diff --git a/src/frontend/src/components/business-composites/OrderLineEditor.vue b/src/frontend/src/components/business-composites/OrderLineEditor.vue
index a0edb7d5..f8971299 100644
--- a/src/frontend/src/components/business-composites/OrderLineEditor.vue
+++ b/src/frontend/src/components/business-composites/OrderLineEditor.vue
@@ -1,18 +1,18 @@
 <!-- Business Composite Component Layer: OrderLineEditor (WBS-COMP-4.3) -->
 <template>
-  <div class="business-order-line-editor border border-slate-300 rounded-md bg-white overflow-hidden shadow-sm flex flex-col gap-2">
+  <div class="business-order-line-editor border border-slate-300 rounded-md bg-white overflow-hidden shadow-sm flex flex-col gap-2 select-none">
     <!-- Editor Header Toolbar -->
     <div class="bg-slate-100 p-2.5 border-b border-slate-300 flex justify-between items-center text-xs">
       <div class="flex items-center gap-2 font-bold text-slate-800">
-        <span>📦 주문 품목 라인 인라인 편집기</span>
+        <span>📦 주문 품목 라인 고성능 인라인 편집기</span>
         <span class="px-2 py-0.5 rounded bg-blue-100 text-blue-800 font-mono">총 {{ lines.length }}개 라인</span>
       </div>
-      <div class="flex gap-1">
-        <button type="button" class="bg-emerald-600 hover:bg-emerald-700 text-white font-bold px-2.5 py-1 rounded transition" @click="addLine">
-          + 행 추가
+      <div class="flex gap-1.5">
+        <button type="button" class="bg-blue-600 hover:bg-blue-700 text-white font-bold px-3 py-1 rounded transition shadow-xs flex items-center gap-1" @click="addLine">
+          <span>+ 행 추가</span>
         </button>
-        <button type="button" class="bg-rose-100 hover:bg-rose-200 text-rose-800 font-bold px-2 py-1 rounded transition" @click="clearSelected">
-          선택 삭제
+        <button type="button" class="bg-rose-100 hover:bg-rose-200 text-rose-800 font-bold px-2.5 py-1 rounded transition flex items-center gap-1" @click="clearSelected">
+          <span>선택 삭제</span>
         </button>
       </div>
     </div>
@@ -28,27 +28,31 @@
             <th class="p-2 border-r text-right">수량</th>
             <th class="p-2 border-r text-right">단가 (KRW)</th>
             <th class="p-2 border-r text-right">공급가액 (KRW)</th>
+            <th class="p-2 border-r text-right">VAT (10%)</th>
             <th class="p-2 text-center w-16">작업</th>
           </tr>
         </thead>
         <tbody>
-          <tr v-for="(line, idx) in lines" :key="line.id" class="border-b hover:bg-slate-50">
+          <tr v-for="(line, idx) in lines" :key="line.id" class="border-b hover:bg-blue-50/40 transition">
             <td class="p-2 border-r text-center"><input type="checkbox" v-model="line.selected" /></td>
             <td class="p-2 border-r font-mono">
-              <input type="text" v-model="line.itemCode" class="w-full px-1.5 py-1 border rounded font-mono font-bold text-blue-700" />
+              <input type="text" v-model="line.itemCode" class="w-full px-2 py-1 border border-slate-300 rounded font-mono font-bold text-slate-900 bg-white focus:ring-1 focus:ring-blue-500 uppercase" />
             </td>
             <td class="p-2 border-r">
-              <input type="text" v-model="line.itemName" class="w-full px-1.5 py-1 border rounded" />
+              <input type="text" v-model="line.itemName" class="w-full px-2 py-1 border border-slate-300 rounded text-slate-900 font-medium bg-white focus:ring-1 focus:ring-blue-500" />
             </td>
             <td class="p-2 border-r text-right font-mono">
-              <input type="number" v-model.number="line.quantity" class="w-20 text-right px-1.5 py-1 border rounded font-mono" @input="recalculateLine(line)" />
+              <input type="number" v-model.number="line.quantity" class="w-20 text-right px-2 py-1 border border-slate-300 rounded font-mono font-bold text-slate-900 bg-white focus:ring-1 focus:ring-blue-500" @input="recalculateLine(line)" />
             </td>
             <td class="p-2 border-r text-right font-mono">
-              <input type="number" v-model.number="line.price" class="w-24 text-right px-1.5 py-1 border rounded font-mono" @input="recalculateLine(line)" />
+              <input type="number" v-model.number="line.price" class="w-28 text-right px-2 py-1 border border-slate-300 rounded font-mono font-bold text-slate-900 bg-white focus:ring-1 focus:ring-blue-500" @input="recalculateLine(line)" />
             </td>
-            <td class="p-2 border-r text-right font-mono font-bold text-slate-800">
+            <td class="p-2 border-r text-right font-mono font-bold text-slate-900">
               {{ line.amount.toLocaleString() }}
             </td>
+            <td class="p-2 border-r text-right font-mono text-slate-500">
+              {{ Math.floor(line.amount * 0.1).toLocaleString() }}
+            </td>
             <td class="p-2 text-center">
               <button type="button" class="text-rose-600 font-bold hover:underline" @click="removeLine(idx)">삭제</button>
             </td>
@@ -59,9 +63,13 @@
 
