/* ====================================================================
   JAMB -- project page.

   Black text on white. Where a colour is needed -- section titles,
   controls, charts, the dark panel behind the WebGL view -- it is navy
   #00274C or maize #FFCB05 and nothing else. The two exceptions are data
   encodings: the red->maize future-time track ramp with the two
   end-effector colours that must stay outside it, and the three pastels
   carried over from the paper's own teaser chart.
   ==================================================================== */

:root {
  --navy: #00274c;
  --maize: #ffcb05;

  --ink: #111111;
  --ink-2: #3d3d3d;
  --ink-3: #767676;
  --rule: #d9d9d9;
  --rule-2: #ededed;
  --ground: #ffffff;

  /* the WebGL panel is dark: a point cloud on white is unreadable */
  --panel: #00274c;
  --panel-2: #013663;
  --panel-rule: rgba(255, 255, 255, 0.16);
  --panel-ink: #eef3f8;
  --panel-ink-2: #a4bcd4;

  /* future-time ramp; mirrored numerically in js/colormap.js */
  --t0: #c81e1e;
  --t1: #e24a1a;
  --t2: #f4761a;
  --t3: #fda31a;
  --t4: #ffcb05;

  --left-ee: #35d0e8;
  --right-ee: #c9a0ff;

  /* paradigm colours, taken from the paper's teaser bar chart */
  --p-red: rgb(245, 203, 185);
  --p-blue: rgb(194, 212, 235);
  --p-green: rgb(195, 216, 187);

  --radius: 8px;
  --page: 1060px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.62;
  color: var(--ink);
  background: var(--ground);
  -webkit-font-smoothing: antialiased;
}

img,
video,
svg {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.22;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--ink);
}

p {
  margin: 0 0 1em;
}

b,
strong {
  font-weight: 600;
}

a {
  color: var(--ink);
  text-underline-offset: 2px;
}

.container {
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 3rem 0;
}

.section-tight {
  padding: 1.2rem 0 1.8rem;
}

.section-title {
  font-size: 1.85rem;
  color: var(--navy);
  margin-bottom: 1.1rem;
  padding-bottom: 0.4rem;
  border-bottom: 3px solid var(--maize);
  display: inline-block;
}

.block-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--navy);
  /* the gap above separates the two experiment blocks; the first one sits
     just under the section title instead */
  margin: 4rem 0 1rem;
}

.block-title:first-of-type {
  margin-top: 1.2rem;
}

/* opens a clearer break between two experiment blocks inside one section */
.block-title.block-title-lead {
  margin-top: 6.5rem;
}

.prose {
  color: var(--ink-2);
}

.prose p:last-child {
  margin-bottom: 0;
}

.caption {
  margin: 1rem 0 0;
  font-size: 0.92rem;
  color: var(--ink-3);
}

/* ---------------------------------------------------------------- hero */

.hero {
  padding: 3rem 0 2.2rem;
  text-align: center;
  border-bottom: 1px solid var(--rule);
}

.paper-title {
  /* the line break is explicit in the markup: the method name and the phrase
     it expands on stay together, the qualifier drops to line two */
  font-size: 2.9rem;
  font-weight: 600;
  line-height: 1.18;
  text-wrap: balance;
}

.authors {
  margin: 1.4rem 0 0.35rem;
  font-size: 1.22rem;
}

.authors sup {
  font-size: 0.62em;
  vertical-align: super;
  line-height: 0;
}

.affiliations {
  margin: 0;
  font-size: 1.02rem;
  color: var(--ink-3);
}

.author-note {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  color: var(--ink-3);
}

/* the separator is a rendered gap, so the affiliations wrap cleanly on
   narrow screens instead of relying on non-breaking spaces */
.affiliations .sep,
.author-note .sep {
  display: inline-block;
  width: 1.4rem;
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.42rem 1rem;
  border-radius: 999px;
  border: 1.5px solid var(--navy);
  background: transparent;
  color: var(--navy);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s, color 0.15s;
}

.btn svg {
  width: 15px;
  height: 15px;
  flex: none;
}

.btn:hover {
  background: var(--navy);
  color: var(--maize);
}

/* ---------------------------------------------------------------- teaser video */

.video-frame {
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
}

.video-frame video {
  width: 100%;
  aspect-ratio: 427 / 240;
  background: #000;
}

/* ---------------------------------------------------------------- paradigm + chart */

.paradigm {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 1fr);
  gap: 1.4rem;
  align-items: center;
}

