:root {
  --ink: #18201d;
  --muted: #65716d;
  --line: rgba(24, 32, 29, 0.1);
  --paper: #fbfaf7;
  --panel: rgba(255, 255, 255, 0.72);
  --sage: #7a9a8d;
  --blue: #557b9d;
  --gold: #bca86b;
  --rose: #b58aa7;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: 'Noto Sans', sans-serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(122, 154, 141, 0.22), transparent 30rem),
    radial-gradient(circle at 88% 3%, rgba(85, 123, 157, 0.18), transparent 28rem),
    linear-gradient(180deg, #f8f5ee 0%, #fbfaf7 42%, #f5f7f4 100%);
}

a {
  color: var(--blue);
}

a:hover {
  color: var(--sage);
}

.copt-hero {
  position: relative;
  overflow: hidden;
  padding: 2.4rem 1rem 0.8rem;
}

.copt-hero::before {
  position: absolute;
  inset: 1.5rem;
  z-index: 0;
  content: '';
  border: 1px solid rgba(24, 32, 29, 0.08);
  border-radius: 36px;
  pointer-events: none;
}

.copt-hero .hero-body {
  position: relative;
  z-index: 1;
  padding-top: 3.5rem;
  padding-bottom: 2rem;
}

.paper-kicker {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.3rem;
  padding: 0.45rem 0.9rem;
  color: #55615d;
  font-family: 'Google Sans', sans-serif;
  font-size: 0.83rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
  border-radius: 999px;
  backdrop-filter: blur(14px);
}

.publication-title {
  max-width: 1120px;
  margin: 0 auto;
  color: var(--ink);
  font-family: 'Castoro', serif;
  font-size: clamp(2rem, 3.75vw, 3.85rem);
  font-weight: 500;
  line-height: 1.12;
  letter-spacing: -0.045em;
  text-align: center;
}

.publication-title .title-line {
  display: block;
  white-space: nowrap;
  text-align: center;
}

.brand-gradient {
  background: linear-gradient(100deg, var(--sage), var(--blue) 58%, var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 700;
}

.inline-brand {
  font-weight: 800;
}

.publication-authors {
  font-family: 'Google Sans', sans-serif;
}

.author-line {
  max-width: 900px;
  margin: 1.8rem auto 0.35rem;
  color: var(--ink);
  line-height: 1.8;
}

.affiliation-line {
  color: var(--muted);
  font-size: 1.02rem !important;
}

.author-block {
  display: inline-block;
  margin: 0 0.35rem;
}

.publication-authors a {
  color: var(--ink) !important;
  border-bottom: 1px solid rgba(85, 123, 157, 0.28);
}

.publication-authors a:hover {
  color: var(--blue) !important;
  border-bottom-color: var(--blue);
  text-decoration: none;
}

.publication-links {
  margin-top: 1.45rem;
}

.link-block a {
  margin: 0.28rem;
  border: 1px solid rgba(24, 32, 29, 0.08);
  box-shadow: 0 10px 24px rgba(24, 32, 29, 0.06);
}

.paper-button {
  color: #7b8984 !important;
  background: rgba(255, 255, 255, 0.48) !important;
  border-color: rgba(122, 154, 141, 0.16) !important;
}

.paper-button:hover {
  color: #5f716b !important;
  background: rgba(255, 255, 255, 0.66) !important;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  align-items: stretch;
  max-width: 760px;
  margin: 2rem auto 0;
}

.stat-card,
.result-card,
.method-card,
.glass-panel,
.paper-figure {
  background: var(--panel);
  border: 1px solid rgba(24, 32, 29, 0.09);
  box-shadow: 0 24px 70px rgba(38, 49, 45, 0.08);
  backdrop-filter: blur(18px);
}

.stat-card {
  display: grid;
  grid-template-rows: 1.2rem 3rem 2.8rem;
  align-items: center;
  justify-items: center;
  min-height: 118px;
  padding: 1rem 0.75rem;
  border-radius: 22px;
}

.stat-card span,
.stat-card small,
.result-card span {
  display: block;
  color: var(--muted);
  font-family: 'Google Sans', sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.stat-card strong {
  display: block;
  margin: 0;
  color: var(--ink);
  font-family: 'Castoro', serif;
  font-size: 2rem;
  font-weight: 500;
  line-height: 1;
}

.benchmark-card strong {
  max-width: 13rem;
  margin: 1.05rem auto 0;
  font-size: 1.18rem;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.benchmark-card small {
  line-height: 1.25;
}

.title-break {
  display: block;
}

.teaser-section {
  padding-top: 1.4rem;
  padding-bottom: 1.5rem;
}

.paper-figure {
  max-width: 1180px;
  margin: 0 auto;
  padding: clamp(0.75rem, 2vw, 1.25rem);
  border-radius: 28px;
}

.paper-figure img {
  display: block;
  width: 100%;
  border-radius: 0;
}

.pdf-figure-frame {
  position: relative;
  width: 100%;
  overflow: hidden;
  background: #fff;
  border-radius: 18px;
}

.pdf-figure-frame object {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.cover-frame {
  aspect-ratio: 2.85 / 1;
}

.method-frame {
  aspect-ratio: 2.15 / 1;
}

.method-figure {
  max-width: 960px;
  margin-bottom: 1.15rem;
}

.paper-figure figcaption {
  max-width: none;
  margin: 0.95rem auto 0.15rem;
  color: var(--muted);
  font-family: 'Google Sans', sans-serif;
  font-size: 0.9rem;
  line-height: 1.38;
  text-align: left;
}

