diff --git a/frontend/src/lib/components/DocumentCard.svelte b/frontend/src/lib/components/DocumentCard.svelte
index 952a0fd..1af2a20 100644
--- a/frontend/src/lib/components/DocumentCard.svelte
+++ b/frontend/src/lib/components/DocumentCard.svelte
@@ -57,8 +57,8 @@
 <button
   onclick={handleClick}
   aria-label={doc.title || '문서 선택'}
-  class="flex items-stretch bg-[var(--surface)] border rounded-lg hover:border-[var(--accent)] transition-colors group w-full text-left overflow-hidden
-    {selected ? 'border-[var(--accent)] bg-[var(--accent)]/5' : 'border-[var(--border)]'}"
+  class="flex items-stretch bg-surface border rounded-lg hover:border-accent transition-colors group w-full text-left overflow-hidden
+    {selected ? 'border-accent bg-accent/5' : 'border-default'}"
 >
   <!-- domain 색상 바 -->
   <div class="w-1 shrink-0 rounded-l-lg" style="background: {domainColor}"></div>
@@ -66,21 +66,21 @@
   <!-- 콘텐츠 -->
   <div class="flex items-start gap-3 p-3 flex-1 min-w-0">
   <!-- 포맷 아이콘 -->
-  <div class="shrink-0 mt-0.5 text-[var(--text-dim)] group-hover:text-[var(--accent)]">
+  <div class="shrink-0 mt-0.5 text-dim group-hover:text-accent">
     <FormatIcon format={doc.file_format} size={18} />
   </div>
 
   <!-- 메인 콘텐츠 -->
   <div class="flex-1 min-w-0">
-    <p class="text-sm font-medium truncate group-hover:text-[var(--accent)]">
+    <p class="text-sm font-medium truncate group-hover:text-accent">
       {doc.title || '제목 없음'}
     </p>
     {#if doc.ai_summary}
-      <p class="text-xs text-[var(--text-dim)] truncate mt-0.5">{doc.ai_summary.replace(/[*#_`~]/g, '').slice(0, 100)}</p>
+      <p class="text-xs text-dim truncate mt-0.5">{doc.ai_summary.replace(/[*#_`~]/g, '').slice(0, 100)}</p>
     {/if}
     <div class="flex items-center gap-2 mt-1.5 flex-wrap">
       {#if showDomain && doc.ai_domain}
-        <span class="text-[10px] text-[var(--text-dim)]">
+        <span class="text-[10px] text-dim">
           {doc.ai_domain.replace('Knowledge/', '')}{doc.ai_sub_group ? ` / ${doc.ai_sub_group}` : ''}
         </span>
       {/if}
@@ -100,16 +100,16 @@
       <span class="text-blue-400">📰</span>
     {/if}
     {#if doc.score !== undefined}
-      <span class="text-[var(--accent)] font-medium">{(doc.score * 100).toFixed(0)}%</span>
+      <span class="text-accent font-medium">{(doc.score * 100).toFixed(0)}%</span>
     {/if}
     {#if doc.data_origin}
       <span class="px-1.5 py-0.5 rounded {doc.data_origin === 'work' ? 'bg-blue-900/30 text-blue-400' : 'bg-gray-800 text-gray-400'}">
         {doc.data_origin}
       </span>
     {/if}
-    <span class="text-[var(--text-dim)]">{formatDate(doc.created_at)}</span>
+    <span class="text-dim">{formatDate(doc.created_at)}</span>
     {#if doc.file_size}
-      <span class="text-[var(--text-dim)]">{formatSize(doc.file_size)}</span>
+      <span class="text-dim">{formatSize(doc.file_size)}</span>
     {/if}
   </div>
   </div>
diff --git a/frontend/src/lib/components/DocumentTable.svelte b/frontend/src/lib/components/DocumentTable.svelte
index c658d8a..1783ebf 100644
--- a/frontend/src/lib/components/DocumentTable.svelte
+++ b/frontend/src/lib/components/DocumentTable.svelte
@@ -94,15 +94,15 @@
 
