diff --git a/style/style.css b/style/style.css
index a59542c..1e08b79 100644
--- a/style/style.css
+++ b/style/style.css
@@ -1,412 +1,123 @@
 :root {
-    --primary-color: #1E5149;
-    --bg-color: #FFFFFF;
-    --text-main: #222222;
-    --text-sub: #666666;
-    --border-color: #E5E7EB;
-    /* 매우 연한 회색 라인 */
-    --hover-bg: #F9FAFB;
+    /* Design Tokens */
+    --primary-color: #1E5149; --primary-lv-0: #e9eeed; --primary-lv-1: #D2DCDB; --primary-lv-8: #193833;
+    --bg-default: #FFFFFF; --bg-muted: #F9FAFB;
+    --text-main: #2D3748; --text-sub: #718096; --border-color: #E2E8F0;
+    --header-gradient: linear-gradient(90deg, #193833 0%, #1e5149 100%);
+    --ai-gradient: linear-gradient(180deg, #da8cf1 0%, #8bb1f2 100%);
+    --space-xs: 4px; --space-sm: 8px; --space-md: 16px; --space-lg: 32px; --space-xl: 64px;
+    --radius-sm: 4px; --radius-lg: 8px;
+    --fz-h1: 20px; --fz-h2: 16px; --fz-body: 13px;
 }
 
-* {
-    margin: 0;
-    padding: 0;
-    box-sizing: border-box;
-}
+/* Base Reset */
+* { margin: 0; padding: 0; box-sizing: border-box; }
+body { font-family: 'Pretendard', sans-serif; font-size: var(--fz-body); color: var(--text-main); background: var(--bg-default); min-height: 100vh; }
+a { text-decoration: none; color: inherit; }
+button { cursor: pointer; border: none; font-family: inherit; }
 
-body {
-    font-family: 'Pretendard', sans-serif;
-    font-size: 13px;
-    color: var(--text-main);
-    background-color: var(--bg-color);
-    display: flex;
-    min-height: 100vh;
-}
+/* Components: Topbar */
+.topbar { width: 100%; background: var(--header-gradient); color: #fff; padding: 0 var(--space-lg); position: fixed; top: 0; height: 36px; display: flex; align-items: center; z-index: 1000; }
+.topbar-header { margin-right: 60px; font-weight: 700; }
+.nav-list { display: flex; list-style: none; gap: var(--space-sm); }
+.nav-item { padding: 4px 8px; border-radius: 4px; color: rgba(255,255,255,0.8); transition: 0.2s; font-size: 14px; }
+.nav-item:hover { background: var(--primary-lv-1); color: #fff; }
+.nav-item.active { background: var(--primary-lv-0); color: var(--primary-color) !important; font-weight: 700; }
 
-/* Topbar */
-.topbar {
-    width: 100%;
-    background-color: #1E5149;
-    /* sample.png 탑바 다크 슬레이트 배경색 */
-    color: #FFFFFF;
-    padding: 0 1.5rem;
-    position: fixed;
-    top: 0;
-    left: 0;
-    height: 36px;
-    display: flex;
-    align-items: center;
-    z-index: 100;
-}
+/* Global Layout */
+.main-content { margin-top: 36px; padding: var(--space-lg) var(--space-xl); max-width: 1400px; margin-left: auto; margin-right: auto; }
+header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: var(--space-lg); padding-bottom: var(--space-sm); border-bottom: 1px solid var(--border-color); }
+header h1 { font-size: var(--fz-h1); color: var(--primary-color); }
 
