@media (min-width: 921px) {
  .main.main-viewport {
    --stack-shell-shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.18);
    --stack-shell-shadow-heavy: 0 30px 60px rgba(0, 0, 0, 0.32);
  }

  .content-area {
    padding: 0;
  }

  body.panel-fullscreen-mode .content-area {
    padding: 0;
  }

  .cascade-stage {
    display: flex;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .pinned-viewport {
    display: flex;
    padding: 5.5rem 0 3rem 3rem;
    overflow: visible;
    z-index: 100;
    gap: 1rem;
    flex-shrink: 0;
    transition: width 0.5s ease;
  }

  .pane-region {
    position: relative;
    flex: 1;
    min-width: 0;
    margin-left: 0;
    display: flex;
    overflow: hidden;
  }

  .panes-viewport {
    flex: 1;
    display: flex;
    width: 100%;
    height: 100%;
    padding: 5.5rem 3rem 3rem 1rem;
    overflow-x: auto;
    overflow-y: hidden;
    align-items: flex-start;
    gap: 0;
    scrollbar-width: none;
    scroll-snap-type: none;
    transition: all 0.4s ease;
  }

  .panes-viewport::-webkit-scrollbar {
    display: none;
  }

  .pane.gen-pane {
    width: min(320px, 85vw);
    min-width: min(320px, 85vw);
    height: calc(100vh - 8.5rem);
    position: relative;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: var(--stack-shell-shadow-soft);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    opacity: 0.6;
    filter: grayscale(20%);
    transform: scale(0.96);
    transform-origin: center left;
    margin-left: -40px;
    transition:
      width 0.7s cubic-bezier(0.22, 1, 0.36, 1),
      min-width 0.7s cubic-bezier(0.22, 1, 0.36, 1),
      margin 0.7s cubic-bezier(0.22, 1, 0.36, 1),
      opacity 0.5s ease,
      filter 0.5s ease,
      transform 0.7s cubic-bezier(0.22, 1, 0.36, 1),
      box-shadow 0.4s ease,
      border-color 0.4s ease;
    flex-shrink: 0;
    animation: none;
    scroll-snap-align: unset;
    z-index: 1;
  }

  .panes-viewport .pane.gen-pane:first-child {
    margin-left: 0;
  }

  .pinned-viewport .pane.gen-pane {
    margin-left: 0;
    transform: scale(1);
    filter: grayscale(0%);
    opacity: 1;
    border-color: var(--accent);
    box-shadow: var(--stack-shell-shadow-heavy);
  }

  .pane.gen-pane.is-focused {
    width: min(720px, 85vw);
    min-width: min(720px, 85vw);
    opacity: 1;
    filter: grayscale(0%);
    cursor: default;
    transform: scale(1) translateY(-4px);
    margin-left: 10px;
    margin-right: 20px;
    box-shadow: var(--stack-shell-shadow-heavy);
    border-color: var(--border-strong);
    z-index: 3;
  }

  .pane.gen-pane .pane-inner.gen-pane-inner {
    width: min(720px, 85vw);
    min-width: min(720px, 85vw);
    padding: 3rem clamp(1.5rem, 5vw, 4rem);
    height: 100%;
    overflow-y: auto;
    scrollbar-width: none;
    display: flex;
    flex-direction: column;
    transition:
      width 0.7s cubic-bezier(0.22, 1, 0.36, 1),
      min-width 0.7s cubic-bezier(0.22, 1, 0.36, 1);
  }

  .pane.gen-pane .pane-inner.gen-pane-inner::-webkit-scrollbar {
    display: none;
  }

  .pane.gen-pane.is-resizing-right,
  .pane.gen-pane.is-resizing-left,
  .pane.gen-pane.is-resizing-right .pane-inner.gen-pane-inner,
  .pane.gen-pane.is-resizing-left .pane-inner.gen-pane-inner {
    transition: none !important;
  }

  .resize-handle,
  .resize-handle-left {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 8px;
    cursor: ew-resize;
    z-index: 100;
    transition: background 0.2s ease;
  }

  .resize-handle {
    right: 0;
  }

  .resize-handle-left {
    left: 0;
  }

  .resize-handle:hover,
  .pane.gen-pane.is-resizing-right .resize-handle {
    background: rgba(180, 140, 70, 0.3);
  }

  .resize-handle-left:hover,
  .pane.gen-pane.is-resizing-left .resize-handle-left {
    background: rgba(180, 140, 70, 0.3);
  }

