diff --git a/frontend/src/components/server/CloudServerImport.tsx b/frontend/src/components/server/CloudServerImport.tsx
index 3d8f056..ffcb42d 100644
--- a/frontend/src/components/server/CloudServerImport.tsx
+++ b/frontend/src/components/server/CloudServerImport.tsx
@@ -1,6 +1,6 @@
 import { useState, useEffect } from 'react';
 import { Button } from '@/components/ui/button';
-import { Card, CardContent, CardHeader, CardTitle } from '@/components/ui/card';
+import { Card, CardContent } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
 import { Checkbox } from '@/components/ui/checkbox';
 import {
@@ -8,6 +8,7 @@ import {
   DialogContent,
   DialogHeader,
   DialogTitle,
+  DialogDescription,
   DialogFooter,
 } from '@/components/ui/dialog';
 import {
@@ -82,8 +83,8 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
   };
 
   const handleServerToggle = (serverId: string) => {
-    setSelectedServers(prev => 
-      prev.includes(serverId) 
+    setSelectedServers(prev =>
+      prev.includes(serverId)
         ? prev.filter(id => id !== serverId)
         : [...prev, serverId]
     );
@@ -98,7 +99,7 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
   };
 
   const handleImport = () => {
-    // Mock import action
+    // 云主机发现功能尚未实现，暂以空操作占位
     setTimeout(() => {
       onClose();
       setStep(1);
@@ -124,9 +125,10 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
 
   return (
     <Dialog open={open} onOpenChange={handleClose}>
-      <DialogContent className="max-w-3xl bg-slate-900 border-slate-700 text-slate-100">
+      <DialogContent className="max-w-3xl bg-[var(--dg-bg-primary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]">
         <DialogHeader>
           <DialogTitle className="text-xl">导入云主机</DialogTitle>
+          <DialogDescription className="sr-only">从云平台批量导入主机资产</DialogDescription>
         </DialogHeader>
 
         {/* Step Indicator */}
@@ -134,18 +136,18 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
           {steps.map((s, index) => (
             <div key={s.id} className="flex items-center">
               <div className={`flex items-center gap-2 px-4 py-2 rounded-lg ${
-                step === s.id 
-                  ? 'bg-blue-600 text-white' 
-                  : step > s.id 
-                    ? 'bg-emerald-600/20 text-emerald-400' 
-                    : 'bg-slate-800 text-slate-500'
+                step === s.id
+                  ? 'bg-blue-600 text-white'
+                  : step > s.id
+                    ? 'bg-emerald-600/20 text-emerald-400'
+                    : 'bg-[var(--dg-bg-secondary)] text-[var(--dg-text-muted)]'
               }`}>
                 <s.icon className="h-4 w-4" />
                 <span className="text-sm font-medium">{s.title}</span>
                 {step > s.id && <Check className="h-4 w-4 ml-1" />}
               </div>
               {index < steps.length - 1 && (
-                <ChevronRight className="h-5 w-5 text-slate-600 mx-2" />
+                <ChevronRight className="h-5 w-5 text-[var(--dg-text-muted)] mx-2" />
               )}
             </div>
           ))}
@@ -154,15 +156,15 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
         {/* Step 1: Select Cloud Provider */}
         {step === 1 && (
           <div className="space-y-4">
-            <p className="text-slate-400 text-sm">请选择要导入云主机的云平台</p>
+            <p className="text-[var(--dg-text-secondary)] text-sm">请选择要导入云主机的云平台</p>
             <div className="grid grid-cols-3 gap-4">
               {cloudProviders.map((provider) => (
                 <Card
                   key={provider.id}
                   className={`cursor-pointer transition-all ${
                     selectedProvider === provider.id
-                      ? 'border-blue-500 ring-2 ring-blue-500/30 bg-slate-800'
-                      : 'border-slate-700 hover:border-slate-600 bg-slate-800/50'
+                      ? 'border-blue-500 ring-2 ring-blue-500/30 bg-[var(--dg-bg-secondary)]'
+                      : 'border-[var(--dg-border)] hover:border-blue-500 bg-[var(--dg-bg-secondary)]'
                   }`}
                   onClick={() => setSelectedProvider(provider.id)}
                 >
@@ -170,7 +172,7 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
                     <div className={`w-10 h-10 rounded-lg ${provider.color} flex items-center justify-center text-white font-bold text-sm`}>
                       {provider.icon}
                     </div>
-                    <span className="font-medium text-slate-200">{provider.name}</span>
+                    <span className="font-medium text-[var(--dg-text-primary)]">{provider.name}</span>
                   </CardContent>
                 </Card>
               ))}
@@ -182,13 +184,13 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
         {step === 2 && (
           <div className="space-y-4">
             <div className="flex items-center justify-between">
-              <p className="text-slate-400 text-sm">请选择访问凭据（AccessKey）</p>
-              <Button variant="outline" size="sm" className="border-slate-700 text-slate-300">
