diff --git a/backend-node/src/routes/popActionRoutes.ts b/backend-node/src/routes/popActionRoutes.ts
index 669cc960..6a997e32 100644
--- a/backend-node/src/routes/popActionRoutes.ts
+++ b/backend-node/src/routes/popActionRoutes.ts
@@ -183,7 +183,8 @@ router.post("/execute-action", authenticateToken, async (req: Request, res: Resp
             const cardMapping = mappings?.cardList;
             const fieldMapping = mappings?.field;
 
-            if (cardMapping?.targetTable && Object.keys(cardMapping.columnMapping).length > 0) {
+            if (cardMapping?.targetTable && Object.keys(cardMapping.columnMapping).length > 0 && items.length > 0) {
+              // ── 카드리스트 기반 INSERT (기존: items 반복) ──
               if (!isSafeIdentifier(cardMapping.targetTable)) {
                 throw new Error(`유효하지 않은 테이블명: ${cardMapping.targetTable}`);
               }
@@ -300,6 +301,84 @@ router.post("/execute-action", authenticateToken, async (req: Request, res: Resp
                   insertedCount++;
                 }
               }
+            } else if (
+              // ── 필드 단독 INSERT (카드리스트 없이 pop-field만으로 저장) ──
+              items.length === 0 &&
+              fieldMapping?.targetTable &&
+              Object.keys(fieldMapping.columnMapping).length > 0 &&
+              Object.keys(fieldValues).length > 0
+            ) {
+              if (!isSafeIdentifier(fieldMapping.targetTable)) {
+                throw new Error(`유효하지 않은 테이블명: ${fieldMapping.targetTable}`);
+              }
+
+              const columns: string[] = ["company_code"];
+              const values: unknown[] = [companyCode];
+
+              // 필드 매핑 값 추가
+              for (const [sourceField, targetColumn] of Object.entries(fieldMapping.columnMapping)) {
+                if (!isSafeIdentifier(targetColumn)) continue;
+                columns.push(`"${targetColumn}"`);
+                values.push(fieldValues[sourceField] ?? null);
+              }
+
+              // hiddenMappings 처리
+              for (const hm of (fieldMapping.hiddenMappings ?? [])) {
+                if (!hm.targetColumn || !isSafeIdentifier(hm.targetColumn)) continue;
+                if (columns.includes(`"${hm.targetColumn}"`)) continue;
+                let value: unknown = null;
+                if (hm.valueSource === "static") {
+                  value = hm.staticValue ?? null;
+                } else if (hm.valueSource === "db_column" && hm.sourceDbColumn) {
+                  value = fieldValues[hm.sourceDbColumn] ?? null;
+                }
+                columns.push(`"${hm.targetColumn}"`);
+                values.push(value);
+              }
+
+              // autoGenMappings 채번 처리
+              for (const ag of (fieldMapping.autoGenMappings ?? [])) {
+                if (!ag.numberingRuleId || !ag.targetColumn) continue;
+                if (!isSafeIdentifier(ag.targetColumn)) continue;
+                if (columns.includes(`"${ag.targetColumn}"`)) continue;
+                try {
+                  const generatedCode = await numberingRuleService.allocateCode(
+                    ag.numberingRuleId, companyCode, fieldValues,
+                  );
+                  columns.push(`"${ag.targetColumn}"`);
+                  values.push(generatedCode);
+                  generatedCodes.push({ targetColumn: ag.targetColumn, code: generatedCode, showResultModal: ag.showResultModal ?? false });
+                } catch (err: any) {
+                  logger.error("[pop/execute-action] 필드 단독 채번 실패", { ruleId: ag.numberingRuleId, error: err.message });
+                }
+              }
+
+              // 자동 필드 추가 (created_date, updated_date, writer)
+              if (!columns.includes('"created_date"')) {
+                columns.push('"created_date"');
+                values.push(new Date().toISOString());
+              }
+              if (!columns.includes('"updated_date"')) {
+                columns.push('"updated_date"');
+                values.push(new Date().toISOString());
+              }
+              if (!columns.includes('"writer"') && userId) {
+                columns.push('"writer"');
+                values.push(userId);
+              }
+
+              if (columns.length > 1) {
