:root {
  color-scheme: dark;
  --bg: #0a0b0a;
  --bg-soft: #121412;
  --panel: rgba(20, 23, 21, 0.84);
  --panel-strong: rgba(29, 31, 27, 0.94);
  --text: #f3efe4;
  --muted: #b2b0a6;
  --subtle: #79786f;
  --line: rgba(243, 239, 228, 0.14);
  --accent: #62dfca;
  --accent-2: #e2b15d;
  --accent-3: #8bb7ff;
  --danger: #ff8068;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --radius: 8px;
  --max: 1180px;
  font-family:
    "Avenir Next", "SF Pro Text", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

section[id] {
  scroll-margin-top: 92px;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 12%, rgba(88, 224, 194, 0.16), transparent 30%),
    radial-gradient(circle at 88% 10%, rgba(255, 207, 112, 0.12), transparent 24%),
    linear-gradient(180deg, #0a0b0a 0%, #121714 42%, #070807 100%);
  color: var(--text);
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(237, 247, 243, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237, 247, 243, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.75), transparent 86%);
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
select {
  font: inherit;
}

.mesh-gradient {
  position: fixed;
  inset: auto -18% -18% -18%;
  z-index: -2;
  height: 54vh;
  pointer-events: none;
  background:
    linear-gradient(118deg, transparent 0 32%, rgba(88, 224, 194, 0.16) 32% 33%, transparent 33% 47%, rgba(255, 207, 112, 0.13) 47% 48%, transparent 48% 100%),
    linear-gradient(58deg, transparent 0 28%, rgba(139, 183, 255, 0.14) 28% 29%, transparent 29% 64%, rgba(88, 224, 194, 0.11) 64% 65%, transparent 65% 100%);
  opacity: 0.82;
  transform: skewY(-6deg);
  right: 0;
  left: 0;
  width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px clamp(18px, 4vw, 56px);
  background: rgba(7, 17, 20, 0.72);
  border-bottom: 1px solid rgba(237, 247, 243, 0.08);
  backdrop-filter: blur(18px);
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 26px;
  height: 26px;
  clip-path: polygon(50% 0, 100% 86%, 0 86%);
  background: linear-gradient(150deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 26px rgba(88, 224, 194, 0.42);
}

.nav-links {
  gap: clamp(12px, 2.2vw, 30px);
  color: var(--muted);
  font-size: 0.88rem;
}

.nav-links a {
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.nav-links a:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.section-shell {
  width: min(var(--max), calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: center;
  min-height: min(760px, calc(100svh - 74px));
  padding: clamp(30px, 5vh, 58px) 0 clamp(44px, 7vh, 78px);
}

.hero-copy,
.hero-media {
  min-width: 0;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: clamp(4.2rem, 13vw, 10rem);
  line-height: 0.82;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 5vw, 4.25rem);
  line-height: 0.95;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.08rem;
  line-height: 1.2;
}

.subtitle {
  max-width: 760px;
  margin-bottom: 22px;
  color: #d9e9e3;
  font-size: clamp(1.35rem, 2.4vw, 2.35rem);
  font-weight: 650;
  line-height: 1.06;
  overflow-wrap: break-word;
}

.subtitle span {
  display: inline;
}

.hero-summary,
.section-heading p,
.copy-block p,
.method-card p {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.72;
}

.hero-summary {
  max-width: 680px;
  margin-bottom: 24px;
}

.author-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 760px;
  margin-bottom: 14px;
}

.author-list span {
  padding: 7px 10px;
  color: #dcebe6;
  font-size: 0.82rem;
  border: 1px solid rgba(237, 247, 243, 0.13);
  border-radius: 999px;
  background: rgba(237, 247, 243, 0.055);
}

.affiliations {
  margin-bottom: 26px;
  color: var(--subtle);
  font-size: 0.9rem;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button,
.copy-button,
.mode-button {
  min-height: 42px;
  padding: 0 17px;
  color: var(--text);
  border: 1px solid rgba(237, 247, 243, 0.18);
  border-radius: 999px;
  background: rgba(237, 247, 243, 0.06);
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.button:disabled {
  color: rgba(244, 239, 226, 0.56);
  border-color: rgba(237, 247, 243, 0.12);
  background: rgba(237, 247, 243, 0.035);
  cursor: not-allowed;
}

.button:hover,
.copy-button:hover,
.mode-button:hover {
  transform: translateY(-1px);
  border-color: rgba(88, 224, 194, 0.55);
  background: rgba(88, 224, 194, 0.11);
}

.button:disabled:hover {
  transform: none;
  border-color: rgba(237, 247, 243, 0.12);
  background: rgba(237, 247, 243, 0.035);
}

.button.primary {
  color: #06100f;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 800;
}

.resource-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.resource-button::before {
  content: "";
  position: absolute;
  inset: 1px;
  z-index: -1;
  border-radius: inherit;
  opacity: 0.6;
  transition:
    opacity 180ms ease,
    transform 180ms ease;
}

.resource-button:hover::before {
  opacity: 1;
  transform: scale(1.04);
}

.code-button {
  border-color: rgba(126, 242, 221, 0.36);
}

.code-button::before {
  background:
    linear-gradient(135deg, rgba(126, 242, 221, 0.2), transparent 54%),
    linear-gradient(180deg, rgba(9, 21, 21, 0.78), rgba(6, 10, 12, 0.52));
}

.models-button {
  border-color: rgba(226, 177, 93, 0.42);
}

.models-button::before {
  background:
    linear-gradient(135deg, rgba(226, 177, 93, 0.24), transparent 56%),
    linear-gradient(180deg, rgba(21, 17, 9, 0.82), rgba(8, 12, 11, 0.5));
}

.button.compact {
  min-height: 40px;
  padding-inline: 15px;
  font-size: 0.9rem;
}

.hero-media {
  overflow: hidden;
  border: 1px solid rgba(237, 247, 243, 0.14);
  border-radius: var(--radius);
  background: #020506;
  box-shadow: var(--shadow);
}

.hero-video {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 0;
  object-fit: contain;
  background: #020506;
}

.media-caption {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 16px;
  color: var(--muted);
  font-size: 0.86rem;
  border-top: 1px solid rgba(237, 247, 243, 0.12);
}

.media-caption span:first-child {
  color: var(--text);
  font-weight: 750;
}

.teaser-playground {
  width: min(1440px, calc(100% - 28px));
  margin: 0 auto clamp(64px, 8vw, 112px);
}

.playground-heading {
  width: 100%;
  margin: 0 0 20px;
}

.playground-heading h2 {
  max-width: 960px;
  margin-bottom: 14px;
}

.playground-heading p {
  max-width: 720px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.62;
}

.preview-note {
  display: block;
  margin-top: 4px;
}

.runtime-controls-guide {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, max-content));
  gap: 8px;
  max-width: min(100%, 1360px);
  margin-top: 16px;
  color: rgba(237, 247, 243, 0.82);
  font-size: clamp(0.72rem, 0.82vw, 0.84rem);
  line-height: 1.4;
}

.runtime-controls-guide span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  white-space: nowrap;
  padding: 7px 10px;
  border: 1px solid rgba(237, 247, 243, 0.13);
  border-radius: 6px;
  background: rgba(5, 9, 10, 0.42);
}

.runtime-controls-guide kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 6px;
  border: 1px solid rgba(91, 223, 199, 0.36);
  border-radius: 4px;
  background: rgba(91, 223, 199, 0.12);
  color: var(--text);
  font: 800 0.72rem/1 var(--mono);
}

@media (max-width: 1320px) {
  .runtime-controls-guide {
    grid-template-columns: repeat(2, minmax(0, max-content));
  }
}