+              <p className="text-[var(--dg-text-secondary)] text-sm">请选择访问凭据（AccessKey）</p>
+              <Button variant="outline" size="sm" className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
                 <RefreshCw className="h-3 w-3 mr-1" />
                 刷新
               </Button>
             </div>
-            
+
             {filteredAccounts.length > 0 ? (
               <div className="space-y-2 max-h-[300px] overflow-y-auto">
                 {filteredAccounts.map((account) => (
@@ -196,8 +198,8 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
                     key={account.id}
                     className={`cursor-pointer transition-all ${
                       selectedAccount === account.id
-                        ? 'border-blue-500 ring-1 ring-blue-500/30 bg-slate-800'
-                        : 'border-slate-700 hover:border-slate-600 bg-slate-800/50'
+                        ? 'border-blue-500 ring-1 ring-blue-500/30 bg-[var(--dg-bg-secondary)]'
+                        : 'border-[var(--dg-border)] hover:border-blue-500 bg-[var(--dg-bg-secondary)]'
                     }`}
                     onClick={() => setSelectedAccount(account.id)}
                   >
@@ -205,25 +207,25 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
                       <div className="flex items-center gap-3">
                         <Key className="h-5 w-5 text-blue-400" />
                         <div>
-                          <p className="font-medium text-slate-200">{account.name}</p>
-                          <p className="text-xs text-slate-500">{(account.access_key || account.accessKey || '').slice(0, 20)}...</p>
+                          <p className="font-medium text-[var(--dg-text-primary)]">{account.name}</p>
+                          <p className="text-xs text-[var(--dg-text-muted)]">{(account.access_key || account.accessKey || '').slice(0, 20)}...</p>
                         </div>
                       </div>
                       <div className="text-right">
                         <Badge className="bg-emerald-500/20 text-emerald-400 border-0">
                           {account.region_count ?? account.regionCount ?? 0} 区域
                         </Badge>
-                        <p className="text-xs text-slate-500 mt-1">{account.server_count ?? account.serverCount ?? 0} 服务器</p>
+                        <p className="text-xs text-[var(--dg-text-muted)] mt-1">{account.server_count ?? account.serverCount ?? 0} 服务器</p>
                       </div>
                     </CardContent>
                   </Card>
                 ))}
               </div>
             ) : (
-              <div className="text-center py-8 text-slate-500">
+              <div className="text-center py-8 text-[var(--dg-text-muted)]">
                 <Key className="h-12 w-12 mx-auto mb-3 opacity-50" />
                 <p>该云平台暂无有效的访问凭据</p>
-                <Button variant="outline" className="mt-3 border-slate-700 text-slate-300">
+                <Button variant="outline" className="mt-3 border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
                   添加访问凭据
                 </Button>
               </div>
@@ -235,9 +237,9 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
         {step === 3 && (
           <div className="space-y-4">
             <div className="flex items-center justify-between">
-              <p className="text-slate-400 text-sm">请选择要导入的云主机</p>
+              <p className="text-[var(--dg-text-secondary)] text-sm">请选择要导入的云主机</p>
               <div className="flex items-center gap-2">
-                <Button variant="outline" size="sm" className="border-slate-700 text-slate-300" onClick={handleSelectAll} disabled={cloudServers.length === 0}>
+                <Button variant="outline" size="sm" className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]" onClick={handleSelectAll} disabled={cloudServers.length === 0}>
                   {selectedServers.length === cloudServers.length && cloudServers.length > 0 ? '取消全选' : '全选'}
                 </Button>
                 <Badge className="bg-blue-500/20 text-blue-400 border-0">
@@ -249,41 +251,41 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
             {isLoading ? (
               <div className="text-center py-12">
                 <RefreshCw className="h-8 w-8 mx-auto mb-3 animate-spin text-blue-400" />
-                <p className="text-slate-400">正在获取云主机列表...</p>
+                <p className="text-[var(--dg-text-secondary)]">正在获取云主机列表...</p>
               </div>
             ) : (
-              <div className="border rounded-lg border-slate-700 overflow-hidden max-h-[350px] overflow-y-auto">
+              <div className="border rounded-lg border-[var(--dg-border)] overflow-hidden max-h-[350px] overflow-y-auto">
                 <table className="w-full">
-                  <thead className="bg-slate-800 sticky top-0">
+                  <thead className="bg-[var(--dg-bg-secondary)] sticky top-0">
                     <tr>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400 w-10">
