:root {
  --bg: #090f21;
  --ink: #e4eaf8;
  --muted: #8e9fbe;
  --acid: #bfe7ff;
  --line: #414f72;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}
button,
input,
select {
  font: inherit;
}
button {
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
canvas:focus-visible {
  outline: 1px solid var(--acid);
  outline-offset: 5px;
}
button:disabled {
  opacity: 0.2;
  cursor: default;
}
svg {
  display: block;
}
button svg {
  width: 21px;
  height: 21px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.1;
}
#experience {
  --timeline-inset: 3.4%;
  --history-height: 168px;
  --timeline-header: 32px;
  --timeline-bottom: calc(44px + env(safe-area-inset-bottom, 0px));
  --timeline-controls-space: 24px;
  --timeline-clearance: calc(
    var(--timeline-bottom) + var(--history-height) + var(--timeline-header) +
      var(--timeline-controls-space)
  );
  position: relative;
  min-height: 0;
  height: 100svh;
  height: 100dvh;
  overflow: hidden;
}
#scene-container {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse at 45% 42%,
    #162a42 0%,
    #111a35 38%,
    #090f21 79%
  );
}
#geometry-canvas {
  position: relative;
}
#geometry-canvas {
  height: 100%;
  width: 100%;
  display: block;
  touch-action: none;
  cursor: grab;
}
#geometry-canvas:active {
  cursor: grabbing;
}
#scene-fallback {
  position: absolute;
  inset: 45% 22%;
  text-align: center;
  font-size: 14px;
  color: var(--muted);
}
header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 30px 3.2%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
}
header > * {
  pointer-events: auto;
}
.wordmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  letter-spacing: -0.4px;
  font-weight: 500;
}
.wordmark > svg {
  width: 30px;
  height: 30px;
  fill: none;
  stroke: #c6c7ff;
  stroke-width: 1.1;
}
.wordmark circle {
  fill: #7fe8f0;
}
.speed {
  font: 11px var(--mono);
  color: #93a1c7;
  margin: 2px 0 0 8px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 24px;
}
.contribute-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 36px;
  font-size: 12px;
  white-space: nowrap;
}
.contribute-call {
  color: var(--acid);
}
.contribute-link:hover {
  color: var(--acid);
}
.contribute-link:hover .contribute-call {
  text-decoration: underline;
  text-underline-offset: 4px;
}
.icon-button {
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #94a1c2;
}
.icon-button:hover {
  color: var(--acid);
}
.energy {
  position: absolute;
  left: 3.4%;
  top: 122px;
  pointer-events: none;
}
.energy-explainer {
  margin-bottom: 10px;
  color: #a9bad7;
  font: 11px/16px var(--sans);
}
.energy-meta {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-top: 14px;
}
#candidate-title {
  font: 10px var(--mono);
  color: #9cadd2;
  letter-spacing: 0.2px;
}
.energy h1 {
  font: clamp(25px, 2.6vw, 43px) var(--mono);
  letter-spacing: -1.4px;
  font-weight: 400;
  margin: 0;
  color: #e9efff;
  white-space: nowrap;
}
.exponent {
  font-size: 0.52em;
  vertical-align: super;
  margin-left: 3px;
  letter-spacing: 0;
  color: #a7ade3;
}
.unit {
  font: 16px var(--sans);
  margin-left: 10px;
  color: #a1b2d3;
  letter-spacing: 0;
}
#energy-change {
  font: 12px var(--mono);
  color: #8ae5d0;
}
#equivalence {
  position: absolute;
  width: 290px;
  top: 125px;
  right: 7%;
  text-align: center;
  pointer-events: none;
}
#equivalence-canvas {
  display: block;
  width: 100%;
  height: 136px;
}
.equivalence-heading {
  display: block;
  color: #90a0c3;
  font: 9px var(--mono);
  margin-bottom: 9px;
}
.antimatter-value {
  color: #ceb8ff;