.teaser-sim-stage {
  position: relative;
  --fpv-top: 18px;
  --fpv-right: 18px;
  --fpv-width: min(34vw, 450px);
  --fpv-min-width: 270px;
  --fpv-pad-x: 12px;
  --fpv-pad-bottom: 12px;
  --fpv-header: 34px;
  height: clamp(500px, 58vh, 620px);
  overflow: hidden;
  border: 1px solid rgba(237, 247, 243, 0.15);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 18% 78%, rgba(88, 224, 194, 0.18), transparent 28%),
    linear-gradient(180deg, #101411, #040504);
  box-shadow: var(--shadow);
}

#teaserCanvas {
  width: 100%;
  height: 100%;
  outline: none;
}

.sim-status,
.fpv-label,
.fpv-window,
.sim-hud,
.sim-controls {
  position: absolute;
  z-index: 2;
}

.sim-status {
  top: 64px;
  left: 18px;
  max-width: calc(100% - 72px);
  padding: 9px 12px;
  color: #06100f;
  font-size: 0.86rem;
  font-weight: 850;
  border-radius: 999px;
  background: rgba(88, 224, 194, 0.94);
  pointer-events: none;
  white-space: nowrap;
}

.sim-status.is-hidden {
  opacity: 0;
}

.sim-status.is-error {
  color: #180503;
  background: rgba(255, 128, 104, 0.94);
}

.fpv-label {
  top: var(--fpv-top);
  right: var(--fpv-right);
  width: var(--fpv-width);
  min-width: var(--fpv-min-width);
  aspect-ratio: auto;
  height: var(--fpv-header);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 10px var(--fpv-pad-x) var(--fpv-pad-bottom);
  color: #dff4ee;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: 1px solid rgba(237, 247, 243, 0.22);
  border-bottom: 0;
  border-radius: var(--radius) var(--radius) 0 0;
  background:
    linear-gradient(180deg, rgba(2, 5, 6, 0.34), rgba(2, 5, 6, 0) 30%),
    linear-gradient(90deg, rgba(2, 5, 6, 0.32), rgba(2, 5, 6, 0) 22%, rgba(2, 5, 6, 0) 78%, rgba(2, 5, 6, 0.32));
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.34);
  pointer-events: none;
}

.fpv-window {
  top: calc(var(--fpv-top) + var(--fpv-header));
  right: calc(var(--fpv-right) + var(--fpv-pad-x));
  width: calc(var(--fpv-width) - (var(--fpv-pad-x) * 2));
  min-width: calc(var(--fpv-min-width) - (var(--fpv-pad-x) * 2));
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(88, 224, 194, 0.36);
  border-radius: 0 0 4px 4px;
  pointer-events: none;
}

.fpv-label::after {
  content: "REC";
  color: #ff8068;
}

.sim-hud {
  left: 18px;
  bottom: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  pointer-events: none;
}

.sim-hud span {
  padding: 8px 11px;
  color: #dff4ee;
  font-size: 0.82rem;
  font-weight: 800;
  border: 1px solid rgba(237, 247, 243, 0.15);
  border-radius: 999px;
  background: rgba(7, 17, 20, 0.66);
  backdrop-filter: blur(12px);
}

.sim-controls {
  right: 18px;
  bottom: 18px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  align-items: end;
  max-width: min(520px, calc(100% - 36px));
}

.agent-switch {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.sim-render-toggle {
  grid-column: 1 / -1;
  justify-content: flex-end;
}

.scene-select {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  color: var(--subtle);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.scene-select select {
  min-height: 38px;
  max-width: min(260px, 100%);
  padding: 0 36px 0 13px;
  color: var(--text);
  border: 1px solid rgba(237, 247, 243, 0.18);
  border-radius: 999px;
  background:
    linear-gradient(45deg, transparent 50%, #58e0c2 50%) right 17px center / 7px 7px no-repeat,
    linear-gradient(135deg, #58e0c2 50%, transparent 50%) right 12px center / 7px 7px no-repeat,
    rgba(7, 17, 20, 0.72);
  backdrop-filter: blur(12px);
  appearance: none;
  cursor: pointer;
}

.scene-select select:focus-visible {
  outline: 2px solid rgba(88, 224, 194, 0.74);
  outline-offset: 2px;
}

.agent-roster {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  max-width: min(520px, calc(100vw - 36px));
}

.agent-button,
.agent-instance-button,
.drive-pad button {
  min-height: 38px;
  padding: 0 13px;
  color: var(--muted);
  border: 1px solid rgba(237, 247, 243, 0.18);
  border-radius: 999px;
  background: rgba(7, 17, 20, 0.66);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease;
}

.agent-button:hover,
.agent-instance-button:hover,
.drive-pad button:hover {
  color: var(--text);
  border-color: rgba(88, 224, 194, 0.5);
  transform: translateY(-1px);
}

.agent-instance-button {
  min-height: 34px;
  padding-inline: 11px;
  font-size: 0.78rem;
}

.agent-instance-button.is-active {
  color: #06100f;
  border-color: transparent;
  background: var(--accent);
  font-weight: 850;
}

.drive-pad {
  display: grid;
  grid-template-columns: repeat(3, 42px);
  grid-template-rows: repeat(2, 42px);
  gap: 6px;
}

.drive-pad button {
  min-height: 42px;
  padding: 0;
  border-radius: 8px;
  font-size: 0.9rem;
}

.drive-pad button[data-drive="forward"] {
  grid-column: 2;
}

.drive-pad button[data-drive="rotate-left"] {
  grid-column: 1;
}

.drive-pad button[data-drive="rotate-right"] {
  grid-column: 3;
}

.drive-pad button[data-drive="left"] {
  grid-column: 1;
  grid-row: 2;
}

.drive-pad button[data-drive="backward"] {
  grid-column: 2;
  grid-row: 2;
}

.drive-pad button[data-drive="right"] {
  grid-column: 3;
  grid-row: 2;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(260px, 0.66fr) minmax(0, 1fr);
  gap: clamp(28px, 7vw, 96px);
  padding-bottom: clamp(70px, 8vw, 112px);
}

.section-kicker {
  position: sticky;
  top: 105px;
  align-self: start;
}

.copy-block {
  padding-top: 8px;
}

.copy-block p {
  margin-bottom: 20px;
  font-size: clamp(1rem, 1.25vw, 1.14rem);
}

.section-heading {
  max-width: 850px;
  margin-bottom: 34px;
}

.section-heading p {
  max-width: 760px;
}

.wide-figure,
.result-card,
.bib-card,
.mesh-card,
.mesh-frame {
  border: 1px solid rgba(237, 247, 243, 0.13);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.wide-figure {
  overflow: hidden;
  margin: 0 0 22px;
}

.wide-figure img {
  width: 100%;
  background: #f7faf9;
}

figcaption {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.wide-figure figcaption,
.result-card figcaption {
  padding: 14px 16px 16px;
  border-top: 1px solid rgba(237, 247, 243, 0.12);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: clamp(82px, 10vw, 140px);
}

.method-card {
  position: relative;
  overflow: hidden;
  min-height: 270px;
  padding: 24px;
  border: 1px solid rgba(237, 247, 243, 0.12);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(237, 247, 243, 0.065), rgba(237, 247, 243, 0.035));
}

.method-card::after {
  position: absolute;
  right: -42px;
  bottom: -42px;
  width: 120px;
  height: 120px;
  content: "";
  border: 1px solid rgba(88, 224, 194, 0.24);
  transform: rotate(45deg);
}

.card-index {
  display: block;
  margin-bottom: 28px;
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 900;
}

.interactive-section,
.bib-section {
  padding-bottom: clamp(82px, 10vw, 138px);
}

.result-gallery {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-bottom: 22px;
}

.result-card {
  overflow: hidden;
  margin: 0;
}

.result-card img {
  width: 100%;
  max-height: min(58vh, 620px);
  object-fit: contain;
  background: #f7faf9;
}

.protocol-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(86px, 11vw, 140px);
}