.paradigm-fig {
  position: relative;
  margin: 0;
  line-height: 0;
}

.paradigm-fig img {
  width: 100%;
}

/* One hit region per paradigm band, measured from the cropped teaser. */
.hot {
  position: absolute;
  left: 23%;
  width: 77%;
  top: var(--top);
  height: var(--h);
  border: 2px solid transparent;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0);
  padding: 0;
  cursor: pointer;
  transition: background 0.18s, border-color 0.18s;
}

.paradigm.is-active .hot {
  background: rgba(255, 255, 255, 0.66);
}

.paradigm.is-active .hot.is-on {
  background: rgba(255, 255, 255, 0);
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(255, 203, 5, 0.55);
}

.hot:focus-visible {
  outline: 3px solid var(--navy);
  outline-offset: 2px;
}

.paradigm-chart {
  min-width: 0;
}

.chart-title {
  font-size: 0.98rem;
  color: var(--navy);
  margin-bottom: 0.6rem;
}

.chart {
  width: 100%;
}

.chart svg {
  width: 100%;
  height: auto;
  overflow: visible;
}

/* ---------------------------------------------------------------- figures */

.figure-frame {
  margin: 0 0 1.6rem;
}

.figure-frame img {
  width: 100%;
}

/* ---------------------------------------------------------------- shared controls */

.segmented {
  display: inline-flex;
  border: 1.5px solid var(--navy);
  border-radius: 999px;
  overflow: hidden;
  background: #fff;
}

/* [hidden] is a UA rule and loses to the author display above */
.segmented[hidden] {
  display: none;
}

.segmented button {
  appearance: none;
  border: 0;
  background: transparent;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--navy);
  padding: 0.35rem 0.9rem;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.segmented button + button {
  border-left: 1.5px solid var(--navy);
}

.segmented button:hover:not(.is-active) {
  background: rgba(0, 39, 76, 0.07);
}

.segmented button.is-active {
  background: var(--navy);
  color: var(--maize);
}

/* On the navy theater panel the white pill reads as a hole punched in the
   panel, and the active state (navy fill) disappears into the background --
   only its maize text sets it apart. Invert the pair there: maize fill marks
   the selection, navy carries the text. */
.theater .segmented {
  background: transparent;
  border-color: var(--maize);
}

.theater .segmented button {
  color: var(--panel-ink);
  /* shorter pill, same width: the font-size and the horizontal padding are
     left at the shared values, so only the line box and the vertical padding
     give up height. */
  line-height: 1.2;
  padding-top: 0.28rem;
  padding-bottom: 0.28rem;
}

.theater .segmented button + button {
  border-left-color: var(--maize);
}

.theater .segmented button:hover:not(.is-active) {
  background: rgba(255, 203, 5, 0.16);
}

.theater .segmented button.is-active {
  background: var(--maize);
  color: var(--navy);
  font-weight: 600;
}

.loading {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--ink-3);
  border: 1px dashed var(--rule);
  border-radius: var(--radius);
}

/* ---------------------------------------------------------------- gallery */

.gallery-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.7rem;
}

/* Every clip is shown at the same height, whatever its aspect ratio, so
   switching tab or mode does not resize the page. */
.gallery-stage {
  position: relative;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.gallery-canvas {
  height: 100%;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  border-radius: 4px;
}

.gallery-transport {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-top: 0.6rem;
}

.transport-btn {
  appearance: none;
  border: 1.5px solid var(--navy);
  background: #fff;
  color: var(--navy);
  border-radius: 999px;
  width: 1.95rem;
  height: 1.95rem;
  font-size: 0.74rem;
  line-height: 1;
  cursor: pointer;
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, color 0.15s;
}

.transport-btn:hover {
  background: var(--navy);
  color: var(--maize);
}

.transport-speed {
  width: auto;
  padding: 0 0.6rem;
  font-variant-numeric: tabular-nums;
}

.transport-time {
  font-size: 0.76rem;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
  flex: none;
  min-width: 5.4rem;
  text-align: right;
}

input[type="range"] {
  appearance: none;
  -webkit-appearance: none;
  color: var(--ink);
  height: 3px;
  border-radius: 2px;
  background: var(--rule);
  outline: none;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

input[type="range"]::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid #fff;
}

