diff --git a/src/components/auth/SignupPage.tsx b/src/components/auth/SignupPage.tsx
index a7fc3465..17412831 100644
--- a/src/components/auth/SignupPage.tsx
+++ b/src/components/auth/SignupPage.tsx
@@ -25,6 +25,7 @@ import {
 } from "lucide-react";
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { isNextRedirectError } from '@/lib/utils/redirect-error';
+import { extractDigits } from '@/lib/formatters';
 
 export function SignupPage() {
   const router = useRouter();
@@ -64,7 +65,7 @@ export function SignupPage() {
   // 사업자등록번호 자동 포맷팅 (000-00-00000)
   const formatBusinessNumber = (value: string) => {
     // 숫자만 추출
-    const numbers = value.replace(/[^\d]/g, '');
+    const numbers = extractDigits(value);
 
     // 최대 10자리까지만
     const limited = numbers.slice(0, 10);
@@ -87,7 +88,7 @@ export function SignupPage() {
   // 핸드폰 번호 자동 포맷팅 (010-1111-1111 or 010-111-1111)
   const formatPhoneNumber = (value: string) => {
     // 숫자만 추출
-    const numbers = value.replace(/[^\d]/g, '');
+    const numbers = extractDigits(value);
 
     // 최대 11자리까지만
     const limited = numbers.slice(0, 11);
diff --git a/src/components/business/CEODashboard/dialogs/DashboardSettingsDialog.tsx b/src/components/business/CEODashboard/dialogs/DashboardSettingsDialog.tsx
index 85ddff71..96d0b139 100644
--- a/src/components/business/CEODashboard/dialogs/DashboardSettingsDialog.tsx
+++ b/src/components/business/CEODashboard/dialogs/DashboardSettingsDialog.tsx
@@ -889,7 +889,7 @@ export function DashboardSettingsDialog({
           ))}
         </div>
 
-        <DialogFooter className="flex gap-3 p-4 border-t border-gray-200 sm:justify-center">
+        <DialogFooter className="flex flex-row gap-3 p-4 border-t border-gray-200 justify-center">
           <Button
             variant="outline"
             onClick={handleCancel}
diff --git a/src/components/business/CEODashboard/modals/ScheduleDetailModal.tsx b/src/components/business/CEODashboard/modals/ScheduleDetailModal.tsx
index 048d462c..976d385c 100644
--- a/src/components/business/CEODashboard/modals/ScheduleDetailModal.tsx
+++ b/src/components/business/CEODashboard/modals/ScheduleDetailModal.tsx
@@ -126,35 +126,30 @@ export function ScheduleDetailModal({
 
   return (
     <Dialog open={isOpen} onOpenChange={(open) => !open && handleCancel()}>
-      <DialogContent className="w-[95vw] max-w-[480px] sm:max-w-[480px] p-6">
+      <DialogContent className="w-[95vw] max-w-[480px] sm:max-w-[480px] p-4 sm:p-6 max-h-[90vh] overflow-y-auto">
         <DialogHeader className="pb-2">
           <DialogTitle className="text-lg font-bold">일정 상세</DialogTitle>
         </DialogHeader>
 
-        <div className="space-y-6 py-4">
+        <div className="space-y-4 py-2">
           {/* 제목 */}
-          <div className="flex items-center gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0">
-              제목
-            </label>
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">제목</label>
             <Input
               value={formData.title}
               onChange={(e) => handleFieldChange('title', e.target.value)}
               placeholder="제목"
-              className="flex-1"
             />
           </div>
 
           {/* 대상 (부서) */}
-          <div className="flex items-center gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0">
-              대상
-            </label>
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">대상</label>
             <Select
               value={formData.department}
               onValueChange={(value) => handleFieldChange('department', value)}
             >
-              <SelectTrigger className="flex-1">
+              <SelectTrigger>
                 <SelectValue placeholder="부서명" />
               </SelectTrigger>
               <SelectContent>
@@ -168,33 +163,31 @@ export function ScheduleDetailModal({
           </div>
 
           {/* 기간 */}
-          <div className="flex items-center gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0">
-              기간
-            </label>
-            <div className="flex-1 flex items-center gap-2">
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">기간</label>
+            <div className="flex flex-col gap-2">
               <DatePicker
                 value={formData.startDate}
                 onChange={(value) => handleFieldChange('startDate', value)}
                 size="sm"
-                className="flex-1"
-              />
-              <span className="text-gray-400 px-1">~</span>
-              <DatePicker
-                value={formData.endDate}
-                onChange={(value) => handleFieldChange('endDate', value)}
-                size="sm"
-                className="flex-1"
+                className="w-full"
               />
+              <div className="flex items-center gap-2">
+                <span className="text-gray-400 text-xs">~</span>
+                <DatePicker
+                  value={formData.endDate}
+                  onChange={(value) => handleFieldChange('endDate', value)}
+                  size="sm"
+                  className="w-full"
+                />
+              </div>
             </div>
           </div>
 
           {/* 시간 */}
-          <div className="flex items-start gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0 pt-2">
-              시간
-            </label>
-            <div className="flex-1 space-y-3">
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">시간</label>
+            <div className="space-y-3">
               {/* 종일 체크박스 */}
               <div className="flex items-center gap-2">
                 <Checkbox
@@ -215,15 +208,15 @@ export function ScheduleDetailModal({
                     value={formData.startTime}
                     onChange={(value) => handleFieldChange('startTime', value)}
                     placeholder="시작 시간"
-                    className="flex-1"
+                    className="flex-1 min-w-0"
                     minuteStep={5}
                   />
-                  <span className="text-gray-400 px-1">~</span>
+                  <span className="text-gray-400 shrink-0">~</span>
                   <TimePicker
                     value={formData.endTime}
                     onChange={(value) => handleFieldChange('endTime', value)}
                     placeholder="종료 시간"
-                    className="flex-1"
+                    className="flex-1 min-w-0"
                     minuteStep={5}
                   />
                 </div>
@@ -232,11 +225,9 @@ export function ScheduleDetailModal({
           </div>
 
           {/* 색상 */}
-          <div className="flex items-center gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0">
-              색상
-            </label>
-            <div className="flex gap-3">
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">색상</label>
+            <div className="flex gap-3 flex-wrap">
               {COLOR_OPTIONS.map((color) => (
                 <button
                   key={color.value}
@@ -254,20 +245,18 @@ export function ScheduleDetailModal({
           </div>
 
           {/* 내용 */}
-          <div className="flex items-start gap-6">
-            <label className="w-10 text-sm font-medium text-gray-700 shrink-0 pt-2">
-              내용
-            </label>
+          <div className="space-y-1.5">
+            <label className="text-sm font-medium text-gray-700">내용</label>
             <Textarea
               value={formData.content}
               onChange={(e) => handleFieldChange('content', e.target.value)}
               placeholder="내용"
-              className="flex-1 min-h-[120px] resize-none"
+              className="min-h-[100px] resize-none"
             />
           </div>
         </div>
 
-        <DialogFooter className="flex gap-2 pt-2">
+        <DialogFooter className="flex flex-row gap-2 pt-2">
           {isEditMode && onDelete && (
             <Button
               variant="outline"
diff --git a/src/components/business/CEODashboard/sections/CalendarSection.tsx b/src/components/business/CEODashboard/sections/CalendarSection.tsx
index 7894f599..32e327f7 100644
--- a/src/components/business/CEODashboard/sections/CalendarSection.tsx
+++ b/src/components/business/CEODashboard/sections/CalendarSection.tsx
@@ -12,7 +12,7 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select';
-import { Plus, ExternalLink } from 'lucide-react';
+import { Plus, ExternalLink, ChevronLeft, ChevronRight } from 'lucide-react';
 import { ScheduleCalendar } from '@/components/common/ScheduleCalendar';
 import type { ScheduleEvent } from '@/components/common/ScheduleCalendar/types';
 import { getCalendarEventsForYear, type CalendarEvent } from '@/constants/calendarEvents';
@@ -243,50 +243,238 @@ export function CalendarSection({
     setCurrentDate(date);
   };
 
