:root {
      --primary: #165dff;
      --primary-light: #edf3ff;
      --border: #e5e6eb;
      --text: #1d2129;
      --text-secondary: #4e5969;
      --muted: #86909c;
      --bg: #f5f7fa;
      --panel: #ffffff;
      --success: #00b42a;
      --warning: #ff7d00;
      --danger: #f53f3f;
      --mail-list-width: 420px;
      --action-tabs-width: 132px;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      font-family: Arial, "Microsoft YaHei", sans-serif;
      color: var(--text);
      background: var(--bg);
      height: 100vh;
      overflow: hidden;
    }

    button, input, select, textarea {
      font: inherit;
    }

    .app {
      height: 100vh;
      display: flex;
      flex-direction: column;
    }

    .topbar {
      height: 64px;
      background: #fff;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 20px;
      flex-shrink: 0;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 700;
      color: var(--primary);
      font-size: 22px;
    }

    .brand-subtitle {
      color: var(--muted);
      font-size: 13px;
      margin-left: 12px;
    }

    .topbar-right {
      display: flex;
      align-items: center;
      gap: 14px;
      color: var(--text-secondary);
    }

    .layout {
      flex: 1;
      min-height: 0;
      display: grid;
      grid-template-columns: 256px minmax(0, 1fr);
    }

    .sidebar {
      background: #fff;
      border-right: 1px solid var(--border);
      min-height: 0;
      overflow: auto;
      padding: 14px;
    }

    .menu-group-title {
      margin: 18px 10px 10px;
      font-size: 12px;
      color: var(--muted);
      font-weight: 700;
    }

    .mailbox-block {
      margin-top: 10px;
      padding-top: 10px;
      border-top: 1px solid #f0f1f5;
    }

    .mailbox-header {
      width: 100%;
      border: none;
      background: transparent;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 10px 12px 8px;
      color: var(--text);
      font-weight: 700;
      text-align: left;
      cursor: pointer;
    }

    .mailbox-header i {
      color: var(--primary);
    }

    .mailbox-address {
      min-width: 0;
      overflow: hidden;
      text-overflow: ellipsis;
      white-space: nowrap;
    }

    .mailbox-menu {
      padding-left: 12px;
    }

    .mailbox-menu .menu-item {
      padding: 8px 12px;
      font-size: 13px;
    }

    .menu-item {
      width: 100%;
      border: none;
      background: transparent;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 12px;
      border-radius: 8px;
      color: var(--text-secondary);
      cursor: pointer;
      margin-bottom: 4px;
    }

    .menu-item:hover {
      background: #f7f8fa;
    }

    .menu-item.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
    }

    .menu-item-left {
      display: flex;
      align-items: center;
      gap: 10px;
      min-width: 0;
    }

    .badge {
      min-width: 22px;
      height: 22px;
      border-radius: 11px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      color: #fff;
      padding: 0 6px;
    }

    .badge.warning { background: var(--warning); }
    .badge.success { background: var(--success); }
    .badge.gray { background: #b8bec9; }
    .badge.danger { background: var(--danger); }

    .workspace {
      min-width: 0;
      min-height: 0;
      display: grid;
      grid-template-columns: var(--mail-list-width) minmax(0, 1fr);
    }

    .mail-list-panel {
      background: #fff;
      border-right: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      min-width: 320px;
      max-width: 620px;
      min-height: 0;
      position: relative;
    }

    .mail-list-header {
      padding: 14px 16px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
    }

    .mail-list-tools {
      display: flex;
      align-items: center;
      gap: 14px;
      color: var(--text-secondary);
      font-size: 13px;
    }

    .mail-list-tools span {
      cursor: pointer;
      white-space: nowrap;
    }

    .search-box {
      padding: 12px 16px;
      border-bottom: 1px solid var(--border);
    }

    .search-input-wrap {
      position: relative;
    }

    .search-input-wrap i {
      position: absolute;
      left: 12px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--muted);
    }

    .search-input {
      width: 100%;
      height: 38px;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0 12px 0 36px;
      outline: none;
      background: #fff;
    }

    .search-input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.08);
    }

    .mail-list {
      flex: 1;
      min-height: 0;
      overflow: auto;
    }

    .mail-batch-actions {
      display: none;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 10px 12px;
      border-top: 1px solid var(--border);
      background: #fff;
      flex-wrap: wrap;
    }

    .mail-batch-actions.active {
      display: flex;
    }

    .mail-batch-left,
    .mail-batch-right {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .batch-btn {
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-secondary);
      border-radius: 8px;
      padding: 7px 12px;
      font-size: 13px;
      cursor: pointer;
    }

    .batch-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .batch-count {
      font-size: 12px;
      color: var(--muted);
    }

    .mail-item {
      display: flex;
      gap: 10px;
      padding: 14px 16px;
      border-bottom: 1px solid #f0f1f5;
      cursor: pointer;
      background: #fff;
    }

    .mail-item:hover {
      background: #fafbfc;
    }

    .mail-item.active {
      background: var(--primary-light);
      border-left: 3px solid var(--primary);
      padding-left: 13px;
    }

    .mail-item-checkbox {
      margin-top: 4px;
      flex-shrink: 0;
    }

    .mail-item-content {
      flex: 1;
      min-width: 0;
    }

    .mail-item-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 6px;
    }

    .mail-sender {
      font-size: 14px;
      font-weight: 700;
      color: var(--text);
    }

