.engine-lab {
  --background: #f0f2f3;
  --foreground: #243039;
  --primary: #d71c3d;
  --primary-foreground: #fff;
  --muted: #dce1e4;
  --muted-foreground: #717e87;
  --accent: #e6e9ec;
  --input: #c1cbd1;
  --ring: #d71c3d;
  --border: #d4dce1;
  min-height: 100svh;
  background: #edf0f2;
  color: #253039;
  font-family: 'Segoe UI', Arial, sans-serif;
}
.engine-lab button {
  font: inherit;
}
.engine-lab button:focus-visible,
.engine-lab a:focus-visible,
.engine-lab [role='button']:focus-visible {
  outline: 2px solid #d71c3d;
  outline-offset: 3px;
}
.engine-header {
  height: 67px;
  padding: 0 27px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-bottom: 1px solid #d5dce1;
  background: #f8f9fa;
}
.back-to-transmission {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: #697780;
  text-decoration: none;
}
.engine-brand {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 1.6px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.engine-brand i {
  display: block;
  width: 8px;
  height: 8px;
  background: #d71c3d;
}
.engine-brand span {
  color: #929da5;
  font-size: 11px;
  font-weight: 400;
}
.engine-vehicles {
  display: flex;
  gap: 4px;
}
.engine-vehicles button {
  border: 0;
  background: transparent;
  color: #77848d;
  border-radius: 2px;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.engine-vehicles button.active {
  background: #222d35;
  color: #fff;
}
.engine-vehicles button span {
  font-size: 10px;
  color: #a2abb1;
  margin-left: 8px;
}
.engine-workspace {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 252px;
  gap: 18px;
  padding: 22px 27px 19px;
  min-height: 780px;
  height: calc(100svh - 128px);
  max-height: 1050px;
  background: radial-gradient(
    ellipse at 50% 60%,
    #d3dbe1 0%,
    #e9edef 55%,
    #f2f4f5 100%
  );
}
.engine-left,
.engine-right {
  display: flex;
  flex-direction: column;
  gap: 17px;
  z-index: 2;
  min-width: 0;
  overflow: auto;
  scrollbar-width: thin;
  scrollbar-color: #b8c3cb transparent;
}
.engine-identity {
  padding: 0 3px 2px;
}
.micro-label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 1.3px;
  color: #687983;
  display: block;
  line-height: 1.6;
}
.engine-identity:before {
  content: '';
  display: block;
  width: 34px;
  height: 4px;
  background: #27313a;
  margin-bottom: 13px;
}
.engine-identity h1 {
  font-family: 'Bahnschrift Condensed', 'Arial Narrow', Arial, sans-serif;
  font-size: 29px;
  line-height: 1.05;
  letter-spacing: -0.8px;
  font-weight: 700;
  margin: 8px 0 8px;
}
.engine-identity h1 span {
  font-size: 27px;
  letter-spacing: -1px;
}
.engine-identity > p {
  font-size: 12px;
  color: #788792;
  line-height: 1.5;
  margin: 8px 0;
}
.rpm-value {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 16px;
  margin-bottom: 8px;
}
.rpm-value output {
  font-family: 'Bahnschrift Condensed', 'Arial Narrow', Arial, sans-serif;
  font-size: 57px;
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1;
  color: #d71c3d;
}
.rpm-value > span {
  font-size: 11px;
  color: #7e8d96;
  letter-spacing: 1px;
}
.engine-range-labels {
  display: flex;
  justify-content: space-between;
  font:
    10px Consolas,
    monospace;
  color: #87959e;
  margin-top: 10px;
}
.engine-identity p.slowed-caption {
  font-size: 11px;
  margin: 7px 0 0;
  color: #8c9aa3;
}
.engine-card {
  background: #fff;
  border: 1px solid #dbe0e3;
  border-radius: 2px;
  padding: 14px 14px 12px;
  box-shadow: 0 1px 2px #293d4804;
}
.card-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.8px;
  color: #303b43;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 9px;
  line-height: 1.5;
}
.card-title > span {
  font-size: 10px;
  color: #8c98a0;
  font-weight: 500;
  letter-spacing: 0.4px;
