From fce4def9518c62fce398eb1f6bd2e9da159a8b9a Mon Sep 17 00:00:00 2001
From: bicochan <chanii8@naver.com>
Date: Thu, 1 Oct 2026 14:26:22 +0900
Subject: [PATCH] =?UTF-8?q?[as]=20feat:=20=ED=96=89=EC=A0=95=EC=A7=80?=
 =?UTF-8?q?=EC=9B=90=20=EC=88=AB=EC=9E=90=20=ED=8F=BC=20=EC=86=8C=EC=88=AB?=
 =?UTF-8?q?=EC=A0=90=20=EC=9E=90=EB=A6=AC=20=EC=A0=9C=ED=95=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .gitignore                                    |  1 +
 .../entities/cnstp/model/cnstp-interface.ts   | 12 ++++
 .../lib/configs/cnstp-config.ts               | 12 ++++
 .../model/cnstp/cnstp-se-grid-types.ts        |  2 +
 .../ui/cnstp-code-tab-panel.tsx               |  2 +
 .../pages/code-management/ui/cnstp-se-row.tsx | 31 ++++++++-
 .../sections/biz-cst-matrix-form-section.tsx  |  6 +-
 .../ui/sections/outline-form-section.tsx      | 19 ++++--
 .../ui/sections/tmplnt-form-section.tsx       | 35 ++++++----
 apps/as/src/widgets/pbadms-sprt/index.ts      |  8 ++-
 .../lib/business-cost-form-utils.ts           |  9 ++-
 .../lib/business-scale-form-utils.ts          | 10 +++
 .../widgets/pbadms-sprt/lib/format-utils.ts   | 12 +++-
 .../ui/business-cost-form-section.tsx         | 66 ++++++++-----------
 .../ui/business-scale-form-section.tsx        | 54 ++++++---------
 15 files changed, 181 insertions(+), 98 deletions(-)

diff --git a/.gitignore b/.gitignore
index 871b209f0..6eedddd04 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@ settings.json
 .npmrc
 .cursor
 .agent
+CLAUDE.MD
 
 apps/**/tsconfig.tsbuildinfo
 packages/**/tsconfig.tsbuildinfo
diff --git a/apps/as/src/entities/cnstp/model/cnstp-interface.ts b/apps/as/src/entities/cnstp/model/cnstp-interface.ts
index eabd12f46..85ec716e5 100644
--- a/apps/as/src/entities/cnstp/model/cnstp-interface.ts
+++ b/apps/as/src/entities/cnstp/model/cnstp-interface.ts
@@ -14,6 +14,8 @@ export interface CnstpSeMngResponseDto {
   cnstpSeCdNm: string;
   upCnstpCd?: string;
   cdLvNo: number;
+  numYn: string;
+  dcptUnitCnt: number;
   useYn: string;
   expln?: string;
   sortSeq?: number;
@@ -41,6 +43,8 @@ export interface CnstpSeMngSaveRequestDto {
   useYn?: string;
   expln?: string;
   sortSeq?: number;
+  numYn?: string;
+  dcptUnitCnt?: number;
 }
 
 /** PUT /{cnstpSeCd} 요청 (mode는 서비스에서 U로 설정) */
@@ -51,6 +55,8 @@ export interface CnstpSeMngPutRequestDto {
   cdLvNo?: number;
   useYn?: string;
   expln?: string;
+  numYn?: string;
+  dcptUnitCnt?: number;
 }
 
 /** 백엔드 CnstpSeMngTreeDto */
@@ -60,8 +66,11 @@ export interface CnstpSeMngTreeDto {
   cnstpSeCdNm: string;
   upCnstpCd?: string;
   useYn: string;
+  numYn: string;
+  dcptUnitCnt?: number;
   treeLevel: number;
   treePath: string;
+  sortPath: string;
 }
 