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)] w-10">
                         <Checkbox
                           checked={selectedServers.length === cloudServers.length && cloudServers.length > 0}
                           onCheckedChange={handleSelectAll}
                         />
                       </th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">实例ID</th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">主机名</th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">IP地址</th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">区域</th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">规格</th>
-                      <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">状态</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">实例ID</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">主机名</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">IP地址</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">区域</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">规格</th>
+                      <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">状态</th>
                     </tr>
                   </thead>
-                  <tbody className="divide-y divide-slate-800">
+                  <tbody className="divide-y divide-[var(--dg-border)]">
                     {cloudServers.length === 0 ? (
                       <tr>
                         <td colSpan={7} className="px-3 py-12 text-center">
-                          <Server className="h-10 w-10 mx-auto mb-3 text-slate-600" />
-                          <p className="text-slate-500">暂无云主机</p>
-                          <p className="text-xs text-slate-600 mt-1">云主机发现功能尚未实现，请手动添加服务器</p>
+                          <Server className="h-10 w-10 mx-auto mb-3 text-[var(--dg-text-muted)]" />
+                          <p className="text-[var(--dg-text-muted)]">暂无云主机</p>
+                          <p className="text-xs text-[var(--dg-text-muted)] mt-1">云主机发现功能尚未实现，请手动添加服务器</p>
                         </td>
                       </tr>
                     ) : (
                       cloudServers.map((server) => (
                         <tr
                           key={server.id}
-                          className={`hover:bg-slate-800/50 ${selectedServers.includes(server.id) ? 'bg-blue-500/10' : ''}`}
+                          className={`hover:bg-[var(--dg-bg-hover)] ${selectedServers.includes(server.id) ? 'bg-blue-500/10' : ''}`}
                         >
                           <td className="px-3 py-2">
                             <Checkbox
@@ -291,11 +293,11 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
                               onCheckedChange={() => handleServerToggle(server.id)}
                             />
                           </td>
-                          <td className="px-3 py-2 text-sm text-slate-300">{server.name}</td>
-                          <td className="px-3 py-2 text-sm text-slate-200">{server.hostname}</td>
-                          <td className="px-3 py-2 text-sm text-slate-400">{server.ip}</td>
-                          <td className="px-3 py-2 text-sm text-slate-400">{server.region}</td>
-                          <td className="px-3 py-2 text-sm text-slate-400">{server.spec}</td>
+                          <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{server.name}</td>
+                          <td className="px-3 py-2 text-sm text-[var(--dg-text-primary)]">{server.hostname}</td>
+                          <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{server.ip}</td>
+                          <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{server.region}</td>
+                          <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{server.spec}</td>
                           <td className="px-3 py-2">
                             <Badge
                               variant="outline"
@@ -321,19 +323,19 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
         <DialogFooter className="flex justify-between items-center">
           <div>
             {step > 1 && (
-              <Button variant="outline" onClick={handleBack} className="border-slate-700 text-slate-300">
+              <Button variant="outline" onClick={handleBack} className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
                 <ChevronLeft className="h-4 w-4 mr-1" />
                 上一步
               </Button>
             )}
           </div>
           <div className="flex gap-2">
-            <Button variant="outline" onClick={handleClose} className="border-slate-700 text-slate-300">
+            <Button variant="outline" onClick={handleClose} className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
               取消
             </Button>
             {step < 3 ? (
-              <Button 
-                onClick={handleNext} 
+              <Button
+                onClick={handleNext}
                 disabled={(step === 1 && !selectedProvider) || (step === 2 && !selectedAccount)}
                 className="bg-blue-600 hover:bg-blue-700"
               >