    .mail-time {
      font-size: 12px;
      color: var(--muted);
      flex-shrink: 0;
    }

    .mail-subject {
      font-size: 14px;
      font-weight: 600;
      margin-bottom: 6px;
      color: var(--text-secondary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .mail-preview {
      font-size: 12px;
      color: var(--muted);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .resize-handle {
      position: absolute;
      top: 0;
      right: 0;
      width: 6px;
      height: 100%;
      cursor: ew-resize;
      background: transparent;
    }

    .resize-handle:hover {
      background: rgba(22, 93, 255, 0.2);
    }

    .mail-detail-area {
      min-width: 0;
      min-height: 0;
      display: grid;
      grid-template-rows: auto minmax(0, 1fr);
      background: var(--bg);
    }

    .mail-tabs {
      background: #fff;
      border-bottom: 1px solid var(--border);
      display: flex;
      flex-direction: row;
      align-items: center;
      overflow-x: auto;
    }

    .mail-tab {
      border: none;
      background: #fff;
      text-align: center;
      padding: 16px 18px;
      border-right: 1px solid #f0f1f5;
      color: var(--text-secondary);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-size: 14px;
      white-space: nowrap;
    }

    .mail-tab.active {
      color: var(--primary);
      font-weight: 700;
      background: var(--primary-light);
    }

    .mail-detail-content {
      min-width: 0;
      min-height: 0;
      overflow: auto;
      padding: 20px;
    }

    .panel {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
    }

    .panel-header {
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
    }

    .panel-title {
      margin: 0;
      font-size: 28px;
      font-weight: 800;
    }

    .panel-actions {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .icon-btn {
      width: 34px;
      height: 34px;
      border: none;
      border-radius: 8px;
      background: #f7f8fa;
      color: var(--text-secondary);
      cursor: pointer;
    }

    .panel-body {
      padding: 20px;
    }

    .mail-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-bottom: 20px;
      flex-wrap: wrap;
    }

    .sender-block {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .sender-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: var(--primary);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }

    .sender-name {
      font-weight: 700;
      margin-bottom: 2px;
    }

    .sender-email,
    .sender-to,
    .mail-date {
      color: var(--muted);
      font-size: 12px;
    }

    .section-title {
      font-size: 16px;
      font-weight: 700;
      margin: 20px 0 12px;
    }

    .section-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin: 20px 0 12px;
    }

    .section-bar .section-title {
      margin: 0;
    }

    .translate-btn {
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-secondary);
      border-radius: 8px;
      padding: 8px 14px;
      cursor: pointer;
      font-size: 13px;
    }

    .translate-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .mail-article {
      background: #f7f8fa;
      border-radius: 10px;
      padding: 18px;
      color: var(--text-secondary);
      line-height: 1.9;
      font-size: 14px;
    }

    .translation-panel {
      display: none;
      margin-top: 14px;
    }

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

    .translation-panel .mail-article {
      background: #f2f6ff;
      border: 1px solid #d7e3ff;
    }

    .reply-panel {
      display: none;
    }

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

    .form-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      margin-bottom: 18px;
    }

    .form-item label {
      display: block;
      margin-bottom: 6px;
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 600;
    }

    .form-item input,
    .form-item select,
    .reply-textarea {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 10px 12px;
      outline: none;
      background: #fff;
    }

    .reply-textarea {
      min-height: 260px;
      resize: vertical;
      line-height: 1.8;
    }

    .reply-shell {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .reply-mail-summary {
      padding-bottom: 14px;
      border-bottom: 1px solid var(--border);
    }

    .reply-summary-top {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 10px;
      flex-wrap: wrap;
    }

    .reply-mail-from {
      color: var(--text-secondary);
      font-size: 13px;
      margin-bottom: 4px;
    }

    .reply-mail-time {
      color: var(--muted);
      font-size: 12px;
    }

    .reply-basic-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .reply-basic-grid .subject-item {
      grid-column: 1 / -1;
    }

    .reply-source-box {
      border: 1px solid var(--border);
      border-radius: 10px;
      background: #fbfcfe;
      padding: 16px;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 13px;
      max-height: 180px;
      overflow: auto;
    }

    .reply-editor-topbar {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto auto minmax(0, 1fr);
      gap: 12px;
      align-items: center;
    }

    .reply-editor-side {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .reply-editor-side.right {
      justify-content: flex-end;
    }

    .editor-label {
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 600;
    }

    .mini-select {
      min-width: 130px;
      border: 1px solid var(--border);
      border-radius: 8px;
      background: #fff;
      padding: 8px 10px;
      color: var(--text-secondary);
    }

    .editor-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .editor-card {
      border: 1px solid var(--border);
      border-radius: 12px;
      overflow: hidden;
      background: #fff;
      min-width: 0;
    }

    .editor-toolbar {
      padding: 10px 14px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      gap: 10px;
      color: var(--text-secondary);
      font-size: 13px;
      flex-wrap: wrap;
      background: #fafbfc;
    }

