:root {
      --bg: #f5f7fa;
      --panel: #ffffff;
      --panel-soft: #f9fafb;
      --line: #e2e8f0;
      --line-strong: #cbd5e1;
      --text: #17202a;
      --muted: #64748b;
      --soft: #eef2f7;
      --primary: #176b87;
      --primary-dark: #0f5d75;
      --ink: #17202a;
      --green: #1f8a5b;
      --amber: #b7791f;
      --red: #c2413a;
      --blue: #2563a8;
      --shadow: 0 18px 42px rgba(15, 23, 42, .08);
      --radius: 8px;
    }

    * { box-sizing: border-box; }

    html,
    body {
      margin: 0;
      min-height: 100%;
      background:
        linear-gradient(120deg, rgba(23, 107, 135, .08), transparent 42%),
        linear-gradient(300deg, rgba(31, 138, 91, .08), transparent 48%),
        var(--bg);
      color: var(--text);
      font: 14px/1.45 "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
      letter-spacing: 0;
    }

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

    button {
      border: 0;
      cursor: pointer;
      color: inherit;
    }

    .hidden { display: none !important; }

    .shell {
      display: grid;
      grid-template-columns: 248px minmax(0, 1fr);
      min-height: 100vh;
    }

    .sidebar {
      display: flex;
      flex-direction: column;
      gap: 18px;
      padding: 18px;
      border-right: 1px solid var(--line);
      background: #fbfcfe;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      min-height: 40px;
      margin-bottom: 0;
    }

    .mark {
      display: grid;
      place-items: center;
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: var(--primary);
      color: #fff;
      font-weight: 800;
      letter-spacing: 0;
    }

    .brand strong {
      display: block;
      font-size: 15px;
      letter-spacing: 0;
    }

    .brand span,
    .muted {
      color: var(--muted);
      font-size: 12px;
    }

    .nav-title {
      margin: 4px 0 -10px;
      color: var(--muted);
      font-size: 11px;
      font-weight: 700;
      letter-spacing: .12em;
      text-transform: uppercase;
    }

    .storage-card {
      margin-top: auto;
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
    }

    .storage-head {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      color: var(--muted);
      font-size: 12px;
    }

    .storage-head strong {
      color: var(--text);
    }

    .storage-bar {
      height: 7px;
      margin: 10px 0 8px;
      overflow: hidden;
      border-radius: 999px;
      background: #e7ebf0;
    }

    .storage-bar span {
      display: block;
      width: 0;
      height: 100%;
      border-radius: inherit;
      background: var(--primary);
      transition: width .2s ease;
    }

    .nav button,
    .space-card {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      min-height: 38px;
      margin-bottom: 4px;
      padding: 0 10px;
      border: 1px solid transparent;
      border-radius: 7px;
      background: transparent;
      text-align: left;
    }

    .nav button.active,
    .space-card.active {
      border-color: transparent;
      background: #e8f2f5;
      color: var(--primary-dark);
      font-weight: 700;
    }

    .space-card {
      display: grid;
      grid-template-columns: 1fr auto;
      background: var(--panel);
      border-color: var(--line);
    }

    .nav button:hover,
    .space-card:hover {
      background: #f0f4f8;
    }

    .space-card small {
      display: block;
      margin-top: 2px;
      color: var(--muted);
      font-weight: 500;
    }

    .pill {
      display: inline-flex;
      align-items: center;
      min-height: 22px;
      padding: 0 8px;
      border-radius: 999px;
      background: var(--soft);
      color: var(--primary-dark);
      font-size: 12px;
      font-weight: 700;
    }

    .main {
      min-width: 0;
      padding: 0;
    }

    .topbar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      min-height: 68px;
      margin-bottom: 0;
      padding: 14px 20px;
      border-bottom: 1px solid var(--line);
      background: rgba(255, 255, 255, .86);
      backdrop-filter: blur(12px);
    }

    .page-title {
      min-width: 220px;
    }

    .page-title h1 {
      margin: 0;
      font-size: 18px;
      line-height: 1.2;
    }

    .page-title p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 12px;
    }

    .search {
      flex: 1;
      max-width: 520px;
      height: 38px;
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel);
    }

    .search input {
      width: 100%;
      border: 0;
      outline: 0;
      background: transparent;
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 7px;
      min-height: 36px;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: 7px;
      background: var(--panel);
      color: var(--text);
      font-weight: 650;
      white-space: nowrap;
    }

