diff --git a/frontend/index.html b/frontend/index.html
index 4447ae8..e95b3bf 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -3,7 +3,7 @@
   <head>
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>GLM Chat</title>
+    <title>AI Chat</title>
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
   </head>
   <body>
diff --git a/frontend/public/favicon.svg b/frontend/public/favicon.svg
index ac3bc43..2d6844a 100644
--- a/frontend/public/favicon.svg
+++ b/frontend/public/favicon.svg
@@ -1,4 +1,10 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32">
-  <circle cx="16" cy="16" r="14" fill="#4f46e5"/>
-  <text x="16" y="21" text-anchor="middle" fill="white" font-size="14" font-weight="bold" font-family="Arial">G</text>
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 64 64">
+  <defs>
+    <linearGradient id="bg" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" stop-color="#2563eb"/>
+      <stop offset="100%" stop-color="#60a5fa"/>
+    </linearGradient>
+  </defs>
+  <rect width="64" height="64" rx="14" fill="url(#bg)"/>
+  <text x="32" y="40" text-anchor="middle" font-family="-apple-system,BlinkMacSystemFont,sans-serif" font-size="18" font-weight="800" fill="#fff" letter-spacing="-0.5">claw</text>
 </svg>
diff --git a/frontend/src/components/ChatView.vue b/frontend/src/components/ChatView.vue
index eaec5ee..9a0a3e5 100644
--- a/frontend/src/components/ChatView.vue
+++ b/frontend/src/components/ChatView.vue
@@ -1,8 +1,8 @@
 <template>
   <div class="chat-view">
     <div v-if="!conversation" class="welcome">
-      <div class="welcome-icon">G</div>
-      <h1>GLM Chat</h1>
+      <div class="welcome-icon"><svg viewBox="0 0 64 64" width="36" height="36"><rect width="64" height="64" rx="14" fill="url(#favBg)"/><defs><linearGradient id="favBg" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" stop-color="#2563eb"/><stop offset="100%" stop-color="#60a5fa"/></linearGradient></defs><text x="32" y="40" text-anchor="middle" font-family="-apple-system,BlinkMacSystemFont,sans-serif" font-size="18" font-weight="800" fill="#fff" letter-spacing="-0.5">claw</text></svg></div>
+      <h1>Chat</h1>
       <p>选择一个对话开始，或创建新对话</p>
     </div>
 
@@ -44,7 +44,7 @@
           />
 
           <div v-if="streaming" class="message-bubble assistant">
-            <div class="avatar">G</div>
+            <div class="avatar">claw</div>
             <div class="message-body">
               <div v-if="streamingThinking" class="thinking-content streaming-thinking">
                 {{ streamingThinking }}
@@ -157,14 +157,12 @@ defineExpose({ scrollToBottom })
   width: 64px;
   height: 64px;
   border-radius: 16px;
-  background: linear-gradient(135deg, #2563eb, #3b82f6);
-  color: white;
+  background: none;
   display: flex;
   align-items: center;
   justify-content: center;
-  font-size: 28px;
-  font-weight: 700;
   margin-bottom: 20px;
+  overflow: hidden;
 }
 
 .welcome h1 {
diff --git a/frontend/src/components/MessageBubble.vue b/frontend/src/components/MessageBubble.vue
index 7ecb714..41f461c 100644
--- a/frontend/src/components/MessageBubble.vue
+++ b/frontend/src/components/MessageBubble.vue
@@ -1,6 +1,7 @@
 <template>
   <div class="message-bubble" :class="[role]">
-    <div class="avatar">{{ role === 'user' ? 'U' : 'G' }}</div>
+    <div v-if="role === 'user'" class="avatar">user</div>
+    <div v-else class="avatar">claw</div>
     <div class="message-body">
       <div v-if="thinkingContent" class="thinking-block">
         <button class="thinking-toggle" @click="showThinking = !showThinking">
@@ -97,19 +98,25 @@ function copyContent() {
   display: flex;
   align-items: center;
   justify-content: center;
-  font-size: 13px;
-  font-weight: 600;
+  font-size: 11px;
+  font-weight: 700;
   flex-shrink: 0;
 }
 
 .user .avatar {
   background: linear-gradient(135deg, #2563eb, #3b82f6);
   color: white;
+  font-size: 9px;
+  font-weight: 700;
+  letter-spacing: -0.3px;
 }
 
 .assistant .avatar {
   background: linear-gradient(135deg, #3b82f6, #60a5fa);
   color: white;
+  font-size: 8px;
+  font-weight: 700;
+  letter-spacing: -0.3px;
 }
 
 .message-body {
diff --git a/frontend/src/components/MessageInput.vue b/frontend/src/components/MessageInput.vue
index 79ace7a..22d945e 100644
--- a/frontend/src/components/MessageInput.vue
+++ b/frontend/src/components/MessageInput.vue
@@ -24,7 +24,7 @@
         </button>
       </div>
     </div>
-    <div class="input-hint">基于 GLM 大语言模型，回复内容仅供参考</div>
+    <div class="input-hint">AI 助手回复内容仅供参考</div>
   </div>
 </template>
 
diff --git a/frontend/src/components/SettingsPanel.vue b/frontend/src/components/SettingsPanel.vue
index c2a1a1c..fae4f09 100644
--- a/frontend/src/components/SettingsPanel.vue
+++ b/frontend/src/components/SettingsPanel.vue
@@ -22,9 +22,6 @@
             <label>模型</label>
             <select v-model="form.model">
               <option value="glm-5">GLM-5</option>
-              <option value="glm-4-plus">GLM-4 Plus</option>
-              <option value="glm-4-flash">GLM-4 Flash</option>
-              <option value="glm-4-long">GLM-4 Long</option>
             </select>
           </div>
 
@@ -118,7 +115,7 @@ const form = reactive({
 watch(() => props.visible, (val) => {
   if (val && props.conversation) {
     form.title = props.conversation.title || ''
-    form.model = props.conversation.model || 'glm-5'
+    form.model = props.conversation.model || 'default'
     form.system_prompt = props.conversation.system_prompt || ''
     form.temperature = props.conversation.temperature ?? 1.0
     form.max_tokens = props.conversation.max_tokens ?? 65536