  .pane.gen-pane.pane-shared-surface {
    width: min(620px, calc(100vw - 8rem));
    min-width: min(620px, calc(100vw - 8rem));
    height: 100%;
    min-height: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    scroll-snap-align: start;
    position: relative;
    z-index: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px 16px 0 0;
    border-bottom: none;
    box-shadow: none;
    overflow: visible;
    transition: all 0.6s var(--ease-emph);
    animation: paneEnter 0.5s var(--ease-emph) forwards;
  }

  .pane.gen-pane.pane-shared-surface:first-child {
    margin-left: 0;
  }

  .pane.gen-pane.is-focused.pane-shared-surface {
    width: min(620px, calc(100vw - 8rem));
    min-width: min(620px, calc(100vw - 8rem));
    height: 100%;
    min-height: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    box-shadow: none;
    border-color: var(--border);
    z-index: 3;
    overflow: visible;
  }

  .pane.gen-pane.pane-type-settings {
    width: min(1120px, calc(100vw - 7rem));
    min-width: min(1120px, calc(100vw - 7rem));
  }

  .pane.gen-pane.is-focused.pane-type-settings {
    width: min(1120px, calc(100vw - 7rem));
    min-width: min(1120px, calc(100vw - 7rem));
  }

  .pane.gen-pane.pane-type-settings .pane-inner.gen-pane-inner,
  .pane.gen-pane.is-focused.pane-type-settings .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 100%;
    max-width: none;
    padding: 2rem 1.25rem 2.5rem;
  }

  .pane.gen-pane.pane-mail-thread,
  .pane.gen-pane.pane-mail-inbox {
    width: 580px;
    min-width: 580px;
    height: 100%;
    min-height: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    scroll-snap-align: start;
    position: relative;
    z-index: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-bottom: none;
    border-radius: 12px;
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    overflow: hidden;
    transition: all 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    animation: plusoMailFadeLeft 0.5s cubic-bezier(0.22, 1, 0.36, 1) forwards;
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.pane-mail-thread,
  body:not(.panel-fullscreen-mode) .pane.gen-pane.pane-mail-inbox {
    cursor: pointer;
    opacity: 0.6;
    filter: grayscale(20%);
    transform: scale(0.96);
    transform-origin: center left;
    margin-left: -40px;
    z-index: 1;
  }

  body:not(.panel-fullscreen-mode) .panes-viewport .pane.gen-pane:first-child.pane-mail-thread,
  body:not(.panel-fullscreen-mode) .panes-viewport .pane.gen-pane:first-child.pane-mail-inbox {
    margin-left: 0;
  }

  .pane.gen-pane.is-focused.pane-mail-thread,
  .pane.gen-pane.is-focused.pane-mail-inbox {
    width: 580px;
    min-width: 580px;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    border-color: var(--border);
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.15);
    z-index: 1;
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.is-focused.pane-mail-thread,
  body:not(.panel-fullscreen-mode) .pane.gen-pane.is-focused.pane-mail-inbox {
    margin-left: 10px;
    margin-right: 20px;
    transform: scale(1) translateY(-4px);
    cursor: default;
    opacity: 1;
    filter: grayscale(0%);
    border-color: var(--border-strong);
    box-shadow: var(--stack-shell-shadow-heavy);
    z-index: 3;
  }

  .pane.gen-pane.pane-mail-thread .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-mail-inbox .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 0;
    max-width: none;
    height: 100%;
    min-height: 0;
    padding: 2rem 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
  }

  .pane.gen-pane.pane-mail-thread .pane-inner.gen-pane-inner {
    padding: 0;
    overflow: hidden;
  }

  .pane.gen-pane.pane-mail-inbox .pane-inner.gen-pane-inner {
    padding: 0;
    overflow: hidden;
  }

  .pane.gen-pane.pane-type-calendar {
    width: min(620px, calc(100vw - 8rem));
    min-width: min(620px, calc(100vw - 8rem));
    height: 100%;
    min-height: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    scroll-snap-align: start;
    position: relative;
    z-index: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 16px 16px 0 0;
    border-bottom: none;
    box-shadow: none;
    overflow: visible;
    transition: all 0.6s var(--ease-emph);
    animation: paneEnter 0.5s var(--ease-emph) forwards;
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.pane-type-calendar {
    cursor: pointer;
    opacity: 0.6;
    filter: grayscale(20%);
    transform: scale(0.96);
    transform-origin: center left;
    margin-left: -40px;
    z-index: 1;
  }

  body:not(.panel-fullscreen-mode) .panes-viewport .pane.gen-pane:first-child.pane-type-calendar {
    margin-left: 0;
  }

