:root {
  color-scheme: dark;
  --ink: #070a08;
  --ink-soft: #101511;
  --paper: #f1f1ea;
  --green: #76b900;
  --green-bright: #a7e132;
  --line-dark: rgba(255, 255, 255, 0.15);
  --line-light: rgba(12, 20, 13, 0.17);
  --shell: min(1240px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: auto;
  background: var(--ink);
}

body {
  margin: 0;
  color: #fff;
  background: var(--ink);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  text-rendering: optimizeLegibility;
}

button,
a {
  color: inherit;
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

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

[hidden] {
  display: none !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: #fff;
  background: #000;
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: none;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--green-bright);
  font-size: 0.67rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* Static title page */
.hero-page {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: var(--ink);
}

.hero-stage {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: clamp(88px, 11svh, 132px) 0 72px;
  overflow: hidden;
  isolation: isolate;
}

.scene-shade {
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(3, 7, 4, 0.95) 0%, rgba(3, 7, 4, 0.78) 50%, rgba(3, 7, 4, 0.42) 100%),
    linear-gradient(0deg, rgba(2, 5, 3, 0.97) 0%, rgba(2, 5, 3, 0.7) 38%, rgba(2, 5, 3, 0.38) 100%);
}

.intro-reel {
  position: absolute;
  z-index: 1;
  top: 48px;
  bottom: 48px;
  left: 0;
  width: max-content;
  display: flex;
  gap: 12px;
  pointer-events: none;
  animation: hero-reel-scroll 58s linear infinite;
}

.intro-reel-set {
  width: 200vw;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

@keyframes hero-reel-scroll {
  to { transform: translateX(calc(-50% - 6px)); }
}

.intro-card {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  background: #111;
}

.intro-card::after {
  position: absolute;
  inset: 0;
  content: "";
  background: rgba(0, 0, 0, 0.08);
}

.intro-card img,
.intro-card video,
.demo-card img,
.demo-card video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.intro-card video,
.demo-card video {
  opacity: 0;
  transition: opacity 240ms ease;
}

.intro-card.is-playing video,
.demo-card.is-playing video {
  opacity: 1;
}

.intro-copy,
.intro-data-dock {
  position: relative;
  z-index: 4;
  width: var(--shell);
  margin-inline: auto;
}

.intro-copy h1 {
  margin: 0;
  max-width: 100%;
  font-size: clamp(4.2rem, 8.3vw, 8.4rem);
  font-weight: 760;
  line-height: 0.86;
  letter-spacing: -0.075em;
}

.intro-copy h1 span {
  color: var(--green-bright);
}

.paper-title {
  max-width: 1040px;
  margin: 28px 0 22px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.28rem, 2vw, 2rem);
  line-height: 1.22;
  letter-spacing: -0.025em;
}

.intro-content-swap {
  display: block;
}

.intro-byline {
  max-width: none;
}

.authors {
  margin: 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(0.76rem, 1vw, 0.92rem);
  line-height: 1.75;
  white-space: nowrap;
}

.authors span {
  white-space: nowrap;
}

.affiliations {
  margin: 9px 0 0;
  color: var(--green-bright);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.intro-actions,
.citation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 18px;
}

.intro-actions a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 104px;
  padding: 8px 16px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  color: rgba(255, 255, 255, 0.92);
  background: rgba(3, 7, 4, 0.5);
  backdrop-filter: blur(10px);
  text-decoration: none;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.intro-actions a.is-featured {
  border-color: rgba(158, 234, 32, 0.78);
  background: rgba(118, 185, 0, 0.22);
}

.intro-actions a:hover,
.intro-actions a:focus-visible {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.intro-data-dock {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(460px, 0.95fr);
  gap: clamp(38px, 5vw, 72px);
  align-items: end;
  margin-top: auto;
  padding-top: clamp(42px, 7svh, 72px);
}

.intro-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.intro-metrics span {
  min-width: 0;
  padding: 0 17px 5px;
  border-left: 1px solid rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.6rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.intro-metrics span:first-child {
  padding-left: 0;
  border-left: 0;
}

.intro-metrics b {
  display: block;
  margin-bottom: 2px;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2rem, 3.4vw, 3.25rem);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.045em;
  text-transform: none;
}

.intro-benchmarks {
  width: 100%;
  margin: 0;
}

.benchmark-panel {
  padding: 0 0 4px;
  border: 0;
  outline: 0;
  background: transparent;
}

.benchmark-panel header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: start;
}

.benchmark-panel h2,
.benchmark-panel header p {
  margin: 0;
}

.benchmark-panel h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  font-weight: 400;
  line-height: 1.05;
}

.benchmark-panel header p {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.52rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.benchmark-badge {
  color: var(--green-bright);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 2rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.05em;
}

.latency-chart {
  display: grid;
  gap: 7px;
  margin-top: 10px;
}

.latency-axis {
  position: relative;
  height: 16px;
  margin: 0 48px 2px 88px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.4rem;
  font-variant-numeric: tabular-nums;
}