  white-space: nowrap;
}
.engine-card svg {
  display: block;
  width: 100%;
  height: auto;
}
.linkage-card svg {
  max-height: 147px;
}
.layout-card svg {
  max-height: 117px;
}
.chart-foot {
  border-top: 1px solid #e5e9ec;
  padding-top: 8px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 10px;
  color: #8d989f;
  line-height: 1.4;
}
.chart-foot b {
  font-size: 11px;
  font-weight: 600;
  color: #52626d;
}
.layout-cylinder {
  cursor: pointer;
}
.playback-card {
  margin-top: auto;
  padding: 10px 11px 15px;
}
.engine-play-row {
  display: flex;
  gap: 5px;
  margin-bottom: 15px;
}
.engine-play-row button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 1px solid #dce2e6;
  background: #f7f9fa;
  color: #53636f;
  padding: 8px 10px;
  font-size: 11px;
  border-radius: 2px;
  flex: 1;
  min-height: 35px;
}
.engine-play-row button svg {
  width: 14px;
  height: 14px;
}
.engine-play-row button.engine-play {
  background: #d71c3d;
  border-color: #d71c3d;
  color: #fff;
  flex: 1.5;
}
.engine-play-row button:last-child {
  flex: 0;
}
.slider-label {
  display: flex;
  justify-content: space-between;
  gap: 9px;
  font-size: 10px;
  letter-spacing: 0.5px;
  font-weight: 600;
  color: #51616c;
  margin-top: 17px;
  margin-bottom: 13px;
}
.slider-label span {
  font:
    10px Consolas,
    monospace;
  color: #929fa7;
}
.engine-model {
  position: relative;
  min-width: 0;
  min-height: 620px;
}
.engine-canvas {
  position: absolute;
  inset: 0 -10px 0 -10px;
}
.engine-canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}
.engine-stroke-legend {
  position: absolute;
  left: 0;
  right: 0;
  top: 2px;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 17px;
  flex-wrap: wrap;
  font-size: 10px;
  color: #7a8993;
  letter-spacing: 0.6px;
  pointer-events: none;
}
.engine-stroke-legend > span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.engine-stroke-legend i {
  width: 11px;
  height: 3px;
  display: block;
}
.engine-camera {
  position: absolute;
  right: 3px;
  bottom: 156px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.engine-camera button {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  background: #ffffffb8;
  border: 1px solid #cbd4db;
  color: #596d7a;
  border-radius: 50%;
}
.engine-camera button:hover {
  background: white;
  color: #d71c3d;
}
.model-caption {
  position: absolute;
  bottom: 156px;
  left: 15px;
  max-width: calc(100% - 60px);
  pointer-events: none;
  line-height: 1.6;
}
.model-caption > span {
  display: block;
  font:
    10px Consolas,
    monospace;
  color: #657984;
  letter-spacing: 0.6px;
}
.model-caption small {
  font-size: 10px;
  color: #8798a2;
}
.firing-strip {
  position: absolute;
  bottom: 20px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.firing-strip .micro-label {
  font-size: 10px;
  color: #85969f;
  letter-spacing: 1.2px;
}
.firing-strip > div {
  display: flex;
  gap: 13px;
}
.firing-strip button {
  width: 29px;
  height: 29px;
  border: 1px solid #b6c4cd;
  background: #f2f5f7;
  color: #8495a0;
  border-radius: 50%;
  font:
    12px Consolas,
    monospace;
}
.firing-strip button.firing {
  background: #ebc6ce;
  border-color: #d891a1;
  color: #ce1739;
}
.firing-strip button.selected {
  outline: 1px dashed #d71c3d;
  outline-offset: 4px;
  color: #d71c3d;
}
.firing-strip p {
  display: flex;
  gap: 5px;
  align-items: center;
  font-size: 11px;
  color: #91a1ab;
  margin: 6px 0 0;
}
.engine-loading,
.engine-error {
  position: absolute;
  left: 50%;
  top: 45%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  color: #738590;
  max-width: 80%;
  text-align: center;
  line-height: 1.7;
}
.engine-error {
  width: 80%;
  padding: 20px;
  background: #fff;