+  // 모바일 리스트뷰: 현재 월의 모든 날짜와 이벤트
+  const monthDaysWithEvents = useMemo(() => {
+    const year = currentDate.getFullYear();
+    const month = currentDate.getMonth();
+    const daysInMonth = new Date(year, month + 1, 0).getDate();
+    const dayNames = ['일', '월', '화', '수', '목', '금', '토'];
+    const today = new Date();
+    today.setHours(0, 0, 0, 0);
+
+    const days: Array<{
+      date: Date;
+      dateStr: string;
+      label: string;
+      isToday: boolean;
+      isWeekend: boolean;
+      events: ScheduleEvent[];
+    }> = [];
+
+    for (let d = 1; d <= daysInMonth; d++) {
+      const date = new Date(year, month, d);
+      const mm = String(month + 1).padStart(2, '0');
+      const dd = String(d).padStart(2, '0');
+      const dateStr = `${year}-${mm}-${dd}`;
+      const dayOfWeek = date.getDay();
+
+      const dayEvents = calendarEvents.filter(
+        (ev) => ev.startDate <= dateStr && ev.endDate >= dateStr
+      );
+
+      days.push({
+        date,
+        dateStr,
+        label: `${d}일 ${dayNames[dayOfWeek]}요일`,
+        isToday: date.getTime() === today.getTime(),
+        isWeekend: dayOfWeek === 0 || dayOfWeek === 6,
+        events: dayEvents,
+      });
+    }
+    return days;
+  }, [currentDate, calendarEvents]);
+
+  const handleMobilePrevMonth = () => {
+    const prev = new Date(currentDate.getFullYear(), currentDate.getMonth() - 1, 1);
+    setCurrentDate(prev);
+  };
+
+  const handleMobileNextMonth = () => {
+    const next = new Date(currentDate.getFullYear(), currentDate.getMonth() + 1, 1);
+    setCurrentDate(next);
+  };
+
   return (
     <Card>
       <CardContent className="p-6">
-        {/* 섹션 헤더: 타이틀 + 필터들 */}
-        <div className="flex items-center justify-between mb-4">
-          <h3 className="text-lg font-semibold">캘린더</h3>
-          <div className="flex items-center gap-2">
-          {/* 부서 필터 */}
-          <Select
-            value={deptFilter}
-            onValueChange={(value) => setDeptFilter(value as CalendarDeptFilterType)}
-          >
-            <SelectTrigger className="min-w-[80px] w-auto h-8">
-              <SelectValue />
-            </SelectTrigger>
-            <SelectContent>
-              {DEPT_FILTER_OPTIONS.map((option) => (
-                <SelectItem key={option.value} value={option.value}>
-                  {option.label}
-                </SelectItem>
-              ))}
-            </SelectContent>
-          </Select>
+        {/* 모바일: 스티키 헤더 (타이틀+필터+월네비) */}
+        <div className="lg:hidden sticky top-12 z-10 bg-white -mx-6 px-6 pt-2 pb-3 border-b border-gray-100">
+          <div className="flex items-center justify-between mb-3 flex-wrap gap-2">
+            <h3 className="text-lg font-semibold shrink-0">캘린더</h3>
+            <div className="flex items-center gap-2">
+              {/* 부서 필터 */}
+              <Select
+                value={deptFilter}
+                onValueChange={(value) => setDeptFilter(value as CalendarDeptFilterType)}
+              >
+                <SelectTrigger className="min-w-[80px] w-auto h-8">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  {DEPT_FILTER_OPTIONS.map((option) => (
+                    <SelectItem key={option.value} value={option.value}>
+                      {option.label}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
 
-          {/* 업무 필터 */}
-          <Select
-            value={taskFilter}
-            onValueChange={(value) => setTaskFilter(value as CalendarTaskFilterType)}
-          >
-            <SelectTrigger className="min-w-[80px] w-auto h-8">
-              <SelectValue />
-            </SelectTrigger>
-            <SelectContent>
-              {TASK_FILTER_OPTIONS.map((option) => (
-                <SelectItem key={option.value} value={option.value}>
-                  {option.label}
-                </SelectItem>
-              ))}
-            </SelectContent>
-          </Select>
+              {/* 업무 필터 */}
+              <Select
+                value={taskFilter}
+                onValueChange={(value) => setTaskFilter(value as CalendarTaskFilterType)}
+              >
+                <SelectTrigger className="min-w-[80px] w-auto h-8">
+                  <SelectValue />
+                </SelectTrigger>
+                <SelectContent>
+                  {TASK_FILTER_OPTIONS.map((option) => (
+                    <SelectItem key={option.value} value={option.value}>
+                      {option.label}
+                    </SelectItem>
+                  ))}
+                </SelectContent>
+              </Select>
+            </div>
+          </div>
+
+          {/* 월 네비게이션 */}
+          <div className="flex items-center justify-center gap-4">
+            <Button variant="outline" size="sm" className="h-8 px-2" onClick={handleMobilePrevMonth}>
+              <ChevronLeft className="h-4 w-4" />
+            </Button>
+            <span className="text-sm font-semibold whitespace-nowrap">
+              {currentDate.getFullYear()}년 {currentDate.getMonth() + 1}월
+            </span>
+            <Button variant="outline" size="sm" className="h-8 px-2" onClick={handleMobileNextMonth}>
+              <ChevronRight className="h-4 w-4" />
+            </Button>
           </div>
         </div>
 
-        <div className="grid grid-cols-1 lg:grid-cols-2 gap-6">
+        {/* 데스크탑: 일반 헤더 */}
+        <div className="hidden lg:flex items-center justify-between mb-4 flex-wrap gap-2">
+          <h3 className="text-lg font-semibold shrink-0">캘린더</h3>
+          <div className="flex items-center gap-2">
+            <Select
+              value={deptFilter}
+              onValueChange={(value) => setDeptFilter(value as CalendarDeptFilterType)}
+            >
+              <SelectTrigger className="min-w-[80px] w-auto h-8">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {DEPT_FILTER_OPTIONS.map((option) => (
+                  <SelectItem key={option.value} value={option.value}>
+                    {option.label}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+
+            <Select
+              value={taskFilter}
+              onValueChange={(value) => setTaskFilter(value as CalendarTaskFilterType)}
+            >
+              <SelectTrigger className="min-w-[80px] w-auto h-8">
+                <SelectValue />
+              </SelectTrigger>
+              <SelectContent>
+                {TASK_FILTER_OPTIONS.map((option) => (
+                  <SelectItem key={option.value} value={option.value}>
+                    {option.label}
+                  </SelectItem>
+                ))}
+              </SelectContent>
+            </Select>
+          </div>
+        </div>
+
+        {/* 모바일: 리스트뷰 */}
+        <div className="lg:hidden pt-3">
+
+          {/* 일별 리스트 */}
+          <div className="space-y-1">
+            {monthDaysWithEvents.map((day) => {
+              const hasEvents = day.events.length > 0;
+              const isSelected = selectedDate && day.date.getTime() === selectedDate.getTime();
+              return (
+                <div
+                  key={day.dateStr}
+                  className={`rounded-lg px-3 py-2.5 cursor-pointer transition-colors ${
+                    isSelected ? 'bg-blue-50 ring-1 ring-blue-200' :
+                    day.isToday ? 'bg-amber-50' : ''
+                  } ${!hasEvents && !day.isToday && !isSelected ? 'opacity-50' : ''}`}
+                  onClick={() => handleDateClick(day.date)}
+                >
+                  {/* 날짜 + 일정등록 버튼 */}
+                  <div className="flex items-center justify-between mb-1">
+                    <div className={`text-sm font-medium ${
+                      day.isWeekend ? 'text-red-500' : 'text-gray-900'
+                    } ${day.isToday ? 'font-bold' : ''}`}>
+                      {day.label}
+                      {day.isToday && <span className="ml-1 text-amber-600 text-xs font-semibold">(오늘)</span>}
+                    </div>
+                    {isSelected && (
+                      <Button
+                        variant="outline"
+                        size="sm"
+                        className="h-6 text-xs gap-0.5 px-2"
+                        onClick={(e) => {
+                          e.stopPropagation();
+                          onScheduleEdit?.({
+                            id: '',
+                            title: '',
+                            startDate: day.dateStr,
+                            endDate: day.dateStr,
+                            type: 'schedule',
+                          });
+                        }}
+                      >
+                        <Plus className="h-3 w-3" />
+                        일정등록
+                      </Button>
+                    )}
+                  </div>
+
+                  {/* 이벤트 목록 (날짜 아래) */}
+                  {hasEvents ? (
+                    <div className="space-y-1 pl-1">
+                      {day.events.slice(0, 3).map((ev) => {
+                        const evData = ev.data as Record<string, unknown>;
+                        const evType = evData?._type as string;
+                        const colorMap: Record<string, string> = {
+                          holiday: 'bg-red-500',
+                          tax: 'bg-orange-500',
+                          schedule: 'bg-blue-500',
+                          order: 'bg-green-500',
+                          construction: 'bg-purple-500',
+                          issue: 'bg-red-400',
+                        };
+                        const dotColor = colorMap[evType] || 'bg-gray-400';
+                        const title = evData?.name as string || evData?.title as string || ev.title;
+                        const cleanTitle = title?.replace(/^[🔴🟠]\s*/, '') || '';
+                        return (
+                          <div key={ev.id} className="flex items-center gap-1.5 text-xs text-gray-700">
+                            <span className={`w-2 h-2 rounded-full shrink-0 ${dotColor}`} />
+                            <span className="truncate">{cleanTitle}</span>
+                          </div>
+                        );
+                      })}
+                      {day.events.length > 3 && (
+                        <div className="text-xs text-gray-400 pl-3.5">+{day.events.length - 3}건</div>
+                      )}
+                    </div>
+                  ) : null}
+
+                </div>
+              );
+            })}
+          </div>
+        </div>
+
+        {/* 데스크탑: 기존 캘린더 + 상세 */}
+        <div className="hidden lg:grid lg:grid-cols-2 gap-6">
           {/* 캘린더 영역 */}
           <div>
             <ScheduleCalendar
@@ -297,25 +485,22 @@ export function CalendarSection({
               onEventClick={handleEventClick}
               onMonthChange={handleMonthChange}
               maxEventsPerDay={4}
-              weekStartsOn={1} // 월요일 시작 (기획서)
+              weekStartsOn={1}
               className="[&_.weekend]:bg-yellow-50"
             />
           </div>
 