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

    .btn.danger {
      border-color: rgba(194, 65, 58, .26);
      background: var(--panel);
      color: var(--red);
    }

    .btn.ghost {
      background: transparent;
    }

    .btn:hover {
      border-color: var(--line-strong);
      background: #f8fafc;
    }

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

    .btn[disabled],
    button[disabled] {
      cursor: not-allowed;
      opacity: .58;
    }

    .tag {
      display: inline-flex;
      align-items: center;
      min-height: 22px;
      padding: 0 8px;
      border-radius: 999px;
      background: var(--soft);
      color: #475569;
      font-size: 12px;
      font-weight: 650;
    }

    .tag.green {
      background: #e7f6ee;
      color: var(--green);
    }

    .tag.blue {
      background: #edf4ff;
      color: var(--blue);
    }

    .view {
      min-width: 0;
    }

    .grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      gap: 16px;
      padding: 18px 20px 20px;
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .card-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      min-height: 52px;
      padding: 0 14px;
      border-bottom: 1px solid var(--line);
    }

    .card-head h2 {
      margin: 0;
      font-size: 16px;
      letter-spacing: 0;
    }

    .card-head p {
      margin: 4px 0 0;
      color: var(--muted);
      font-size: 12px;
    }

    .stats {
      display: none;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      padding: 18px 20px 0;
      margin-bottom: 0;
    }

    .stat {
      padding: 13px 14px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: 0 1px 2px rgba(15, 23, 42, .03);
    }

    .stat strong {
      display: block;
      font-size: 20px;
      line-height: 1.1;
      letter-spacing: 0;
    }

    .table {
      width: 100%;
      border-collapse: collapse;
    }

    .table th,
    .table td {
      height: 48px;
      padding: 0 14px;
      border-bottom: 1px solid var(--line);
      text-align: left;
      vertical-align: middle;
    }

    .table th {
      height: 38px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 650;
      background: var(--panel-soft);
    }

    .table tbody tr {
      transition: background .12s ease;
    }

    .table tbody tr:hover {
      background: #f8fbfc;
    }

    .table tbody tr.selected {
      background: #eef7fa;
      box-shadow: inset 3px 0 0 var(--primary);
    }

    .file-name {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 650;
    }

    .folder-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
      padding: 12px 14px;
      border-bottom: 1px solid var(--line);
      background: var(--panel);
    }

    .folder-bar button {
      min-height: 30px;
      padding: 0 10px;
      border: 1px solid var(--line);
      border-radius: 999px;
      background: var(--panel-soft);
      color: var(--muted);
      font-weight: 650;
    }

    .folder-bar button.active {
      border-color: rgba(23, 107, 135, .22);
      background: #e8f2f5;
      color: var(--primary-dark);
    }

    .folder-actions {
      display: inline-flex;
      gap: 4px;
      margin-left: 6px;
    }

    .folder-actions button {
      min-height: 24px;
      padding: 0 7px;
      font-size: 12px;
    }

    .icon {
      display: grid;
      place-items: center;
      width: 30px;
      height: 30px;
      border-radius: 7px;
      background: #edf5f7;
      color: var(--primary);
      font-weight: 800;
      font-size: 11px;
    }

    .kb-list,
    .activity,
    .admin-list {
      display: grid;
      gap: 10px;
      padding: 14px;
    }

    .kb-item,
    .activity-item,
    .admin-item {
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel-soft);
    }

    .doc-nav {
      width: 100%;
      display: grid;
      gap: 4px;
      text-align: left;
      color: var(--text);
    }

    .doc-nav.active {
      border-color: transparent;
      background: #e8f2f5;
      color: var(--primary-dark);
    }

    .knowledge-layout {
      display: grid;
      grid-template-columns: 280px minmax(0, 1fr) 300px;
      gap: 16px;
      padding: 18px 20px 20px;
    }

    .document-card {
      min-height: calc(100vh - 106px);
    }

    .document-preview {
      min-height: 520px;
      padding: 28px 34px;
      font-size: 15px;
      line-height: 1.8;
    }

