diff --git a/src/TaxBaik.Web/Pages/Admin/Announcements/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Announcements/Index.cshtml
index d23b5b7..9508aa1 100644
--- a/src/TaxBaik.Web/Pages/Admin/Announcements/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Announcements/Index.cshtml
@@ -2,7 +2,7 @@
 @model TaxBaik.Web.Pages.Admin.Announcements.IndexModel
 @{ ViewData["Title"] = "공지사항"; }
 
-<section class="container-fluid py-4">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("Content", "공지사항 관리", "공지 목록을 서버 렌더링으로 표시합니다.", null, null)' />
     <div class="card">
         <div class="table-responsive">
diff --git a/src/TaxBaik.Web/Pages/Admin/ClientLogs/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/ClientLogs/Index.cshtml
index 42c38d2..6597f80 100644
--- a/src/TaxBaik.Web/Pages/Admin/ClientLogs/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/ClientLogs/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.ClientLogs.IndexModel
 @{ ViewData["Title"] = "클라이언트 로그"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("운영 로그", "클라이언트 로그", "고객별 작업 이력을 확인합니다.", null, null)' />
     <partial name="_ComingSoon" model="클라이언트 로그" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/CommonCodes/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/CommonCodes/Index.cshtml
index f0fac90..8fbe474 100644
--- a/src/TaxBaik.Web/Pages/Admin/CommonCodes/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/CommonCodes/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.CommonCodes.IndexModel
 @{ ViewData["Title"] = "공통코드"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("운영 설정", "공통 코드", "코드성 데이터를 표준화해 관리합니다.", null, null)' />
     <partial name="_ComingSoon" model="공통 코드" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/Companies/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Companies/Index.cshtml
index 521872e..6d528e1 100644
--- a/src/TaxBaik.Web/Pages/Admin/Companies/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Companies/Index.cshtml
@@ -2,7 +2,7 @@
 @model TaxBaik.Web.Pages.Admin.Companies.IndexModel
 @{ ViewData["Title"] = "회사"; }
 
-<section class="container-fluid py-4">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("CRM", "회사 관리", "고객사 회사를 관리합니다.", null, null)' />
     <div class="card">
         <div class="table-responsive">
diff --git a/src/TaxBaik.Web/Pages/Admin/ConsultingActivities/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/ConsultingActivities/Index.cshtml
index 5816829..4c6e1e7 100644
--- a/src/TaxBaik.Web/Pages/Admin/ConsultingActivities/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/ConsultingActivities/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.ConsultingActivities.IndexModel
 @{ ViewData["Title"] = "상담 활동"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("세무 운영", "상담 활동", "상담 히스토리와 후속 조치를 관리합니다.", null, null)' />
     <partial name="_ComingSoon" model="상담 활동" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/Contracts/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Contracts/Index.cshtml
index 35643d3..cd9829c 100644
--- a/src/TaxBaik.Web/Pages/Admin/Contracts/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Contracts/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.Contracts.IndexModel
 @{ ViewData["Title"] = "계약"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("세무 운영", "계약 관리", "계약 상태와 만료일을 추적합니다.", null, null)' />
     <partial name="_ComingSoon" model="계약 관리" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/Faqs/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Faqs/Index.cshtml
index b171905..7ec12c2 100644
--- a/src/TaxBaik.Web/Pages/Admin/Faqs/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Faqs/Index.cshtml
@@ -2,7 +2,7 @@
 @model TaxBaik.Web.Pages.Admin.Faqs.IndexModel
 @{ ViewData["Title"] = "FAQ"; }
 
-<section class="container-fluid py-4">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("Support", "FAQ 관리", "질문과 답변을 관리합니다.", null, null)' />
     <div class="card">
         <div class="table-responsive">
diff --git a/src/TaxBaik.Web/Pages/Admin/Inquiries/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Inquiries/Index.cshtml
index 0a4d421..929ebaa 100644
--- a/src/TaxBaik.Web/Pages/Admin/Inquiries/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Inquiries/Index.cshtml
@@ -2,7 +2,7 @@
 @model TaxBaik.Web.Pages.Admin.Inquiries.IndexModel
 @{ ViewData["Title"] = "문의"; }
 