           {/* 선택된 날짜 일정 + 이슈 목록 */}
           <div className="border rounded-lg p-4">
-            {/* 헤더: 날짜 + 일정등록 버튼 */}
             <div className="flex items-center justify-between mb-2">
               <h4 className="text-lg font-semibold">
                 {selectedDate ? formatSelectedDate(selectedDate) : '날짜를 선택하세요'}
               </h4>
-              {/* 일정등록 버튼 */}
               <Button
                 variant="outline"
                 size="sm"
                 className="h-7 text-xs gap-1"
                 onClick={() => {
-                  // 선택된 날짜 기준으로 새 일정 등록
                   const year = selectedDate?.getFullYear() || new Date().getFullYear();
                   const month = String((selectedDate?.getMonth() || new Date().getMonth()) + 1).padStart(2, '0');
                   const day = String(selectedDate?.getDate() || new Date().getDate()).padStart(2, '0');
@@ -334,7 +519,6 @@ export function CalendarSection({
               </Button>
             </div>
 
-            {/* 총 N건 */}
             <div className="text-sm text-muted-foreground mb-4">
               총 {totalItemCount}건
             </div>
@@ -345,7 +529,6 @@ export function CalendarSection({
               </div>
             ) : (
               <div className="space-y-3 max-h-[calc(100vh-400px)] overflow-y-auto pr-1">
-                {/* 공휴일/세금일정 목록 */}
                 {selectedDateItems.staticEvents.map((event) => {
                   const eventData = event.data as CalendarEvent & { _type: string };
                   const isHoliday = eventData.type === 'holiday';
@@ -369,36 +552,25 @@ export function CalendarSection({
                   );
                 })}
 
-                {/* 일정 목록 */}
                 {selectedDateItems.schedules.map((schedule) => (
                   <div
                     key={schedule.id}
                     className="p-3 border rounded-lg hover:bg-gray-50 transition-colors cursor-pointer"
                     onClick={() => onScheduleClick?.(schedule)}
                   >
-                    {/* 제목 */}
-                    <div className="font-medium text-base mb-1">
-                      {schedule.title}
-                    </div>
-                    {/* 부서명 | 날짜 | 시간 */}
-                    <div className="text-sm text-muted-foreground">
-                      {formatScheduleDetail(schedule)}
-                    </div>
+                    <div className="font-medium text-base mb-1">{schedule.title}</div>
+                    <div className="text-sm text-muted-foreground">{formatScheduleDetail(schedule)}</div>
                   </div>
                 ))}
 
-                {/* 이슈 목록 */}
                 {selectedDateItems.issues.map((issue) => (
                   <div
                     key={issue.id}
                     className="p-3 border border-red-200 rounded-lg hover:bg-red-50 transition-colors cursor-pointer"
                     onClick={() => {
-                      if (issue.path) {
-                        router.push(`/ko${issue.path}`);
-                      }
+                      if (issue.path) router.push(`/ko${issue.path}`);
                     }}
                   >
-                    {/* 뱃지 + 제목 */}
                     <div className="flex items-start gap-2 mb-1">
                       <Badge
                         variant="secondary"
@@ -406,11 +578,8 @@ export function CalendarSection({
                       >
                         {issue.badge}
                       </Badge>
-                      <span className="font-medium text-sm flex-1">
-                        {issue.content}
-                      </span>
+                      <span className="font-medium text-sm flex-1">{issue.content}</span>
                     </div>
-                    {/* 시간 + 상세보기 */}
                     <div className="flex items-center justify-between text-xs text-muted-foreground">
                       <span>{issue.time}</span>
                       {issue.path && (
diff --git a/src/components/business/CEODashboard/sections/DailyAttendanceSection.tsx b/src/components/business/CEODashboard/sections/DailyAttendanceSection.tsx
index 95aa0d66..1dc86a96 100644
--- a/src/components/business/CEODashboard/sections/DailyAttendanceSection.tsx
+++ b/src/components/business/CEODashboard/sections/DailyAttendanceSection.tsx
@@ -120,7 +120,7 @@ export function DailyAttendanceSection({ data }: DailyAttendanceSectionProps) {
             </Select>
           </div>
           <div className="overflow-x-auto">
-            <table className="w-full text-sm">
+            <table className="w-full text-sm min-w-[400px]">
               <thead>
                 <tr className="bg-gray-50 border-b">
                   <th className="px-4 py-2 text-center text-gray-600 font-medium w-12">No</th>
diff --git a/src/components/business/CEODashboard/sections/DebtCollectionSection.tsx b/src/components/business/CEODashboard/sections/DebtCollectionSection.tsx
index 2635aaa0..32952560 100644
--- a/src/components/business/CEODashboard/sections/DebtCollectionSection.tsx
+++ b/src/components/business/CEODashboard/sections/DebtCollectionSection.tsx
@@ -33,7 +33,7 @@ export function DebtCollectionSection({ data }: DebtCollectionSectionProps) {
           colorTheme="red"
         />
 
-        <div className="grid grid-cols-2 md:grid-cols-4 gap-4 mb-4">
+        <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-4 gap-4 mb-4">
           {data.cards.map((card, idx) => (
             <AmountCardItem
               key={card.id}
diff --git a/src/components/business/CEODashboard/sections/EnhancedSections.tsx b/src/components/business/CEODashboard/sections/EnhancedSections.tsx
index 60197bb2..28882ae5 100644
--- a/src/components/business/CEODashboard/sections/EnhancedSections.tsx
+++ b/src/components/business/CEODashboard/sections/EnhancedSections.tsx
@@ -94,7 +94,7 @@ export function EnhancedDailyReportSection({ data, onClick }: EnhancedDailyRepor
 
       {/* 카드 내용 */}
       <div style={{ backgroundColor: '#ffffff' }} className="p-6">
-        <div className="grid grid-cols-1 xs:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
+        <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
           {data.cards.map((card, idx) => {
             const style = CARD_STYLES[idx] || CARD_STYLES[0];
             const CardIcon = style.Icon;
@@ -240,7 +240,7 @@ export function EnhancedStatusBoardSection({ items, itemSettings }: EnhancedStat
         </div>
 
         {/* 카드 그리드 */}
-        <div className="grid grid-cols-2 md:grid-cols-3 lg:grid-cols-5 gap-3">
+        <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-3 lg:grid-cols-5 gap-3">
           {filteredItems.map((item) => {
             const isHighlighted = item.isHighlighted;
             const style = ITEM_STYLES[item.label] || DEFAULT_STYLE;
@@ -325,7 +325,7 @@ export function EnhancedMonthlyExpenseSection({ data, onCardClick }: EnhancedMon
         </div>
 
