feat: 시즌별 마케팅 + 공지사항 관리 기능 추가

- 연간 세무 캘린더(7개 시즌) 기반 자동 Hero 섹션 전환
- 시즌 감지 시 D-Day 카운트다운, 긴박감 배지, 시즌 CTA 표시
- 서비스 카드 순서 시즌 관련 항목 우선 정렬
- 어드민 공지사항 CRUD (등록·수정·삭제, 기간·유형 설정)
- 홈페이지 상단 공지 배너 자동 노출 (일반/배너/긴급)
- CLAUDE.md에 세무 캘린더 및 마케팅 방향 하네스 추가

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

TaxBaik.Web/Components/Admin/Pages/Announcements/AnnouncementEdit.razor

@@ -0,0 +1,161 @@
+@page "/admin/announcements/create"
+@page "/admin/announcements/{Id:int}/edit"
+@attribute [Authorize]
+@using TaxBaik.Application.DTOs
+@using TaxBaik.Application.Services
+@inject AnnouncementService AnnouncementService
+@inject NavigationManager Navigation
+@inject ISnackbar Snackbar
+
+<PageTitle>@(Id.HasValue ? "공지 수정" : "공지 등록")</PageTitle>
+
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">Homepage</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">@(Id.HasValue ? "공지 수정" : "공지 등록")</MudText>
+    </div>
+</section>
+
+<MudPaper Class="admin-surface" Elevation="0">
+    <MudForm @ref="form">
+        <MudGrid>
+            <MudItem xs="12">
+                <MudTextField @bind-Value="model.Title"
+                              Label="제목"
+                              Variant="Variant.Outlined"
+                              Required="true"
+                              RequiredError="제목을 입력하세요."
+                              HelperText="홈페이지 상단 공지 바에 표시되는 텍스트입니다." />
+            </MudItem>
+
+            <MudItem xs="12">
+                <MudTextField @bind-Value="model.Content"
+                              Label="상세 내용 (선택)"
+                              Variant="Variant.Outlined"
+                              Lines="3"
+                              HelperText="부가 설명이 있을 경우 입력합니다. 없으면 제목만 표시됩니다." />
+            </MudItem>
+
+            <MudItem xs="12" sm="6">
+                <MudSelect @bind-Value="model.DisplayType"
+                           Label="유형"
+                           Variant="Variant.Outlined">
+                    <MudSelectItem Value="@("info")">일반 (파란색)</MudSelectItem>
+                    <MudSelectItem Value="@("banner")">배너 (주황색) — 중요 이벤트</MudSelectItem>
+                    <MudSelectItem Value="@("urgent")">긴급 (빨간색) — 마감 임박</MudSelectItem>
+                </MudSelect>
+            </MudItem>
+
+            <MudItem xs="12" sm="6">
+                <MudNumericField @bind-Value="model.SortOrder"
+                                 Label="노출 순서"
+                                 Variant="Variant.Outlined"
+                                 HelperText="숫자가 클수록 먼저 표시됩니다." />
+            </MudItem>
+
+            <MudItem xs="12" sm="6">
+                <MudDatePicker @bind-Date="startsAtDate"
+                               Label="게시 시작일 (비우면 즉시)"
+                               Variant="Variant.Outlined"
+                               DateFormat="yyyy-MM-dd"
+                               Clearable="true" />
+            </MudItem>
+
+            <MudItem xs="12" sm="6">
+                <MudDatePicker @bind-Date="endsAtDate"
+                               Label="게시 종료일 (비우면 무기한)"
+                               Variant="Variant.Outlined"