.latency-axis i {
  position: absolute;
  top: 2px;
  right: 0;
  left: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.28);
}

.latency-axis span {
  position: absolute;
  top: 6px;
  transform: translateX(-50%);
}

.latency-axis span:nth-of-type(1) { left: 0; }
.latency-axis span:nth-of-type(2) { left: 46%; }
.latency-axis span:nth-of-type(3) { left: 67%; }
.latency-axis span:nth-of-type(4) { left: 91%; }

.latency-row {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) 40px;
  gap: 9px;
  align-items: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.58rem;
  font-variant-numeric: tabular-nums;
}

.latency-row i {
  position: relative;
  height: 7px;
  overflow: hidden;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.08);
}

.latency-row i::before {
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--bar);
  border-radius: inherit;
  content: "";
  background: rgba(255, 255, 255, 0.58);
}

.latency-row b {
  color: rgba(255, 255, 255, 0.76);
  text-align: right;
}

.latency-row.ours-mark {
  color: var(--green-bright);
}

.latency-row.ours-mark i::before {
  background: var(--green-bright);
}

.latency-row.ours-mark b {
  color: var(--green-bright);
}

.chart-foot {
  display: flex;
  justify-content: space-between;
  margin: 9px 0 0 89px;
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.45rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

/* Abstract is a separate, normal-flow page. */
.abstract-page {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 96px 24px;
  color: #171d18;
  background: var(--paper);
}

.abstract-inner {
  width: min(1240px, 100%);
  display: grid;
  grid-template-columns: minmax(280px, 0.68fr) minmax(0, 1.32fr);
  gap: clamp(54px, 10vw, 150px);
  align-items: start;
}

.abstract-heading h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(4rem, 8vw, 8rem);
  font-weight: 400;
  line-height: 0.9;
  letter-spacing: -0.065em;
}

.abstract-heading .eyebrow {
  color: var(--green);
}

.abstract-heading > p:last-child {
  max-width: 420px;
  margin: 28px 0 0;
  color: #667068;
  font-size: 0.85rem;
}

.abstract-copy {
  margin: 3px 0 0;
  color: #4f5951;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.05rem, 1.55vw, 1.35rem);
  line-height: 1.72;
  text-wrap: pretty;
}

.abstract-copy strong {
  color: #171d18;
}

/* Normal-flow demo showcase */
.story {
  position: relative;
  height: auto;
  padding: 64px 0 120px;
  background:
    radial-gradient(circle at 88% 8%, rgba(118, 185, 0, 0.08), transparent 25%),
    var(--ink);
}

.story-stage,
.scene-stack {
  position: static;
  height: auto;
  overflow: visible;
}

.demo-section {
  width: var(--shell);
  margin: 0 auto;
  padding: 72px 0 80px;
  border-top: 1px solid var(--line-dark);
  scroll-margin-top: 24px;
}

.demo-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.demo-section-header {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, 0.55fr);
  gap: clamp(32px, 8vw, 120px);
  align-items: end;
  margin-bottom: 34px;
}

.demo-section-header h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 6.4vw, 6.6rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: -0.06em;
}

.demo-section-header > p {
  margin: 0 0 7px;
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.86rem;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.demo-card {
  position: relative;
  min-width: 0;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #151a16;
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.28);
  cursor: zoom-in;
}

.demo-card::after {
  position: absolute;
  z-index: 2;
  inset: 35% 0 0;
  content: "";
  pointer-events: none;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.84));
}

.demo-card:focus-visible {
  outline: 2px solid var(--green-bright);
  outline-offset: 3px;
}

.demo-meta {
  position: absolute;
  z-index: 4;
  top: 14px;
  left: 14px;
  display: flex;
  gap: 5px;
}

.demo-meta span {
  padding: 4px 7px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.78);
  background: rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(7px);
  font-size: 0.53rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.demo-copy {
  position: absolute;
  z-index: 4;
  right: 16px;
  bottom: 14px;
  left: 16px;
}

.demo-copy h3,
.demo-copy p {
  margin: 0;
}

.demo-copy h3 {
  font-size: 0.92rem;
  letter-spacing: 0.01em;
}

.demo-copy p {
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.66);
  font-size: 0.66rem;
  opacity: 0;
  transform: translateY(6px);
  transition: max-height 220ms ease, margin 220ms ease, opacity 180ms ease, transform 220ms ease;
}

.demo-card:hover .demo-copy p,
.demo-card:focus-within .demo-copy p {
  max-height: 6em;
  margin-top: 6px;
  opacity: 1;
  transform: none;
}

/* Citation */
.citation-page {
  min-height: 100svh;
  display: grid;
  place-items: center;
  padding: 90px 24px;
  color: #171d18;
  background: var(--paper);
}