 /** 백엔드 BizSclTreeDto */
@@ -70,8 +79,11 @@ export interface BizSclTreeDto {
   cnstpSeCd: string;
   cnstpSeCdNm: string;
   useYn: string;
+  numYn: string;
+  dcptUnitCnt?: number;
   treeLevel: number;
   treePath: string;
+  sortPath: string;
   bscPlanQty?: number;
   bgtRfltQty?: number;
   tstmDesignQty?: number;
diff --git a/apps/as/src/pages/code-management/lib/configs/cnstp-config.ts b/apps/as/src/pages/code-management/lib/configs/cnstp-config.ts
index 26bcc8000..5e11dc252 100644
--- a/apps/as/src/pages/code-management/lib/configs/cnstp-config.ts
+++ b/apps/as/src/pages/code-management/lib/configs/cnstp-config.ts
@@ -21,6 +21,8 @@ const buildSavePayload = createSavePayloadBuilder<CnstpSeRow, CnstpSeMngSaveRequ
     useYn: row.useYn,
     expln: row.expln?.trim() || undefined,
     sortSeq: row.sortSeq,
+    numYn: row.numYn,
+    dcptUnitCnt: row.dcptUnitCnt,
   }),
   toCreateDto: (row) => ({
     mode: CNSTP_SE_SAVE_MODE.CREATE,
@@ -31,6 +33,8 @@ const buildSavePayload = createSavePayloadBuilder<CnstpSeRow, CnstpSeMngSaveRequ
     useYn: row.useYn,
     expln: row.expln?.trim() || undefined,
     sortSeq: row.sortSeq,
+    numYn: row.numYn,
+    dcptUnitCnt: row.dcptUnitCnt,
   }),
   toUpdateDto: (row) => ({
     mode: CNSTP_SE_SAVE_MODE.UPDATE,
@@ -41,6 +45,8 @@ const buildSavePayload = createSavePayloadBuilder<CnstpSeRow, CnstpSeMngSaveRequ
     useYn: row.useYn,
     expln: row.expln?.trim() || undefined,
     sortSeq: row.sortSeq,
+    numYn: row.numYn,
+    dcptUnitCnt: row.dcptUnitCnt,
   }),
 });
 