@@ -341,7 +343,7 @@ export function CloudServerImport({ open, onClose }: CloudServerImportProps) {
                 <ChevronRight className="h-4 w-4 ml-1" />
               </Button>
             ) : (
-              <Button 
+              <Button
                 onClick={handleImport}
                 disabled={selectedServers.length === 0}
                 className="bg-emerald-600 hover:bg-emerald-700"
diff --git a/frontend/src/components/server/ExcelServerImport.tsx b/frontend/src/components/server/ExcelServerImport.tsx
index bc47cd4..ca9f6c6 100644
--- a/frontend/src/components/server/ExcelServerImport.tsx
+++ b/frontend/src/components/server/ExcelServerImport.tsx
@@ -4,15 +4,15 @@ import { Button } from '@/components/ui/button';
 import { Card, CardContent } from '@/components/ui/card';
 import { Badge } from '@/components/ui/badge';
 import { Input } from '@/components/ui/input';
-import { 
-  Dialog, 
-  DialogContent, 
-  DialogHeader, 
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
   DialogTitle,
   DialogDescription,
   DialogFooter,
 } from '@/components/ui/dialog';
-import { 
+import {
   Download,
   Upload,
   FileSpreadsheet,
@@ -271,7 +271,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
 
   return (
     <Dialog open={open} onOpenChange={handleClose}>
-      <DialogContent className="max-w-3xl bg-slate-900 border-slate-700 text-slate-100">
+      <DialogContent className="max-w-3xl bg-[var(--dg-bg-primary)] border-[var(--dg-border)] text-[var(--dg-text-primary)]">
         <DialogHeader>
           <DialogTitle className="text-xl">Excel导入服务器</DialogTitle>
           <DialogDescription className="sr-only">通过 CSV 文件批量导入服务器资产</DialogDescription>
@@ -282,19 +282,19 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
           {steps.map((s, index) => (
             <div key={s.id} className="flex items-center">
               <div className={`flex items-center justify-center w-8 h-8 rounded-full ${
-                step === s.id 
-                  ? 'bg-blue-600 text-white' 
-                  : step > s.id 
-                    ? 'bg-emerald-600 text-white' 
-                    : 'bg-slate-800 text-slate-500'
+                step === s.id
+                  ? 'bg-blue-600 text-white'
+                  : step > s.id
+                    ? 'bg-emerald-600 text-white'
+                    : 'bg-[var(--dg-bg-secondary)] text-[var(--dg-text-muted)]'
               }`}>
                 {step > s.id ? <Check className="h-4 w-4" /> : s.id}
               </div>
-              <span className={`ml-2 text-sm ${step === s.id ? 'text-slate-200' : 'text-slate-500'}`}>
+              <span className={`ml-2 text-sm ${step === s.id ? 'text-[var(--dg-text-primary)]' : 'text-[var(--dg-text-muted)]'}`}>
                 {s.title}
               </span>
               {index < steps.length - 1 && (
-                <div className="w-12 h-0.5 bg-slate-700 mx-3" />
+                <div className="w-12 h-0.5 bg-[var(--dg-border)] mx-3" />
               )}
             </div>
           ))}
@@ -304,7 +304,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
         {step === 1 && (
           <div className="space-y-6">
             {/* Download Template */}
-            <Card className="bg-slate-800 border-slate-700">
+            <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
               <CardContent className="p-4">
                 <div className="flex items-center justify-between">
                   <div className="flex items-center gap-3">
@@ -312,11 +312,11 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
                       <FileSpreadsheet className="h-5 w-5 text-emerald-400" />
                     </div>
                     <div>
-                      <p className="font-medium text-slate-200">主机导入模板</p>
-                      <p className="text-xs text-slate-500">下载Excel模板，填写服务器信息后上传</p>
+                      <p className="font-medium text-[var(--dg-text-primary)]">主机导入模板</p>
+                      <p className="text-xs text-[var(--dg-text-muted)]">下载Excel模板，填写服务器信息后上传</p>
                     </div>
                   </div>
-                  <Button variant="outline" className="border-slate-700 text-slate-300" onClick={downloadTemplate}>
+                  <Button variant="outline" className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]" onClick={downloadTemplate}>
                     <Download className="h-4 w-4 mr-2" />
                     下载模板
                   </Button>
@@ -326,11 +326,11 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
 
             {/* Region Selection */}
             <div>
-              <label className="block text-sm font-medium text-slate-300 mb-2">选择区域</label>
+              <label className="block text-sm font-medium text-[var(--dg-text-secondary)] mb-2">选择区域</label>
               <select
                 value={selectedRegion}
                 onChange={(e) => setSelectedRegion(e.target.value)}
-                className="w-full px-3 py-2 bg-slate-800 border border-slate-700 rounded-md text-slate-100 text-sm"
+                className="w-full px-3 py-2 bg-[var(--dg-bg-secondary)] border border-[var(--dg-border)] rounded-md text-[var(--dg-text-primary)] text-sm"