    .document-preview h1 {
      font-size: 28px;
    }

    .document-preview h2 {
      margin-top: 24px;
      font-size: 20px;
    }

    .outline-card .admin-list {
      gap: 12px;
    }

    .file-preview-card {
      display: grid;
      place-items: center;
      height: 180px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background:
        linear-gradient(120deg, rgba(23, 107, 135, .08), transparent 48%),
        var(--panel-soft);
      color: var(--primary);
      font-size: 20px;
      font-weight: 800;
    }

    .detail-list {
      display: grid;
      gap: 12px;
    }

    .detail-list div {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      color: var(--muted);
    }

    .detail-list strong {
      color: var(--text);
      text-align: right;
    }

    .detail-actions {
      align-items: stretch;
    }

    .file-detail-empty {
      min-height: 220px;
      display: grid;
      place-items: center;
      align-content: center;
      gap: 6px;
      text-align: center;
    }

    .kb-item strong,
    .admin-item strong {
      display: block;
      margin-bottom: 4px;
    }

    .markdown-body {
      display: grid;
      gap: 8px;
      margin-top: 8px;
      color: var(--text);
    }

    .markdown-body h1,
    .markdown-body h2,
    .markdown-body h3 {
      margin: 8px 0 0;
      letter-spacing: -.03em;
    }

    .markdown-body h1 { font-size: 20px; }
    .markdown-body h2 { font-size: 17px; }
    .markdown-body h3 { font-size: 15px; }

    .markdown-body p,
    .markdown-body ul,
    .markdown-body ol,
    .markdown-body blockquote,
    .markdown-body pre {
      margin: 0;
    }

    .markdown-body ul,
    .markdown-body ol {
      padding-left: 20px;
    }

    .markdown-body blockquote {
      padding-left: 12px;
      border-left: 3px solid var(--line-strong);
      color: var(--muted);
    }

    .markdown-body code {
      padding: 2px 5px;
      border-radius: 7px;
      background: #edf5f7;
      color: var(--primary-dark);
      font-family: "SFMono-Regular", "Menlo", monospace;
      font-size: 12px;
    }

    .markdown-body pre {
      overflow: auto;
      padding: 11px;
      border-radius: 8px;
      background: #18211b;
      color: #f7f3ea;
    }

    .markdown-body pre code {
      padding: 0;
      background: transparent;
      color: inherit;
    }

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

    .version-item {
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel-soft);
    }

    .version-item header {
      display: flex;
      justify-content: space-between;
      gap: 10px;
      margin-bottom: 8px;
      color: var(--muted);
      font-size: 12px;
      font-weight: 800;
    }

    .pagination {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      padding: 0 16px 16px;
      color: var(--muted);
      font-size: 13px;
      font-weight: 650;
    }

    .pagination:empty {
      display: none;
    }

    .pagination .actions {
      padding: 0;
    }

    .share-page {
      min-height: 100vh;
      display: grid;
      place-items: center;
      padding: 24px;
      background:
        linear-gradient(120deg, rgba(23, 107, 135, .10), transparent 42%),
        linear-gradient(300deg, rgba(31, 138, 91, .10), transparent 48%),
        var(--bg);
    }

    .share-card {
      width: min(620px, 100%);
      display: grid;
      gap: 24px;
      padding: 26px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--panel);
      box-shadow: var(--shadow);
    }

    .share-content h1 {
      margin: 0 0 10px;
      font-size: clamp(26px, 5vw, 38px);
      line-height: 1.12;
      letter-spacing: 0;
    }

    .login-screen {
      position: fixed;
      inset: 0;
      z-index: 10;
      display: grid;
      grid-template-columns: minmax(340px, .95fr) minmax(420px, 1.05fr);
      background:
        linear-gradient(120deg, rgba(23, 107, 135, .10), transparent 42%),
        linear-gradient(300deg, rgba(31, 138, 91, .10), transparent 48%),
        var(--bg);
    }

    .login-copy {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      padding: 42px;
      border-right: 1px solid var(--line);
      background: rgba(255, 255, 255, .54);
    }

    .login-copy h1 {
      max-width: 560px;
      margin: 48px 0 14px;
      font-size: 38px;
      line-height: 1.12;
      letter-spacing: 0;
    }

    .login-copy p {
      max-width: 480px;
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .feature-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 10px;
      max-width: 600px;
    }

    .feature {
      padding: 12px;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
    }

