* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', Arial, sans-serif;
            display: flex;
            background: linear-gradient(135deg, #e8f4fc 0%, #f0f8ff 100%);
            min-height: 100vh;
        }

        /* 侧边栏样式 */
        .sidebar {
            width: 220px;
            background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
            height: 100vh;
            padding: 20px 15px;
            box-shadow: 2px 0 15px rgba(52, 152, 219, 0.1);
            display: flex;
            flex-direction: column;
            position: fixed;
            left: 0;
            top: 0;
        }

        .sidebar-header {
            text-align: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid #e8f4fc;
        }

        .sidebar-header .logo-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 10px;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
        }

        .sidebar-header .logo-icon i {
            color: #ffffff;
            font-size: 22px;
        }

        .sidebar-header h2 {
            font-size: 18px;
            color: #3498db;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 5px;
        }

        .sidebar-header .current-time {
            font-size: 11px;
            color: #a0b4c4;
        }

        .sidebar-menu {
            flex: 1;
            overflow-y: auto;
        }

        .menu-label {
            font-size: 10px;
            color: #a0b4c4;
            text-transform: uppercase;
            letter-spacing: 1px;
            padding: 10px 15px 5px;
            font-weight: 600;
        }

        .sidebar ul {
            list-style-type: none;
            margin-bottom: 10px;
        }

        .sidebar ul li {
            margin: 4px 0;
        }

        .sidebar ul li a {
            color: #5a6c7d;
            text-decoration: none;
            display: flex;
            align-items: center;
            padding: 10px 15px;
            border-radius: 8px;
            transition: all 0.3s ease;
            font-size: 13px;
        }

        .sidebar ul li a:hover {
            background: linear-gradient(135deg, #e8f4fc 0%, #d6eaf8 100%);
            color: #3498db;
            transform: translateX(3px);
        }

        .sidebar ul li a.active {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            font-weight: 500;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
        }

        .sidebar ul li a i {
            margin-right: 10px;
            font-size: 14px;
            width: 18px;
            text-align: center;
        }

        /* 快捷统计 */
        .quick-stats {
            display: flex;
            gap: 8px;
            padding: 0 10px;
            margin-bottom: 10px;
        }

        .stat-item {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .stat-item:hover {
            transform: translateY(-2px);
        }

        .stat-item.stat-valid {
            background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
        }

        .stat-item.stat-valid i {
            color: #28a745;
            font-size: 16px;
        }

        .stat-item.stat-invalid {
            background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
        }

        .stat-item.stat-invalid i {
            color: #dc3545;
            font-size: 16px;
        }

        .stat-item.stat-checking {
            background: linear-gradient(135deg, #fff3cd 0%, #ffeeba 100%);
        }

        .stat-item.stat-checking i {
            color: #ffc107;
            font-size: 16px;
        }

        .stat-item.stat-unchecked {
            background: linear-gradient(135deg, #e2e3e5 0%, #d6d8db 100%);
        }

        .stat-item.stat-unchecked i {
            color: #6c757d;
            font-size: 16px;
        }

        .stat-refresh {
            font-size: 10px;
            color: #3498db;
            cursor: pointer;
            margin-left: 5px;
            transition: all 0.3s ease;
        }

        .stat-refresh:hover {
            transform: rotate(180deg);
        }

        .stat-content {
            display: flex;
            flex-direction: column;
        }

        .stat-value {
            font-size: 16px;
            font-weight: 700;
            color: #2c3e50;
            line-height: 1;
        }

        .stat-label {
            font-size: 10px;
            color: #7f8c8d;
        }

        /* 分组快捷入口 */
        .quick-groups {
            padding: 0 10px;
            margin-bottom: 10px;
            max-height: 120px;
            overflow-y: auto;
        }

        .quick-group-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 8px 12px;
            background: #f8fbff;
            border-radius: 6px;
            margin-bottom: 5px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 12px;
        }

        .quick-group-item:hover {
            background: #e8f4fc;
            transform: translateX(3px);
        }

        .quick-group-item .group-name {
            color: #5a6c7d;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .quick-group-item .group-name i {
            color: #3498db;
            font-size: 12px;
        }

        .quick-group-item .group-badge {
            background: #3498db;
            color: #ffffff;
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 10px;
            font-weight: 600;
        }

        /* 快捷操作 */
        .quick-actions {
            display: flex;
            gap: 8px;
            padding: 0 10px;
            margin-bottom: 10px;
        }

        .quick-action-btn {
            flex: 1;
            padding: 10px;
            background: #f8fbff;
            border: 1px solid #e8f4fc;
            border-radius: 8px;
            cursor: pointer;
            color: #5a6c7d;
            font-size: 14px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .quick-action-btn:hover {
            background: #e8f4fc;
            color: #3498db;
            border-color: #3498db;
            transform: translateY(-2px);
        }

        /* 账号数量显示 */
        .sidebar-footer {
            padding: 15px;
            background: linear-gradient(135deg, #e8f4fc 0%, #d6eaf8 100%);
            border-radius: 10px;
            text-align: center;
            margin-top: auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
        }

        .sidebar-footer .account-info {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .sidebar-footer .account-info i {
            color: #3498db;
            font-size: 18px;
        }

        .sidebar-footer .account-label {
            font-size: 11px;
            color: #7f8c8d;
            margin-bottom: 3px;
        }

        .sidebar-footer .account-count {
            font-size: 26px;
            font-weight: 700;
            color: #3498db;
        }

        .theme-toggle {
            width: 28px;
            height: 28px;
            background: rgba(255, 255, 255, 0.8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

        .theme-toggle:hover {
            background: #ffffff;
            transform: rotate(20deg);
        }

        .theme-toggle i {
            color: #3498db;
            font-size: 12px;
        }

        /* 深色主题 */
        body.dark-theme {
            background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
        }

        body.dark-theme .sidebar {
            background: linear-gradient(180deg, #1a1a2e 0%, #16213e 100%);
            box-shadow: 2px 0 15px rgba(0, 0, 0, 0.3);
        }

        body.dark-theme .sidebar-header {
            border-bottom-color: #2a2a4a;
        }

        body.dark-theme .sidebar-header h2 {
            color: #5dade2;
        }

        body.dark-theme .menu-label {
            color: #6c7a89;
        }

        body.dark-theme .sidebar ul li a {
            color: #b0bec5;
        }

        body.dark-theme .sidebar ul li a:hover {
            background: linear-gradient(135deg, #2a2a4a 0%, #1f3a5f 100%);
            color: #5dade2;
        }

        body.dark-theme .stat-item.stat-valid {
            background: linear-gradient(135deg, #1e4620 0%, #2d5a2e 100%);
        }

        body.dark-theme .stat-item.stat-invalid {
            background: linear-gradient(135deg, #4a1c1c 0%, #5c2727 100%);
        }

        body.dark-theme .stat-item.stat-checking {
            background: linear-gradient(135deg, #4a4020 0%, #5c5027 100%);
        }

        body.dark-theme .stat-item.stat-unchecked {
            background: linear-gradient(135deg, #3a3a4a 0%, #4a4a5a 100%);
        }