 <div class="w-full">
   <!-- 헤더 -->
-  <div class="flex items-center gap-1 px-2 py-1.5 border-b border-[var(--border)] text-[10px] text-[var(--text-dim)] uppercase tracking-wider">
+  <div class="flex items-center gap-1 px-2 py-1.5 border-b border-default text-[10px] text-dim uppercase tracking-wider">
     {#each columns as col}
       <button
         onclick={() => toggleSort(col.key)}
-        class="flex items-center gap-1 {col.flex || col.width || ''} px-1 hover:text-[var(--text)] transition-colors text-left"
+        class="flex items-center gap-1 {col.flex || col.width || ''} px-1 hover:text-text transition-colors text-left"
       >
         {col.label}
         {#if sortKey === col.key}
-          <span class="text-[var(--accent)]">{sortOrder === 'asc' ? '↑' : '↓'}</span>
+          <span class="text-accent">{sortOrder === 'asc' ? '↑' : '↓'}</span>
         {/if}
       </button>
     {/each}
@@ -112,29 +112,29 @@
   {#each sortedItems() as doc}
     <button
       onclick={() => handleClick(doc)}
-      class="flex items-center gap-1 px-2 py-1.5 w-full text-left border-b border-[var(--border)]/30 hover:bg-[var(--surface)] transition-colors group
-        {selectedId === doc.id ? 'bg-[var(--accent)]/5 border-l-2 border-l-[var(--accent)]' : ''}"
+      class="flex items-center gap-1 px-2 py-1.5 w-full text-left border-b border-default/30 hover:bg-surface transition-colors group
+        {selectedId === doc.id ? 'bg-accent/5 border-l-2 border-l-accent' : ''}"
     >
       <!-- 이름 -->
       <div class="flex-1 flex items-center gap-2 min-w-0">
         <span class="w-1 h-4 rounded-full shrink-0" style="background: {getDomainColor(doc.ai_domain)}"></span>
         <FormatIcon format={doc.file_format} size={14} />
-        <span class="text-xs truncate group-hover:text-[var(--accent)]">{doc.title || '제목 없음'}</span>
+        <span class="text-xs truncate group-hover:text-accent">{doc.title || '제목 없음'}</span>
       </div>
       <!-- 분류 -->
-      <div class="w-48 text-[10px] text-[var(--text-dim)] truncate">
+      <div class="w-48 text-[10px] text-dim truncate">
         {doc.ai_domain?.replace('Industrial_Safety/', 'IS/') || '-'}
       </div>
       <!-- 타입 -->
-      <div class="w-24 text-[10px] text-[var(--text-dim)]">
+      <div class="w-24 text-[10px] text-dim">
         {doc.document_type || doc.file_format?.toUpperCase() || '-'}
       </div>
       <!-- 크기 -->
-      <div class="w-20 text-[10px] text-[var(--text-dim)] text-right">
+      <div class="w-20 text-[10px] text-dim text-right">
         {formatSize(doc.file_size)}
       </div>
       <!-- 등록일 -->
-      <div class="w-20 text-[10px] text-[var(--text-dim)] text-right">
+      <div class="w-20 text-[10px] text-dim text-right">
         {formatDate(doc.created_at)}
       </div>
     </button>
diff --git a/frontend/src/lib/components/Sidebar.svelte b/frontend/src/lib/components/Sidebar.svelte
index c47ec0f..60dddc2 100644
--- a/frontend/src/lib/components/Sidebar.svelte
+++ b/frontend/src/lib/components/Sidebar.svelte
@@ -68,9 +68,9 @@
   let totalCount = $derived(tree.reduce((sum, n) => sum + n.count, 0));
 </script>
 
-<aside class="h-full flex flex-col bg-[var(--sidebar-bg)] border-r border-[var(--border)] overflow-y-auto">
-  <div class="px-4 py-3 border-b border-[var(--border)]">
-    <h2 class="text-sm font-semibold text-[var(--text-dim)] uppercase tracking-wider">분류</h2>
+<aside class="h-full flex flex-col bg-sidebar border-r border-default overflow-y-auto">
+  <div class="px-4 py-3 border-b border-default">
+    <h2 class="text-sm font-semibold text-dim uppercase tracking-wider">분류</h2>
   </div>
 