     <!-- Total Summary Strip -->
     <div class="bg-slate-50 p-2.5 border-t border-slate-300 flex justify-between items-center text-xs">
-      <span class="text-slate-500">라인 재계산: <strong class="text-emerald-700">실시간 유효성 검증 완료</strong></span>
-      <div class="font-bold text-slate-900">
-        합계 금액: <span class="text-blue-700 font-mono text-sm ml-1">{{ totalAmountSummary.toLocaleString() }} KRW</span>
+      <div class="flex items-center gap-3">
+        <span class="text-slate-600">라인 실시간 상태: <strong class="text-emerald-700">✓ 자동 연산 정합성 보장</strong></span>
+        <span class="text-slate-400">|</span>
+        <span class="text-slate-600">부가세 합계: <strong class="font-mono text-slate-800">{{ totalVatSummary.toLocaleString() }} KRW</strong></span>
+      </div>
+      <div class="font-bold text-slate-900 text-sm">
+        총 합계 금액 (VAT 포함): <span class="text-blue-700 font-mono text-base ml-1 font-extrabold">{{ totalWithVatSummary.toLocaleString() }} KRW</span>
       </div>
     </div>
   </div>
@@ -95,6 +103,14 @@ const totalAmountSummary = computed(() => {
   return lines.value.reduce((sum, item) => sum + (item.amount || 0), 0);
 });
 
+const totalVatSummary = computed(() => {
+  return Math.floor(totalAmountSummary.value * 0.1);
+});
+
+const totalWithVatSummary = computed(() => {
+  return totalAmountSummary.value + totalVatSummary.value;
+});
+
 const recalculateLine = (line: OrderLineItem) => {
   line.amount = (line.quantity || 0) * (line.price || 0);
   emit('update:lines', lines.value);
diff --git a/src/frontend/src/components/domain-fields/LotField.vue b/src/frontend/src/components/domain-fields/LotField.vue
index e3ca8ce0..86926b38 100644
--- a/src/frontend/src/components/domain-fields/LotField.vue
+++ b/src/frontend/src/components/domain-fields/LotField.vue
@@ -1,38 +1,40 @@
 <!-- Domain Field Component Layer: LotField (WBS-COMP-3.4) -->
 <template>
-  <div class="domain-lot-field flex flex-col gap-1 border border-slate-200 p-2.5 rounded-md bg-white">
+  <div class="domain-lot-field flex flex-col gap-1 w-full bg-slate-50 p-2.5 rounded-md border border-slate-300">
     <div class="flex justify-between items-center text-xs">
-      <label class="font-bold text-slate-700">
-        {{ label || '로트(LOT) 번호 및 FEFO 관리' }} <span v-if="required" class="text-red-500">*</span>
+      <label class="font-bold text-slate-800 flex items-center gap-1">
+        <span>🏷️ LOT 번호 / FEFO 유효기간</span>
+        <span v-if="required" class="text-rose-600">*</span>
       </label>
-      <span :class="['text-[10px] px-2 py-0.5 rounded font-bold font-mono', isExpired ? 'bg-rose-100 text-rose-800' : 'bg-emerald-100 text-emerald-800']">
-        {{ isExpired ? '🚨 로트 만료' : '✓ 출고 가능 (FEFO)' }}
+      <span v-if="remainingDays !== null" :class="['px-2 py-0.5 rounded text-[11px] font-bold font-mono shadow-xs', expiryStatusClass]">
+        {{ expiryStatusText }}
       </span>
     </div>
 
-    <div class="flex gap-2 mt-1">
-      <input
-        type="text"
-        :value="lotNumber"
-        placeholder="LOT-20260726-001"
-        :readonly="readonly"
-        :disabled="disabled"
-        class="flex-1 h-9 px-3 border border-slate-300 rounded font-mono text-xs text-slate-800 font-bold focus:ring-2 focus:ring-blue-500 focus:outline-none"
-        @input="handleLotInput"
-      />
-      <input
-        type="date"
-        :value="expirationDate"
-        :readonly="readonly"
-        :disabled="disabled"
-        class="h-9 px-2 border border-slate-300 rounded bg-slate-50 text-xs font-mono font-bold text-slate-700"
-        @change="handleDateChange"
-      />
-    </div>
-
-    <div class="flex justify-between items-center text-[11px] text-slate-500 mt-0.5">
-      <span>권장 출고 순위: <strong class="text-blue-700 font-mono">FEFO #1 (유효기간 상위)</strong></span>
-      <span>유효기간: <strong class="font-mono text-slate-700">{{ expirationDate || '미지정' }}</strong></span>
+    <div class="grid grid-cols-2 gap-2 mt-1">
+      <div class="flex flex-col gap-0.5">
+        <span class="text-[10px] font-bold text-slate-500">LOT 배치 번호</span>
+        <input
+          type="text"
+          :value="lotNumber"
+          placeholder="LOT-20260725-01"
+          :readonly="readonly"
+          :disabled="disabled"
+          class="h-8 px-2 border border-slate-300 rounded font-mono text-xs text-slate-900 font-bold bg-white focus:ring-2 focus:ring-blue-500 uppercase"
+          @input="handleLotInput"
+        />
+      </div>
+      <div class="flex flex-col gap-0.5">
+        <span class="text-[10px] font-bold text-slate-500">유효기간 (Expiration Date)</span>
+        <input
+          type="date"
+          :value="expirationDate"
+          :readonly="readonly"
+          :disabled="disabled"
+          class="h-8 px-2 border border-slate-300 rounded font-mono text-xs text-slate-900 font-bold bg-white focus:ring-2 focus:ring-blue-500"
+          @change="handleDateChange"
+        />
+      </div>
     </div>
   </div>
 </template>
@@ -41,7 +43,6 @@
 import { computed } from 'vue';
 
