diff --git a/app/modules/cafe24/templates/cafe24/bulk.html b/app/modules/cafe24/templates/cafe24/bulk.html
index 34feefe..d9a79dd 100644
--- a/app/modules/cafe24/templates/cafe24/bulk.html
+++ b/app/modules/cafe24/templates/cafe24/bulk.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/cafe24.css?v=20260814m" />
+<link rel="stylesheet" href="/static/cafe24.css?v=20260814n" />
 {% endblock %}
 
 {% block content %}
diff --git a/app/modules/cafe24/templates/cafe24/products.html b/app/modules/cafe24/templates/cafe24/products.html
index 5beb313..9ac32cb 100644
--- a/app/modules/cafe24/templates/cafe24/products.html
+++ b/app/modules/cafe24/templates/cafe24/products.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/cafe24.css?v=20260814m" />
+<link rel="stylesheet" href="/static/cafe24.css?v=20260814n" />
 {% endblock %}
 
 {% block content %}
diff --git a/app/modules/cafe24/templates/cafe24/schedules.html b/app/modules/cafe24/templates/cafe24/schedules.html
index 3d21c89..6cfa682 100644
--- a/app/modules/cafe24/templates/cafe24/schedules.html
+++ b/app/modules/cafe24/templates/cafe24/schedules.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/cafe24.css?v=20260814m" />
+<link rel="stylesheet" href="/static/cafe24.css?v=20260814n" />
 {% endblock %}
 
 {% block content %}
diff --git a/app/modules/cafe24/templates/cafe24/system.html b/app/modules/cafe24/templates/cafe24/system.html
index 5e342bc..1d28385 100644
--- a/app/modules/cafe24/templates/cafe24/system.html
+++ b/app/modules/cafe24/templates/cafe24/system.html
@@ -1,7 +1,7 @@
 {% extends "erp_base.html" %}
 
 {% block head_extra %}
-<link rel="stylesheet" href="/static/cafe24.css?v=20260814m" />
+<link rel="stylesheet" href="/static/cafe24.css?v=20260814n" />
 {% endblock %}
 
 {% block content %}
diff --git a/app/static/cafe24.css b/app/static/cafe24.css
index c89fa42..f9441a8 100644
--- a/app/static/cafe24.css
+++ b/app/static/cafe24.css
@@ -370,9 +370,16 @@
   border-color: var(--color-rich-black, #0a0a0a);
 }
 
-/* 선택 영역이 보이게 (글자는 투명이므로 배경만 남는다) */
+/* 선택 영역은 **반투명**이어야 한다.
+   textarea 의 글자는 투명이고 실제 글자는 아래 <pre> 가 그린다. 선택 배경은
+   textarea(위층)가 칠하므로 불투명하면 아래 글자를 덮어 "선택하면 글자가 사라지는"
+   현상이 생긴다. 알파를 줘서 색칠된 글자가 비쳐 보이게 한다. */
 .cf24-code-input::selection {
-  background: #b3d4fc;
+  background: rgba(51, 122, 226, 0.28);
+}
+
+.cf24-code-input::-moz-selection {
+  background: rgba(51, 122, 226, 0.28);
 }
 
 /* 토큰 색 — GitHub 라이트 계열 */