diff --git a/src/components/AppSwitcher.tsx b/src/components/AppSwitcher.tsx
index ac46961..b37b58f 100644
--- a/src/components/AppSwitcher.tsx
+++ b/src/components/AppSwitcher.tsx
@@ -13,7 +13,7 @@ export function AppSwitcher({ activeApp, onSwitch }: AppSwitcherProps) {
   };
 
   return (
-    <div className="inline-flex bg-gray-100 dark:bg-gray-800 rounded-lg p-1 gap-1 border border-transparent dark:border-gray-700">
+    <div className="inline-flex bg-gray-100 dark:bg-gray-800 rounded-lg p-1 gap-1 border border-transparent ">
       <button
         type="button"
         onClick={() => handleSwitch("claude")}
diff --git a/src/components/UpdateBadge.tsx b/src/components/UpdateBadge.tsx
index 0d1c508..30d4d7a 100644
--- a/src/components/UpdateBadge.tsx
+++ b/src/components/UpdateBadge.tsx
@@ -21,7 +21,7 @@ export function UpdateBadge({ className = "", onClick }: UpdateBadgeProps) {
       className={`
         flex items-center gap-1.5 px-2.5 py-1
         bg-white dark:bg-gray-800
-        border border-gray-200 dark:border-gray-700
+        border border-border-default 
         rounded-lg text-xs
         shadow-sm
         transition-all duration-200
diff --git a/src/components/UsageFooter.tsx b/src/components/UsageFooter.tsx
index d39c277..cc04836 100644
--- a/src/components/UsageFooter.tsx
+++ b/src/components/UsageFooter.tsx
@@ -29,7 +29,7 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
   // 错误状态
   if (!usage.success) {
     return (
-      <div className="mt-3 pt-3 border-t border-gray-200 dark:border-gray-700">
+      <div className="mt-3 pt-3 border-t border-border-default ">
         <div className="flex items-center justify-between gap-2 text-xs">
           <div className="flex items-center gap-2 text-red-500 dark:text-red-400">
             <AlertCircle size={14} />
@@ -56,7 +56,7 @@ const UsageFooter: React.FC<UsageFooterProps> = ({
   if (usageDataList.length === 0) return null;
 
   return (
-    <div className="mt-3 pt-3 border-t border-gray-200 dark:border-gray-700">
+    <div className="mt-3 pt-3 border-t border-border-default ">
       {/* 标题行：包含刷新按钮 */}
       <div className="flex items-center justify-between mb-2">
         <span className="text-xs text-gray-500 dark:text-gray-400 font-medium">
diff --git a/src/components/UsageScriptModal.tsx b/src/components/UsageScriptModal.tsx
index e42133e..d48341c 100644
--- a/src/components/UsageScriptModal.tsx
+++ b/src/components/UsageScriptModal.tsx
@@ -253,7 +253,7 @@ const UsageScriptModal: React.FC<UsageScriptModalProps> = ({
                         timeout: parseInt(e.target.value),
                       })
                     }
-                    className="mt-1 w-full px-3 py-2 border border-gray-300 dark:border-gray-600 rounded bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100"
+                    className="mt-1 w-full px-3 py-2 border border-border-default dark:border-border-default rounded bg-white dark:bg-gray-800 text-gray-900 dark:text-gray-100"
                   />
                 </label>
               </div>
diff --git a/src/components/mcp/McpFormModal.tsx b/src/components/mcp/McpFormModal.tsx
index 312cdd6..a030465 100644
--- a/src/components/mcp/McpFormModal.tsx
+++ b/src/components/mcp/McpFormModal.tsx
@@ -626,7 +626,7 @@ const McpFormModal: React.FC<McpFormModalProps> = ({
                 <input
                   id={syncCheckboxId}
                   type="checkbox"
-                  className="h-4 w-4 rounded border-gray-300 text-emerald-600 focus:ring-emerald-500 dark:border-gray-600 dark:bg-gray-800"
+                  className="h-4 w-4 rounded border-border-default text-emerald-600 focus:ring-emerald-500  dark:bg-gray-800"
                   checked={syncOtherSide}
                   onChange={(event) => setSyncOtherSide(event.target.checked)}
                 />
diff --git a/src/components/mcp/McpListItem.tsx b/src/components/mcp/McpListItem.tsx
index 4d9bb78..b1d1ca9 100644
--- a/src/components/mcp/McpListItem.tsx
+++ b/src/components/mcp/McpListItem.tsx
@@ -52,7 +52,7 @@ const McpListItem: React.FC<McpListItemProps> = ({
   };
 
