/* R89: Smartphone entry uses the existing discovery state. Desktop remains intact. */
@media (max-width:767px), (max-width:960px) and (max-height:500px) and (pointer:coarse) {
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode][data-mode="model"][data-discovery="choice"] #stage-tools,
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode][data-mode="model"][data-discovery="choice"] .stage-toolbar [data-action="expand"] {display:none}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode][data-mode="model"][data-discovery="choice"] #explanation-actions {display:grid;grid-template-columns:minmax(0,1fr);gap:9px}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode][data-mode="model"][data-discovery="choice"] #explanation-actions button {min-height:46px;white-space:normal;line-height:1.35}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .discovery-modes {gap:7px}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .discovery-modes button {min-height:44px;white-space:normal;line-height:1.35}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .discovery-utilities {gap:7px;flex-wrap:wrap}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .discovery-utilities button {min-height:44px}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .stage-toolbar [data-action="expand"] {min-height:44px;font-size:12px}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] #explanation,
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] #lab {scroll-margin-top:16px}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .app-footer {padding-bottom:calc(16px + env(safe-area-inset-bottom));flex-wrap:wrap}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .app-footer button,
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .app-footer a {min-height:44px;display:inline-flex;align-items:center}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .dialog-content,
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .wb-panel {padding-bottom:calc(22px + env(safe-area-inset-bottom))}
  body#diesel-learning.diesel-app[data-app-status="ready"][data-mode] .notice {bottom:calc(12px + env(safe-area-inset-bottom))}
}