-.topbar-header {
-    margin-right: 2.5rem;
-}
+/* Portal (Index) */
+.portal-container { display: flex; flex-direction: column; align-items: center; justify-content: center; height: calc(100vh - 36px); background: var(--bg-muted); padding: var(--space-lg); }
+.portal-card { background: #fff; border: 1px solid var(--border-color); border-radius: 12px; padding: 40px; text-align: center; transition: 0.3s; width: 100%; max-width: 380px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
+.portal-card:hover { transform: translateY(-5px); border-color: var(--primary-color); box-shadow: 0 10px 20px rgba(0,0,0,0.1); }
+.portal-card .icon { font-size: 32px; margin-bottom: 20px; width: 64px; height: 64px; background: var(--bg-muted); border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: 0.3s; margin-left: auto; margin-right: auto; }
+.portal-card:hover .icon { background: var(--primary-color); color: #fff; }
 
-.topbar-header h2 {
-    font-size: 15px;
-    font-weight: 600;
-    letter-spacing: -0.3px;
-}
+/* Dashboard List & Console */
+.log-console { background:#000; color:#0f0; font-family:monospace; padding:15px; margin-bottom:20px; border-radius:4px; max-height:200px; overflow-y:auto; font-size:12px; }
+.accordion-container { border-top: 1px solid var(--border-color); }
+.accordion-list-header, .accordion-header { display: grid; grid-template-columns: 2.5fr 1fr 1fr 0.8fr 2fr; gap: var(--space-md); padding: var(--space-md) var(--space-lg); align-items: center; }
+.accordion-list-header { font-size: 11px; font-weight: 700; color: var(--text-sub); border-bottom: 1px solid var(--text-main); }
+.accordion-item { border-bottom: 1px solid var(--border-color); }
+.accordion-item:hover { background: var(--primary-lv-0); }
+.repo-title { font-weight: 700; color: var(--primary-color); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.repo-files { text-align: center; font-weight: 600; }
+.repo-log { font-size: 11px; color: var(--text-sub); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
+.accordion-body { display: none; padding: var(--space-lg); background: var(--bg-muted); border-top: 1px solid var(--border-color); }
+.accordion-item.active .accordion-body { display: block; }
+.status-warning { background: #fff9e6; } .status-error { background: #fee9e7; }
+.warning-text { color: #f21d0d !important; font-weight: 700; }
 
-.nav-list {
-    list-style: none;
-    display: flex;
-    align-items: center;
-    height: 100%;
-}
+/* Mail Manager Refined */
+.mail-wrapper { display: flex; height: calc(100vh - 36px); margin-top: 36px; background: #fff; overflow: hidden; }
+.mail-sidebar { width: 240px; border-right: 1px solid var(--border-color); padding: var(--space-md); background: var(--bg-muted); }
+.project-select { width: 100%; padding: var(--space-sm); border-radius: var(--radius-sm); border: 1px solid var(--border-color); margin-bottom: var(--space-lg); font-weight: 700; background: #fff; }
+.folder-item { padding: var(--space-sm) var(--space-md); border-radius: 4px; cursor: pointer; margin-bottom: 2px; font-weight: 500; display: flex; justify-content: space-between; }
+.folder-item:hover { background: var(--primary-lv-0); }
+.folder-item.active { background: var(--primary-color); color: #fff; }
 
-.nav-item {
-    padding: 0 1rem;
-    height: 28px;
-    border-radius: 4px;
-    margin: 0 2px;
-    cursor: pointer;
-    transition: all 0.2s;
-    color: rgba(255, 255, 255, 0.7);
-    display: flex;
-    justify-content: center;
-    align-items: center;
-    gap: 6px;
-    font-size: 13px;
-}
+.mail-list-area { width: 380px; border-right: 1px solid var(--border-color); display: flex; flex-direction: column; }
+.search-bar { padding: var(--space-md); border-bottom: 1px solid var(--border-color); background: var(--bg-muted); }
+.search-bar input { width: 100%; padding: 8px; border-radius: 4px; border: 1px solid var(--border-color); margin-bottom: var(--space-sm); }
+.mail-item { padding: var(--space-md); border-bottom: 1px solid var(--border-color); cursor: pointer; transition: 0.2s; }
+.mail-item:hover { background: var(--bg-muted); }
+.mail-item.active { background: #E9EEED; border-left: 4px solid var(--primary-color); }
 
