:root {
  color-scheme:light;
  --paper:#f4f5ef;
  --ink:#193c36;
  --muted:#5d7069;
  --line:#d6dfd5;
  --ice:#97610a;
  --mg2:#b34429;
  --mg1:#007e80;
  font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--ink);
  background:var(--paper);
}
* {
  box-sizing:border-box;
}
html {
  scroll-behavior:smooth;
  scroll-padding-top:24px;
}
body {
  margin:0;
}
a {
  color:inherit;
  text-underline-offset:4px;
}
a:hover {
  color:#00777a;
}
button,input {
  font:inherit;
}
button {
  padding:11px 18px;
  border:1px solid #bacac0;
  border-radius:6px;
  background:transparent;
  color:var(--ink);
  cursor:pointer;
}
button:hover {
  background:#e7ede5;
}
button:disabled {
  opacity:.5;
  cursor:wait;
}
:focus-visible {
  outline:3px solid #007e80;
  outline-offset:4px;
}
button,input {
  touch-action:manipulation;
}
.skip-link {
  position:absolute;
  left:20px;
  top:-80px;
  background:white;
  padding:15px;
  z-index:5;
}
.skip-link:focus {
  top:16px;
}
.site-header,main {
  max-width:1280px;
  margin:auto;
  padding-inline:48px;
}
.site-header {
  min-height:92px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  border-bottom:1px solid var(--line);
  gap:20px;
}
.brand {
  font-size:15px;
  letter-spacing:.12em;
  font-weight:800;
  text-decoration:none;
}
.brand span {
  display:block;
  font-size:9px;
  letter-spacing:.16em;
  font-weight:500;
  margin-top:5px;
}
.site-header nav {
  display:flex;
  gap:28px;
  font-size:13px;
}
.site-header nav a {
  text-decoration:none;
}
.intro {
  display:grid;
  grid-template-columns:1fr 270px;
  gap:70px;
  padding:64px 0 48px;
  align-items:end;
}
.eyebrow {
  font-size:10px;
  letter-spacing:.16em;
  font-weight:750;
  margin:0 0 17px;
}
h1 {
  font-size:clamp(44px,5.6vw,76px);
  line-height:1.03;
  letter-spacing:-.055em;
  font-weight:650;
  margin:0 0 25px;
}
h2 {
  font-size:27px;
  line-height:1.2;
  letter-spacing:-.035em;
  font-weight:650;
  margin:0 0 20px;
}
p {
  line-height:1.65;
}
.lead {
  font-size:17px;
  max-width:660px;
  margin:0;
  color:#4b645c;
}
.intro-note {
  border-left:1px solid #bdccc0;
  padding-left:27px;
  font-size:12px;
}
.tag {
  font-size:10px;
  border:1px solid #b4c5b8;
  border-radius:3px;
  padding:6px 9px;
  letter-spacing:.1em;
}
.intro-note p {
  margin:18px 0 0;
}
.muted {
  color:var(--muted);
}
.lab {
  border:1px solid var(--line);
  border-radius:12px;
  background:#fff;
  overflow:hidden;
  box-shadow:0 10px 36px #203f3210;
}
.lab-heading {
  padding:25px 30px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  border-bottom:1px solid #e6ece5;
}
.lab-heading .eyebrow {
  margin-bottom:7px;
  color:var(--muted);
}
.lab-heading h2 {
  font-size:22px;
  margin:0;
}
.lab-grid {
  display:grid;
  grid-template-columns:minmax(0,1fr) 245px;
}
.canvas-panel {
  min-width:0;
  align-self:center;
  padding:8px 12px;
}
#animation_container {
  width:100%;
  aspect-ratio:4/3;
  position:relative;
}
canvas {
  display:block;
  width:100%;
  height:100%;
  touch-action:none;
}
#load-status {
  font-size:13px;
  text-align:center;
  color:var(--muted);
}
#load-status:empty {
  display:none;
}
.legend {
  border-left:1px solid #e6ece5;
  background:#f9faf6;
  padding:30px 24px;
}
.legend .eyebrow {
  font-size:9px;
  color:var(--muted);
}
.legend-item {
  position:relative;
  padding-left:15px;
  border-left:2px solid currentColor;
  margin:26px 0;
}
.legend-number {
  font-size:10px;
  letter-spacing:.1em;
  opacity:.8;
}
.legend-item h3 {
  font-size:15px;
  margin:5px 0 7px;
}
.legend-item small {
  display:block;
  font-size:10px;
  margin-top:3px;
  letter-spacing:.05em;
}
.legend-item p {
  font-size:12px;
  color:#4b6058;
  margin:0;
}
.ice {
  color:var(--ice);
}
.mg2 {
  color:var(--mg2);
}
.mg1 {
  color:var(--mg1);
}
.scale-note {
  border-top:1px solid var(--line);
  padding-top:18px;
  font-size:11px;
  color:var(--muted);
}
fieldset {
  border:0;
  border-top:1px solid #e6ece5;
  padding:24px 30px 20px;
  margin:0;
  min-width:0;
}
fieldset legend {
  position:absolute;
  width:1px;
  height:1px;
  overflow:hidden;
  clip-path:inset(50%);
}
.control-grid {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:40px;
}
.range-control {
  display:grid;