.transport-seek {
  flex: 1;
  min-width: 0;
}

/* episode pager: [< 1/2 >] */
.gallery-pager {
  display: inline-flex;
  align-items: center;
  gap: 0.1rem;
  border: 1.5px solid var(--navy);
  border-radius: 999px;
  padding: 0.08rem;
  background: #fff;
}

.gallery-pager[hidden] {
  display: none;
}

.pager-btn {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--navy);
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 50%;
  font-size: 0.78rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.pager-btn:hover:not(:disabled) {
  background: var(--maize);
}

.pager-btn:disabled {
  opacity: 0.28;
  cursor: default;
}

.pager-count {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--navy);
  font-variant-numeric: tabular-nums;
  padding: 0 0.28rem;
  min-width: 2.5rem;
  text-align: center;
}

.gallery-rail {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(112px, 1fr));
  gap: 0.45rem;
  margin-top: 0.8rem;
}

.rail-tile {
  appearance: none;
  border: 1px solid var(--rule);
  background: #fff;
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s;
}

.rail-tile:hover {
  border-color: var(--ink-3);
}

.rail-tile.is-on {
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(255, 203, 5, 0.55);
}

.rail-media {
  aspect-ratio: 4 / 3;
  background: var(--rule-2);
  overflow: hidden;
}

.rail-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.rail-name {
  font-size: 0.72rem;
  font-weight: 500;
  line-height: 1.25;
  padding: 0.32rem 0.42rem 0.06rem;
  color: var(--ink);
}

.rail-group {
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 0 0.42rem 0.36rem;
}

/* ---------------------------------------------------------------- theater */

.theater {
  background: var(--panel);
  border-radius: var(--radius);
  padding: 0.85rem;
  color: var(--panel-ink);
}

.theater-bar {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.75rem;
}

.bar-label {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--panel-ink-2);
}

.task-select {
  appearance: none;
  font: inherit;
  font-size: 0.86rem;
  color: var(--panel-ink);
  background: var(--panel-2);
  border: 1px solid var(--panel-rule);
  border-radius: 6px;
  padding: 0.32rem 2rem 0.32rem 0.65rem;
  cursor: pointer;
  background-image: linear-gradient(45deg, transparent 50%, var(--maize) 50%),
    linear-gradient(135deg, var(--maize) 50%, transparent 50%);
  background-position: calc(100% - 15px) 52%, calc(100% - 10px) 52%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.theater-panes {
  display: grid;
  grid-template-columns: minmax(230px, 0.8fr) minmax(0, 1.6fr);
  gap: 0.75rem;
}

.pane {
  background: var(--panel-2);
  border: 1px solid var(--panel-rule);
  border-radius: var(--radius);
  padding: 0.55rem;
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.pane-head {
  display: block;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--panel-ink-2);
  margin-bottom: 0.45rem;
}

.obs-stack {
  /* the observation is 2:1 and the 3D pane beside it is much taller;
     centring in the leftover space keeps the dead space symmetric */
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

#obs-canvas {
  width: 100%;
  height: auto;
  border-radius: 5px;
  cursor: crosshair;
  background: #000;
}

.pane-3d {
  padding-bottom: 0.55rem;
}

#scene-canvas {
  width: 100%;
  height: 380px;
  border-radius: 5px;
  background: #001b35;
  display: block;
  touch-action: none;
}

.cam-presets {
  position: absolute;
  top: 0.45rem;
  right: 0.55rem;
  display: flex;
  gap: 0.22rem;
  z-index: 2;
}

.cam-presets button {
  appearance: none;
  border: 1px solid var(--panel-rule);
  background: rgba(0, 20, 40, 0.7);
  color: var(--panel-ink-2);
  font: inherit;
  font-size: 0.66rem;
  border-radius: 4px;
  padding: 0.13rem 0.42rem;
  cursor: pointer;
}

.cam-presets button:hover {
  color: var(--navy);
  background: var(--maize);
  border-color: var(--maize);
}

.theater-controls {
  margin-top: 0.75rem;
  display: grid;
  gap: 0.45rem;
}

.scrub {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.scrub label {
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--panel-ink-2);
  flex: none;
  width: 7rem;
}

.scrub input[type="range"] {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.2);
}

.scrub input[type="range"]::-webkit-slider-thumb {
  background: var(--maize);
  border-color: var(--panel);
}

.scrub input[type="range"]::-moz-range-thumb {
  background: var(--maize);
  border-color: var(--panel);
}

