diff --git a/src/components/business/construction/order-management/OrderDetailForm.tsx b/src/components/business/construction/order-management/OrderDetailForm.tsx
index 166402dd..c497074c 100644
--- a/src/components/business/construction/order-management/OrderDetailForm.tsx
+++ b/src/components/business/construction/order-management/OrderDetailForm.tsx
@@ -121,17 +121,18 @@ export default function OrderDetailForm({
   }, [orderId, router]);
 
   // 커스텀 헤더 액션 (view 모드에서 발주서 보기, 복제 버튼)
+  // 모바일: 아이콘만, sm 이상: 아이콘 + 텍스트
   const customHeaderActions = useMemo(() => {
     if (!isViewMode) return null;
     return (
       <>
-        <Button variant="outline" onClick={handleViewDocument}>
-          <Eye className="h-4 w-4 mr-2" />
-          발주서 보기
+        <Button variant="outline" onClick={handleViewDocument} size="sm" className="md:size-default">
+          <Eye className="h-4 w-4 md:mr-2" />
+          <span className="hidden md:inline">발주서 보기</span>
         </Button>
-        <Button variant="outline" onClick={handleDuplicate} disabled={isLoading}>
-          <Copy className="h-4 w-4 mr-2" />
-          복제
+        <Button variant="outline" onClick={handleDuplicate} disabled={isLoading} size="sm" className="md:size-default">
+          <Copy className="h-4 w-4 md:mr-2" />
+          <span className="hidden md:inline">복제</span>
         </Button>
       </>
     );
diff --git a/src/components/common/ScheduleCalendar/CalendarHeader.tsx b/src/components/common/ScheduleCalendar/CalendarHeader.tsx
index 5ca6d7b4..35c148bb 100644
--- a/src/components/common/ScheduleCalendar/CalendarHeader.tsx
+++ b/src/components/common/ScheduleCalendar/CalendarHeader.tsx
@@ -26,24 +26,75 @@ export function CalendarHeader({
     { value: 'month', label: '월' },
   ];
 
-  return (
-    <div className="flex flex-col gap-3 pb-3 border-b">
-      {/* PC: 타이틀 + 네비게이션 | 뷰전환 + 필터 (한 줄) */}
-      {/* 모바일: 타이틀 / 네비게이션 + 뷰전환 / 필터 (세 줄) */}
+  // 뷰 전환 버튼 렌더링 (재사용)
+  const renderViewTabs = (className?: string) => (
+    <div className={cn('flex rounded-md border', className)}>
+      {views.map((v) => (
+        <button
+          key={v.value}
+          onClick={() => onViewChange(v.value)}
+          className={cn(
+            'px-3 py-1 text-sm font-medium transition-colors',
+            'first:rounded-l-md last:rounded-r-md',
+            view === v.value
+              ? 'bg-primary text-primary-foreground'
+              : 'hover:bg-primary/10 text-foreground'
+          )}
+        >
+          {v.label}
+        </button>
+      ))}
+    </div>
+  );
 
-      {/* 1줄(모바일) / 좌측(PC): 타이틀 */}
+  return (
+    <div className="flex flex-col gap-2 pb-3 border-b">
+      {/* 모바일 전용: 타이틀 */}
       {titleSlot && (
         <div className="xl:hidden text-base font-semibold text-foreground">
           {titleSlot}
         </div>
       )}
 
