.imu-browser-page-hero {
  grid-template-columns: minmax(18rem, 0.8fr) minmax(0, 1.2fr);
}

.imu-browser-page-hero .demo-page-image img {
  aspect-ratio: 1.7 / 1;
  object-fit: cover;
}

#run-browser-demo,
#quick-start,
#expected-output,
#understand-results,
#parameters,
#use-your-own-recording,
#local-compute {
  scroll-margin-top: 6rem;
}

.imu-browser-steps {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.imu-browser-steps .demo-step {
  min-height: 11rem;
}

.imu-demo-shell {
  --demo-blue: #315f92;
  --demo-teal: #168c7e;
  --demo-danger: #b23c55;
  margin: 1.25rem 0 2.2rem;
  color: var(--research-text);
}

.imu-demo-shell [hidden] {
  display: none !important;
}

.imu-demo-card {
  margin-bottom: 0.85rem;
  padding: clamp(1rem, 2.5vw, 1.35rem);
  border: 1px solid var(--research-border);
  border-radius: 0.72rem;
  background: var(--research-surface);
  box-shadow: 0 12px 34px rgba(23, 43, 77, 0.06);
}

.imu-demo-input-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(17rem, 0.85fr);
  gap: 1rem;
}

.imu-demo-section-label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--research-muted);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.imu-demo-drop {
  display: flex;
  min-height: 9.4rem;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border: 1.5px dashed color-mix(in srgb, var(--research-accent) 52%, var(--research-border));
  border-radius: 0.62rem;
  background: color-mix(in srgb, var(--research-soft) 74%, transparent);
  text-align: center;
  transition: border-color 150ms ease, background 150ms ease, transform 150ms ease;
}

.imu-demo-drop[data-dragging="true"] {
  border-color: var(--demo-teal);
  background: color-mix(in srgb, var(--demo-teal) 10%, var(--research-surface));
  transform: translateY(-1px);
}

.imu-demo-drop input {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  clip-path: inset(50%);
}

.imu-demo-drop label {
  display: flex;
  width: 100%;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  gap: 0.38rem;
}

.imu-demo-drop__icon {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 50%;
  color: var(--research-accent);
  background: color-mix(in srgb, var(--research-accent) 10%, transparent);
  font-size: 1.25rem;
}

.imu-demo-drop strong {
  color: var(--research-text);
  font-size: 0.9rem;
}

.imu-demo-drop small,
.imu-demo-file-name {
  color: var(--research-muted);
  font-size: 0.7rem;
}

.imu-demo-file-name {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.imu-demo-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

.imu-demo-control {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 0.35rem;
}

.imu-demo-control--wide {
  grid-column: 1 / -1;
}

.imu-demo-control label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  color: var(--research-text);
  font-size: 0.72rem;
  font-weight: 700;
}

.imu-demo-control output {
  color: var(--research-accent);
  font-variant-numeric: tabular-nums;
}

.imu-demo-control select {
  width: 100%;
  min-height: 2.25rem;
  padding: 0.4rem 0.55rem;
  border: 1px solid var(--research-border);
  border-radius: 0.45rem;
  color: var(--research-text);
  background: var(--research-surface);
  font: inherit;
  font-size: 0.74rem;
}

.imu-demo-control input[type="range"] {
  width: 100%;
  margin: 0.35rem 0 0;
  accent-color: var(--research-accent);
}

.imu-demo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1rem;
}

.md-typeset .imu-demo-button,
.md-typeset a.imu-demo-button {
  display: inline-flex;
  min-height: 2.45rem;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.9rem;
  border: 1px solid var(--research-border);
  border-radius: 0.48rem;
  color: var(--research-text);
  background: var(--research-surface);
  cursor: pointer;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 800;
  text-decoration: none;
}

.md-typeset .imu-demo-button--primary {
  border-color: #204b75;
  color: #ffffff;
  background: linear-gradient(135deg, #172b4d, #315f92);
}

.md-typeset .imu-demo-button:is(:hover, :focus-visible) {
  border-color: var(--research-accent);
  transform: translateY(-1px);
}

.md-typeset .imu-demo-button:disabled {
  cursor: wait;
  opacity: 0.55;
  transform: none;
}

.imu-demo-privacy {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  margin: 0.85rem 0 0;
  padding: 0.65rem 0.75rem;
  border-radius: 0.48rem;
  color: color-mix(in srgb, var(--demo-teal) 78%, var(--research-text));
  background: color-mix(in srgb, var(--demo-teal) 9%, var(--research-surface));
  font-size: 0.71rem;
  line-height: 1.55;
}

.imu-demo-status {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.15rem 0.7rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border: 1px solid var(--research-border);
  border-radius: 0.62rem;
  background: var(--research-surface);
}

.imu-demo-status__dot {
  grid-row: 1 / 3;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--research-muted);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--research-muted) 10%, transparent);
}

.imu-demo-status[data-kind="running"] .imu-demo-status__dot {
  background: var(--research-accent);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--research-accent) 12%, transparent);
  animation: imu-demo-pulse 1.3s ease-in-out infinite;
}

.imu-demo-status[data-kind="success"] .imu-demo-status__dot {
  background: var(--demo-teal);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--demo-teal) 12%, transparent);
}