.protocol-item {
  padding: 18px;
  border: 1px solid rgba(237, 247, 243, 0.12);
  background: rgba(7, 17, 20, 0.48);
}

.protocol-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent-2);
  font-size: 0.94rem;
}

.protocol-item span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.interactive-section {
  scroll-margin-top: 132px;
  padding: clamp(76px, 7vw, 112px) 0 clamp(76px, 9vw, 122px);
  margin-bottom: clamp(74px, 9vw, 120px);
  background:
    linear-gradient(180deg, rgba(88, 224, 194, 0.08), transparent 26%),
    rgba(237, 247, 243, 0.025);
  border-block: 1px solid rgba(237, 247, 243, 0.1);
}

.interactive-heading {
  margin-bottom: 34px;
}

.viewer-heading {
  margin-bottom: 24px;
}

.segmented {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mode-button {
  min-height: 38px;
  padding-inline: 13px;
  color: var(--muted);
}

.mode-button.is-active {
  color: #06100f;
  border-color: transparent;
  background: var(--accent);
  font-weight: 800;
}

.mesh-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 36px);
  width: min(1440px, calc(100% - 28px));
  margin: 0 auto;
}

.mesh-group {
  display: grid;
  gap: 14px;
}

.mesh-group-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid rgba(237, 247, 243, 0.1);
  padding-bottom: 10px;
}

.mesh-group-heading h3 {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.15rem, 1.8vw, 1.65rem);
  line-height: 1.05;
}

.mesh-group-heading p {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  text-align: right;
}

.mesh-group-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.mesh-card {
  overflow: hidden;
  padding: 16px;
  background: rgba(7, 17, 20, 0.62);
}

.mesh-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 12px;
}

.mesh-card-header h3 {
  margin-bottom: 5px;
  font-size: clamp(1.05rem, 2vw, 1.36rem);
}

.mesh-card-meta {
  display: block;
  color: var(--subtle);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.mesh-frame {
  position: relative;
  width: 100%;
  height: clamp(260px, 24vw, 390px);
  margin: 0 0 12px;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(88, 224, 194, 0.12), rgba(255, 207, 112, 0.07)),
    #020506;
  box-shadow: none;
}

.mesh-canvas {
  width: 100%;
  height: 100%;
  outline: none;
}

.viewer-status,
.viewer-hud {
  position: absolute;
  left: 18px;
  right: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  pointer-events: none;
}

.viewer-status {
  top: 18px;
  right: auto;
  padding: 9px 12px;
  color: #06100f;
  font-size: 0.86rem;
  font-weight: 800;
  border-radius: 999px;
  background: rgba(88, 224, 194, 0.92);
}

.viewer-status.is-error {
  color: #180503;
  background: rgba(255, 128, 104, 0.94);
}

.viewer-status.is-hidden {
  opacity: 0;
}

.viewer-hud {
  bottom: 16px;
  color: rgba(237, 247, 243, 0.72);
  font-size: 0.82rem;
}

.bib-card {
  position: relative;
  overflow: hidden;
}

.bib-card pre {
  margin: 0;
  overflow-x: auto;
  padding: 28px;
}

.bib-card code {
  color: #dff4ee;
  font: 0.9rem/1.6 "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.copy-button {
  position: absolute;
  top: 14px;
  right: 14px;
  min-height: 36px;
  padding-inline: 14px;
  background: rgba(7, 17, 20, 0.82);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 32px clamp(18px, 4vw, 56px);
  color: var(--muted);
  border-top: 1px solid rgba(237, 247, 243, 0.1);
}

.site-footer div {
  display: grid;
  gap: 5px;
}

.site-footer strong {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 700ms ease,
    transform 700ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero,
  .two-column,
  .protocol-strip {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .section-kicker {
    position: static;
  }

  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mesh-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .section-shell {
    width: min(100% - 24px, var(--max));
  }

  h1 {
    font-size: clamp(3.1rem, 16vw, 5.25rem);
    line-height: 0.88;
  }

  h2 {
    font-size: clamp(2rem, 12vw, 3rem);
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 34px;
  }

  .subtitle {
    font-size: clamp(1.12rem, 5.1vw, 1.48rem);
    line-height: 1.12;
  }

  .subtitle span {
    display: block;
  }

  .hero-summary {
    margin-bottom: 20px;
    line-height: 1.58;
  }

  .hero .button-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero .button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 0;
    width: 100%;
    padding-inline: 10px;
    font-size: 0.93rem;
    text-align: center;
    white-space: nowrap;
  }

  .hero .button.primary {
    grid-column: 1 / -1;
  }

  .media-caption,
  .site-footer,
  .viewer-hud {
    flex-direction: column;
    align-items: flex-start;
  }

  .method-grid,
  .result-gallery {
    grid-template-columns: 1fr;
  }

  .mesh-frame {
    height: 420px;
  }

  .teaser-sim-stage {
    height: 620px;
  }

  .fpv-label {
    --fpv-top: 14px;
    --fpv-right: 14px;
    --fpv-width: min(48vw, 240px);
    --fpv-min-width: 170px;
  }

  .sim-hud {
    top: 14px;
    bottom: auto;
    left: 14px;
    right: calc(var(--fpv-right) + var(--fpv-width) + 14px);
  }

  .sim-status {
    top: 64px;
    left: 14px;
    max-width: calc(100% - 28px);
  }

  .sim-controls {
    left: 14px;
    right: 14px;
    bottom: 14px;
    grid-template-columns: 1fr;
    justify-items: end;
  }

  .agent-switch {
    justify-content: flex-start;
  }

  .sim-render-toggle {
    justify-content: flex-start;
  }

  .scene-select {
    justify-content: flex-start;
  }

  .agent-roster {
    justify-content: flex-start;
  }

  .bib-card pre {
    padding: 64px 18px 22px;
  }
}

@media (max-width: 520px) {
  .hero {
    padding-bottom: 22px;
  }

  h1 {
    margin-bottom: 6px;
  }

  .subtitle {
    margin-bottom: 18px;
  }

  .author-list span {
    font-size: 0.78rem;
  }

  .affiliations {
    margin-bottom: 20px;
    font-size: 0.84rem;
    line-height: 1.35;
  }

  .hero .button-row {
    gap: 8px;
  }

  .teaser-sim-stage {
    height: 680px;
  }

  .fpv-label {
    --fpv-width: calc(100% - 28px);
    --fpv-min-width: 0px;
  }

  .sim-hud {
    top: clamp(220px, 68vw, 270px);
    right: 14px;
  }

  .sim-status {
    top: calc(clamp(220px, 68vw, 270px) + 46px);
  }

  .sim-controls {
    justify-items: stretch;
  }

  .agent-switch {
    justify-content: stretch;
  }

  .sim-render-toggle {
    justify-content: stretch;
  }

  .scene-select {
    align-items: stretch;
    justify-content: stretch;
  }

  .scene-select select {
    flex: 1;
    max-width: none;
  }

  .agent-button,
  .agent-instance-button {
    flex: 1 1 90px;
  }

  .agent-roster {
    justify-content: stretch;
    max-width: none;
  }

  .drive-pad {
    justify-self: end;
  }
}

/* Frontend-design visual refresh: technical atlas, not a generic neon dashboard. */
:root {
  --bg: #0a0b0a;
  --bg-soft: #121412;
  --panel: rgba(20, 23, 21, 0.84);
  --panel-strong: rgba(29, 31, 27, 0.94);
  --text: #f3efe4;
  --muted: #b2b0a6;
  --subtle: #79786f;
  --line: rgba(243, 239, 228, 0.14);
  --accent: #62dfca;
  --accent-2: #e2b15d;
  --accent-3: #8caeff;
  --danger: #ff7a62;
  --shadow: 0 22px 70px rgba(0, 0, 0, 0.46);
  --radius: 6px;
  --max: 1200px;
  font-family:
    "Avenir Next", "SF Pro Text", "Segoe UI", ui-sans-serif, system-ui, sans-serif;
}