  border: 1px solid #d9b3bb;
  color: #955267;
}
.phase-card h2 {
  font-family: 'Bahnschrift Condensed', 'Arial Narrow', Arial, sans-serif;
  font-size: 29px;
  font-weight: 650;
  line-height: 1.1;
  letter-spacing: -0.7px;
  margin: 8px 0 12px;
}
.stroke-bars {
  display: flex;
  gap: 4px;
}
.stroke-bars i {
  height: 3px;
  flex: 1;
  display: block;
}
.phase-card > p {
  font-size: 14px;
  line-height: 1.6;
  color: #7c8a94;
  margin: 13px 0 11px;
}
.valve-status {
  display: flex;
  flex-direction: column;
  gap: 7px;
  font:
    10px Consolas,
    monospace;
  color: #82919c;
}
.valve-status > span {
  display: flex;
  gap: 6px;
  align-items: center;
}
.valve-status i {
  width: 5px;
  height: 5px;
  display: block;
  border-radius: 50%;
}
.relative-pressure {
  border-top: 1px solid #d5dde2;
  margin-top: 15px;
  padding-top: 11px;
  display: flex;
  align-items: center;
  gap: 11px;
}
.relative-pressure strong {
  font-family: 'Bahnschrift Condensed', 'Arial Narrow', Arial, sans-serif;
  font-size: 38px;
  letter-spacing: -1.5px;
  line-height: 1;
  font-weight: 700;
  color: #d71c3d;
}
.relative-pressure strong small {
  font-size: 15px;
  letter-spacing: 0;
  margin-left: 3px;
}
.relative-pressure > span {
  font-size: 10px;
  letter-spacing: 0.6px;
  color: #8a97a0;
  line-height: 1.8;
}
.relative-pressure em {
  font-size: 10px;
  letter-spacing: 0;
  font-style: normal;
  color: #a0abb2;
}
.engine-view-card {
  margin-top: auto;
}
.engine-view-tabs {
  display: grid !important;
  grid-template-columns: repeat(2, minmax(0, 1fr)) !important;
  width: 100% !important;
  height: auto !important;
  gap: 3px;
  background: #f0f3f5 !important;
  border-radius: 2px !important;
}
.engine-view-tabs [data-slot='tabs-trigger'] {
  font-size: 12px !important;
  border-radius: 2px !important;
  padding: 7px 4px !important;
  color: #687b87 !important;
  min-height: 30px;
}
.engine-view-tabs [data-slot='tabs-trigger'][data-active] {
  background: #253139 !important;
  color: #fff !important;
  box-shadow: none !important;
  border-color: #253139 !important;
}
.engine-toggles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 13px 12px;
  margin-top: 16px;
}
.engine-toggles label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  gap: 7px;
  color: #627580;
}
.engine-toggles [data-slot='switch'] {
  height: 14px !important;
  width: 24px !important;
}
.engine-toggles [data-slot='switch-thumb'] {
  width: 12px !important;
  height: 12px !important;
  background: #fff !important;
}
.engine-timeline {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 16px 27px;
  background: #f7f9fa;
  border-top: 1px solid #d4dde3;
  min-height: 62px;
}
.engine-timeline > span {
  font-size: 10px;
  letter-spacing: 0.7px;
  color: #7e909b;
  white-space: nowrap;
}
.engine-timeline > span > b {
  color: #bf1a38;
  font:
    14px Consolas,
    monospace;
  margin-left: 10px;
}
.engine-timeline > [data-slot='slider'] {
  max-width: 540px;
  flex: 1;
}
.engine-timeline > button {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  border: 0;
  background: none;
  color: #647d8b;
  font-size: 12px;
  white-space: nowrap;
}
.engine-notes {
  position: relative;
  background: #fff;
  border-top: 1px solid #d5dfe5;
  padding: 30px max(30px, calc((100% - 1100px) /2));
  color: #586b77;
}
.engine-notes h2 {
  font-size: 24px;
  color: #293b45;
  font-weight: 550;
}
.engine-notes p {
  font-size: 16px;
  line-height: 1.8;
  max-width: 1050px;
}
.engine-notes dl {
  display: flex;
  gap: 35px;
  flex-wrap: wrap;
  border-top: 1px solid #e0e7eb;
  border-bottom: 1px solid #e0e7eb;
  padding: 20px 0;
}
.engine-notes dt {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: #8296a2;