    .login-panel {
      display: grid;
      place-items: center;
      padding: 32px;
    }

    .login-card {
      width: min(440px, 100%);
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .tabs {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      padding: 5px;
      border-bottom: 1px solid var(--line);
      background: var(--panel-soft);
    }

    .tabs button {
      min-height: 34px;
      border-radius: 7px;
      background: transparent;
      color: var(--muted);
      font-weight: 500;
    }

    .tabs button.active {
      background: var(--panel);
      color: var(--primary-dark);
      font-weight: 700;
      box-shadow: none;
    }

    .form {
      display: none;
      gap: 12px;
      padding: 22px;
    }

    .form.active { display: grid; }

    .field {
      display: grid;
      gap: 7px;
    }

    .field span {
      color: var(--muted);
      font-size: 12px;
      font-weight: 500;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      padding: 0 12px;
      border: 1px solid var(--line);
      border-radius: 7px;
      outline: 0;
      background: #fff;
    }

    .field input,
    .field select {
      height: 36px;
    }

    .field textarea {
      min-height: 108px;
      padding: 11px 12px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(23, 107, 135, .12);
    }

    .field-error {
      min-height: 17px;
      color: var(--red);
      font-size: 12px;
      font-weight: 700;
    }

    .notice {
      padding: 12px;
      border: 1px solid #e5d3ad;
      border-radius: 8px;
      background: #fff7e8;
      color: #745019;
      font-size: 13px;
    }

    .admin-page {
      display: none;
      grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
      gap: 16px;
      padding: 18px 20px 20px;
    }

    .admin-page.active { display: grid; }

    .project-header {
      display: none;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin: 0;
      padding: 18px 20px 0;
      border: 1px solid var(--line);
      border-width: 0 0 1px;
      border-radius: 0;
      background: transparent;
    }

    .project-header h1 {
      margin: 0;
      font-size: 22px;
      letter-spacing: 0;
    }

    .toast {
      position: fixed;
      right: 22px;
      bottom: 22px;
      z-index: 20;
      min-width: 240px;
      padding: 12px 14px;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--ink);
      color: #fff;
      box-shadow: var(--shadow);
      transform: translateY(18px);
      opacity: 0;
      pointer-events: none;
      transition: .2s ease;
    }

    .toast.show {
      transform: translateY(0);
      opacity: 1;
    }

    .modal-layer {
      position: fixed;
      inset: 0;
      z-index: 30;
      display: none;
      place-items: center;
      padding: 22px;
      background: rgba(15, 23, 42, .42);
      backdrop-filter: blur(10px);
    }

    .modal-layer.active { display: grid; }

    .modal-card {
      width: min(640px, 100%);
      max-height: calc(100vh - 44px);
      display: grid;
      gap: 14px;
      padding: 16px;
      overflow: auto;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--panel);
      box-shadow: 0 28px 70px rgba(15, 23, 42, .24);
    }

    .preview-card {
      width: min(980px, 100%);
    }

    .preview-body {
      min-height: min(68vh, 680px);
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: 8px;
      background: var(--panel-soft);
    }

    .preview-body iframe {
      display: block;
      width: 100%;
      height: min(68vh, 680px);
      border: 0;
      background: #fff;
    }

    .preview-empty {
      min-height: 260px;
      display: grid;
      place-items: center;
      align-content: center;
      gap: 6px;
      padding: 24px;
      text-align: center;
    }

    .modal-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
      padding-bottom: 12px;
      border-bottom: 1px solid var(--line);
    }

    .modal-head h2 {
      margin: 0;
      font-size: 20px;
      letter-spacing: 0;
    }

    .modal-head p {
      margin: 4px 0 0;
    }

    .danger-copy {
      display: grid;
      gap: 10px;
      padding: 14px;
      border: 1px solid #e8c4c1;
      border-radius: 8px;
      background: #fff6f5;
      color: #6f2622;
    }

    .danger-copy strong {
      color: var(--red);
      font-size: 15px;
    }

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

    .form-grid .wide { grid-column: 1 / -1; }

    @media (max-width: 980px) {
      .shell { grid-template-columns: 1fr; }
      .sidebar { position: static; }
      .grid,
      .knowledge-layout,
      .admin-page,
      .login-screen { grid-template-columns: 1fr; }
      .login-copy { display: none; }
      .stats { grid-template-columns: repeat(2, 1fr); }
      .topbar { align-items: stretch; flex-direction: column; }
      .search { max-width: none; }
      .form-grid { grid-template-columns: 1fr; }
      .project-header,
      .stats,
      .grid,
      .knowledge-layout,
      .admin-page { padding-left: 14px; padding-right: 14px; }
    }