        body.dark-theme .stat-value {
            color: #ecf0f1;
        }

        body.dark-theme .stat-refresh {
            color: #5dade2;
        }

        body.dark-theme .quick-group-item {
            background: #2a2a4a;
        }

        body.dark-theme .quick-group-item:hover {
            background: #1f3a5f;
        }

        body.dark-theme .quick-group-item .group-name {
            color: #b0bec5;
        }

        body.dark-theme .quick-action-btn {
            background: #2a2a4a;
            border-color: #3a3a5a;
            color: #b0bec5;
        }

        body.dark-theme .quick-action-btn:hover {
            background: #1f3a5f;
            color: #5dade2;
            border-color: #5dade2;
        }

        body.dark-theme .sidebar-footer {
            background: linear-gradient(135deg, #2a2a4a 0%, #1f3a5f 100%);
        }

        body.dark-theme .sidebar-footer .account-label {
            color: #6c7a89;
        }

        body.dark-theme .sidebar-footer .account-count {
            color: #5dade2;
        }

        body.dark-theme .theme-toggle {
            background: rgba(0, 0, 0, 0.3);
        }

        body.dark-theme .theme-toggle i {
            color: #f1c40f;
        }

        body.dark-theme .content {
            background: transparent;
        }

        body.dark-theme .content h1 {
            color: #ecf0f1;
        }

        body.dark-theme .toolbar {
            background: #1a1a2e;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        }

        body.dark-theme .toolbar .search-box {
            background: #2a2a4a;
            border-color: #3a3a5a;
        }

        body.dark-theme .toolbar .search-box input {
            color: #ecf0f1;
        }

        body.dark-theme .toolbar .group-select {
            background: #2a2a4a;
            border-color: #3a3a5a;
            color: #b0bec5;
        }

        body.dark-theme .email-table {
            background: #1a1a2e;
        }

        body.dark-theme .email-table th {
            background: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
        }

        body.dark-theme .email-table td {
            color: #b0bec5;
            border-bottom-color: #2a2a4a;
        }

        body.dark-theme .email-table tbody tr:hover {
            background: linear-gradient(135deg, #2a2a4a 0%, #1f3a5f 100%);
        }

        body.dark-theme .no-data {
            background: #1a1a2e;
            color: #6c7a89;
        }

        body.dark-theme .pagination button {
            background: #2a2a4a;
            border-color: #3a3a5a;
            color: #b0bec5;
        }

        body.dark-theme .pagination button:hover:not(.active) {
            background: #1f3a5f;
            color: #5dade2;
        }

        body.dark-theme #items-per-page {
            background: #2a2a4a;
            border-color: #3a3a5a;
            color: #b0bec5;
        }

        body.dark-theme .group-management {
            background: #1a1a2e;
        }

        body.dark-theme .group-item {
            border-color: #2a2a4a;
        }

        body.dark-theme .group-item:hover {
            background: #2a2a4a;
        }

        body.dark-theme .group-item .group-name {
            color: #ecf0f1;
        }

        body.dark-theme .add-group-form {
            background: #16213e;
            border-top-color: #2a2a4a;
        }

        body.dark-theme .add-group-form input {
            background: #2a2a4a;
            border-color: #3a3a5a;
            color: #ecf0f1;
        }

        /* 内容区域样式 */
        .content {
            flex-grow: 1;
            padding: 25px 30px;
            margin-left: 220px;
            min-height: 100vh;
        }

        .content h1 {
            color: #2c3e50;
            margin-bottom: 20px;
            font-size: 24px;
            font-weight: 600;
        }

        .content-section {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .content-section.active {
            display: block;
        }

        #emails.content-section.active {
            display: flex;
            flex-direction: column;
            min-height: calc(100vh - 50px);
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* 工具栏样式 */
        .toolbar {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 20px;
            flex-wrap: wrap;
            background: #ffffff;
            padding: 15px 20px;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(52, 152, 219, 0.08);
        }

        .toolbar .search-box {
            display: flex;
            align-items: center;
            background: #f8fbff;
            border: 1px solid #d6eaf8;
            border-radius: 8px;
            padding: 0 12px;
            flex: 1;
            max-width: 300px;
            transition: all 0.3s ease;
        }

        .toolbar .search-box:focus-within {
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }

        .toolbar .search-box i {
            color: #a0b4c4;
            font-size: 14px;
        }

        .toolbar .search-box input {
            border: none;
            background: transparent;
            padding: 10px;
            flex: 1;
            font-size: 14px;
            color: #2c3e50;
            outline: none;
        }

        .toolbar .search-box input::placeholder {
            color: #a0b4c4;
        }

        .toolbar .group-select {
            padding: 10px 15px;
            border: 1px solid #d6eaf8;
            border-radius: 8px;
            background: #f8fbff;
            color: #5a6c7d;
            font-size: 14px;
            cursor: pointer;
            outline: none;
            transition: all 0.3s ease;
        }

        .toolbar .group-select:focus {
            border-color: #3498db;
        }

        .toolbar-btn {
            padding: 10px 18px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 13px;
            font-weight: 500;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 6px;
            white-space: nowrap;
        }

        .toolbar-btn i {
            font-size: 14px;
        }

        /* btn-compact removed — all toolbar buttons use uniform sizing */

        .btn-primary {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            box-shadow: 0 4px 12px rgba(52, 152, 219, 0.25);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(52, 152, 219, 0.35);
        }

        .btn-secondary {
            background: #ffffff;
            color: #3498db;
            border: 1px solid #d6eaf8;
        }

        .btn-secondary:hover {
            background: #f8fbff;
            border-color: #3498db;
        }

        .btn-danger {
            background: linear-gradient(135deg, #e74c3c 0%, #ec7063 100%);
            color: #ffffff;
        }

        .btn-danger:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(231, 76, 60, 0.35);
        }

        /* 表格样式 */
        .email-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background-color: #ffffff;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 15px rgba(52, 152, 219, 0.08);
        }

        #emails .email-table {
            margin-top: 0;
        }

        .email-table th,
        .email-table td {
            padding: 14px 16px;
            text-align: left;
            font-size: 13px;
            color: #5a6c7d;
        }

        .email-table th {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            font-weight: 500;
            text-transform: uppercase;
            font-size: 12px;
            letter-spacing: 0.5px;
        }

        .email-table tbody tr {
            border-bottom: 1px solid #f0f8ff;
            transition: all 0.2s ease;
        }

        .email-table tbody tr:hover {
            background: linear-gradient(135deg, #f8fbff 0%, #e8f4fc 100%);
        }

        .email-table tbody tr:last-child {
            border-bottom: none;
        }

        .email-table .id-col {
            width: 50px;
            text-align: center;
            color: #a0b4c4;
            font-weight: 500;
        }

        .email-table .token-status {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
        }

        .email-table .token-valid {
            background: #d4edda;
            color: #155724;
        }

        .email-table .token-checking {
            background: #fff3cd;
            color: #856404;
        }

        .email-table .token-invalid {
            background: #f8d7da;
            color: #721c24;
        }

        .email-table .permission-type {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            padding: 4px 10px;
            border-radius: 20px;
            font-size: 12px;
            background: #e8f4fc;
            color: #3498db;
        }

        .email-table .group-tag {
            display: inline-block;
            padding: 4px 10px;
            background: linear-gradient(135deg, #e8f4fc 0%, #d6eaf8 100%);
            color: #3498db;
            border-radius: 20px;
            font-size: 12px;
        }