         {/* 카드 그리드 */}
-        <div className="grid grid-cols-1 xs:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
+        <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-4 mb-6">
           {/* 카드 1: 매입 */}
           <div
             style={{ backgroundColor: '#f5f3ff', borderColor: '#ddd6fe' }}
diff --git a/src/components/business/CEODashboard/sections/PurchaseStatusSection.tsx b/src/components/business/CEODashboard/sections/PurchaseStatusSection.tsx
index 971e6269..49b812f8 100644
--- a/src/components/business/CEODashboard/sections/PurchaseStatusSection.tsx
+++ b/src/components/business/CEODashboard/sections/PurchaseStatusSection.tsx
@@ -229,7 +229,7 @@ export function PurchaseStatusSection({ data }: PurchaseStatusSectionProps) {
           </div>
         </div>
         <div className="overflow-x-auto">
-          <table className="w-full text-sm">
+          <table className="w-full text-sm min-w-[500px]">
             <thead>
               <tr className="bg-gray-50 border-b">
                 <th className="px-4 py-2 text-left text-gray-600 font-medium">날짜</th>
diff --git a/src/components/business/CEODashboard/sections/SalesStatusSection.tsx b/src/components/business/CEODashboard/sections/SalesStatusSection.tsx
index 46260e7b..b0af22a1 100644
--- a/src/components/business/CEODashboard/sections/SalesStatusSection.tsx
+++ b/src/components/business/CEODashboard/sections/SalesStatusSection.tsx
@@ -234,7 +234,7 @@ export function SalesStatusSection({ data }: SalesStatusSectionProps) {
           </div>
         </div>
         <div className="overflow-x-auto">
-          <table className="w-full text-sm">
+          <table className="w-full text-sm min-w-[500px]">
             <thead>
               <tr className="bg-gray-50 border-b">
                 <th className="px-4 py-2 text-left text-gray-600 font-medium">날짜</th>
diff --git a/src/components/business/CEODashboard/sections/StatusBoardSection.tsx b/src/components/business/CEODashboard/sections/StatusBoardSection.tsx
index 29261702..3f90e560 100644
--- a/src/components/business/CEODashboard/sections/StatusBoardSection.tsx
+++ b/src/components/business/CEODashboard/sections/StatusBoardSection.tsx
@@ -39,22 +39,12 @@ export function StatusBoardSection({ items, itemSettings }: StatusBoardSectionPr
       })
     : items;
 
-  // 아이템 개수에 따른 동적 그리드 클래스 (xs: 344px Galaxy Fold 지원)
-  const getGridColsClass = () => {
-    const count = filteredItems.length;
-    if (count <= 1) return 'grid-cols-1';
-    if (count === 2) return 'grid-cols-1 xs:grid-cols-2';
-    if (count === 3) return 'grid-cols-1 xs:grid-cols-2 md:grid-cols-3';
-    // 4개 이상: 최대 4열, 넘치면 아래로
-    return 'grid-cols-1 xs:grid-cols-2 md:grid-cols-4';
-  };
-
   return (
     <Card>
       <CardContent className="p-6">
         <SectionTitle title="현황판" badge="warning" />
 
-        <div className={`grid ${getGridColsClass()} gap-3`}>
+        <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-4 gap-3">
           {filteredItems.map((item) => (
             <IssueCardItem
               key={item.id}
diff --git a/src/components/business/CEODashboard/sections/TodayIssueSection.tsx b/src/components/business/CEODashboard/sections/TodayIssueSection.tsx
index f19db36e..72e1591f 100644
--- a/src/components/business/CEODashboard/sections/TodayIssueSection.tsx
+++ b/src/components/business/CEODashboard/sections/TodayIssueSection.tsx
@@ -293,11 +293,11 @@ export function TodayIssueSection({ items }: TodayIssueSectionProps) {
 
           {/* 날짜 네비게이션 (이전 이슈 탭일 때만) */}
           {activeTab === 'past' && (
-            <div className="flex items-center gap-1 shrink-0">
+            <div className="flex items-center gap-1 min-w-0">
               <Button
                 variant="outline"
                 size="sm"
-                className="h-8 px-2"
+                className="h-8 px-1.5 shrink-0"
                 onClick={handlePrevDate}
               >
                 <ChevronLeft className="h-4 w-4" />
@@ -308,14 +308,14 @@ export function TodayIssueSection({ items }: TodayIssueSectionProps) {
                 onChange={handleDatePickerChange}
                 size="sm"
                 displayFormat="yyyy년 MM월 dd일"
-                className="w-[170px]"
+                className="min-w-0 flex-1"
                 align="start"
                 sideOffset={4}
               />
               <Button
                 variant="outline"
                 size="sm"
-                className="h-8 px-2"
+                className="h-8 px-1.5 shrink-0"
                 onClick={handleNextDate}
                 disabled={isNextDisabled}
               >
@@ -326,7 +326,7 @@ export function TodayIssueSection({ items }: TodayIssueSectionProps) {
 
           {/* 필터 */}
           <Select value={filter} onValueChange={setFilter}>
-            <SelectTrigger className="w-44 h-9 ml-auto">
+            <SelectTrigger className="w-44 h-9">
               <SelectValue placeholder="전체" />
             </SelectTrigger>
             <SelectContent>
diff --git a/src/components/business/CEODashboard/sections/UnshippedSection.tsx b/src/components/business/CEODashboard/sections/UnshippedSection.tsx
index 5973ce4f..b135cda7 100644
--- a/src/components/business/CEODashboard/sections/UnshippedSection.tsx
+++ b/src/components/business/CEODashboard/sections/UnshippedSection.tsx
@@ -78,7 +78,7 @@ export function UnshippedSection({ data }: UnshippedSectionProps) {
             </div>
           </div>
           <div className="overflow-x-auto">
-            <table className="w-full text-sm">
+            <table className="w-full text-sm min-w-[550px]">
               <thead>
                 <tr className="bg-gray-50 border-b">
                   <th className="px-4 py-2 text-center text-gray-600 font-medium w-12">No</th>
diff --git a/src/components/business/CEODashboard/sections/VatSection.tsx b/src/components/business/CEODashboard/sections/VatSection.tsx
index 9a04370b..2a230f58 100644
--- a/src/components/business/CEODashboard/sections/VatSection.tsx
+++ b/src/components/business/CEODashboard/sections/VatSection.tsx
@@ -15,7 +15,7 @@ export function VatSection({ data, onClick }: VatSectionProps) {
       <CardContent className="p-6">
         <SectionTitle title="부가세 현황" badge="warning" />
 
-        <div className="grid grid-cols-2 md:grid-cols-4 gap-4 mb-4">
+        <div className="grid grid-cols-1 sm:grid-cols-2 md:grid-cols-4 gap-4 mb-4">
           {data.cards.map((card) => (
             <AmountCardItem
               key={card.id}
diff --git a/src/components/hr/EmployeeManagement/EmployeeForm.tsx b/src/components/hr/EmployeeManagement/EmployeeForm.tsx
index 295c5529..97c03d17 100644
--- a/src/components/hr/EmployeeManagement/EmployeeForm.tsx
+++ b/src/components/hr/EmployeeManagement/EmployeeForm.tsx
@@ -46,6 +46,7 @@ import {
 } from './types';
 import { getPositions, getDepartments, uploadProfileImage, type PositionItem, type DepartmentItem } from './actions';
 import { getProfileImageUrl } from './utils';
+import { extractDigits } from '@/lib/formatters';
 
 // 부서 트리 구조 타입
 interface DepartmentTreeNode extends DepartmentItem {
@@ -272,7 +273,7 @@ export function EmployeeForm({
 
   // 휴대폰 번호 자동 하이픈 포맷팅
   const formatPhoneNumber = (value: string): string => {
-    const numbers = value.replace(/[^0-9]/g, '');
+    const numbers = extractDigits(value);
     if (numbers.length <= 3) return numbers;
     if (numbers.length <= 7) return `${numbers.slice(0, 3)}-${numbers.slice(3)}`;
     return `${numbers.slice(0, 3)}-${numbers.slice(3, 7)}-${numbers.slice(7, 11)}`;
@@ -280,7 +281,7 @@ export function EmployeeForm({
 
