:root {
  --ink: #101412;
  --muted: #5d6862;
  --subtle: #f4f7f5;
  --paper: #ffffff;
  --line: #dce4df;
  --dark: #07100d;
  --teal: #0b7f79;
  --teal-dark: #075a56;
  --coral: #d84a35;
  --gold: #c28a17;
  --green: #2f7a4f;
  --shadow: 0 20px 60px rgba(12, 22, 18, 0.14);
  --radius: 8px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: 0;
}

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

img {
  height: auto;
}

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

button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
}

button {
  cursor: pointer;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 36px;
  color: #fff;
  background: rgba(7, 16, 13, 0.78);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-weight: 800;
}

.brand-icon {
  display: block;
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  object-fit: cover;
  clip-path: inset(1px 0 0 0 round 7px);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
  display: none;
}

.nav-links a {
  padding: 9px 12px;
  border-radius: var(--radius);
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.94rem;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.nav-links a.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  outline: none;
}

.hero {
  position: relative;
  min-height: 600px;
  height: 76vh;
  max-height: 760px;
  display: flex;
  align-items: flex-end;
  isolation: isolate;
  overflow: hidden;
  color: #fff;
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-bg {
  background-image: url("static/figures/background.png");
  background-repeat: no-repeat;
  background-size: max(100vw, 2480px) auto;
  background-position: center center;
  transform: none;
}

.hero-shade {
  z-index: -1;
  background: rgba(4, 10, 8, 0.42);
}

.hero-content {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
  padding: 120px 0 96px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 12px;
  color: var(--coral);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #ffd2c9;
}

.hero h1 {
  margin: 0;
  max-width: 980px;
  font-size: 5rem;
  line-height: 0.96;
  font-weight: 900;
  letter-spacing: 0;
}

.hero-title {
  margin: 20px 0 0;
  max-width: 980px;
  color: rgba(255, 255, 255, 0.94);
  font-size: 1.64rem;
  line-height: 1.25;
  font-weight: 720;
}

.hero-copy {
  margin: 22px 0 0;
  max-width: 760px;
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--radius);
  padding: 10px 16px;
  font-weight: 760;
  line-height: 1.2;
  text-align: center;
  white-space: nowrap;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.button.primary {
  background: var(--coral);
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  background: #f05a41;
}

.button.secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.32);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  background: rgba(255, 255, 255, 0.2);
}

.button.muted {
  color: rgba(255, 255, 255, 0.68);
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.18);
  cursor: default;
}

.section {
  padding: 92px 0;
}

.section:nth-of-type(odd) {
  background: var(--subtle);
}

.section-inner {
  width: min(1120px, calc(100% - 48px));
  margin: 0 auto;
}

.section-heading {
  max-width: 860px;
  margin-bottom: 34px;
}

.section-heading.split {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.8fr);
  gap: 40px;
  max-width: none;
  align-items: end;
}

.section-heading h2 {
  margin: 0;
  color: var(--ink);
  font-size: 2.45rem;
  line-height: 1.08;
  letter-spacing: 0;
}

.section-heading p:not(.section-kicker) {
  margin: 0;
  color: var(--muted);
}

.lead {
  max-width: 880px;
  margin: 0 0 34px;
  color: #2b3530;
  font-size: 1.18rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric-card,
.info-panel,
.method-step,
.result-panel,
.video-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 12px 38px rgba(15, 26, 20, 0.08);
}

.metric-card {
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 22px;
}

.metric-value {
  color: var(--teal-dark);
  font-size: 2.12rem;
  line-height: 1;
  font-weight: 900;
}

.metric-label {
  margin-top: 20px;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.45;
}

.visual-section,
.dataset-section,
.results-section {
  background: #fff;
}

.wide-figure,
.image-showcase figure,
.figure-row figure,
.dataset-figure,
.method-figure {
  margin: 0;
}

.wide-figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.teaser-figure {
  margin: 32px 0;
}

.wide-figure.compact {
  max-width: 760px;
  margin-top: 28px;
  box-shadow: 0 12px 38px rgba(15, 26, 20, 0.08);
}

.wide-figure img,
.dataset-figure img,
.figure-row img,
.image-showcase img {
  width: 100%;
}

figcaption {
  padding: 14px 16px 16px;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.45;
  background: var(--paper);
  border-top: 1px solid var(--line);
}

.demo-section {
  background: #0c1512;
  color: #fff;
}

.demo-section .section-heading h2,
.demo-section .section-heading p:not(.section-kicker) {
  color: #fff;
}

.demo-section .section-heading p:not(.section-kicker) {
  color: rgba(255, 255, 255, 0.72);
}

.demo-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.tab-button {
  min-height: 42px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  padding: 9px 14px;
  color: rgba(255, 255, 255, 0.74);
  background: rgba(255, 255, 255, 0.08);
}

.tab-button:hover,
.tab-button:focus-visible,
.tab-button.is-active {
  color: #fff;
  background: var(--teal);
  border-color: var(--teal);
  outline: none;
}