  .pane.gen-pane.is-focused.pane-type-calendar {
    width: min(620px, calc(100vw - 8rem));
    min-width: min(620px, calc(100vw - 8rem));
    height: 100%;
    min-height: 0;
    align-self: stretch;
    margin-left: 0;
    margin-right: 1.5rem;
    opacity: 1;
    filter: grayscale(0%);
    transform: none;
    cursor: default;
    border-color: var(--border);
    box-shadow: none;
    z-index: 1;
    overflow: visible;
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.is-focused.pane-type-calendar {
    margin-left: 10px;
    margin-right: 20px;
    transform: scale(1) translateY(-4px);
    cursor: default;
    opacity: 1;
    filter: grayscale(0%);
    border-color: var(--border-strong);
    box-shadow: var(--stack-shell-shadow-heavy);
    z-index: 3;
  }

  .pane.gen-pane.pane-type-calendar.is-wide,
  .pane.gen-pane.is-focused.pane-type-calendar.is-wide {
    width: min(980px, calc(100vw - 8rem));
    min-width: min(980px, calc(100vw - 8rem));
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.pane-type-task:not(.pane-shared-surface),
  body:not(.panel-fullscreen-mode) .pane.gen-pane.pane-type-task-list:not(.pane-shared-surface) {
    cursor: pointer;
    opacity: 0.6;
    filter: grayscale(20%);
    transform: scale(0.96);
    transform-origin: center left;
    margin-left: -40px;
    z-index: 1;
  }

  body:not(.panel-fullscreen-mode) .panes-viewport .pane.gen-pane:first-child.pane-type-task:not(.pane-shared-surface),
  body:not(.panel-fullscreen-mode) .panes-viewport .pane.gen-pane:first-child.pane-type-task-list:not(.pane-shared-surface) {
    margin-left: 0;
  }

  body:not(.panel-fullscreen-mode) .pane.gen-pane.is-focused.pane-type-task:not(.pane-shared-surface),
  body:not(.panel-fullscreen-mode) .pane.gen-pane.is-focused.pane-type-task-list:not(.pane-shared-surface) {
    margin-left: 10px;
    margin-right: 20px;
    transform: scale(1) translateY(-4px);
    cursor: default;
    opacity: 1;
    filter: grayscale(0%);
    border-color: var(--border-strong);
    box-shadow: var(--stack-shell-shadow-heavy);
    z-index: 3;
  }

  .pane.gen-pane.pane-type-task .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 0;
    max-width: none;
    padding: 0;
    height: 100%;
    min-height: 0;
    overflow-y: auto;
    overflow-x: hidden;
    scrollbar-width: none;
    display: block;
  }

  .pane.gen-pane.pane-type-task .pane-inner.gen-pane-inner::-webkit-scrollbar {
    display: none;
  }

  .pane.gen-pane.pane-type-task-list .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 0;
    max-width: none;
    padding: 0;
    height: 100%;
    min-height: 0;
    overflow: hidden;
    display: block;
  }

  .pane.gen-pane.pane-type-calendar .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 0;
    max-width: none;
    padding: 2.5rem 3rem;
    height: 100%;
    min-height: 0;
    overflow-y: auto;
    scrollbar-width: thin;
    display: block;
  }

  .pane.gen-pane.pane-mail-thread .pane-inner.gen-pane-inner > *,
  .pane.gen-pane.pane-mail-inbox .pane-inner.gen-pane-inner > *,
  .pane.gen-pane.pane-type-task .pane-inner.gen-pane-inner > *,
  .pane.gen-pane.pane-type-task-list .pane-inner.gen-pane-inner > * {
    width: 100%;
    min-width: 0;
    max-width: none;
    height: 100%;
  }

  .pane.gen-pane.pane-type-calendar .pane-inner.gen-pane-inner > * {
    width: 100%;
    min-width: 0;
    max-width: none;
  }

  .pane.gen-pane.pane-has-image-surface:not(.is-zen) .pane-inner.gen-pane-inner {
    width: 100%;
    min-width: 0;
    max-width: none;
    height: 100%;
    padding: calc((100vh - 8.5rem) * 0.05) 0 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
  }

  .pane.gen-pane.pane-shared-surface .zen-tag-label {
    display: none !important;
  }

