diff --git a/css/style.css b/css/style.css
index 772b6c5..bb75113 100644
--- a/css/style.css
+++ b/css/style.css
@@ -1885,19 +1885,31 @@ body::before {
 .kb-toolbar {
     display: flex;
     align-items: center;
-    justify-content: space-between;
     gap: 8px;
     flex-shrink: 0;
+    flex-wrap: wrap;
 }
-.kb-toolbar-left {
-    display: flex;
-    align-items: center;
-    gap: 8px;
+.kb-embed-select {
+    flex: 1;
+    min-width: 0;
+    max-width: 200px;
+    padding: 5px 8px;
+    font-size: 12px;
+    background: var(--bg-secondary);
+    color: var(--text-primary);
+    border: 1px solid var(--border-glass);
+    border-radius: 6px;
+    outline: none;
+    cursor: pointer;
 }
-.kb-toolbar-right {
+.kb-embed-select:focus {
+    border-color: var(--accent-cyan);
+}
+.kb-rag-toggle {
     display: flex;
     align-items: center;
     gap: 6px;
+    margin-left: auto;
     white-space: nowrap;
 }
 
@@ -1923,22 +1935,6 @@ body::before {
     to { transform: rotate(360deg); }
 }
 
-.kb-embed-model {
-    display: flex;
-    align-items: center;
-    gap: 8px;
-    flex-shrink: 0;
-}
-.kb-embed-model .setting-label {
-    flex-shrink: 0;
-}
-.kb-embed-model .model-select {
-    flex: 1;
-    min-width: 0;
-    padding: 5px 8px;
-    font-size: 12px;
-}
-
 .kb-doc-list {
     flex: 1;
     overflow-y: auto;
diff --git a/index.html b/index.html
index 1071d78..7f93eaf 100644
--- a/index.html
+++ b/index.html
@@ -340,28 +340,23 @@
                 <!-- 右侧：文档列表 -->
                 <div class="kb-main">
                     <div class="kb-toolbar">
-                        <div class="kb-toolbar-left">
-                            <button class="btn btn-sm btn-outline" id="btnUploadDoc">📄 上传文档</button>
-                            <input type="file" id="kbFileInput" accept=".txt,.md,.py,.js,.ts,.java,.go,.rs,.cpp,.c,.h,.hpp,.rb,.php,.sh,.html,.css,.json,.yaml,.yml,.toml,.xml,.sql,.csv" multiple style="display:none;">
-                            <span id="kbProgress" style="display:none;" class="kb-progress">
-                                <span class="spinner"></span>
-                                <span id="kbProgressText">处理中...</span>
-                            </span>
-                        </div>
-                        <div class="kb-toolbar-right">
-                            <label class="setting-label" style="margin:0;font-size:12px;">RAG 检索</label>
+                        <button class="btn btn-sm btn-outline" id="btnUploadDoc">📄 上传文档</button>
+                        <input type="file" id="kbFileInput" accept=".txt,.md,.py,.js,.ts,.java,.go,.rs,.cpp,.c,.h,.hpp,.rb,.php,.sh,.html,.css,.json,.yaml,.yml,.toml,.xml,.sql,.csv" multiple style="display:none;">
+                        <span id="kbProgress" style="display:none;" class="kb-progress">
+                            <span class="spinner"></span>
+                            <span id="kbProgressText">处理中...</span>
+                        </span>
+                        <select class="kb-embed-select" id="selectEmbedModel">
+                            <option value="">嵌入模型...</option>
+                        </select>
+                        <div class="kb-rag-toggle">
+                            <label class="setting-label" style="margin:0;font-size:12px;white-space:nowrap;">RAG</label>
                             <label class="toggle-label" style="margin:0;">
                                 <input type="checkbox" id="toggleRAG">
                                 <span class="toggle-slider"></span>
                             </label>
                         </div>
                     </div>
-                    <div class="kb-embed-model">
-                        <label class="setting-label" style="font-size:12px;">嵌入模型</label>
-                        <select class="model-select" id="selectEmbedModel" style="font-size:13px;">
-                            <option value="">选择嵌入模型...</option>
-                        </select>
-                    </div>
                     <div class="kb-doc-list" id="kbDocList">
                         <p class="text-muted" style="padding:16px;text-align:center;">← 选择一个知识库集合</p>
                     </div>