   // 주민등록번호 자동 하이픈 포맷팅
   const formatResidentNumber = (value: string): string => {
-    const numbers = value.replace(/[^0-9]/g, '');
+    const numbers = extractDigits(value);
     if (numbers.length <= 6) return numbers;
     return `${numbers.slice(0, 6)}-${numbers.slice(6, 13)}`;
   };
diff --git a/src/components/settings/CompanyInfoManagement/AddCompanyDialog.tsx b/src/components/settings/CompanyInfoManagement/AddCompanyDialog.tsx
index f1fb59fb..163b3714 100644
--- a/src/components/settings/CompanyInfoManagement/AddCompanyDialog.tsx
+++ b/src/components/settings/CompanyInfoManagement/AddCompanyDialog.tsx
@@ -20,6 +20,7 @@ import {
   AlertDialogHeader,
   AlertDialogTitle,
 } from '@/components/ui/alert-dialog';
+import { extractDigits } from '@/lib/formatters';
 
 interface AddCompanyDialogProps {
   open: boolean;
@@ -36,7 +37,7 @@ export function AddCompanyDialog({ open, onOpenChange }: AddCompanyDialogProps)
 
   // 숫자만 입력 가능 (10자리 제한)
   const handleBusinessNumberChange = (value: string) => {
-    const numbersOnly = value.replace(/[^0-9]/g, '');
+    const numbersOnly = extractDigits(value);
     if (numbersOnly.length <= 10) {
       setBusinessNumber(numbersOnly);
     }
diff --git a/src/components/settings/PaymentHistoryManagement/utils.ts b/src/components/settings/PaymentHistoryManagement/utils.ts
index 12590b68..fdf80687 100644
--- a/src/components/settings/PaymentHistoryManagement/utils.ts
+++ b/src/components/settings/PaymentHistoryManagement/utils.ts
@@ -1,6 +1,6 @@
 import type { PaymentApiData, PaymentHistory, PaymentStatus } from './types';
 import { PAYMENT_METHOD_LABELS } from './types';
-import { formatDate } from '@/lib/utils/date';
+import { formatDate, toDateString } from '@/lib/utils/date';
 
 // ===== API → Frontend 변환 =====
 export function transformApiToFrontend(apiData: PaymentApiData): PaymentHistory {
@@ -11,12 +11,12 @@ export function transformApiToFrontend(apiData: PaymentApiData): PaymentHistory
   const paymentMethodLabel = PAYMENT_METHOD_LABELS[apiData.payment_method] || apiData.payment_method;
 
   // 구독 기간
-  const periodStart = subscription?.started_at?.split('T')[0] || '';
-  const periodEnd = subscription?.ended_at?.split('T')[0] || '';
+  const periodStart = toDateString(subscription?.started_at);
+  const periodEnd = toDateString(subscription?.ended_at);
 
   return {
     id: String(apiData.id),
-    paymentDate: apiData.paid_at?.split('T')[0] || formatDate(apiData.created_at),
+    paymentDate: toDateString(apiData.paid_at) || formatDate(apiData.created_at),
     subscriptionName: plan?.name || '구독',
     paymentMethod: paymentMethodLabel,
     subscriptionPeriod: {
diff --git a/src/components/settings/PopupManagement/utils.ts b/src/components/settings/PopupManagement/utils.ts
index 18eab644..1c1a1ae0 100644
--- a/src/components/settings/PopupManagement/utils.ts
+++ b/src/components/settings/PopupManagement/utils.ts
@@ -3,6 +3,7 @@
  */
 
 import type { Popup, PopupFormData, PopupTarget, PopupStatus } from './types';
+import { toDateString } from '@/lib/utils/date';
 
 // ============================================
 // API 응답 타입 정의
@@ -55,9 +56,9 @@ export function transformApiToFrontend(apiData: PopupApiData): Popup {
     status: apiData.status as PopupStatus,
     author: apiData.creator?.name || '관리자',
     authorId: apiData.created_by ? String(apiData.created_by) : '',
-    createdAt: apiData.created_at?.split('T')[0] || '',
-    startDate: apiData.started_at?.split('T')[0] || '',
-    endDate: apiData.ended_at?.split('T')[0] || '',
+    createdAt: toDateString(apiData.created_at),
+    startDate: toDateString(apiData.started_at),
+    endDate: toDateString(apiData.ended_at),
   };
 }
 
diff --git a/src/lib/formatters.ts b/src/lib/formatters.ts
index 7980e228..54d801c8 100644
--- a/src/lib/formatters.ts
+++ b/src/lib/formatters.ts
@@ -165,6 +165,14 @@ export function parseNumber(formatted: string): number {
   return isNaN(num) ? 0 : num;
 }
 
+/**
+ * 숫자만 추출 (범용)
+ * 전화번호, 사업자번호 등 포맷팅 전처리에 사용
+ */
+export function extractDigits(value: string): string {
+  return value.replace(/\D/g, '');
+}
+
 /**
  * Leading zero 제거 (01 → 1)
  */
@@ -188,34 +196,3 @@ export function removeLeadingZeros(value: string): string {
   return value.replace(/^0+/, '') || '0';
 }
 
-/**
- * 숫자만 추출 (음수, 소수점 허용 옵션)
- */
-export function extractNumbers(value: string, options?: {
-  allowNegative?: boolean;
-  allowDecimal?: boolean;
-}): string {
-  const { allowNegative = false, allowDecimal = false } = options || {};
-
-  let pattern = '\\d';
-  if (allowNegative) pattern = '-?' + pattern;
-  if (allowDecimal) pattern = pattern + '|\\.';
-
-  const regex = new RegExp(`[^${allowNegative ? '-' : ''}${allowDecimal ? '.' : ''}\\d]`, 'g');
-  let result = value.replace(regex, '');
-
-  // 중복 마이너스 제거 (첫 번째만 유지)
-  if (allowNegative && result.includes('-')) {
-    const isNegative = result.startsWith('-');
-    result = result.replace(/-/g, '');
-    if (isNegative) result = '-' + result;
-  }
-
-  // 중복 소수점 제거 (첫 번째만 유지)
-  if (allowDecimal && result.includes('.')) {
-    const parts = result.split('.');
-    result = parts[0] + (parts.length > 1 ? '.' + parts.slice(1).join('') : '');
-  }
-
-  return result;
-}
\ No newline at end of file
diff --git a/src/lib/utils/date.ts b/src/lib/utils/date.ts
index c76fe152..490fda11 100644
--- a/src/lib/utils/date.ts
+++ b/src/lib/utils/date.ts
@@ -58,6 +58,17 @@ export function formatDateForInput(dateStr: string | null | undefined): string {
   return getLocalDateString(date);
 }
 