.paper-figure figcaption .caption-line {
  display: block;
  white-space: normal;
}

.method-figure figcaption {
  max-width: none;
  font-size: 0.9rem;
}

.compact-section {
  padding-top: 1.2rem;
  padding-bottom: 1.2rem;
}

.section-title {
  margin-bottom: 1rem !important;
  font-family: 'Castoro', serif;
  font-weight: 500;
  letter-spacing: -0.02em;
  text-align: center;
}

.section-eyebrow {
  margin-bottom: 0.35rem;
  color: var(--blue);
  font-family: 'Google Sans', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.glass-panel {
  padding: clamp(1.1rem, 3vw, 1.6rem);
  border-radius: 24px;
}

.tldr-panel p {
  margin: 0;
  font-family: 'Google Sans', sans-serif;
  font-size: clamp(1.12rem, 2vw, 1.45rem);
  line-height: 1.55;
}

.abstract-panel p,
.glass-panel li,
.method-card p,
.result-card p {
  color: #3e4945;
  font-size: 1rem;
  line-height: 1.72;
}

.method-grid,
.results-grid {
  display: grid;
  gap: 1rem;
}

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

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

.method-card,
.result-card {
  border-radius: 24px;
}

.method-card {
  position: relative;
  min-height: 260px;
  padding: 1.45rem;
  overflow: hidden;
}

.method-card::after {
  position: absolute;
  right: -3rem;
  bottom: -3rem;
  width: 9rem;
  height: 9rem;
  content: '';
  background: radial-gradient(circle, rgba(122, 154, 141, 0.22), transparent 68%);
}

.method-index {
  color: var(--gold);
  font-family: 'Castoro', serif;
  font-size: 2.2rem;
}

.method-card h3 {
  margin: 0.55rem 0;
  font-family: 'Google Sans', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
}

.method-formula {
  position: relative;
  z-index: 1;
  margin: 0.65rem 0 0.75rem;
  padding: 0.62rem 0.7rem;
  color: #52605c;
  background: rgba(255, 255, 255, 0.38);
  border: 1px solid rgba(24, 32, 29, 0.06);
  border-radius: 14px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.method-formula mjx-container[jax="SVG"][display="true"] {
  margin: 0;
}

.method-formula svg {
  max-width: none;
}

.compact-formula {
  font-size: 0.96rem;
}

.long-formula {
  font-size: 0.78rem;
}

.result-card {
  display: grid;
  grid-template-rows: 1.5rem 4.05rem auto;
  align-items: start;
  min-height: 188px;
  padding: 1.15rem 1.15rem 1rem;
}

.result-card strong {
  display: block;
  align-self: center;
  margin: 0;
  color: var(--blue);
  font-family: 'Castoro', serif;
  font-size: 2.15rem;
  font-weight: 500;
  letter-spacing: -0.04em;
  line-height: 1;
}

.result-card:nth-child(4) strong {
  font-size: 1.42rem;
  line-height: 1.15;
  letter-spacing: -0.035em;
  white-space: nowrap;
}

.result-card p {
  margin: 0;
  color: #8b9692;
}

.result-card:nth-child(2) strong,
.result-card:nth-child(4) strong {
  color: var(--sage);
}

.content ul.clean-list,
.clean-list {
  margin-left: 0 !important;
  list-style: none !important;
}

.clean-list li {
  padding: 0.65rem 0 0.65rem 1.7rem;
  border-bottom: 1px solid rgba(24, 32, 29, 0.08);
}

.clean-list li:last-child {
  border-bottom: 0;
}

.clean-list li::before {
  display: inline-block;
  width: 1.7rem;
  margin-left: -1.7rem;
  color: var(--sage);
  content: '✦';
}

.bibtex-box {
  padding: 1.2rem !important;
  color: #e8eee9;
  background: #1c2421 !important;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 22px;
  box-shadow: 0 24px 70px rgba(24, 32, 29, 0.16);
  white-space: pre-wrap;
}

.copt-footer {
  margin-top: 1rem;
  padding: 2rem 1rem;
  color: var(--muted);
  background: transparent;
  border-top: 1px solid rgba(24, 32, 29, 0.08);
}

.footer .icon-link {
  color: #000;
  font-size: 25px;
}

.dnerf {
  font-variant: small-caps;
}

.publication-banner video {
  position: relative;
  top: auto;
  left: auto;
  object-fit: fit;
  transform: none;
}

.publication-video {
  position: relative;
  width: 100%;
  height: 0;
  padding-bottom: 56.25%;
  overflow: hidden;
  border-radius: 10px !important;
}

.publication-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.results-carousel {
  overflow: hidden;
}

.results-carousel .item {
  margin: 5px;
  padding: 20px;
  overflow: hidden;
  font-size: 0;
}

.results-carousel video {
  margin: 0;
}

.slider-pagination .slider-page {
  background: #000000;
}

.eql-cntrb {
  font-size: smaller;
}

@media (max-width: 900px) {
  .hero-stats,
  .results-grid {
    grid-template-columns: 1fr;
  }

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

  .paper-figure figcaption .caption-line {
    white-space: normal;
  }

  .copt-hero::before {
    inset: 0.75rem;
    border-radius: 24px;
  }
}

@media (max-width: 640px) {
  .copt-hero {
    padding-right: 0.25rem;
    padding-left: 0.25rem;
  }

  .publication-title {
    font-size: 2.25rem;
  }

  .author-block {
    margin: 0 0.2rem;
  }
}