  grid-template-columns:1fr auto;
  gap:12px;
}
.range-control label {
  font-size:14px;
  font-weight:650;
}
.range-control label span {
  font-size:11px;
  margin-left:8px;
  opacity:.8;
}
output {
  font-variant-numeric:tabular-nums;
}
.range-control output {
  font-size:14px;
  font-weight:650;
}
.range-control input {
  grid-column:1/-1;
  width:100%;
  margin:0;
  accent-color:currentColor;
  height:26px;
  cursor:pointer;
}
.range-control p {
  grid-column:1/-1;
  color:var(--muted);
  font-size:11px;
  margin:0;
}
.readouts {
  display:flex;
  align-items:center;
  gap:48px;
  margin-top:24px;
  border-top:1px solid #e6ece5;
  padding-top:20px;
}
.readouts span {
  font-size:10px;
  display:block;
  color:var(--muted);
  margin-bottom:7px;
}
.readouts output {
  font-size:21px;
  font-weight:600;
}
.readouts button {
  margin-left:auto;
  font-size:12px;
}
.warning {
  padding:12px 16px;
  background:#fff1e9;
  color:#923b23;
  border-radius:5px;
  font-size:12px;
}
.lab-footnote {
  margin:0;
  padding:0 30px 20px;
  color:var(--muted);
  font-size:11px;
}
.explanation {
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:70px;
  padding:76px 0 48px;
  align-items:center;
}
.explanation p {
  font-size:14px;
  color:#4b645c;
}
.formula {
  border-block:1px solid #cdd8cb;
  padding:22px 0;
  margin:26px 0;
}
.formula span,.formula small {
  display:block;
  color:var(--muted);
  font-size:11px;
}
.formula code {
  display:block;
  font-size:clamp(15px,1.6vw,21px);
  margin:12px 0;
  font-weight:650;
  white-space:normal;
}
.mechanism {
  margin:0;
  background:white;
  border:1px solid var(--line);
  border-radius:8px;
  padding:20px;
  overflow:hidden;
}
.mechanism iframe {
  display:block;
  width:100%;
  aspect-ratio:4/3;
  border:0;
}
.mechanism figcaption {
  font-size:11px;
  color:var(--muted);
  line-height:1.6;
  padding:15px 8px 4px;
  border-top:1px solid #e6ece5;
}
.mechanism figcaption span {
  display:block;
  font-size:9px;
  letter-spacing:.1em;
  margin-bottom:7px;
}
.scope-note {
  border-left:3px solid #9db79d;
  background:#e9eee3;
  padding:25px 30px;
  margin-bottom:64px;
}
.scope-note h2 {
  font-size:18px;
  margin-bottom:10px;
}
.scope-note p {
  font-size:13px;
  margin:0;
  color:#4b645c;
}
footer {
  border-top:1px solid var(--line);
  padding:36px 0 48px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:70px;
}
footer h2 {
  font-size:23px;
}
footer p,footer a {
  font-size:12px;
}
footer .eyebrow {
  font-size:9px;
}
@media(min-width:1500px) {
  .site-header,main {
    max-width:1380px;
  }
}
@media(max-width:1000px) {
  .site-header,main {
    padding-inline:28px;
  }
  .intro {
    gap:30px;
    grid-template-columns:1fr 220px;
  }
  .lab-grid {
    grid-template-columns:minmax(0,1fr) 205px;
  }
  .legend {
    padding:24px 16px;
  }
  .legend-item {
    margin:18px 0;
  }
  .explanation {
    gap:35px;
  }
  .readouts {
    gap:25px;
  }
}
@media(max-width:720px) {
  .site-header,main {
    padding-inline:18px;
  }
  .site-header {
    min-height:78px;
  }
  .brand {
    font-size:12px;
  }
  .brand span {
    font-size:8px;
  }
  .site-header nav {
    gap:14px;
    font-size:11px;
  }
  .site-header nav a:first-child {
    display:none;
  }
  .intro {
    display:block;
    padding:38px 0 30px;
  }
  .intro-note {
    border-left:0;
    border-top:1px solid var(--line);
    padding:20px 0 0;
    margin-top:24px;
  }
  .intro-note .muted {
    display:none;
  }
  .intro-note p {
    display:inline-block;
    margin:0 0 0 12px;
    vertical-align:middle;
    font-size:10px;
  }
  .lead {
    font-size:15px;
  }
  h1 {
    font-size:52px;
  }
  .lab-heading {
    padding:20px 16px;
  }
  .lab-heading h2 {
    font-size:18px;
  }
  .lab-heading button {
    font-size:11px;
    padding:9px;
  }
  .lab-grid {
    display:block;
  }
  .canvas-panel {
    padding:8px 0;
  }
  .legend {
    border-left:0;
    border-top:1px solid #e6ece5;
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:12px;
    padding:20px 16px;
  }
  .legend>.eyebrow,.scale-note {
    grid-column:1/-1;
    margin:0;
  }
  .legend-item {
    margin:0;
    padding-left:9px;
  }
  .legend-item h3 {
    font-size:12px;
  }
  .legend-item p {
    font-size:10px;
  }