body {
  background:
    linear-gradient(115deg, rgba(226, 177, 93, 0.08) 0 12%, transparent 12% 48%, rgba(98, 223, 202, 0.08) 48% 49%, transparent 49% 100%),
    linear-gradient(180deg, #0a0b0a 0%, #121714 38%, #070807 100%);
}

body::before {
  background-image:
    linear-gradient(rgba(243, 239, 228, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243, 239, 228, 0.03) 1px, transparent 1px),
    repeating-linear-gradient(33deg, transparent 0 78px, rgba(98, 223, 202, 0.035) 78px 79px, transparent 79px 156px);
  background-size: 64px 64px, 64px 64px, auto;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.78), transparent 88%);
}

body::after {
  display: none;
}

.mesh-gradient {
  inset: auto -12% -24% -12%;
  right: 0;
  left: 0;
  width: 100%;
  height: 52vh;
  background:
    repeating-linear-gradient(118deg, transparent 0 120px, rgba(226, 177, 93, 0.14) 120px 122px, transparent 122px 240px),
    repeating-linear-gradient(58deg, transparent 0 130px, rgba(98, 223, 202, 0.13) 130px 132px, transparent 132px 260px);
  opacity: 0.66;
  transform: skewY(-8deg);
}

.site-header {
  padding-block: 13px;
  background: rgba(10, 11, 10, 0.82);
  border-bottom-color: rgba(243, 239, 228, 0.12);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
}

.brand {
  font-weight: 900;
}

.brand-mark {
  width: 28px;
  height: 28px;
  background: linear-gradient(150deg, var(--accent) 0 44%, var(--accent-2) 44% 100%);
  box-shadow: 0 0 0 1px rgba(243, 239, 228, 0.2), 0 0 32px rgba(98, 223, 202, 0.36);
}

.nav-links {
  gap: 8px;
  font-size: 0.84rem;
}

.nav-links a {
  padding: 8px 11px;
  border: 1px solid transparent;
  border-radius: 999px;
}

.nav-links a:hover {
  border-color: rgba(243, 239, 228, 0.14);
  background: rgba(243, 239, 228, 0.06);
}

.section-shell {
  width: min(var(--max), calc(100% - 44px));
}

.hero {
  position: relative;
  grid-template-columns: minmax(0, 0.88fr) minmax(460px, 1.12fr);
  gap: clamp(30px, 5vw, 76px);
  min-height: min(790px, calc(100svh - 70px));
  padding-top: clamp(46px, 7vh, 78px);
}

.hero::before {
  position: absolute;
  inset: 8% 0 8% auto;
  z-index: -1;
  width: min(58vw, 700px);
  content: "";
  background:
    linear-gradient(116deg, transparent 0 34%, rgba(98, 223, 202, 0.18) 34% 35%, transparent 35% 52%, rgba(226, 177, 93, 0.18) 52% 53%, transparent 53% 100%),
    repeating-linear-gradient(0deg, rgba(243, 239, 228, 0.04) 0 1px, transparent 1px 34px);
  border: 1px solid rgba(243, 239, 228, 0.08);
  transform: skewX(-10deg);
}

.hero-copy,
.hero-media {
  position: relative;
  z-index: 1;
}

h1,
h2 {
  font-family: "Iowan Old Style", "Georgia", "Times New Roman", serif;
  font-weight: 700;
  color: var(--text);
}

h1 {
  max-width: 680px;
  margin-bottom: 14px;
  font-size: clamp(5rem, 12.4vw, 11rem);
  line-height: 0.84;
}

h2 {
  max-width: 980px;
  font-size: clamp(2.25rem, 4.8vw, 4.55rem);
  line-height: 0.98;
}

h3 {
  color: #fff8ea;
  font-size: 1.12rem;
}

.subtitle {
  max-width: 720px;
  color: #e8dfca;
  font-size: clamp(1.22rem, 2.05vw, 2rem);
  font-weight: 750;
  line-height: 1.15;
}

.hero-summary,
.section-heading p,
.copy-block p,
.method-card p,
.playground-heading p {
  color: var(--muted);
}

.author-list {
  gap: 7px;
}

.author-list span {
  border-color: rgba(243, 239, 228, 0.14);
  background: rgba(243, 239, 228, 0.045);
}

.button,
.copy-button,
.mode-button,
.agent-button,
.agent-instance-button,
.drive-pad button {
  border-color: rgba(243, 239, 228, 0.18);
  background: rgba(14, 15, 13, 0.72);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.button:hover,
.copy-button:hover,
.mode-button:hover,
.agent-button:hover,
.agent-instance-button:hover,
.drive-pad button:hover {
  border-color: rgba(98, 223, 202, 0.58);
  background: rgba(98, 223, 202, 0.1);
}

.button.primary {
  background: linear-gradient(135deg, #7ef2dd, #e2b15d 78%);
  box-shadow: 0 16px 34px rgba(98, 223, 202, 0.18);
}

.hero-media,
.wide-figure,
.result-card,
.bib-card,
.mesh-card,
.mesh-frame,
.teaser-sim-stage,
.method-card,
.protocol-item {
  border-color: rgba(243, 239, 228, 0.16);
  border-radius: var(--radius);
}

.hero-media {
  position: relative;
  background:
    linear-gradient(135deg, rgba(98, 223, 202, 0.09), transparent 42%),
    #050605;
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.54);
}

.hero-media::before {
  position: absolute;
  inset: 10px;
  z-index: 1;
  pointer-events: none;
  content: "";
  border: 1px solid rgba(226, 177, 93, 0.34);
}

.hero-video {
  position: relative;
  z-index: 0;
  background: #050605;
}

.media-caption {
  position: relative;
  z-index: 2;
  background: rgba(10, 11, 10, 0.86);
}

.two-column {
  grid-template-columns: minmax(280px, 0.62fr) minmax(0, 1fr);
  padding-top: clamp(14px, 2vw, 24px);
}

.section-kicker h2,
.section-heading h2,
.playground-heading h2 {
  position: relative;
}

.section-kicker h2::after,
.section-heading h2::after,
.playground-heading h2::after {
  display: block;
  width: 72px;
  height: 2px;
  margin-top: 18px;
  content: "";
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
}

.copy-block {
  padding: 24px;
  border-left: 1px solid rgba(226, 177, 93, 0.28);
  background: linear-gradient(90deg, rgba(226, 177, 93, 0.055), transparent 62%);
}

.interactive-section {
  background:
    linear-gradient(118deg, rgba(226, 177, 93, 0.08) 0 18%, transparent 18% 48%, rgba(98, 223, 202, 0.08) 48% 49%, transparent 49%),
    rgba(243, 239, 228, 0.026);
  border-block-color: rgba(243, 239, 228, 0.14);
}

.teaser-playground {
  width: min(1460px, calc(100% - 32px));
}

.playground-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.56fr);
  gap: clamp(18px, 4vw, 54px);
  align-items: end;
}

.playground-heading h2,
.playground-heading p {
  max-width: none;
}

.teaser-sim-stage {
  height: clamp(540px, 60vh, 680px);
  border-color: rgba(243, 239, 228, 0.18);
  background:
    linear-gradient(135deg, rgba(226, 177, 93, 0.08), transparent 28%),
    linear-gradient(180deg, #101411, #040504);
}

.fpv-label,
.sim-hud span,
.scene-select select,
.sim-status,
.viewer-status {
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.28);
}

.method-grid {
  gap: 16px;
}

.method-card {
  min-height: 290px;
  background:
    linear-gradient(180deg, rgba(243, 239, 228, 0.075), rgba(243, 239, 228, 0.028)),
    linear-gradient(135deg, rgba(98, 223, 202, 0.06), transparent 46%);
}