}
.engine-notes dd {
  font-size: 16px;
  margin: 9px 0 0;
  color: #273f4d;
}
.engine-notes a {
  display: block;
  color: #a32c44;
  font-size: 14px;
  line-height: 1.8;
  margin: 8px 0;
  text-underline-offset: 3px;
}
.close-notes {
  position: absolute;
  right: 25px;
  top: 25px;
  border: 0;
  background: #f0f4f6;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  color: #647b89;
  border-radius: 50%;
}
@media (min-width: 1600px) {
  .engine-workspace {
    grid-template-columns: 265px minmax(0, 1fr) 285px;
    padding: 28px 36px;
    gap: 25px;
  }
  .engine-card {
    padding: 17px;
  }
  .engine-identity h1 {
    font-size: 35px;
  }
  .engine-identity h1 span {
    font-size: 33px;
  }
  .rpm-value output {
    font-size: 67px;
  }
  .engine-stroke-legend {
    font-size: 12px;
  }
  .card-title {
    font-size: 12px;
  }
  .card-title > span {
    font-size: 11px;
  }
  .phase-card > p {
    font-size: 16px;
  }
  .linkage-card svg {
    max-height: 178px;
  }
  .layout-card svg {
    max-height: 137px;
  }
  .engine-toggles label {
    font-size: 14px;
  }
  .micro-label {
    font-size: 12px;
  }
  .chart-foot {
    font-size: 12px;
  }
  .chart-foot b {
    font-size: 12px;
  }
}
@media (max-width: 1150px) {
  .engine-brand span {
    display: none;
  }
  .engine-workspace {
    grid-template-columns: 204px minmax(0, 1fr) 220px;
    gap: 10px;
    padding: 20px 18px;
    min-height: 830px;
    height: auto;
  }
  .engine-card {
    padding: 12px 11px;
  }
  .card-title {
    font-size: 10px;
  }
  .engine-identity h1 {
    font-size: 28px;
  }
  .engine-toggles {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .engine-timeline > span:nth-of-type(2) {
    display: none;
  }
  .engine-vehicles button {
    padding: 9px;
  }
  .engine-stroke-legend {
    gap: 10px;
  }
  .engine-camera {
    bottom: 172px;
  }
  .model-caption {
    bottom: 172px;
    left: 6px;
  }
  .engine-header {
    padding: 0 20px;
  }
}
@media (max-width: 920px) {
  .engine-header {
    height: auto;
    min-height: 73px;
    flex-wrap: wrap;
    padding: 15px 20px;
    gap: 15px;
  }
  .engine-brand {
    margin-left: auto;
  }
  .engine-vehicles {
    flex: 1;
    justify-content: flex-end;
  }
  .engine-workspace {
    grid-template-columns: 200px minmax(0, 1fr);
    grid-template-rows: 730px auto;
    min-height: 0;
  }
  .engine-model {
    grid-column: 2;
    grid-row: 1;
  }
  .engine-left {
    grid-column: 1;
    grid-row: 1;
  }
  .engine-right {
    grid-column: 1/-1;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
    gap: 13px;
  }
  .engine-right .engine-card {
    margin: 0;
  }
  .phase-card {
    grid-row: span 2;
  }
  .engine-view-card {
    grid-column: 1/-1;
  }
  .engine-view-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr)) !important;
  }
  .engine-toggles {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
  }
  .engine-timeline {
    gap: 17px;
    padding: 18px;
  }
  .engine-vehicles button {
    font-size: 12px;
  }
  .engine-identity h1 span {
    font-size: 25px;
  }
  .engine-stroke-legend {
    top: 5px;
    font-size: 10px;
  }
}
@media (max-width: 620px) {
  .engine-header {
    padding: 14px 16px;
    gap: 14px;
  }
  .back-to-transmission {
    font-size: 12px;
  }
  .engine-brand {
    font-size: 11px;
  }
  .engine-vehicles {
    flex-basis: 100%;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
    gap: 5px;
  }
  .engine-vehicles button {
    font-size: 12px;
    padding: 10px 4px;
  }
  .engine-vehicles button span {
    margin-left: 5px;
    font-size: 10px;
  }
  .engine-workspace {
    display: flex;
    flex-direction: column;
    padding: 18px 14px;
    gap: 17px;
  }
  .engine-model {
