:root {
  color-scheme: light;
  --bg: #f6f9fb;
  --surface: #ffffff;
  --surface-2: #edf6f8;
  --line: rgba(24, 83, 92, 0.14);
  --line-strong: rgba(24, 83, 92, 0.26);
  --text: #10252b;
  --muted: #49646c;
  --faint: #789098;
  --accent: #087887;
  --accent-2: #055763;
  --shadow: rgba(26, 74, 86, 0.12);
  --radius: 18px;
  --max: 1180px;
  --font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 12% 4%, rgba(11, 143, 157, 0.12), transparent 32rem),
    linear-gradient(135deg, #f8fbfc 0%, #eef6f8 48%, #ffffff 100%);
  color: var(--text);
  font-family: var(--font);
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(24, 83, 92, 0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(24, 83, 92, 0.045) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 82%);
}

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

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 20;
  transform: translateY(-140%);
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  padding: 0.75rem 1rem;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(248, 251, 252, 0.86);
  backdrop-filter: blur(18px);
}

.nav-shell,
.section-shell {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.nav-shell {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid rgba(11, 143, 157, 0.34);
  border-radius: 12px;
  background: rgba(11, 143, 157, 0.1);
  color: var(--accent-2);
  font-family: var(--mono);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(0.8rem, 2vw, 1.6rem);
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-links a {
  transition: color 180ms ease, transform 180ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--text);
}

.hero {
  display: block;
  min-height: auto;
  padding: clamp(3.5rem, 7vw, 5.5rem) 0 clamp(2.5rem, 5vw, 4rem);
}

.hero-copy {
  max-width: 1180px;
  margin: 0 auto;
  text-align: center;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

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

h1 {
  max-width: 12ch;
  margin-bottom: 1.25rem;
  font-size: clamp(3rem, 7vw, 6.8rem);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.paper-title {
  max-width: 1120px;
  margin: 0 auto 1.6rem;
  font-size: clamp(2rem, 3.35vw, 4.05rem);
  line-height: 1.08;
  letter-spacing: -0.038em;
}

.author-line,
.affiliation-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin: 0 auto;
}

.author-block {
  display: grid;
  gap: 0.18rem;
}

.author-line {
  gap: 0.5rem 1.15rem;
  max-width: 1120px;
  color: var(--text);
  font-size: clamp(1rem, 1.6vw, 1.45rem);
  line-height: 1.5;
}

.author-line span {
  border-bottom: 1px solid rgba(24, 83, 92, 0.2);
}

.author-line-secondary {
  gap: 0.5rem 1.4rem;
}

.affiliation-line {
  gap: 0.4rem 1.35rem;
  max-width: 980px;
  margin-top: 0.65rem;
  color: var(--muted);
  font-size: clamp(0.9rem, 1.25vw, 1.12rem);
  line-height: 1.45;
}

.abstract-card {
  max-width: 980px;
  margin: clamp(1.8rem, 4vw, 2.8rem) auto 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 18px 60px var(--shadow);
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  text-align: left;
}

.abstract-card span {
  display: block;
  margin-bottom: 0.85rem;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: clamp(1.05rem, 1.35vw, 1.35rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.abstract-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(0.95rem, 1.15vw, 1.08rem);
  line-height: 1.72;
  text-align: justify;
  text-justify: inter-word;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.85rem;
  margin: 1rem auto 0;
  max-width: 980px;
  text-align: left;
}

.highlight-grid article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.68);
  padding: 1rem;
}

.highlight-grid h2 {
  max-width: none;
  margin-bottom: 0.45rem;
  color: var(--text);
  font-size: clamp(1rem, 1.35vw, 1.25rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.highlight-grid p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
  text-align: justify;
  text-justify: inter-word;
}

sup {
  font-size: 0.62em;
  line-height: 0;
  vertical-align: super;
}

h2 {
  max-width: 12ch;
  margin-bottom: 1rem;
  font-size: clamp(1.75rem, 3vw, 3rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h3 {
  margin-bottom: 0.7rem;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.hero-text,
.stacked-heading p,
.problem-grid p,
.method-copy p,
.results-copy p {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.hero-text {
  max-width: 58ch;
  margin-bottom: 1.8rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.8rem 1.1rem;
  font-weight: 800;
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.button:active {
  transform: translateY(1px) scale(0.99);
}

.button.primary {
  background: var(--accent);
  color: #ffffff;
}

.button.secondary {
  border: 1px solid var(--line-strong);
  color: var(--text);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  border-color: rgba(11, 143, 157, 0.62);
  background: rgba(11, 143, 157, 0.08);
}

.method-card,
.feature-stack {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.96), rgba(237, 246, 248, 0.92));
  box-shadow: 0 28px 90px var(--shadow);
  overflow: hidden;
}

.method-card img {
  width: 100%;
  border-radius: calc(var(--radius) - 8px);
  background: #f8fbfc;
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-top: 0.9rem;
}