.method-card::after {
  border-color: rgba(226, 177, 93, 0.3);
}

.card-index {
  color: var(--accent-2);
}

.result-gallery {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.result-card {
  background: rgba(20, 23, 21, 0.86);
}

.result-card img {
  height: clamp(300px, 33vw, 470px);
  max-height: none;
  padding: 10px;
  object-fit: contain;
  background: #f4f1e9;
}

.protocol-strip {
  gap: 14px;
}

.protocol-item {
  background:
    linear-gradient(135deg, rgba(226, 177, 93, 0.07), transparent 46%),
    rgba(14, 15, 13, 0.68);
}

.mesh-grid {
  gap: 20px;
}

.mesh-card {
  padding: 14px;
  background:
    linear-gradient(180deg, rgba(243, 239, 228, 0.055), rgba(243, 239, 228, 0.025)),
    rgba(8, 9, 8, 0.78);
}

.mesh-frame {
  background:
    linear-gradient(135deg, rgba(98, 223, 202, 0.12), rgba(226, 177, 93, 0.08)),
    #050605;
}

.bib-card {
  background:
    linear-gradient(135deg, rgba(98, 223, 202, 0.055), transparent 42%),
    rgba(14, 15, 13, 0.78);
}

.bib-card code {
  color: #ede6d6;
}

.reveal {
  transform: translateY(18px);
  transition:
    opacity 620ms ease,
    transform 620ms ease;
}

@media (max-width: 980px) {
  .section-shell {
    width: min(100% - 32px, var(--max));
  }

  .hero,
  .two-column,
  .playground-heading,
  .result-gallery {
    grid-template-columns: 1fr;
  }

  .hero::before {
    inset: 12% 0 auto;
    width: 100%;
    height: 52%;
    transform: none;
  }

  .copy-block {
    padding-inline: 18px;
  }
}

@media (max-width: 720px) {
  .site-header {
    gap: 13px;
  }

  .nav-links {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .nav-links a {
    padding: 7px 10px;
  }

  .section-shell {
    width: min(100% - 24px, var(--max));
  }

  h1 {
    font-size: clamp(3.3rem, 17vw, 5.5rem);
  }

  h2 {
    font-size: clamp(2.1rem, 11vw, 3.05rem);
  }

  .result-card img {
    height: auto;
    min-height: 220px;
  }
}

@media (max-width: 520px) {
  .site-header {
    padding-block: 10px;
  }

  .brand-mark {
    width: 22px;
    height: 22px;
  }

  .nav-links {
    gap: 5px;
  }

  .nav-links a {
    padding: 5px 8px;
    font-size: 0.78rem;
  }

  .hero {
    gap: 16px;
    padding-top: 18px;
  }

  .hero .button-row {
    grid-template-columns: 1fr;
  }

  h1 {
    margin-bottom: 4px;
    font-size: clamp(3rem, 15vw, 4.8rem);
  }

  .subtitle {
    margin-bottom: 12px;
  }

  .hero-summary {
    margin-bottom: 14px;
    font-size: 0.95rem;
    line-height: 1.48;
  }

  .author-list {
    margin-bottom: 10px;
  }

  .affiliations {
    margin-bottom: 14px;
  }

  .hero .button.primary {
    grid-column: auto;
  }

  .hero .button {
    min-height: 38px;
  }

  .author-list span {
    padding-inline: 9px;
  }
}

/* Screenshot review corrections: single-column hero, readable section headers, and looser runtime controls. */
.hero {
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
  width: min(1180px, calc(100% - 44px));
  min-height: auto;
  padding: clamp(48px, 7vh, 82px) 0 clamp(58px, 8vh, 92px);
  text-align: center;
}

.hero::before {
  inset: 7% 5% 20%;
  width: auto;
  transform: skewX(-8deg);
}

.hero-copy {
  max-width: 980px;
  margin: 0 auto;
}

h1 {
  max-width: none;
  margin: 0 auto 12px;
  font-size: clamp(5.5rem, 15vw, 13rem);
  line-height: 0.78;
}

.subtitle {
  max-width: 900px;
  margin: 0 auto 20px;
  font-size: clamp(1.4rem, 2.35vw, 2.35rem);
  line-height: 1.12;
}

.hero-summary {
  max-width: 800px;
  margin: 0 auto 22px;
}

.author-list {
  display: block;
  max-width: 900px;
  margin: 0 auto 10px;
  color: #dcebe6;
  font-size: 0.94rem;
  line-height: 1.65;
}

.author-list span {
  display: inline;
  padding: 0;
  color: inherit;
  font-size: inherit;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.author-list span:not(:last-child)::after {
  margin: 0 7px;
  color: rgba(226, 177, 93, 0.82);
  content: "·";
}

.affiliations {
  max-width: 900px;
  margin: 0 auto 24px;
}

.hero .button-row {
  justify-content: center;
}

.hero-media {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.hero-video {
  aspect-ratio: 16 / 8.4;
}

.playground-heading {
  display: block;
  max-width: 980px;
  margin: 0 auto 22px;
}

.playground-heading h2 {
  max-width: 940px;
  margin-bottom: 14px;
  font-size: clamp(2.5rem, 5.6vw, 5.35rem);
}

.playground-heading p {
  max-width: 740px;
  margin-bottom: 0;
}

.teaser-sim-stage {
  --fpv-top: 18px;
  --fpv-right: 18px;
  --fpv-width: clamp(300px, 30vw, 430px);
  --fpv-min-width: 0px;
  --fpv-pad-x: 0px;
  --fpv-header: 34px;
  height: clamp(570px, 64vh, 720px);
}

.fpv-label {
  right: var(--fpv-right);
  width: var(--fpv-width);
  min-width: 0;
  align-items: center;
  padding: 0 13px;
  background: rgba(4, 12, 13, 0.72);
  border-color: rgba(237, 247, 243, 0.28);
}

.fpv-window {
  right: var(--fpv-right);
  width: var(--fpv-width);
  min-width: 0;
  overflow: hidden;
  background: #071114;
  border-top: 0;
  box-shadow: inset 0 0 0 1px rgba(88, 224, 194, 0.1);
}

#fpvCanvas {
  width: 100%;
  height: 100%;
}

.sim-hud {
  top: 18px;
  bottom: auto;
  max-width: calc(100% - var(--fpv-width) - var(--fpv-right) - 60px);
}

.sim-controls {
  right: 18px;
  bottom: 18px;
  left: 18px;
  grid-template-columns: minmax(260px, 1fr) minmax(235px, auto) auto;
  grid-template-rows: repeat(3, auto);
  gap: 8px 12px;
  align-items: end;
  justify-items: start;
  max-width: none;
  pointer-events: none;
}

.sim-controls > * {
  pointer-events: auto;
}

.agent-switch {
  grid-column: 1;
  grid-row: 1;
  justify-content: flex-start;
  max-width: 540px;
}

.agent-roster {
  grid-column: 1;
  grid-row: 2;
  justify-content: flex-start;
  max-width: 540px;
}

.scene-select {
  grid-column: 2;
  grid-row: 1;
  justify-content: flex-end;
  justify-self: end;
}

.sim-render-toggle {
  grid-column: 2;
  grid-row: 2;
  justify-content: flex-end;
  justify-self: end;
}

#dropBeacon {
  grid-column: 2;
  grid-row: 3;
  justify-self: end;
  min-width: 210px;
}

.drive-pad {
  grid-column: 3;
  grid-row: 1 / span 3;
  justify-self: end;
}

.result-gallery {
  grid-template-columns: 1fr;
}

.result-card img {
  height: auto;
  max-height: none;
  padding: clamp(10px, 1.6vw, 18px);
}

@media (max-width: 1100px) {
  .sim-controls {
    grid-template-columns: minmax(220px, 1fr) auto;
  }

