:root {
  --ink: #1d1d1f;
  --ink-soft: #424245;
  --muted: #6e6e73;
  --bg: #f5f5f7;
  --glass: rgba(255, 255, 255, 0.76);
  --glass-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.14);
  --blue: #0071e3;
  --cyan: #8ec5ff;
  --mint: #e8fff5;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.08);
  --shadow-soft: 0 14px 38px rgba(0, 0, 0, 0.06);
  --radius-xl: 30px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 50% -8%, rgba(0, 113, 227, 0.11), transparent 34rem),
    linear-gradient(180deg, #fbfbfd 0%, var(--bg) 48%, #ffffff 100%);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.55;
  min-height: 100vh;
}

body::before,
body::after {
  content: "";
  position: fixed;
  z-index: -2;
  border-radius: 999px;
  filter: blur(8px);
  pointer-events: none;
}

body::before {
  top: 110px;
  left: max(-220px, calc((100vw - var(--max)) / 2 - 300px));
  width: 520px;
  height: 520px;
  background: radial-gradient(circle, rgba(0, 113, 227, 0.08), transparent 70%);
}

body::after {
  right: max(-260px, calc((100vw - var(--max)) / 2 - 320px));
  bottom: 12%;
  width: 560px;
  height: 560px;
  background: radial-gradient(circle, rgba(174, 217, 255, 0.14), transparent 70%);
}

a {
  color: inherit;
}

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

video {
  background: #030712;
}

.grain {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.42;
  background:
    linear-gradient(115deg, transparent 0%, rgba(255, 255, 255, 0.68) 42%, transparent 62%),
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.86), transparent 24rem);
  mask-image: linear-gradient(180deg, #000 0%, transparent 62%);
}

.site-header {
  position: sticky;
  top: 12px;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1040px, calc(100% - 40px));
  margin: 12px auto 0;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(251, 251, 253, 0.72);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.06);
  backdrop-filter: blur(28px) saturate(1.35);
}

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

.brand {
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-logo {
  display: block;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.12);
}

.nav {
  gap: 3px;
}

.nav a {
  padding: 8px 11px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 590;
  text-decoration: none;
}

.nav a:hover {
  color: var(--ink);
  background: rgba(0, 0, 0, 0.04);
}

.section-shell {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
  align-items: center;
  padding: 94px 0 104px;
}

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

.hero-wordmark {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(14px, 2vw, 24px);
  width: fit-content;
  margin: 0 auto 16px;
}

.hero-logo {
  flex: 0 0 auto;
  width: 92px;
  height: 92px;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, 0.84);
  border-radius: 27px;
  object-fit: cover;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.85),
    0 18px 44px rgba(0, 0, 0, 0.08);
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero .eyebrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  margin: 0 auto 18px;
  padding: 8px 15px;
  border: 1px solid rgba(0, 113, 227, 0.18);
  border-radius: 999px;
  background:
    radial-gradient(circle at 28% 18%, rgba(255, 255, 255, 0.92), transparent 30%),
    rgba(255, 255, 255, 0.72);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 10px 26px rgba(0, 0, 0, 0.05);
  color: var(--blue);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  backdrop-filter: blur(20px) saturate(1.25);
}

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

h1,
h2 {
  margin-bottom: 18px;
  color: var(--ink);
  font-weight: 730;
  letter-spacing: -0.045em;
  line-height: 1.02;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(3.9rem, 9.5vw, 7.8rem);
  letter-spacing: -0.048em;
  line-height: 0.95;
}

.project-title {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.01em;
}

.project-title span {
  display: inline-block;
}

.paper-title {
  max-width: 900px;
  margin: 0 auto 18px;
  color: var(--ink);
  font-size: clamp(1.34rem, 2.38vw, 2.34rem);
  font-weight: 640;
  letter-spacing: -0.028em;
  line-height: 1.13;
  text-wrap: balance;
}