-.nav-item:hover,
-.nav-item.active {
-    background-color: #E9EEED;
-    color: #1E5149;
-    font-weight: 500;
-}
+.mail-content-area { flex: 1; display: flex; flex-direction: column; overflow-y: auto; }
+.mail-content-header { padding: var(--space-lg); border-bottom: 1px solid var(--border-color); }
+.mail-body { padding: var(--space-lg); line-height: 1.6; min-height: 200px; }
 
-/* Main Content */
-.main-content {
-    margin-top: 36px;
-    flex: 1;
-    padding: 2rem 2.5rem;
-    width: 100%;
-    max-width: 1400px;
-    margin-left: auto;
-    margin-right: auto;
-}
+.attachment-area { padding: var(--space-lg); border-top: 1px solid var(--border-color); background: var(--bg-muted); }
+.attachment-item { display: flex; align-items: center; justify-content: space-between; background: #fff; padding: var(--space-sm) var(--space-md); border-radius: var(--radius-lg); border: 1px solid var(--border-color); margin-bottom: var(--space-sm); }
+.file-info { display: flex; align-items: center; gap: var(--space-sm); flex: 1; }
+.ai-recommend { font-size: 11px; color: #6d3dc2; background: #f1ecf9; padding: 2px 6px; border-radius: 4px; font-weight: 700; margin-left: 10px; }
 
-header {
-    margin-bottom: 2rem;
-    display: flex;
-    justify-content: space-between;
-    align-items: flex-end;
-    padding-bottom: 0.8rem;
-    border-bottom: 1px solid var(--border-color);
-    /* 선 굵기와 색상 얇게 */
-}
-
-header h1 {
-    font-size: 18px;
-    font-weight: 700;
-    color: var(--primary-color);
-}
-
-.admin-info {
-    color: var(--text-sub);
-    font-size: 12px;
-}
-
-/* Multi-level Accordion (Minimalist/No Box Design) */
-.continent-group {
-    margin-bottom: 3rem;
-}
-
-.continent-header {
-    color: var(--text-main);
-    padding: 0.5rem 0;
-    font-size: 16px;
-    font-weight: 700;
-    cursor: pointer;
-    display: flex;
-    justify-content: flex-start;
-    align-items: center;
-    border-bottom: 2px solid var(--text-main);
-    margin-bottom: 1rem;
-}
-
-.continent-body {
-    display: none;
-}
-
-.continent-group.active > .continent-body {
-    display: block;
-}
-
-.country-group {
-    margin-bottom: 2rem;
-    padding-bottom: 2rem;
-    border-bottom: 1px dashed var(--border-color); /* 국가 사이 구분선 */
-}
-
-.country-group:last-child {
-    margin-bottom: 1rem;
-    padding-bottom: 0;
-    border-bottom: none;
-}
-
-.country-header {
-    color: var(--primary-color);
-    padding: 0.5rem 0;
-    font-size: 14px;
-    font-weight: 700;
-    cursor: pointer;
-    display: flex;
-    justify-content: flex-start;
-    align-items: center;
-    margin-bottom: 0.5rem;
-}
-
-.country-body {
-    display: none;
-    padding-left: 0.5rem; /* Slight indent instead of borders */
-}
-
-.country-group.active > .country-body {
-    display: block;
-}
-
-.toggle-icon {
-    font-size: 10px;
-    margin-left: 8px;
-    color: #999;
-}
-
-/* Accordion Styles (Projects - Row Based) */
-.accordion-container {
-    display: flex;
-    flex-direction: column;
-    width: 100%;
-}
-
-.accordion-item {
-    border-bottom: 1px solid var(--border-color);
-}
-
-.accordion-item:last-child {
-    border-bottom: none;
-}
-
-.accordion-header {
-    display: grid;
-    grid-template-columns: 2.5fr 1fr 1fr 1fr 1fr 2fr;
-    gap: 1rem;
-    padding: 1rem 0;
-    cursor: pointer;
-    align-items: center;
-    background-color: transparent;
-    transition: opacity 0.2s;
-}
-
-.accordion-item:hover .accordion-header {
-    opacity: 0.7;
-}
-
-.accordion-item.active .accordion-header {
-    /* No border-bottom or background change for active */
-}
-
-.accordion-header > div {
-    white-space: nowrap;
-    overflow: hidden;
-    text-overflow: ellipsis;
-}
-
-.header-label {
+.ai-log-console {
+    margin-top: var(--space-md);
+    background: #1a202c; /* dark gray */
+    color: #a0aec0;
+    padding: var(--space-md);
+    border-radius: var(--radius-lg);
+    font-family: 'Courier New', Courier, monospace;
     font-size: 11px;
-    color: var(--text-sub);
-    margin-bottom: 3px;
-    display: block;
-    font-weight: 400;
+    line-height: 1.5;
+    max-height: 150px;
+    overflow-y: auto;
 }
+.ai-log-console .log-entry { margin-bottom: 4px; border-left: 2px solid #4a5568; padding-left: 8px; }
+.ai-log-console .highlight { color: #63b3ed; font-weight: 700; }
+.ai-log-console .success { color: #48bb78; }
 