        .email-table .actions {
            white-space: nowrap;
        }

        .email-table .actions button {
            padding: 6px 14px;
            margin-right: 5px;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s ease;
        }

        .email-table .actions button.view {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
        }

        .email-table .actions button.view:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 10px rgba(52, 152, 219, 0.3);
        }

        .email-table .actions button.renew {
            background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
            color: #ffffff;
        }

        .email-table .actions button.renew:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 10px rgba(39, 174, 96, 0.3);
        }

        .email-table .actions button.check {
            background: linear-gradient(135deg, #f39c12 0%, #f1c40f 100%);
            color: #ffffff;
        }

        .email-table .actions button.check:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 10px rgba(243, 156, 18, 0.3);
        }

        .email-table .actions button.delete {
            background: linear-gradient(135deg, #e74c3c 0%, #ec7063 100%);
            color: #ffffff;
        }

        .email-table .actions button.delete:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 10px rgba(231, 76, 60, 0.3);
        }

        /* 分页样式 */
        .pagination-section {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 20px;
            gap: 15px;
        }

        #emails .pagination-section {
            margin-top: auto;
            padding-top: 16px;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .pagination-tools {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

        .pagination button {
            padding: 8px 14px;
            border: 1px solid #d6eaf8;
            border-radius: 6px;
            background-color: #ffffff;
            color: #5a6c7d;
            cursor: pointer;
            font-size: 13px;
            transition: all 0.3s ease;
        }

        .pagination button.active {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            border-color: transparent;
        }

        .pagination button:hover:not(.active) {
            background: #f8fbff;
            border-color: #3498db;
            color: #3498db;
        }

        #items-per-page {
            padding: 8px 15px;
            border: 1px solid #d6eaf8;
            border-radius: 6px;
            background-color: white;
            color: #5a6c7d;
            font-size: 13px;
            cursor: pointer;
            outline: none;
        }

        .page-jump {
            display: flex;
            align-items: center;
            gap: 8px;
            color: #7f8c8d;
            font-size: 13px;
            flex-wrap: wrap;
        }

        .page-jump input {
            width: 78px;
            height: 34px;
            padding: 0 10px;
            border: 1px solid #d6eaf8;
            border-radius: 6px;
            background-color: white;
            color: #2c3e50;
            font-size: 13px;
            outline: none;
        }

        .page-jump input:focus {
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.12);
        }

        .page-total {
            color: #95a5a6;
            font-size: 12px;
        }

        /* 无数据提示 */
        .no-data {
            text-align: center;
            padding: 18px 20px;
            color: #a0b4c4;
            font-size: 15px;
            background: #ffffff;
            border-radius: 12px;
            margin-top: 16px;
        }

        .no-data i {
            font-size: 28px;
            margin-bottom: 10px;
            display: block;
            color: #d6eaf8;
        }

        /* 模态框样式 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(44, 62, 80, 0.5);
            justify-content: center;
            align-items: center;
            z-index: 2000;
        }

        .modal-content {
            background-color: #ffffff;
            padding: 25px 30px;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(52, 152, 219, 0.2);
            max-width: 450px;
            width: 90%;
            text-align: center;
            animation: modalIn 0.3s ease;
        }

        @keyframes modalIn {
            from { opacity: 0; transform: scale(0.95); }
            to { opacity: 1; transform: scale(1); }
        }

        .modal-content h3 {
            margin: 0 0 15px;
            color: #2c3e50;
            font-size: 18px;
        }

        .modal-content p {
            color: #7f8c8d;
            font-size: 14px;
            line-height: 1.6;
            margin-bottom: 20px;
        }

        .modal-progress {
            display: none;
            margin: -6px 0 20px;
            text-align: left;
        }

        .modal-progress.active {
            display: block;
        }

        .modal-progress-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
            font-size: 12px;
            color: #5d6d7e;
        }

        .modal-progress-track {
            width: 100%;
            height: 10px;
            border-radius: 999px;
            background: #eaf4fb;
            overflow: hidden;
            border: 1px solid #d6eaf8;
        }

        .modal-progress-bar {
            width: 0;
            height: 100%;
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            transition: width 0.25s ease;
        }

        .modal-progress-note {
            margin-top: 8px;
            font-size: 12px;
            color: #7f8c8d;
            line-height: 1.5;
        }

        .modal-content.is-progress button {
            display: none;
        }

        .modal-content button {
            padding: 10px 25px;
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .modal-content button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(52, 152, 219, 0.35);
        }

        /* 导入弹窗样式 */
        .import-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(44, 62, 80, 0.5);
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .import-modal-content {
            background-color: #ffffff;
            padding: 0;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(52, 152, 219, 0.2);
            max-width: 550px;
            width: 90%;
            animation: modalIn 0.3s ease;
            overflow: hidden;
        }

        .import-modal-header {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            padding: 18px 25px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .import-modal-header h3 {
            margin: 0;
            font-size: 16px;
            font-weight: 500;
        }

        .import-modal-header .close-btn {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: #ffffff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .import-modal-header .close-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .import-tabs {
            display: flex;
            border-bottom: 1px solid #e8f4fc;
        }

        .import-tab {
            flex: 1;
            padding: 15px;
            text-align: center;
            cursor: pointer;
            color: #7f8c8d;
            font-size: 14px;
            transition: all 0.3s ease;
            border-bottom: 2px solid transparent;
        }

        .import-tab.active {
            color: #3498db;
            border-bottom-color: #3498db;
            background: #f8fbff;
        }

        .import-tab i {
            margin-right: 8px;
        }

        .import-tab-content {
            padding: 25px;
        }

        .import-panel {
            display: none;
        }

        .import-panel.active {
            display: block;
        }

        .import-panel textarea {
            width: 100%;
            height: 200px;
            padding: 15px;
            border: 1px solid #d6eaf8;
            border-radius: 10px;
            font-size: 13px;
            resize: vertical;
            outline: none;
            font-family: 'Consolas', monospace;
            line-height: 1.6;
            transition: all 0.3s ease;
        }

        .import-panel textarea:focus {
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }

        .import-panel .file-upload-area {
            border: 2px dashed #d6eaf8;
            border-radius: 10px;
            padding: 40px 20px;
            text-align: center;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .import-panel .file-upload-area:hover {
            border-color: #3498db;
            background: #f8fbff;
        }

        .import-panel .file-upload-area i {
            font-size: 40px;
            color: #3498db;
            margin-bottom: 15px;
        }

        .import-panel .file-upload-area p {
            color: #7f8c8d;
            font-size: 14px;
            margin: 0;
        }

        .import-panel .file-upload-area .file-name {
            margin-top: 10px;
            color: #3498db;
            font-weight: 500;
        }

        .import-hint {
            margin-top: 15px;
            padding: 12px;
            background: #f8fbff;
            border-radius: 8px;
            font-size: 12px;
            color: #7f8c8d;
            line-height: 1.6;
        }

        .import-hint code {
            background: #e8f4fc;
            padding: 2px 6px;
            border-radius: 4px;
            color: #3498db;
        }