.paper-title span {
  display: inline;
}

.paper-title strong {
  color: var(--blue);
  font-weight: 760;
  letter-spacing: -0.015em;
}

h2 {
  max-width: 820px;
  font-size: clamp(2.15rem, 4.2vw, 4.25rem);
}

h3 {
  margin-bottom: 10px;
  color: var(--ink);
  font-size: 1.12rem;
  font-weight: 680;
  letter-spacing: -0.024em;
}

.lead {
  max-width: 790px;
  margin: 0 auto;
  color: var(--muted);
  font-size: clamp(1.02rem, 1.55vw, 1.22rem);
  font-weight: 400;
}

.authors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin: 24px auto 10px;
}

.authors a,
.authors span {
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
  color: var(--ink-soft);
  font-size: 0.91rem;
  font-weight: 500;
  text-decoration: none;
  backdrop-filter: blur(18px);
}

.authors a:hover {
  border-color: rgba(0, 113, 227, 0.24);
  color: var(--blue);
  background: rgba(255, 255, 255, 0.9);
}

.affiliations {
  max-width: 860px;
  margin: 0 auto;
  color: var(--muted);
  font-size: 0.96rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 650;
  backdrop-filter: blur(20px) saturate(1.25);
}

.button.primary {
  color: var(--blue);
  border-color: rgba(0, 113, 227, 0.2);
  background:
    radial-gradient(circle at 30% 15%, rgba(255, 255, 255, 0.86), transparent 26%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(246, 250, 255, 0.76));
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.95),
    0 10px 26px rgba(0, 0, 0, 0.05);
}

.button.ghost {
  color: var(--ink-soft);
  background: rgba(255, 255, 255, 0.7);
}

.button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.9);
}

.hero-media,
.figure-card,
.video-card,
.wide-figure,
.abstract,
.feature-card,
.lighting-pair,
.stat-strip div,
.citation-box {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.66));
  box-shadow: var(--shadow);
  backdrop-filter: blur(30px) saturate(1.22);
}

.hero-media {
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: 12px;
}

.hero-media video,
.video-card video,
.figure-card img,
.wide-figure img {
  border-radius: calc(var(--radius-xl) - 13px);
}

.hero-media video {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.media-caption {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  padding: 10px 2px 0;
}

.media-caption span {
  border: 1px solid rgba(93, 123, 158, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.56);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 7px 8px;
  text-align: center;
  text-transform: uppercase;
}

.abstract {
  margin-bottom: 88px;
  padding: 36px;
}

.abstract-copy {
  max-width: 1040px;
}

.abstract-copy p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.35vw, 1.18rem);
  line-height: 1.66;
  overflow-wrap: normal;
  text-align: left;
  word-break: normal;
}

.split,
.media-section,
.proxy-section,
.control-section,
.dataset-section,
.comparison-section,
.citation-section {
  padding: 70px 0;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  gap: 30px;
  align-items: start;
}

.section-intro p:not(.section-kicker) {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.02rem;
}

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

.feature-card {
  min-height: 242px;
  padding: 23px;
}

.card-number {
  display: inline-block;
  margin-bottom: 52px;
  color: #4f8cff;
  font-size: 2rem;
  font-weight: 850;
  line-height: 1;
}

.feature-card p,
figcaption {
  color: var(--muted);
}

.wide-figure {
  padding: 10px;
}

.pipeline-single {
  display: grid;
  grid-template-columns: 1fr;
}

.pipeline-single .figure-card {
  padding: 12px;
}

.pipeline-single .figure-card img {
  background: #ffffff;
}

.dataset-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
  gap: 18px;
  align-items: start;
}

.figure-card,
.video-card {
  margin: 0;
  padding: 10px;
}

figcaption {
  padding: 12px 7px 4px;
  font-size: 0.9rem;
}

.proxy-demo {
  max-width: 900px;
  margin: 0 auto 20px;
}

.pass-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.pass-card {
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--glass-strong);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(22px) saturate(1.2);
}