-.header-value {
-    font-weight: 500;
-    font-size: 13px;
-    color: var(--text-main);
-}
+.btn-group { display: flex; gap: var(--space-xs); }
+.btn-upload { padding: 6px 12px; border-radius: 4px; font-size: 11px; font-weight: 700; color: #fff; }
+.btn-ai { background: var(--ai-gradient); }
+.btn-normal { background: var(--primary-color); }
+.btn-upload:hover { opacity: 0.9; transform: translateY(-1px); }
 
-.accordion-body {
-    display: none;
-    padding: 1.5rem 0;
-    background-color: transparent;
-}
+/* File-specific Log Accordion */
+.file-log-area { display: none; width: 100%; margin-top: 10px; background: #1a202c; border-radius: 4px; padding: 12px; font-family: monospace; font-size: 11px; color: #cbd5e0; }
+.file-log-area.active { display: block; }
+.log-line { margin-bottom: 2px; }
+.log-success { color: #48bb78; font-weight: 700; }
+.log-info { color: #63b3ed; }
 
-.accordion-item.active .accordion-body {
-    display: block;
-}
+/* Toggle Switch */
+.switch { position: relative; display: inline-block; width: 34px; height: 20px; }
+.switch input { opacity: 0; width: 0; height: 0; }
+.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #ccc; transition: .4s; border-radius: 20px; }
+.slider:before { position: absolute; content: ""; height: 14px; width: 14px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
+input:checked + .slider { background: var(--ai-gradient); }
+input:checked + .slider:before { transform: translateX(14px); }
 
-.detail-grid {
-    display: grid;
-    grid-template-columns: 1fr 1fr;
-    gap: 3rem;
-}
+.ai-toggle-wrap { display: flex; align-items: center; gap: var(--space-sm); font-size: 12px; font-weight: 600; color: var(--text-sub); }
+input:checked ~ .ai-label { color: #6d3dc2; }
 
-.detail-section h4 {
-    margin-bottom: 1rem;
-    color: var(--text-main);
-    font-size: 13px;
-    font-weight: 600;
-    border-bottom: 1px solid var(--border-color);
-    padding-bottom: 0.5rem;
-}
+/* Utils */
+.sync-btn { background: var(--primary-color); color: #fff; padding: 8px 16px; border-radius: var(--radius-lg); font-weight: 700; }
+.badge { background: #eee; padding: 2px 6px; border-radius: 4px; font-size: 11px; }
+.toggle-icon { transition: 0.2s; }
+.active > .continent-header .toggle-icon, .active > .country-header .toggle-icon { transform: rotate(180deg); }
 