@@ -62,6 +68,8 @@ export const cnstpGridConfig: SeGridConfig<
     cnstpSeCd: "",
     cnstpSeCdNm: "",
     expln: "",
+    numYn: "Y",
+    dcptUnitCnt: 0,
     useYn: "Y",
   }),
   applyDraftPatch: (draft, patch) => ({
@@ -69,6 +77,8 @@ export const cnstpGridConfig: SeGridConfig<
     ...(patch.cnstpSeCd !== undefined ? { cnstpSeCd: patch.cnstpSeCd } : {}),
     ...(patch.cnstpSeCdNm !== undefined ? { cnstpSeCdNm: patch.cnstpSeCdNm ?? "" } : {}),
     ...(patch.expln !== undefined ? { expln: patch.expln ?? "" } : {}),
+    ...(patch.numYn !== undefined ? { numYn: patch.numYn } : {}),
+    ...(patch.dcptUnitCnt !== undefined ? { dcptUnitCnt: patch.dcptUnitCnt } : {}),
     ...(patch.useYn !== undefined ? { useYn: patch.useYn } : {}),
     ...(patch.sortSeq !== undefined ? { sortSeq: patch.sortSeq } : {}),
   }),
@@ -77,6 +87,8 @@ export const cnstpGridConfig: SeGridConfig<
     cnstpSeCd: draft.cnstpSeCd,
     cnstpSeCdNm: draft.cnstpSeCdNm,
     expln: draft.expln,
+    numYn: draft.numYn,
+    dcptUnitCnt: draft.dcptUnitCnt,
     useYn: draft.useYn,
     cdLvNo: draft.cdLvNo,
     upCnstpCd: parentCode,
diff --git a/apps/as/src/pages/code-management/model/cnstp/cnstp-se-grid-types.ts b/apps/as/src/pages/code-management/model/cnstp/cnstp-se-grid-types.ts
index 9c2d37c5d..ebf1f01a0 100644
--- a/apps/as/src/pages/code-management/model/cnstp/cnstp-se-grid-types.ts
+++ b/apps/as/src/pages/code-management/model/cnstp/cnstp-se-grid-types.ts
@@ -13,6 +13,8 @@ export interface CnstpSeDraft {
   cnstpSeCd: string;
   cnstpSeCdNm: string;
   expln: string;
+  numYn: string;
+  dcptUnitCnt: number;
   useYn: string;
   sortSeq?: number;
 }
diff --git a/apps/as/src/pages/code-management/ui/cnstp-code-tab-panel.tsx b/apps/as/src/pages/code-management/ui/cnstp-code-tab-panel.tsx
index 2db182456..b915b10fb 100644
--- a/apps/as/src/pages/code-management/ui/cnstp-code-tab-panel.tsx
+++ b/apps/as/src/pages/code-management/ui/cnstp-code-tab-panel.tsx
@@ -118,6 +118,8 @@ function CnstpCodeTabPanel() {
                 <TableHead>코드</TableHead>
                 <TableHead>코드명</TableHead>
                 <TableHead>설명</TableHead>
+                <TableHead>숫자 여부</TableHead>
+                <TableHead>소숫점 단위</TableHead>
                 <TableHead>사용 여부</TableHead>
                 <TableHead>정렬순서</TableHead>
                 <TableHead>구분</TableHead>
diff --git a/apps/as/src/pages/code-management/ui/cnstp-se-row.tsx b/apps/as/src/pages/code-management/ui/cnstp-se-row.tsx
index 299894821..85c69a3d1 100644
--- a/apps/as/src/pages/code-management/ui/cnstp-se-row.tsx
+++ b/apps/as/src/pages/code-management/ui/cnstp-se-row.tsx
@@ -62,6 +62,33 @@ function CnstpSeRowComponent({ row, depth, onChange, onAddChild, onDelete }: Cns
           maxLength={1000}
         />
       </TableCell>
+      <TableCell align="center">
+        <RadioGroup
+          value={row.numYn === "N" ? "N" : "Y"}
+          onValueChange={(v) => onChange({ numYn: v })}
+          className="flex justify-center gap-4"
+        >
+          <div className="flex items-center gap-2">
+            <RadioGroupItem value="Y" id={`${row.rowKey}-num-y`} />
+            <Label htmlFor={`${row.rowKey}-use-y`}>예</Label>
+          </div>
+          <div className="flex items-center gap-2">
+            <RadioGroupItem value="N" id={`${row.rowKey}-num-n`} />
+            <Label htmlFor={`${row.rowKey}-use-n`}>아니오</Label>
+          </div>
+        </RadioGroup>
+      </TableCell>
+      <TableCell align="center">
+        <Input
+          type="number"
+          min={0}
+          value={row.dcptUnitCnt ?? ""}
+          onChange={(e) =>
+            onChange({ dcptUnitCnt: e.target.value ? Number(e.target.value) : undefined })
+          }
+          className="w-20"
+        />
+      </TableCell>
       <TableCell align="center">
         <RadioGroup
           value={row.useYn === "N" ? "N" : "Y"}
@@ -89,7 +116,9 @@ function CnstpSeRowComponent({ row, depth, onChange, onAddChild, onDelete }: Cns
           className="w-20"
         />
       </TableCell>
-      <TableCell align="center">{levelLabel}</TableCell>
+      <TableCell align="center" className="whitespace-nowrap">
+        {levelLabel}
+      </TableCell>
       <TableCell align="center">
         <div className="flex justify-center gap-2">
           <Button
diff --git a/apps/as/src/pages/sewer-bsc-plan/ui/sections/biz-cst-matrix-form-section.tsx b/apps/as/src/pages/sewer-bsc-plan/ui/sections/biz-cst-matrix-form-section.tsx
index efbdfc462..be8c959e3 100644
--- a/apps/as/src/pages/sewer-bsc-plan/ui/sections/biz-cst-matrix-form-section.tsx
+++ b/apps/as/src/pages/sewer-bsc-plan/ui/sections/biz-cst-matrix-form-section.tsx
@@ -6,7 +6,7 @@ import { useFormContext, useWatch } from "react-hook-form";
 import { SectionCollapsible } from "@/shared/ui";
 import { Field } from "@/shared/ui/field";
 import { useAcntgSeMngTree } from "@/entities/acntg";
-import { buildAcntgCostItems } from "@/widgets/pbadms-sprt";
+import { buildAcntgCostItems, truncateDecimals } from "@/widgets/pbadms-sprt";
 import {
   Input,
   Skeleton,
@@ -50,7 +50,8 @@ function BizCstMatrixFormSection() {
   ];
 
