@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800;900&family=JetBrains+Mono&display=swap");

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #ffffff;
  color: #1f2937;
  font-family: "Montserrat", ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
}

.page {
  min-height: 100vh;
  background: #ffffff;
}

.hero {
  max-width: 1024px;
  margin: 0 auto;
  padding: 80px 24px 64px;
  text-align: center;
}

.hero h1 {
  margin: 0 0 24px;
  color: #111827;
  font-size: clamp(2.25rem, 7vw, 3.75rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0;
}

.venue {
  margin: 0 0 32px;
  color: #6b7280;
  font-size: 1.5rem;
  font-weight: 500;
}

.authors,
.affiliations,
.logos,
.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}

.authors {
  gap: 12px 32px;
  margin-bottom: 32px;
}

.author {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}

.author a {
  color: #3b82f6;
  font-size: 1.125rem;
  font-weight: 500;
  transition: color 180ms ease;
}

.author a:hover {
  color: #1d4ed8;
}

.author-name {
  color: #1f2937;
  font-size: 1.125rem;
  font-weight: 500;
}

.author span:last-child {
  color: #9ca3af;
  font-size: 0.625rem;
  font-weight: 800;
}

.affiliations {
  gap: 8px 32px;
  margin-bottom: 48px;
  color: #4b5563;
}

.affiliations p {
  margin: 0;
  font-size: 0.95rem;
}

.logos {
  align-items: center;
  gap: 48px;
  margin-bottom: 64px;
  padding: 0 16px;
}

.logos img {
  height: 80px;
  object-fit: contain;
}

.logos img:nth-child(2) {
  height: 64px;
}

.actions {
  gap: 12px;
  margin-bottom: 64px;
}

.btn-academic {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 999px;
  background: #333333;
  color: #ffffff;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: 0 10px 15px -8px rgba(0, 0, 0, 0.35);
  transition: background 180ms ease, transform 180ms ease;
}

.btn-academic:hover {
  background: #000000;
}

.btn-academic:active,
.copy-btn:active {
  transform: scale(0.96);
}

[data-icon] {
  display: inline-flex;
  width: 18px;
  height: 18px;
  align-items: center;
  justify-content: center;
}

[data-icon] svg {
  width: 100%;
  height: 100%;
}

.stats-section {
  position: relative;
  z-index: 1;
  margin-top: -32px;
  margin-bottom: 80px;
  padding: 0 24px;
}

.stats-card {
  max-width: 1024px;
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid #f3f4f6;
  border-radius: 40px;
  background: #ffffff;
  box-shadow: 0 25px 60px rgba(209, 213, 219, 0.6);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}

.stat {
  min-height: 138px;
  padding: 32px 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  border-right: 1px solid #f9fafb;
  transition: background 180ms ease;
}

.stat:hover {
  background: #f9fafb;
}

.stat:last-child {
  border-right: 0;
}

.stat span {
  margin-bottom: 8px;
  color: #9ca3af;
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.stat strong {
  color: #111827;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 1.25rem;
}

.stat small {
  margin-top: 4px;
  color: #d1d5db;
  font-size: 0.56rem;
  font-weight: 800;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.stat:hover small {
  color: #f59e0b;
}

.task-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-top: 1px solid #f9fafb;
  background: rgba(249, 250, 251, 0.5);
  padding: 24px 40px;
}

.task-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
}

.task-label {
  border-radius: 999px;
  background: rgba(254, 243, 199, 0.5);
  color: #f59e0b;
  padding: 5px 12px;
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.task-list span:not(.task-label) {
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  background: #ffffff;
  color: #374151;
  padding: 5px 12px;
  font-size: 0.75rem;
  font-weight: 800;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
}

.resolution-note {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid #f3f4f6;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.8);
  color: #9ca3af;
  padding: 8px 16px;
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.resolution-note [data-icon] {
  color: #3b82f6;
  width: 12px;
  height: 12px;
}

.band {
  border-top: 1px solid #f3f4f6;
  border-bottom: 1px solid #f3f4f6;
  background: #f9fafb;
  padding: 64px 16px;
}

.two-column {
  max-width: 1152px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 32px;
}