  .scene-select {
    grid-column: 2;
    grid-row: 1;
  }

  .sim-render-toggle {
    grid-column: 2;
    grid-row: 2;
  }

  #dropBeacon {
    grid-column: 1;
    grid-row: 3;
    justify-self: start;
  }

  .drive-pad {
    grid-column: 2;
    grid-row: 3;
  }
}

@media (max-width: 720px) {
  .hero {
    width: min(100% - 24px, var(--max));
    padding-top: 34px;
    text-align: left;
  }

  h1 {
    margin-inline: 0;
    font-size: clamp(4.1rem, 18vw, 6.6rem);
  }

  .subtitle,
  .hero-summary,
  .author-list,
  .affiliations {
    margin-inline: 0;
  }

  .hero .button-row {
    justify-content: stretch;
  }

  .playground-heading {
    margin-inline: 0;
  }

  .teaser-sim-stage {
    --fpv-top: 14px;
    --fpv-right: 14px;
    --fpv-width: min(50vw, 255px);
    height: 660px;
  }

  .sim-hud {
    top: 14px;
    left: 14px;
    right: calc(var(--fpv-right) + var(--fpv-width) + 14px);
    max-width: none;
  }

  .sim-status {
    top: 64px;
    left: 14px;
    max-width: calc(100% - 28px);
  }

  .sim-controls {
    right: 14px;
    bottom: 14px;
    left: 14px;
    grid-template-columns: 1fr auto;
    justify-items: stretch;
  }

  .agent-switch {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .agent-roster {
    grid-column: 1;
    grid-row: 2;
  }

  .scene-select {
    grid-column: 1 / -1;
    grid-row: 3;
    justify-self: stretch;
  }

  .scene-select select {
    max-width: none;
  }

  .sim-render-toggle {
    grid-column: 1;
    grid-row: 4;
    justify-self: start;
  }

  #dropBeacon {
    grid-column: 1;
    grid-row: 5;
    justify-self: stretch;
    min-width: 0;
  }

  .drive-pad {
    grid-column: 2;
    grid-row: 4 / span 2;
  }
}

@media (max-width: 520px) {
  .hero {
    gap: 18px;
    padding-top: 26px;
  }

  h1 {
    font-size: clamp(3.5rem, 17vw, 5.3rem);
  }

  .author-list {
    font-size: 0.88rem;
  }

  .teaser-sim-stage {
    --fpv-width: calc(100% - 28px);
    height: 760px;
  }

  .sim-hud {
    top: clamp(220px, 68vw, 282px);
    right: 14px;
  }

  .sim-status {
    top: calc(clamp(220px, 68vw, 282px) + 46px);
  }

  .sim-controls {
    grid-template-columns: 1fr;
  }

  .agent-roster,
  .sim-render-toggle,
  .drive-pad {
    grid-column: 1;
  }

  .drive-pad {
    grid-row: auto;
    justify-self: start;
  }
}

/* Frontend-design refresh: refined research instrument layout. */
:root {
  --bg: #080a09;
  --bg-soft: #10130f;
  --panel: rgba(13, 17, 15, 0.82);
  --panel-strong: rgba(19, 22, 19, 0.94);
  --text: #f5efe2;
  --muted: #b9b5a8;
  --subtle: #817d70;
  --line: rgba(245, 239, 226, 0.14);
  --accent: #5ce2c7;
  --accent-2: #dcae5a;
  --accent-3: #8fb6ff;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.44);
  --max: 1220px;
}

body {
  background:
    linear-gradient(112deg, rgba(220, 174, 90, 0.11) 0 18%, transparent 18.1% 54%, rgba(92, 226, 199, 0.09) 54.1% 55%, transparent 55.1% 100%),
    radial-gradient(circle at 78% 18%, rgba(143, 182, 255, 0.08), transparent 28%),
    linear-gradient(180deg, #080a09 0%, #11150f 42%, #070807 100%);
}

body::before {
  background-image:
    linear-gradient(rgba(245, 239, 226, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(245, 239, 226, 0.024) 1px, transparent 1px),
    repeating-linear-gradient(30deg, transparent 0 118px, rgba(92, 226, 199, 0.05) 118px 119px, transparent 119px 236px);
  background-size: 68px 68px, 68px 68px, auto;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.86), transparent 92%);
}

.site-header {
  padding: 12px clamp(18px, 4vw, 58px);
  background: rgba(5, 7, 6, 0.84);
  border-bottom-color: rgba(245, 239, 226, 0.13);
}

.brand {
  font-size: 0.95rem;
}

.brand-mark {
  width: 24px;
  height: 24px;
}

.nav-links a {
  border-radius: 6px;
}

.hero {
  width: min(1120px, calc(100% - 48px));
  gap: clamp(22px, 3.8vw, 38px);
  padding: clamp(34px, 5vh, 56px) 0 clamp(46px, 6vh, 72px);
}

.hero::before {
  inset: 10% 9% 24%;
  opacity: 0.72;
  border-color: rgba(245, 239, 226, 0.06);
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(5.4rem, 11.4vw, 9.8rem);
  line-height: 0.82;
}

.subtitle {
  display: block;
  max-width: 680px;
  margin-bottom: 18px;
  color: #efe7d6;
  font-size: clamp(1.08rem, 1.55vw, 1.42rem);
  font-weight: 800;
  line-height: 1.24;
}

.subtitle span {
  display: inline;
}

.author-list {
  max-width: 850px;
  margin-bottom: 5px;
  font-size: 0.84rem;
  line-height: 1.55;
}

.affiliations {
  margin-bottom: 18px;
  font-size: 0.84rem;
}

.button-row {
  gap: 8px;
}

.button,
.copy-button,
.mode-button,
.agent-button,
.agent-instance-button,
.drive-pad button {
  min-height: 38px;
  border-radius: 6px;
}

.button.primary {
  color: #07100d;
}

.hero-media {
  width: min(1040px, 100%);
  margin-top: 8px;
  border-radius: 6px;
}

.hero-media::before {
  inset: 8px;
  border-color: rgba(220, 174, 90, 0.28);
}

.hero-video {
  aspect-ratio: 16 / 8.9;
}

.media-caption {
  padding: 11px 14px;
  font-size: 0.8rem;
}

.two-column {
  gap: clamp(24px, 5vw, 72px);
  padding-bottom: clamp(56px, 7vw, 90px);
}

.copy-block {
  padding: 20px 22px;
}

h2 {
  font-size: clamp(2.15rem, 4.2vw, 4.2rem);
}

.section-heading {
  max-width: 820px;
  margin-bottom: 26px;
}

.section-heading p,
.playground-heading p,
.copy-block p {
  font-size: 0.98rem;
  line-height: 1.64;
}

.interactive-section {
  padding: clamp(58px, 6vw, 86px) 0 clamp(64px, 8vw, 100px);
  margin-bottom: clamp(56px, 7vw, 92px);
  background:
    linear-gradient(115deg, rgba(220, 174, 90, 0.075) 0 16%, transparent 16.1% 56%, rgba(92, 226, 199, 0.075) 56.1% 57%, transparent 57.1%),
    rgba(245, 239, 226, 0.02);
}

.teaser-playground {
  width: min(1480px, calc(100% - 32px));
  margin-bottom: clamp(46px, 6vw, 78px);
}

.playground-heading {
  max-width: 880px;
  margin-bottom: 18px;
}

.playground-heading h2 {
  margin-bottom: 10px;
  font-size: clamp(2.4rem, 4.4vw, 4.6rem);
  line-height: 0.96;
}

.teaser-sim-stage {
  height: clamp(560px, 62vh, 700px);
  border-radius: 6px;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
}

.sim-status,
.sim-hud span,
.scene-select select,
.viewer-status {
  border-radius: 6px;
}