   function handleChange(acntgSeCd: string, planStpNo: number, value: string) {
-    const numValue = Number(value) || 0;
+    const normalized = truncateDecimals(value, 3);
+    const numValue = Number(normalized.replace(/,/g, "")) || 0;
     const next = recalculateBizCstMatrix(
       setAmt(getValues("bizCstList"), acntgSeCd, planStpNo, numValue),
       costItems,
@@ -113,6 +114,7 @@ function BizCstMatrixFormSection() {
                       <Field>
                         <Input
                           type="number"
+                          step={0.001}
                           value={getAmt(bizCstList, item.code, step.planStpNo) || ""}
                           onChange={(e) => handleChange(item.code, step.planStpNo, e.target.value)}
                           readOnly={item.readonly}
diff --git a/apps/as/src/pages/sewer-bsc-plan/ui/sections/outline-form-section.tsx b/apps/as/src/pages/sewer-bsc-plan/ui/sections/outline-form-section.tsx
index c6dcdfc2f..d1855d1a1 100644
--- a/apps/as/src/pages/sewer-bsc-plan/ui/sections/outline-form-section.tsx
+++ b/apps/as/src/pages/sewer-bsc-plan/ui/sections/outline-form-section.tsx
@@ -6,6 +6,7 @@ import dynamic from "next/dynamic";
 
 import { SectionCollapsible } from "@/shared/ui";
 import { Field } from "@/shared/ui/field";
+import { truncateDecimals } from "@/widgets/pbadms-sprt";
 import {
   Button,
   Input,
@@ -28,9 +29,9 @@ const PreviousPlanLookupDialog = dynamic(
 );
 
 const OTLN_ROWS = [
-  { key: "sewerPlanPpltnCnt" as const, label: "계획인구" },
-  { key: "sewerPrcsPpltnCnt" as const, label: "처리인구" },
-  { key: "sewerPsplyRt" as const, label: "하수도보급율" },
+  { key: "sewerPlanPpltnCnt" as const, label: "계획인구", decimals: 0 },
+  { key: "sewerPrcsPpltnCnt" as const, label: "처리인구", decimals: 0 },
+  { key: "sewerPsplyRt" as const, label: "하수도보급율", step: 0.1, decimals: 1 },
 ];
 
 function OutlineFormSection() {
@@ -58,8 +59,10 @@ function OutlineFormSection() {
     planStpNo: number,
     fieldKey: (typeof OTLN_ROWS)[number]["key"],
     value: string,
+    decimals?: number,
   ) {
-    const numValue = Number(value.replace(/,/g, "")) || 0;
+    const normalized = decimals === undefined ? value : truncateDecimals(value, decimals);
+    const numValue = Number(normalized.replace(/,/g, "")) || 0;
     const draft = [...getValues("sewerBscPlanOtlnList")];
     const index = draft.findIndex((item) => item.planStpNo === planStpNo);
     if (index < 0) return;
@@ -104,11 +107,13 @@ function OutlineFormSection() {
                   <TableCell key={planStpNo}>
                     <Field>
                       <Input
-                        type="text"
-                        inputMode="decimal"
+                        type="number"
+                        step={row.step}
                         className="text-right"
                         value={item?.[row.key] ?? ""}
-                        onChange={(e) => handleChange(planStpNo, row.key, e.target.value)}
+                        onChange={(e) =>
+                          handleChange(planStpNo, row.key, e.target.value, row.decimals)
+                        }
                       />
                     </Field>
                   </TableCell>
diff --git a/apps/as/src/pages/sewer-bsc-plan/ui/sections/tmplnt-form-section.tsx b/apps/as/src/pages/sewer-bsc-plan/ui/sections/tmplnt-form-section.tsx
index 51f59d559..62361b439 100644
--- a/apps/as/src/pages/sewer-bsc-plan/ui/sections/tmplnt-form-section.tsx
+++ b/apps/as/src/pages/sewer-bsc-plan/ui/sections/tmplnt-form-section.tsx
@@ -12,6 +12,7 @@ import { Field } from "@/shared/ui/field";
 import { attachService } from "@/entities/attach";
 import { useFacilityList } from "@/entities/bns-if";
 import { useNowDmgMtncGnsvy } from "@/entities/dc";
+import { truncateDecimals } from "@/widgets/pbadms-sprt";
 import {
   Button,
   Checkbox,
@@ -57,15 +58,17 @@ interface UploadedTmplntFile {
 const TMPLNT_ATCH_ACCEPT = ".pdf,.png,.jpg,.jpeg";
 const TMPLNT_ATCH_FORMAT_LABEL = ".pdf, .png, .jpg, .jpeg";
 