.scrub output {
  font-size: 0.74rem;
  font-variant-numeric: tabular-nums;
  color: var(--panel-ink);
  flex: none;
  min-width: 7.2rem;
  text-align: right;
}

.scrub.horizon input[type="range"] {
  background: linear-gradient(90deg, var(--t0), var(--t1), var(--t2), var(--t3), var(--t4));
}

.play-btn {
  appearance: none;
  flex: none;
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 50%;
  border: 1.5px solid var(--maize);
  background: transparent;
  color: var(--maize);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.68rem;
  line-height: 1;
  transition: background 0.15s, color 0.15s;
}

.play-btn:hover,
.play-btn.is-on {
  background: var(--maize);
  color: var(--navy);
}

.layer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.38rem;
  margin-top: 0.15rem;
}

.toggle {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  font: inherit;
  font-size: 0.72rem;
  border: 1px solid var(--panel-rule);
  background: var(--panel-2);
  color: var(--panel-ink-2);
  border-radius: 999px;
  padding: 0.2rem 0.6rem;
  cursor: pointer;
}

.toggle.is-on {
  color: var(--panel-ink);
  border-color: var(--maize);
}

.toggle .swatch {
  width: 12px;
  height: 8px;
  border-radius: 2px;
  display: inline-block;
  opacity: 0.35;
}

.toggle.is-on .swatch {
  opacity: 1;
}

.theater-legend {
  margin-top: 0.75rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--panel-rule);
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.3rem;
  align-items: center;
  font-size: 0.72rem;
  color: var(--panel-ink-2);
}

.ramp {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.ramp .bar {
  width: 105px;
  height: 7px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--t0), var(--t1), var(--t2), var(--t3), var(--t4));
}

.legend-hint {
  margin-left: auto;
  font-style: italic;
}

.theater-note {
  margin: 0.65rem 0 0;
  font-size: 0.74rem;
  color: var(--panel-ink-2);
  display: none;
}

.theater-fallback {
  padding: 1.5rem;
  text-align: center;
  color: var(--panel-ink-2);
}

/* ------------------------------------------------------------ results table */

.table-wrap {
  margin: 0 auto;
  max-width: 620px;
  overflow-x: auto;
}

/* the caption sits under the table, centred on it, not under the full-width
   block; the class pairing wins over .chart-note's own margin shorthand */
.chart-note.table-note {
  max-width: 620px;
  margin-inline: auto;
  text-align: center;
}

/* .block-note carries a negative top margin to hug a heading directly
   above it; that same pull makes a .block-note directly AFTER a table
   ride up into the table's bottom border instead. Override just that
   adjacency rather than touching the base rule other callers rely on. */
.table-wrap + .block-note {
  margin-top: 1rem;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.results-table th,
.results-table td {
  padding: 0.55rem 0.9rem;
  text-align: right;
  border-bottom: 1px solid var(--rule);
  font-variant-numeric: tabular-nums;
}

.results-table th:first-child,
.results-table td:first-child {
  text-align: left;
}

.results-table thead th {
  background: var(--navy);
  color: var(--panel-ink);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border-bottom: none;
}

.results-table td.hl,
.results-table th.hl {
  background: rgba(0, 39, 76, 0.055);
}

.results-table thead th.hl {
  background: var(--panel-2);
}

.results-table tbody tr.is-ours td {
  background: rgba(255, 203, 5, 0.16);
  border-top: 2px solid var(--maize);
  border-bottom: 2px solid var(--maize);
}

.results-table tbody tr.is-ours td.hl {
  background: rgba(255, 203, 5, 0.34);
}

/* ---------------------------------------------------------------- charts */

.chart-block {
  margin-top: 1.4rem;
}

.chart-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
  margin-bottom: 0.8rem;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.85rem;
  margin-bottom: 0.6rem;
  font-size: 0.78rem;
  color: var(--ink-2);
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
}

.legend i {
  width: 13px;
  height: 13px;
  border-radius: 3px;
  border: 1px solid var(--navy);
  display: inline-block;
}

.chart-note {
  margin: 0.6rem 0 0;
  font-size: 0.82rem;
  color: var(--ink-3);
}

.chart text {
  font-family: inherit;
}

.chart .axis-line {
  stroke: var(--ink-3);
  stroke-width: 1;
}

.chart .grid-line {
  stroke: var(--rule);
  stroke-width: 1;
}

.chart .tick-text {
  font-size: 11px;
  fill: var(--ink-3);
}

.chart .group-text {
  font-size: 12px;
  fill: var(--ink-2);
  font-weight: 500;
}