-/* Table Styles - Super Minimal Line Style */
-.data-table {
-    width: 100%;
-    border-collapse: collapse;
-}
-
-.data-table th,
-.data-table td {
-    padding: 8px 4px;
-    border-bottom: 1px solid var(--border-color);
-    text-align: left;
-}
-
-.data-table th {
-    color: var(--text-sub);
-    font-weight: 400;
-    font-size: 12px;
-}
-
-.data-table td {
-    font-size: 12px;
-    color: var(--text-main);
-}
-
-.data-table tr:last-child td {
-    border-bottom: none;
-}
-
-/* General Utilities */
-.badge {
-    background: #EEEEEE;
-    color: #555555;
-    padding: 2px 6px;
-    border-radius: 2px;
-    /* 라운드 거의 없앰 */
-    font-size: 11px;
-    font-weight: 500;
-}
-
-.status-up {
-    color: #D32F2F;
-    font-weight: 500;
-}
-
-.status-down {
-    color: #1976D2;
-    font-weight: 500;
-}
-
-/* Sync Button */
-.sync-btn {
-    background-color: var(--primary-color);
-    color: #FFFFFF;
-    border: 1px solid var(--primary-color);
-    padding: 6px 14px;
-    border-radius: 4px;
-    font-size: 12px;
-    font-weight: 600;
-    cursor: pointer;
-    transition: background-color 0.2s, opacity 0.2s;
-    margin-right: 1rem;
-    display: flex;
-    align-items: center;
-    gap: 6px;
-}
-
-.sync-btn:hover {
-    background-color: #153A34;
-}
-
-.sync-btn:disabled {
-    background-color: #A0B2AF;
-    border-color: #A0B2AF;
-    cursor: not-allowed;
-}
-
-/* Spinner */
-.spinner {
-    display: none;
-    width: 12px;
-    height: 12px;
-    border: 2px solid rgba(255,255,255,0.3);
-    border-radius: 50%;
-    border-top-color: #fff;
-    animation: spin 1s ease-in-out infinite;
-}
-
-@keyframes spin {
-    to { transform: rotate(360deg); }
-}
-
-.sync-btn.loading .spinner {
-    display: inline-block;
-}
-
-/* --- Responsive Design --- */
-@media screen and (max-width: 1024px) {
-    .accordion-header {
-        grid-template-columns: 2fr 1fr 1fr 1fr 1fr 1.5fr;
-    }
-}
-
-@media screen and (max-width: 768px) {
-    .topbar {
-        overflow-x: auto;
-        white-space: nowrap;
-        padding: 0 1rem;
-    }
-    /* 스크롤바 숨김 */
-    .topbar::-webkit-scrollbar {
-        display: none; 
-    }
-    .main-content {
-        padding: 1.5rem 1rem;
-    }
-    header {
-        flex-direction: column;
-        align-items: flex-start;
-        gap: 0.5rem;
-    }
-    .detail-grid {
-        grid-template-columns: 1fr;
-        gap: 1.5rem;
-    }
-    /* 모바일에서 아코디언 헤더를 다단으로 배치 */
-    .accordion-header {
-        grid-template-columns: 1fr 1fr;
-        row-gap: 1rem;
-    }
-    /* 프로젝트 명과 최근 로그는 공간을 넓게 쓰도록 설정 */
-    .accordion-header > div:nth-child(1),
-    .accordion-header > div:nth-child(6) {
-        grid-column: span 2;
-    }
-    .continent-header {
-        font-size: 15px;
-    }
-}
-
-@media screen and (max-width: 480px) {
-    /* 아주 작은 화면에서는 1열로 배치 */
-    .accordion-header {
-        grid-template-columns: 1fr;
-    }
-    .accordion-header > div {
-        grid-column: span 1 !important;
-    }
-    .topbar-header h2 {
-        font-size: 13px;
-        margin-right: 1rem;
-    }
-    .nav-item {
-        padding: 0 0.5rem;
-        font-size: 12px;
-    }
-}
\ No newline at end of file