-const TMPLNT_FIELD_ROWS: { key: TmplntFieldKey; label: string }[] = [
-  { key: "prcsZoneArea", label: "처리구역면적(km²)" },
+const TMPLNT_DECIMAL_PLACES = 3;
+
+const TMPLNT_FIELD_ROWS: { key: TmplntFieldKey; label: string; decimals?: number }[] = [
+  { key: "prcsZoneArea", label: "처리구역면적(km²)", decimals: TMPLNT_DECIMAL_PLACES },
   { key: "swtrmtPpltnCnt", label: "하수처리인구(명)" },
   { key: "planSwqty", label: "계획하수량(㎥/일)" },
   { key: "fcltCpct", label: "시설용량(㎥/일)" },
-  { key: "sprsysDrtwPplLen", label: "분류식 오수(km)" },
-  { key: "sprsysExlnPplLen", label: "분류식 우수(km)" },
-  { key: "cbsysPplLen", label: "합류식(km)" },
-  { key: "icptgPplLen", label: "차집관로(km)" },
+  { key: "sprsysDrtwPplLen", label: "분류식 오수(km)", decimals: TMPLNT_DECIMAL_PLACES },
+  { key: "sprsysExlnPplLen", label: "분류식 우수(km)", decimals: TMPLNT_DECIMAL_PLACES },
+  { key: "cbsysPplLen", label: "합류식(km)", decimals: TMPLNT_DECIMAL_PLACES },
+  { key: "icptgPplLen", label: "차집관로(km)", decimals: TMPLNT_DECIMAL_PLACES },
   { key: "drgCnt", label: "배수설비(개소)" },
   { key: "drtwRlyPumpCnt", label: "오수 중계 펌프(개소)" },
   { key: "drtwPumpCnt", label: "오수 일반 펌프(개소)" },
@@ -76,12 +79,14 @@ interface TmplntDtlInputProps {
   facilityIndex: number;
   planStpNo: number;
   fieldKey: TmplntFieldKey;
+  decimals?: number;
 }
 
-function TmplntDtlInput({ facilityIndex, planStpNo, fieldKey }: TmplntDtlInputProps) {
+function TmplntDtlInput({ facilityIndex, planStpNo, fieldKey, decimals }: TmplntDtlInputProps) {
   const { control } = useFormContext<SewerBscPlanRegistFormData>();
   const fieldName =
     `sewerBscPlanTmplntList.${facilityIndex}.sewerBscPlanTmplntDtlList.${planStpNo}.${fieldKey}` as const;
+  const hasDecimals = decimals !== undefined;
 
