diff --git a/app/modules/cupang/templates/cupang/box_calc.html b/app/modules/cupang/templates/cupang/box_calc.html
index 25ee209..4ffaa91 100644
--- a/app/modules/cupang/templates/cupang/box_calc.html
+++ b/app/modules/cupang/templates/cupang/box_calc.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903l" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903m" />{% endblock %}
 
 {% block content %}
 <section class="cpg">
diff --git a/app/modules/cupang/templates/cupang/box_rules.html b/app/modules/cupang/templates/cupang/box_rules.html
index 4c0577b..e5cbb1a 100644
--- a/app/modules/cupang/templates/cupang/box_rules.html
+++ b/app/modules/cupang/templates/cupang/box_rules.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903l" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903m" />{% endblock %}
 
 {% block content %}
 <section class="cpg">
diff --git a/app/modules/cupang/templates/cupang/index.html b/app/modules/cupang/templates/cupang/index.html
index a45b9c2..223ab38 100644
--- a/app/modules/cupang/templates/cupang/index.html
+++ b/app/modules/cupang/templates/cupang/index.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903l" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903m" />{% endblock %}
 
 {% block content %}
 <section class="cpg">
diff --git a/app/modules/cupang/templates/cupang/products.html b/app/modules/cupang/templates/cupang/products.html
index 43cf2cd..9e55762 100644
--- a/app/modules/cupang/templates/cupang/products.html
+++ b/app/modules/cupang/templates/cupang/products.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903l" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903m" />{% endblock %}
 
 {% block content %}
 <section class="cpg">
diff --git a/app/modules/cupang/templates/cupang/view.html b/app/modules/cupang/templates/cupang/view.html
index 639d2dd..5d6c66a 100644
--- a/app/modules/cupang/templates/cupang/view.html
+++ b/app/modules/cupang/templates/cupang/view.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903l" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/cupang.css?v=20260903m" />{% endblock %}
 
 {% block content %}
 {# 출고 묶음 보기 — 상자 계산 화면과 같은 3열 구성. 읽기 전용(수정 없음). #}
diff --git a/app/static/cupang.css b/app/static/cupang.css
index 2bc6cb6..bb4c1fb 100644
--- a/app/static/cupang.css
+++ b/app/static/cupang.css
@@ -1125,6 +1125,9 @@ body.cpg-dragging { cursor: grabbing; user-select: none; }
 .cpg-mcal-cell {
   position: relative;
   display: flex; flex-direction: column; align-items: center; gap: 4px;
+  /* 이 프로젝트엔 전역 border-box 가 없다. height:100% + padding 이 행 높이를
+     넘어 칸이 겹치던 문제를 막으려면 여기서 box-sizing 을 지정해야 한다. */
+  box-sizing: border-box;
   height: 100%; min-height: 0; min-width: 0; padding: 6px 4px 7px;
   justify-content: flex-start;
   border: 1px solid var(--color-subtle-ash);