-      {/* 2줄(모바일) / 전체(PC): 네비게이션 + 뷰전환 + 필터 */}
-      <div className="flex flex-col xl:flex-row xl:items-center xl:justify-between gap-3">
-        {/* 좌측: (PC에서만 타이틀) + 네비게이션 */}
+      {/* 모바일: 네비게이션 (1줄) + 뷰전환 (2줄) */}
+      <div className="flex xl:hidden flex-col gap-2">
+        {/* 1줄: 네비게이션 < 년월 > */}
+        <div className="flex items-center justify-center gap-1">
+          <Button
+            variant="outline"
+            size="icon"
+            className="h-7 w-7 shrink-0 hover:bg-primary/10"
+            onClick={onPrevMonth}
+          >
+            <ChevronLeft className="h-4 w-4" />
+          </Button>
+
+          <span className="text-sm font-bold text-center whitespace-nowrap px-1">
+            {formatYearMonth(currentDate)}
+          </span>
+
+          <Button
+            variant="outline"
+            size="icon"
+            className="h-7 w-7 shrink-0 hover:bg-primary/10"
+            onClick={onNextMonth}
+          >
+            <ChevronRight className="h-4 w-4" />
+          </Button>
+        </div>
+
+        {/* 2줄: 뷰 전환 탭 */}
+        <div className="flex justify-center">
+          {renderViewTabs()}
+        </div>
+      </div>
+
+      {/* PC: 타이틀 + 네비게이션 | 뷰전환 + 필터 (한 줄) */}
+      <div className="hidden xl:flex items-center justify-between">
+        {/* 좌측: 타이틀 + 네비게이션 */}
         <div className="flex items-center gap-4">
           {titleSlot && (
-            <span className="hidden xl:block text-base font-semibold text-foreground">
+            <span className="text-base font-semibold text-foreground">
               {titleSlot}
             </span>
           )}
@@ -70,54 +121,19 @@ export function CalendarHeader({
               <ChevronRight className="h-4 w-4" />
             </Button>
           </div>
-
-          {/* 모바일: 뷰 전환 탭 (네비게이션 옆) */}
-          <div className="flex xl:hidden rounded-md border">
-            {views.map((v) => (
-              <button
-                key={v.value}
-                onClick={() => onViewChange(v.value)}
-                className={cn(
-                  'px-4 py-1.5 text-sm font-medium transition-colors',
-                  'first:rounded-l-md last:rounded-r-md',
-                  view === v.value
-                    ? 'bg-primary text-primary-foreground'
-                    : 'hover:bg-primary/10 text-foreground'
-                )}
-              >
-                {v.label}
-              </button>
-            ))}
-          </div>
         </div>
 
-        {/* 우측(PC만): 뷰 전환 + 필터 */}
-        <div className="hidden xl:flex items-center gap-3">
-          <div className="flex rounded-md border">
-            {views.map((v) => (
-              <button
-                key={v.value}
-                onClick={() => onViewChange(v.value)}
-                className={cn(
-                  'px-4 py-1.5 text-sm font-medium transition-colors',
-                  'first:rounded-l-md last:rounded-r-md',
-                  view === v.value
-                    ? 'bg-primary text-primary-foreground'
-                    : 'hover:bg-primary/10 text-foreground'
-                )}
-              >
-                {v.label}
-              </button>
-            ))}
-          </div>
+        {/* 우측: 뷰 전환 + 필터 */}
+        <div className="flex items-center gap-3">
+          {renderViewTabs('px-4 py-1.5')}
           {filterSlot && <div className="flex items-center gap-2">{filterSlot}</div>}
         </div>
       </div>
 
-      {/* 3줄(모바일만): 필터 */}
+      {/* 모바일 전용: 필터 */}
       {filterSlot && (
         <div className="flex xl:hidden items-center gap-2">{filterSlot}</div>
       )}
     </div>
   );
-}
\ No newline at end of file
+}
diff --git a/src/components/organisms/MobileCard.tsx b/src/components/organisms/MobileCard.tsx
index 9e442f84..9fb6304c 100644
--- a/src/components/organisms/MobileCard.tsx
+++ b/src/components/organisms/MobileCard.tsx
@@ -301,7 +301,7 @@ export function MobileCard({
             )}
 