   return (
-    <div className="h-16 rounded-lg border border-border bg-card p-4 transition-[border-color,box-shadow] duration-200 hover:border-primary/40 hover:shadow-sm">
+    <div className="h-16 rounded-lg border border-border-default bg-card p-4 transition-[border-color,box-shadow] duration-200 hover:border-border-hover hover:shadow-sm">
       <div className="flex items-center gap-4 h-full">
         {/* 左侧：Toggle 开关 */}
         <div className="flex-shrink-0">
diff --git a/src/components/mcp/McpWizardModal.tsx b/src/components/mcp/McpWizardModal.tsx
index f1e07e3..70b1325 100644
--- a/src/components/mcp/McpWizardModal.tsx
+++ b/src/components/mcp/McpWizardModal.tsx
@@ -230,7 +230,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
         {/* Content */}
         <div className="flex-1 overflow-y-auto px-6 py-4 space-y-4">
           {/* Hint */}
-          <div className="rounded-lg border border-blue-200 bg-blue-50 p-3 dark:border-blue-800 dark:bg-blue-900/20">
+          <div className="rounded-lg border border-border-active bg-blue-50 p-3  dark:bg-blue-900/20">
             <p className="text-sm text-blue-800 dark:text-blue-200">
               {t("mcp.wizard.hint")}
             </p>
@@ -252,7 +252,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) =>
                       setWizardType(e.target.value as "stdio" | "http")
                     }
-                    className="w-4 h-4 text-emerald-500 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-700 focus:ring-emerald-500 dark:focus:ring-emerald-400 focus:ring-2"
+                    className="w-4 h-4 text-emerald-500 bg-white dark:bg-gray-800 border-border-default  focus:ring-emerald-500 dark:focus:ring-emerald-400 focus:ring-2"
                   />
                   <span className="text-sm text-gray-900 dark:text-gray-100">
                     {t("mcp.wizard.typeStdio")}
@@ -266,7 +266,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) =>
                       setWizardType(e.target.value as "stdio" | "http")
                     }
-                    className="w-4 h-4 text-emerald-500 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-700 focus:ring-emerald-500 dark:focus:ring-emerald-400 focus:ring-2"
+                    className="w-4 h-4 text-emerald-500 bg-white dark:bg-gray-800 border-border-default  focus:ring-emerald-500 dark:focus:ring-emerald-400 focus:ring-2"
                   />
                   <span className="text-sm text-gray-900 dark:text-gray-100">
                     {t("mcp.wizard.typeHttp")}
@@ -286,7 +286,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                 onChange={(e) => setWizardTitle(e.target.value)}
                 onKeyDown={handleKeyDown}
                 placeholder={t("mcp.form.titlePlaceholder")}
-                className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100"
+                className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100"
               />
             </div>
 
@@ -305,7 +305,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) => setWizardCommand(e.target.value)}
                     onKeyDown={handleKeyDown}
                     placeholder={t("mcp.wizard.commandPlaceholder")}
-                    className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100"
+                    className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100"
                   />
                 </div>
 
@@ -319,7 +319,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) => setWizardArgs(e.target.value)}
                     placeholder={t("mcp.wizard.argsPlaceholder")}
                     rows={3}
-                    className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 resize-y"
+                    className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100 resize-y"
                   />
                 </div>
 
