diff --git a/eaccount/index.php b/eaccount/index.php
index 5ada23d..218fde4 100644
--- a/eaccount/index.php
+++ b/eaccount/index.php
@@ -163,22 +163,22 @@
 
         // Header Component
         const Header = ({ activeTab, onTabChange, tenants, currentTenantId, onTenantChange }) => (
-            <header className="bg-white border-b border-gray-100 sticky top-0 z-50">
+            <header className="bg-white border-b border-gray-100 sticky top-0 z-50 transition-all">
                 <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
                     <div className="h-16 flex items-center justify-between">
                         <div className="flex items-center gap-3">
-                            <div className="w-8 h-8 bg-blue-100 rounded-lg flex items-center justify-center text-blue-600 font-bold">
+                            <div className="w-8 h-8 bg-blue-100 rounded-lg flex items-center justify-center text-blue-600 font-bold shadow-sm">
                                 🏦
                             </div>
-                            <h1 className="text-lg font-semibold text-slate-900">계좌 입출금내역 조회</h1>
+                            <h1 className="text-lg font-semibold text-slate-900">계좌 입출금내역</h1>
                         </div>
-                        <div className="flex items-center gap-4">
+                        <div className="flex items-center gap-4 text-sm text-slate-500 font-medium">
                             {/* 테넌트 선택 드롭다운 */}
                             {tenants.length > 0 && (
                                 <select
                                     value={currentTenantId}
                                     onChange={(e) => onTenantChange(e.target.value)}
-                                    className="text-sm border border-slate-300 rounded-lg px-3 py-1.5 bg-white hover:bg-slate-50 focus:outline-none focus:ring-2 focus:ring-blue-500"
+                                    className="text-sm border border-slate-300 rounded-lg px-3 py-1.5 bg-white hover:bg-slate-50 focus:outline-none focus:ring-2 focus:ring-blue-500 mr-2"
                                 >
                                     {tenants.map(tenant => (
                                         <option key={tenant.id} value={tenant.id}>
@@ -187,21 +187,30 @@
                                     ))}
                                 </select>
                             )}
-                            <a href="../tenant/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <Icons.bank />
-                                바로빌 테넌트 관리
+                            
+                            <a href="../eaccount/index.php" className="text-blue-600 flex items-center gap-1 bg-blue-50 px-3 py-1.5 rounded-lg border border-blue-100 cursor-default font-bold">
+                                <Icons.wallet /> 계좌조회
                             </a>
-                            <a href="../etax/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <Icons.receipt />
-                                전자세금계산서
+                            <a href="../ecard/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <Icons.creditCard /> 카드내역
                             </a>
-                            <a href="../ecard/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <Icons.creditCard />
-                                법인카드 내역
+                            <a href="../tenant/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <Icons.bank /> 테넌트관리
                             </a>
-                            <a href="../index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                                <Icons.home />
-                                홈으로
+                            <a href="../barobill_registration/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"/><circle cx="9" cy="7" r="4"/><path d="M22 21v-2a4 4 0 0 0-3-3.87"/><path d="M16 3.13a4 4 0 0 1 0 7.75"/></svg> 회원관리
+                            </a>
+                            <a href="../etax/barobill_api_info.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <Icons.info className="w-4 h-4" /> API정보
+                            </a>
+
+                            <div className="h-4 w-px bg-slate-200 mx-1"></div>
+
+                            <a href="../etax/index.php" className="hover:text-blue-700 flex items-center gap-1">
+                                <Icons.receipt /> 세금계산서
+                            </a>
+                            <a href="../index.php" className="hover:text-blue-700 flex items-center gap-1">
+                                <Icons.home /> 홈
                             </a>
                         </div>
                     </div>
diff --git a/ecard/index.php b/ecard/index.php
index f81c7af..4dfca85 100644
--- a/ecard/index.php
+++ b/ecard/index.php
@@ -190,30 +190,38 @@
 
         // Header Component
         const Header = () => (
-            <header className="bg-white border-b border-gray-100 sticky top-0 z-50">
+            <header className="bg-white border-b border-gray-100 sticky top-0 z-50 transition-all">
                 <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-16 flex items-center justify-between">
                     <div className="flex items-center gap-3">
-                        <div className="w-8 h-8 bg-emerald-100 rounded-lg flex items-center justify-center text-emerald-600 font-bold">
+                        <div className="w-8 h-8 bg-emerald-100 rounded-lg flex items-center justify-center text-emerald-600 font-bold shadow-sm">
                             💳
                         </div>
-                        <h1 className="text-lg font-semibold text-slate-900">법인카드 사용내역 조회</h1>
+                        <h1 className="text-lg font-semibold text-slate-900">법인카드 사용내역</h1>
                     </div>
-                    <div className="flex items-center gap-4">