    .editor-toolbar i {
      cursor: pointer;
    }

    .editor-textarea {
      width: 100%;
      min-height: 260px;
      border: none;
      outline: none;
      resize: vertical;
      padding: 16px;
      line-height: 1.8;
      font-size: 14px;
      color: var(--text-secondary);
    }

    .editor-footer {
      padding: 10px 14px;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 12px;
      flex-wrap: wrap;
      background: #fafbfc;
    }

    .small-action-btn {
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-secondary);
      border-radius: 8px;
      padding: 7px 12px;
      cursor: pointer;
      font-size: 12px;
    }

    .small-action-btn:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    .small-action-btn.primary {
      border-color: var(--primary);
      background: var(--primary);
      color: #fff;
    }

    .inline-checks {
      display: flex;
      align-items: center;
      gap: 16px;
      color: var(--text-secondary);
      font-size: 13px;
      flex-wrap: wrap;
    }

    .inline-checks label {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      cursor: pointer;
    }

    .attachment-box {
      border: 1px dashed var(--border);
      border-radius: 12px;
      padding: 16px 20px;
      text-align: center;
      color: var(--muted);
      background: #fcfcfd;
    }

    .attachment-box .fa-cloud-upload {
      font-size: 20px;
      margin-bottom: 6px;
      color: var(--muted);
    }

    .attachment-box p {
      margin: 4px 0;
    }

    .reply-actions {
      display: flex;
      justify-content: flex-end;
      gap: 12px;
      margin-top: 18px;
    }

    .btn {
      border: none;
      border-radius: 8px;
      padding: 10px 16px;
      cursor: pointer;
      font-size: 14px;
    }

    .btn-default {
      background: #f2f3f5;
      color: var(--text-secondary);
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
    }

    .btn-success {
      background: var(--success);
      color: #fff;
    }

    .content-stage {
      min-width: 0;
      min-height: 0;
      overflow: hidden;
      position: relative;
    }

    .app-view {
      display: none;
      min-width: 0;
      min-height: 0;
      height: 100%;
    }

    .app-view.active {
      display: block;
    }

    .workspace.app-view.active {
      display: grid;
    }

    .page-view {
      padding: 20px;
      overflow: auto;
      background: var(--bg);
    }

    .page-shell {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .page-header-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 20px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
    }

    .page-title-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    .page-title {
      margin: 0 0 8px;
      font-size: 26px;
      font-weight: 800;
      color: var(--text);
    }

    .page-desc {
      margin: 0;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 14px;
      max-width: 920px;
    }

    .page-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .btn-outline {
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-secondary);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .stat-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 18px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
    }

    .stat-label {
      color: var(--muted);
      font-size: 13px;
      margin-bottom: 10px;
    }

    .stat-value {
      font-size: 28px;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 8px;
    }

    .stat-meta {
      color: var(--text-secondary);
      font-size: 13px;
    }

    .admin-layout,
    .kb-layout {
      display: grid;
      grid-template-columns: 320px minmax(0, 1fr);
      gap: 16px;
      min-height: 0;
    }

    .stack-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 18px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
      margin-bottom: 16px;
    }

    .stack-card:last-child {
      margin-bottom: 0;
    }

    .card-title {
      margin: 0 0 12px;
      font-size: 16px;
      font-weight: 800;
      color: var(--text);
    }

    .tree-list,
    .simple-list {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .tree-item,
    .simple-item {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 10px 12px;
      border-radius: 10px;
      background: #f7f8fa;
      color: var(--text-secondary);
      font-size: 13px;
    }

    .tree-item.active,
    .simple-item.active {
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 700;
    }

    .tree-sublist {
      margin: -2px 0 0 18px;
      padding-left: 14px;
      border-left: 1px dashed #d9dee8;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .tree-check-group {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 10px 12px;
      border-radius: 10px;
      background: #f7f8fa;
      border: 1px solid #edf0f3;
    }

    .tree-check-group label,
    .tree-check-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      color: var(--text);
      font-size: 13px;
      line-height: 1.5;
    }

    .tree-check-item {
      justify-content: space-between;
      padding: 10px 12px;
      border-radius: 10px;
      background: #fafbfc;
      border: 1px solid #edf0f3;
      color: var(--text-secondary);
    }

    .tree-check-item input,
    .tree-check-group input {
      margin-top: 3px;
    }

    .tree-check-meta {
      font-size: 12px;
      color: var(--text-tertiary);
      white-space: nowrap;
    }

    .main-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 18px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
      margin-bottom: 16px;
    }

    .main-card:last-child {
      margin-bottom: 0;
    }

    .card-header-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
      flex-wrap: wrap;
    }

    .toolbar-row {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .search-lite,
    .table-select {
      height: 36px;
      border: 1px solid var(--border);
      border-radius: 8px;
      padding: 0 12px;
      background: #fff;
      color: var(--text-secondary);
    }

    .search-lite {
      min-width: 240px;
    }

    .table-wrap {
      overflow: auto;
      border: 1px solid #f0f1f5;
      border-radius: 12px;
    }

    .data-table {
      width: 100%;
      border-collapse: collapse;
      font-size: 13px;
    }

    .data-table th,
    .data-table td {
      padding: 12px 14px;
      border-bottom: 1px solid #f0f1f5;
      text-align: left;
      color: var(--text-secondary);
      vertical-align: top;
      white-space: nowrap;
    }