+/**
+ * ISO 문자열에서 날짜 부분(YYYY-MM-DD)만 추출
+ * null/undefined 시 빈 문자열 반환 (폼 데이터 변환용)
+ * @example toDateString("2025-01-06T00:00:00.000Z") // "2025-01-06"
+ * @example toDateString(null) // ""
+ */
+export function toDateString(isoString: string | null | undefined): string {
+  if (!isoString) return '';
+  return isoString.split('T')[0];
+}
+
 /**
  * 날짜 표시용 포맷 (YYYY-MM-DD)
  * @example formatDate("2025-01-06T00:00:00.000Z") // "2025-01-06"
diff --git a/src/lib/utils/validation/common.ts b/src/lib/utils/validation/common.ts
new file mode 100644
index 00000000..2081ab88
--- /dev/null
+++ b/src/lib/utils/validation/common.ts
@@ -0,0 +1,110 @@
+/**
+ * 공통 Zod 검증 스키마
+ *
+ * 품목명, 품목유형, 날짜, 숫자, BOM 등 여러 스키마에서 공유하는 기본 블록
+ */
+
+import { z } from 'zod';
+
+// ===== 내부 전용 스키마 =====
+
+/**
+ * 품목 코드 검증
+ * 형식: {업체코드}-{품목유형}-{일련번호}
+ * 예: KD-FG-001
+ *
+ * 현재 사용하지 않음 (품목 코드 자동 생성)
+ */
+export const _itemCodeSchema = z.string()
+  .min(1, '품목 코드를 입력해주세요')
+  .regex(
+    /^[A-Z0-9]+-[A-Z]{2}-\d+$/,
+    '품목 코드 형식이 올바르지 않습니다 (예: KD-FG-001)'
+  );
+
+// ===== 공통 필드 스키마 =====
+
+/**
+ * 품목명 검증
+ */
+export const itemNameSchema = z.preprocess(
+  (val) => val === undefined || val === null ? "" : val,
+  z.string().min(1, '품목명을 입력해주세요').max(200, '품목명은 200자 이내로 입력해주세요')
+);
+
+/**
+ * 품목 유형 검증
+ */
+export const itemTypeSchema = z.enum(['FG', 'PT', 'SM', 'RM', 'CS'], {
+  message: '품목 유형을 선택해주세요',
+});
+
+/**
+ * 단위 검증
+ *
+ * 현재 사용하지 않음 (materialUnitSchema로 대체)
+ */
+export const _unitSchema = z.string()
+  .min(1, '단위를 입력해주세요')
+  .max(20, '단위는 20자 이내로 입력해주세요');
+
+/**
+ * 양수 검증 (가격, 수량 등)
+ * undefined나 빈 문자열은 검증하지 않음
+ */
+export const positiveNumberSchema = z.union([
+  z.number().positive('0보다 큰 값을 입력해주세요'),
+  z.string().transform((val) => parseFloat(val)).pipe(z.number().positive('0보다 큰 값을 입력해주세요')),
+  z.undefined(),
+  z.null(),
+  z.literal('')
+]).optional();
+
+/**
+ * 날짜 검증 (YYYY-MM-DD)
+ * 빈 문자열이나 undefined는 검증하지 않음
+ */
+export const dateSchema = z.preprocess(
+  (val) => {
+    if (val === undefined || val === null || val === '') return undefined;
+    return val;
+  },
+  z.string()
+    .regex(/^\d{4}-\d{2}-\d{2}$/, '날짜 형식이 올바르지 않습니다 (YYYY-MM-DD)')
+    .optional()
+);
+
+// ===== BOM 라인 스키마 =====
+
+/**
+ * 절곡품 전개도 상세 스키마
+ */
+export const bendingDetailSchema = z.object({
+  id: z.string(),
+  no: z.number().int().positive(),
+  input: z.number(),
+  elongation: z.number().default(-1),
+  calculated: z.number(),
+  sum: z.number(),
+  shaded: z.boolean().default(false),
+  aAngle: z.number().optional(),
+});
+
+/**
+ * BOM 라인 스키마
+ */
+export const bomLineSchema = z.object({
+  id: z.string(),
+  childItemCode: z.string().min(1, '하위 품목 코드를 입력해주세요'),
+  childItemName: z.string().min(1, '하위 품목명을 입력해주세요'),
+  quantity: z.number().positive('수량은 0보다 커야 합니다'),
+  unit: z.string().min(1, '단위를 입력해주세요'),
+  unitPrice: positiveNumberSchema,
+  quantityFormula: z.string().optional(),
+  note: z.string().max(500).optional(),
+
+  // 절곡품 관련
+  isBending: z.boolean().optional(),
+  bendingDiagram: z.string().url().optional(),
+  bendingDetails: z.array(bendingDetailSchema).optional(),
+});
diff --git a/src/lib/utils/validation/form-schemas.ts b/src/lib/utils/validation/form-schemas.ts
new file mode 100644
index 00000000..25cd6988
--- /dev/null
+++ b/src/lib/utils/validation/form-schemas.ts
@@ -0,0 +1,191 @@
+/**
+ * 폼 데이터 Zod 검증 스키마
+ *
+ * 품목 생성/수정/필터용 스키마
+ */
+
+import { z } from 'zod';
+import { itemTypeSchema, bendingDetailSchema } from './common';
+import {
+  productSchema,
+  productSchemaBase,
+  partSchemaBase,
+  materialSchemaBase,
+  materialSchema,
+  consumableSchemaBase,
+  consumableSchema,
+} from './item-schemas';
+
+// ===== 폼 데이터 스키마 (생성/수정용) =====
+
+/**
+ * 품목 생성 폼 스키마
+ * (id, createdAt, updatedAt 제외)
+ *
+ * discriminatedUnion은 omit()을 지원하지 않으므로,
+ * 각 스키마에 대해 개별적으로 omit을 적용합니다.
+ */
+// partSchemaBase를 omit한 후 itemType merge - refinement는 마지막에 적용
+const partSchemaForForm = partSchemaBase
+  .omit({ createdAt: true, updatedAt: true })
+  .merge(z.object({ itemType: z.literal('PT') }))
+  .superRefine((data, ctx) => {
+    // 1단계: 부품 유형 필수
+    if (!data.partType || data.partType === '') {
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: '부품 유형을 선택해주세요',
+        path: ['partType'],
+      });
+      return; // 부품 유형이 없으면 더 이상 검증하지 않음
+    }
+
+    // 2단계: 부품 유형이 있을 때만 품목명 필수
+    if (!data.category1 || data.category1 === '') {
+      ctx.addIssue({
+        code: z.ZodIssueCode.custom,
+        message: '품목명을 선택해주세요',
+        path: ['category1'],
+      });
+      return; // 품목명이 없으면 더 이상 검증하지 않음 (설치유형 등 체크 안 함)
+    }
+
+    // 3단계: 조립 부품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
+    if (data.partType === 'ASSEMBLY') {
+      if (!data.installationType) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '설치 유형을 선택해주세요',
+          path: ['installationType'],
+        });
+      }
+      if (!data.sideSpecWidth) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '측면 규격 (가로)를 입력해주세요',
+          path: ['sideSpecWidth'],
+        });
+      }
+      if (!data.sideSpecHeight) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '측면 규격 (세로)를 입력해주세요',
+          path: ['sideSpecHeight'],
+        });
+      }
+      if (!data.assemblyLength) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '길이를 선택해주세요',
+          path: ['assemblyLength'],
+        });
+      }
+    }
+
+    // 절곡품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
+    if (data.partType === 'BENDING') {
+      // 단계별 검증: 종류(category2) → 재질(material) → 폭 합계 → 모양&길이
+      if (!data.category2 || data.category2 === '') {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '종류를 선택해주세요',
+          path: ['category2'],
+        });
+        return; // 종류가 없으면 재질, 폭 합계, 모양&길이 체크 안 함
+      }
+      if (!data.material) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '재질을 선택해주세요',
+          path: ['material'],
+        });
+        return; // 재질이 없으면 폭 합계, 모양&길이 체크 안 함
+      }
+      if (!data.length) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '폭 합계를 입력해주세요',
+          path: ['length'],
+        });
+        return; // 폭 합계가 없으면 모양&길이 체크 안 함
+      }
+      if (!data.bendingLength) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '모양&길이를 선택해주세요',
+          path: ['bendingLength'],
+        });
+      }
+    }
+
+    // 구매 부품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
+    if (data.partType === 'PURCHASED') {
+      if (data.category1 === 'electric_opener') {
+        if (!data.electricOpenerPower) {
+          ctx.addIssue({
+            code: z.ZodIssueCode.custom,
+            message: '전원을 선택해주세요',
+            path: ['electricOpenerPower'],
+          });
+        }
+        if (!data.electricOpenerCapacity) {
+          ctx.addIssue({
+            code: z.ZodIssueCode.custom,
+            message: '용량을 선택해주세요',
+            path: ['electricOpenerCapacity'],
+          });
+        }
+      }
+      if (data.category1 === 'motor' && !data.motorVoltage) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '전압을 선택해주세요',
+          path: ['motorVoltage'],
+        });
+      }
+      if (data.category1 === 'chain' && !data.chainSpec) {
+        ctx.addIssue({
+          code: z.ZodIssueCode.custom,
+          message: '체인 규격을 선택해주세요',
+          path: ['chainSpec'],
+        });
+      }
+    }
+  });
+
+export const createItemFormSchema = z.discriminatedUnion('itemType', [
+  productSchema.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('FG') }),
+  partSchemaForForm, // itemType이 이미 merge되어 있음
+  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('SM') }),
+  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('RM') }),
+  consumableSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('CS') }),
+]);
+
+/**
+ * 품목 수정 폼 스키마
+ * (모든 필드 선택적)
+ *
+ * discriminatedUnion은 partial()도 지원하지 않으므로,
+ * 각 스키마에 대해 개별적으로 처리합니다.
+ */
+export const updateItemFormSchema = z.discriminatedUnion('itemType', [
+  productSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('FG') }),
+  partSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('PT') }),
+  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('SM') }),
+  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('RM') }),
+  consumableSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('CS') }),
+]);
+
+// ===== 필터 스키마 =====
+
+/**
+ * 품목 목록 필터 스키마
+ */
+export const itemFilterSchema = z.object({
+  itemType: itemTypeSchema.optional(),
+  search: z.string().optional(),
+  category1: z.string().optional(),
+  category2: z.string().optional(),
+  category3: z.string().optional(),
+  isActive: z.boolean().optional(),
+});
diff --git a/src/lib/utils/validation/index.ts b/src/lib/utils/validation/index.ts
new file mode 100644
index 00000000..e8527bfa
--- /dev/null
+++ b/src/lib/utils/validation/index.ts
@@ -0,0 +1,31 @@
+/**
+ * Zod 검증 스키마 barrel export
+ *
+ * 기존 `@/lib/utils/validation` 경로 호환성 유지
+ */
+
+// common
+export { bendingDetailSchema, bomLineSchema } from './common';
+
+// item-schemas
+export {
+  productSchema,
+  partSchema,
+  materialSchema,
+  consumableSchema,
+  itemMasterSchema,
+} from './item-schemas';
+
+// form-schemas
+export { createItemFormSchema, updateItemFormSchema, itemFilterSchema } from './form-schemas';
+
+// utils
+export { getSchemaByItemType, formatZodError } from './utils';
+export type {
+  ItemMasterFormData,
+  CreateItemFormData,
+  UpdateItemFormData,
+  ItemFilterFormData,
+  BOMLineFormData,
+  BendingDetailFormData,
+} from './utils';
diff --git a/src/lib/utils/validation.ts b/src/lib/utils/validation/item-schemas.ts
similarity index 52%
rename from src/lib/utils/validation.ts
rename to src/lib/utils/validation/item-schemas.ts
index b8efc0e3..0d910b59 100644
--- a/src/lib/utils/validation.ts
+++ b/src/lib/utils/validation/item-schemas.ts
@@ -1,119 +1,25 @@
 /**
- * Zod 검증 스키마
+ * 품목유형별 Zod 검증 스키마
  *
- * react-hook-form과 함께 사용하는 폼 검증
+ * FG(제품), PT(부품), SM/RM(원자재/부자재), CS(소모품) 스키마 정의
  */
 