-                        <a href="../eaccount/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                            <Icons.wallet />
-                            계좌내역 조회
+                    <div className="flex items-center gap-4 text-sm text-slate-500 font-medium">
+                        <a href="../eaccount/index.php" className="hover:text-emerald-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <Icons.wallet /> 계좌조회
                         </a>
-                        <a href="../tenant/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                            <Icons.bank />
-                            바로빌 테넌트 관리
+                        <a href="../ecard/index.php" className="text-emerald-600 flex items-center gap-1 bg-emerald-50 px-3 py-1.5 rounded-lg border border-emerald-100 cursor-default font-bold">
+                            <Icons.creditCard /> 카드내역
                         </a>
-                        <a href="../etax/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                            <Icons.receipt />
-                            전자세금계산서
+                        <a href="../tenant/index.php" className="hover:text-emerald-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <Icons.building /> 테넌트관리
                         </a>
-                        <a href="../index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                            <Icons.home />
-                            홈으로
+                        <a href="../barobill_registration/index.php" className="hover:text-emerald-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                             <svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"/><circle cx="9" cy="7" r="4"/><path d="M22 21v-2a4 4 0 0 0-3-3.87"/><path d="M16 3.13a4 4 0 0 1 0 7.75"/></svg> 회원관리
+                        </a>
+                        <a href="../etax/barobill_api_info.php" className="hover:text-emerald-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <Icons.info className="w-4 h-4" /> API정보
+                        </a>
+
+                        <div className="h-4 w-px bg-slate-200 mx-1"></div>
+
+                        <a href="../etax/index.php" className="hover:text-emerald-700 flex items-center gap-1">
+                            <Icons.receipt /> 세금계산서
+                        </a>
+                        <a href="../index.php" className="hover:text-emerald-700 flex items-center gap-1">
+                            <Icons.home /> 홈
                         </a>
                     </div>
                 </div>
diff --git a/etax/index.php b/etax/index.php
index 1e30649..d62e7a8 100644
--- a/etax/index.php
+++ b/etax/index.php
@@ -53,34 +53,38 @@
         // 1. Header Component
         const Header = ({ onOpenHelp }) => {
             return (
-                <header className="bg-white border-b border-gray-100 sticky top-0 z-50">
+                <header className="bg-white border-b border-gray-100 sticky top-0 z-50 transition-all">
                     <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-16 flex items-center justify-between">
                         <div className="flex items-center gap-3">
-                            <div className="w-8 h-8 bg-blue-100 rounded-lg flex items-center justify-center text-blue-600 font-bold">
+                            <div className="w-8 h-8 bg-blue-100 rounded-lg flex items-center justify-center text-blue-600 font-bold shadow-sm">
                                 📋
                             </div>
                             <h1 className="text-lg font-semibold text-slate-900">전자세금계산서 솔루션</h1>
                         </div>
-                        <div className="flex items-center gap-4">
-                            <a href="../eaccount/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="wallet" className="w-4 h-4"></i>
-                                계좌내역 조회
+                        <div className="flex items-center gap-4 text-sm text-slate-500 font-medium">
+                            <a href="../eaccount/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <i data-lucide="wallet" className="w-4 h-4 text-blue-500"></i> 계좌조회
                             </a>
-                            <a href="../tenant/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="building" className="w-4 h-4"></i>
-                                바로빌 테넌트 관리
+                            <a href="../ecard/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <i data-lucide="credit-card" className="w-4 h-4 text-purple-500"></i> 카드내역
                             </a>
-                            <a href="../ecard/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="credit-card" className="w-4 h-4"></i>
-                                법인카드 내역
+                            <a href="../tenant/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <i data-lucide="building" className="w-4 h-4 text-blue-600"></i> 테넌트관리
                             </a>
-                            <a href="barobill_api_info.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                                <i data-lucide="book-open" className="w-4 h-4"></i>
-                                API 정보
+                            <a href="../barobill_registration/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                 <i data-lucide="users" className="w-4 h-4 text-teal-500"></i> 회원관리
                             </a>
-                            <a href="../index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                                <i data-lucide="home" className="w-4 h-4"></i>
-                                홈으로
+                            <a href="barobill_api_info.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                                <i data-lucide="book-open" className="w-4 h-4 text-orange-500"></i> API정보