  .zen-tag-label {
    display: none;
    font-family: var(--sans);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #fff;
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    white-space: nowrap;
    pointer-events: none;
  }

  body.is-stack-mode .panes-viewport {
    overflow: hidden;
    gap: 6px;
  }

  body.is-stack-mode .resize-handle,
  body.is-stack-mode .resize-handle-left,
  body.panel-fullscreen-mode .resize-handle,
  body.panel-fullscreen-mode .resize-handle-left,
  body.is-compare-mode .resize-handle,
  body.is-compare-mode .resize-handle-left {
    display: none !important;
  }

  body.is-stack-mode .pane.gen-pane.pane-shared-surface {
    width: min(620px, calc(100vw - 8rem)) !important;
    min-width: min(620px, calc(100vw - 8rem)) !important;
    margin-left: 0 !important;
    margin-right: 1.5rem !important;
    opacity: 1 !important;
    filter: grayscale(0%) !important;
    transform: none !important;
    background: var(--bg-panel) !important;
    border-color: var(--border) !important;
    box-shadow: none !important;
    cursor: default;
  }

  body.is-stack-mode .pane.gen-pane.pane-mail-thread,
  body.is-stack-mode .pane.gen-pane.pane-mail-inbox {
    width: 580px !important;
    min-width: 580px !important;
    margin-left: 0 !important;
    margin-right: 1.5rem !important;
    opacity: 1 !important;
    filter: grayscale(0%) !important;
    transform: none !important;
    background: var(--bg-panel) !important;
    border-color: var(--border) !important;
    box-shadow: -20px 0 50px rgba(0, 0, 0, 0.15) !important;
    cursor: default;
  }

  body.is-stack-mode .pane.gen-pane.pane-shared-surface .pane-inner.gen-pane-inner {
    opacity: 1 !important;
    pointer-events: auto !important;
    display: flex !important;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused) {
    width: 48px !important;
    min-width: 48px !important;
    cursor: pointer;
    margin-left: 0 !important;
    margin-right: 0 !important;
    transform: none !important;
    opacity: 1 !important;
    filter: grayscale(0%) !important;
    box-shadow: var(--stack-shell-shadow-heavy) !important;
    transition: all 0.5s cubic-bezier(0.22, 1, 0.36, 1);
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused)[data-archetype="amber"] {
    background: #b48c46;
    border-color: #b48c46;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused)[data-archetype="blue"] {
    background: #0ea5e9;
    border-color: #0ea5e9;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused)[data-archetype="violet"] {
    background: #8b5cf6;
    border-color: #8b5cf6;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused)[data-archetype="sage"] {
    background: #10b981;
    border-color: #10b981;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused) .pane-inner.gen-pane-inner {
    opacity: 0;
    pointer-events: none;
    display: none;
  }

  body.is-stack-mode .pane.gen-pane:not(.is-focused) .zen-tag-label {
    display: flex !important;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: rgba(255,255,255,0.9);
    font-size: 0.85rem;
    letter-spacing: 0.25em;
  }

  body.is-stack-mode .pane.gen-pane.is-focused {
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .pane.gen-pane.is-compare-active {
    position: fixed !important;
    top: 0 !important;
    height: 100vh !important;
    width: 50vw !important;
    min-width: 50vw !important;
    margin: 0 !important;
    border-radius: 0 !important;
    z-index: 9000 !important;
    transform: none !important;
    box-shadow: none !important;
    border-top: none !important;
    border-bottom: none !important;
    background: var(--bg-base) !important;
    cursor: default !important;
    opacity: 1 !important;
    filter: grayscale(0%) !important;
  }

  .pane.gen-pane.is-compare-left {
    left: 0 !important;
    border-right: 1px solid var(--border-strong) !important;
    border-left: none !important;
  }

  .pane.gen-pane.is-compare-right {
    left: 50vw !important;
    border-left: none !important;
    border-right: none !important;
  }

  .pane.gen-pane.is-compare-active .pane-inner.gen-pane-inner {
    width: 100% !important;
    min-width: auto !important;
    max-width: 800px !important;
    margin: 0 auto !important;
    padding-top: 5rem !important;
  }

  .pane.gen-pane.is-zen {
    width: 100vw !important;
    min-width: 100vw !important;
    height: 100vh !important;
    margin: 0 !important;
    transform: none !important;
    opacity: 1 !important;
    filter: grayscale(0%) !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    z-index: 9000 !important;
  }

  .pane.gen-pane.is-zen .pane-inner.gen-pane-inner {
    width: 100% !important;
    min-width: auto !important;
    max-width: 1000px !important;
    margin: 0 auto !important;
    padding-top: 5rem !important;
  }

  .pane.gen-pane.pane-shared-surface.is-zen {
    width: 100vw !important;
    min-width: 100vw !important;
    max-width: 100vw !important;
    height: 100dvh !important;
    min-height: 100dvh !important;
    border-radius: 0 !important;
    border: none !important;
    border-bottom: none !important;
    background: var(--bg-base) !important;
  }