.video-card {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: 16px;
  background: #000000;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.22);
}

.video-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  pointer-events: none;
  transition: background 180ms ease;
}

.video-card:hover .video-overlay {
  background: transparent;
}

.caption {
  position: absolute;
  left: 16px;
  bottom: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  padding: 4px 8px;
  font-size: 0.625rem;
  backdrop-filter: blur(12px);
}

.teaser-copy {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.teaser-copy h2 {
  margin: 0;
  color: #111827;
  font-size: 1.875rem;
  font-weight: 800;
  letter-spacing: 0;
}

.teaser-copy p {
  margin: 0;
  color: #4b5563;
  font-size: 1.125rem;
  line-height: 1.75;
}

.teaser-copy strong {
  color: #111827;
  font-weight: 700;
}

.mini-stats {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mini-stats div {
  display: flex;
  flex-direction: column;
}

.mini-stats strong {
  color: #111827;
  font-size: 1.5rem;
}

.mini-stats span {
  color: #9ca3af;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mini-stats i {
  width: 1px;
  height: 40px;
  background: #e5e7eb;
}

.abstract {
  max-width: 896px;
  margin: 0 auto;
  padding: 96px 24px;
  text-align: center;
}

.abstract h2 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin: 0 0 48px;
  color: #111827;
  font-size: 1.875rem;
  font-weight: 800;
}

.abstract h2 span {
  width: 32px;
  height: 1px;
  background: #d1d5db;
}

.abstract-box {
  border: 1px solid #f3f4f6;
  border-radius: 24px;
  background: #f9fafb;
  color: #4b5563;
  padding: 48px;
  text-align: left;
  font-size: 1.25rem;
  font-style: italic;
  font-weight: 300;
  line-height: 1.7;
}

.tasks {
  max-width: 1152px;
  margin: 0 auto;
  padding: 96px 24px;
}

.task-block {
  margin-bottom: 160px;
}

.task-block:last-child {
  margin-bottom: 0;
}

.section-heading {
  max-width: 768px;
  margin: 0 auto 48px;
  text-align: center;
}

.section-heading > span {
  display: block;
  margin-bottom: 24px;
  color: #3b82f6;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.section-heading h3 {
  margin: 0 0 24px;
  color: #111827;
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: 0;
}

.section-heading p {
  margin: 0;
  color: #6b7280;
  font-size: 1.125rem;
  line-height: 1.75;
}

.viewer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
}

.ply-viewer {
  position: relative;
  width: 100%;
  height: 400px;
  overflow: hidden;
  border: 1px solid #f3f4f6;
  border-radius: 16px;
  background: #f9fafb;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.04);
}

.ply-viewer canvas {
  width: 100%;
  height: 100%;
}

.viewer-label {
  position: absolute;
  top: 16px;
  left: 16px;
  opacity: 0;
  border: 1px solid #f3f4f6;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.8);
  color: #9ca3af;
  padding: 4px 12px;
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  backdrop-filter: blur(12px);
  transition: opacity 180ms ease;
}

.ply-viewer:hover .viewer-label {
  opacity: 1;
}

.viewer-loading,
.viewer-error {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-loading {
  background: rgba(249, 250, 251, 0.8);
  backdrop-filter: blur(4px);
}

.viewer-error {
  background: rgba(254, 242, 242, 0.8);
  color: #ef4444;
}

.spinner {
  width: 32px;
  height: 32px;
  border: 2px solid #bfdbfe;
  border-top-color: #3b82f6;
  border-radius: 999px;
  animation: spin 800ms linear infinite;
}

.image-frame {
  overflow: hidden;
  border: 1px solid #f3f4f6;
  border-radius: 24px;
  background: #f3f4f6;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.18);
}

.image-frame img {
  width: 100%;
  height: auto;
}

.dark-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 32px;
  overflow: hidden;
  border-radius: 32px;
  background: #111827;
  padding: 48px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.dark-copy {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.overline {
  display: flex;
  align-items: center;
  gap: 16px;
  color: rgba(255, 255, 255, 0.6);
}