               >
                 <option value="">请选择区域</option>
                 {regions.map((region) => (
@@ -343,21 +343,21 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
 
             {/* Connection Method */}
             <div>
-              <label className="block text-sm font-medium text-slate-300 mb-2">连接方式</label>
+              <label className="block text-sm font-medium text-[var(--dg-text-secondary)] mb-2">连接方式</label>
               <div className="grid grid-cols-2 gap-4">
                 {connectionMethods.map((method) => (
                   <Card
                     key={method.id}
                     className={`cursor-pointer transition-all ${
                       connectionMethod === method.id
-                        ? 'border-blue-500 ring-1 ring-blue-500/30 bg-slate-800'
-                        : 'border-slate-700 hover:border-slate-600 bg-slate-800/50'
+                        ? 'border-blue-500 ring-1 ring-blue-500/30 bg-[var(--dg-bg-secondary)]'
+                        : 'border-[var(--dg-border)] hover:border-blue-500 bg-[var(--dg-bg-secondary)]'
                     }`}
                     onClick={() => setConnectionMethod(method.id)}
                   >
                     <CardContent className="p-3">
-                      <p className="font-medium text-slate-200">{method.name}</p>
-                      <p className="text-xs text-slate-500">{method.description}</p>
+                      <p className="font-medium text-[var(--dg-text-primary)]">{method.name}</p>
+                      <p className="text-xs text-[var(--dg-text-muted)]">{method.description}</p>
                     </CardContent>
                   </Card>
                 ))}
@@ -369,12 +369,12 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
         {/* Step 2: Upload */}
         {step === 2 && (
           <div className="space-y-6">
-            <div 
-              className="border-2 border-dashed border-slate-700 rounded-lg p-8 text-center hover:border-blue-500/50 transition-colors"
+            <div
+              className="border-2 border-dashed border-[var(--dg-border)] rounded-lg p-8 text-center hover:border-blue-500/50 transition-colors"
             >
-              <Upload className="h-12 w-12 mx-auto mb-4 text-slate-500" />
-              <p className="text-slate-300 mb-2">点击或拖拽文件到此处上传</p>
-              <p className="text-xs text-slate-500 mb-4">支持 CSV 格式文件（可点击左侧"下载模板"获取）</p>
+              <Upload className="h-12 w-12 mx-auto mb-4 text-[var(--dg-text-muted)]" />
+              <p className="text-[var(--dg-text-secondary)] mb-2">点击或拖拽文件到此处上传</p>
+              <p className="text-xs text-[var(--dg-text-muted)] mb-4">支持 CSV 格式文件（可点击左侧"下载模板"获取）</p>
               <Input
                 type="file"
                 accept=".csv,text/csv"
@@ -383,26 +383,26 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
                 id="excel-upload"
               />
               <label htmlFor="excel-upload">
-                <Button variant="outline" className="border-slate-700 text-slate-300" asChild>
+                <Button variant="outline" className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]" asChild>
                   <span>选择文件</span>
                 </Button>
               </label>
             </div>
 
             {selectedFile && (
-              <Card className="bg-slate-800 border-slate-700">
+              <Card className="bg-[var(--dg-bg-secondary)] border-[var(--dg-border)]">
                 <CardContent className="p-3 flex items-center justify-between">
                   <div className="flex items-center gap-3">
                     <FileSpreadsheet className="h-8 w-8 text-emerald-400" />
                     <div>
-                      <p className="text-sm text-slate-200">{selectedFile.name}</p>
-                      <p className="text-xs text-slate-500">{(selectedFile.size / 1024).toFixed(2)} KB</p>
+                      <p className="text-sm text-[var(--dg-text-primary)]">{selectedFile.name}</p>
+                      <p className="text-xs text-[var(--dg-text-muted)]">{(selectedFile.size / 1024).toFixed(2)} KB</p>
                     </div>
                   </div>
-                  <Button 
-                    variant="ghost" 
-                    size="icon" 
-                    className="text-slate-400 hover:text-red-400"
+                  <Button
+                    variant="ghost"
+                    size="icon"
+                    className="text-[var(--dg-text-muted)] hover:text-red-400"
                     onClick={() => setSelectedFile(null)}
                   >
                     <X className="h-4 w-4" />
@@ -414,7 +414,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
             {isUploading && (
               <div className="text-center py-4">
                 <div className="w-8 h-8 border-2 border-blue-500 border-t-transparent rounded-full animate-spin mx-auto mb-2" />
-                <p className="text-slate-400 text-sm">正在解析文件...</p>
+                <p className="text-[var(--dg-text-secondary)] text-sm">正在解析文件...</p>