    .data-table th {
      background: #fafbfc;
      color: var(--text);
      font-weight: 700;
    }

    .data-table tr:last-child td {
      border-bottom: none;
    }

    .tag-row {
      display: flex;
      align-items: center;
      gap: 8px;
      flex-wrap: wrap;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      font-size: 12px;
      background: #f2f3f5;
      color: var(--text-secondary);
    }

    .tag.primary { background: var(--primary-light); color: var(--primary); }
    .tag.success { background: rgba(0,180,42,.08); color: var(--success); }
    .tag.warning { background: rgba(255,125,0,.1); color: var(--warning); }

    .subtle-text {
      color: var(--muted);
      font-size: 12px;
      line-height: 1.7;
    }

    .kv-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .kv-box {
      background: #f7f8fa;
      border-radius: 12px;
      padding: 14px;
    }

    .kv-title {
      font-size: 13px;
      font-weight: 700;
      color: var(--text);
      margin-bottom: 8px;
    }

    .pipeline-grid,
    .kb-card-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 14px;
    }

    .pipeline-card,
    .kb-card {
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 16px;
      background: #fff;
    }

    .pipeline-card h4,
    .kb-card h4 {
      margin: 0 0 8px;
      font-size: 15px;
      color: var(--text);
    }

    .pipeline-card p,
    .kb-card p {
      margin: 0;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.8;
    }

    .kb-card-actions {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      margin-top: 14px;
      flex-wrap: wrap;
    }

    .mini-link-btn {
      border: none;
      background: transparent;
      color: var(--primary);
      cursor: pointer;
      padding: 0;
      font-size: 13px;
      font-weight: 700;
    }

    .field-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .field-item label {
      display: block;
      margin-bottom: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 700;
    }

    .field-item input,
    .field-item select,
    .field-item textarea {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 10px 12px;
      background: #fff;
      color: var(--text);
      resize: vertical;
    }

    .field-item textarea {
      min-height: 88px;
    }

    .field-item.full {
      grid-column: 1 / -1;
    }

    .inline-note {
      margin-top: 10px;
      font-size: 12px;
      color: var(--muted);
      line-height: 1.7;
    }

    .config-section {
      margin-top: 18px;
      padding-top: 18px;
      border-top: 1px solid var(--border);
    }

    .config-section h4 {
      margin: 0 0 10px;
      font-size: 14px;
      color: var(--text);
    }

    .permission-layout {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 16px;
    }

    .check-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 12px;
      border: 1px solid #edf0f3;
      border-radius: 12px;
      background: #fafbfc;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.6;
    }

    .check-item input {
      margin-top: 3px;
    }

    .timeline-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .timeline-item {
      position: relative;
      padding-left: 18px;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.8;
    }

    .timeline-item::before {
      content: "";
      position: absolute;
      left: 0;
      top: 8px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    .model-layout {
      display: grid;
      grid-template-columns: 320px minmax(0, 1fr);
      gap: 16px;
      min-height: 0;
    }

    .model-nav-card {
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .model-nav-item {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 10px;
      padding: 12px 14px;
      border-radius: 12px;
      background: #f7f8fa;
      border: 1px solid #edf0f3;
      color: var(--text-secondary);
      font-size: 13px;
      cursor: pointer;
    }

    .model-nav-item.active {
      background: var(--primary-light);
      border-color: rgba(22, 119, 255, 0.16);
      color: var(--primary);
    }

    .model-nav-item strong {
      display: block;
      margin-bottom: 4px;
      color: var(--text);
      font-size: 14px;
    }

    .model-nav-item.active strong {
      color: var(--primary);
    }

    .model-badge {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      background: #eef4ff;
      color: var(--primary);
      font-size: 11px;
      font-weight: 700;
      white-space: nowrap;
    }

    .model-panel {
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #fff;
      padding: 18px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
      margin-bottom: 16px;
    }

    .model-panel:last-child {
      margin-bottom: 0;
    }

    .model-panel-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
      flex-wrap: wrap;
    }

    .model-panel-head h3,
    .model-panel-head h4 {
      margin: 0;
      color: var(--text);
    }

    .model-panel-head p {
      margin: 6px 0 0;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.8;
      max-width: 760px;
    }

    .model-mode-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 14px;
    }

    .model-mode-card {
      border: 1px solid #edf0f3;
      border-radius: 12px;
      padding: 14px;
      background: #fafbfc;
    }

    .model-mode-card strong {
      display: block;
      color: var(--text);
      margin-bottom: 8px;
      font-size: 14px;
    }

    .model-mode-card p {
      margin: 0;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.8;
    }

    .model-inline-note {
      margin-top: 12px;
      padding: 12px 14px;
      border-radius: 12px;
      background: #f7faff;
      border: 1px solid #e6eefc;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.8;
    }

    .model-kv-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 14px;
    }

    .model-switch-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 12px 14px;
      border-radius: 12px;
      background: #fafbfc;
      border: 1px solid #edf0f3;
      margin-bottom: 14px;
    }

    .switch-chip {
      display: inline-flex;
      align-items: center;
      padding: 6px 12px;
      border-radius: 999px;
      background: rgba(0, 180, 42, 0.08);
      color: var(--success);
      font-size: 12px;
      font-weight: 700;
    }