 import { z } from 'zod';
-import type { ItemType } from '@/types/item';
-
-// ===== 공통 스키마 =====
-
-/**
- * 품목 코드 검증
- * 형식: {업체코드}-{품목유형}-{일련번호}
- * 예: KD-FG-001
- *
- * 현재 사용하지 않음 (품목 코드 자동 생성)
- */
-const _itemCodeSchema = z.string()
-  .min(1, '품목 코드를 입력해주세요')
-  .regex(
-    /^[A-Z0-9]+-[A-Z]{2}-\d+$/,
-    '품목 코드 형식이 올바르지 않습니다 (예: KD-FG-001)'
-  );
-
-/**
- * 품목명 검증
- */
-const itemNameSchema = z.preprocess(
-  (val) => val === undefined || val === null ? "" : val,
-  z.string().min(1, '품목명을 입력해주세요').max(200, '품목명은 200자 이내로 입력해주세요')
-);
-
-/**
- * 품목 유형 검증
- */
-const itemTypeSchema = z.enum(['FG', 'PT', 'SM', 'RM', 'CS'], {
-  message: '품목 유형을 선택해주세요',
-});
-
-/**
- * 단위 검증
- *
- * 현재 사용하지 않음 (materialUnitSchema로 대체)
- */
-const _unitSchema = z.string()
-  .min(1, '단위를 입력해주세요')
-  .max(20, '단위는 20자 이내로 입력해주세요');
-
-/**
- * 양수 검증 (가격, 수량 등)
- * undefined나 빈 문자열은 검증하지 않음
- */
-const positiveNumberSchema = z.union([
-  z.number().positive('0보다 큰 값을 입력해주세요'),
-  z.string().transform((val) => parseFloat(val)).pipe(z.number().positive('0보다 큰 값을 입력해주세요')),
-  z.undefined(),
-  z.null(),
-  z.literal('')
-]).optional();
-
-/**
- * 날짜 검증 (YYYY-MM-DD)
- * 빈 문자열이나 undefined는 검증하지 않음
- */
-const dateSchema = z.preprocess(
-  (val) => {
-    if (val === undefined || val === null || val === '') return undefined;
-    return val;
-  },
-  z.string()
-    .regex(/^\d{4}-\d{2}-\d{2}$/, '날짜 형식이 올바르지 않습니다 (YYYY-MM-DD)')
-    .optional()
-);
-
-// ===== BOM 라인 스키마 =====
-
-/**
- * 절곡품 전개도 상세 스키마
- */
-export const bendingDetailSchema = z.object({
-  id: z.string(),
-  no: z.number().int().positive(),
-  input: z.number(),
-  elongation: z.number().default(-1),
-  calculated: z.number(),
-  sum: z.number(),
-  shaded: z.boolean().default(false),
-  aAngle: z.number().optional(),
-});
-
-/**
- * BOM 라인 스키마
- */
-export const bomLineSchema = z.object({
-  id: z.string(),
-  childItemCode: z.string().min(1, '하위 품목 코드를 입력해주세요'),
-  childItemName: z.string().min(1, '하위 품목명을 입력해주세요'),
-  quantity: z.number().positive('수량은 0보다 커야 합니다'),
-  unit: z.string().min(1, '단위를 입력해주세요'),
-  unitPrice: positiveNumberSchema,
-  quantityFormula: z.string().optional(),
-  note: z.string().max(500).optional(),
-
-  // 절곡품 관련
-  isBending: z.boolean().optional(),
-  bendingDiagram: z.string().url().optional(),
-  bendingDetails: z.array(bendingDetailSchema).optional(),
-});
+import {
+  itemNameSchema,
+  itemTypeSchema,
+  dateSchema,
+  positiveNumberSchema,
+  bomLineSchema,
+  bendingDetailSchema,
+} from './common';
 