        .import-actions {
            padding: 20px 25px;
            background: #f8fbff;
            display: flex;
            justify-content: flex-end;
            gap: 10px;
        }

        /* 邮件查看弹窗 */
        .mail-view-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(44, 62, 80, 0.5);
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .mail-view-content {
            background-color: #ffffff;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(52, 152, 219, 0.2);
            width: 95%;
            max-width: 1100px;
            height: 85vh;
            display: flex;
            flex-direction: column;
            animation: modalIn 0.3s ease;
            overflow: hidden;
            position: relative;
        }

        .mail-view-header {
            background: linear-gradient(135deg, #3498db 0%, #5dade2 100%);
            color: #ffffff;
            padding: 15px 25px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mail-view-header h3 {
            margin: 0;
            font-size: 16px;
            font-weight: 500;
        }

        .mail-view-header .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .mail-view-header .refresh-btn {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: #ffffff;
            padding: 8px 15px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }

        .mail-view-header .refresh-btn:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        .mail-view-header .close-btn {
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: #ffffff;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            cursor: pointer;
            font-size: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .mail-view-tabs {
            display: flex;
            background: #f8fbff;
            border-bottom: 1px solid #e8f4fc;
        }

        .mail-view-tab {
            padding: 15px 30px;
            cursor: pointer;
            color: #7f8c8d;
            font-size: 14px;
            transition: all 0.3s ease;
            border-bottom: 2px solid transparent;
        }

        .mail-view-tab.active {
            color: #3498db;
            border-bottom-color: #3498db;
            background: #ffffff;
        }

        .mail-view-tab i {
            margin-right: 8px;
        }

        .mail-view-body {
            display: flex;
            flex: 1;
            overflow: hidden;
        }

        .mail-list-panel {
            width: 350px;
            border-right: 1px solid #e8f4fc;
            overflow-y: auto;
            background: #f8fbff;
        }

        .mail-list-item {
            padding: 15px 18px;
            border-bottom: 1px solid #e8f4fc;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .mail-list-item:hover {
            background: #ffffff;
        }

        .mail-list-item.active {
            background: #ffffff;
            border-left: 3px solid #3498db;
        }

        .mail-list-item .mail-sender {
            font-weight: 500;
            color: #2c3e50;
            font-size: 13px;
            margin-bottom: 5px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mail-list-item .mail-subject {
            color: #5a6c7d;
            font-size: 12px;
            margin-bottom: 5px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .mail-list-item .mail-date {
            color: #a0b4c4;
            font-size: 11px;
        }

        .mail-content-panel {
            flex: 1;
            display: flex;
            flex-direction: column;
            overflow: hidden;
        }

        .mail-content-header {
            padding: 20px 25px;
            border-bottom: 1px solid #e8f4fc;
            background: #ffffff;
        }

        .mail-content-header h4 {
            margin: 0 0 10px;
            color: #2c3e50;
            font-size: 16px;
        }

        .mail-content-header .mail-meta {
            display: flex;
            gap: 20px;
            font-size: 12px;
            color: #7f8c8d;
        }

        .mail-content-body {
            flex: 1;
            padding: 25px;
            overflow-y: auto;
            background: #ffffff;
        }

        .mail-content-body .mail-text {
            color: #5a6c7d;
            font-size: 14px;
            line-height: 1.8;
        }

        .mail-empty {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100%;
            color: #a0b4c4;
        }

        .mail-empty i {
            font-size: 48px;
            margin-bottom: 15px;
            color: #d6eaf8;
        }

        /* 批量复制弹窗 */
        .copy-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(44, 62, 80, 0.5);
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }

        .copy-modal-content {
            background-color: #ffffff;
            padding: 25px 30px;
            border-radius: 16px;
            box-shadow: 0 10px 40px rgba(52, 152, 219, 0.2);
            max-width: 350px;
            width: 90%;
            animation: modalIn 0.3s ease;
        }

        .copy-modal-content h3 {
            margin: 0 0 20px;
            color: #2c3e50;
            font-size: 16px;
            text-align: center;
        }

        .copy-options {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .copy-option {
            padding: 12px 15px;
            background: #f8fbff;
            border: 1px solid #d6eaf8;
            border-radius: 8px;
            cursor: pointer;
            color: #5a6c7d;
            font-size: 14px;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .copy-option:hover {
            border-color: #3498db;
            background: #e8f4fc;
            color: #3498db;
        }

        .copy-option i {
            font-size: 16px;
        }

        /* 分组管理样式 */
        .group-management {
            background: #ffffff;
            border-radius: 12px;
            box-shadow: 0 2px 15px rgba(52, 152, 219, 0.08);
            overflow: hidden;
        }

        .group-list {
            padding: 20px;
        }

        .group-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 15px;
            border: 1px solid #e8f4fc;
            border-radius: 10px;
            margin-bottom: 10px;
            transition: all 0.3s ease;
        }

        .group-item:hover {
            border-color: #3498db;
            background: #f8fbff;
        }

        .group-item .group-info {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .group-item .group-icon {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, #e8f4fc 0%, #d6eaf8 100%);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #3498db;
            font-size: 18px;
        }

        .group-item .group-name {
            font-weight: 500;
            color: #2c3e50;
            font-size: 14px;
        }

        .group-item .group-count {
            font-size: 12px;
            color: #7f8c8d;
        }

        .group-item .group-actions {
            display: flex;
            gap: 8px;
        }

        .group-item .group-actions button {
            padding: 8px 12px;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.3s ease;
        }

        .group-item .group-actions .edit-btn {
            background: #e8f4fc;
            color: #3498db;
        }

        .group-item .group-actions .delete-btn {
            background: #fdeaea;
            color: #e74c3c;
        }

        .add-group-form {
            padding: 20px;
            border-top: 1px solid #e8f4fc;
            background: #f8fbff;
        }

        .add-group-form .form-row {
            display: flex;
            gap: 10px;
        }

        .add-group-form input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #d6eaf8;
            border-radius: 8px;
            font-size: 14px;
            outline: none;
            transition: all 0.3s ease;
        }

        .add-group-form input:focus {
            border-color: #3498db;
        }

        /* Loading 样式 */
        .loading-overlay {
            display: none;
            position: absolute;
            inset: 0;
            background-color: rgba(255, 255, 255, 0.9);
            justify-content: center;
            align-items: center;
            z-index: 2000;
            border-radius: 16px;
        }

        .loading-spinner {
            width: 50px;
            height: 50px;
            border: 3px solid #e8f4fc;
            border-top-color: #3498db;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* 复选框美化 */
        .email-table input[type="checkbox"] {
            width: 18px;
            height: 18px;
            cursor: pointer;
            accent-color: #3498db;
        }

        /* Token expiry indicators */
        .token-expiry {
            display: inline-block;
            padding: 2px 8px;
            border-radius: 10px;
            font-size: 11px;
            font-weight: 500;
        }
        .expiry-ok {
            background: #d4efdf;
            color: #27ae60;
        }
        .expiry-notice {
            background: #d5f5e3;
            color: #229954;
        }
        .expiry-warning {
            background: #fdebd0;
            color: #f39c12;
        }
        .expiry-danger {
            background: #fadbd8;
            color: #e74c3c;
        }
        .expiry-critical {
            background: #e74c3c;
            color: #fff;
            animation: blink 1s infinite;
        }
        @keyframes blink {
            50% { opacity: 0.5; }
        }