.fpv-label {
  border-radius: 6px 6px 0 0;
}

.fpv-window {
  border-radius: 0 0 6px 6px;
}

.mesh-grid {
  grid-template-columns: 1fr;
  gap: clamp(22px, 3vw, 34px);
  width: min(1480px, calc(100% - 32px));
  margin-inline: auto;
}

.mesh-card {
  border-radius: 6px;
}

.mesh-card-header {
  padding-bottom: 10px;
}

.mesh-frame {
  border-radius: 6px;
  height: clamp(260px, 24vw, 390px);
}

.method-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: clamp(62px, 8vw, 108px);
}

.method-card {
  min-height: 236px;
  padding: 20px;
  border-radius: 6px;
}

.card-index {
  margin-bottom: 20px;
}

.wide-figure,
.result-card,
.bib-card {
  border-radius: 6px;
}

.result-gallery {
  width: min(1040px, 100%);
  margin-inline: auto;
}

.result-card img {
  padding: clamp(14px, 2vw, 24px);
  background: #f1ede4;
}

.protocol-strip {
  display: none;
}

.bib-card pre {
  font-size: clamp(0.78rem, 1.2vw, 0.92rem);
}

@media (max-width: 980px) {
  .method-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .mesh-grid {
    grid-template-columns: 1fr;
  }

  .mesh-group-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    padding-block: 10px;
  }

  .hero {
    width: min(100% - 24px, var(--max));
    gap: 16px;
    padding-top: 28px;
    padding-bottom: 36px;
  }

  h1 {
    font-size: clamp(4rem, 17vw, 6.1rem);
  }

  .subtitle {
    margin-bottom: 12px;
    font-size: clamp(1.05rem, 4.6vw, 1.42rem);
  }

  .subtitle span {
    display: block;
  }

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

  .affiliations {
    font-size: 0.78rem;
  }

  .hero .button-row {
    display: flex;
  }

  .hero .button {
    width: auto;
    padding-inline: 13px;
  }

  .media-caption {
    flex-direction: row;
  }

  .playground-heading h2 {
    font-size: clamp(2.2rem, 12vw, 3.2rem);
  }

  .method-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .hero {
    padding-top: 20px;
  }

  h1 {
    font-size: clamp(3.5rem, 17vw, 5.2rem);
  }

  .hero .button-row {
    gap: 8px;
  }
}

/* Final layout pass: title-only first viewport, video second viewport, solid mesh UI. */
.hero {
  display: flex;
  width: min(1480px, calc(100% - 48px));
  min-height: calc(100svh - 74px);
  align-items: flex-start;
  justify-content: center;
  padding: clamp(92px, 12vh, 140px) 0 clamp(58px, 8vh, 92px);
  text-align: center;
}

.hero-copy {
  width: 100%;
  max-width: 1460px;
  margin-inline: auto;
}

.hero h1 {
  margin: 0 auto 24px;
  color: #f8f1e5;
  font-size: clamp(8.2rem, 20vw, 17.2rem);
  line-height: 0.72;
  letter-spacing: 0;
  text-wrap: balance;
}

.hero .hero-copy.is-visible {
  transform: translateY(clamp(-20px, -2vh, -10px));
}

.subtitle {
  max-width: none;
  margin: 0 auto 28px;
  color: #f1e8d7;
  font-size: clamp(1.45rem, 2.55vw, 2.7rem);
  line-height: 1.05;
  text-align: center;
}

.subtitle span {
  display: inline;
}

.author-list {
  max-width: none;
  justify-content: center;
  margin: 0 auto 10px;
  color: #edf6f2;
  font-size: clamp(0.92rem, 1.35vw, 1.34rem);
  line-height: 1.45;
}

.affiliations {
  max-width: none;
  margin: 0 auto 30px;
  color: rgba(244, 239, 226, 0.58);
  font-size: clamp(0.92rem, 1.25vw, 1.2rem);
  line-height: 1.4;
  text-align: center;
}

.hero .button-row {
  justify-content: center;
  gap: 12px;
}

.hero .button {
  min-width: 150px;
  min-height: 54px;
  padding: 0 30px;
  border-radius: 8px;
  font-size: clamp(1.02rem, 1.4vw, 1.35rem);
}

.hero-video-section {
  padding: clamp(56px, 8vh, 92px) 0 clamp(66px, 9vw, 118px);
  scroll-margin-top: 86px;
}

.hero-video-section .hero-media {
  width: min(1120px, 100%);
  margin: 0 auto;
}

.hero-video-section .hero-video {
  aspect-ratio: 16 / 8.8;
}

.sim-render-toggle {
  display: none;
}

.sim-controls {
  grid-template-columns: minmax(260px, 1fr) minmax(235px, auto) auto;
  grid-template-rows: repeat(2, auto);
  gap: 10px 12px;
}

.agent-switch {
  grid-row: 1;
}

.agent-roster {
  grid-row: 2;
}

.scene-select {
  grid-row: 1;
}

#dropBeacon {
  grid-row: 2;
}

.drive-pad {
  grid-row: 1 / span 2;
}

@media (max-width: 1100px) {
  .sim-controls {
    grid-template-columns: minmax(220px, 1fr) auto;
    grid-template-rows: repeat(3, auto);
  }

  .scene-select {
    grid-column: 2;
    grid-row: 1;
  }

  #dropBeacon {
    grid-column: 1;
    grid-row: 3;
    justify-self: start;
  }

  .drive-pad {
    grid-column: 2;
    grid-row: 2 / span 2;
  }
}

@media (max-width: 720px) {
  .hero {
    width: min(100% - 24px, var(--max));
    min-height: calc(100svh - 62px);
    padding: 52px 0 44px;
    text-align: center;
  }

  .hero h1 {
    font-size: clamp(4.8rem, 24vw, 7.4rem);
    line-height: 0.78;
  }

  .subtitle {
    margin-bottom: 22px;
    font-size: clamp(1.05rem, 5.2vw, 1.65rem);
    line-height: 1.12;
  }

  .subtitle span {
    display: block;
  }

  .author-list {
    font-size: clamp(0.82rem, 3.5vw, 0.98rem);
    line-height: 1.55;
  }

  .affiliations {
    margin-bottom: 22px;
    font-size: clamp(0.78rem, 3.3vw, 0.92rem);
  }

  .hero .button-row {
    justify-content: center;
  }

  .hero .button {
    width: auto;
    min-width: 116px;
    min-height: 44px;
    padding-inline: 18px;
    font-size: 1rem;
  }

  .hero-video-section {
    padding-top: 38px;
  }

  .sim-controls {
    grid-template-columns: 1fr auto;
    grid-template-rows: repeat(4, auto);
  }

  .agent-switch {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .agent-roster {
    grid-column: 1;
    grid-row: 2;
  }

  .scene-select {
    grid-column: 1 / -1;
    grid-row: 3;
    justify-self: stretch;
  }

  #dropBeacon {
    grid-column: 1;
    grid-row: 4;
    justify-self: stretch;
    min-width: 0;
  }

  .drive-pad {
    grid-column: 2;
    grid-row: 4;
  }
}

@media (max-width: 520px) {
  .hero {
    min-height: calc(100svh - 58px);
    padding-top: 28px;
  }

  .hero h1 {
    font-size: clamp(4rem, 23vw, 5.9rem);
  }

  .hero .button-row {
    flex-wrap: wrap;
  }

  .sim-controls {
    grid-template-columns: 1fr;
  }

  .agent-roster,
  #dropBeacon,
  .drive-pad {
    grid-column: 1;
  }

  .drive-pad {
    grid-row: auto;
    justify-self: start;
  }
}

/* Final spacing correction: centered title hero, left-aligned section headings. */
.hero {
  width: min(1480px, calc(100% - 48px));
  min-height: calc(100svh - 74px);
  align-items: center;
  justify-content: center;
  padding: clamp(38px, 5vh, 66px) 0 clamp(34px, 5vh, 62px);
}