 // ===== 품목 마스터 기본 스키마 =====
 
 /**
  * 품목 마스터 공통 필드
  */
-const itemMasterBaseSchema = z.object({
+export const itemMasterBaseSchema = z.object({
   // 공통 필수 필드
   itemCode: z.string().optional(), // 자동생성되므로 선택 사항
   itemName: itemNameSchema,
@@ -185,7 +91,7 @@ const productFieldsSchema = z.object({
  * 제품(FG) 전체 스키마 (refinement 없이)
  * 제품에는 가격 정보가 없으므로 제거
  */
-const productSchemaBase = itemMasterBaseSchema
+export const productSchemaBase = itemMasterBaseSchema
   .omit({
     purchasePrice: true,
     salesPrice: true,
@@ -268,7 +174,7 @@ const partFieldsSchema = z.object({
  * 부품(PT) 전체 스키마 (refinement 없이)
  * 부품은 itemName을 사용하지 않으므로 선택 사항으로 변경
  */
-const partSchemaBase = itemMasterBaseSchema
+export const partSchemaBase = itemMasterBaseSchema
   .extend({
     itemName: z.string().max(200).optional(), // 부품은 itemName 선택 사항
   })
@@ -422,7 +328,7 @@ const materialUnitSchema = z.preprocess(
  * 원자재/부자재 Base 스키마 (refinement 없음, 필드만 정의)
  * specification, unit을 필수로 정의 (z.object로 완전히 새로 정의)
  */
-const materialSchemaBase = z.object({
+export const materialSchemaBase = z.object({
   // 공통 필수 필드
   itemCode: z.string().optional(),
   itemName: itemNameSchema,
@@ -479,7 +385,7 @@ export const materialSchema = materialSchemaBase;
  * 소모품 Base 스키마
  * specification, unit을 필수로 오버라이드
  */
-const consumableSchemaBase = itemMasterBaseSchema
+export const consumableSchemaBase = itemMasterBaseSchema
   .extend({
     specification: materialSpecificationSchema, // optional → 필수로 변경
     unit: materialUnitSchema, // optional → 필수로 변경
@@ -505,221 +411,3 @@ export const itemMasterSchema = z.discriminatedUnion('itemType', [
   materialSchema.extend({ itemType: z.literal('RM') }),
   consumableSchema.extend({ itemType: z.literal('CS') }),
 ]);
-
-// ===== 폼 데이터 스키마 (생성/수정용) =====
-
-/**
- * 품목 생성 폼 스키마
- * (id, createdAt, updatedAt 제외)
- *
- * discriminatedUnion은 omit()을 지원하지 않으므로,
- * 각 스키마에 대해 개별적으로 omit을 적용합니다.
- */
-// partSchemaBase를 omit한 후 itemType merge - refinement는 마지막에 적용
-const partSchemaForForm = partSchemaBase
-  .omit({ createdAt: true, updatedAt: true })
-  .merge(z.object({ itemType: z.literal('PT') }))
-  .superRefine((data, ctx) => {
-    // 1단계: 부품 유형 필수
-    if (!data.partType || data.partType === '') {
-      ctx.addIssue({
-        code: z.ZodIssueCode.custom,
-        message: '부품 유형을 선택해주세요',
-        path: ['partType'],
-      });
-      return; // 부품 유형이 없으면 더 이상 검증하지 않음
-    }
-
-    // 2단계: 부품 유형이 있을 때만 품목명 필수
-    if (!data.category1 || data.category1 === '') {
-      ctx.addIssue({
-        code: z.ZodIssueCode.custom,
-        message: '품목명을 선택해주세요',
-        path: ['category1'],
-      });
-      return; // 품목명이 없으면 더 이상 검증하지 않음 (설치유형 등 체크 안 함)
-    }
-
-    // 3단계: 조립 부품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
-    if (data.partType === 'ASSEMBLY') {
-      if (!data.installationType) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '설치 유형을 선택해주세요',
-          path: ['installationType'],
-        });
-      }
-      if (!data.sideSpecWidth) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '측면 규격 (가로)를 입력해주세요',
-          path: ['sideSpecWidth'],
-        });
-      }
-      if (!data.sideSpecHeight) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '측면 규격 (세로)를 입력해주세요',
-          path: ['sideSpecHeight'],
-        });
-      }
-      if (!data.assemblyLength) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '길이를 선택해주세요',
-          path: ['assemblyLength'],
-        });
-      }
-    }
-
-    // 절곡품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
-    if (data.partType === 'BENDING') {
-      // 단계별 검증: 종류(category2) → 재질(material) → 폭 합계 → 모양&길이
-      if (!data.category2 || data.category2 === '') {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '종류를 선택해주세요',
-          path: ['category2'],
-        });
-        return; // 종류가 없으면 재질, 폭 합계, 모양&길이 체크 안 함
-      }
-      if (!data.material) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '재질을 선택해주세요',
-          path: ['material'],
-        });
-        return; // 재질이 없으면 폭 합계, 모양&길이 체크 안 함
-      }
-      if (!data.length) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '폭 합계를 입력해주세요',
-          path: ['length'],
-        });
-        return; // 폭 합계가 없으면 모양&길이 체크 안 함
-      }
-      if (!data.bendingLength) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '모양&길이를 선택해주세요',
-          path: ['bendingLength'],
-        });
-      }
-    }
-
-    // 구매 부품 전용 필드 (partType과 category1이 모두 있을 때만 실행됨)
-    if (data.partType === 'PURCHASED') {
-      if (data.category1 === 'electric_opener') {
-        if (!data.electricOpenerPower) {
-          ctx.addIssue({
-            code: z.ZodIssueCode.custom,
-            message: '전원을 선택해주세요',
-            path: ['electricOpenerPower'],
-          });
-        }
-        if (!data.electricOpenerCapacity) {
-          ctx.addIssue({
-            code: z.ZodIssueCode.custom,
-            message: '용량을 선택해주세요',
-            path: ['electricOpenerCapacity'],
-          });
-        }
-      }
-      if (data.category1 === 'motor' && !data.motorVoltage) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '전압을 선택해주세요',
-          path: ['motorVoltage'],
-        });
-      }
-      if (data.category1 === 'chain' && !data.chainSpec) {
-        ctx.addIssue({
-          code: z.ZodIssueCode.custom,
-          message: '체인 규격을 선택해주세요',
-          path: ['chainSpec'],
-        });
-      }
-    }
-  });
-
-export const createItemFormSchema = z.discriminatedUnion('itemType', [
-  productSchema.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('FG') }),
-  partSchemaForForm, // itemType이 이미 merge되어 있음
-  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('SM') }),
-  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('RM') }),
-  consumableSchemaBase.omit({ createdAt: true, updatedAt: true }).extend({ itemType: z.literal('CS') }),
-]);
-
-/**
- * 품목 수정 폼 스키마
- * (모든 필드 선택적)
- *
- * discriminatedUnion은 partial()도 지원하지 않으므로,
- * 각 스키마에 대해 개별적으로 처리합니다.
- */
-export const updateItemFormSchema = z.discriminatedUnion('itemType', [
-  productSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('FG') }),
-  partSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('PT') }),
-  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('SM') }),
-  materialSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('RM') }),
-  consumableSchemaBase.omit({ createdAt: true, updatedAt: true }).partial().extend({ itemType: z.literal('CS') }),
-]);
-
-// ===== 필터 스키마 =====
-
-/**
- * 품목 목록 필터 스키마
- */
-export const itemFilterSchema = z.object({
-  itemType: itemTypeSchema.optional(),
-  search: z.string().optional(),
-  category1: z.string().optional(),
-  category2: z.string().optional(),
-  category3: z.string().optional(),
-  isActive: z.boolean().optional(),
-});
-
-// ===== 타입 추출 =====
-
-export type ItemMasterFormData = z.infer<typeof itemMasterSchema>;
-export type CreateItemFormData = z.infer<typeof createItemFormSchema>;
-export type UpdateItemFormData = z.infer<typeof updateItemFormSchema>;
-export type ItemFilterFormData = z.infer<typeof itemFilterSchema>;
-export type BOMLineFormData = z.infer<typeof bomLineSchema>;
-export type BendingDetailFormData = z.infer<typeof bendingDetailSchema>;
-
-// ===== 유틸리티 함수 =====
-
-/**
- * 품목 유형에 따른 스키마 선택
- */
-export function getSchemaByItemType(itemType: ItemType) {
-  switch (itemType) {
-    case 'FG':
-      return productSchema;
-    case 'PT':
-      return partSchema;
-    case 'SM':
-    case 'RM':
-      return materialSchema;
-    case 'CS':
-      return consumableSchema;
-    default:
-      return itemMasterBaseSchema;
-  }
-}
-
-/**
- * 에러 메시지 한글화
- */
-export function formatZodError(error: z.ZodError): Record<string, string> {
-  const formatted: Record<string, string> = {};
-
-  error.issues.forEach((err) => {
-    const path = err.path.join('.');
-    formatted[path] = err.message;
-  });
-
-  return formatted;
-}
\ No newline at end of file
diff --git a/src/lib/utils/validation/utils.ts b/src/lib/utils/validation/utils.ts
new file mode 100644
index 00000000..f343358c
--- /dev/null
+++ b/src/lib/utils/validation/utils.ts
@@ -0,0 +1,64 @@
+/**
+ * 검증 유틸리티 함수 및 타입 추출
+ */
+
+import { z } from 'zod';
+import type { ItemType } from '@/types/item';
+import { bendingDetailSchema, bomLineSchema } from './common';
+import {
+  productSchema,
+  partSchema,
+  materialSchema,
+  consumableSchema,
+  itemMasterSchema,
+  itemMasterBaseSchema,
+} from './item-schemas';
+import {
+  createItemFormSchema,
+  updateItemFormSchema,
+  itemFilterSchema,
+} from './form-schemas';
+
+// ===== 타입 추출 =====
+
+export type ItemMasterFormData = z.infer<typeof itemMasterSchema>;
+export type CreateItemFormData = z.infer<typeof createItemFormSchema>;
+export type UpdateItemFormData = z.infer<typeof updateItemFormSchema>;
+export type ItemFilterFormData = z.infer<typeof itemFilterSchema>;
+export type BOMLineFormData = z.infer<typeof bomLineSchema>;
+export type BendingDetailFormData = z.infer<typeof bendingDetailSchema>;
+
+// ===== 유틸리티 함수 =====
+
+/**
+ * 품목 유형에 따른 스키마 선택
+ */
+export function getSchemaByItemType(itemType: ItemType) {
+  switch (itemType) {
+    case 'FG':
+      return productSchema;
+    case 'PT':
+      return partSchema;
+    case 'SM':
+    case 'RM':
+      return materialSchema;
+    case 'CS':
+      return consumableSchema;
+    default:
+      return itemMasterBaseSchema;
+  }
+}
+
+/**
+ * 에러 메시지 한글화
+ */
+export function formatZodError(error: z.ZodError): Record<string, string> {
+  const formatted: Record<string, string> = {};
+
+  error.issues.forEach((err) => {
+    const path = err.path.join('.');
+    formatted[path] = err.message;
+  });
+
+  return formatted;
+}