diff --git a/TaxBaik.Web/Pages/Portal/Index.cshtml b/TaxBaik.Web/Pages/Portal/Index.cshtml
index 5d8f74b..42a3a64 100644
--- a/TaxBaik.Web/Pages/Portal/Index.cshtml
+++ b/TaxBaik.Web/Pages/Portal/Index.cshtml
@@ -1,34 +1,171 @@
 @page "/portal"
 @model TaxBaik.Web.Pages.Portal.IndexModel
 @{
-    ViewData["Title"] = "고객 포털";
-    ViewData["Description"] = "고객이 신고 일정, 상담 요약, 중요 알림을 확인하는 전용 포털입니다.";
-    ViewData["CanonicalUrl"] = $"{Request.Scheme}://{Request.Host}/taxbaik/portal";
+    ViewData["Title"] = "마이 포털 - 세무사 백원숙";
+    ViewData["Description"] = "고객님의 세무 신고 일정과 상담 이력을 실시간으로 확인하실 수 있는 마이페이지입니다.";
 }
 
-<section class="container py-5">
-    <div class="row g-4 align-items-start">
-        <div class="col-lg-7">
-            <p class="text-uppercase text-muted small mb-2">Portal</p>
-            <h1 class="display-6 fw-bold mb-3">고객 포털</h1>
-            <p class="lead text-muted mb-4">
-                신고 일정, 상담 요약, 승인된 알림을 확인할 수 있는 전용 공간입니다.
-            </p>
-            <div class="d-flex gap-2 flex-wrap">
-                <a class="btn btn-dark" href="/taxbaik/portal/login">로그인</a>
-                <a class="btn btn-outline-dark" href="/taxbaik/portal/register">회원가입</a>
+<div class="bg-light py-5">
+    <div class="container">
+        <!-- 상단 헤더 & 환영 문구 -->
+        <div class="d-flex flex-wrap justify-content-between align-items-center mb-5 pb-4 border-bottom">
+            <div>
+                <p class="text-primary fw-bold mb-1">TaxBaik My Portal</p>
+                <h1 class="display-6 fw-bold text-dark">안녕하세요, @(User.Identity?.Name)님!</h1>
+                @if (Model.ClientInfo != null)
+                {
+                    <p class="text-muted mb-0">
+                        <i class="bi bi-building"></i> @(string.IsNullOrEmpty(Model.ClientInfo.CompanyName) ? "개인 고객" : Model.ClientInfo.CompanyName) 
+                        | <i class="bi bi-telephone"></i> @Model.ClientInfo.Phone
+                    </p>
+                }
+            </div>
+            <div class="mt-3 mt-sm-0">
+                <form method="post" action="/taxbaik/portal/logout" class="d-inline">
+                    @Html.AntiForgeryToken()
+                    <button type="submit" class="btn btn-outline-danger btn-sm">
+                        <i class="bi bi-box-arrow-right"></i> 로그아웃
+                    </button>
+                </form>
             </div>
         </div>
-        <div class="col-lg-5">
-            <div class="p-4 bg-light border rounded-3">
-                <h2 class="h5 fw-bold mb-3">제공 예정 기능</h2>
-                <ul class="mb-0 text-muted">
-                    <li>본인 신고 일정 확인</li>
-                    <li>상담 요약 열람</li>
-                    <li>중요 알림 수신</li>
-                    <li>관리자 승인 범위 내 정보 제공</li>
-                </ul>
+
+        @if (Model.ClientInfo == null)
+        {
+            <!-- 연동 대기 경고 -->
+            <div class="card border-warning shadow-sm mb-5">
+                <div class="card-body p-5 text-center">
+                    <div class="mb-4">
+                        <span class="display-1 text-warning"><i class="bi bi-exclamation-triangle-fill"></i></span>
+                    </div>
+                    <h3 class="fw-bold text-dark mb-3">고객 정보 연동 대기 중</h3>
+                    <p class="text-muted max-width-md mx-auto mb-4">
+                        가입하신 계정 정보(이메일/연락처)와 일치하는 세무 대리 고객 레코드를 찾지 못했습니다.<br />
+                        세무사 측에서 고객 등록을 완료하거나 관리자 백오피스에서 이메일/전화번호가 일치하도록 지정하면 자동으로 포털 데이터가 활성화됩니다.
+                    </p>
+                    <a href="/taxbaik/contact" class="btn btn-primary px-4 py-2">
+                        <i class="bi bi-chat-dots"></i> 세무사에게 문의하기
+                    </a>
+                </div>
             </div>
-        </div>
+        }
+        else
+        {
+            <div class="row g-4">
+                <!-- 왼쪽: 세무 신고 현황 (Tax Filings) -->
+                <div class="col-lg-8">
+                    <div class="card border-0 shadow-sm rounded-3 mb-4">
+                        <div class="card-body p-4">
+                            <div class="d-flex justify-content-between align-items-center mb-4">
+                                <h3 class="h5 fw-bold text-dark mb-0">
+                                    <i class="bi bi-calendar-check text-primary me-2"></i> 나의 세무 신고 현황
+                                </h3>
+                                <span class="badge bg-secondary">총 @(Model.Filings.Count)건</span>
+                            </div>
+
+                            @if (!Model.Filings.Any())
+                            {
+                                <div class="text-center py-5 text-muted">
+                                    <i class="bi bi-folder-x display-4 d-block mb-3 text-secondary"></i>
+                                    등록된 세무 신고 일정이 없습니다.
+                                </div>
+                            }
+                            else
+                            {
+                                <div class="table-responsive">
+                                    <table class="table table-hover align-middle">
+                                        <thead class="table-light">
+                                            <tr>
+                                                <th scope="col">신고 종류</th>
+                                                <th scope="col">신고 기한</th>
+                                                <th scope="col">진행 상태</th>
+                                                <th scope="col">메모</th>
+                                            </tr>
+                                        </thead>
+                                        <tbody>
+                                            @foreach (var filing in Model.Filings)