.demo-panel[hidden] {
  display: none;
}

.video-grid {
  display: grid;
  gap: 18px;
}

.video-grid.four-up {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

#panel-multilingual .video-grid.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.video-grid.three-up {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.video-grid.emotion-grid {
  grid-template-columns: repeat(3, minmax(0, 300px));
  justify-content: center;
}

.video-grid.two-up {
  grid-template-columns: repeat(2, minmax(0, 360px));
  justify-content: center;
}

.video-card {
  overflow: hidden;
  background: #101a16;
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 18px 52px rgba(0, 0, 0, 0.24);
}

.video-card video {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #050806;
  object-fit: cover;
}

#panel-multilingual .video-card video {
  aspect-ratio: 9 / 16;
  object-fit: cover;
  object-position: center center;
}

.portrait-grid .video-card video {
  aspect-ratio: 9 / 16;
  object-fit: cover;
}

#panel-interactive .portrait-grid .interactive-wide-card video {
  aspect-ratio: 3 / 4;
  object-fit: contain;
}

.beat2-comparison {
  display: grid;
  gap: 34px;
}

.comparison-intro {
  max-width: 820px;
}

.comparison-intro .section-kicker,
.comparison-case-header span {
  color: #ffd2c9;
}

.comparison-intro h3 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 1.65rem;
  line-height: 1.22;
}

.comparison-intro p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.74);
}

.comparison-case {
  display: grid;
  gap: 18px;
  padding-top: 26px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.comparison-case-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
}

.comparison-case-header span {
  flex: 0 0 auto;
  font-size: 0.82rem;
  font-weight: 850;
  text-transform: uppercase;
}

.comparison-case-header h3 {
  margin: 0;
  color: #fff;
  font-size: 1.28rem;
  line-height: 1.25;
}

.paired-method-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(430px, 1fr));
  gap: 18px;
}

.method-pair-card {
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: #101a16;
  box-shadow: 0 14px 42px rgba(0, 0, 0, 0.2);
}

.method-pair-card.is-ours {
  border-color: rgba(255, 210, 201, 0.62);
  box-shadow: 0 18px 52px rgba(216, 74, 53, 0.18);
}

.paired-videos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.paired-videos video {
  width: min(48%, 188px);
  aspect-ratio: 9 / 16;
  height: auto;
  border-radius: calc(var(--radius) - 2px);
  background: #050806;
  object-fit: cover;
}

.method-pair-card h4 {
  margin: 12px 0 0;
  color: #fff;
  text-align: center;
  font-size: 0.95rem;
  line-height: 1.15;
  font-weight: 850;
}

.video-meta {
  padding: 18px;
}

.video-meta h3,
.long-demo h3,
.method-step h3,
.info-panel h3,
.result-panel h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  line-height: 1.25;
  letter-spacing: 0;
}

.video-meta p,
.method-step p,
.info-panel li,
.long-demo p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.96rem;
}

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

.image-showcase figure {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: #fff;
}

.long-demo {
  display: grid;
  grid-template-columns: minmax(240px, 360px) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 24px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
}

.long-demo video {
  width: 100%;
  aspect-ratio: 10 / 23;
  border-radius: var(--radius);
  background: #050806;
  object-fit: contain;
  object-position: center center;
}

.long-demo .section-kicker {
  color: #ffd2c9;
}

.long-demo h3 {
  font-size: 1.7rem;
  color: #fff;
}

.dataset-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.45fr) minmax(0, 0.9fr);
  gap: 22px;
  align-items: stretch;
}

.info-panel {
  padding: 24px;
}

.info-panel h3,
.result-panel h3,
.method-step h3 {
  color: var(--ink);
}

.info-panel ul {
  margin: 14px 0 0;
  padding-left: 20px;
}

.info-panel li {
  color: var(--muted);
  margin-bottom: 12px;
}

.dataset-figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 12px 38px rgba(15, 26, 20, 0.08);
}

.figure-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 22px;
}

.figure-row figure {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 12px 38px rgba(15, 26, 20, 0.08);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.68fr);
  gap: 22px;
  align-items: stretch;
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.method-step {
  min-height: 220px;
  padding: 22px;
}

.method-figure {
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: 0 12px 38px rgba(15, 26, 20, 0.08);
}

.method-figure img {
  width: 100%;
  max-height: 340px;
  object-fit: contain;
  padding: 22px 22px 0;
}

.method-figure figcaption {
  margin-top: auto;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 32px;
  margin-bottom: 24px;
  border-radius: var(--radius);
  color: #fff;
  background: var(--green);
  font-size: 0.88rem;
  font-weight: 900;
}