   return (
     <Controller
@@ -90,13 +95,15 @@ function TmplntDtlInput({ facilityIndex, planStpNo, fieldKey }: TmplntDtlInputPr
       render={({ field }) => (
         <Field>
           <Input
-            type="text"
+            type="number"
             inputMode="decimal"
+            step={hasDecimals ? Number(`1e-${decimals}`) : undefined}
             className="text-right"
             value={field.value ?? ""}
             onChange={(e) => {
-              const numValue = Number(e.target.value.replace(/,/g, "")) || 0;
-              field.onChange(numValue);
+              const value = e.target.value.replace(/,/g, "");
+              const normalized = hasDecimals ? truncateDecimals(value, decimals) : value;
+              field.onChange(Number(normalized) || 0);
             }}
           />
         </Field>
@@ -193,7 +200,12 @@ function TmplntFacilityMatrix({
               </TableCell>
             ))}
             <TableCell key={`current-${row.key}`}>
-              <TmplntDtlInput facilityIndex={facilityIndex} planStpNo={0} fieldKey={row.key} />
+              <TmplntDtlInput
+                facilityIndex={facilityIndex}
+                planStpNo={0}
+                fieldKey={row.key}
+                decimals={row.decimals}
+              />
             </TableCell>
             {changeStepHeaders.map((step) => (
               <TableCell key={`change-${row.key}-${step.planStpNo}`}>
@@ -201,6 +213,7 @@ function TmplntFacilityMatrix({
                   facilityIndex={facilityIndex}
                   planStpNo={step.planStpNo}
                   fieldKey={row.key}
+                  decimals={row.decimals}
                 />
               </TableCell>
             ))}
diff --git a/apps/as/src/widgets/pbadms-sprt/index.ts b/apps/as/src/widgets/pbadms-sprt/index.ts
index 0dd7d8157..c59b99732 100644
--- a/apps/as/src/widgets/pbadms-sprt/index.ts
+++ b/apps/as/src/widgets/pbadms-sprt/index.ts
@@ -30,7 +30,13 @@ export {
   toFnrsSharSaveList,
   validateBizCstSharBalance,
 } from "./lib/fnrs-shar-form-utils";
-export { calcDiffPercent, fmtNumber, indentPx, roundAmount } from "./lib/format-utils";
+export {
+  calcDiffPercent,
+  fmtNumber,
+  indentPx,
+  roundAmount,
+  truncateDecimals,
+} from "./lib/format-utils";
 export { AttachmentsFormSection } from "./ui/attachments-form-section";
 export { AttachmentsViewSection } from "./ui/attachments-view-section";
 export { BusinessCostFormSection } from "./ui/business-cost-form-section";
diff --git a/apps/as/src/widgets/pbadms-sprt/lib/business-cost-form-utils.ts b/apps/as/src/widgets/pbadms-sprt/lib/business-cost-form-utils.ts
index b6d415675..1881cb691 100644
--- a/apps/as/src/widgets/pbadms-sprt/lib/business-cost-form-utils.ts
+++ b/apps/as/src/widgets/pbadms-sprt/lib/business-cost-form-utils.ts
@@ -2,6 +2,9 @@ import type { AcntgSeMngTreeDto } from "@/entities/acntg";
 
 import { roundAmount } from "./format-utils";
 
+/** 세부별 총사업비 소수점 자릿수 (단위: 백만원) */
+export const COST_DECIMAL_PLACES = 3;
+
 export interface CostItemDef {
   code: string;
   label: string;
@@ -32,9 +35,9 @@ function sumChildAmounts(list: BizCstListItem[], childCodes: string[]) {
   });
 
   return {
-    bscPlanAmt: roundAmount(bscPlanAmt),
-    bgtRfltAmt: roundAmount(bgtRfltAmt),
-    tstmDesignAmt: roundAmount(tstmDesignAmt),
+    bscPlanAmt: roundAmount(bscPlanAmt, COST_DECIMAL_PLACES),
+    bgtRfltAmt: roundAmount(bgtRfltAmt, COST_DECIMAL_PLACES),
+    tstmDesignAmt: roundAmount(tstmDesignAmt, COST_DECIMAL_PLACES),
   };
 }
 
diff --git a/apps/as/src/widgets/pbadms-sprt/lib/business-scale-form-utils.ts b/apps/as/src/widgets/pbadms-sprt/lib/business-scale-form-utils.ts
index d50711bb9..a94e8d919 100644
--- a/apps/as/src/widgets/pbadms-sprt/lib/business-scale-form-utils.ts
+++ b/apps/as/src/widgets/pbadms-sprt/lib/business-scale-form-utils.ts
@@ -6,10 +6,17 @@ export interface ScaleItemDef {
   code: string;
   label: string;
   level: number;
+  numYn: boolean;
+  step: number;
+  dcptUnitCnt: number;
   readonly?: boolean;
   children?: string[];
 }
 
+function toStep(dcptUnitCnt?: number) {
+  return dcptUnitCnt && dcptUnitCnt > 0 ? Number(`1e-${dcptUnitCnt}`) : 1;
+}
+
 export interface BzScaleListItem {
   cnstpSeCd: string;
   bscPl: number;
@@ -65,6 +72,9 @@ export function buildCnstpScaleItems(tree: CnstpSeMngTreeDto[]): ScaleItemDef[]
         code: node.cnstpSeCd,
         label: node.cnstpSeCdNm,
         level: node.treeLevel,
+        numYn: node.numYn !== "N",
+        step: toStep(node.dcptUnitCnt),
+        dcptUnitCnt: node.dcptUnitCnt ?? 0,
         readonly: Boolean(children && children.length > 0),
         children,
       };
diff --git a/apps/as/src/widgets/pbadms-sprt/lib/format-utils.ts b/apps/as/src/widgets/pbadms-sprt/lib/format-utils.ts
index 084674eb0..81c0c478b 100644
--- a/apps/as/src/widgets/pbadms-sprt/lib/format-utils.ts
+++ b/apps/as/src/widgets/pbadms-sprt/lib/format-utils.ts
@@ -20,11 +20,19 @@ export function indentPx(indNm: string | undefined): number {
 
 const AMOUNT_DECIMAL_PLACES = 2;
 