+                const placeholders = values.map((_, i) => `$${i + 1}`).join(", ");
+                await client.query(
+                  `INSERT INTO "${fieldMapping.targetTable}" (${columns.join(", ")}) VALUES (${placeholders})`,
+                  values,
+                );
+                insertedCount++;
+                logger.info("[pop/execute-action] 필드 단독 INSERT 실행", {
+                  table: fieldMapping.targetTable,
+                  columnCount: columns.length,
+                });
+              }
             }
             break;
           }
diff --git a/frontend/components/pop/viewer/PopViewerWithModals.tsx b/frontend/components/pop/viewer/PopViewerWithModals.tsx
index 0688d6cb..7500348c 100644
--- a/frontend/components/pop/viewer/PopViewerWithModals.tsx
+++ b/frontend/components/pop/viewer/PopViewerWithModals.tsx
@@ -231,12 +231,14 @@ export default function PopViewerWithModals({
                 if (!isTopModal || !closeOnEsc) e.preventDefault();
               }}
             >
-              {definition.title && (
+              {definition.title ? (
                 <DialogHeader className={isFull ? "shrink-0 border-b px-4 py-2" : "px-4 pt-4 pb-2"}>
                   <DialogTitle className="text-base">
                     {definition.title}
                   </DialogTitle>
                 </DialogHeader>
+              ) : (
+                <DialogTitle className="sr-only">팝업</DialogTitle>
               )}
               <div className={isFull ? "flex-1 overflow-auto" : "px-4 pb-4"}>
                 <PopRenderer
diff --git a/frontend/lib/registry/pop-components/pop-field/PopFieldComponent.tsx b/frontend/lib/registry/pop-components/pop-field/PopFieldComponent.tsx
index 16b68ca3..8e79d95a 100644
--- a/frontend/lib/registry/pop-components/pop-field/PopFieldComponent.tsx
+++ b/frontend/lib/registry/pop-components/pop-field/PopFieldComponent.tsx
@@ -464,13 +464,13 @@ export function PopFieldComponent({
       ref={containerRef}
       className="flex h-full w-full flex-col gap-2 overflow-auto p-1"
     >
-      {cfg.sections.map((section) => {
+      {cfg.sections.map((section, sIdx) => {
         const fields = section.fields || [];
         const fieldCount = fields.length;
         if (fieldCount === 0) return null;
         const cols = resolveColumns(section.columns, fieldCount);
         return (
-          <div key={section.id} className={sectionClassName(section)}>
+          <div key={section.id || `section-${sIdx}`} className={sectionClassName(section)}>
             {section.label && (
               <div className="mb-1 text-xs font-medium text-muted-foreground">
                 {section.label}
@@ -480,17 +480,17 @@ export function PopFieldComponent({
               className="grid gap-3"
               style={{ gridTemplateColumns: `repeat(${cols}, 1fr)` }}
             >
-              {fields.map((field) => {
+              {fields.map((field, fIdx) => {
                 const fKey = field.fieldName || field.id;
                 return (
                   <FieldRenderer
-                    key={field.id}
+                    key={field.id || `field-${sIdx}-${fIdx}`}
                     field={{ ...field, fieldName: fKey }}
                     value={allValues[fKey]}
                     showLabel={section.showLabels}
                     error={errors[fKey]}
                     onChange={handleFieldChange}
-                    sectionStyle={section.style}
+                    sectionStyle={migrateStyle(section.style)}
                     allValues={allValues}
                     fieldIdToName={fieldIdToName}
                   />
@@ -506,8 +506,8 @@ export function PopFieldComponent({
             className="grid gap-3"
             style={{ gridTemplateColumns: `repeat(${resolveColumns("auto", visibleAutoGens.length)}, 1fr)` }}
           >
-            {visibleAutoGens.map((ag) => (
-              <AutoGenFieldDisplay key={ag.id} mapping={ag} />
+            {visibleAutoGens.map((ag, agIdx) => (
+              <AutoGenFieldDisplay key={ag.id || `autogen-${agIdx}`} mapping={ag} />
             ))}
           </div>
         </div>
@@ -546,7 +546,7 @@ function FieldRenderer({
     [onChange, field.fieldName]
   );
 