    order: 1;
    height: 570px;
    min-height: 570px;
  }
  .engine-left {
    order: 0;
    overflow: visible;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }
  .engine-identity {
    grid-column: 1/-1;
    position: relative;
    padding-right: 145px;
    min-height: 189px;
  }
  .engine-identity h1 {
    font-size: 28px;
  }
  .engine-identity h1 span {
    font-size: 26px;
  }
  .engine-identity .micro-label {
    font-size: 10px;
  }
  .engine-identity .rpm-value {
    position: absolute;
    right: 0;
    top: 31px;
  }
  .rpm-value output {
    font-size: 53px;
  }
  .engine-identity > [data-slot='slider'] {
    position: absolute;
    right: 0;
    top: 108px;
    width: 128px;
  }
  .engine-range-labels {
    position: absolute;
    right: 0;
    top: 116px;
    width: 128px;
  }
  .engine-identity p.slowed-caption {
    position: absolute;
    right: 0;
    top: 141px;
    font-size: 10px;
  }
  .engine-identity > p {
    font-size: 12px;
    max-width: 220px;
  }
  .linkage-card svg {
    max-height: 123px;
  }
  .layout-card svg {
    max-height: 110px;
  }
  .playback-card {
    grid-column: 1/-1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7px 18px;
    padding: 12px 12px 18px;
  }
  .engine-play-row {
    grid-row: 1/4;
    align-self: center;
    margin: 0;
  }
  .playback-card .slider-label {
    grid-column: 2;
    margin: 7px 0 5px;
  }
  .playback-card > [data-slot='slider'] {
    grid-column: 2;
  }
  .engine-right {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    order: 2;
    gap: 12px;
  }
  .phase-card {
    grid-column: 1/-1;
    grid-row: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 20px;
  }
  .phase-card .card-title {
    grid-column: 1/-1;
  }
  .phase-card h2 {
    font-size: 29px;
    margin: 0 0 5px;
  }
  .phase-card .stroke-bars {
    grid-column: 1;
    grid-row: 3;
  }
  .phase-card > p {
    grid-column: 1/-1;
    font-size: 14px;
    margin: 8px 0;
  }
  .phase-card .valve-status {
    grid-column: 1;
    grid-row: 5;
  }
  .phase-card .relative-pressure {
    grid-column: 2;
    grid-row: 2/4;
    margin: 0;
    padding: 0;
    border: 0;
  }
  .relative-pressure strong {
    font-size: 35px;
  }
  .relative-pressure > span {
    font-size: 9px;
  }
  .engine-view-card {
    grid-column: 1/-1;
  }
  .engine-view-tabs [data-slot='tabs-trigger'] {
    font-size: 12px !important;
  }
  .engine-toggles {
    grid-template-columns: 1fr 1fr;
    gap: 13px 22px;
  }
  .engine-camera {
    bottom: 144px;
  }
  .model-caption {
    left: 0;
    bottom: 141px;
    max-width: 80%;
  }
  .firing-strip {
    bottom: 20px;
  }
  .firing-strip > div {
    gap: 17px;
  }
  .engine-timeline {
    display: grid;
    grid-template-columns: 138px 1fr;
    padding: 17px;
    gap: 18px 10px;
  }
  .engine-timeline > button {
    grid-column: 1/-1;
    margin: 0;
    justify-content: center;
  }
  .engine-timeline > [data-slot='slider'] {
    max-width: none;
  }
  .engine-notes {
    padding: 25px 20px;
  }
  .engine-notes dl {
    gap: 18px;
  }
  .engine-notes p {
    font-size: 15px;
  }
  .card-title {
    font-size: 10px;
    letter-spacing: 0.4px;
  }
  .card-title > span {
    font-size: 9px;
  }
  .chart-foot {
    font-size: 10px;
  }
  .chart-foot b {
    font-size: 10px;
  }
  .engine-card svg text {
    font-family: Arial, sans-serif;
  }
}
/* Keep regular reading and controls readable while retaining the reference's compact panels. */
.engine-vehicles button,
.back-to-transmission,
.engine-toggles label,
.engine-view-tabs [data-slot='tabs-trigger'],
.engine-timeline > button {
  font-size: 14px;
}
.phase-card > p {
  font-size: 16px;
}
.card-title,
.card-title > span,
.micro-label,
.engine-stroke-legend,