+                               DateFormat="yyyy-MM-dd"
+                               Clearable="true" />
+            </MudItem>
+
+            <MudItem xs="12">
+                <MudSwitch @bind-Checked="model.IsActive"
+                           Label="@(model.IsActive ? "활성화 (홈페이지에 노출)" : "비활성화 (홈페이지 미노출)")"
+                           Color="Color.Primary" />
+            </MudItem>
+        </MudGrid>
+
+        <div class="d-flex gap-2 mt-4">
+            <MudButton Variant="Variant.Filled" Color="Color.Primary"
+                       StartIcon="@Icons.Material.Filled.Save"
+                       Disabled="isSaving"
+                       @onclick="SaveAsync">
+                @(isSaving ? "저장 중..." : "저장")
+            </MudButton>
+            <MudButton Variant="Variant.Outlined"
+                       @onclick="@(() => Navigation.NavigateTo("/taxbaik/admin/announcements"))">
+                취소
+            </MudButton>
+        </div>
+    </MudForm>
+</MudPaper>
+
+@code {
+    [Parameter] public int? Id { get; set; }
+
+    private MudForm? form;
+    private bool isSaving;
+    private DateTime? startsAtDate;
+    private DateTime? endsAtDate;
+
+    private AnnouncementDto model = new();
+
+    protected override async Task OnInitializedAsync()
+    {
+        if (Id.HasValue)
+        {
+            var entity = await AnnouncementService.GetByIdAsync(Id.Value);
+            if (entity is null)
+            {
+                Navigation.NavigateTo("/taxbaik/admin/announcements");
+                return;
+            }
+            model = new AnnouncementDto
+            {
+                Id          = entity.Id,
+                Title       = entity.Title,
+                Content     = entity.Content,
+                DisplayType = entity.DisplayType,
+                IsActive    = entity.IsActive,
+                SortOrder   = entity.SortOrder
+            };
+            startsAtDate = entity.StartsAt?.ToLocalTime();
+            endsAtDate   = entity.EndsAt?.ToLocalTime();
+        }
+    }
+
+    private async Task SaveAsync()
+    {
+        if (form is null) return;
+        await form.Validate();
+        if (!form.IsValid) return;
+
+        isSaving = true;
+        try
+        {
+            model.StartsAt = startsAtDate.HasValue
+                ? DateTime.SpecifyKind(startsAtDate.Value.Date, DateTimeKind.Local).ToUniversalTime()
+                : null;
+            model.EndsAt = endsAtDate.HasValue
+                ? DateTime.SpecifyKind(endsAtDate.Value.Date.AddDays(1).AddSeconds(-1), DateTimeKind.Local).ToUniversalTime()
+                : null;
+
+            if (Id.HasValue)
+                await AnnouncementService.UpdateAsync(model);
+            else
+                await AnnouncementService.CreateAsync(model);
+
+            Snackbar.Add("공지사항이 저장되었습니다.", Severity.Success);
+            Navigation.NavigateTo("/taxbaik/admin/announcements");
+        }
+        catch (Exception ex)
+        {
+            Snackbar.Add($"저장 실패: {ex.Message}", Severity.Error);
+        }
+        finally
+        {
+            isSaving = false;
+        }
+    }
+}