  font: 22px var(--mono);
  letter-spacing: -0.7px;
  white-space: nowrap;
}
.antimatter-unit {
  font: 13px var(--sans);
  letter-spacing: 0;
}
.matter-value {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 8px;
  color: #ffd39c;
  font: 10px var(--mono);
}
.equivalence-formula {
  color: #8c9abc;
  font: 9px var(--mono);
}
.scene-tools {
  position: absolute;
  right: 3.2%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.scene-tools > div {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.scene-tools button {
  color: #8797bf;
  width: 30px;
  height: 28px;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font: 9px var(--mono);
  transition: color 0.2s;
}
.scene-tools button:hover {
  color: #d7e4ff;
}
#motion-toggle[aria-pressed="true"] {
  color: #ffce95;
}
.play-symbol {
  display: none;
}
#motion-toggle[aria-pressed="false"] .play-symbol {
  display: block;
}
#motion-toggle[aria-pressed="false"] .pause-symbol {
  display: none;
}
.scene-tools [aria-pressed="true"] {
  color: #bbcefa;
}
.scene-tools [aria-pressed="false"] {
  color: #4f618b;
}
.scene-tools .camera-presets {
  gap: 9px;
}
.camera-presets .selected {
  color: #c6cdff;
}
.field-key {
  position: absolute;
  left: 3.6%;
  top: 47%;
  transform: translateY(-10%);
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 11px;
  pointer-events: none;
  color: #98a7ca;
  font: 8px var(--mono);
}
.field-key .ramp {
  height: 98px;
  width: 3px;
  position: relative;
  background: linear-gradient(0deg, #ff6e90, #0f172b 50%, #4fe1ed);
}
.ramp i {
  position: absolute;
  left: -3px;
  top: 50%;
  width: 9px;
  height: 1px;
  background: #8f9dc4;
}
.density-unit {
  margin-top: 2px;
  color: #94a7ca;
  font-size: 8px;
}
.scale-bar {
  position: absolute;
  right: 8%;
  bottom: 282px;
  text-align: center;
  font: 8px var(--mono);
  color: #8e9fc3;
  pointer-events: none;
}
.scale-bar i {
  display: block;
  width: 50px;
  height: 4px;
  border: 1px solid #7387b6;
  border-top: 0;
  margin-top: 6px;
}
.timeline {
  position: absolute;
  z-index: 2;
  bottom: var(--timeline-bottom);
  left: 0;
  right: 0;
  padding-bottom: var(--timeline-controls-space);
  border-top: 1px solid #718bb545;
  background: linear-gradient(180deg, #0b1529, #090f21);
  box-shadow: 0 -12px 36px #050a143d;
  pointer-events: none;
}
.timeline:not([open]) {
  padding-bottom: 0;
  background: #0b1529de;
}
.timeline summary {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 9px;
  min-height: var(--timeline-header);
  padding: 0 var(--timeline-inset);
  list-style: none;
  color: #adbedb;
  font: 10px var(--mono);
  cursor: pointer;
  pointer-events: auto;
  user-select: none;
}
.timeline summary::-webkit-details-marker {
  display: none;
}
.timeline summary::marker {
  content: "";
}
.timeline summary:hover {
  color: #e4eaf8;
  background: #bfe7ff05;
}
.timeline summary:focus-visible {
  outline: 1px solid var(--acid);
  outline-offset: -4px;
}
.timeline summary svg {
  width: 12px;
  height: 12px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.25;
  transition: transform 0.18s;
}
.timeline:not([open]) summary svg {
  transform: rotate(180deg);
}
.timeline-content {
  position: relative;
  height: var(--history-height);
  margin: 0 var(--timeline-inset);
}
#history-chart {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: auto;
}
.timeline text {
  fill: #8292b9;
  font: 9px var(--mono);
}
.timeline .value-label {
  fill: #b4c2e1;
  font-size: 11px;
}
.timeline .title-label {
  fill: #8fa2c8;
  font: 10px var(--sans);
}