   <!-- 전체 문서 -->
@@ -78,14 +78,14 @@
     <button
       onclick={() => navigate(null)}
       class="w-full flex items-center justify-between px-3 py-2 rounded-md text-sm transition-colors
-        {!activeDomain ? 'bg-[var(--accent)]/15 text-[var(--accent)]' : 'text-[var(--text)] hover:bg-[var(--surface)]'}"
+        {!activeDomain ? 'bg-accent/15 text-accent' : 'text-text hover:bg-surface'}"
     >
       <span class="flex items-center gap-2">
         <FolderOpen size={16} />
         전체 문서
       </span>
       {#if totalCount > 0}
-        <span class="text-xs text-[var(--text-dim)]">{totalCount}</span>
+        <span class="text-xs text-dim">{totalCount}</span>
       {/if}
     </button>
   </div>
@@ -94,7 +94,7 @@
   <nav class="flex-1 px-2 py-2">
     {#if loading}
       {#each Array(5) as _}
-        <div class="h-8 bg-[var(--surface)] rounded-md animate-pulse mx-1 mb-1"></div>
+        <div class="h-8 bg-surface rounded-md animate-pulse mx-1 mb-1"></div>
       {/each}
     {:else}
       {#each tree as node}
@@ -109,7 +109,7 @@
             {#if hasChildren}
               <button
                 onclick={() => toggleExpand(n.path)}
-                class="p-0.5 rounded hover:bg-[var(--surface)] text-[var(--text-dim)]"
+                class="p-0.5 rounded hover:bg-surface text-dim"
               >
                 {#if isExpanded}
                   <ChevronDown size={14} />
@@ -124,7 +124,7 @@
             <button
               onclick={() => navigate(n.path)}
               class="flex-1 flex items-center justify-between px-2 py-1.5 rounded-md text-sm transition-colors
-                {isActive ? 'bg-[var(--accent)]/15 text-[var(--accent)]' : isParent ? 'text-[var(--text)]' : 'text-[var(--text-dim)] hover:bg-[var(--surface)] hover:text-[var(--text)]'}"
+                {isActive ? 'bg-accent/15 text-accent' : isParent ? 'text-text' : 'text-dim hover:bg-surface hover:text-text'}"
             >
               <span class="flex items-center gap-2">
                 {#if depth === 0}
@@ -132,7 +132,7 @@
                 {/if}
                 <span class="truncate">{n.name}</span>
               </span>
-              <span class="text-xs text-[var(--text-dim)] shrink-0 ml-2">{n.count}</span>
+              <span class="text-xs text-dim shrink-0 ml-2">{n.count}</span>
             </button>
           </div>
 
@@ -148,33 +148,33 @@
   </nav>
 
   <!-- 스마트 그룹 -->
-  <div class="px-2 py-2 border-t border-[var(--border)]">
-    <h3 class="px-3 py-1 text-[10px] font-semibold text-[var(--text-dim)] uppercase tracking-wider">스마트 그룹</h3>
+  <div class="px-2 py-2 border-t border-default">
+    <h3 class="px-3 py-1 text-[10px] font-semibold text-dim uppercase tracking-wider">스마트 그룹</h3>
     <button
       onclick={() => goto('/documents', { noScroll: true })}
-      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-[var(--text-dim)] hover:bg-[var(--surface)] hover:text-[var(--text)]"
+      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-dim hover:bg-surface hover:text-text"
     >
       <Clock size={14} /> 최근 7일
     </button>
     <button
       onclick={() => { const p = new URLSearchParams(); p.set('source', 'law_monitor'); goto(`/documents?${p}`, { noScroll: true }); }}
-      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-[var(--text-dim)] hover:bg-[var(--surface)] hover:text-[var(--text)]"
+      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-dim hover:bg-surface hover:text-text"
     >
       <Scale size={14} /> 법령 알림
     </button>
     <button
       onclick={() => { const p = new URLSearchParams(); p.set('source', 'email'); goto(`/documents?${p}`, { noScroll: true }); }}
-      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-[var(--text-dim)] hover:bg-[var(--surface)] hover:text-[var(--text)]"
+      class="w-full flex items-center gap-2 px-3 py-1.5 rounded-md text-sm text-dim hover:bg-surface hover:text-text"
     >
       <Mail size={14} /> 이메일
     </button>
   </div>
 
   <!-- Inbox -->
-  <div class="px-2 py-2 border-t border-[var(--border)]">
+  <div class="px-2 py-2 border-t border-default">
     <a
       href="/inbox"
-      class="flex items-center justify-between px-3 py-2 rounded-md text-sm text-[var(--text)] hover:bg-[var(--surface)] transition-colors"
+      class="flex items-center justify-between px-3 py-2 rounded-md text-sm text-text hover:bg-surface transition-colors"
     >
       <span class="flex items-center gap-2">
         <Inbox size={16} />