 const props = defineProps<{
-  label?: string;
   lotNumber: string;
   expirationDate: string;
   required?: boolean;
@@ -51,15 +52,31 @@ const props = defineProps<{
 
 const emit = defineEmits(['update:lotNumber', 'update:expirationDate']);
 
-const isExpired = computed(() => {
-  if (!props.expirationDate) return false;
+const remainingDays = computed(() => {
+  if (!props.expirationDate) return null;
   const exp = new Date(props.expirationDate).getTime();
   const today = new Date().getTime();
-  return exp < today;
+  const diff = Math.ceil((exp - today) / (1000 * 3600 * 24));
+  return diff;
+});
+
+const expiryStatusClass = computed(() => {
+  if (remainingDays.value === null) return 'bg-slate-100 text-slate-700';
+  if (remainingDays.value <= 0) return 'bg-rose-600 text-white animate-pulse';
+  if (remainingDays.value <= 30) return 'bg-rose-100 text-rose-800 border border-rose-300 font-bold';
+  if (remainingDays.value <= 90) return 'bg-amber-100 text-amber-800 border border-amber-300 font-bold';
+  return 'bg-emerald-100 text-emerald-800 border border-emerald-300 font-bold';
+});
+
+const expiryStatusText = computed(() => {
+  if (remainingDays.value === null) return '유효기간 미지정';
+  if (remainingDays.value <= 0) return `🚨 만료됨 (D+${Math.abs(remainingDays.value.valueOf())})`;
+  if (remainingDays.value <= 30) return `⚠️ 출하임계 (D-${remainingDays.value})`;
+  return `✓ 안전 (D-${remainingDays.value})`;
 });
 
 const handleLotInput = (e: Event) => {
-  emit('update:lotNumber', (e.target as HTMLInputElement).value);
+  emit('update:lotNumber', (e.target as HTMLInputElement).value.toUpperCase());
 };
 
 const handleDateChange = (e: Event) => {
diff --git a/src/frontend/src/components/primitives/TextInput.vue b/src/frontend/src/components/primitives/TextInput.vue
index 4f475953..5c32f553 100644
--- a/src/frontend/src/components/primitives/TextInput.vue
+++ b/src/frontend/src/components/primitives/TextInput.vue
@@ -1,6 +1,6 @@
-<!-- Primitive UI Components Layer -->
+<!-- Primitive UI Components Layer: TextInput -->
 <template>
-  <div class="primitive-input-wrapper w-full">
+  <div class="primitive-input-wrapper relative w-full flex items-center">
     <input
       :id="id"
       :type="type || 'text'"
@@ -8,9 +8,18 @@
       :placeholder="placeholder"
       :disabled="disabled"
       :readonly="readonly"
-      class="primitive-input w-full h-9 px-3 border border-slate-300 rounded text-xs text-slate-900 font-medium bg-white placeholder:text-slate-400 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 focus:outline-none disabled:bg-slate-100 disabled:text-slate-500 disabled:cursor-not-allowed readonly:bg-slate-50 readonly:text-slate-700"
+      class="primitive-input w-full h-9 pl-3 pr-8 border border-slate-300 rounded text-xs text-slate-900 font-medium bg-white placeholder:text-slate-400 focus:ring-2 focus:ring-blue-500 focus:border-blue-500 focus:outline-none disabled:bg-slate-100 disabled:text-slate-500 disabled:cursor-not-allowed readonly:bg-slate-50 readonly:text-slate-700 transition shadow-xs"
       @input="$emit('update:modelValue', ($event.target as HTMLInputElement).value)"
     />
+    <button
+      v-if="modelValue && !disabled && !readonly"
+      type="button"
+      class="absolute right-2 text-slate-400 hover:text-slate-600 text-xs font-bold w-4 h-4 rounded-full flex items-center justify-center bg-slate-100 hover:bg-slate-200"
+      title="Clear text"
+      @click="$emit('update:modelValue', '')"
+    >
+      ✕
+    </button>
   </div>
 </template>