diff --git a/app/modules/vacation/templates/vacation/detail.html b/app/modules/vacation/templates/vacation/detail.html
index e5e7860..dd6b3db 100644
--- a/app/modules/vacation/templates/vacation/detail.html
+++ b/app/modules/vacation/templates/vacation/detail.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530b" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530c" />{% endblock %}
 
 {% block content %}
 <section class="vac">
diff --git a/app/modules/vacation/templates/vacation/form.html b/app/modules/vacation/templates/vacation/form.html
index ddd15e9..3e9e096 100644
--- a/app/modules/vacation/templates/vacation/form.html
+++ b/app/modules/vacation/templates/vacation/form.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530b" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530c" />{% endblock %}
 
 {% block content %}
 <section class="vac">
@@ -68,4 +68,4 @@
 </section>
 {% endblock %}
 
-{% block scripts %}<script src="/static/vacation.js?v=20260530b" defer></script>{% endblock %}
+{% block scripts %}<script src="/static/vacation.js?v=20260530c" defer></script>{% endblock %}
diff --git a/app/modules/vacation/templates/vacation/index.html b/app/modules/vacation/templates/vacation/index.html
index 0f6ca15..142da20 100644
--- a/app/modules/vacation/templates/vacation/index.html
+++ b/app/modules/vacation/templates/vacation/index.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530b" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530c" />{% endblock %}
 
 {% block content %}
 <section class="vac">
diff --git a/app/modules/vacation/templates/vacation/pending.html b/app/modules/vacation/templates/vacation/pending.html
index 5b7df35..27b56be 100644
--- a/app/modules/vacation/templates/vacation/pending.html
+++ b/app/modules/vacation/templates/vacation/pending.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530b" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530c" />{% endblock %}
 
 {% block content %}
 <section class="vac">
diff --git a/app/modules/vacation/templates/vacation/settings.html b/app/modules/vacation/templates/vacation/settings.html
index a73a2fb..272ef9a 100644
--- a/app/modules/vacation/templates/vacation/settings.html
+++ b/app/modules/vacation/templates/vacation/settings.html
@@ -1,6 +1,6 @@
 {% extends "erp_base.html" %}
 
-{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530b" />{% endblock %}
+{% block head_extra %}<link rel="stylesheet" href="/static/vacation.css?v=20260530c" />{% endblock %}
 
 {% block content %}
 <section class="vac">
diff --git a/app/static/vacation.css b/app/static/vacation.css
index 16e9059..f68fef6 100644
--- a/app/static/vacation.css
+++ b/app/static/vacation.css
@@ -14,6 +14,9 @@
 
 .vac { display: flex; flex-direction: column; gap: 16px; }
 
+/* 검정 배경 버튼 글자 흰색 강제 */
+.vac .erp-btn-primary { color: #fff !important; }
+
 /* ── 페이지 액션 + 잔여 요약 ── */
 .vac-actions {
   display: flex; align-items: center; justify-content: space-between;
@@ -71,13 +74,13 @@
   display: grid; grid-template-columns: repeat(7, minmax(0, 1fr));
 }
 .vac-day {
-  aspect-ratio: 1 / 1;            /* 정사각형 */
+  height: 125px;
   border-right: 1px solid var(--vac-ash);
   padding: 6px 8px; text-decoration: none;
   display: block; box-sizing: border-box;
 }
 .vac-day:last-child { border-right: none; }
-.vac-day-num { font-size: 16px; font-weight: 600; color: var(--vac-black); }
+.vac-day-num { font-size: 20px; font-weight: 600; color: var(--vac-black); }
 .vac-out { background: #fafafa; }
 .vac-out .vac-day-num { color: #bbb; }
 .vac-today { background: #f5f5f5; }