               </div>
             )}
           </div>
@@ -424,7 +424,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
         {step === 3 && (
           <div className="space-y-4">
             <div className="flex items-center justify-between">
-              <p className="text-slate-400 text-sm">数据预览</p>
+              <p className="text-[var(--dg-text-secondary)] text-sm">数据预览</p>
               <div className="flex items-center gap-2">
                 <Badge className="bg-emerald-500/20 text-emerald-400 border-0">
                   <Check className="h-3 w-3 mr-1" />
@@ -445,26 +445,26 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
               </div>
             </div>
 
-            <div className="border rounded-lg border-slate-700 overflow-hidden max-h-[350px] overflow-y-auto">
+            <div className="border rounded-lg border-[var(--dg-border)] overflow-hidden max-h-[350px] overflow-y-auto">
               <table className="w-full">
-                <thead className="bg-slate-800 sticky top-0">
+                <thead className="bg-[var(--dg-bg-secondary)] sticky top-0">
                   <tr>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">行号</th>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">主机名</th>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">IP地址</th>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">端口</th>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">用户名</th>
-                    <th className="px-3 py-2 text-left text-xs font-medium text-slate-400">状态</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">行号</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">主机名</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">IP地址</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">端口</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">用户名</th>
+                    <th className="px-3 py-2 text-left text-xs font-medium text-[var(--dg-text-secondary)]">状态</th>
                   </tr>
                 </thead>
-                <tbody className="divide-y divide-slate-800">
+                <tbody className="divide-y divide-[var(--dg-border)]">
                   {previewData.map((row) => (
-                    <tr key={row.row} className="hover:bg-slate-800/50">
-                      <td className="px-3 py-2 text-sm text-slate-500">{row.row}</td>
-                      <td className="px-3 py-2 text-sm text-slate-200">{row.hostname || '-'}</td>
-                      <td className="px-3 py-2 text-sm text-slate-300">{row.ip}</td>
-                      <td className="px-3 py-2 text-sm text-slate-300">{row.port}</td>
-                      <td className="px-3 py-2 text-sm text-slate-300">{row.username}</td>
+                    <tr key={row.row} className="hover:bg-[var(--dg-bg-hover)]">
+                      <td className="px-3 py-2 text-sm text-[var(--dg-text-muted)]">{row.row}</td>
+                      <td className="px-3 py-2 text-sm text-[var(--dg-text-primary)]">{row.hostname || '-'}</td>
+                      <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{row.ip}</td>
+                      <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{row.port}</td>
+                      <td className="px-3 py-2 text-sm text-[var(--dg-text-secondary)]">{row.username}</td>
                       <td className="px-3 py-2">
                         <div className="flex items-center gap-1">
                           {row.status === 'valid' && (
@@ -508,19 +508,19 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
         <DialogFooter className="flex justify-between items-center">
           <div>
             {step > 1 && (
-              <Button variant="outline" onClick={handleBack} className="border-slate-700 text-slate-300">
+              <Button variant="outline" onClick={handleBack} className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
                 <ChevronLeft className="h-4 w-4 mr-1" />
                 上一步
               </Button>
             )}
           </div>
           <div className="flex gap-2">
-            <Button variant="outline" onClick={handleClose} className="border-slate-700 text-slate-300">
+            <Button variant="outline" onClick={handleClose} className="border-[var(--dg-border)] text-[var(--dg-text-secondary)]">
               取消
             </Button>
             {step < 3 ? (
-              <Button 
-                onClick={handleNext} 
+              <Button
+                onClick={handleNext}
                 disabled={(step === 1 && !selectedRegion) || (step === 2 && !selectedFile)}
                 className="bg-blue-600 hover:bg-blue-700"
               >
@@ -528,7 +528,7 @@ export function ExcelServerImport({ open, onClose }: ExcelServerImportProps) {
                 <ChevronRight className="h-4 w-4 ml-1" />
               </Button>
             ) : (
-              <Button 
+              <Button
                 onClick={handleImport}
                 disabled={isImporting || errorCount > 0 || validCount === 0}
                 className="bg-emerald-600 hover:bg-emerald-700"