             {/* 제목 */}
-            <h3 className="font-semibold text-gray-900 dark:text-gray-100 whitespace-nowrap">
+            <h3 className="font-semibold text-gray-900 dark:text-gray-100 truncate">
               {title}
             </h3>
 
diff --git a/src/components/quotes/LocationDetailPanel.tsx b/src/components/quotes/LocationDetailPanel.tsx
index 9fa57d1f..36835710 100644
--- a/src/components/quotes/LocationDetailPanel.tsx
+++ b/src/components/quotes/LocationDetailPanel.tsx
@@ -34,6 +34,7 @@ import {
 } from "../ui/table";
 import { Tabs, TabsContent, TabsList, TabsTrigger } from "../ui/tabs";
 import { ItemSearchModal } from "./ItemSearchModal";
+import { LocationEditModal } from "./LocationEditModal";
 
 import type { LocationItem } from "./QuoteRegistrationV2";
 import type { FinishedGoods } from "./actions";
@@ -117,6 +118,7 @@ export function LocationDetailPanel({
 
   const [activeTab, setActiveTab] = useState("body");
   const [itemSearchOpen, setItemSearchOpen] = useState(false);
+  const [editModalOpen, setEditModalOpen] = useState(false);
 
   // ---------------------------------------------------------------------------
   // 계산된 값
@@ -257,7 +259,14 @@ export function LocationDetailPanel({
               className="w-24 h-8 text-center font-bold"
             />
             {!disabled && (
-              <Badge variant="secondary" className="text-xs">수정</Badge>
+              <Button
+                variant="secondary"
+                size="sm"
+                className="text-xs h-7"
+                onClick={() => setEditModalOpen(true)}
+              >
+                수정
+              </Button>
             )}
           </div>
         </div>
@@ -613,6 +622,16 @@ export function LocationDetailPanel({
         }}
         tabLabel={DETAIL_TABS.find((t) => t.value === activeTab)?.label}
       />
+
+      {/* 개소 정보 수정 모달 */}
+      <LocationEditModal
+        open={editModalOpen}
+        onOpenChange={setEditModalOpen}
+        location={location}
+        onSave={(locationId, updates) => {
+          onUpdateLocation(locationId, updates);
+        }}
+      />
     </div>
   );
 }
\ No newline at end of file
diff --git a/src/components/quotes/LocationEditModal.tsx b/src/components/quotes/LocationEditModal.tsx
new file mode 100644
index 00000000..2832fdc2
--- /dev/null
+++ b/src/components/quotes/LocationEditModal.tsx
@@ -0,0 +1,282 @@
+/**
+ * 개소 정보 수정 모달
+ *
+ * 발주 개소 목록에서 수정 버튼 클릭 시 표시
+ * - 개소 정보: 층, 부호
+ * - 오픈사이즈: 가로, 세로
+ * - 필수 설정: 가이드레일, 전원, 제어기
+ */
+
+"use client";
+
+import { useState, useEffect } from "react";
+import {
+  Dialog,
+  DialogContent,
+  DialogHeader,
+  DialogTitle,
+} from "../ui/dialog";
+import { Button } from "../ui/button";
+import { Input } from "../ui/input";
+import { NumberInput } from "../ui/number-input";
+import {
+  Select,
+  SelectContent,
+  SelectItem,
+  SelectTrigger,
+  SelectValue,
+} from "../ui/select";
+
+import type { LocationItem } from "./QuoteRegistrationV2";
+
+// =============================================================================
+// 상수
+// =============================================================================
+
+// 가이드레일 설치 유형
+const GUIDE_RAIL_TYPES = [
+  { value: "wall", label: "벽면형" },
+  { value: "floor", label: "측면형" },
+];
+
+// 모터 전원
+const MOTOR_POWERS = [
+  { value: "single", label: "단상(220V)" },
+  { value: "three", label: "삼상(380V)" },
+];
+
+// 연동제어기
+const CONTROLLERS = [
+  { value: "basic", label: "단독" },
+  { value: "smart", label: "연동" },
+  { value: "premium", label: "매립형-뒷박스포함" },
+];
+
+// =============================================================================
+// Props
+// =============================================================================
+
+interface LocationEditModalProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+  location: LocationItem | null;
+  onSave: (locationId: string, updates: Partial<LocationItem>) => void;
+}
+
+// =============================================================================
+// 컴포넌트
+// =============================================================================
+
+export function LocationEditModal({
+  open,
+  onOpenChange,
+  location,
+  onSave,
+}: LocationEditModalProps) {
+  // ---------------------------------------------------------------------------
+  // 상태
+  // ---------------------------------------------------------------------------
+  const [formData, setFormData] = useState({
+    floor: "",
+    code: "",
+    openWidth: 0,
+    openHeight: 0,
+    guideRailType: "wall",
+    motorPower: "single",
+    controller: "basic",
+  });
+
+  // location 변경 시 폼 데이터 초기화
+  useEffect(() => {
+    if (location) {
+      setFormData({
+        floor: location.floor,
+        code: location.code,
+        openWidth: location.openWidth,
+        openHeight: location.openHeight,
+        guideRailType: location.guideRailType,
+        motorPower: location.motorPower,
+        controller: location.controller,
+      });
+    }
+  }, [location]);
+
+  // ---------------------------------------------------------------------------
+  // 핸들러
+  // ---------------------------------------------------------------------------
+
+  const handleFieldChange = (field: string, value: string | number) => {
+    setFormData((prev) => ({ ...prev, [field]: value }));
+  };
+
+  const handleSave = () => {
+    if (!location) return;
+
+    onSave(location.id, {
+      floor: formData.floor,
+      code: formData.code,
+      openWidth: formData.openWidth,
+      openHeight: formData.openHeight,
+      guideRailType: formData.guideRailType,