-export function roundAmount(value: number): number {
-  const factor = 10 ** AMOUNT_DECIMAL_PLACES;
+export function roundAmount(value: number, decimals: number = AMOUNT_DECIMAL_PLACES): number {
+  const factor = 10 ** decimals;
   return Math.round((value + Number.EPSILON) * factor) / factor;
 }
 
+/** 입력 문자열의 소수부를 decimals 자리까지 잘라낸다 */
+export function truncateDecimals(value: string, decimals: number): string {
+  const dotIndex = value.indexOf(".");
+  if (dotIndex < 0) return value;
+  if (decimals <= 0) return value.slice(0, dotIndex);
+  return value.slice(0, dotIndex + 1 + decimals);
+}
+
 export function calcDiffPercent(diff: number, baseline: number): string {
   if (baseline === 0) return "-";
   return `${Math.round((diff / baseline) * 100)}%`;
diff --git a/apps/as/src/widgets/pbadms-sprt/ui/business-cost-form-section.tsx b/apps/as/src/widgets/pbadms-sprt/ui/business-cost-form-section.tsx
index 9bc5ce92d..42268c710 100644
--- a/apps/as/src/widgets/pbadms-sprt/ui/business-cost-form-section.tsx
+++ b/apps/as/src/widgets/pbadms-sprt/ui/business-cost-form-section.tsx
@@ -17,8 +17,12 @@ import {
   TableRow,
 } from "@common/components";
 
-import { buildAcntgCostItems, recalculateBizCstTotals } from "../lib/business-cost-form-utils";
-import { calcDiffPercent } from "../lib/format-utils";
+import {
+  buildAcntgCostItems,
+  COST_DECIMAL_PLACES,
+  recalculateBizCstTotals,
+} from "../lib/business-cost-form-utils";
+import { calcDiffPercent, roundAmount, truncateDecimals } from "../lib/format-utils";
 
 interface BusinessCostFormData {
   bizCstList: Array<{
@@ -31,6 +35,10 @@ interface BusinessCostFormData {
 
 type CostFieldKey = "bscPlanAmt" | "bgtRfltAmt" | "tstmDesignAmt";
 
+/** 컬럼 순서: 예산반영(A), 표준사업비(B), 금회설계시(C) */
+const COST_FIELDS: CostFieldKey[] = ["bgtRfltAmt", "bscPlanAmt", "tstmDesignAmt"];
+const COST_STEP = 0.001;
+
 function isSameBizCstCodes(
   current: BusinessCostFormData["bizCstList"],
   next: BusinessCostFormData["bizCstList"],
@@ -71,7 +79,7 @@ function BusinessCostFormSection() {
   }, [costItems, getValues, setValue]);
 
   function handleCostChange(index: number, fieldKey: CostFieldKey, value: string) {
-    const numValue = Number(value) || 0;
+    const numValue = Number(truncateDecimals(value, COST_DECIMAL_PLACES)) || 0;
     const draft = [...getValues("bizCstList")];
     draft[index] = { ...draft[index], [fieldKey]: numValue };
     const next = recalculateBizCstTotals(draft, costItems);
@@ -114,7 +122,10 @@ function BusinessCostFormSection() {
               const data = bizCstList[idx];
               if (!data) return null;
 
-              const diff = (data.tstmDesignAmt || 0) - (data.bgtRfltAmt || 0);
+              const diff = roundAmount(
+                (data.tstmDesignAmt || 0) - (data.bgtRfltAmt || 0),
+                COST_DECIMAL_PLACES,
+              );
               const paddingLeft = `${item.level * 1.6}rem`;
               const showSubIcon = item.level >= 2;
 