+                                            {
+                                                var dDay = (filing.DueDate - DateTime.Today).Days;
+                                                var statusClass = filing.Status switch
+                                                {
+                                                    "filed" => "bg-success-subtle text-success",
+                                                    "overdue" => "bg-danger-subtle text-danger",
+                                                    _ => "bg-warning-subtle text-warning-emphasis"
+                                                };
+                                                var statusLabel = filing.Status switch
+                                                {
+                                                    "filed" => "신고 완료",
+                                                    "overdue" => "기한 초과",
+                                                    _ => $"D-{dDay}"
+                                                };
+
+                                                <tr>
+                                                    <td>
+                                                        <span class="fw-bold text-dark">@filing.FilingType</span>
+                                                    </td>
+                                                    <td>
+                                                        <span>@filing.DueDate.ToString("yyyy-MM-dd")</span>
+                                                    </td>
+                                                    <td>
+                                                        <span class="badge @statusClass px-2.5 py-1.5 fs-7">@statusLabel</span>
+                                                    </td>
+                                                    <td class="text-muted small">
+                                                        @(string.IsNullOrEmpty(filing.Memo) ? "-" : filing.Memo)
+                                                    </td>
+                                                </tr>
+                                            }
+                                        </tbody>
+                                    </table>
+                                </div>
+                            }
+                        </div>
+                    </div>
+                </div>
+
+                <!-- 오른쪽: 상담 이력 요약 (Consulting Activities) -->
+                <div class="col-lg-4">
+                    <div class="card border-0 shadow-sm rounded-3">
+                        <div class="card-body p-4">
+                            <h3 class="h5 fw-bold text-dark mb-4">
+                                <i class="bi bi-chat-text text-primary me-2"></i> 최근 상담 및 지원 이력
+                            </h3>
+
+                            @if (!Model.Consultations.Any())
+                            {
+                                <div class="text-center py-5 text-muted">
+                                    <i class="bi bi-chat-square-dots display-4 d-block mb-3 text-secondary"></i>
+                                    최근 상담 이력이 없습니다.
+                                </div>
+                            }
+                            else
+                            {
+                                <div class="timeline">
+                                    @foreach (var activity in Model.Consultations)
+                                    {
+                                        <div class="border-start border-2 border-primary-subtle ps-3 pb-4 position-relative">
+                                            <!-- 타임라인 아이콘 -->
+                                            <div class="position-absolute start-0 translate-middle-x bg-primary rounded-circle" 
+                                                 style="width: 10px; height: 10px; margin-left: -1px; top: 6px;"></div>
+                                            
+                                            <div class="d-flex justify-content-between align-items-center mb-1">
+                                                <span class="badge bg-primary-subtle text-primary small">@activity.ActivityType</span>
+                                                <small class="text-muted">@activity.ActivityDate.ToString("yyyy-MM-dd")</small>
+                                            </div>
+                                            <p class="text-dark small mb-1 fw-semibold">@activity.Description</p>
+                                            @if (!string.IsNullOrEmpty(activity.Outcome))
+                                            {
+                                                <div class="bg-light p-2 rounded small text-muted mt-1">
+                                                    <strong>결과:</strong> @activity.Outcome
+                                                </div>
+                                            }
+                                        </div>
+                                    }
+                                </div>
+                            }
+                        </div>
+                    </div>
+                </div>
+            </div>
+        }
     </div>
-</section>
+</div>
diff --git a/TaxBaik.Web/Pages/Portal/Index.cshtml.cs b/TaxBaik.Web/Pages/Portal/Index.cshtml.cs
index 8ec3edc..78a2560 100644
--- a/TaxBaik.Web/Pages/Portal/Index.cshtml.cs
+++ b/TaxBaik.Web/Pages/Portal/Index.cshtml.cs
@@ -1,5 +1,9 @@
+using System.Security.Claims;
 using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
 using Microsoft.AspNetCore.Mvc.RazorPages;
+using TaxBaik.Application.Services;
+using TaxBaik.Domain.Entities;
 using TaxBaik.Web.Services;
 