.citation-inner {
  width: min(1240px, 100%);
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(50px, 9vw, 140px);
  align-items: center;
}

.citation-heading .eyebrow {
  color: var(--green);
}

.citation-heading h2 {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 6.5vw, 6.4rem);
  font-weight: 400;
  line-height: 0.95;
  letter-spacing: -0.065em;
}

.citation-heading > p:not(.eyebrow) {
  max-width: 480px;
  margin: 26px 0 0;
  color: #667068;
}

.citation-actions a,
.citation-actions button {
  min-width: 120px;
  padding: 11px 15px;
  border: 1px solid #9da59e;
  color: #202720;
  background: transparent;
  text-align: center;
  text-decoration: none;
  font-size: 0.72rem;
  font-weight: 800;
}

.citation-panel {
  overflow: hidden;
  border: 1px solid var(--line-light);
  background: #e5e6de;
}

.citation-bar {
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 18px;
  border-bottom: 1px solid var(--line-light);
  color: #5b655d;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.citation-bar button {
  padding: 7px 10px;
  border: 1px solid #343d35;
  color: #fff;
  background: #202720;
  font-size: 0.65rem;
  font-weight: 800;
}

.citation-panel pre {
  margin: 0;
  padding: clamp(24px, 4vw, 44px);
  overflow: auto;
  color: #283029;
  font: 0.74rem/1.75 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre-wrap;
}

/* Proportional video dialog */
.lightbox {
  width: 1280px;
  max-width: none;
  max-height: none;
  padding: 0;
  overflow: visible;
  border: 0;
  outline: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  background: #050505;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.62);
}

.lightbox::backdrop {
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(8px);
}

.lightbox-placeholder {
  width: 100%;
  height: var(--media-height, 720px);
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.72);
  background: #161c17 center / cover no-repeat;
  text-shadow: 0 2px 18px #000;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
}

.lightbox video {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--media-height, 720px);
  object-fit: contain;
  opacity: 0;
  transition: opacity 220ms ease;
}

.lightbox.is-playing video {
  opacity: 1;
}

.lightbox > p {
  margin: 0;
  padding: 15px 18px;
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.72rem;
}

.lightbox-close {
  position: absolute;
  z-index: 3;
  top: 12px;
  right: 12px;
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 50%;
  color: #fff;
  background: rgba(5, 5, 5, 0.58);
  backdrop-filter: blur(8px);
  font-size: 1.2rem;
}

@media (max-width: 900px) {
  :root { --shell: min(100% - 32px, 1240px); }

  .hero-stage { padding-top: 72px; }

  .intro-copy h1 { font-size: clamp(3.5rem, 13vw, 6.2rem); }

  .intro-content-swap,
  .intro-data-dock,
  .abstract-inner,
  .citation-inner {
    grid-template-columns: 1fr;
  }

  .intro-content-swap { gap: 28px; }

  .intro-data-dock { gap: 34px; }

  .intro-benchmarks { width: min(680px, 100%); }

  .abstract-inner { gap: 40px; }

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

  .intro-metrics span:nth-child(3) {
    padding-left: 0;
    border-left: 0;
  }

  .demo-section-header { grid-template-columns: 1fr; gap: 18px; }

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

@media (max-width: 1280px) {
  .authors { white-space: normal; }
}

@media (max-width: 600px) {
  :root { --shell: calc(100vw - 24px); }

  .hero-stage { padding: 58px 0 46px; }

  .intro-reel { top: 20px; bottom: 20px; }

  .intro-reel-set { width: 420vw; }

  .intro-copy h1 {
    font-size: clamp(3rem, 13vw, 4.2rem);
    line-height: 0.9;
  }

  .paper-title { margin-top: 22px; font-size: 1.2rem; }

  .intro-content-swap { grid-template-columns: 1fr; }

  .intro-abstract { padding: 17px 18px 19px; }

  .intro-metrics b { font-size: 2rem; }

  .intro-metrics span { padding: 15px 13px 17px; font-size: 0.52rem; }

  .benchmark-panel { padding: 16px 14px 14px; }

  .benchmark-badge { font-size: 1.65rem; }

  .latency-row { grid-template-columns: 68px minmax(0, 1fr) 36px; gap: 6px; font-size: 0.5rem; }

  .latency-axis { margin-left: 74px; margin-right: 40px; }

  .chart-foot { margin-left: 74px; }

  .story { padding-top: 42px; padding-bottom: 72px; }

  .demo-section { padding: 54px 0; }

  .demo-section-header h2 { font-size: clamp(2.8rem, 15vw, 4.4rem); }

  .demo-grid { grid-template-columns: 1fr; gap: 12px; }

  .citation-page { padding: 70px 16px; }

  .citation-inner { gap: 44px; }
}

@media (prefers-reduced-motion: reduce) {
  .intro-reel { animation: none; }

  .intro-card video,
  .demo-card video,
  .lightbox video,
  .demo-copy p {
    transition: none;
  }
}