        /* ===== 深色主题 - 模态框 & 邮件查看器 ===== */

        /* 通用模态框 */
        body.dark-theme .modal-content {
            background: #1e2a3a;
            color: #e0e0e0;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        }

        body.dark-theme .modal-content h3 {
            color: #e0e0e0;
        }

        body.dark-theme .modal-content p {
            color: #b0b0b0;
        }

        body.dark-theme .modal-content button {
            background: linear-gradient(135deg, #2980b9 0%, #3498db 100%);
            color: #ffffff;
        }

        body.dark-theme .modal-progress-track {
            background: #1a1a2e;
            border-color: #2a2a4a;
        }

        body.dark-theme .modal-progress-meta {
            color: #b0b0b0;
        }

        body.dark-theme .modal-progress-note {
            color: #888;
        }

        /* 导入弹窗 */
        body.dark-theme .import-modal-content {
            background: #1e2a3a;
            color: #e0e0e0;
        }

        body.dark-theme .import-tabs {
            border-bottom-color: #2a2a4a;
        }

        body.dark-theme .import-tab {
            background: #16213e;
            color: #b0b0b0;
        }

        body.dark-theme .import-tab:hover {
            color: #e0e0e0;
        }

        body.dark-theme .import-tab.active {
            background: #3498db;
            color: #fff;
            border-bottom-color: #3498db;
        }

        body.dark-theme .import-tab-content {
            background: #1e2a3a;
        }

        body.dark-theme .import-panel textarea {
            background: #1a1a2e;
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        body.dark-theme .import-panel textarea:focus {
            border-color: #3498db;
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
        }

        body.dark-theme .file-upload-area {
            background: #1a1a2e;
            border-color: #2a2a4a;
            color: #b0b0b0;
        }

        body.dark-theme .file-upload-area:hover {
            border-color: #3498db;
            background: #16213e;
        }

        body.dark-theme .file-upload-area p {
            color: #b0b0b0;
        }

        body.dark-theme .import-hint {
            background: #1a1a2e;
            color: #b0b0b0;
        }

        body.dark-theme .import-hint code {
            background: #2a2a4a;
            color: #5dade2;
        }

        body.dark-theme .import-actions {
            background: #16213e;
        }

        /* 邮件查看弹窗 */
        body.dark-theme .mail-view-content {
            background: #1e2a3a;
        }

        body.dark-theme .mail-view-header {
            background: linear-gradient(135deg, #1a2a4a, #2a3a5a);
        }

        body.dark-theme .mail-view-tabs {
            background: #16213e;
            border-bottom-color: #2a2a4a;
        }

        body.dark-theme .mail-view-tab {
            color: #b0b0b0;
        }

        body.dark-theme .mail-view-tab:hover {
            color: #e0e0e0;
        }

        body.dark-theme .mail-view-tab.active {
            color: #3498db;
            border-bottom-color: #3498db;
            background: #1e2a3a;
        }

        body.dark-theme .mail-list-panel {
            background: #16213e;
            border-color: #2a2a4a;
        }

        body.dark-theme .mail-list-item {
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        body.dark-theme .mail-list-item:hover {
            background: #2a3a5a;
        }

        body.dark-theme .mail-list-item.active {
            background: #0f3460;
            border-left-color: #3498db;
        }

        body.dark-theme .mail-list-item .mail-sender {
            color: #e0e0e0;
        }

        body.dark-theme .mail-list-item .mail-subject {
            color: #b0b0b0;
        }

        body.dark-theme .mail-list-item .mail-date {
            color: #888;
        }

        body.dark-theme .mail-content-panel {
            background: #1e2a3a;
            color: #e0e0e0;
        }

        body.dark-theme .mail-content-header {
            border-color: #2a2a4a;
            background: #1e2a3a;
        }

        body.dark-theme .mail-content-header h4 {
            color: #e0e0e0;
        }

        body.dark-theme .mail-content-header .mail-meta {
            color: #888;
        }

        body.dark-theme .mail-content-body {
            background: #1e2a3a;
        }

        body.dark-theme .mail-content-body .mail-text {
            color: #b0b0b0;
        }

        body.dark-theme .mail-empty {
            color: #b0b0b0;
        }

        body.dark-theme .mail-empty i {
            color: #2a2a4a;
        }

        body.dark-theme .mail-sender {
            color: #b0b0b0;
        }

        body.dark-theme .mail-subject {
            color: #e0e0e0;
        }

        body.dark-theme .mail-date {
            color: #888;
        }

        /* 批量复制弹窗 */
        body.dark-theme .copy-modal-content {
            background: #1e2a3a;
            color: #e0e0e0;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        }

        body.dark-theme .copy-modal-content h3 {
            color: #e0e0e0;
        }

        body.dark-theme .copy-option {
            background: #16213e;
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        body.dark-theme .copy-option:hover {
            background: #2a3a5a;
            border-color: #3498db;
            color: #5dade2;
        }

        body.dark-theme .copy-option i {
            color: #5dade2;
        }

        /* 批量分组弹窗 */
        body.dark-theme .batch-group-content {
            background: #1e2a3a;
            color: #e0e0e0;
        }

        body.dark-theme #batch-group-modal .modal-content {
            background: #1e2a3a;
            color: #e0e0e0;
        }

        body.dark-theme #batch-group-modal .modal-content h3 {
            color: #e0e0e0;
        }

        body.dark-theme #batch-group-modal .group-select,
        body.dark-theme #batch-group-select {
            background: #1a1a2e;
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        /* 工具栏补充 */
        body.dark-theme .toolbar button {
            border-color: #2a2a4a;
        }

        body.dark-theme .toolbar select {
            background: #1a1a2e;
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        /* 分页补充 */
        body.dark-theme .pagination span {
            color: #b0b0b0;
        }

        body.dark-theme #page-jump-input,
        body.dark-theme .page-jump input {
            background: #1a1a2e;
            color: #e0e0e0;
            border-color: #2a2a4a;
        }

        body.dark-theme .page-jump {
            color: #b0b0b0;
        }

        body.dark-theme .page-total {
            color: #888;
        }

        /* 导入格式提示 */
        body.dark-theme .import-format-hint {
            background: #1a1a2e;
            color: #b0b0b0;
            border-color: #2a2a4a;
        }

        /* Loading overlay in dark mode */
        body.dark-theme .loading-overlay {
            background-color: rgba(26, 26, 46, 0.9);
        }

        body.dark-theme .loading-spinner {
            border-color: #2a2a4a;
            border-top-color: #3498db;
        }

        /* Token expiry in dark mode */
        body.dark-theme .expiry-ok {
            background: #1e4620;
            color: #6ddb8a;
        }

        body.dark-theme .expiry-notice {
            background: #1e4620;
            color: #5ddb7a;
        }

        body.dark-theme .expiry-warning {
            background: #4a3a1a;
            color: #f5c842;
        }

        body.dark-theme .expiry-danger {
            background: #4a1c1c;
            color: #f08080;
        }

        body.dark-theme .expiry-critical {
            background: #c0392b;
            color: #fff;
        }