 namespace TaxBaik.Web.Pages.Portal;
@@ -7,7 +11,39 @@ namespace TaxBaik.Web.Pages.Portal;
 [Authorize(AuthenticationSchemes = PortalAuthDefaults.Scheme)]
 public class IndexModel : PageModel
 {
-    public void OnGet()
+    private readonly TaxFilingService _taxFilingService;
+    private readonly ConsultingActivityService _consultingActivityService;
+    private readonly ClientService _clientService;
+
+    public IndexModel(
+        TaxFilingService taxFilingService,
+        ConsultingActivityService consultingActivityService,
+        ClientService clientService)
     {
+        _taxFilingService = taxFilingService;
+        _consultingActivityService = consultingActivityService;
+        _clientService = clientService;
+    }
+
+    public Client? ClientInfo { get; private set; }
+    public List<TaxFiling> Filings { get; private set; } = new();
+    public List<ConsultingActivity> Consultations { get; private set; } = new();
+
+    public async Task<IActionResult> OnGetAsync()
+    {
+        var clientIdClaim = User.FindFirst("client_id");
+        if (clientIdClaim != null && int.TryParse(clientIdClaim.Value, out var clientId))
+        {
+            ClientInfo = await _clientService.GetByIdAsync(clientId);
+            if (ClientInfo != null)
+            {
+                var filingsData = await _taxFilingService.GetByClientIdAsync(clientId);
+                Filings = filingsData.OrderBy(f => f.DueDate).ToList();
+
+                var consultationsData = await _consultingActivityService.GetByClientIdAsync(clientId);
+                Consultations = consultationsData.OrderByDescending(c => c.ActivityDate).ToList();
+            }
+        }
+        return Page();
     }
 }
diff --git a/TaxBaik.Web/wwwroot/css/admin.css b/TaxBaik.Web/wwwroot/css/admin.css
index 573e417..1930695 100644
--- a/TaxBaik.Web/wwwroot/css/admin.css
+++ b/TaxBaik.Web/wwwroot/css/admin.css
@@ -411,11 +411,41 @@ textarea:focus-visible {
   background-color: var(--bg-secondary);
 }
 
+.admin-shell .mud-typography--h4 {
+  font-size: 1.35rem;
+  line-height: 1.2;
+}
+
+.admin-shell .mud-typography--h6 {
+  font-size: 0.88rem;
+  line-height: 1.2;
+}
+
+.admin-shell .mud-typography--subtitle1 {
+  font-size: 0.82rem;
+  line-height: 1.3;
+}
+
+.admin-shell .mud-typography--body1 {
+  font-size: 0.82rem;
+  line-height: 1.4;
+}
+
+.admin-shell .mud-typography--body2 {
+  font-size: 0.75rem;
+  line-height: 1.35;
+}
+
+.admin-shell .mud-typography--caption {
+  font-size: 0.68rem;
+  line-height: 1.2;
+}
+
 .admin-topbar {
   display: flex;
   align-items: center;
-  gap: var(--space-4);
-  padding: 8px 20px;
+  gap: 12px;
+  padding: 6px 16px;
   background-color: var(--bg-primary);
   border-bottom: 1px solid var(--border-color);
   z-index: var(--z-dropdown);
@@ -429,7 +459,7 @@ textarea:focus-visible {
 .admin-topbar-title {
   display: flex;
   flex-direction: column;
-  gap: 2px;
+  gap: 0;
 }
 
