:root {
  color-scheme: light;
  --ink: #173345;
  --muted: #586773;
  --paper: #f6f5f0;
  --panel: #fffefa;
  --line: #d6dcd9;
  --teal: #176c67;
  --orange: #ad542b;
  --focus: #a8461d;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  background: var(--paper);
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input,
select {
  font: inherit;
}
button,
select {
  cursor: pointer;
}
button {
  padding: 8px 13px;
  border: 1px solid #bac6c4;
  background: var(--panel);
  color: var(--ink);
  border-radius: 5px;
  min-height: 40px;
}
button:hover {
  background: #edf2ed;
  border-color: #7b9992;
}
button:disabled {
  opacity: 0.5;
  cursor: default;
}
button[aria-pressed="true"] {
  background: #e1eee8;
  color: #13554f;
  border-color: var(--teal);
}
:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}
button,
input,
select,
a {
  touch-action: manipulation;
}
.skip {
  position: absolute;
  top: -70px;
  left: 12px;
  background: var(--panel);
  padding: 12px;
  z-index: 3;
}
.skip:focus {
  top: 8px;
}
.site-header {
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px max(22px, calc((100vw - 1240px) / 2));
  background: var(--panel);
}
.identity {
  display: flex;
  gap: 11px;
  align-items: center;
}
.identity strong {
  font-size: 19px;
  letter-spacing: -0.5px;
  display: block;
}
.identity span {
  display: block;
  font-size: 12px;
  color: var(--muted);
}
.session-actions {
  display: flex;
  gap: 8px;
}
main {
  max-width: 1284px;
  padding: 0 22px;
  margin: auto;
}
.labs {
  display: flex;
  gap: 4px;
  padding: 17px 0;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
}
.labs button {
  border-color: transparent;
  background: transparent;
  white-space: nowrap;
  font-size: 12px;
  display: flex;
  gap: 10px;
  align-items: center;
}
.labs span {
  font-size: 15px;
}
.experiment-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 0 12px;
}
.eyebrow {
  margin: 0 0 3px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: var(--muted);
}
h1 {
  font-size: 31px;
  line-height: 1.1;
  letter-spacing: -1px;
  margin: 0 0 7px;
  font-weight: 600;
}
h2 {
  font-size: 14px;
  font-weight: 650;
  margin: 0;
}
p {
  margin: 0 0 12px;
}
#lab-subtitle,
.window-label {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.window-label {
  text-align: right;
  max-width: 330px;
  font-variant-numeric: tabular-nums;
}
.notice {
  font-size: 12px;
  color: var(--muted);
  min-height: 29px;
}
.error {
  padding: 10px 13px;
  border-left: 3px solid #a93626;
  background: #fff0e8;
  color: #842f21;
  font-size: 14px;
}
.instrument {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 285px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  overflow: hidden;
}
.visual {
  min-width: 0;
  padding: 16px 18px;
}
form {
  background: #eeefe8;
  border-left: 1px solid var(--line);
  padding: 18px;
}
form h2 {
  margin-bottom: 14px;
}
.field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 92px;
  align-items: center;
  gap: 10px;
  margin: 10px 0;
}
.field label {
  font-size: 13px;
}
.unit {
  display: block;
  font-size: 11px;
  color: var(--muted);
}
input[type="number"] {
  min-width: 0;
  width: 100%;
  padding: 8px;
  border: 1px solid #a5b6b0;
  background: var(--panel);
  color: var(--ink);
  border-radius: 4px;
  font-variant-numeric: tabular-nums;
}
input[aria-invalid="true"] {
  border-color: #a93626;
  background: #fff0e8;
}
.apply,
#play {
  background: var(--ink);
  color: white;
  border-color: var(--ink);
}
.apply:hover,
#play:hover {
  background: #285263;
}
.apply {
  width: 100%;
  margin: 12px 0;
}
.small-note {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.5;
  margin: 0;
}
.panel-caption {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  font-size: 11px;
  color: var(--muted);
  min-height: 24px;
}
.panel-caption h2 {
  color: var(--ink);
}
svg {
  display: block;
  width: 100%;
  height: 300px;
  overflow: visible;
}
#plot {
  height: 270px;
}
svg text {
  font-family: inherit;
  font-variant-numeric: tabular-nums;
  fill: var(--muted);
  font-size: 11px;
}
.grid-line {
  stroke: #dde3de;
  stroke-width: 1;
}
.axis {
  stroke: #9bacaa;
  stroke-width: 1;
}
.trace {
  fill: none;
  stroke: var(--teal);
  stroke-width: 2.4;
  stroke-linejoin: round;
}
.trace.secondary {
  stroke: var(--orange);
  stroke-dasharray: 7 4;
}
.trace.comparison {
  stroke: #6e6192;
  stroke-dasharray: 2 4;
  stroke-width: 2;
}
.body-one {
  fill: #e0eee8;
  stroke: var(--teal);
  stroke-width: 2;
}
.body-two {
  fill: #f4e6d9;
  stroke: var(--orange);
  stroke-width: 2;
}
.vector {
  stroke: var(--ink);