    /* Prototype layout overrides: keep existing JS hooks, but let the UI follow the original demo structure. */
    .app {
      display: grid;
      grid-template-columns: 248px minmax(0, 1fr);
      min-height: 100vh;
      background: var(--bg);
    }

    .app .sidebar {
      display: flex;
      flex-direction: column;
      gap: 18px;
      padding: 18px;
      border-right: 1px solid var(--line);
      background: #fbfcfe;
    }

    .app .main {
      display: grid;
      grid-template-rows: auto minmax(0, 1fr);
      min-width: 0;
    }

    .app .topbar {
      display: flex;
      align-items: center;
      gap: 12px;
      min-height: 68px;
      padding: 14px 20px;
      border-bottom: 1px solid var(--line);
      background: rgba(255, 255, 255, .85);
      backdrop-filter: blur(12px);
    }

    .app .topbar .actions {
      margin-left: auto;
    }

    .app .search {
      position: relative;
      flex: 1;
      max-width: 520px;
      height: 38px;
    }

    .app .search input {
      width: 100%;
      height: 38px;
      padding: 0 12px;
      border: 0;
      outline: none;
      background: transparent;
      color: var(--text);
    }

    .app .grid {
      display: block;
      padding: 18px 20px 20px;
    }

    .workspace {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 300px;
      gap: 16px;
      height: calc(100vh - 106px);
      min-height: 560px;
    }

    .panel,
    .side-panel {
      min-width: 0;
      border: 1px solid var(--line);
      border-radius: var(--radius);
      background: var(--panel);
      box-shadow: var(--shadow);
      overflow: hidden;
    }

    .panel-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      min-height: 52px;
      padding: 0 14px;
      border-bottom: 1px solid var(--line);
    }

    .side-panel {
      display: flex;
      flex-direction: column;
      padding: 14px;
    }

    .side-panel .panel-head {
      min-height: auto;
      padding: 0 0 12px;
      border-bottom: 0;
    }

    .folder-bar {
      border-bottom: 1px solid var(--line);
      background: var(--panel);
    }

    .activity {
      padding: 0;
      gap: 14px;
    }

    .file-preview-card {
      height: 174px;
      margin-bottom: 14px;
    }

    .detail-list {
      margin-top: 0;
    }

    .detail-list div {
      font-size: 13px;
    }

    .detail-actions {
      margin-top: 14px;
    }

    .knowledge-layout {
      grid-template-columns: 260px minmax(0, 1fr) 260px;
      gap: 16px;
      height: calc(100vh - 106px);
      min-height: 560px;
      padding: 18px 20px 20px;
    }

    .doc-tree {
      padding: 0;
    }

    .doc-tree .kb-list {
      padding: 12px;
    }

    .doc-nav {
      min-height: 34px;
      padding: 8px;
      border: 0;
      border-radius: 6px;
      background: transparent;
    }

    .doc-nav.active {
      background: #e8f2f5;
      color: var(--primary-dark);
    }

    .document-card {
      display: grid;
      grid-template-rows: auto minmax(0, 1fr);
      min-height: 0;
    }

    .document-preview {
      min-height: 0;
      overflow: auto;
      padding: 24px 34px;
    }

    .outline-card {
      padding: 0;
    }

    .outline-card .admin-list {
      padding: 14px;
    }

    .admin-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr;
      gap: 16px;
      height: calc(100vh - 106px);
      min-height: 560px;
      padding: 18px 20px 20px;
    }

    .admin-grid .card:nth-child(3) {
      grid-column: 1 / -1;
    }

    @media (max-width: 980px) {
      .app {
        grid-template-columns: 1fr;
      }

      .app .sidebar {
        position: sticky;
        top: 0;
        z-index: 5;
        flex-direction: row;
        align-items: center;
        overflow-x: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .workspace,
      .knowledge-layout,
      .admin-grid {
        grid-template-columns: 1fr;
        height: auto;
      }

      .side-panel {
        display: none;
      }
    }