 .admin-topbar-title span {
@@ -437,20 +467,25 @@ textarea:focus-visible {
 }
 
 .admin-topbar-title .mud-typography--h6 {
-  font-size: 0.95rem;
-  line-height: 1.2;
+  font-size: 0.85rem;
+  line-height: 1.15;
   font-weight: var(--font-weight-semibold);
 }
 
 .admin-topbar-action {
   white-space: nowrap;
-  min-height: 36px;
-  padding: 6px 12px;
-  font-size: 0.875rem;
+  min-height: 32px;
+  padding: 4px 10px;
+  font-size: 0.8rem;
+}
+
+.admin-shell .mud-button-root {
+  min-height: 32px;
+  font-size: 0.8rem;
 }
 
 .admin-drawer {
-  width: 224px;
+  width: 208px;
   background-color: var(--bg-primary);
   border-right: 1px solid var(--border-color);
   display: flex;
@@ -460,8 +495,8 @@ textarea:focus-visible {
 .admin-drawer-brand {
   display: flex;
   align-items: center;
-  gap: var(--space-3);
-  padding: 12px;
+  gap: 10px;
+  padding: 10px 12px;
   border-bottom: 1px solid var(--border-color-light);
 }
 
@@ -469,37 +504,37 @@ textarea:focus-visible {
   display: flex;
   align-items: center;
   justify-content: center;
-  width: 40px;
-  height: 40px;
+  width: 36px;
+  height: 36px;
   border-radius: var(--radius-md);
   background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
   color: var(--primary-contrast);
   font-weight: var(--font-weight-bold);
-  font-size: 1.125rem;
+  font-size: 1rem;
   flex-shrink: 0;
 }
 
 .admin-nav {
-  padding: 6px 0;
+  padding: 4px 0;
   flex: 1;
   overflow-y: auto;
 }
 
 .admin-nav .mud-nav-link,
 .admin-nav .mud-nav-group-header {
-  margin: 1px 8px !important;
+  margin: 1px 6px !important;
   border-radius: 6px !important;
   transition: all var(--transition-base) !important;
 }
 
 .admin-nav .mud-nav-link {
-  min-height: 36px;
-  font-size: 0.85rem;
+  min-height: 32px;
+  font-size: 0.78rem;
 }
 
 .admin-nav .mud-nav-group-header {
-  min-height: 36px;
-  font-size: 0.85rem;
+  min-height: 32px;
+  font-size: 0.78rem;
 }
 
 .admin-nav .mud-nav-link:hover {
@@ -543,7 +578,7 @@ textarea:focus-visible {
 }
 
 .admin-content {
-  padding: 20px;
+  padding: 16px;
   max-width: 1400px;
   margin: 0 auto;
   width: 100%;
@@ -557,9 +592,9 @@ textarea:focus-visible {
   display: flex;
   justify-content: space-between;
   align-items: center;
-  gap: 20px;
-  margin-bottom: 20px;
-  padding-bottom: 12px;
+  gap: 16px;
+  margin-bottom: 16px;
+  padding-bottom: 10px;
   border-bottom: 1px solid var(--border-color);
 }
 
@@ -572,8 +607,8 @@ textarea:focus-visible {
   color: var(--primary-color);
   font-weight: var(--font-weight-semibold);
   text-transform: uppercase;
-  font-size: var(--font-size-xs);
-  letter-spacing: 0.5px;
+  font-size: 0.7rem;
+  letter-spacing: 0;
   margin-bottom: var(--space-1);
 }
 
@@ -581,16 +616,16 @@ textarea:focus-visible {
   display: block;
   color: var(--text-primary);
   font-weight: var(--font-weight-semibold);
-  margin-bottom: 4px;
-  font-size: 1.75rem;
+  margin-bottom: 2px;
+  font-size: 1.45rem;
   line-height: var(--line-height-tight);
 }
 