+      motorPower: formData.motorPower,
+      controller: formData.controller,
+    });
+
+    onOpenChange(false);
+  };
+
+  const handleCancel = () => {
+    onOpenChange(false);
+  };
+
+  // ---------------------------------------------------------------------------
+  // 렌더링
+  // ---------------------------------------------------------------------------
+
+  if (!location) return null;
+
+  return (
+    <Dialog open={open} onOpenChange={onOpenChange}>
+      <DialogContent className="sm:max-w-[500px]">
+        <DialogHeader>
+          <DialogTitle>개소 정보 수정</DialogTitle>
+        </DialogHeader>
+
+        <div className="space-y-6 py-4">
+          {/* 개소 정보 */}
+          <div className="space-y-3">
+            <h4 className="text-sm font-semibold text-gray-700">개소 정보</h4>
+            <div className="grid grid-cols-2 gap-4">
+              <div>
+                <label className="text-sm text-gray-600 mb-1 block">층</label>
+                <Input
+                  value={formData.floor}
+                  onChange={(e) => handleFieldChange("floor", e.target.value)}
+                  placeholder="1층"
+                />
+              </div>
+              <div>
+                <label className="text-sm text-gray-600 mb-1 block">부호</label>
+                <Input
+                  value={formData.code}
+                  onChange={(e) => handleFieldChange("code", e.target.value)}
+                  placeholder="FSS-01"
+                />
+              </div>
+            </div>
+          </div>
+
+          {/* 오픈사이즈 */}
+          <div className="space-y-3">
+            <h4 className="text-sm font-semibold text-gray-700">오픈사이즈</h4>
+            <div className="grid grid-cols-2 gap-4">
+              <div>
+                <label className="text-sm text-gray-600 mb-1 block">가로 (mm)</label>
+                <NumberInput
+                  value={formData.openWidth}
+                  onChange={(value) => handleFieldChange("openWidth", value ?? 0)}
+                  placeholder="5000"
+                />
+              </div>
+              <div>
+                <label className="text-sm text-gray-600 mb-1 block">세로 (mm)</label>
+                <NumberInput
+                  value={formData.openHeight}
+                  onChange={(value) => handleFieldChange("openHeight", value ?? 0)}
+                  placeholder="3000"
+                />
+              </div>
+            </div>
+            <p className="text-xs text-gray-500">
+              ※ 제작사이즈는 오픈사이즈의 280mm를 더한 값으로 자동 계산됩니다.
+            </p>
+          </div>
+
+          {/* 필수 설정 */}
+          <div className="space-y-3">
+            <h4 className="text-sm font-semibold text-gray-700">필수 설정</h4>
+            <div className="grid grid-cols-3 gap-3">
+              <div>
+                <label className="text-xs text-gray-500 flex items-center gap-1 mb-1">
+                  🔧 가이드레일
+                </label>
+                <Select
+                  value={formData.guideRailType}
+                  onValueChange={(value) => handleFieldChange("guideRailType", value)}
+                >
+                  <SelectTrigger>
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {GUIDE_RAIL_TYPES.map((type) => (
+                      <SelectItem key={type.value} value={type.value}>
+                        {type.label}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              </div>
+              <div>
+                <label className="text-xs text-gray-500 flex items-center gap-1 mb-1">
+                  ⚡ 전원
+                </label>
+                <Select
+                  value={formData.motorPower}
+                  onValueChange={(value) => handleFieldChange("motorPower", value)}
+                >
+                  <SelectTrigger>
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {MOTOR_POWERS.map((power) => (
+                      <SelectItem key={power.value} value={power.value}>
+                        {power.label}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              </div>
+              <div>
+                <label className="text-xs text-gray-500 flex items-center gap-1 mb-1">
+                  📦 제어기
+                </label>
+                <Select
+                  value={formData.controller}
+                  onValueChange={(value) => handleFieldChange("controller", value)}
+                >
+                  <SelectTrigger>
+                    <SelectValue />
+                  </SelectTrigger>
+                  <SelectContent>
+                    {CONTROLLERS.map((ctrl) => (
+                      <SelectItem key={ctrl.value} value={ctrl.value}>
+                        {ctrl.label}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+              </div>
+            </div>
+          </div>
+        </div>
+
+        {/* 버튼 */}
+        <div className="flex gap-3 pt-4 border-t">
+          <Button
+            variant="outline"
+            onClick={handleCancel}
+            className="flex-1"
+          >
+            취소
+          </Button>
+          <Button
+            onClick={handleSave}
+            className="flex-1 bg-orange-500 hover:bg-orange-600"
+          >
+            저장
+          </Button>
+        </div>
+      </DialogContent>
+    </Dialog>
+  );
+}
diff --git a/src/components/quotes/LocationListPanel.tsx b/src/components/quotes/LocationListPanel.tsx
index c76b6f7d..79bee6a0 100644
--- a/src/components/quotes/LocationListPanel.tsx
+++ b/src/components/quotes/LocationListPanel.tsx
@@ -9,7 +9,7 @@
 "use client";
 