@@ -128,39 +139,20 @@ function BusinessCostFormSection() {
                       {item.label}
                     </div>
                   </TableHead>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.bgtRfltAmt ?? ""}
-                        onChange={(e) => handleCostChange(idx, "bgtRfltAmt", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.bscPlanAmt ?? ""}
-                        onChange={(e) => handleCostChange(idx, "bscPlanAmt", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.tstmDesignAmt ?? ""}
-                        onChange={(e) => handleCostChange(idx, "tstmDesignAmt", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
+                  {COST_FIELDS.map((fieldKey) => (
+                    <TableCell key={fieldKey}>
+                      <Field>
+                        <Input
+                          type="number"
+                          step={COST_STEP}
+                          value={data[fieldKey] ?? ""}
+                          onChange={(e) => handleCostChange(idx, fieldKey, e.target.value)}
+                          readOnly={item.readonly}
+                          className={`text-right ${item.readonly ? "bg-muted" : ""}`}
+                        />
+                      </Field>
+                    </TableCell>
+                  ))}
                   <TableCell>
                     <div className="text-right">
                       {diff > 0 ? `+${diff.toLocaleString()}` : diff.toLocaleString()}
diff --git a/apps/as/src/widgets/pbadms-sprt/ui/business-scale-form-section.tsx b/apps/as/src/widgets/pbadms-sprt/ui/business-scale-form-section.tsx
index de479a0cf..4998e4a72 100644
--- a/apps/as/src/widgets/pbadms-sprt/ui/business-scale-form-section.tsx
+++ b/apps/as/src/widgets/pbadms-sprt/ui/business-scale-form-section.tsx
@@ -18,6 +18,7 @@ import {
 } from "@common/components";
 
 import { buildCnstpScaleItems, recalculateBzScaleTotals } from "../lib/business-scale-form-utils";
+import { truncateDecimals } from "../lib/format-utils";
 
 interface BusinessScaleFormData {
   bzScaleList: Array<{
@@ -31,6 +32,8 @@ interface BusinessScaleFormData {
 
 type ScaleFieldKey = "bscPl" | "budgetReflct" | "thtiDsgn";
 
+const SCALE_FIELDS: ScaleFieldKey[] = ["bscPl", "budgetReflct", "thtiDsgn"];
+
 function isSameBzScaleCodes(
   current: BusinessScaleFormData["bzScaleList"],
   next: BusinessScaleFormData["bzScaleList"],
@@ -73,7 +76,9 @@ function BusinessScaleFormSection() {
   }, [scaleItems, getValues, setValue]);
 
   function handleScaleChange(index: number, fieldKey: ScaleFieldKey, value: string) {
-    const numValue = Number(value) || 0;
+    const item = scaleItems[index];
+    const normalized = item?.numYn ? truncateDecimals(value, item.dcptUnitCnt) : value;
+    const numValue = Number(normalized) || 0;
     const draft = [...getValues("bzScaleList")];
     draft[index] = { ...draft[index], [fieldKey]: numValue };
     const next = recalculateBzScaleTotals(draft, scaleItems);
@@ -123,39 +128,20 @@ function BusinessScaleFormSection() {
                       {item.label}
                     </div>
                   </TableHead>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.bscPl ?? ""}
-                        onChange={(e) => handleScaleChange(idx, "bscPl", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.budgetReflct ?? ""}
-                        onChange={(e) => handleScaleChange(idx, "budgetReflct", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
-                  <TableCell>
-                    <Field>
-                      <Input
-                        type="number"
-                        value={data.thtiDsgn ?? ""}
-                        onChange={(e) => handleScaleChange(idx, "thtiDsgn", e.target.value)}
-                        readOnly={item.readonly}
-                        className={`text-right ${item.readonly ? "bg-muted" : ""}`}
-                      />
-                    </Field>
-                  </TableCell>
+                  {SCALE_FIELDS.map((fieldKey) => (
+                    <TableCell key={fieldKey}>
+                      <Field>
+                        <Input
+                          type={item.numYn ? "number" : "text"}
+                          step={item.numYn ? item.step : undefined}
+                          value={data[fieldKey] ?? ""}
+                          onChange={(e) => handleScaleChange(idx, fieldKey, e.target.value)}
+                          readOnly={item.readonly}
+                          className={`text-right ${item.readonly ? "bg-muted" : ""}`}
+                        />
+                      </Field>
+                    </TableCell>
+                  ))}
                   <TableCell>
                     <div className="text-right">
                       {diff > 0 ? `+${diff.toLocaleString()}` : diff.toLocaleString()}