  .scale-note {
    padding-top:12px;
  }
  fieldset {
    padding:22px 16px 18px;
  }
  .control-grid {
    grid-template-columns:1fr;
    gap:25px;
  }
  .range-control output {
    font-size:13px;
  }
  .readouts {
    flex-wrap:wrap;
    gap:20px;
  }
  .readouts output {
    font-size:19px;
  }
  .readouts button {
    margin:0;
  }
  .lab-footnote {
    padding:0 16px 20px;
  }
  .explanation {
    grid-template-columns:1fr;
    gap:24px;
    padding-top:46px;
  }
  .explanation h2 {
    font-size:26px;
  }
  .mechanism {
    max-width:460px;
    width:100%;
    justify-self:center;
  }
  .scope-note {
    margin-bottom:38px;
    padding:20px;
  }
  footer {
    grid-template-columns:1fr;
    gap:10px;
    padding-top:28px;
  }
}
@media(prefers-reduced-motion:reduce) {
  html {
    scroll-behavior:auto;
  }
}

/* Catalog landing page */
.related-powertrain { max-width:780px; margin:0 0 30px; font-size:14px; line-height:1.7; }
.portal-hero { display:grid; grid-template-columns:minmax(0,1fr) 285px; gap:70px; padding:78px 0 62px; align-items:end; }
.portal-hero h1 { max-width:780px; }
.portal-note { border-left:1px solid #bdccc0; padding-left:27px; font-size:12px; }
.portal-note p { margin:18px 0 0; }
.section-heading { display:flex; justify-content:space-between; align-items:end; gap:20px; margin-bottom:20px; }
.section-heading .eyebrow { margin-bottom:8px; color:var(--muted); }
.catalog-count { color:var(--muted); font-size:12px; }
.topic-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; }
.topic-card { min-height:170px; padding:24px; border:1px solid var(--line); border-radius:10px; background:#fff; color:var(--ink); text-decoration:none; display:flex; gap:18px; position:relative; }
.topic-card:hover { border-color:#9ab3a4; background:#fbfcf8; }
.topic-card h3 { margin:0 0 9px; font-size:18px; }
.topic-card h3 small { display:block; color:var(--muted); font-size:10px; letter-spacing:.09em; margin-top:4px; }
.topic-card p { margin:0; color:#4b645c; font-size:13px; line-height:1.55; }
.topic-index { color:var(--muted); font-size:11px; letter-spacing:.1em; }
.topic-link { display:inline-block; margin-top:18px; font-size:12px; text-decoration:underline; text-underline-offset:4px; }
.topic-card-planned { background:#f9faf6; }
.topic-status { position:absolute; top:24px; right:24px; color:var(--muted); font-size:10px; text-transform:uppercase; letter-spacing:.1em; }
.portal-columns { display:grid; grid-template-columns:1fr 1fr; gap:70px; padding:100px 0 80px; }
.portal-columns h2 { max-width:370px; }
.portal-columns p { max-width:600px; }
.language-switch { padding:6px 9px; border-radius:4px; font-size:11px; }
@media (max-width:700px) { .portal-hero,.portal-columns { grid-template-columns:1fr; gap:30px; padding-top:52px; } .topic-grid { grid-template-columns:1fr; } .section-heading { align-items:start; flex-direction:column; gap:6px; } }

/* Third-party notices page */
.notice-shell { padding-top:64px; }
.notice-shell h1 { max-width:820px; }
.notice-lead { max-width:760px; color:#4b645c; font-size:17px; }
.notice-grid { display:grid; grid-template-columns:minmax(0,1fr) 240px; gap:70px; align-items:start; padding:34px 0 74px; }
.notice-content { max-width:820px; }
.notice-content section { border-top:1px solid var(--line); padding:34px 0 12px; }
.notice-content h2 { font-size:25px; margin-bottom:18px; }
.notice-content p,.notice-content li { color:#405a51; font-size:14px; line-height:1.72; }
.notice-content p { margin:16px 0; }
.notice-content ul { margin:0; padding-left:22px; }
.notice-content li + li { margin-top:12px; }
.notice-content code { font-size:.9em; background:#e9eee7; border-radius:3px; padding:2px 5px; }
.notice-aside { position:sticky; top:24px; border-left:1px solid #bdccc0; padding:4px 0 0 24px; }
.notice-aside nav { display:grid; gap:11px; font-size:13px; }
.notice-aside nav a { text-decoration:none; }
.notice-aside .muted { font-size:12px; margin-top:28px; }
@media (max-width:760px) { .notice-shell { padding-top:42px; } .notice-grid { grid-template-columns:1fr; gap:30px; padding-bottom:46px; } .notice-aside { position:static; border-left:0; border-top:1px solid var(--line); padding:24px 0 0; } .notice-aside nav { grid-template-columns:1fr 1fr; } }