.timeline .selected-value {
  fill: #e2eaff;
}
.timeline .axis-tick {
  font-size: 8px;
  fill: #97a3c4;
}
.timeline .axis-unit {
  font-size: 8px;
  fill: #9da9cb;
}
.timeline .date-tick {
  font-size: 8px;
  fill: #a7b4d4;
}
.timeline .hour-tick {
  font-size: 7px;
  fill: #7e8eb7;
}
.timeline [role="button"] {
  cursor: pointer;
}
.timeline [role="button"]:focus {
  outline: none;
}
.timeline [role="button"]:focus circle {
  stroke: #e0edc7;
  stroke-width: 2;
}
.timeline-controls {
  position: absolute;
  bottom: -17px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 14px;
  pointer-events: auto;
  opacity: 0;
  transition: opacity 0.2s;
}
.timeline:hover .timeline-controls,
.timeline:focus-within .timeline-controls {
  opacity: 1;
}
.timeline-controls button {
  font-size: 14px;
  color: #91ab7e;
}
.timeline-controls input {
  width: 110px;
  accent-color: #bdd1ff;
  height: 2px;
  cursor: pointer;
}
#experience:has(.timeline[open]) .scene-tools {
  top: auto;
  bottom: calc(var(--timeline-clearance) + 12px);
  transform: none;
}
#experience:has(.timeline[open]) .scale-bar {
  bottom: calc(var(--timeline-clearance) + 12px);
}
#experience:has(.timeline[open]) #slice-panel {
  bottom: calc(var(--timeline-clearance) + 48px);
}
footer {
  position: absolute;
  bottom: calc(25px + env(safe-area-inset-bottom, 0px));
  left: 3.4%;
  right: 3.4%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font: 9px var(--mono);
  color: #899bbd;
}
footer .evidence {
  display: flex;
  align-items: center;
  gap: 7px;
}
footer .evidence i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #9bdcbd;
}
footer > div {
  display: flex;
  gap: 20px;
}
footer button {
  padding: 0;
  color: #9aacca;
  font: 9px var(--mono);
}
footer button:hover {
  color: #d7e5ff;
}
#error-message {
  position: absolute;
  top: 90px;
  right: 3.4%;
  max-width: 360px;
  background: #202d4d;
  border: 1px solid #7485b0;
  padding: 13px 16px;
  font-size: 11px;
  line-height: 1.5;
  z-index: 3;
  color: #deceac;
  border-radius: 3px;
}
#slice-panel {
  position: absolute;
  right: 8%;
  bottom: 292px;
  width: 242px;
  padding: 13px 15px;
  background: #121d35f2;
  border: 1px solid #53658a80;
  border-radius: 5px;
  backdrop-filter: blur(12px);
}
.slice-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}
.slice-controls select {
  background: none;
  color: #c7d4ef;
  border: 0;
  border-bottom: 1px solid #42577f;
  padding: 4px 12px 5px 0;
  font: 10px var(--mono);
  cursor: pointer;
  max-width: 55%;
}
.slice-controls .icon-button {
  margin-left: auto;
  font-size: 20px;
  line-height: 1;
}
.density-wrap {
  position: relative;
  height: 190px;
  margin-top: 7px;
}
.density-wrap canvas {
  width: 100%;
  height: 100%;
  display: block;
  cursor: crosshair;
}
#density-x,
#density-y {
  position: absolute;
  font: 8px var(--mono);
  color: #9eadd1;
  pointer-events: none;
}
#density-y {
  left: -15px;
  top: 50%;
  transform: rotate(-90deg);
}
#density-x {
  bottom: -2px;
  left: 50%;
}
#density-readout {
  min-height: 12px;
  font: 8px var(--mono);
  color: #a2b0cf;
  margin-top: 8px;
  text-align: center;
}
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
dialog {
  border: 1px solid #4c5e86;
  border-radius: 6px;
  background: #111b32;
  color: #dfe7fa;
  width: 650px;
  max-width: 92vw;
  max-height: 85svh;
  padding: 0;
}
dialog::backdrop {
  background: #070c1baa;
  backdrop-filter: blur(8px);
}
.dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 25px;
}
.dialog-heading h2 {
  font-size: 17px;
  font-weight: 500;
