diff --git a/index.html b/index.html
index 38ab3fb..ee965fc 100644
--- a/index.html
+++ b/index.html
@@ -1524,17 +1524,52 @@ let currentSimEdges = [];
 // ── Health metrics cache: nodeId → { cpu_pct, mem_pct, status } ──
 const nodeHealthCache = new Map();
 
+const VPS_API    = 'https://api.soar-enrich.com/brain/api';
+const VPS_GET    = VPS_API + '/site/config/public?user=maita';
+const VPS_SET    = VPS_API + '/site/config/atlas_data';
+const APIKEY_KEY = 'posimai_api_key';
+
 async function loadData() {
+    // 1. VPS から取得を試みる（クラウドが正）
+    try {
+        const res = await fetch(VPS_GET, { signal: AbortSignal.timeout(5000) });
+        if (res.ok) {
+            const data = await res.json();
+            const cloud = data.config?.atlas_data;
+            if (cloud && cloud.nodes) {
+                atlasData = cloud;
+                localStorage.setItem(STORAGE_KEY, JSON.stringify(atlasData));
+                return;
+            }
+        }
+    } catch { /* fallthrough to local cache */ }
+    // 2. ローカルキャッシュ
     const saved = localStorage.getItem(STORAGE_KEY);
     if (saved) {
         try { atlasData = JSON.parse(saved); return; } catch (e) {}
     }
-    // No saved data — wizard will handle initialization
+    // 3. No saved data — wizard will handle initialization
 }
 
+let _saveTimer = null;
 function saveData() {
     atlasData.meta.updated = new Date().toISOString().slice(0, 10);
-    localStorage.setItem(STORAGE_KEY, JSON.stringify(atlasData));
+    const payload = JSON.stringify(atlasData);
+    localStorage.setItem(STORAGE_KEY, payload);
+    // VPS に debounce 保存（3s）
+    clearTimeout(_saveTimer);
+    _saveTimer = setTimeout(async () => {
+        const key = localStorage.getItem(APIKEY_KEY);
+        if (!key) return;
+        try {
+            await fetch(VPS_SET, {
+                method: 'POST',
+                headers: { 'Content-Type': 'application/json', 'Authorization': 'Bearer ' + key },
+                body: JSON.stringify({ value: atlasData }),
+                signal: AbortSignal.timeout(6000)
+            });
+        } catch { /* silent — local is still saved */ }
+    }, 3000);
 }
 
 // ── Graph rendering ────────────────────────────────────────────