+                            </a>
+
+                            <div className="h-4 w-px bg-slate-200 mx-1"></div>
+
+                            <a href="../etax/index.php" className="text-blue-600 flex items-center gap-1 bg-blue-50 px-3 py-1.5 rounded-lg border border-blue-100 cursor-default font-bold">
+                                <i data-lucide="file-text" className="w-4 h-4"></i> 세금계산서
+                            </a>
+                            <a href="../index.php" className="hover:text-blue-700 flex items-center gap-1">
+                                <i data-lucide="home" className="w-4 h-4"></i> 홈
                             </a>
                         </div>
                     </div>
diff --git a/tenant/index.php b/tenant/index.php
index ab2ab93..4088121 100644
--- a/tenant/index.php
+++ b/tenant/index.php
@@ -68,43 +68,44 @@ require_once($_SERVER['DOCUMENT_ROOT'] . "/session.php");
         const { useState, useEffect, useRef } = React;
 
         // --- Header Component ---
-        const Header = () => {
-            const handleRefresh = () => {
-                window.location.reload();
-            };
-            return (
-                <header className="bg-white border-b border-gray-100 sticky top-0 z-40 flex-none">
-                    <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-16 flex items-center justify-between">
-                        <div className="flex items-center gap-3">
-                            <i data-lucide="building" className="w-6 h-6 text-blue-600"></i>
-                            <h1 className="text-lg font-semibold text-slate-900">바로빌 테넌트 관리</h1>
-                        </div>
-                        <div className="flex items-center gap-4">
-                            <a href="../eaccount/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="wallet" className="w-4 h-4"></i>
-                                계좌내역 조회
-                            </a>
-                            <a href="../etax/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="receipt" className="w-4 h-4"></i>
-                                전자세금계산서
-                            </a>
-                            <a href="../ecard/index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1 bg-slate-100 hover:bg-slate-200 px-3 py-1.5 rounded-lg transition-colors">
-                                <i data-lucide="credit-card" className="w-4 h-4"></i>
-                                법인카드 내역
-                            </a>
-                            <a href="../index.php" className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                                <i data-lucide="home" className="w-4 h-4"></i>
-                                홈으로
-                            </a>
-                            <button onClick={handleRefresh} className="text-sm text-slate-500 hover:text-slate-900 flex items-center gap-1">
-                                <i data-lucide="refresh-cw" className="w-4 h-4"></i>
-                                새로고침
-                            </button>
+        const Header = () => (
+            <header className="bg-white border-b border-gray-100 sticky top-0 z-50 transition-all">
+                <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8 h-16 flex items-center justify-between">
+                    <div className="flex items-center gap-3">
+                        <div className="w-8 h-8 bg-blue-600 rounded-lg flex items-center justify-center text-white shadow-sm">
+                            <i data-lucide="building" className="w-5 h-5"></i>
                         </div>
+                        <h1 className="text-lg font-semibold text-slate-900">바로빌 테넌트 관리</h1>
                     </div>
-                </header>
-            );
-        };
+                    <div className="flex items-center gap-4 text-sm text-slate-500 font-medium">
+                        <a href="../eaccount/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <i data-lucide="wallet" className="w-4 h-4 text-blue-500"></i> 계좌조회
+                        </a>
+                        <a href="../ecard/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <i data-lucide="credit-card" className="w-4 h-4 text-purple-500"></i> 카드내역
+                        </a>
+                        <a href="../tenant/index.php" className="text-blue-600 flex items-center gap-1 bg-blue-50 px-3 py-1.5 rounded-lg border border-blue-100 cursor-default font-bold">
+                            <i data-lucide="building" className="w-4 h-4 text-blue-600"></i> 테넌트관리
+                        </a>
+                        <a href="../barobill_registration/index.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                             <i data-lucide="users" className="w-4 h-4 text-teal-500"></i> 회원관리
+                        </a>
+                        <a href="../etax/barobill_api_info.php" className="hover:text-blue-600 flex items-center gap-1 bg-slate-50 hover:bg-slate-100 px-3 py-1.5 rounded-lg transition-colors border border-slate-100">
+                            <i data-lucide="book-open" className="w-4 h-4 text-orange-500"></i> API정보
+                        </a>
+
+                        <div className="h-4 w-px bg-slate-200 mx-1"></div>
+
+                        <a href="../etax/index.php" className="hover:text-blue-700 flex items-center gap-1">
+                            <i data-lucide="file-text" className="w-4 h-4"></i> 세금계산서
+                        </a>
+                        <a href="../index.php" className="hover:text-blue-700 flex items-center gap-1">
+                            <i data-lucide="home" className="w-4 h-4"></i> 홈
+                        </a>
+                    </div>
+                </div>
+            </header>
+        );
 
         // --- Icons ---
         const TrashIcon = ({ className }) => (