  margin: 0;
}
.dialog-body {
  padding: 0 25px 25px;
  font-size: 12px;
  line-height: 1.75;
}
.dialog-body dl {
  margin: 0 0 22px;
  display: grid;
  grid-template-columns: 135px minmax(0, 1fr);
  gap: 8px 12px;
}
.dialog-body dt {
  color: #9fafd1;
}
.dialog-body dd {
  margin: 0;
  font: 10px/1.8 var(--mono);
  overflow-wrap: anywhere;
  color: #c5d2ef;
}
.dialog-body h3 {
  font-size: 12px;
  font-weight: 500;
  margin: 22px 0 8px;
}
.dialog-body pre {
  padding: 14px;
  background: #1d2b48;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 10px/1.7 var(--mono);
  border-radius: 4px;
}
.dialog-body p {
  color: #a1b0d0;
  margin: 10px 0;
}
.dialog-body a {
  color: #9ed9fc;
  border-bottom: 1px solid #668ab6;
}
#ray-dialog {
  width: 480px;
}
#ray-select {
  width: 100%;
  margin-bottom: 8px;
}
#ray-dialog .dialog-body dl {
  grid-template-columns: 135px minmax(0, 1fr);
}
[hidden] {
  display: none !important;
}
@media (min-width: 1700px) {
  .energy {
    top: 142px;
  }
  .energy h1 {
    font-size: 45px;
  }
  #experience {
    --timeline-bottom: calc(60px + env(safe-area-inset-bottom, 0px));
    --history-height: 188px;
  }
  .scale-bar {
    bottom: 310px;
  }
}
@media (max-width: 800px) {
  #equivalence {
    top: 195px;
    left: 5%;
    right: auto;
    width: 310px;
    display: flex;
    align-items: center;
    text-align: left;
  }
  #equivalence-canvas {
    width: 136px;
    height: 114px;
    flex: 0 0 136px;
  }
  .equivalence-heading {
    font-size: 8px;
  }
  .antimatter-value {
    font-size: 19px;
  }
  .antimatter-unit {
    font-size: 12px;
  }
  .matter-value {
    align-items: flex-start;
    flex-direction: column;
    gap: 5px;
    font-size: 9px;
  }
  header {
    padding: 24px 5%;
  }
  .wordmark {
    font-size: 17px;
  }
  .wordmark > svg {
    width: 27px;
  }
  .header-actions {
    gap: 15px;
  }
  .energy {
    left: 5%;
    top: 106px;
  }
  .energy h1 {
    font-size: 30px;
    letter-spacing: -1.3px;
  }
  #candidate-title {
    font-size: 9px;
  }
  .scene-tools {
    right: 4%;
    gap: 16px;
    top: 48%;
  }
  .scene-tools > div {
    gap: 10px;
  }
  .scene-tools button {
    height: 26px;
  }
  .field-key {
    left: 5%;
    top: 42%;
    font-size: 7px;
    gap: 8px;
  }
  .field-key .ramp {
    height: 76px;
  }
  .scale-bar {
    bottom: 278px;
    right: 11%;
  }
  #experience {
    --timeline-inset: 5%;
    --history-height: clamp(128px, 30dvh, 190px);
    --timeline-header: 44px;
    --timeline-controls-space: 48px;
  }
  .timeline summary {
    justify-content: space-between;
    font-size: 12px;
  }
  .timeline-controls {
    opacity: 1;
    bottom: -44px;
  }
  .timeline-controls button {
    min-width: 44px;
    min-height: 44px;
  }
  .timeline-controls input {
    height: 44px;
  }
  .timeline .value-label {
    font-size: 10px;
  }
  .timeline .title-label {
    font-size: 9px;
  }
  footer {
    left: 5%;
    right: 5%;
  }
  #slice-panel {
    right: 11%;
    width: 230px;
    bottom: 285px;
  }
  .density-wrap {
    height: 178px;
  }
}
@media (max-width: 480px) {
  #equivalence {
    top: 184px;
    left: 5%;
    width: 88%;
  }
  #equivalence-canvas {
    width: 44%;
    height: 102px;
    flex-basis: 44%;
  }
  .equivalence-value {
    min-width: 0;
    padding-left: 4px;
  }
  .equivalence-heading {
    font-size: 7px;
    margin-bottom: 6px;
  }
  .antimatter-value {
    font-size: 17px;
  }
  .antimatter-unit {
    font-size: 10px;
  }
  .matter-value {
    font-size: 8px;
    margin-top: 6px;
  }
  .equivalence-formula {