.chart .value-text {
  font-size: 10.5px;
  fill: var(--ink-2);
  font-variant-numeric: tabular-nums;
}

.chart .col-head {
  font-size: 11.5px;
  font-weight: 600;
  fill: var(--navy);
  letter-spacing: 0.02em;
}

/* ---------------------------------------------------------------- takeaways */

.takeaways {
  list-style: none;
  counter-reset: take;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.4rem;
}

.takeaways li {
  counter-increment: take;
  border-top: 3px solid var(--navy);
  padding-top: 0.75rem;
}

.takeaways h3 {
  font-size: 0.98rem;
  color: var(--navy);
  margin-bottom: 0.4rem;
}

.takeaways h3::before {
  content: counter(take) ". ";
  color: var(--maize);
  font-weight: 700;
}

.takeaways p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-2);
}

/* ---------------------------------------------------------------- bibtex */

.bibtex-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.copy-button {
  appearance: none;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 500;
  border: 1.5px solid var(--navy);
  background: #fff;
  color: var(--navy);
  border-radius: 999px;
  padding: 0.32rem 0.95rem;
  cursor: pointer;
  flex: none;
  transition: background 0.15s, color 0.15s;
}

.copy-button:hover {
  background: var(--navy);
  color: var(--maize);
}

#citation pre {
  margin: 0;
  background: #fafafa;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--maize);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  overflow-x: auto;
}

#citation code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.8rem;
  line-height: 1.6;
  color: var(--ink);
  white-space: pre;
}

/* ---------------------------------------------------------------- responsive */

@media (max-width: 900px) {
  .paradigm {
    grid-template-columns: 1fr;
  }

  .theater-panes {
    grid-template-columns: 1fr;
  }

  #scene-canvas {
    height: 320px;
  }

  .obs-stack {
    max-width: 420px;
    margin: 0 auto;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .section {
    padding: 2.2rem 0;
  }

  .container {
    padding: 0 16px;
  }

  .paper-title {
    font-size: 1.95rem;
  }

  .authors {
    font-size: 1.05rem;
  }

  .affiliations {
    font-size: 0.92rem;
  }

  .author-note {
    font-size: 0.82rem;
  }

  .section-title {
    font-size: 1.45rem;
  }

  .block-title {
    font-size: 1.15rem;
    margin-top: 2.8rem;
  }

  .block-title.block-title-lead {
    margin-top: 4.2rem;
  }

  .gallery-stage {
    height: 210px;
  }

  .gallery-rail {
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  }

  .scrub {
    flex-wrap: wrap;
  }

  .scrub label {
    width: auto;
  }

  .scrub input[type="range"] {
    order: 3;
    flex-basis: 100%;
  }

  .scrub output {
    margin-left: auto;
  }

  .legend-hint {
    margin-left: 0;
  }
}

@media (max-width: 560px) {
  /* three source labels do not fit on one line on a phone */
  .gallery-bar .segmented {
    flex-wrap: wrap;
    justify-content: center;
  }

  .segmented button {
    font-size: 0.73rem;
    padding: 0.3rem 0.6rem;
  }

  .gallery-bar,
  .chart-bar {
    justify-content: center;
  }
}

/* ------------------------------------------------------------ sim3d gallery */

.block-note {
  color: var(--ink-3);
  font-size: 0.92rem;
  margin: -0.3rem 0 1rem;
}

.sim3d-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (max-width: 640px) {
  .sim3d-grid {
    grid-template-columns: 1fr;
  }
}

.sim3d-card {
  background: var(--panel-2);
  border: 1px solid var(--panel-rule);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.sim3d-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--panel-rule);
}


.sim3d-badge {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  font-size: 0.66rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.sim3d-badge.is-success {
  background: rgba(120, 200, 150, 0.18);
  color: #8ee0ab;
}

.sim3d-badge.is-failure {
  background: rgba(240, 120, 110, 0.18);
  color: #f5a49c;
}

.sim3d-canvas-wrap {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--panel);
}

.sim3d-canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.sim3d-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  color: var(--panel-ink-2);
  background: var(--panel);
  text-align: center;
  padding: 0.6rem;
}

.sim3d-readout {
  padding: 0.35rem 0.6rem;
  font-size: 0.72rem;
  color: var(--panel-ink-2);
  font-variant-numeric: tabular-nums;
  border-top: 1px solid var(--panel-rule);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}