    .switch-chip.is-off {
      background: rgba(134, 144, 156, 0.12);
      color: var(--text-secondary);
    }

    .switch-toggle {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      cursor: pointer;
      color: var(--text);
      font-size: 13px;
      font-weight: 600;
    }

    .switch-toggle input {
      display: none;
    }

    .switch-toggle-slider {
      position: relative;
      width: 40px;
      height: 22px;
      border-radius: 999px;
      background: #d9dfe7;
      transition: background 0.2s ease;
      flex: 0 0 auto;
    }

    .switch-toggle-slider::after {
      content: '';
      position: absolute;
      top: 3px;
      left: 3px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: #fff;
      box-shadow: 0 1px 4px rgba(15, 23, 42, 0.18);
      transition: transform 0.2s ease;
    }

    .switch-toggle input:checked + .switch-toggle-slider {
      background: var(--primary);
    }

    .switch-toggle input:checked + .switch-toggle-slider::after {
      transform: translateX(18px);
    }

    .switch-toggle-text {
      white-space: nowrap;
    }

    .model-inherit-summary {
      margin-top: 10px;
      padding: 10px 12px;
      border-radius: 12px;
      background: #f7faff;
      border: 1px dashed #d5e3ff;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.7;
    }

    .model-panel-muted {
      background: #fcfcfd;
    }

    .model-fields-disabled {
      opacity: 0.52;
    }

    .overlay {
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, 0.38);
      display: none;
      align-items: center;
      justify-content: center;
      z-index: 30;
      padding: 20px;
    }

    .overlay.active {
      display: flex;
    }

    .modal-card {
      width: min(900px, 100%);
      max-height: calc(100vh - 40px);
      overflow: auto;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 20px 40px rgba(15, 23, 42, 0.18);
      border: 1px solid var(--border);
    }

    .modal-header,
    .drawer-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
    }

    .modal-title {
      margin: 0;
      font-size: 20px;
      color: var(--text);
    }

    .modal-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .modal-footer {
      padding: 0 20px 20px;
      display: flex;
      justify-content: flex-end;
      gap: 10px;
      flex-wrap: wrap;
    }

    .close-btn {
      width: 34px;
      height: 34px;
      border: none;
      border-radius: 50%;
      background: #f2f3f5;
      color: var(--text-secondary);
      cursor: pointer;
    }

    .drawer-overlay {
      position: fixed;
      inset: 0;
      background: rgba(15, 23, 42, 0.25);
      display: none;
      z-index: 31;
    }

    .drawer-overlay.active {
      display: block;
    }

    .kb-dataset-tabs,
    .kb-workspace-tabs {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }

    .kb-dataset-tabs {
      margin-bottom: 18px;
    }

    .kb-dataset-tab,
    .kb-workspace-tab {
      border: 1px solid var(--border);
      background: #fff;
      color: var(--text-secondary);
      cursor: pointer;
      font-weight: 700;
    }

    .kb-dataset-tab {
      min-width: 200px;
      text-align: left;
      padding: 14px 16px;
      border-radius: 14px;
    }

    .kb-dataset-tab strong {
      display: block;
      font-size: 14px;
      color: var(--text);
      margin-bottom: 4px;
    }

    .kb-dataset-tab span {
      display: block;
      font-size: 12px;
      color: var(--muted);
      line-height: 1.6;
    }

    .kb-dataset-tab.active,
    .kb-workspace-tab.active {
      background: var(--primary-light);
      border-color: #cfe0ff;
      color: var(--primary);
    }

    .kb-workspace-tab {
      padding: 10px 16px;
      border-radius: 999px;
    }

    .kb-dataset-panel,
    .kb-workspace-panel {
      display: none;
    }

    .kb-dataset-panel.active,
    .kb-workspace-panel.active {
      display: block;
    }

    .kb-workspace-head {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: flex-start;
      margin-bottom: 18px;
      padding: 18px;
      border: 1px solid #edf0f3;
      border-radius: 14px;
      background: #fbfcff;
    }

    .kb-workspace-head h4 {
      margin: 0 0 8px;
      font-size: 18px;
      color: var(--text);
    }

    .kb-workspace-head p {
      margin: 0;
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .kb-workspace-actions {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }

    .kb-inline-meta {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 10px;
    }

    .kb-inline-badge {
      display: inline-flex;
      align-items: center;
      padding: 6px 10px;
      border-radius: 999px;
      font-size: 12px;
      font-weight: 600;
      background: #f3f5f8;
      color: var(--text-secondary);
    }

    .kb-stat-strip {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      margin: 16px 0 18px;
    }

    .kb-stat-tile {
      padding: 14px;
      border: 1px solid #edf0f3;
      border-radius: 12px;
      background: #fff;
    }

    .kb-stat-tile .label {
      font-size: 12px;
      color: var(--muted);
      margin-bottom: 6px;
    }

    .kb-stat-tile .value {
      font-size: 24px;
      font-weight: 700;
      color: var(--text);
    }

    .kb-toolbar-block {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      align-items: center;
      margin: 16px 0;
      flex-wrap: wrap;
    }

    .kb-toolbar-filters {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      align-items: center;
    }

    .kb-input-lite {
      min-width: 220px;
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 10px 12px;
      background: #fff;
      outline: none;
    }