@@ -333,7 +333,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) => setWizardEnv(e.target.value)}
                     placeholder={t("mcp.wizard.envPlaceholder")}
                     rows={3}
-                    className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 resize-y"
+                    className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100 resize-y"
                   />
                 </div>
               </>
@@ -354,7 +354,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) => setWizardUrl(e.target.value)}
                     onKeyDown={handleKeyDown}
                     placeholder={t("mcp.wizard.urlPlaceholder")}
-                    className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100"
+                    className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100"
                   />
                 </div>
 
@@ -368,7 +368,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
                     onChange={(e) => setWizardHeaders(e.target.value)}
                     placeholder={t("mcp.wizard.headersPlaceholder")}
                     rows={3}
-                    className="w-full rounded-lg border border-gray-200 px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 resize-y"
+                    className="w-full rounded-lg border border-border-default px-3 py-2 text-sm font-mono focus:outline-none focus:ring-2 focus:ring-emerald-500/20  dark:bg-gray-800 dark:text-gray-100 resize-y"
                   />
                 </div>
               </>
@@ -381,7 +381,7 @@ const McpWizardModal: React.FC<McpWizardModalProps> = ({
             wizardEnv ||
             wizardUrl ||
             wizardHeaders) && (
-            <div className="space-y-2 border-t border-gray-200 pt-4 dark:border-gray-700">
+            <div className="space-y-2 border-t border-border-default pt-4 ">
               <h3 className="text-sm font-medium text-gray-900 dark:text-gray-100">
                 {t("mcp.wizard.preview")}
               </h3>
diff --git a/src/components/providers/ProviderCard.tsx b/src/components/providers/ProviderCard.tsx
index 7d9fb64..5e34271 100644
--- a/src/components/providers/ProviderCard.tsx
+++ b/src/components/providers/ProviderCard.tsx
@@ -92,10 +92,10 @@ export function ProviderCard({
       className={cn(
         "rounded-lg bg-card p-4 shadow-sm transition-all duration-200",
         isCurrent
-          ? "border-2 border-[hsl(var(--primary))] bg-primary/5"
-          : "border border-[hsl(var(--border))] hover:border-primary/40",
+          ? "border-active border-border-active bg-primary/5"
+          : "border border-border-default hover:border-border-hover",
         dragHandleProps?.isDragging &&
-          "cursor-grabbing border-2 border-[hsl(var(--primary)/.6)] shadow-lg",
+          "cursor-grabbing border-active border-border-dragging shadow-lg",
       )}
     >
       <div className="flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
@@ -105,9 +105,9 @@ export function ProviderCard({
             className={cn(
               "mt-1 flex h-8 flex-shrink-0 items-center justify-center overflow-hidden rounded-md border text-muted-foreground transition-all duration-200",
               isEditMode
-                ? "w-8 mr-3 border-muted hover:border-primary hover:text-foreground opacity-100"
+                ? "w-8 mr-3 border-muted hover:border-border-hover hover:text-foreground opacity-100"
                 : "w-0 mr-0 border-transparent opacity-0 pointer-events-none",
-              dragHandleProps?.isDragging && "border-primary text-primary",
+              dragHandleProps?.isDragging && "border-border-active text-primary",
             )}
             aria-label={t("provider.dragHandle")}
             {...(dragHandleProps?.attributes ?? {})}
diff --git a/src/components/providers/forms/ApiKeyInput.tsx b/src/components/providers/forms/ApiKeyInput.tsx
index d78fd0d..0b1b93f 100644
--- a/src/components/providers/forms/ApiKeyInput.tsx
+++ b/src/components/providers/forms/ApiKeyInput.tsx
@@ -30,8 +30,8 @@ const ApiKeyInput: React.FC<ApiKeyInputProps> = ({
 
   const inputClass = `w-full px-3 py-2 pr-10 border rounded-lg text-sm transition-colors ${
     disabled
-      ? "bg-gray-100 dark:bg-gray-800 border-gray-200 dark:border-gray-700 text-gray-400 dark:text-gray-500 cursor-not-allowed"
-      : "border-gray-200 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-blue-500 dark:focus:border-blue-400"
+      ? "bg-gray-100 dark:bg-gray-800 border-border-default  text-gray-400 dark:text-gray-500 cursor-not-allowed"
+      : "border-border-default  dark:bg-gray-800 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active "
   }`;
 