        /* ===== 移动端适配（完全独立布局） ===== */
        @media (max-width: 768px) {
            body { flex-direction: column; }

            /* ---- 侧边栏 → 顶部完整面板 ---- */
            .sidebar {
                position: relative; width: 100%; height: auto;
                padding: 12px; flex-direction: column; gap: 0;
                overflow: visible;
            }

            /* 标题行：图标 + 名称 居中，时间在标题下方居中 */
            .sidebar-header {
                display: flex; flex-direction: column; align-items: center;
                margin-bottom: 6px; gap: 2px;
            }
            .sidebar-header .logo-icon { width: 32px; height: 32px; font-size: 14px; }
            .sidebar-header h2 { font-size: 15px; margin: 2px 0 0; }
            .sidebar-header .current-time {
                font-size: 10px; margin-top: 2px; color: #7f8c8d;
                text-align: center; width: 100%;
            }

            /* 主菜单：两列等宽网格 */
            .sidebar-menu { margin-top: 6px; overflow: visible; }
            .sidebar-menu .menu-label:first-child { display: none; }
            .sidebar-menu .menu-label { font-size: 10px; margin: 8px 0 4px; }
            .sidebar-menu ul {
                display: grid; grid-template-columns: 1fr 1fr; gap: 6px;
            }
            .sidebar-menu ul li a {
                padding: 8px; font-size: 12px; border-radius: 8px;
                text-align: center; justify-content: center;
            }

            /* 快捷统计：2x2网格，全部可见 */
            .quick-stats {
                display: grid !important; grid-template-columns: 1fr 1fr;
                gap: 4px; margin-top: 4px; overflow: visible;
            }
            .stat-item {
                padding: 6px 8px; flex: none; border-radius: 8px;
                display: flex; align-items: center; gap: 6px;
            }
            .stat-item i { font-size: 11px; }
            .stat-item .stat-value { font-size: 15px; }
            .stat-item .stat-label { font-size: 9px; }
            .stat-refresh { font-size: 10px !important; }

            /* 分组快捷入口：横向滚动，全部可见 */
            .quick-groups {
                display: flex !important; gap: 6px; overflow-x: auto; overflow-y: visible;
                max-height: none; padding: 4px 0; -webkit-overflow-scrolling: touch;
            }
            .quick-group-item {
                flex-shrink: 0; padding: 5px 10px; font-size: 11px;
                border-radius: 6px; white-space: nowrap;
            }

            /* 快捷操作：可见，居中一行 */
            .quick-actions {
                display: flex !important; gap: 6px; margin-top: 4px;
                justify-content: center; overflow: visible;
            }
            .quick-action-btn { width: 36px; height: 36px; font-size: 14px; }

            /* 底栏：账号总数 + 主题切换，可见 */
            .sidebar-footer {
                display: flex !important; align-items: center; justify-content: space-between;
                padding: 6px 0 0; margin-top: 8px;
                border-top: 1px solid rgba(0,0,0,.08);
                overflow: visible; background: transparent; border-radius: 0;
            }
            .sidebar-footer .account-label { font-size: 10px; }
            .sidebar-footer .account-count { font-size: 14px; }
            .theme-toggle {
                position: static; width: 32px; height: 32px; font-size: 14px;
            }
            .sidebar-footer .theme-toggle { display: inline-flex !important; }

            /* ---- 内容区 ---- */
            .content { margin-left: 0; padding: 10px; min-height: auto; }
            .content h1 { font-size: 16px; margin-bottom: 8px; }

            /* ---- 工具栏：两列网格 ---- */
            .toolbar {
                display: grid !important;
                grid-template-columns: 1fr 1fr;
                gap: 6px !important;
            }
            .toolbar .search-box { grid-column: 1 / -1; }
            .toolbar .search-box input { font-size: 13px; width: 100%; }
            .toolbar .group-select { font-size: 12px; padding: 8px; }
            .toolbar-btn {
                font-size: 12px; padding: 8px 6px;
                text-align: center; justify-content: center; white-space: nowrap;
            }
            .toolbar > div[style*="width:100%"] { display: none !important; }

            /* ---- 表格 → 卡片（flex行排列） ---- */
            .email-table { display: block; }
            .email-table thead { display: none; }
            .email-table tbody { display: flex; flex-direction: column; gap: 8px; }
            .email-table tbody tr {
                display: flex; flex-wrap: wrap; align-items: center;
                background: #fff; border: 1px solid #e8f0fe;
                border-radius: 10px; padding: 10px 12px;
                box-shadow: 0 1px 4px rgba(0,0,0,.05);
                position: relative;
            }
            .email-table tbody tr:hover { background: #f0f7ff; }
            .email-table tbody tr:has(input[type="checkbox"]:checked) { border-color: #3498db; background: #e8f4fc; }

            /* checkbox — 右上角 */
            .email-table tbody td:nth-child(1) {
                order: 0; position: absolute; top: 10px; right: 10px;
            }
            /* ID — 隐藏 */
            .email-table tbody td:nth-child(2) { display: none; }

            /* 邮箱 — Line 1, 全宽 */
            .email-table tbody td:nth-child(3) {
                order: 1; width: 100%;
                font-size: 14px; font-weight: 600; color: #2c3e50;
                padding-right: 30px;
                overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
            }
            /* 密码 — Line 2, 全宽 */
            .email-table tbody td:nth-child(4) {
                order: 2; width: 100%;
                font-size: 12px; color: #7f8c8d; margin-top: 2px;
            }
            .email-table tbody td:nth-child(4)::before { content: "密码: "; color: #aaa; font-size: 11px; }

            /* 分组 + 令牌状态 + 权限 + 有效期 — Line 3, 同一行flex */
            .email-table tbody td:nth-child(5),
            .email-table tbody td:nth-child(6),
            .email-table tbody td:nth-child(7),
            .email-table tbody td:nth-child(8) {
                order: 3; flex-shrink: 0;
                display: inline-flex !important; align-items: center;
                font-size: 11px; margin-top: 6px; margin-right: 4px;
            }

            /* 操作按钮 — Line 4, 全宽，等宽按钮 */
            .email-table tbody td:last-child {
                order: 4; width: 100%;
                display: flex !important; gap: 6px;
                padding-top: 8px; margin-top: 8px;
                border-top: 1px solid #f0f0f0;
            }
            .email-table tbody td:last-child button {
                flex: 1; padding: 8px 0; font-size: 12px;
                border-radius: 6px; text-align: center;
                display: flex; align-items: center; justify-content: center; gap: 4px;
            }

            /* 暗色模式卡片 */
            body.dark-theme .email-table tbody tr { background: #1e2a3a; border-color: #2a3a5a; }
            body.dark-theme .email-table tbody tr:hover { background: #253548; }
            body.dark-theme .email-table tbody td:nth-child(3) { color: #e0e0e0; }
            body.dark-theme .email-table tbody td:nth-child(4) { color: #8899aa; }
            body.dark-theme .email-table tbody td:last-child { border-top-color: #2a3a5a; }
            body.dark-theme .sidebar-header .current-time { color: #8899aa; }

