diff --git a/manual_trading_hub/static/app.css b/manual_trading_hub/static/app.css
index 4330f03..9b89807 100644
--- a/manual_trading_hub/static/app.css
+++ b/manual_trading_hub/static/app.css
@@ -833,8 +833,12 @@ html[data-theme="light"] .host-metric-bar {
   height: 100%;
   width: 0%;
   border-radius: inherit;
-  background: #3b82f6;
-  transition: width 0.35s ease;
+  background: #22c55e;
+  transition: width 0.35s ease, background 0.2s ease;
+}
+
+.host-metric-fill.ok {
+  background: #22c55e;
 }
 
 .host-metric-fill.warn {
diff --git a/manual_trading_hub/static/app.js b/manual_trading_hub/static/app.js
index 04494ab..b7ae024 100644
--- a/manual_trading_hub/static/app.js
+++ b/manual_trading_hub/static/app.js
@@ -112,8 +112,16 @@
   function hostMetricLevel(percent) {
     const p = Number(percent);
     if (!Number.isFinite(p)) return "ok";
-    if (p >= 90) return "bad";
-    if (p >= 75) return "warn";
+    if (p >= HOST_RESOURCE_ALERT_THRESHOLD) return "bad";
+    return "ok";
+  }
+
+  function hostOverallLevel(cpu, mem, disk) {
+    const vals = [cpu && cpu.percent, mem && mem.percent, disk && disk.percent];
+    for (let i = 0; i < vals.length; i++) {
+      const p = Number(vals[i]);
+      if (Number.isFinite(p) && p >= HOST_RESOURCE_ALERT_THRESHOLD) return "bad";
+    }
     return "ok";
   }
 
@@ -122,9 +130,8 @@
     const p = Math.max(0, Math.min(100, Number(percent) || 0));
     const level = hostMetricLevel(p);
     fillEl.style.width = p + "%";
-    fillEl.classList.remove("warn", "bad");
-    if (level === "warn") fillEl.classList.add("warn");
-    if (level === "bad") fillEl.classList.add("bad");
+    fillEl.classList.remove("warn", "bad", "ok");
+    fillEl.classList.add(level === "bad" ? "bad" : "ok");
   }
 
   function checkHostResourceAlert(cpu, mem) {
@@ -225,14 +232,7 @@
     const disk = data.disk || {};
     const net = data.network || {};
     checkHostResourceAlert(cpu, mem);
-    const levels = [
-      hostMetricLevel(cpu.percent),
-      hostMetricLevel(mem.percent),
-      hostMetricLevel(disk.percent),
-    ];
-    let overall = "ok";
-    if (levels.includes("bad")) overall = "bad";
-    else if (levels.includes("warn")) overall = "warn";
+    const overall = hostOverallLevel(cpu, mem, disk);
     if (dot) dot.className = "host-status-dot " + overall;
     const hostname = data.hostname || "服务器";
     if (name) {
diff --git a/manual_trading_hub/static/index.html b/manual_trading_hub/static/index.html
index 9e2cc89..19cfbe6 100644
--- a/manual_trading_hub/static/index.html
+++ b/manual_trading_hub/static/index.html
@@ -653,6 +653,6 @@
   <script src="/assets/dashboard.js?v=20260612-dash-monitor-count"></script>
   <script src="/assets/ai_review_render.js?v=3"></script>
   <script src="/assets/time_close_ui.js?v=2"></script>
-  <script src="/assets/app.js?v=20260613-host-status-fix"></script>
+  <script src="/assets/app.js?v=20260613-host-status-threshold"></script>
 </body>
 </html>