add mmrl check and guide

module/webui/styles/global.css

@@ -202,6 +202,49 @@ body {
     white-space: nowrap;
 }
 
+.permission-popup {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.85);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    z-index: 9999;
+}
+
+.permission-popup.hidden {
+    display: none;
+}
+
+.permission-content {
+    background-color: #fff;
+    padding: 20px;
+    border-radius: 12px;
+    width: 80%;
+    max-width: 400px;
+    text-align: center;
+}
+
+.permission-content h2 {
+    color: #333;
+    margin-bottom: 20px;
+    font-size: 18px;
+}
+
+.permission-steps {
+    text-align: left;
+    padding: 10px 20px;
+}
+
+.permission-steps p {
+    color: #333;
+    margin: 10px 0;
+    font-size: 16px;
+}
+
 .ripple {
     position: absolute;
     border-radius: 50%;
@@ -252,4 +295,13 @@ body {
     .file-item svg {
         fill: #C2C2C2;
     }
+
+    .permission-content {
+        background-color: #343434;
+    }
+
+    .permission-content h2,
+    .permission-steps p {
+        color: #fff;
+    }
 }