    .kb-import-grid {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 16px;
    }

    .kb-import-card {
      border: 1px solid #edf0f3;
      border-radius: 14px;
      background: #fff;
      padding: 16px;
    }

    .kb-import-card h4 {
      margin: 0 0 8px;
      color: var(--text);
      font-size: 15px;
    }

    .kb-import-card p {
      margin: 0;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.8;
    }

    .kb-source-list {
      display: grid;
      gap: 12px;
      margin-top: 14px;
    }

    .kb-source-item {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      padding: 14px;
      border-radius: 12px;
      border: 1px solid #edf0f3;
      background: #fbfcfe;
      align-items: center;
    }

    .kb-source-item strong {
      display: block;
      color: var(--text);
      margin-bottom: 4px;
      font-size: 14px;
    }

    .kb-source-item span {
      display: block;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.7;
    }

    .kb-dropzone {
      margin-top: 14px;
      padding: 24px 18px;
      border: 1px dashed #cfd8e3;
      border-radius: 14px;
      background: #fafcff;
      text-align: center;
      color: var(--text-secondary);
      line-height: 1.8;
      font-size: 13px;
    }

    .kb-setting-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 16px;
    }

    .kb-doc-summary {
      color: var(--muted);
      font-size: 12px;
      margin: -4px 0 12px;
    }

    .kb-doc-empty {
      display: none;
      border: 1px dashed #d6dfeb;
      border-radius: 14px;
      padding: 18px;
      text-align: center;
      color: var(--muted);
      background: #fafcff;
      font-size: 13px;
      margin-top: 12px;
    }

    .kb-doc-empty.active {
      display: block;
    }

    .kb-preview-card {
      margin-top: 16px;
      border: 1px solid #edf0f3;
      border-radius: 14px;
      background: #fbfcfe;
      padding: 16px;
    }

    .kb-preview-card h4 {
      margin: 0 0 6px;
      font-size: 15px;
      color: var(--text);
    }

    .kb-preview-meta {
      color: var(--muted);
      font-size: 12px;
      margin-bottom: 12px;
    }

    .kb-preview-list {
      display: grid;
      gap: 10px;
    }

    .kb-preview-item {
      border: 1px solid #e6ebf2;
      border-radius: 12px;
      background: #fff;
      padding: 12px 14px;
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .kb-preview-item strong {
      display: block;
      color: var(--text);
      margin-bottom: 4px;
      font-size: 12px;
    }

    .kb-source-item.active {
      border-color: #cfe0ff;
      background: var(--primary-light);
    }

    .kb-create-modal {
      width: min(1040px, calc(100vw - 32px));
    }

    .kb-create-shell {
      display: grid;
      grid-template-columns: 280px minmax(0, 1fr);
      gap: 18px;
    }

    .kb-create-aside {
      border: 1px solid #e6ebf2;
      border-radius: 18px;
      padding: 18px;
      background: linear-gradient(180deg, #f7faff 0%, #ffffff 100%);
    }

    .kb-create-badge {
      display: inline-flex;
      align-items: center;
      padding: 5px 10px;
      border-radius: 999px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .kb-create-aside h4 {
      margin: 0;
      font-size: 20px;
      color: var(--text);
    }

    .kb-create-aside p {
      margin: 10px 0 0;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.8;
    }

    .kb-create-step-list {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .kb-create-step {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      padding: 12px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid #edf2f8;
    }

    .kb-create-step-index {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: #fff;
      font-size: 12px;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 1px;
    }

    .kb-create-step strong {
      display: block;
      color: var(--text);
      font-size: 13px;
      margin-bottom: 4px;
    }

    .kb-create-step span {
      display: block;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.7;
    }

    .kb-create-body {
      display: grid;
      gap: 16px;
    }

    .kb-create-section {
      border: 1px solid #e8edf4;
      border-radius: 18px;
      background: #fff;
      padding: 18px;
    }

    .kb-create-section-title {
      margin: 0;
      font-size: 15px;
      color: var(--text);
    }

    .kb-create-section-desc {
      margin: 6px 0 0;
      font-size: 12px;
      color: var(--muted);
      line-height: 1.7;
    }

    .kb-method-picker {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin-top: 16px;
    }

    .kb-method-option {
      border: 1px solid #e6ebf2;
      border-radius: 16px;
      padding: 16px;
      background: #fff;
      cursor: pointer;
      text-align: left;
      transition: border-color .2s ease, background .2s ease, box-shadow .2s ease, transform .2s ease;
    }

    .kb-method-option:hover {
      border-color: #cfe0ff;
      box-shadow: 0 8px 18px rgba(24, 95, 255, 0.08);
      transform: translateY(-1px);
    }

    .kb-method-option strong {
      display: block;
      color: var(--text);
      margin-bottom: 6px;
      font-size: 14px;
    }

    .kb-method-option span {
      display: block;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.7;
    }

    .kb-method-meta {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 12px;
    }

    .kb-method-chip {
      display: inline-flex;
      align-items: center;
      padding: 4px 8px;
      border-radius: 999px;
      background: #f5f7fa;
      color: var(--muted);
      font-size: 11px;
    }

    .kb-method-option.active {
      border-color: #cfe0ff;
      background: var(--primary-light);
      box-shadow: 0 10px 20px rgba(24, 95, 255, 0.08);
    }