.hero-stats {
  max-width: 760px;
  margin-top: 2rem;
}

.metric-strip div,
.result-metrics div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.86);
  padding: 1rem;
}

.metric-strip strong,
.result-metrics strong {
  display: block;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: clamp(1.35rem, 3vw, 2rem);
  line-height: 1;
}

.metric-strip span,
.result-metrics span {
  display: block;
  margin-top: 0.4rem;
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.45;
}

.system-band,
.problem-band,
.video-band {
  border-block: 1px solid var(--line);
  background: rgba(237, 246, 248, 0.64);
}

.system-section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.system-section .stacked-heading {
  max-width: none;
}

.system-figure-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.system-figure {
  display: grid;
  align-content: space-between;
  min-width: 0;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 60px var(--shadow);
  overflow: hidden;
}

.system-figure img {
  width: 100%;
  height: 100%;
  max-height: 520px;
  object-fit: contain;
  background: #ffffff;
  padding: clamp(0.7rem, 1.5vw, 1rem);
}

.system-figure figcaption {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.5;
  padding: 0.85rem 1rem 1rem;
}

.system-figure figcaption strong {
  color: var(--text);
}

.problem-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1.15fr);
  gap: clamp(2rem, 6vw, 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.problem-list {
  display: grid;
  gap: 0.9rem;
}

.problem-list article {
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(255, 255, 255, 0.74);
  padding: 1rem 1.1rem;
}

.problem-list span {
  display: block;
  margin-bottom: 0.4rem;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.problem-list p {
  margin-bottom: 0;
}

.feature-section,
.method-section,
.evidence-section {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.conclusion-section {
  padding: clamp(3.5rem, 7vw, 6rem) 0 clamp(4rem, 8vw, 7rem);
}

.stacked-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.stacked-heading h2 {
  max-width: 11ch;
}

.feature-section .stacked-heading,
.feature-section .stacked-heading h2 {
  max-width: none;
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(260px, 0.48fr) minmax(0, 1fr);
  gap: clamp(1.2rem, 4vw, 3rem);
  align-items: center;
  padding: clamp(1.2rem, 3.2vw, 2rem);
}

.feature-row + .feature-row {
  border-top: 1px solid var(--line);
}

.feature-copy {
  min-width: 0;
}

.feature-code {
  display: inline-flex;
  margin-bottom: 0.75rem;
  border: 1px solid rgba(11, 143, 157, 0.24);
  border-radius: 999px;
  background: rgba(11, 143, 157, 0.08);
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 1.12rem;
  font-weight: 800;
  letter-spacing: 0.01em;
  padding: 0.58rem 1rem;
}

.feature-copy h3 {
  max-width: 18ch;
  font-size: clamp(1.25rem, 2.2vw, 1.9rem);
  line-height: 1.08;
}

.feature-copy p {
  color: var(--muted);
  line-height: 1.65;
  margin-bottom: 0;
  text-align: justify;
  text-justify: inter-word;
}

.feature-figure {
  margin: 0;
  min-width: 0;
}

.feature-figure img {
  width: 100%;
  display: block;
  border-radius: calc(var(--radius) - 8px);
  background: #ffffff;
}

.method-section {
  display: grid;
  gap: 2rem;
}

.method-section .method-copy {
  max-width: none;
}

.method-section .method-copy h2 {
  max-width: none;
}

.method-section .method-copy p {
  max-width: none;
  text-align: justify;
  text-justify: inter-word;
}

.method-card {
  padding: 1rem;
}

.video-band {
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.video-band .stacked-heading,
.video-band .stacked-heading h2 {
  max-width: none;
}

.dataset-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  margin: -0.6rem 0 1.5rem;
}

.dataset-stats article {
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) - 8px);
  background: rgba(255, 255, 255, 0.66);
  padding: 0.9rem 1rem;
}

.dataset-stats strong {
  display: block;
  color: var(--text);
  font-size: clamp(1.45rem, 2.5vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.dataset-stats span {
  display: block;
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.35;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.video-gallery {
  display: grid;
  gap: 1.5rem;
}

.target-group {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.72);
  padding: 1rem;
}

.target-group-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.target-group-header h3 {
  margin-bottom: 0;
  font-size: clamp(1.35rem, 3vw, 2rem);
}

.target-group-header span {
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 1.08rem;
  font-weight: 800;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.8rem;
}

.video-grid article {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.88);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.video-grid video {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  background: #dcebef;
}

.video-grid h3 {
  padding-inline: 1rem;
}

.video-grid h3 {
  margin-top: 0.85rem;
  margin-bottom: 0.6rem;
  font-size: 0.95rem;
}

.target-meta {
  display: grid;
  gap: 0.35rem;
  margin: 0 1rem 1rem;
  color: rgba(70, 94, 101, 0.76);
  font-size: 0.72rem;
  line-height: 1.25;
}