   return (
diff --git a/src/components/providers/forms/ClaudeConfigEditor.tsx b/src/components/providers/forms/ClaudeConfigEditor.tsx
index fa330e5..2846526 100644
--- a/src/components/providers/forms/ClaudeConfigEditor.tsx
+++ b/src/components/providers/forms/ClaudeConfigEditor.tsx
@@ -84,7 +84,7 @@ const ClaudeConfigEditor: React.FC<ClaudeConfigEditorProps> = ({
             type="checkbox"
             checked={useCommonConfig}
             onChange={(e) => onCommonConfigToggle(e.target.checked)}
-            className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-700 rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
+            className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-border-default  rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
           />
           {t("claudeConfig.writeCommonConfig")}
         </label>
diff --git a/src/components/providers/forms/CodexCommonConfigModal.tsx b/src/components/providers/forms/CodexCommonConfigModal.tsx
index fb1c041..cda15e8 100644
--- a/src/components/providers/forms/CodexCommonConfigModal.tsx
+++ b/src/components/providers/forms/CodexCommonConfigModal.tsx
@@ -53,7 +53,7 @@ export const CodexCommonConfigModal: React.FC<CodexCommonConfigModalProps> = ({
 
 # Add your common TOML configuration here`}
             rows={12}
-            className="w-full px-3 py-2 border border-gray-200 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-blue-500 dark:focus:border-blue-400 transition-colors resize-y"
+            className="w-full px-3 py-2 border border-border-default  dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active  transition-colors resize-y"
             autoComplete="off"
             autoCorrect="off"
             autoCapitalize="none"
diff --git a/src/components/providers/forms/CodexConfigSections.tsx b/src/components/providers/forms/CodexConfigSections.tsx
index d5b71c5..5cf4fc5 100644
--- a/src/components/providers/forms/CodexConfigSections.tsx
+++ b/src/components/providers/forms/CodexConfigSections.tsx
@@ -36,7 +36,7 @@ export const CodexAuthSection: React.FC<CodexAuthSectionProps> = ({
         placeholder={t("codexConfig.authJsonPlaceholder")}
         rows={6}
         required
-        className="w-full px-3 py-2 border border-gray-200 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-blue-500 dark:focus:border-blue-400 transition-colors resize-y min-h-[8rem]"
+        className="w-full px-3 py-2 border border-border-default  dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active  transition-colors resize-y min-h-[8rem]"
         autoComplete="off"
         autoCorrect="off"
         autoCapitalize="none"
@@ -98,7 +98,7 @@ export const CodexConfigSection: React.FC<CodexConfigSectionProps> = ({
             type="checkbox"
             checked={useCommonConfig}
             onChange={(e) => onCommonConfigToggle(e.target.checked)}
-            className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-gray-200 dark:border-gray-700 rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
+            className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-border-default  rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
           />
           {t("codexConfig.writeCommonConfig")}
         </label>
@@ -126,7 +126,7 @@ export const CodexConfigSection: React.FC<CodexConfigSectionProps> = ({
         onChange={(e) => onChange(e.target.value)}
         placeholder=""
         rows={8}
-        className="w-full px-3 py-2 border border-gray-200 dark:border-gray-700 dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-blue-500 dark:focus:border-blue-400 transition-colors resize-y min-h-[10rem]"
+        className="w-full px-3 py-2 border border-border-default  dark:bg-gray-800 dark:text-gray-100 rounded-lg text-sm font-mono focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active  transition-colors resize-y min-h-[10rem]"
         autoComplete="off"
         autoCorrect="off"
         autoCapitalize="none"
diff --git a/src/components/providers/forms/CodexQuickWizardModal.tsx b/src/components/providers/forms/CodexQuickWizardModal.tsx
index 7b3f00f..c5f87cb 100644
--- a/src/components/providers/forms/CodexQuickWizardModal.tsx
+++ b/src/components/providers/forms/CodexQuickWizardModal.tsx
@@ -239,7 +239,7 @@ export const CodexQuickWizardModal: React.FC<CodexQuickWizardModalProps> = ({
 