  .pane.gen-pane.pane-shared-surface.is-zen .pane-inner.gen-pane-inner {
    width: 100% !important;
    min-width: 100% !important;
    max-width: none !important;
    min-height: 100dvh !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .pane.gen-pane.pane-type-calendar.is-zen {
    width: 100vw !important;
    min-width: 100vw !important;
    max-width: 100vw !important;
    height: 100dvh !important;
    min-height: 100dvh !important;
    border: none !important;
    border-radius: 0 !important;
    border-bottom: none !important;
    background: var(--bg-base) !important;
    box-shadow: none !important;
  }

  .pane.gen-pane.pane-type-calendar.is-zen .pane-inner.gen-pane-inner {
    width: 100% !important;
    min-width: 100% !important;
    max-width: 100% !important;
    min-height: 100dvh !important;
    margin: 0 !important;
  }

  body.panel-fullscreen-mode .pane-region {
    margin-left: 0;
  }

  body.panel-fullscreen-mode .panes-viewport {
    padding: 0;
    gap: 0;
    overflow: hidden;
  }

  body.panel-fullscreen-mode .pinned-viewport {
    display: none;
  }

  body.pane-trail-hidden:not(.panel-fullscreen-mode) .pane-region {
    flex: 0 0 0;
    width: 0;
    min-width: 0;
    margin-left: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
  }

  body.pane-trail-hidden:not(.panel-fullscreen-mode) .panes-viewport {
    gap: 0;
    padding-bottom: 0;
    overflow: hidden;
  }
}

@media (max-width: 920px) {
  .cascade-stage {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    overflow: hidden;
  }

  .pinned-viewport {
    display: none;
  }

  .pane-region {
    position: relative;
    flex: 1;
    min-width: 0;
    margin-left: 0;
    display: flex;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .panes-viewport {
    flex: 1;
    display: flex;
    width: 100%;
    height: 100%;
    padding: 0.45rem 0.45rem 0.35rem;
    overflow-x: auto;
    overflow-y: hidden;
    align-items: flex-start;
    gap: 0.4rem;
    scrollbar-width: none;
    scroll-snap-type: x mandatory;
    scroll-snap-stop: always;
    -webkit-overflow-scrolling: touch;
  }

  .panes-viewport::-webkit-scrollbar {
    display: none;
  }

  .pane.gen-pane,
  .pane.gen-pane.pane-shared-surface,
  .pane.gen-pane.pane-mail-thread,
  .pane.gen-pane.pane-mail-inbox,
  .pane.gen-pane.pane-type-calendar,
  .pane.gen-pane.pane-type-task,
  .pane.gen-pane.pane-type-task-list {
    width: calc(100vw - 0.75rem) !important;
    min-width: calc(100vw - 0.75rem) !important;
    max-width: calc(100vw - 0.75rem) !important;
    height: auto !important;
    min-height: 68dvh !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    opacity: 1 !important;
    filter: none !important;
    transform: none !important;
    border-radius: 18px !important;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.08) !important;
  }

  .pane.gen-pane .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-shared-surface .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-mail-thread .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-mail-inbox .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-type-calendar .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-type-task .pane-inner.gen-pane-inner,
  .pane.gen-pane.pane-type-task-list .pane-inner.gen-pane-inner {
    width: 100% !important;
    min-width: 0 !important;
    max-width: none !important;
    padding: 1rem !important;
    height: auto !important;
    min-height: 68dvh !important;
  }

  body.pane-trail-hidden:not(.panel-fullscreen-mode) .pane-region {
    flex: 1;
    width: auto;
    min-width: 0;
    margin-left: 0;
    overflow: hidden;
    opacity: 1;
    pointer-events: auto;
  }

  body.pane-trail-hidden:not(.panel-fullscreen-mode) .panes-viewport {
    gap: 0.4rem;
    padding-bottom: 0.35rem;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .pane.gen-pane.is-compare-active {
    width: 100vw !important;
    min-width: 100vw !important;
    height: 50vh !important;
  }

  .pane.gen-pane.is-compare-left {
    top: 0 !important;
    left: 0 !important;
    border-right: none !important;
    border-bottom: 1px solid var(--border-strong) !important;
  }

  .pane.gen-pane.is-compare-right {
    top: 50vh !important;
    left: 0 !important;
  }

  .pane.gen-pane.is-compare-active .pane-inner.gen-pane-inner {
    padding-top: 2rem !important;
  }
}