 import { useState, useCallback } from "react";
-import { Plus, Upload, Download, Trash2 } from "lucide-react";
+import { Plus, Upload, Download, Trash2, Pencil } from "lucide-react";
 import { toast } from "sonner";
 
 import { Button } from "../ui/button";
@@ -32,6 +32,7 @@ import {
   TableRow,
 } from "../ui/table";
 import { DeleteConfirmDialog } from "../ui/confirm-dialog";
+import { LocationEditModal } from "./LocationEditModal";
 
 import type { LocationItem } from "./QuoteRegistrationV2";
 import type { FinishedGoods } from "./actions";
@@ -70,6 +71,7 @@ interface LocationListPanelProps {
   onSelectLocation: (id: string) => void;
   onAddLocation: (location: Omit<LocationItem, "id">) => void;
   onDeleteLocation: (id: string) => void;
+  onUpdateLocation: (locationId: string, updates: Partial<LocationItem>) => void;
   onExcelUpload: (locations: Omit<LocationItem, "id">[]) => void;
   finishedGoods: FinishedGoods[];
   disabled?: boolean;
@@ -85,6 +87,7 @@ export function LocationListPanel({
   onSelectLocation,
   onAddLocation,
   onDeleteLocation,
+  onUpdateLocation,
   onExcelUpload,
   finishedGoods,
   disabled = false,
@@ -109,6 +112,9 @@ export function LocationListPanel({
   // 삭제 확인 다이얼로그
   const [deleteTarget, setDeleteTarget] = useState<string | null>(null);
 