.chart-foot,
.chart-foot b,
.engine-range-labels,
.engine-identity p.slowed-caption,
.slider-label,
.slider-label span,
.firing-strip .micro-label,
.firing-strip p,
.model-caption > span,
.model-caption small,
.engine-timeline > span,
.valve-status,
.relative-pressure > span,
.relative-pressure em {
  font-size: 12px;
}
.engine-identity > p {
  font-size: 14px;
}
.engine-view-tabs [data-slot='tabs-trigger'] {
  font-size: 14px !important;
}
.engine-toggles {
  grid-template-columns: 1fr;
}
.engine-toggles [data-slot='switch'] {
  flex-shrink: 0;
}
.engine-play-row button {
  font-size: 12px;
}
.card-title {
  letter-spacing: 0.3px;
  flex-wrap: wrap;
}
.model-caption {
  bottom: 175px;
}
.firing-strip .micro-label {
  text-align: center;
}
.engine-stroke-legend {
  gap: 11px;
  line-height: 1.5;
}
.engine-workspace {
  min-height: 905px;
  height: calc(100svh - 128px);
}
.engine-left,
.engine-right {
  gap: 14px;
}
.relative-pressure {
  align-items: flex-start;
}
.phase-card > p {
  line-height: 1.55;
}
.firing-strip {
  bottom: 20px;
}
@media (max-width: 1150px) {
  .engine-workspace {
    height: auto;
    min-height: 1020px;
  }
  .engine-stroke-legend {
    font-size: 12px;
  }
  .model-caption {
    bottom: 198px;
  }
  .engine-camera {
    bottom: 204px;
  }
}
@media (max-width: 920px) {
  .engine-workspace {
    grid-template-rows: 920px auto;
    min-height: 0;
  }
  .engine-toggles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .engine-view-card {
    margin-top: 0;
  }
  .engine-brand {
    display: none;
  }
}
@media (max-width: 620px) {
  .engine-workspace {
    min-height: 0;
  }
  .engine-model {
    height: 610px;
    min-height: 610px;
  }
  .engine-toggles {
    grid-template-columns: 1fr 1fr;
  }
  .card-title,
  .card-title > span {
    font-size: 12px;
  }
  .engine-vehicles button {
    font-size: 13px;
  }
  .engine-header {
    justify-content: space-between;
  }
  .engine-identity {
    padding-right: 139px;
    min-height: 218px;
  }
  .engine-identity > p {
    font-size: 14px;
  }
  .engine-identity .micro-label {
    font-size: 12px;
  }
  .engine-identity p.slowed-caption {
    font-size: 12px;
    max-width: 130px;
  }
  .phase-card {
    display: block;
  }
  .phase-card .relative-pressure {
    margin-top: 15px;
    padding-top: 10px;
    border-top: 1px solid #dce4e9;
  }
  .phase-card .valve-status {
    margin: 12px 0;
  }
  .phase-card .card-title {
    margin-bottom: 12px;
  }
  .phase-card > p {
    font-size: 16px;
  }
  .card-title {
    gap: 4px;
  }
  .card-title > span {
    font-size: 11px;
  }
  .firing-strip .micro-label {
    font-size: 12px;
  }
  .model-caption {
    bottom: 175px;
  }
  .engine-camera {
    bottom: 209px;
  }
  .engine-timeline > span {
    font-size: 12px;
    white-space: normal;
  }
  .engine-play-row button {
    padding: 9px 7px;
    font-size: 12px;
  }
  .engine-play-row button span {
    display: none;
  }
  .chart-foot {
    font-size: 12px;
    flex-wrap: wrap;
  }
  .chart-foot b {
    font-size: 12px;
  }
  .relative-pressure > span,
  .relative-pressure em {
    font-size: 12px;
  }
  .engine-identity h1 span {
    font-size: 24px;
  }
  .engine-identity h1 {
    font-size: 27px;
  }
  .engine-card {
    padding: 12px 10px;
  }
  .linkage-card svg {
    max-height: 140px;
  }
  .layout-card svg {
    max-height: 126px;
  }
  .engine-toggles label {
    font-size: 14px;
  }
}

/* ==========================================================================
   NATIVE CONTROL PORT
   The study project used Radix sliders, switches and tabs. This build uses
   native range inputs, checkboxes and buttons, restyled to the same look so
   the page stays dependency-free.