-  const resolvedStyle = sectionStyle === "summary" ? "display" : sectionStyle === "form" ? "input" : sectionStyle;
+  const resolvedStyle = sectionStyle;
   const inputClassName = cn(
     "h-9 w-full rounded-md border px-3 text-sm",
     field.readOnly
@@ -740,7 +740,12 @@ function SelectFieldInput({
     if (!source) return;
 
     if (source.type === "static" && source.staticOptions) {
-      setOptions(source.staticOptions);
+      setOptions(
+        source.staticOptions.map((o) => ({
+          value: String(o.value ?? ""),
+          label: String(o.label ?? ""),
+        }))
+      );
       return;
     }
 
@@ -850,8 +855,8 @@ function SelectFieldInput({
             {emptyMessage}
           </div>
         ) : (
-          options.map((opt) => (
-            <SelectItem key={opt.value} value={opt.value}>
+          options.map((opt, idx) => (
+            <SelectItem key={opt.value || `opt-${idx}`} value={opt.value || `__empty_${idx}`}>
               {opt.label}
             </SelectItem>
           ))
diff --git a/frontend/lib/registry/pop-components/pop-field/index.tsx b/frontend/lib/registry/pop-components/pop-field/index.tsx
index 60ed1ba7..f5b234b0 100644
--- a/frontend/lib/registry/pop-components/pop-field/index.tsx
+++ b/frontend/lib/registry/pop-components/pop-field/index.tsx
@@ -30,10 +30,10 @@ function PopFieldPreviewComponent({
         {label || "입력 필드"}
       </span>
       <div className="flex flex-wrap gap-1">
-        {cfg.sections.map((section) =>
-          (section.fields || []).slice(0, 3).map((field) => (
+        {cfg.sections.map((section, sIdx) =>
+          (section.fields || []).slice(0, 3).map((field, fIdx) => (
             <div
-              key={field.id}
+              key={field.id || `preview-${sIdx}-${fIdx}`}
               className="flex h-5 items-center rounded border border-dashed border-muted-foreground/30 px-1.5"
             >
               <span className="text-[8px] text-muted-foreground">
diff --git a/frontend/lib/registry/pop-components/pop-work-detail/PopWorkDetailComponent.tsx b/frontend/lib/registry/pop-components/pop-work-detail/PopWorkDetailComponent.tsx
index b20c2830..2465cb80 100644
--- a/frontend/lib/registry/pop-components/pop-work-detail/PopWorkDetailComponent.tsx
+++ b/frontend/lib/registry/pop-components/pop-work-detail/PopWorkDetailComponent.tsx
@@ -288,6 +288,15 @@ export function PopWorkDetailComponent({
   const { getSharedData, publish } = usePopEvent(screenId || "default");
   const { user } = useAuth();
 
+  // 모달 내부 렌더링 감지: 부모에 [role="dialog"]가 있으면 모달 모드
+  const containerRef = useRef<HTMLDivElement>(null);
+  const [isInModal, setIsInModal] = useState(false);
+  useEffect(() => {
+    if (containerRef.current) {
+      setIsInModal(!!containerRef.current.closest('[role="dialog"]'));
+    }
+  }, []);
+
   const cfg: PopWorkDetailConfig = {
     ...DEFAULT_CFG,
     ...config,
@@ -880,23 +889,25 @@ export function PopWorkDetailComponent({
   const woNo = parentRow?.wo_no ? String(parentRow.wo_no) : "";
 
   return (
-    <div className="flex h-full flex-col rounded-2xl overflow-hidden" style={{ backgroundColor: DESIGN.bg.card }}>
-      {/* ── 모달 헤더: 글자 크게 ── */}
-      <div
-        className="flex shrink-0 items-center justify-between border-b border-gray-100 px-6"
-        style={{ height: `${DESIGN.header.height}px` }}
-      >
-        <div className="flex items-center gap-4">
-          <h2 className="font-bold tracking-tight text-gray-900" style={{ fontSize: 20 }}>작업 상세</h2>
-          {woNo && <span className="font-mono text-gray-400" style={{ fontSize: 14 }}>{woNo}</span>}
-        </div>
-        <button
-          className="flex h-10 w-10 items-center justify-center rounded-xl text-gray-400 transition-colors hover:bg-gray-100 hover:text-gray-600"
-          onClick={() => publish("close_modal", {})}
+    <div ref={containerRef} className="flex h-full flex-col rounded-2xl overflow-hidden" style={{ backgroundColor: DESIGN.bg.card }}>
+      {/* ── 내부 헤더: 모달이 아닐 때만 표시 (모달은 Dialog 자체 헤더 사용) ── */}
+      {!isInModal && (
+        <div
+          className="flex shrink-0 items-center justify-between border-b border-gray-100 px-6"
+          style={{ height: `${DESIGN.header.height}px` }}
         >
-          <X className="h-5 w-5" />
-        </button>
-      </div>
+          <div className="flex items-center gap-4">
+            <h2 className="font-bold tracking-tight text-gray-900" style={{ fontSize: 20 }}>작업 상세</h2>
+            {woNo && <span className="font-mono text-gray-400" style={{ fontSize: 14 }}>{woNo}</span>}
+          </div>
+          <button
+            className="flex h-10 w-10 items-center justify-center rounded-xl text-gray-400 transition-colors hover:bg-gray-100 hover:text-gray-600"
+            onClick={() => publish("__pop_modal_close__", {})}
+          >
+            <X className="h-5 w-5" />
+          </button>
+        </div>
+      )}
 
       {/* ── 정보바: 미니멀 다크 (고정) ── */}
       {cfg.infoBar.enabled && (