    .kb-create-summary-grid {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 14px;
      margin-top: 16px;
    }

    .kb-create-summary-card,
    .kb-create-guide-card {
      border-radius: 16px;
      padding: 16px;
    }

    .kb-create-summary-card {
      background: linear-gradient(135deg, #f5f9ff 0%, #eef4ff 100%);
      border: 1px solid #d9e5ff;
    }

    .kb-create-guide-card {
      background: #fbfcfe;
      border: 1px solid #edf2f8;
    }

    .kb-create-summary-card h5,
    .kb-create-guide-card h5 {
      margin: 0 0 10px;
      font-size: 14px;
      color: var(--text);
    }

    .kb-create-summary-card p,
    .kb-create-guide-card p {
      margin: 0;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.8;
    }

    .kb-create-kv {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .kb-create-kv-item {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      padding-top: 10px;
      border-top: 1px dashed rgba(24, 95, 255, 0.15);
      font-size: 12px;
    }

    .kb-create-kv-item:first-child {
      border-top: none;
      padding-top: 0;
    }

    .kb-create-kv-item span:first-child {
      color: var(--muted);
      white-space: nowrap;
    }

    .kb-create-kv-item span:last-child {
      color: var(--text);
      font-weight: 700;
      text-align: right;
    }

    .kb-create-hint {
      margin-top: 14px;
      padding: 14px 16px;
      border-radius: 14px;
      background: #f7f9fc;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.8;
      border: 1px solid #edf2f8;
    }

    .kb-create-tip-list {
      display: grid;
      gap: 10px;
      margin-top: 14px;
    }

    .kb-create-tip {
      display: flex;
      gap: 10px;
      align-items: flex-start;
      padding: 12px 14px;
      border-radius: 14px;
      background: #fbfcfe;
      border: 1px solid #edf2f8;
    }

    .kb-create-tip i {
      color: var(--primary);
      margin-top: 2px;
    }

    .kb-create-tip strong {
      display: block;
      font-size: 12px;
      color: var(--text);
      margin-bottom: 4px;
    }

    .kb-create-tip span {
      display: block;
      font-size: 12px;
      line-height: 1.7;
      color: var(--text-secondary);
    }

    .kb-create-form-panels {
      margin-top: 16px;
    }

    .kb-create-form-panel {
      display: none;
      border: 1px solid #edf2f8;
      border-radius: 16px;
      background: #fcfdff;
      padding: 16px;
    }

    .kb-create-form-panel.active {
      display: block;
    }

    .kb-create-form-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 14px;
      flex-wrap: wrap;
    }

    .kb-create-form-head h5 {
      margin: 0;
      font-size: 14px;
      color: var(--text);
    }

    .kb-create-form-head p {
      margin: 6px 0 0;
      color: var(--muted);
      font-size: 12px;
      line-height: 1.7;
      max-width: 640px;
    }

    .kb-create-form-tag {
      display: inline-flex;
      align-items: center;
      padding: 4px 10px;
      border-radius: 999px;
      background: #eef4ff;
      color: var(--primary);
      font-size: 11px;
      font-weight: 700;
    }

    .kb-upload-dropzone {
      border: 1px dashed #cddcf7;
      border-radius: 14px;
      background: linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
      padding: 18px;
    }

    .kb-upload-dropzone strong {
      display: block;
      color: var(--text);
      font-size: 13px;
      margin-bottom: 6px;
    }

    .kb-upload-dropzone p {
      margin: 0;
      color: var(--text-secondary);
      font-size: 12px;
      line-height: 1.8;
    }

    .kb-upload-filelist {
      display: grid;
      gap: 8px;
      margin-top: 12px;
    }

    .kb-upload-fileitem {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 10px 12px;
      border-radius: 12px;
      background: #fff;
      border: 1px solid #edf2f8;
      font-size: 12px;
      color: var(--text-secondary);
    }

    .kb-upload-fileitem strong {
      color: var(--text);
      font-size: 12px;
    }

    .kb-create-checklist {
      display: grid;
      gap: 8px;
      margin-top: 10px;
    }

    .kb-create-check {
      display: flex;
      align-items: center;
      gap: 8px;
      color: var(--text-secondary);
      font-size: 12px;
    }

    .kb-create-check input {
      margin: 0;
    }

    .kb-maint-current {
      display: inline-flex;
      align-items: center;
      padding: 6px 12px;
      border-radius: 999px;
      background: var(--primary-light);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .kb-maint-meta {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
      margin-top: 12px;
    }

    .filter-summary {
      color: var(--muted);
      font-size: 12px;
      margin-top: -4px;
      margin-bottom: 12px;
    }

    .interactive-filter {
      cursor: pointer;
      transition: all .18s ease;
    }

    .interactive-filter:hover {
      background: #eef3ff;
      color: var(--primary);
    }

    .empty-state {
      display: none;
      border: 1px dashed var(--border);
      border-radius: 12px;
      padding: 18px;
      text-align: center;
      color: var(--muted);
      font-size: 13px;
      background: #fafbfc;
      margin-top: 12px;
    }