           {/* Preview */}
           {(templateApiKey || templateProviderName || templateBaseUrl) && (
-            <div className="space-y-2 border-t border-gray-200 pt-4 dark:border-gray-700">
+            <div className="space-y-2 border-t border-border-default pt-4 ">
               <h3 className="text-sm font-medium text-gray-900 dark:text-gray-100">
                 {t("codexConfig.configPreview")}
               </h3>
diff --git a/src/components/providers/forms/CommonConfigEditor.tsx b/src/components/providers/forms/CommonConfigEditor.tsx
index ccbdc21..b7e6d1c 100644
--- a/src/components/providers/forms/CommonConfigEditor.tsx
+++ b/src/components/providers/forms/CommonConfigEditor.tsx
@@ -60,7 +60,7 @@ export function CommonConfigEditor({
                 id="useCommonConfig"
                 checked={useCommonConfig}
                 onChange={(e) => onCommonConfigToggle(e.target.checked)}
-                className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-gray-300 dark:border-gray-600 rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
+                className="w-4 h-4 text-blue-500 bg-white dark:bg-gray-800 border-border-default  rounded focus:ring-blue-500 dark:focus:ring-blue-400 focus:ring-2"
               />
               <span>
                 {t("claudeConfig.writeCommonConfig", {
diff --git a/src/components/providers/forms/EndpointSpeedTest.tsx b/src/components/providers/forms/EndpointSpeedTest.tsx
index 7f3eaa9..affb9f0 100644
--- a/src/components/providers/forms/EndpointSpeedTest.tsx
+++ b/src/components/providers/forms/EndpointSpeedTest.tsx
@@ -457,7 +457,7 @@ const EndpointSpeedTest: React.FC<EndpointSpeedTestProps> = ({
                   type="checkbox"
                   checked={autoSelect}
                   onChange={(event) => setAutoSelect(event.target.checked)}
-                  className="h-3.5 w-3.5 rounded border-gray-300 dark:border-gray-600"
+                  className="h-3.5 w-3.5 rounded border-border-default "
                 />
                 {t("endpointTest.autoSelect")}
               </label>
@@ -530,7 +530,7 @@ const EndpointSpeedTest: React.FC<EndpointSpeedTestProps> = ({
                     className={`group flex cursor-pointer items-center justify-between px-3 py-2.5 rounded-lg border transition ${
                       isSelected
                         ? "border-blue-500 bg-blue-50 dark:border-blue-500 dark:bg-blue-900/20"
-                        : "border-gray-200 bg-white hover:border-gray-300 hover:bg-gray-50 dark:border-gray-700 dark:bg-gray-900 dark:hover:border-gray-600 dark:hover:bg-gray-800"
+                        : "border-border-default bg-white hover:border-border-default hover:bg-gray-50  dark:bg-gray-900 dark:hover:border-gray-600 dark:hover:bg-gray-800"
                     }`}
                   >
                     <div className="flex min-w-0 flex-1 items-center gap-3">
@@ -595,7 +595,7 @@ const EndpointSpeedTest: React.FC<EndpointSpeedTestProps> = ({
               })}
             </div>
           ) : (
-            <div className="rounded-md border border-dashed border-gray-200 bg-gray-50 py-8 text-center text-xs text-gray-500 dark:border-gray-700 dark:bg-gray-900 dark:text-gray-400">
+            <div className="rounded-md border border-dashed border-border-default bg-gray-50 py-8 text-center text-xs text-gray-500  dark:bg-gray-900 dark:text-gray-400">
               {t("endpointTest.noEndpoints")}
             </div>
           )}
diff --git a/src/components/providers/forms/KimiModelSelector.tsx b/src/components/providers/forms/KimiModelSelector.tsx
index 290bc90..434812c 100644
--- a/src/components/providers/forms/KimiModelSelector.tsx
+++ b/src/components/providers/forms/KimiModelSelector.tsx
@@ -98,8 +98,8 @@ const KimiModelSelector: React.FC<KimiModelSelectorProps> = ({
 
