ghc05_iframe_via_public_proxy.png
new file mode 100644
index 0000000..6291838
Binary files /dev/null and b/output/playwright/ghc05_public_proxy_2026-07-15/internal_ghc05_iframe_via_public_proxy.png differ
diff --git a/output/playwright/ghc05_public_proxy_2026-07-15/public_core_modal.png b/output/playwright/ghc05_public_proxy_2026-07-15/public_core_modal.png
new file mode 100644
index 0000000..5514159
Binary files /dev/null and b/output/playwright/ghc05_public_proxy_2026-07-15/public_core_modal.png differ
diff --git a/output/playwright/ghc05_public_proxy_2026-07-15/public_ghc05_iframe.png b/output/playwright/ghc05_public_proxy_2026-07-15/public_ghc05_iframe.png
new file mode 100644
index 0000000..f159baa
Binary files /dev/null and b/output/playwright/ghc05_public_proxy_2026-07-15/public_ghc05_iframe.png differ
diff --git a/tests/test_guanghan_topology_demo.py b/tests/test_guanghan_topology_demo.py
index c365392..1db159f 100644
--- a/tests/test_guanghan_topology_demo.py
+++ b/tests/test_guanghan_topology_demo.py
@@ -37,7 +37,8 @@ class GuanghanTopologySourceTests(unittest.TestCase):
         self.assertNotIn("未来西部十字结构", self.html)
 
     def test_page_uses_same_origin_api(self) -> None:
-        self.assertIn("const API_BASE = ''", self.html)
+        self.assertIn("new URL('.', window.location.href).pathname", self.html)
+        self.assertIn("replace(/\\/$/, '')", self.html)
         self.assertNotIn("http://localhost:5000", self.html)
 
     def test_page_uses_database_presentation_payload(self) -> None:
diff --git a/tests/test_topology_api.py b/tests/test_topology_api.py
index 53ee3da..69ea981 100644
--- a/tests/test_topology_api.py
+++ b/tests/test_topology_api.py
@@ -32,7 +32,8 @@ class TopologyApiServingTests(unittest.TestCase):
     def test_page_uses_same_origin_api(self) -> None:
         html = HTML_PATH.read_text(encoding="utf-8")
         self.assertNotIn("http://localhost:5000", html)
-        self.assertIn("const API_BASE = ''", html)
+        self.assertIn("new URL('.', window.location.href).pathname", html)
+        self.assertIn("replace(/\\/$/, '')", html)
 
     def test_config_has_no_default_password(self) -> None:
         source = CONFIG_PATH.read_text(encoding="utf-8")
diff --git a/tests/test_wiki_topology_proxy.py b/tests/test_wiki_topology_proxy.py
new file mode 100644
index 0000000..6cbac35
--- /dev/null
+++ b/tests/test_wiki_topology_proxy.py
@@ -0,0 +1,29 @@
+import unittest
+from pathlib import Path
+
+
+PROJECT_ROOT = Path(__file__).resolve().parents[1]
+DEMO_PATH = PROJECT_ROOT / "data" / "wiki" / "guanghan_topology_demo.html"
+GHC05_PATH = PROJECT_ROOT / "data" / "wiki" / "guanghan_ghc05_zh.html"
+
+
+class WikiTopologyProxyTests(unittest.TestCase):
+    def test_demo_derives_api_prefix_from_document_url(self):
+        html = DEMO_PATH.read_text(encoding="utf-8")
+
+        self.assertIn("new URL('.', window.location.href).pathname", html)
+        self.assertIn("replace(/\\/$/, '')", html)
+
+    def test_ghc05_embed_uses_public_proxy_instead_of_private_backend(self):
+        html = GHC05_PATH.read_text(encoding="utf-8")
+        public_url = (
+            "http://118.89.192.134:59100/topology/"
+            "guanghan_topology_demo.html?mission=GHC-05"
+        )
+
+        self.assertEqual(html.count(public_url), 2)
+        self.assertNotIn("192.168.195.241:38080", html)
+
+
+if __name__ == "__main__":
+    unittest.main()