+  // 수정 모달
+  const [editTarget, setEditTarget] = useState<LocationItem | null>(null);
+
   // ---------------------------------------------------------------------------
   // 핸들러
   // ---------------------------------------------------------------------------
@@ -346,17 +352,30 @@ export function LocationListPanel({
                   <TableCell className="text-center">{loc.quantity}</TableCell>
                   <TableCell className="text-center">
                     {!disabled && (
-                      <Button
-                        variant="ghost"
-                        size="icon"
-                        className="h-6 w-6 text-red-500 hover:text-red-600"
-                        onClick={(e) => {
-                          e.stopPropagation();
-                          setDeleteTarget(loc.id);
-                        }}
-                      >
-                        <Trash2 className="h-3 w-3" />
-                      </Button>
+                      <div className="flex items-center justify-center gap-1">
+                        <Button
+                          variant="ghost"
+                          size="icon"
+                          className="h-6 w-6 text-gray-500 hover:text-blue-600"
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            setEditTarget(loc);
+                          }}
+                        >
+                          <Pencil className="h-3 w-3" />
+                        </Button>
+                        <Button
+                          variant="ghost"
+                          size="icon"
+                          className="h-6 w-6 text-red-500 hover:text-red-600"
+                          onClick={(e) => {
+                            e.stopPropagation();
+                            setDeleteTarget(loc.id);
+                          }}
+                        >
+                          <Trash2 className="h-3 w-3" />
+                        </Button>
+                      </div>
                     )}
                   </TableCell>
                 </TableRow>
@@ -521,6 +540,18 @@ export function LocationListPanel({
         title="개소 삭제"
         description="선택한 개소를 삭제하시겠습니까? 이 작업은 되돌릴 수 없습니다."
       />
+
+      {/* 개소 정보 수정 모달 */}
+      <LocationEditModal
+        open={!!editTarget}
+        onOpenChange={(open) => !open && setEditTarget(null)}
+        location={editTarget}
+        onSave={(locationId, updates) => {
+          onUpdateLocation(locationId, updates);
+          setEditTarget(null);
+          toast.success("개소 정보가 수정되었습니다.");
+        }}
+      />
     </div>
   );
 }
\ No newline at end of file
diff --git a/src/components/quotes/QuoteRegistrationV2.tsx b/src/components/quotes/QuoteRegistrationV2.tsx
index 0fe54277..0d05c134 100644
--- a/src/components/quotes/QuoteRegistrationV2.tsx
+++ b/src/components/quotes/QuoteRegistrationV2.tsx
@@ -703,6 +703,7 @@ export function QuoteRegistrationV2({
                 onSelectLocation={setSelectedLocationId}
                 onAddLocation={handleAddLocation}
                 onDeleteLocation={handleDeleteLocation}
+                onUpdateLocation={handleUpdateLocation}
                 onExcelUpload={handleExcelUpload}
                 finishedGoods={finishedGoods}
                 disabled={isViewMode}
diff --git a/src/components/templates/IntegratedDetailTemplate/components/DetailActions.tsx b/src/components/templates/IntegratedDetailTemplate/components/DetailActions.tsx
index 1777136d..bb3168f4 100644
--- a/src/components/templates/IntegratedDetailTemplate/components/DetailActions.tsx
+++ b/src/components/templates/IntegratedDetailTemplate/components/DetailActions.tsx
@@ -103,33 +103,35 @@ export function DetailActions({
   const actualSubmitLabel = submitLabel || (isCreateMode ? '등록' : '저장');
 