   ========================================================================== */

.eng-slider {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 16px; background: none; cursor: pointer; display: block;
}
.eng-slider:focus-visible { outline: 2px solid #d71c3d; outline-offset: 3px; }
.eng-slider::-webkit-slider-runnable-track {
  height: 4px; border-radius: 999px;
  background: linear-gradient(#c1cbd1, #c1cbd1) 0 / var(--fill, 0%) 100% no-repeat, #dce1e4;
}
.eng-slider::-moz-range-track { height: 4px; border-radius: 999px; background: #dce1e4; }
.eng-slider::-moz-range-progress { height: 4px; border-radius: 999px; background: #253139; }
.eng-slider::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; margin-top: -5px;
  width: 14px; height: 14px; border-radius: 50%;
  background: #fff; border: 2px solid #d71c3d; box-shadow: 0 1px 3px rgba(20,32,40,.28);
}
.eng-slider::-moz-range-thumb {
  width: 14px; height: 14px; border-radius: 50%; box-sizing: border-box;
  background: #fff; border: 2px solid #d71c3d; box-shadow: 0 1px 3px rgba(20,32,40,.28);
}
.eng-slider::-webkit-slider-runnable-track {
  background: linear-gradient(#253139, #253139) 0 / var(--fill, 0%) 100% no-repeat, #dce1e4;
}

.engine-view-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 3px; background: #f0f3f5; border-radius: 2px; padding: 3px; }
.engine-view-tabs button {
  font-size: 12px; border: 0; border-radius: 2px; padding: 7px 4px; min-height: 30px;
  background: none; color: #687b87; cursor: pointer; transition: background .18s, color .18s;
}
.engine-view-tabs button:hover { color: #33454f; }
.engine-view-tabs button[aria-selected='true'] { background: #253139; color: #fff; }

.eng-switch { position: relative; width: 24px; height: 14px; flex: 0 0 auto; }
.eng-switch input { position: absolute; inset: 0; opacity: 0; margin: 0; width: 100%; height: 100%; cursor: pointer; }
.eng-switch i {
  display: block; width: 100%; height: 100%; border-radius: 999px;
  background: #c8d0d5; transition: background .18s; pointer-events: none;
}
.eng-switch i::after {
  content: ''; position: absolute; top: 1px; left: 1px; width: 12px; height: 12px;
  border-radius: 50%; background: #fff; box-shadow: 0 1px 2px rgba(20,32,40,.3);
  transition: transform .18s;
}
.eng-switch input:checked + i { background: #d71c3d; }
.eng-switch input:checked + i::after { transform: translateX(10px); }
.eng-switch input:focus-visible + i { outline: 2px solid #d71c3d; outline-offset: 3px; }

.engine-timeline > .eng-slider { max-width: 540px; flex: 1; }
.engine-lab [hidden] { display: none !important; }

/* Language toggle sits in the engine header alongside the vehicle nav. */
.engine-lang {
  background: none; border: 1px solid #ccd5da; border-radius: 6px; padding: 6px 9px;
  cursor: pointer; font: 10px Consolas, monospace; letter-spacing: .1em; color: #7a8a94;
}
.engine-lang .active { color: #d71c3d; }
.engine-lang .lang-sep { opacity: .45; margin: 0 3px; }