   const selectClass = `w-full px-3 py-2 border rounded-lg text-sm transition-colors appearance-none bg-white dark:bg-gray-800 ${
     disabled
-      ? "bg-gray-100 dark:bg-gray-800 border-gray-200 dark:border-gray-700 text-gray-400 dark:text-gray-500 cursor-not-allowed"
-      : "border-gray-200 dark:border-gray-700 dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-blue-500 dark:focus:border-blue-400"
+      ? "bg-gray-100 dark:bg-gray-800 border-border-default  text-gray-400 dark:text-gray-500 cursor-not-allowed"
+      : "border-border-default  dark:text-gray-100 focus:outline-none focus:ring-2 focus:ring-blue-500/20 dark:focus:ring-blue-400/20 focus:border-border-active "
   }`;
 
   const ModelSelect: React.FC<{
diff --git a/src/components/ui/button.tsx b/src/components/ui/button.tsx
index c8e06b4..31c9f0d 100644
--- a/src/components/ui/button.tsx
+++ b/src/components/ui/button.tsx
@@ -16,7 +16,7 @@ const buttonVariants = cva(
           "bg-red-500 text-white hover:bg-red-600 dark:bg-red-600 dark:hover:bg-red-700",
         // 轮廓按钮
         outline:
-          "border border-gray-200 bg-background hover:bg-gray-100 dark:border-gray-700 dark:hover:bg-gray-800",
+          "border border-border-default bg-background hover:bg-gray-100 hover:border-border-hover dark:hover:bg-gray-800",
         // 次按钮：灰色（对应旧版 secondary）
         secondary:
           "text-gray-500 hover:bg-gray-100 dark:text-gray-400 dark:hover:bg-gray-800 dark:hover:text-gray-200",
diff --git a/src/components/ui/dialog.tsx b/src/components/ui/dialog.tsx
index 757b196..d658a85 100644
--- a/src/components/ui/dialog.tsx
+++ b/src/components/ui/dialog.tsx
@@ -55,7 +55,7 @@ const DialogContent = React.forwardRef<
       <DialogPrimitive.Content
         ref={ref}
         className={cn(
-          "fixed left-1/2 top-1/2 flex flex-col w-full max-w-lg max-h-[90vh] translate-x-[-50%] translate-y-[-50%] border bg-white dark:bg-gray-900 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
+          "fixed left-1/2 top-1/2 flex flex-col w-full max-w-lg max-h-[90vh] translate-x-[-50%] translate-y-[-50%] border border-border-default bg-white dark:bg-gray-900 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg",
           zIndexMap[zIndex],
           className,
         )}
diff --git a/src/components/ui/dropdown-menu.tsx b/src/components/ui/dropdown-menu.tsx
index 8bad3e7..dd60662 100644
--- a/src/components/ui/dropdown-menu.tsx
+++ b/src/components/ui/dropdown-menu.tsx
@@ -40,7 +40,7 @@ const DropdownMenuSubContent = React.forwardRef<
   <DropdownMenuPrimitive.SubContent
     ref={ref}
     className={cn(
-      "z-50 min-w-[8rem] rounded-md border bg-popover p-1 text-popover-foreground shadow-md",
+      "z-50 min-w-[8rem] rounded-md border border-border-default bg-popover p-1 text-popover-foreground shadow-md",
       className,
     )}
     {...props}
@@ -58,7 +58,7 @@ const DropdownMenuContent = React.forwardRef<
       ref={ref}
       sideOffset={sideOffset}
       className={cn(
-        "z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover p-1 text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        "z-50 min-w-[8rem] overflow-hidden rounded-md border border-border-default bg-popover p-1 text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
         className,
       )}
       {...props}
diff --git a/src/components/ui/input.tsx b/src/components/ui/input.tsx
index cb7a63b..c0943a8 100644
--- a/src/components/ui/input.tsx
+++ b/src/components/ui/input.tsx