    font-size: 8px;
  }
  header {
    padding: 22px 6%;
  }
  .wordmark {
    font-size: 16px;
    gap: 8px;
  }
  .wordmark > svg {
    width: 26px;
    height: 26px;
  }
  .speed {
    margin-left: 5px;
    font-size: 10px;
  }
  .header-actions {
    gap: 10px;
  }
  .contribute-link {
    flex-direction: column;
    align-items: flex-end;
    justify-content: center;
    gap: 3px;
    font-size: 11px;
  }
  .header-actions .icon-button {
    width: 24px;
  }
  .header-actions .icon-button svg {
    width: 18px;
  }
  .energy {
    left: 6%;
    top: 100px;
  }
  .energy h1 {
    font-size: 25px;
    letter-spacing: -1.2px;
  }
  .unit {
    font-size: 12px;
    margin-left: 7px;
  }
  #candidate-title {
    font-size: 9px;
  }
  .energy-explainer {
    font-size: 10px;
    line-height: 14px;
  }
  .energy-meta {
    margin-top: 12px;
  }
  #energy-change {
    font-size: 10px;
  }
  .scene-tools {
    right: 4%;
    top: 49%;
    gap: 11px;
  }
  .scene-tools > div {
    gap: 9px;
  }
  .scene-tools button {
    width: 26px;
    height: 24px;
  }
  .scene-tools svg {
    width: 18px;
    height: 18px;
  }
  .scene-tools .camera-presets {
    gap: 6px;
  }
  .field-key {
    left: 7%;
    top: 44%;
    font-size: 6px;
    gap: 8px;
  }
  .field-key .ramp {
    height: 60px;
    width: 2px;
  }
  .density-unit {
    font-size: 7px;
  }
  .scale-bar {
    bottom: 270px;
    right: 14%;
    font-size: 7px;
  }
  #experience {
    --timeline-inset: 6%;
    --timeline-bottom: calc(43px + env(safe-area-inset-bottom, 0px));
  }
  .timeline text {
    font-size: 8px;
  }
  .timeline .value-label {
    font-size: 9px;
  }
  .timeline .title-label {
    font-size: 8px;
  }
  .timeline-controls {
    gap: 12px;
  }
  .timeline-controls input {
    width: 80px;
  }
  footer {
    bottom: calc(23px + env(safe-area-inset-bottom, 0px));
    left: 6%;
    right: 6%;
    font-size: 8px;
  }
  footer button {
    font-size: 8px;
  }
  footer > div {
    gap: 14px;
  }
  #slice-panel {
    width: 215px;
    right: 14%;
    bottom: 280px;
    padding: 10px 12px;
  }
  .density-wrap {
    height: 166px;
  }
  .dialog-body dl {
    grid-template-columns: 1fr;
    gap: 3px;
  }
  .dialog-body dt {
    margin-top: 9px;
  }
  .dialog-body {
    padding: 0 18px 20px;
  }
  .dialog-heading {
    padding: 15px 18px;
  }
  #error-message {
    top: 78px;
    max-width: 85%;
    right: 6%;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

@media (max-width: 800px), (max-height: 760px) {
  #experience:has(.timeline[open]) .scene-tools {
    left: var(--timeline-inset);
    right: var(--timeline-inset);
    flex-direction: row;
    justify-content: flex-end;
    gap: 12px;
  }
  #experience:has(.timeline[open]) .scene-tools > div {
    flex-direction: row;
    gap: 6px;
  }
  #experience:has(.timeline[open]) .scale-bar {
    bottom: calc(var(--timeline-clearance) + 54px);
  }
}
@media (max-width: 480px) {
  #experience:has(.timeline[open]) .scene-tools {
    justify-content: space-between;
    gap: 3px;
  }
  #experience:has(.timeline[open]) .scene-tools > div {
    gap: 2px;
  }
  #experience:has(.timeline[open]) .scene-tools button {
    width: 24px;
  }
}

@media (max-width: 800px) and (max-height: 620px) {
  #experience:has(.timeline[open])
    :is(.scene-tools, .scale-bar, .field-key, #slice-panel, #equivalence) {
    visibility: hidden;
  }
}

.detail-link {
  color: #9ed9fc;
  padding: 0;
  border-bottom: 1px solid #668ab6;
}

.equivalence-value {
  text-shadow:
    0 1px 5px #090f21,
    0 0 10px #090f21;
}