   // Fixed 스타일: 화면 하단에 고정 (사이드바 상태에 따라 동적 계산)
-  // 사이드바 펼침: w-64(256px), 접힘: w-24(96px), 차이: 160px
+  // 모바일: 좌우 여백 16px (left-4 right-4)
+  // 태블릿/데스크탑: 사이드바 펼침(w-64=256px), 접힘(w-24=96px) + 여백 고려
   const stickyStyles = sticky
-    ? `fixed bottom-6 ${sidebarCollapsed ? 'left-[156px]' : 'left-[316px]'} right-[48px] px-6 py-3 bg-background/95 backdrop-blur rounded-xl border shadow-lg z-50 transition-all duration-300`
+    ? `fixed bottom-4 left-4 right-4 px-4 py-3 bg-background/95 backdrop-blur rounded-xl border shadow-lg z-50 transition-all duration-300 md:bottom-6 md:px-6 md:right-[48px] ${sidebarCollapsed ? 'md:left-[156px]' : 'md:left-[316px]'}`
     : '';
 
   // 공통 레이아웃: 왼쪽(뒤로) | 오른쪽(액션들)
+  // 모바일: 아이콘만, 태블릿 이상: 아이콘 + 텍스트
   return (
-    <div className={cn('flex items-center justify-between', stickyStyles, className)}>
+    <div className={cn('flex items-center justify-between gap-2', stickyStyles, className)}>
       {/* 왼쪽: 목록으로 (view) 또는 취소 (edit/create) */}
       {isViewMode ? (
         showBack && onBack ? (
-          <Button variant="outline" onClick={onBack}>
-            <ArrowLeft className="w-4 h-4 mr-2" />
-            {backLabel}
+          <Button variant="outline" onClick={onBack} size="sm" className="md:size-default">
+            <ArrowLeft className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">{backLabel}</span>
           </Button>
         ) : (
           <div />
         )
       ) : (
-        <Button variant="outline" onClick={onCancel} disabled={isSubmitting}>
-          <X className="w-4 h-4 mr-2" />
-          {cancelLabel}
+        <Button variant="outline" onClick={onCancel} disabled={isSubmitting} size="sm" className="md:size-default">
+          <X className="w-4 h-4 md:mr-2" />
+          <span className="hidden md:inline">{cancelLabel}</span>
         </Button>
       )}
 
       {/* 오른쪽: 추가액션 + 삭제 + 수정/저장/등록 */}
-      <div className="flex items-center gap-2">
+      <div className="flex items-center gap-1 md:gap-2">
         {extraActions}
 
         {/* 삭제 버튼: view, edit 모드에서 표시 (create는 삭제할 대상 없음) */}
@@ -138,26 +140,27 @@ export function DetailActions({
             variant="outline"
             onClick={onDelete}
             disabled={isSubmitting}
-            className="text-destructive hover:bg-destructive hover:text-destructive-foreground"
+            size="sm"
+            className="text-destructive hover:bg-destructive hover:text-destructive-foreground md:size-default"
           >
-            <Trash2 className="w-4 h-4 mr-2" />
-            {deleteLabel}
+            <Trash2 className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">{deleteLabel}</span>
           </Button>
         )}
 
         {/* 수정 버튼: view 모드에서만 */}
         {isViewMode && canEdit && showEdit && onEdit && (
-          <Button onClick={onEdit}>
-            <Edit className="w-4 h-4 mr-2" />
-            {editLabel}
+          <Button onClick={onEdit} size="sm" className="md:size-default">
+            <Edit className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">{editLabel}</span>
           </Button>
         )}
 
         {/* 저장/등록 버튼: edit, create 모드에서만 */}
         {!isViewMode && showSave && onSubmit && (
-          <Button onClick={onSubmit} disabled={isSubmitting}>
-            <Save className="w-4 h-4 mr-2" />
-            {actualSubmitLabel}
+          <Button onClick={onSubmit} disabled={isSubmitting} size="sm" className="md:size-default">
+            <Save className="w-4 h-4 md:mr-2" />
+            <span className="hidden md:inline">{actualSubmitLabel}</span>
           </Button>
         )}
       </div>