@@ -9,7 +9,7 @@ const Input = React.forwardRef<HTMLInputElement, InputProps>(
       <input
         type={type}
         className={cn(
-          "flex h-9 w-full rounded-md border border-input bg-background px-3 py-1 text-sm shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
+          "flex h-9 w-full rounded-md border border-border-default bg-background px-3 py-1 text-sm shadow-sm transition-colors file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:border-border-active disabled:cursor-not-allowed disabled:opacity-50",
           className,
         )}
         ref={ref}
diff --git a/src/components/ui/select.tsx b/src/components/ui/select.tsx
index bf2025f..9f3b88f 100644
--- a/src/components/ui/select.tsx
+++ b/src/components/ui/select.tsx
@@ -16,7 +16,7 @@ const SelectTrigger = React.forwardRef<
   <SelectPrimitive.Trigger
     ref={ref}
     className={cn(
-      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-input bg-background px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:ring-1 focus:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
+      "flex h-9 w-full items-center justify-between whitespace-nowrap rounded-md border border-border-default bg-background px-3 py-2 text-sm shadow-sm ring-offset-background placeholder:text-muted-foreground focus:outline-none focus:border-border-active disabled:cursor-not-allowed disabled:opacity-50",
       className,
     )}
     {...props}
@@ -37,7 +37,7 @@ const SelectContent = React.forwardRef<
     <SelectPrimitive.Content
       ref={ref}
       className={cn(
-        "relative z-50 min-w-[8rem] overflow-hidden rounded-md border bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
+        "relative z-50 min-w-[8rem] overflow-hidden rounded-md border border-border-default bg-popover text-popover-foreground shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2",
         className,
       )}
       position={position}
diff --git a/src/components/ui/textarea.tsx b/src/components/ui/textarea.tsx
index f880762..26900c6 100644
--- a/src/components/ui/textarea.tsx
+++ b/src/components/ui/textarea.tsx
@@ -8,7 +8,7 @@ const Textarea = React.forwardRef<HTMLTextAreaElement, TextareaProps>(
     return (
       <textarea
         className={cn(
-          "flex min-h-[80px] w-full rounded-md border border-input bg-background px-3 py-2 text-sm shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:cursor-not-allowed disabled:opacity-50",
+          "flex min-h-[80px] w-full rounded-md border border-border-default bg-background px-3 py-2 text-sm shadow-sm placeholder:text-muted-foreground focus-visible:outline-none focus-visible:border-border-active disabled:cursor-not-allowed disabled:opacity-50",
           className,
         )}
         ref={ref}
diff --git a/src/index.css b/src/index.css
index 72e555f..d8fbc42 100644
--- a/src/index.css
+++ b/src/index.css
@@ -122,3 +122,33 @@ html.dark ::-webkit-scrollbar-thumb:hover {
 *:focus-visible {
   @apply outline-2 outline-blue-500 outline-offset-2;
 }
+
+/* 统一边框设计系统 - 使用工具类定义 */
+@layer utilities {
+  /* 默认边框：1px，使用主题边框颜色 */
+  .border-default {
+    border-width: 1px;
+    border-color: hsl(var(--border));
+  }
+
+  /* 激活边框：2px，使用主色 */
+  .border-active {
+    border-width: 2px;
+  }
+
+  .border-border-default {
+    border-color: hsl(var(--border));
+  }
+
+  .border-border-active {
+    border-color: hsl(var(--primary));
+  }
+
+  .border-border-hover {
+    border-color: hsl(var(--primary) / 0.4);
+  }
+
+  .border-border-dragging {
+    border-color: hsl(var(--primary) / 0.6);
+  }
+}