  stroke-width: 1.6;
  fill: none;
}
.cursor {
  stroke: #687b85;
  stroke-dasharray: 4 4;
  stroke-width: 1;
}
.transport {
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 15px 0 8px;
  flex-wrap: wrap;
}
.transport #play {
  min-width: 74px;
}
.speed-label {
  margin-left: auto;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
}
select {
  padding: 7px;
  border: 1px solid #bac6c4;
  border-radius: 4px;
  color: var(--ink);
  background: var(--panel);
}
output {
  min-width: 80px;
  text-align: right;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}
.scrub-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--muted);
}
input[type="range"] {
  width: 100%;
  accent-color: var(--teal);
  min-height: 28px;
  margin: 0;
}
.current-summary {
  font-size: 12px;
  margin: 8px 0 0;
  color: var(--ink);
  min-height: 36px;
}
.measurements {
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
dl {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
  margin: 0;
}
dt {
  font-size: 11px;
  color: var(--muted);
  margin-bottom: 3px;
}
dd {
  font-size: 18px;
  font-variant-numeric: tabular-nums;
  margin: 0;
  overflow-wrap: anywhere;
}
.plot-panel {
  padding: 22px 0 16px;
}
.plot-legend {
  display: flex;
  gap: 15px;
  flex-wrap: wrap;
  font-size: 11px;
}
.legend:before {
  content: "";
  display: inline-block;
  width: 18px;
  border-top: 2px solid var(--teal);
  margin-right: 5px;
  vertical-align: middle;
}
.legend.secondary:before {
  border-color: var(--orange);
  border-top-style: dashed;
}
.legend.comparison:before {
  border-color: #6e6192;
  border-top-style: dotted;
}
.data-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 8px 0;
}
.data-actions button {
  font-size: 12px;
}
.sample-table {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}
.sample-table summary {
  cursor: pointer;
  font-size: 13px;
}
.table-scroll {
  max-width: 100%;
  overflow: auto;
  margin-top: 12px;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 11px;
  font-variant-numeric: tabular-nums;
}
caption {
  text-align: left;
  margin-bottom: 8px;
  color: var(--muted);
}
th,
td {
  text-align: right;
  padding: 7px 10px;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
th {
  font-weight: 600;
}
.model-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 35px;
  padding: 26px 0;
}
.model-notes h2 {
  margin-bottom: 10px;
}
.model-notes ul {
  padding-left: 18px;
  font-size: 13px;
  color: var(--muted);
}
.equations {
  list-style: none;
  padding-left: 0 !important;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  line-height: 1.9;
  font-size: 12px !important;
  overflow-wrap: anywhere;
}
a {
  color: var(--teal);
}
.model-notes p {
  font-size: 12px;
}
footer {
  border-top: 1px solid var(--line);
  padding: 20px 0 25px;
  color: var(--muted);
  font-size: 11px;
}
[hidden] {
  display: none !important;
}
@media (max-width: 760px) {
  .site-header {
    padding: 14px 16px;
    flex-wrap: wrap;
    gap: 12px;
  }
  .identity strong {
    font-size: 18px;
  }
  .session-actions {
    margin-left: auto;
  }
  .session-actions button {
    font-size: 12px;
    padding: 7px 10px;
  }
  main {
    padding: 0 16px;
  }
  .labs {
    gap: 0;
  }
  .labs button {
    padding: 7px 10px;
    gap: 7px;
  }
  .labs span {
    font-size: 13px;
  }
  .experiment-heading {
    align-items: flex-start;
    padding-top: 20px;
  }
  .window-label {
    max-width: 130px;
    font-size: 11px;
  }
  h1 {
    font-size: 27px;
  }
  .instrument {
    grid-template-columns: minmax(0, 1fr);
  }
  .visual {
    padding: 13px 10px;
  }
  form {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: 16px;
  }
  #parameter-fields {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0 16px;
  }
  .field {
    grid-template-columns: minmax(0, 1fr);
    gap: 3px;
    margin: 6px 0;
  }
  .field label .unit {
    display: inline;
    margin-left: 5px;
  }
  .apply {
    max-width: 240px;
  }
  .transport {
    gap: 6px;
  }
  .transport button {
    padding: 7px 9px;
    font-size: 12px;
  }
  .speed-label {
    font-size: 11px;
  }
  output {
    min-width: 68px;
  }
  .panel-caption {
    align-items: flex-start;
  }
  .panel-caption > span {
    max-width: 120px;
    text-align: right;
  }
  dl {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  dd {
    font-size: 17px;
  }
  .plot-legend {
    gap: 7px;
    font-size: 10px;
  }
  .model-notes {
    grid-template-columns: minmax(0, 1fr);
    gap: 15px;
  }
  .current-summary {
    min-height: 38px;
  }
  svg text {
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}