.hero .hero-copy {
  transform: none;
}

.hero .hero-copy.is-visible {
  transform: none;
}

.hero h1 {
  margin-bottom: clamp(52px, 6.4vh, 78px);
  font-size: clamp(6.5rem, 16.8vw, 14.6rem);
  line-height: 0.9;
}

.subtitle {
  margin-bottom: clamp(26px, 3.6vh, 42px);
  font-size: clamp(1.24rem, 2.12vw, 2.2rem);
  line-height: 1.12;
}

.author-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
  width: min(1240px, 100%);
  max-width: none;
  margin: 0 auto clamp(12px, 1.8vh, 18px);
  color: #eaf5f0;
  font-size: clamp(0.94rem, 1.3vw, 1.18rem);
  line-height: 1.65;
}

.author-list a,
.author-list .author-entry {
  display: inline;
  padding: 0;
  color: inherit;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.author-list a {
  text-decoration: none;
  transition:
    color 180ms ease,
    text-shadow 180ms ease;
}

.author-list a:hover,
.author-list a:focus-visible {
  color: var(--accent);
  text-shadow: 0 0 18px rgba(91, 223, 199, 0.24);
}

.author-list a:not(:last-child)::after,
.author-list .author-entry::after {
  margin: 0 0.58em;
  color: rgba(226, 177, 93, 0.82);
  content: "·";
}

.author-list .author-break {
  display: none;
  flex-basis: 100%;
  height: 0;
}

.author-list sup,
.affiliations sup,
.author-note sup {
  font-size: 0.58em;
  line-height: 0;
  vertical-align: super;
}

.affiliations {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35em 0.9em;
  width: min(1080px, 100%);
  max-width: none;
  margin: 0 auto clamp(8px, 1.2vh, 12px);
  color: rgba(242, 236, 222, 0.58);
  font-size: clamp(0.82rem, 1.08vw, 1.02rem);
  line-height: 1.5;
}

.author-note {
  margin: 0 auto clamp(24px, 3.6vh, 40px);
  color: rgba(242, 236, 222, 0.62);
  font-size: clamp(0.78rem, 0.92vw, 0.9rem);
  line-height: 1.35;
}

.hero .button-row {
  align-items: center;
  justify-content: center;
}

.hero .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 30px;
  line-height: 1;
  text-align: center;
}

.hero .button.primary {
  min-width: 150px;
}

.playground-heading {
  width: 100%;
  max-width: none;
  margin: 0 auto 18px;
  padding: 0 !important;
  text-align: left;
}

.playground-heading h2,
.playground-heading p {
  max-width: 820px;
  margin-left: 0;
  margin-right: auto;
}

.playground-heading h2 {
  font-size: clamp(2.6rem, 4.4vw, 4.4rem);
}

.viewer-heading,
#method,
#results,
#bibtex {
  width: min(1480px, calc(100% - 32px));
  max-width: none;
  padding-left: 0;
  padding-right: 0;
}

.viewer-heading .section-heading,
#method > .section-heading,
#results > .section-heading,
#bibtex > .section-heading {
  max-width: 900px;
  margin-left: 0;
  margin-right: auto;
  text-align: left;
}

.viewer-heading .section-heading h2,
#method > .section-heading h2,
#results > .section-heading h2,
#bibtex > .section-heading h2 {
  max-width: 900px;
  font-size: clamp(2.35rem, 4.1vw, 4.35rem);
  line-height: 0.98;
}

.viewer-heading .section-heading p,
#method > .section-heading p,
#results > .section-heading p,
#bibtex > .section-heading p {
  max-width: 820px;
  margin-left: 0;
  margin-right: auto;
}

.mesh-grid,
#method .wide-figure,
#method .method-grid,
#results .result-gallery,
#bibtex .bib-card {
  width: 100%;
  max-width: none;
  margin-left: 0;
  margin-right: 0;
}

#results .result-card img {
  width: 100%;
}

#interactive,
.viewer-heading,
#method,
#results,
#bibtex {
  scroll-margin-top: 104px;
}

.interactive-section > .mesh-grid {
  width: min(1480px, calc(100% - 32px));
  margin-left: auto;
  margin-right: auto;
}

.mesh-group-heading {
  display: block;
}

.mesh-group-heading p {
  display: none;
}

.mesh-group {
  min-width: 0;
  overflow: hidden;
}

.mesh-rail-shell {
  position: relative;
  min-width: 0;
}

.mesh-group-grid {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(410px, calc((100% - 32px) / 3));
  grid-template-columns: none;
  gap: 16px;
  min-width: 0;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-inline: contain;
  padding: 0 2px 12px;
  scroll-padding-inline: 2px;
  scroll-snap-type: x proximity;
  scrollbar-color: rgba(91, 223, 199, 0.58) rgba(237, 247, 243, 0.08);
  scrollbar-width: thin;
}

.mesh-group-grid::-webkit-scrollbar {
  height: 8px;
}

.mesh-group-grid::-webkit-scrollbar-track {
  background: rgba(237, 247, 243, 0.08);
  border-radius: 999px;
}

.mesh-group-grid::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, rgba(91, 223, 199, 0.92), rgba(226, 177, 93, 0.82));
  border-radius: 999px;
}

.mesh-group-grid .mesh-card {
  min-width: 0;
  scroll-snap-align: start;
}

@media (max-width: 720px) {
  .hero {
    min-height: calc(100svh - 62px);
    padding: 36px 0 34px;
  }

  .hero h1 {
    margin-bottom: 32px;
    font-size: clamp(4.1rem, 20vw, 6.2rem);
    line-height: 0.94;
  }

  .subtitle {
    margin-bottom: 22px;
  }

  .author-list {
    margin-bottom: 10px;
    font-size: clamp(0.84rem, 3.3vw, 0.98rem);
    line-height: 1.6;
  }

  .author-list a:not(:last-child)::after,
  .author-list .author-entry::after {
    margin: 0 0.42em;
  }

  .affiliations {
    gap: 0.25em 0.65em;
    margin-bottom: 6px;
    font-size: clamp(0.74rem, 3vw, 0.88rem);
  }

  .author-note {
    margin-bottom: 22px;
  }

  .playground-heading h2,
  .viewer-heading .section-heading h2,
  #method > .section-heading h2,
  #results > .section-heading h2,
  #bibtex > .section-heading h2 {
    font-size: clamp(2.2rem, 12vw, 3.3rem);
  }

  .playground-heading {
    width: 100%;
    padding: 0 !important;
  }

  .runtime-controls-guide {
    grid-template-columns: 1fr;
    margin-top: 14px;
    font-size: 0.76rem;
  }

  .runtime-controls-guide span {
    white-space: normal;
  }

  .viewer-heading,
  #method,
  #results,
  #bibtex {
    width: min(100% - 24px, var(--max));
  }

  .mesh-grid,
  #method .wide-figure,
  #method .method-grid,
  #results .result-gallery,
  #bibtex .bib-card {
    width: 100%;
  }

  .interactive-section > .mesh-grid {
    width: min(100% - 24px, var(--max));
  }

  .mesh-group-heading {
    display: block;
  }

  .mesh-group-heading p {
    max-width: none;
    margin-top: 6px;
    text-align: left;
  }

  .mesh-group-grid {
    grid-auto-columns: minmax(280px, 86vw);
    grid-template-columns: none;
    gap: 12px;
    padding-bottom: 10px;
  }

  .mesh-frame {
    height: clamp(300px, 72vw, 430px);
  }
}

@media (max-width: 1240px) and (min-width: 721px) {
  .author-list .author-break {
    display: block;
  }

  .author-list a:nth-of-type(4)::after {
    content: "";
    margin: 0;
  }
}

@media (max-width: 520px) {
  .hero {
    padding-top: 28px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}