.imu-demo-status[data-kind="error"] .imu-demo-status__dot {
  background: var(--demo-danger);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--demo-danger) 12%, transparent);
}

@keyframes imu-demo-pulse {
  50% { opacity: 0.48; transform: scale(0.8); }
}

.imu-demo-status strong {
  color: var(--research-text);
  font-size: 0.78rem;
}

.imu-demo-status span {
  color: var(--research-muted);
  font-size: 0.68rem;
}

.imu-demo-status progress {
  grid-column: 1 / -1;
  width: 100%;
  height: 0.32rem;
  margin-top: 0.55rem;
  overflow: hidden;
  border: 0;
  border-radius: 999px;
  background: var(--research-soft);
  accent-color: var(--research-accent);
}

.imu-demo-status progress::-webkit-progress-bar { background: var(--research-soft); }
.imu-demo-status progress::-webkit-progress-value { background: var(--research-accent); }
.imu-demo-status progress::-moz-progress-bar { background: var(--research-accent); }

.imu-demo-results {
  scroll-margin-top: 6rem;
}

.imu-demo-summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.imu-demo-stat {
  padding: 0.8rem;
  border: 1px solid var(--research-border);
  border-radius: 0.56rem;
  background: var(--research-surface);
}

.imu-demo-stat strong {
  display: block;
  color: var(--research-text);
  font-size: 1.3rem;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}

.imu-demo-stat span {
  color: var(--research-muted);
  font-size: 0.65rem;
}

.imu-demo-runtime {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.75rem;
}

.imu-demo-runtime span {
  padding: 0.28rem 0.52rem;
  border: 1px solid var(--research-border);
  border-radius: 999px;
  color: var(--research-muted);
  background: var(--research-surface);
  font-size: 0.65rem;
  font-weight: 700;
}

.imu-demo-tabs {
  overflow: hidden;
  border: 1px solid var(--research-border);
  border-radius: 0.72rem;
  background: var(--research-surface);
}

.imu-demo-tabs__list {
  display: flex;
  gap: 0;
  overflow-x: auto;
  border-bottom: 1px solid var(--research-border);
  background: var(--research-soft);
}

.md-typeset .imu-demo-tab {
  min-height: 2.75rem;
  padding: 0.65rem 0.95rem;
  border: 0;
  border-right: 1px solid var(--research-border);
  color: var(--research-muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  font-weight: 800;
  white-space: nowrap;
}

.md-typeset .imu-demo-tab[aria-selected="true"] {
  color: var(--research-accent);
  background: var(--research-surface);
  box-shadow: inset 0 -2px var(--research-accent);
}

.imu-demo-panel {
  padding: clamp(0.65rem, 2vw, 1rem);
}

.imu-demo-panel canvas {
  display: block;
  width: 100%;
  border-radius: 0.4rem;
  background: var(--research-surface);
}

.imu-demo-chart-note {
  margin: 0.4rem 0 0;
  color: var(--research-muted);
  font-size: 0.66rem;
}

.imu-demo-table-wrap {
  overflow-x: auto;
}

.md-typeset .imu-demo-table {
  width: 100%;
  margin: 0;
  border-collapse: collapse;
  font-size: 0.72rem;
}

.md-typeset .imu-demo-table th,
.md-typeset .imu-demo-table td {
  padding: 0.6rem 0.7rem;
  border-bottom: 1px solid var(--research-border);
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.md-typeset .imu-demo-table th:first-child,
.md-typeset .imu-demo-table td:first-child {
  text-align: left;
}

.md-typeset .imu-demo-table th {
  color: var(--research-text);
  background: var(--research-soft);
}

.imu-demo-empty {
  padding: 1.3rem !important;
  color: var(--research-muted);
  text-align: center !important;
  white-space: normal !important;
}

.imu-demo-download {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.85rem;
}

.imu-demo-details-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin: 1rem 0;
}

.imu-demo-detail {
  padding: 0.9rem;
  border: 1px solid var(--research-border);
  border-radius: 0.58rem;
  background: var(--research-surface);
}

.imu-demo-detail strong {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--research-text);
  font-size: 0.78rem;
}

.imu-demo-detail p {
  margin: 0;
  color: var(--research-muted);
  font-size: 0.72rem;
}

@media (max-width: 760px) {
  .imu-browser-page-hero { grid-template-columns: 1fr; }
  .imu-browser-steps { grid-template-columns: 1fr; }
  .imu-browser-steps .demo-step { min-height: 0; }
  .imu-demo-input-grid { grid-template-columns: 1fr; }
  .imu-demo-summary { grid-template-columns: 1fr 1fr; }
  .imu-demo-details-grid { grid-template-columns: 1fr; }
  .imu-demo-card { padding: 0.85rem; }
}

@media (max-width: 480px) {
  .imu-demo-controls { grid-template-columns: 1fr; }
  .imu-demo-control--wide { grid-column: auto; }
  .imu-demo-actions { display: grid; grid-template-columns: 1fr; }
  .imu-demo-summary { gap: 0.45rem; }
  .imu-demo-stat strong { font-size: 1.05rem; }
  .imu-demo-status { padding: 0.75rem; }
}

@media (prefers-reduced-motion: reduce) {
  .imu-demo-status[data-kind="running"] .imu-demo-status__dot { animation: none; }
  .md-typeset .imu-demo-button { transition: none; }
}