 .admin-page-subtitle {
   display: block;
   color: var(--text-secondary);
-  font-size: 0.9rem;
-  line-height: var(--line-height-normal);
+  font-size: 0.8rem;
+  line-height: 1.35;
 }
 
 /* Metrics Grid */
@@ -604,7 +639,7 @@ textarea:focus-visible {
 
 /* Metric Card - Enterprise Grade */
 .admin-metric-card {
-  padding: 12px;
+  padding: 10px;
   border-radius: var(--radius-md);
   background-color: var(--bg-primary);
   border: 1px solid var(--border-color);
@@ -613,12 +648,52 @@ textarea:focus-visible {
   display: flex;
   flex-direction: column;
   justify-content: space-between;
-  min-height: 128px;
+  min-height: 116px;
   box-shadow: var(--shadow-xs);
   position: relative;
   overflow: hidden;
 }
 
+.admin-metric-card-body {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+  height: 100%;
+}
+
+.admin-metric-card-label {
+  font-size: 0.68rem;
+  color: var(--text-tertiary);
+  text-transform: uppercase;
+  font-weight: var(--font-weight-semibold);
+}
+
+.admin-metric-card-value-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  flex: 1;
+  gap: 8px;
+}
+
+.admin-metric-card-value {
+  font-size: 1.45rem;
+  font-weight: var(--font-weight-bold);
+  line-height: 1;
+}
+
+.admin-metric-card-icon {
+  font-size: 1.9rem;
+  opacity: 0.14;
+  line-height: 1;
+}
+
+.admin-metric-card-caption {
+  font-size: 0.78rem;
+  color: var(--text-secondary);
+  line-height: 1.3;
+}
+
 .admin-metric-card::before {
   content: '';
   position: absolute;
@@ -692,11 +767,11 @@ textarea:focus-visible {
 
 /* Surfaces & Containers */
 .admin-surface {
-  padding: 12px !important;
+  padding: 10px !important;
   border-radius: var(--radius-md) !important;
   background-color: var(--bg-primary) !important;
   border: 1px solid var(--border-color) !important;
-  margin-bottom: 12px !important;
+  margin-bottom: 10px !important;
   box-shadow: var(--shadow-xs);
 }
 
@@ -704,9 +779,9 @@ textarea:focus-visible {
   display: flex;
   justify-content: space-between;
   align-items: flex-start;
-  gap: 12px;
-  margin-bottom: 12px;
-  padding-bottom: 8px;
+  gap: 10px;
+  margin-bottom: 10px;
+  padding-bottom: 6px;
   border-bottom: 1px solid var(--border-color-light);
 }
 
@@ -715,14 +790,14 @@ textarea:focus-visible {
 }
 
 .admin-section-header h6 {
-  font-size: 0.95rem;
+  font-size: 0.85rem;
   font-weight: var(--font-weight-semibold);
   color: var(--text-primary);
-  margin-bottom: 4px;
+  margin-bottom: 2px;
 }
 
 .admin-section-header p {
-  font-size: 0.8rem;
+  font-size: 0.75rem;
   color: var(--text-secondary);
   margin: 0;
 }
@@ -731,7 +806,7 @@ textarea:focus-visible {
 .admin-table {
   width: 100%;
   border-collapse: collapse;
-  font-size: 0.8rem;
+  font-size: 0.75rem;
 }
 
 .admin-table thead {
@@ -740,13 +815,13 @@ textarea:focus-visible {
 }
 
 .admin-table thead th {
-  padding: 6px 10px;
+  padding: 5px 8px;
   text-align: left;
   font-weight: var(--font-weight-semibold);
   color: var(--text-secondary);
-  font-size: 0.7rem;
+  font-size: 0.65rem;
   text-transform: uppercase;
-  letter-spacing: 0.5px;
+  letter-spacing: 0;
 }
 
 .admin-table tbody tr {
@@ -763,11 +838,16 @@ textarea:focus-visible {
 }
 
 .admin-table tbody td {
-  padding: 6px 10px;
+  padding: 5px 8px;
   color: var(--text-primary);
   vertical-align: middle;
 }
 
+.admin-table .mud-chip {
+  font-size: 0.68rem;
+  height: 22px;
+}
+
 .admin-table tbody a {
   color: var(--primary-color);
   text-decoration: none;