            /* ---- 分页 ---- */
            .pagination-section { flex-direction: column; gap: 8px; padding: 8px 0; }
            .pagination { display: flex; flex-wrap: wrap; gap: 4px; justify-content: center; }
            .pagination button { padding: 6px 10px; font-size: 11px; min-width: 32px; }
            .pagination-tools { flex-wrap: wrap; gap: 6px; justify-content: center; }
            .page-jump input { width: 48px; font-size: 12px; }
            .page-jump span, .page-total { font-size: 11px; }
            #items-per-page { font-size: 11px; padding: 5px; }

            /* ---- 弹窗 ---- */
            .modal-content { width: 92% !important; max-width: 92%; padding: 16px; }
            .modal-content h3 { font-size: 15px; }
            .import-modal-content { width: 96%; max-height: 88vh; overflow-y: auto; padding: 14px; }
            .import-modal-content textarea { height: 110px; font-size: 13px; }
            .import-tab { font-size: 12px; padding: 8px 14px; }
            .import-hint { font-size: 11px; }
            .import-actions { gap: 8px; }
            .import-actions button { flex: 1; font-size: 13px; padding: 10px; }

            .mail-view-content {
                width: 100% !important; height: 100% !important;
                max-width: 100% !important; border-radius: 0 !important;
            }
            .mail-view-header { padding: 10px 12px; }
            .mail-view-header h3 { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 55vw; }
            .mail-view-tabs .mail-view-tab { font-size: 12px; padding: 8px 14px; }
            .mail-view-body { flex-direction: column; }
            .mail-list-panel {
                width: 100% !important; max-height: 25vh;
                border-right: none !important; border-bottom: 1px solid #e8f0fe;
                overflow-y: auto; flex-shrink: 0;
            }
            .mail-list-item { padding: 10px; }
            .mail-sender { font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
            .mail-subject { font-size: 12px; }
            .mail-date { font-size: 10px; }
            .mail-content-panel { width: 100% !important; padding: 12px; overflow-x: hidden; }
            .mail-content-header h4 { font-size: 14px; word-break: break-word; }
            .mail-content-body { font-size: 13px; overflow-x: auto; word-break: break-word; }
            .mail-content-body img { max-width: 100% !important; height: auto !important; }
            .mail-content-body table { max-width: 100% !important; font-size: 12px; }

            .copy-modal-content { width: 92%; padding: 16px; }
            .copy-option { padding: 14px; font-size: 14px; border-radius: 8px; }
            .group-management { padding: 10px; }
            .group-item { padding: 12px; }
            .add-group-form .form-row { flex-direction: column; gap: 8px; }
            .add-group-form input { width: 100%; font-size: 14px; padding: 10px; }
            .add-group-form button { width: 100%; padding: 10px; }

            /* 防止底部导航栏遮挡 */
            .content { padding-bottom: 120px; }
            .pagination-section { margin-bottom: 80px; }
            .mail-view-content { padding-bottom: env(safe-area-inset-bottom, 60px); }
            .mail-content-panel { padding-bottom: 80px !important; }
        }

        @media (max-width: 400px) {
            .sidebar-header h2 { font-size: 13px; }
            .stat-item .stat-value { font-size: 13px; }
            .content h1 { font-size: 14px; }
            .toolbar-btn { font-size: 11px; padding: 7px 4px; }
        }

        /* ===== 全局配色方案 ===== */
        /* 星空主题 (Starry Night) — 深蓝紫渐变 */
        body.theme-starry {
            background: linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
        }
        body.theme-starry .sidebar {
            background: linear-gradient(180deg, #1a1a3e 0%, #0f0c29 100%);
            box-shadow: 2px 0 15px rgba(48, 43, 99, 0.3);
        }
        body.theme-starry .sidebar-header h2 { color: #c5b3f0; }
        body.theme-starry .sidebar-menu ul li a { color: #b8a9d9; }
        body.theme-starry .sidebar-menu ul li a.active { background: linear-gradient(135deg, #7b68ee, #9b59b6); color: #fff; }
        body.theme-starry .sidebar-menu ul li a:hover { background: rgba(123, 104, 238, 0.15); }
        body.theme-starry .content { color: #d5d0e6; }
        body.theme-starry .content h1 { color: #c5b3f0; }
        body.theme-starry .email-table thead { background: linear-gradient(135deg, #302b63, #7b68ee); }
        body.theme-starry .email-table tbody tr { background: #1a1a3e; border-color: #302b63; color: #d5d0e6; }
        body.theme-starry .email-table tbody tr:hover { background: #252350; }
        body.theme-starry .toolbar-btn { border-color: #302b63; color: #c5b3f0; }
        body.theme-starry .toolbar-btn.btn-primary { background: linear-gradient(135deg, #7b68ee, #9b59b6); color: #fff; }
        body.theme-starry .toolbar-btn.btn-secondary { background: #1a1a3e; }
        body.theme-starry .toolbar-btn.btn-danger { background: linear-gradient(135deg, #e74c3c, #c0392b); }
        body.theme-starry .search-box input { background: #1a1a3e; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .group-select { background: #1a1a3e; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .modal-content { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .import-modal-content { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .mail-view-content { background: #1a1a3e; }
        body.theme-starry .mail-view-header { background: linear-gradient(135deg, #302b63, #7b68ee); }
        body.theme-starry .mail-list-panel { background: #0f0c29; border-color: #302b63; }
        body.theme-starry .mail-list-item { color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .mail-list-item:hover { background: #252350; }
        body.theme-starry .mail-list-item.active { background: #302b63; }
        body.theme-starry .mail-content-panel { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .stat-item { border-color: #302b63; }
        body.theme-starry .sidebar-footer { border-top-color: #302b63; }
        body.theme-starry .quick-group-item { background: #302b63; color: #c5b3f0; }
        body.theme-starry .pagination button { background: #1a1a3e; color: #c5b3f0; border-color: #302b63; }
        body.theme-starry .pagination button.active { background: #7b68ee; color: #fff; }
        body.theme-starry .group-item { background: #1a1a3e; border-color: #302b63; color: #d5d0e6; }
        body.theme-starry .copy-modal-content { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .copy-option { background: #0f0c29; color: #c5b3f0; border-color: #302b63; }
        body.theme-starry .copy-option:hover { background: #302b63; }
        body.theme-starry .import-panel textarea { background: #0f0c29; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .file-upload-area { background: #0f0c29; border-color: #302b63; color: #b8a9d9; }
        body.theme-starry .import-hint { background: #0f0c29; border-color: #302b63; color: #b8a9d9; }
        body.theme-starry #page-jump-input { background: #1a1a3e; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry #items-per-page { background: #1a1a3e; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .group-tag { background: #302b63; color: #c5b3f0; }
        body.theme-starry .token-status { border-color: #302b63; }
        body.theme-starry .no-data { color: #8878b8; }
        body.theme-starry .pagination-section { background: transparent; }
        body.theme-starry select option { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .mail-view-tabs { background: #0f0c29; }
        body.theme-starry .mail-view-tab { color: #b8a9d9; }
        body.theme-starry .mail-view-tab.active { background: #7b68ee; color: #fff; }
        body.theme-starry .batch-group-content, body.theme-starry #batch-group-modal .modal-content { background: #1a1a3e; color: #d5d0e6; }
        body.theme-starry .import-modal-header { background: linear-gradient(135deg, #302b63, #7b68ee); }
        body.theme-starry .loading-overlay { background: rgba(15, 12, 41, 0.8); }
        body.theme-starry .mail-content-body { color: #d5d0e6; }
        body.theme-starry .mail-content-body a { color: #9b8ec4; }
        body.theme-starry .toolbar { background: #1a1a3e; border-color: #302b63; }
        body.theme-starry .email-table { background: #0f0c29; border-color: #302b63; }
        body.theme-starry .email-table td { color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .email-table th { color: #fff; }
        body.theme-starry .content-section { background: transparent; }
        body.theme-starry .add-group-form input { background: #1a1a3e; color: #d5d0e6; border-color: #302b63; }
        body.theme-starry .import-tab.active { background: #7b68ee; color: #fff; }
        body.theme-starry .import-tab { background: #0f0c29; color: #b8a9d9; }
        body.theme-starry .mail-meta span { color: #b8a9d9; }
        body.theme-starry .mail-content-header { border-color: #302b63; }
        body.theme-starry .mail-content-header h4 { color: #c5b3f0; }