TaxBaik.Web/Components/Admin/Pages/Announcements/AnnouncementList.razor

@@ -0,0 +1,148 @@
+@page "/admin/announcements"
+@attribute [Authorize]
+@using TaxBaik.Application.Services
+@using TaxBaik.Domain.Entities
+@inject AnnouncementService AnnouncementService
+@inject NavigationManager Navigation
+@inject IDialogService DialogService
+@inject ISnackbar Snackbar
+
+<PageTitle>공지사항 관리</PageTitle>
+
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">Homepage</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">공지사항 관리</MudText>
+        <MudText Typo="Typo.body2" Class="admin-page-subtitle">홈페이지 상단에 노출되는 공지사항을 등록하고 관리합니다.</MudText>
+    </div>
+    <MudButton Variant="Variant.Filled" Color="Color.Primary"
+               StartIcon="@Icons.Material.Filled.Add"
+               Href="/taxbaik/admin/announcements/create">
+        공지 등록
+    </MudButton>
+</section>
+
+<MudPaper Class="admin-surface" Elevation="0">
+    @if (announcements is null)
+    {
+        <MudProgressLinear Indeterminate="true" />
+    }
+    else if (!announcements.Any())
+    {
+        <MudText Class="pa-4 text-muted">등록된 공지사항이 없습니다.</MudText>
+    }
+    else
+    {
+        <MudSimpleTable Striped="true" Dense="true" Class="admin-table">
+            <thead>
+                <tr>
+                    <th>제목</th>
+                    <th>유형</th>
+                    <th>상태</th>
+                    <th>게시 기간</th>
+                    <th>순서</th>
+                    <th></th>
+                </tr>
+            </thead>
+            <tbody>
+                @foreach (var item in announcements)
+                {
+                    <tr>
+                        <td>@item.Title</td>
+                        <td>
+                            <MudChip Size="Size.Small" Color="@GetTypeColor(item.DisplayType)">
+                                @GetTypeLabel(item.DisplayType)
+                            </MudChip>
+                        </td>
+                        <td>
+                            @if (IsCurrentlyActive(item))
+                            {
+                                <MudChip Size="Size.Small" Color="Color.Success">노출 중</MudChip>
+                            }
+                            else if (!item.IsActive)
+                            {
+                                <MudChip Size="Size.Small" Color="Color.Default">비활성</MudChip>
+                            }
+                            else
+                            {
+                                <MudChip Size="Size.Small" Color="Color.Warning">기간 외</MudChip>
+                            }
+                        </td>
+                        <td class="small">
+                            @FormatPeriod(item)
+                        </td>
+                        <td>@item.SortOrder</td>
+                        <td>
+                            <MudButtonGroup Size="Size.Small" Variant="Variant.Outlined">
+                                <MudButton @onclick="@(() => Navigation.NavigateTo($"/taxbaik/admin/announcements/{item.Id}/edit"))">
+                                    수정
+                                </MudButton>
+                                <MudButton Color="Color.Error" @onclick="@(() => DeleteAsync(item))">
+                                    삭제
+                                </MudButton>
+                            </MudButtonGroup>
+                        </td>
+                    </tr>
+                }
+            </tbody>
+        </MudSimpleTable>
+    }
+</MudPaper>
+
+@code {
+    private List<Announcement>? announcements;
+
+    protected override async Task OnInitializedAsync()
+    {
+        await LoadAsync();
+    }
+
+    private async Task LoadAsync()
+    {
+        announcements = (await AnnouncementService.GetAllAsync()).ToList();
+    }
+
+    private async Task DeleteAsync(Announcement item)
+    {
+        var confirmed = await DialogService.ShowMessageBox(
+            "공지 삭제",
+            $"'{item.Title}' 공지를 삭제하시겠습니까?",
+            yesText: "삭제", cancelText: "취소");
+
+        if (confirmed != true) return;
+
+        await AnnouncementService.DeleteAsync(item.Id);
+        Snackbar.Add("공지사항이 삭제되었습니다.", Severity.Success);
+        await LoadAsync();
+    }
+
+    private static bool IsCurrentlyActive(Announcement a)
+    {
+        if (!a.IsActive) return false;
+        var now = DateTime.UtcNow;
+        if (a.StartsAt.HasValue && a.StartsAt > now) return false;
+        if (a.EndsAt.HasValue   && a.EndsAt   < now) return false;
+        return true;
+    }
+
+    private static string FormatPeriod(Announcement a)
+    {
+        var start = a.StartsAt?.ToLocalTime().ToString("MM/dd") ?? "즉시";
+        var end   = a.EndsAt?.ToLocalTime().ToString("MM/dd")   ?? "무기한";
+        return $"{start} ~ {end}";
+    }
+
+    private static Color GetTypeColor(string type) => type switch
+    {
+        "urgent" => Color.Error,
+        "banner" => Color.Warning,
+        _        => Color.Info
+    };
+
+    private static string GetTypeLabel(string type) => type switch
+    {
+        "urgent" => "긴급",
+        "banner" => "배너",
+        _        => "일반"
+    };
+}