.pass-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.pass-card figcaption {
  padding: 11px 14px 13px;
  color: var(--ink-soft);
  font-weight: 800;
}

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

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

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

.lighting-pairs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.lighting-pair {
  display: grid;
  gap: 10px;
  padding: 12px;
}

.lighting-pair h3 {
  margin: 4px 6px 2px;
  color: var(--ink-soft);
}

.lighting-pair .video-card {
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(248, 252, 255, 0.58));
  box-shadow: none;
  backdrop-filter: blur(16px) saturate(1.15);
}

.lighting-pair figcaption {
  padding-bottom: 2px;
}

.video-grid.results {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.video-grid.results .video-card:nth-child(1),
.video-grid.results .video-card:nth-child(2) {
  grid-column: span 3;
}

.video-grid.results .video-card:nth-child(n + 3) {
  grid-column: span 2;
}

.video-card.featured {
  outline: 2px solid rgba(79, 140, 255, 0.38);
  box-shadow: 0 26px 82px rgba(79, 140, 255, 0.18);
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin: 30px 0 22px;
}

.stat-strip div {
  padding: 22px;
}

.stat-strip strong,
.stat-strip span {
  display: block;
}

.stat-strip strong {
  color: var(--ink);
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  font-weight: 860;
  line-height: 1;
}

.stat-strip span {
  margin-top: 8px;
  color: var(--muted);
  font-weight: 800;
}

.annotation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.annotation-grid img {
  height: 100%;
  min-height: 164px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  object-fit: cover;
  box-shadow: var(--shadow-soft);
}

.citation-box {
  position: relative;
  padding: 0;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(244, 249, 255, 0.78)),
    radial-gradient(circle at 100% 0%, rgba(98, 212, 255, 0.18), transparent 18rem);
}

.citation-box pre {
  overflow-x: auto;
  margin: 0;
  padding: 28px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.copy-button {
  position: absolute;
  top: 14px;
  right: 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  color: var(--ink-soft);
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 7px 12px;
  backdrop-filter: blur(14px);
}

.copy-button:hover {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.9);
}

.footer {
  width: min(var(--max), calc(100% - 32px));
  margin: 20px auto 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.footer a {
  color: #4077d8;
  font-weight: 800;
  text-decoration: none;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 680ms ease,
    transform 680ms ease;
  transition-delay: var(--delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    border-radius: 24px;
  }

  .nav {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .split,
  .dataset-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 58px;
  }

  .feature-grid,
  .video-grid.three,
  .lighting-pairs,
  .pass-grid,
  .stat-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .video-grid.results .video-card:nth-child(n) {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .site-header {
    position: static;
    flex-direction: column;
    margin-top: 10px;
  }

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

  .nav a {
    padding: 7px 9px;
    font-size: 0.86rem;
  }

  .hero {
    gap: 24px;
    padding: 42px 0 60px;
  }

  h1 {
    font-size: clamp(3.35rem, 18vw, 5.2rem);
  }

  .hero-wordmark {
    gap: 12px;
  }

  .hero-logo {
    width: 62px;
    height: 62px;
    border-radius: 19px;
  }

  .authors a,
  .authors span {
    font-size: 0.83rem;
  }

  .media-caption,
  .feature-grid,
  .lighting-pairs,
  .video-grid.three,
  .video-grid.results,
  .pass-grid,
  .stat-strip,
  .annotation-grid {
    grid-template-columns: 1fr;
  }

  .abstract {
    padding: 24px;
  }

  .split,
  .media-section,
  .proxy-section,
  .control-section,
  .dataset-section,
  .comparison-section,
  .citation-section {
    padding: 50px 0;
  }

  .citation-box pre {
    padding: 58px 18px 22px;
    font-size: 0.82rem;
  }
}

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

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