    .empty-state.active {
      display: block;
    }

    .reference-panel {
      margin-top: 14px;
      border: 1px solid var(--border);
      border-radius: 14px;
      background: #fbfcff;
      padding: 16px;
    }

    .reference-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }

    .reference-title {
      font-size: 15px;
      font-weight: 800;
      color: var(--text);
    }

    .reference-desc {
      color: var(--muted);
      font-size: 12px;
    }

    .reference-list {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
    }

    .reference-card {
      border: 1px solid #e8edf8;
      border-radius: 12px;
      background: #fff;
      padding: 14px;
    }

    .reference-card h4 {
      margin: 0 0 8px;
      font-size: 14px;
      color: var(--text);
    }

    .reference-card p {
      margin: 0 0 10px;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.7;
    }

    .reference-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
      color: var(--muted);
      font-size: 12px;
    }

    @media (max-width: 1200px) {
      .workspace {
        grid-template-columns: 360px minmax(0, 1fr);
      }
      .stats-grid,
      .pipeline-grid,
      .kb-card-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
      .reference-list {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 900px) {
      .layout {
        grid-template-columns: 220px minmax(0, 1fr);
      }
      .workspace {
        grid-template-columns: 340px minmax(0, 1fr);
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .reply-basic-grid,
      .editor-grid {
        grid-template-columns: 1fr;
      }
      .reply-editor-topbar {
        grid-template-columns: 1fr;
      }
      .reply-editor-side.right {
        justify-content: flex-start;
      }
      .admin-layout,
      .model-layout,
      .kb-layout,
      .kb-create-shell,
      .stats-grid,
      .pipeline-grid,
      .kb-card-grid,
      .model-mode-grid,
      .model-kv-grid,
      .kb-stat-strip,
      .kb-import-grid,
      .kb-method-picker,
      .kb-create-summary-grid,
      .kb-setting-grid,
      .kv-grid,
      .field-grid,
      .permission-layout,
      .check-grid {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .topbar {
        padding: 0 12px;
      }
      .brand-subtitle {
        display: none;
      }
      .layout {
        grid-template-columns: 1fr;
      }
      .sidebar {
        display: none;
      }
      .workspace {
        grid-template-columns: 1fr;
        grid-template-rows: 320px minmax(0, 1fr);
      }
      .page-view {
        padding: 12px;
      }
      .mail-detail-area {
        grid-template-columns: 1fr;
        grid-template-rows: auto minmax(0, 1fr);
      }
      .mail-tabs {
        flex-direction: row;
        overflow: auto;
      }
      .mail-tab {
        border-right: 1px solid #f0f1f5;
      }
      .resize-handle {
        display: none;
      }
      .panel-title {
        font-size: 22px;
      }
    }

    /* === 拆页后的少量补丁 === */
    a.menu-item { text-decoration: none; color: var(--text-secondary); }
    a.menu-item.active { color: var(--primary); }

    /* === AccountListTab 组件样式 === */
    .accounts-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
      gap: 16px;
      margin-bottom: 24px;
    }

    .account-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 18px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
      transition: box-shadow 0.2s ease, transform 0.2s ease;
    }

    .account-card:hover {
      box-shadow: 0 4px 16px rgba(29, 33, 41, 0.08);
      transform: translateY(-2px);
    }

    .account-header {
      display: flex;
      align-items: center;
      gap: 10px;
      padding-bottom: 14px;
      margin-bottom: 14px;
      border-bottom: 1px solid var(--border);
    }

    .account-email {
      font-size: 15px;
      font-weight: 700;
      color: var(--text);
      word-break: break-all;
    }

    .account-info {
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 16px;
    }

    .info-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      font-size: 13px;
    }

    .info-label {
      color: var(--muted);
      font-weight: 600;
      white-space: nowrap;
    }

    .info-value {
      color: var(--text-secondary);
      text-align: right;
      word-break: break-all;
    }

    .account-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .sync-progress-container {
      display: flex;
      align-items: center;
      gap: 10px;
      flex: 1;
      min-width: 0;
    }

    .sync-progress-bar {
      flex: 1;
      height: 8px;
      background: #e5e6eb;
      border-radius: 999px;
      overflow: hidden;
      min-width: 0;
    }

    .sync-progress-fill {
      height: 100%;
      background: linear-gradient(90deg, var(--primary), #4e93ff);
      border-radius: 999px;
      transition: width 0.3s ease;
    }

    .sync-progress-text {
      font-size: 12px;
      font-weight: 700;
      color: var(--primary);
      white-space: nowrap;
      min-width: 36px;
      text-align: right;
    }

    .help-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 14px;
      padding: 20px;
      box-shadow: 0 2px 10px rgba(29, 33, 41, 0.03);
    }

    .help-card h3 {
      margin: 0 0 14px;
      font-size: 16px;
      font-weight: 800;
      color: var(--text);
    }

    .help-card ol {
      margin: 0;
      padding-left: 20px;
      color: var(--text-secondary);
      font-size: 13px;
      line-height: 1.9;
    }

    .help-card li {
      margin-bottom: 8px;
    }

    .help-card li:last-child {
      margin-bottom: 0;
    }

    .btn-sm {
      padding: 8px 12px;
      font-size: 13px;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .btn-danger {
      background: var(--danger);
      color: #fff;
    }

    .btn-danger:hover {
      background: #d93636;
    }