TaxBaik.Web/Components/Admin/Pages/Blog/BlogList.razor

@@ -5,20 +5,24 @@
 
 <PageTitle>블로그 관리</PageTitle>
 
-<div class="mb-4 d-flex justify-content-between align-items-center">
-    <MudText Typo="Typo.h5">📝 블로그 관리</MudText>
-    <MudButton Variant="Variant.Filled" Color="Color.Primary"
-        Href="/taxbaik/admin/blog/create">새 포스트</MudButton>
-</div>
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">Content</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">블로그 관리</MudText>
+        <MudText Typo="Typo.body2" Class="admin-page-subtitle">검색 유입 콘텐츠의 발행 상태와 성과를 관리합니다.</MudText>
+    </div>
+    <MudButton Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.EditNote"
+        Href="/taxbaik/admin/blog/create">새 포스트 작성</MudButton>
+</section>
 
-<MudPaper Class="pa-4 mb-4" Elevation="1">
+<MudPaper Class="admin-surface mb-4" Elevation="0">
     <MudStack Row="true" AlignItems="AlignItems.Center" Justify="Justify.SpaceBetween">
         <MudText Typo="Typo.subtitle1">@($"전체 포스트 {totalPosts}개")</MudText>
         <MudText Typo="Typo.body2">페이지 @currentPage / @totalPages</MudText>
     </MudStack>
 </MudPaper>
 
-<MudDataGrid Items="@posts" Striped="true" Hoverable="true" Loading="@isLoading">
+<MudDataGrid Items="@posts" Striped="true" Hoverable="true" Loading="@isLoading" Class="admin-grid">
     <Columns>
         <PropertyColumn Property="x => x.Title" Title="제목" />
         <PropertyColumn Property="x => x.IsPublished" Title="발행">
@@ -31,9 +35,9 @@
         <PropertyColumn Property="x => x.CreatedAt" Title="작성일" Format="yyyy-MM-dd" />
         <TemplateColumn>
             <CellTemplate Context="cell">
-                <MudButton Variant="Variant.Text" Color="Color.Primary"
-                    Href="@($"/taxbaik/admin/blog/{cell.Item.Id}/edit")">수정</MudButton>
-                <MudButton Variant="Variant.Text" Color="Color.Error"
+                <MudButton Variant="Variant.Outlined" Size="Size.Small" Color="Color.Primary"
+                    Href="@($"/taxbaik/admin/blog/{cell.Item.Id}/edit")">수정하기</MudButton>
+                <MudButton Variant="Variant.Text" Size="Size.Small" Color="Color.Error"
                     @onclick="@(async () => await DeletePost(cell.Item.Id))">삭제</MudButton>
             </CellTemplate>
         </TemplateColumn>

TaxBaik.Web/Components/Admin/Pages/Dashboard.razor

@@ -5,41 +5,60 @@
 
 <PageTitle>대시보드</PageTitle>
 
-<h1 class="mb-4">대시보드</h1>
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">Overview</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">대시보드</MudText>
+        <MudText Typo="Typo.body2" Class="admin-page-subtitle">문의 흐름과 콘텐츠 상태를 한 화면에서 확인합니다.</MudText>
+    </div>
+    <MudButton Variant="Variant.Filled" Color="Color.Primary" StartIcon="@Icons.Material.Filled.Add" Href="/taxbaik/admin/blog/create">
+        새 포스트 작성
+    </MudButton>
+</section>
 
-<MudGrid>
+<MudGrid Class="admin-metric-grid">
     <MudItem xs="12" sm="6" md="3">
-        <MudPaper Class="pa-4" Elevation="1">
-            <MudText Typo="Typo.subtitle2">이번달 문의</MudText>
-            <MudText Typo="Typo.h4">@summary.ThisMonthInquiries</MudText>
+        <MudPaper Class="admin-metric-card accent-blue" Elevation="0">
+            <MudText Typo="Typo.caption">이번달 문의</MudText>
+            <MudText Typo="Typo.h3">@summary.ThisMonthInquiries</MudText>
+            <MudText Typo="Typo.body2">월간 상담 유입</MudText>
         </MudPaper>
     </MudItem>
 