        /* 黄昏主题 (Dusk) — 暖橙红渐变 */
        body.theme-dusk {
            background: linear-gradient(135deg, #2c1810 0%, #4a2520 50%, #1a0f0a 100%);
        }
        body.theme-dusk .sidebar {
            background: linear-gradient(180deg, #3a1f18 0%, #2c1810 100%);
            box-shadow: 2px 0 15px rgba(74, 37, 32, 0.3);
        }
        body.theme-dusk .sidebar-header h2 { color: #f0c27a; }
        body.theme-dusk .sidebar-menu ul li a { color: #d4a574; }
        body.theme-dusk .sidebar-menu ul li a.active { background: linear-gradient(135deg, #e67e22, #d35400); color: #fff; }
        body.theme-dusk .sidebar-menu ul li a:hover { background: rgba(230, 126, 34, 0.15); }
        body.theme-dusk .content { color: #e8d5c0; }
        body.theme-dusk .content h1 { color: #f0c27a; }
        body.theme-dusk .email-table thead { background: linear-gradient(135deg, #4a2520, #e67e22); }
        body.theme-dusk .email-table tbody tr { background: #3a1f18; border-color: #4a2520; color: #e8d5c0; }
        body.theme-dusk .email-table tbody tr:hover { background: #4a2520; }
        body.theme-dusk .toolbar-btn { border-color: #4a2520; color: #f0c27a; }
        body.theme-dusk .toolbar-btn.btn-primary { background: linear-gradient(135deg, #e67e22, #d35400); color: #fff; }
        body.theme-dusk .toolbar-btn.btn-secondary { background: #3a1f18; }
        body.theme-dusk .toolbar-btn.btn-danger { background: linear-gradient(135deg, #e74c3c, #c0392b); }
        body.theme-dusk .search-box input { background: #3a1f18; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .group-select { background: #3a1f18; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .modal-content { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .import-modal-content { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .mail-view-content { background: #3a1f18; }
        body.theme-dusk .mail-view-header { background: linear-gradient(135deg, #4a2520, #e67e22); }
        body.theme-dusk .mail-list-panel { background: #2c1810; border-color: #4a2520; }
        body.theme-dusk .mail-list-item { color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .mail-list-item:hover { background: #4a2520; }
        body.theme-dusk .mail-list-item.active { background: #5a3020; }
        body.theme-dusk .mail-content-panel { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .stat-item { border-color: #4a2520; }
        body.theme-dusk .sidebar-footer { border-top-color: #4a2520; }
        body.theme-dusk .quick-group-item { background: #4a2520; color: #f0c27a; }
        body.theme-dusk .pagination button { background: #3a1f18; color: #f0c27a; border-color: #4a2520; }
        body.theme-dusk .pagination button.active { background: #e67e22; color: #fff; }
        body.theme-dusk .group-item { background: #3a1f18; border-color: #4a2520; color: #e8d5c0; }
        body.theme-dusk .copy-modal-content { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .copy-option { background: #2c1810; color: #f0c27a; border-color: #4a2520; }
        body.theme-dusk .copy-option:hover { background: #4a2520; }
        body.theme-dusk .import-panel textarea { background: #2c1810; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .file-upload-area { background: #2c1810; border-color: #4a2520; color: #d4a574; }
        body.theme-dusk .import-hint { background: #2c1810; border-color: #4a2520; color: #d4a574; }
        body.theme-dusk #page-jump-input { background: #3a1f18; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk #items-per-page { background: #3a1f18; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .group-tag { background: #4a2520; color: #f0c27a; }
        body.theme-dusk .token-status { border-color: #4a2520; }
        body.theme-dusk .no-data { color: #c0956a; }
        body.theme-dusk .pagination-section { background: transparent; }
        body.theme-dusk select option { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .mail-view-tabs { background: #2c1810; }
        body.theme-dusk .mail-view-tab { color: #d4a574; }
        body.theme-dusk .mail-view-tab.active { background: #e67e22; color: #fff; }
        body.theme-dusk .batch-group-content, body.theme-dusk #batch-group-modal .modal-content { background: #3a1f18; color: #e8d5c0; }
        body.theme-dusk .import-modal-header { background: linear-gradient(135deg, #4a2520, #e67e22); }
        body.theme-dusk .loading-overlay { background: rgba(26, 15, 10, 0.8); }
        body.theme-dusk .mail-content-body { color: #e8d5c0; }
        body.theme-dusk .mail-content-body a { color: #f0c27a; }
        body.theme-dusk .toolbar { background: #3a1f18; border-color: #4a2520; }
        body.theme-dusk .email-table { background: #2c1810; border-color: #4a2520; }
        body.theme-dusk .email-table td { color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .email-table th { color: #fff; }
        body.theme-dusk .content-section { background: transparent; }
        body.theme-dusk .add-group-form input { background: #3a1f18; color: #e8d5c0; border-color: #4a2520; }
        body.theme-dusk .import-tab.active { background: #e67e22; color: #fff; }
        body.theme-dusk .import-tab { background: #2c1810; color: #d4a574; }
        body.theme-dusk .mail-meta span { color: #d4a574; }
        body.theme-dusk .mail-content-header { border-color: #4a2520; }
        body.theme-dusk .mail-content-header h4 { color: #f0c27a; }

        /* Mobile card theme support */
        @media (max-width: 768px) {
            body.theme-starry .email-table tbody tr { background: #1a1a3e; border-color: #302b63; }
            body.theme-starry .email-table tbody tr:hover { background: #252350; }
            body.theme-starry .email-table tbody td:nth-child(3) { color: #c5b3f0; }
            body.theme-starry .email-table tbody td:nth-child(4) { color: #8878b8; }
            body.theme-starry .email-table tbody td:last-child { border-top-color: #302b63; }

            body.theme-dusk .email-table tbody tr { background: #3a1f18; border-color: #4a2520; }
            body.theme-dusk .email-table tbody tr:hover { background: #4a2520; }
            body.theme-dusk .email-table tbody td:nth-child(3) { color: #f0c27a; }
            body.theme-dusk .email-table tbody td:nth-child(4) { color: #c0956a; }
            body.theme-dusk .email-table tbody td:last-child { border-top-color: #4a2520; }
        }