.method-step:nth-child(2) .step-number {
  background: var(--teal);
}

.method-step:nth-child(3) .step-number {
  background: var(--coral);
}

.method-step:nth-child(4) .step-number {
  background: var(--gold);
}

.method-step p {
  color: var(--muted);
}

.table-grid,
.study-grid {
  display: grid;
  gap: 22px;
}

.table-grid {
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
}

.study-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 22px;
}

.result-panel {
  padding: 22px;
}

.result-panel h3 {
  margin-bottom: 16px;
}

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

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  color: #26302b;
  font-size: 0.93rem;
}

th,
td {
  padding: 11px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: middle;
}

th {
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 850;
  text-transform: uppercase;
}

th span {
  color: var(--muted);
  font-weight: 700;
  text-transform: none;
}

tbody tr:last-child td {
  border-bottom: 0;
}

.ours-row td {
  color: var(--ink);
  background: #eaf5f2;
  font-weight: 850;
}

.runtime-list {
  display: grid;
  gap: 12px;
}

.runtime-list div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  min-height: 62px;
  padding: 14px;
  border-radius: var(--radius);
  background: var(--subtle);
}

.runtime-list span {
  color: var(--muted);
}

.runtime-list strong {
  color: var(--teal-dark);
  font-size: 1.2rem;
}

.bar-list {
  display: grid;
  gap: 14px;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(170px, 1fr) minmax(120px, 0.8fr) 60px;
  gap: 12px;
  align-items: center;
}

.bar-row span {
  color: var(--muted);
  font-size: 0.92rem;
}

.bar-row strong {
  text-align: right;
  color: var(--teal-dark);
}

.bar-track {
  height: 10px;
  overflow: hidden;
  border-radius: 999px;
  background: #e2ebe6;
}

.bar-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--teal);
  border-right: 4px solid var(--coral);
}

.citation-section {
  background: #101412;
  color: #fff;
}

.citation-section .section-heading h2 {
  color: #fff;
}

.citation-section .section-heading.split {
  align-items: center;
}

.citation-section .button.secondary {
  justify-self: end;
}

.copy-button.is-copied {
  background: var(--teal);
  border-color: var(--teal);
}

.citation-box {
  margin: 0;
  overflow-x: auto;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius);
  padding: 22px;
  color: #f2faf6;
  background: #050806;
  font-size: 0.95rem;
  line-height: 1.55;
}

.site-footer {
  padding: 26px 0;
  color: rgba(255, 255, 255, 0.72);
  background: var(--dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.footer-inner span:first-child {
  color: #fff;
  font-weight: 850;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 20px;
  }

  .hero {
    min-height: 560px;
    height: auto;
  }

  .hero-bg {
    background-size: auto 100%;
    background-position: center center;
  }

  .hero-content {
    padding: 128px 0 72px;
  }

  .hero h1 {
    font-size: 4rem;
  }

  .section-heading.split,
  .dataset-grid,
  .method-layout,
  .table-grid,
  .study-grid,
  .long-demo {
    grid-template-columns: 1fr;
  }

  .method-figure img {
    max-height: 300px;
  }

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

  .video-grid.three-up,
  .video-grid.emotion-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .video-grid.two-up {
    grid-template-columns: repeat(2, minmax(0, 340px));
  }

  #panel-multilingual .video-grid.four-up {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .paired-videos video {
    width: min(48%, 176px);
  }

  .citation-section .button.secondary {
    justify-self: start;
  }
}

@media (max-width: 720px) {
  :root {
    --header-height: 64px;
  }

  .site-header {
    gap: 14px;
  }

  .brand span:last-child {
    display: none;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .nav-links a {
    padding: 8px 9px;
    font-size: 0.88rem;
  }

  .hero {
    min-height: 540px;
  }

  .hero-bg {
    background-size: auto 100%;
    background-position: center center;
  }

  .hero-content,
  .section-inner {
    width: min(100% - 32px, 1120px);
  }

  .hero h1 {
    font-size: 3.2rem;
  }

  .hero-title {
    font-size: 1.28rem;
  }

  .hero-copy {
    font-size: 1rem;
  }

  .section {
    padding: 68px 0;
  }

  .section-heading h2 {
    font-size: 2rem;
  }

  .metric-grid,
  .method-grid,
  .video-grid.four-up,
  .video-grid.three-up,
  .video-grid.emotion-grid,
  .video-grid.two-up,
  .image-showcase,
  .figure-row {
    grid-template-columns: 1fr;
  }

  #panel-multilingual .video-grid.four-up {
    grid-template-columns: 1fr;
  }

  .comparison-case-header {
    display: grid;
    gap: 6px;
  }

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

  .paired-videos {
    gap: 10px;
  }

  .paired-videos video {
    width: min(48%, 168px);
  }

  .method-step {
    min-height: 0;
  }

  .method-figure img {
    max-height: 260px;
    padding: 18px 18px 0;
  }

  .bar-row {
    grid-template-columns: 1fr 66px;
  }

  .bar-track {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .bar-row strong {
    align-self: start;
  }

  .runtime-list div {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
  }
}

@media (max-width: 460px) {
  .hero {
    min-height: 520px;
  }

  .hero-content {
    padding-bottom: 56px;
  }

  .hero h1 {
    font-size: 2.65rem;
  }

  .hero-actions,
  .demo-tabs {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .tab-button {
    width: 100%;
    white-space: normal;
  }

  .section-heading h2 {
    font-size: 1.72rem;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
  }
}