     <MudItem xs="12" sm="6" md="3">
-        <MudPaper Class="pa-4" Elevation="1">
-            <MudText Typo="Typo.subtitle2">신규 문의</MudText>
-            <MudText Typo="Typo.h4">@summary.NewInquiries</MudText>
+        <MudPaper Class="admin-metric-card accent-amber" Elevation="0">
+            <MudText Typo="Typo.caption">신규 문의</MudText>
+            <MudText Typo="Typo.h3">@summary.NewInquiries</MudText>
+            <MudText Typo="Typo.body2">처리 대기</MudText>
         </MudPaper>
     </MudItem>
 
     <MudItem xs="12" sm="6" md="3">
-        <MudPaper Class="pa-4" Elevation="1">
-            <MudText Typo="Typo.subtitle2">전체 포스트</MudText>
-            <MudText Typo="Typo.h4">@summary.TotalPosts</MudText>
+        <MudPaper Class="admin-metric-card accent-slate" Elevation="0">
+            <MudText Typo="Typo.caption">전체 포스트</MudText>
+            <MudText Typo="Typo.h3">@summary.TotalPosts</MudText>
+            <MudText Typo="Typo.body2">콘텐츠 자산</MudText>
         </MudPaper>
     </MudItem>
 
     <MudItem xs="12" sm="6" md="3">
-        <MudPaper Class="pa-4" Elevation="1">
-            <MudText Typo="Typo.subtitle2">발행된 포스트</MudText>
-            <MudText Typo="Typo.h4">@summary.PublishedPosts</MudText>
+        <MudPaper Class="admin-metric-card accent-green" Elevation="0">
+            <MudText Typo="Typo.caption">발행된 포스트</MudText>
+            <MudText Typo="Typo.h3">@summary.PublishedPosts</MudText>
+            <MudText Typo="Typo.body2">검색 노출 대상</MudText>
         </MudPaper>
     </MudItem>
 </MudGrid>
 
-<MudPaper Class="pa-4 mt-4" Elevation="1">
-    <MudText Typo="Typo.h6" Class="mb-3">최근 문의</MudText>
-    <MudSimpleTable Striped="true" Dense="true">
+<MudPaper Class="admin-surface mt-4" Elevation="0">
+    <div class="admin-section-header">
+        <div>
+            <MudText Typo="Typo.h6">최근 문의</MudText>
+            <MudText Typo="Typo.body2">최근 유입된 상담 요청을 빠르게 확인합니다.</MudText>
+        </div>
+        <MudButton Variant="Variant.Outlined" Color="Color.Primary" Href="/taxbaik/admin/inquiries">문의 전체 보기</MudButton>
+    </div>
+    <MudSimpleTable Striped="true" Dense="true" Class="admin-table">
         <thead>
             <tr>
                 <th>이름</th>
@@ -59,7 +78,7 @@
                     <td>
                         <MudChip Size="Size.Small"
                             Color="@(inquiry.Status == "new" ? Color.Warning : inquiry.Status == "contacted" ? Color.Info : Color.Success)">
-                            @inquiry.Status
+                            @GetStatusLabel(inquiry.Status)
                         </MudChip>
                     </td>
                     <td>@inquiry.CreatedAt.ToString("yyyy-MM-dd")</td>
@@ -75,5 +94,13 @@
     protected override async Task OnInitializedAsync()
     {
         summary = await DashboardService.GetSummaryAsync();
-    }
+}
+
+    private static string GetStatusLabel(string status) => status switch
+    {
+        "new" => "신규",
+        "contacted" => "연락함",
+        "completed" => "완료",
+        _ => status
+    };
 }

TaxBaik.Web/Components/Admin/Pages/Inquiries/InquiryList.razor

@@ -5,9 +5,16 @@
 
 <PageTitle>문의 관리</PageTitle>
 
-<MudText Typo="Typo.h5" Class="mb-4">💬 문의 관리</MudText>
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">Customer Requests</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">문의 관리</MudText>
+        <MudText Typo="Typo.body2" Class="admin-page-subtitle">상담 요청을 상태별로 확인하고 후속 조치를 기록합니다.</MudText>
+    </div>
+</section>
 