.target-meta div {
  display: grid;
  grid-template-columns: minmax(4.6rem, 0.78fr) minmax(0, 1fr);
  gap: 0.35rem;
  align-items: baseline;
}

.target-meta dt,
.target-meta dd {
  margin: 0;
}

.target-meta dt {
  color: rgba(70, 94, 101, 0.76);
  font-weight: 650;
}

.target-meta dd {
  color: rgba(70, 94, 101, 0.76);
  font-weight: 650;
}

.target-note {
  margin: 1rem 0 0;
  border: 1px solid rgba(13, 111, 124, 0.2);
  border-radius: calc(var(--radius) - 12px);
  background: rgba(229, 248, 250, 0.62);
  padding: 0.78rem 0.95rem;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  text-align: justify;
}

.evidence-section {
  display: block;
}

.results-copy h2 {
  max-width: none;
}

.results-copy h2 + .result-block {
  margin-top: clamp(1.7rem, 3vw, 2.4rem);
}

.result-block {
  margin-top: 1.1rem;
  border: 1px solid rgba(24, 83, 92, 0.12);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.36);
  padding: 0.95rem;
}

.result-block-title {
  margin: 0 0 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: clamp(1.35rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
}

.setting-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.setting-cards article {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  padding: 1rem 1.1rem;
}

.setting-cards h4 {
  margin-top: 0;
  margin-bottom: 0.45rem;
  color: var(--text);
  font-size: clamp(1rem, 1.45vw, 1.22rem);
  letter-spacing: -0.02em;
}

.setting-cards p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.58;
  text-align: justify;
  text-justify: inter-word;
}

.result-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.table-stack {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.data-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.9);
  overflow: hidden;
}

.data-panel h3 {
  margin: 0;
  border-bottom: 1px solid var(--line);
  padding: 1rem 1.1rem;
}

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

table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

th,
td {
  border-bottom: 1px solid rgba(24, 83, 92, 0.1);
  padding: 0.78rem 0.8rem;
  text-align: right;
  white-space: nowrap;
}

th:first-child,
td:first-child {
  text-align: left;
}

thead th {
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: 0.94rem;
  font-weight: 800;
}

tbody th {
  color: var(--text);
  font-weight: 700;
}

tbody td {
  color: var(--muted);
  font-family: var(--mono);
}

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

.row-soft th,
.row-soft td {
  background: rgba(11, 143, 157, 0.06);
}

.row-strong th,
.row-strong td {
  background: rgba(11, 143, 157, 0.12);
  color: var(--accent-2);
}

.conclusion-heading {
  max-width: 900px;
  margin-bottom: 1.4rem;
}

.conclusion-heading h2 {
  max-width: none;
}

.conclusion-heading p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

.conclusion-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 1rem;
}

.conclusion-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 22px 70px var(--shadow);
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
}

.conclusion-card h3 {
  margin-bottom: 1rem;
  color: var(--text);
  font-size: clamp(1.25rem, 2.4vw, 1.8rem);
  letter-spacing: -0.03em;
}

.conclusion-list {
  display: grid;
  gap: 0.78rem;
  margin: 0;
  padding-left: 1.15rem;
  color: var(--muted);
  line-height: 1.62;
  text-align: justify;
  text-justify: inter-word;
}

.conclusion-list li::marker {
  color: var(--accent-2);
}

.conclusion-metrics {
  display: grid;
  gap: 0.75rem;
}

.conclusion-metrics div {
  border: 1px solid rgba(24, 83, 92, 0.12);
  border-radius: calc(var(--radius) - 4px);
  background: rgba(229, 248, 250, 0.58);
  padding: 0.95rem;
}

.conclusion-metrics strong {
  display: block;
  color: var(--accent-2);
  font-family: var(--mono);
  font-size: clamp(1.65rem, 3.2vw, 2.45rem);
  line-height: 1;
}

.conclusion-metrics span {
  display: block;
  margin-top: 0.42rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.conclusion-results p {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: 0.96rem;
  line-height: 1.6;
  text-align: justify;
  text-justify: inter-word;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--faint);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  font-size: 0.88rem;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1), transform 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

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

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

@media (max-width: 980px) {
  .nav-shell,
  .section-shell {
    width: min(100% - 28px, var(--max));
  }

  .nav-shell {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.8rem;
    padding: 0.9rem 0;
  }

  .nav-links {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 0.2rem;
    white-space: nowrap;
  }

  .hero,
  .problem-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 4rem;
  }

  h1 {
    max-width: 11ch;
  }

  .feature-row {
    grid-template-columns: 1fr;
  }

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

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

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

  .dataset-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .metric-strip,
  .result-metrics,
  .setting-cards,
  .highlight-grid,
  .dataset-stats,
  .video-grid {
    grid-template-columns: 1fr;
  }

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

  .button {
    width: 100%;
  }

  h1 {
    font-size: clamp(2.6rem, 17vw, 4.3rem);
  }

  h2 {
    font-size: clamp(1.65rem, 9vw, 2.35rem);
  }

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