-<section class="container-fluid py-4">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("Customer Requests", "문의 관리", "상담 요청을 상태별로 확인합니다.", null, null)' />
     <form method="get" class="card mb-3">
         <div class="card-body">
diff --git a/src/TaxBaik.Web/Pages/Admin/RevenueTrackings/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/RevenueTrackings/Index.cshtml
index c408c5e..0ec2e10 100644
--- a/src/TaxBaik.Web/Pages/Admin/RevenueTrackings/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/RevenueTrackings/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.RevenueTrackings.IndexModel
 @{ ViewData["Title"] = "매출 추적"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("세무 운영", "매출 추적", "월별 매출 추이를 확인하는 분석 화면입니다.", null, null)' />
     <partial name="_ComingSoon" model="매출 추적" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/SeasonSimulator/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/SeasonSimulator/Index.cshtml
index 51d5f63..c22627b 100644
--- a/src/TaxBaik.Web/Pages/Admin/SeasonSimulator/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/SeasonSimulator/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.SeasonSimulator.IndexModel
 @{ ViewData["Title"] = "시즌 시뮬레이터"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("운영 도구", "시즌 시뮬레이터", "정책 변경 시 영향을 미리 확인하는 도구입니다.", null, null)' />
     <partial name="_ComingSoon" model="시즌 시뮬레이터" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/Settings/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/Settings/Index.cshtml
index 91b6c41..5fd4047 100644
--- a/src/TaxBaik.Web/Pages/Admin/Settings/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/Settings/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.Settings.IndexModel
 @{ ViewData["Title"] = "설정"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("환경 설정", "설정", "시스템 기본값과 관리자 운영 정책을 정리합니다.", null, null)' />
     <partial name="_ComingSoon" model="설정 기능" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/TaxFilingSchedules/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/TaxFilingSchedules/Index.cshtml
index 12d3477..acd1682 100644
--- a/src/TaxBaik.Web/Pages/Admin/TaxFilingSchedules/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/TaxFilingSchedules/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.TaxFilingSchedules.IndexModel
 @{ ViewData["Title"] = "신고 일정"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("세무 운영", "세금 신고 일정", "세무 신고 마감 일정과 상태를 관리합니다.", null, null)' />
     <partial name="_ComingSoon" model="세금 신고 일정" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/TaxFilings/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/TaxFilings/Index.cshtml
index 016f98b..f753e32 100644
--- a/src/TaxBaik.Web/Pages/Admin/TaxFilings/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/TaxFilings/Index.cshtml
@@ -1,7 +1,7 @@
 @page
 @model TaxBaik.Web.Pages.Admin.TaxFilings.IndexModel
 @{ ViewData["Title"] = "세금 신고"; }
-<section class="container admin-page-shell">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("세무 운영", "세금 신고", "신고 상태를 한 화면에서 관리합니다.", null, null)' />
     <partial name="_ComingSoon" model="세금 신고 관리" />
 </section>
diff --git a/src/TaxBaik.Web/Pages/Admin/TaxProfiles/Index.cshtml b/src/TaxBaik.Web/Pages/Admin/TaxProfiles/Index.cshtml
index 98ed947..4579949 100644
--- a/src/TaxBaik.Web/Pages/Admin/TaxProfiles/Index.cshtml
+++ b/src/TaxBaik.Web/Pages/Admin/TaxProfiles/Index.cshtml
@@ -2,7 +2,7 @@
 @model TaxBaik.Web.Pages.Admin.TaxProfiles.IndexModel
 @{ ViewData["Title"] = "세무 프로필"; }
 
-<section class="container-fluid py-4">
+<section class="admin-page-shell">
     <partial name="_AdminPageHeader" model='("Tax", "세무 프로필 관리", "고객별 세무 속성을 관리합니다.", null, null)' />
     <div class="card">
         <div class="table-responsive">