-<MudTabs>
+<MudPaper Class="admin-surface" Elevation="0">
+<MudTabs Rounded="true" Elevation="0" Class="admin-tabs">
     <MudTabPanel Text="전체">
         <InquiryTable Status="" />
     </MudTabPanel>
@@ -21,3 +28,4 @@
         <InquiryTable Status="completed" />
     </MudTabPanel>
 </MudTabs>
+</MudPaper>

TaxBaik.Web/Components/Admin/Pages/Login.razor

@@ -5,6 +5,7 @@
 @inject IApiClient ApiClient
 @inject NavigationManager NavigationManager
 @inject CustomAuthenticationStateProvider AuthStateProvider
+@inject IJSRuntime Js
 
 <PageTitle>로그인</PageTitle>
 
@@ -58,6 +59,12 @@
 
     private LoginModel model = new();
 
+    protected override async Task OnAfterRenderAsync(bool firstRender)
+    {
+        if (firstRender)
+            await Js.InvokeVoidAsync("taxbaikAdminSession.syncRouteClass");
+    }
+
     private async Task HandleLogin()
     {
         if (isLoading)

TaxBaik.Web/Components/Admin/Pages/Settings/SiteSettings.razor

@@ -9,9 +9,23 @@
 
 <PageTitle>설정</PageTitle>
 
-<MudText Typo="Typo.h5" Class="mb-4">⚙️ 사이트 설정</MudText>
+<section class="admin-page-hero">
+    <div>
+        <MudText Typo="Typo.caption" Class="admin-eyebrow">System</MudText>
+        <MudText Typo="Typo.h4" Class="admin-page-title">설정</MudText>
+        <MudText Typo="Typo.body2" Class="admin-page-subtitle">공개 사이트 연락처와 관리자 계정 보안을 관리합니다.</MudText>
+    </div>
+</section>
 
-<MudPaper Class="pa-4" Elevation="1">
+<MudGrid>
+    <MudItem xs="12" md="7">
+<MudPaper Class="admin-surface" Elevation="0">
+    <div class="admin-section-header compact">
+        <div>
+            <MudText Typo="Typo.h6">사이트 정보</MudText>
+            <MudText Typo="Typo.body2">홈페이지와 문의 알림에 노출되는 기본 정보입니다.</MudText>
+        </div>
+    </div>
     <MudForm>
         <MudTextField @bind-Value="phone" Label="전화번호"
             Variant="Variant.Outlined" Class="mb-4" />
@@ -26,12 +40,20 @@
             Variant="Variant.Outlined" Class="mb-4" />
 
         <MudButton Variant="Variant.Filled" Color="Color.Primary"
-            @onclick="SaveSettings">저장</MudButton>
+            StartIcon="@Icons.Material.Filled.Save"
+            @onclick="SaveSettings">사이트 정보 저장</MudButton>
     </MudForm>
 </MudPaper>
+    </MudItem>
 
-<MudPaper Class="pa-4 mt-4" Elevation="1">
-    <MudText Typo="Typo.h6" Class="mb-4">계정 관리</MudText>
+    <MudItem xs="12" md="5">
+<MudPaper Class="admin-surface admin-account-card" Elevation="0">
+    <div class="admin-section-header compact">
+        <div>
+            <MudText Typo="Typo.h6">계정 관리</MudText>
+            <MudText Typo="Typo.body2">비밀번호는 12자 이상으로 관리합니다.</MudText>
+        </div>
+    </div>
 
     <MudForm>
         <MudTextField @bind-Value="currentPassword" Label="현재 비밀번호" InputType="InputType.Password"
@@ -45,11 +67,14 @@
 
         <MudButton Variant="Variant.Filled" Color="Color.Primary"
             Disabled="@isChangingPassword"
+            StartIcon="@Icons.Material.Filled.LockReset"
             @onclick="ChangePassword">
             @(isChangingPassword ? "변경 중..." : "비밀번호 변경")
         </MudButton>
     </MudForm>
 </MudPaper>
+    </MudItem>
+</MudGrid>
 
 @code {
     private string phone = "010-4122-8268";