.overline i {
  width: 40px;
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.overline span {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.dark-copy h4 {
  margin: 0;
  color: #ffffff;
  font-size: 1.5rem;
  font-weight: 800;
}

.dark-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.875rem;
  line-height: 1.75;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.badges span {
  border-radius: 8px;
  padding: 9px 16px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.badges span:first-child {
  background: #3b82f6;
  color: #ffffff;
}

.badges span:last-child {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.5);
}

.dark-image {
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
}

.citation {
  border-top: 1px solid #e5e7eb;
  border-bottom: 1px solid #e5e7eb;
  background: #f9fafb;
  padding: 96px 24px;
}

.citation-inner {
  max-width: 896px;
  margin: 0 auto;
}

.citation-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
  padding: 0 16px;
}

.citation-head h2 {
  margin: 0 0 8px;
  color: #111827;
  font-size: 1.875rem;
  font-weight: 800;
}

.citation-head p {
  margin: 0;
  color: #6b7280;
}

.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-width: 148px;
  border: 0;
  border-radius: 999px;
  background: #111827;
  color: #ffffff;
  cursor: pointer;
  padding: 10px 24px;
  font-size: 0.875rem;
  font-weight: 700;
  box-shadow: 0 12px 20px rgba(17, 24, 39, 0.18);
  transition: background 180ms ease, transform 180ms ease;
}

.copy-btn:hover {
  background: #1f2937;
}

.citation-card {
  overflow: hidden;
  border: 1px solid #e5e7eb;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.tabs {
  display: flex;
  border-bottom: 1px solid #e5e7eb;
}

.tab {
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: #9ca3af;
  cursor: pointer;
  padding: 16px 24px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.tab:hover {
  background: #f9fafb;
  color: #4b5563;
}

.tab.active {
  border-bottom-color: #3b82f6;
  background: rgba(239, 246, 255, 0.3);
  color: #2563eb;
}

#citationText {
  min-height: 200px;
  margin: 0;
  overflow-x: auto;
  padding: 32px;
  color: #374151;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.875rem;
  line-height: 1.7;
  white-space: pre-wrap;
}

.footer {
  border-top: 1px solid #f9fafb;
  padding: 80px 24px;
  text-align: center;
  color: #9ca3af;
}

.footer > p {
  margin: 0 0 24px;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 40px;
}

.footer-links a {
  color: #9ca3af;
  transition: color 180ms ease;
}

.footer-links a:hover:first-child {
  color: #111827;
}

.footer-links a:hover:last-child {
  color: #f59e0b;
}

.footer-small {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-small p {
  margin: 0;
  font-size: 0.75rem;
}

.footer-small a {
  color: #6b7280;
  font-weight: 700;
}

.footer-small a:hover {
  color: #111827;
}

.reveal {
  animation: fadeUp 700ms ease both;
}

.delay-1 {
  animation-delay: 120ms;
}

.delay-2 {
  animation-delay: 220ms;
}

.delay-3 {
  animation-delay: 320ms;
}

.delay-4 {
  animation-delay: 420ms;
}

.delay-5 {
  animation-delay: 520ms;
}

.delay-6 {
  animation-delay: 620ms;
}

@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 920px) {
  .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .stat {
    border-bottom: 1px solid #f9fafb;
  }

  .task-bar,
  .citation-head {
    flex-direction: column;
    align-items: stretch;
  }

  .two-column,
  .viewer-grid,
  .dark-comparison {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 56px;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .venue {
    font-size: 1.25rem;
  }

  .logos {
    gap: 28px;
  }

  .logos img,
  .logos img:nth-child(2) {
    max-width: 72%;
    height: auto;
    max-height: 72px;
  }

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

  .stats-card {
    border-radius: 28px;
  }

  .task-bar {
    padding: 24px;
  }

  .abstract-box {
    padding: 32px;
    font-size: 1.05rem;
  }

  .section-heading h3 {
    font-size: 2rem;
  }

  .dark-comparison {
    padding: 32px 24px;
    border-radius: 24px;
  }

  .copy-btn {
    width: 100%;
  }

  .tab {
    flex: 1;
    padding: 14px 10px;
  }
}