:root {
  --ink: #0b1322;
  --muted: #586579;
  --line: #dbe3ec;
  --paper: #f7f9fc;
  --white: #ffffff;
  --navy: #07111f;
  --navy-2: #0b1a2d;
  --cyan: #57d7ff;
  --cyan-deep: #0aa7db;
  --mint: #6df2b3;
  --violet: #9b87ff;
  --orange: #ffb35c;
  --radius: 22px;
  --shadow: 0 24px 70px rgba(19, 43, 73, 0.14);
  --max-width: 1180px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.menu-open,
body.lightbox-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

button,
input,
textarea,
select {
  font: inherit;
}

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

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 1000;
  padding: 10px 16px;
  color: var(--navy);
  background: var(--cyan);
  border-radius: 8px;
  font-weight: 750;
  text-decoration: none;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.container {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(7, 17, 31, 0.72);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px) saturate(130%);
  -webkit-backdrop-filter: blur(18px) saturate(130%);
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 40px), var(--max-width));
  min-height: 72px;
  margin-inline: auto;
}

.brand {
  display: inline-flex;
  gap: 11px;
  align-items: center;
  color: var(--white);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: block;
  width: 31px;
  height: 25px;
}

.brand-mark i {
  position: absolute;
  display: block;
  width: 12px;
  height: 7px;
  border-radius: 50%;
  transform: rotate(-22deg);
}

.brand-mark i:nth-child(1) { top: 2px; left: 3px; background: var(--cyan); }
.brand-mark i:nth-child(2) { top: 1px; right: 1px; background: var(--violet); transform: rotate(24deg); }
.brand-mark i:nth-child(3) { top: 10px; left: 10px; background: var(--white); }
.brand-mark i:nth-child(4) { bottom: 1px; left: 1px; background: var(--mint); transform: rotate(18deg); }
.brand-mark i:nth-child(5) { right: 2px; bottom: 2px; background: var(--orange); }

.site-nav {
  display: flex;
  gap: 8px;
  align-items: center;
}

.site-nav a {
  padding: 9px 13px;
  color: rgba(255, 255, 255, 0.72);
  border-radius: 10px;
  font-size: 0.9rem;
  font-weight: 650;
  text-decoration: none;
  transition: color 160ms ease, background 160ms ease;
}

.site-nav a:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.07);
}

.site-nav .nav-paper {
  margin-left: 8px;
  color: var(--navy);
  background: var(--white);
}

.site-nav .nav-paper:hover {
  color: var(--navy);
  background: var(--cyan);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 11px;
  color: var(--white);
  background: transparent;
  border: 0;
  border-radius: 10px;
}

.menu-toggle span:not(.sr-only) {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px 0;
  background: currentColor;
  border-radius: 2px;
  transition: transform 180ms ease, opacity 180ms ease;
}

.hero {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  color: var(--white);
  background:
    radial-gradient(circle at 50% 0%, rgba(28, 88, 137, 0.34), transparent 43%),
    linear-gradient(155deg, #07111f 0%, #091827 58%, #07111f 100%);
}

.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.17;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 76%);
}

.hero-glow {
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.13;
  pointer-events: none;
}

.hero-glow-a {
  top: 90px;
  left: -140px;
  background: var(--cyan);
}

.hero-glow-b {
  top: 240px;
  right: -170px;
  background: var(--violet);
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 150px;
  padding-bottom: 90px;
  text-align: center;
}

.eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--cyan-deep);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero .eyebrow {
  padding: 8px 13px;
  color: #b9ecff;
  background: rgba(87, 215, 255, 0.08);
  border: 1px solid rgba(87, 215, 255, 0.2);
  border-radius: 999px;
}

.eyebrow-dot {
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(109, 242, 179, 0.8);
}

.hero h1 {
  display: flex;
  flex-direction: column;
  max-width: 1000px;
  margin: 25px auto 24px;
  font-size: clamp(2.6rem, 6.2vw, 5.8rem);
  font-weight: 780;
  line-height: 0.99;
  letter-spacing: -0.064em;
}

.hero h1 span:not(.title-accent) {
  font-size: 0.68em;
  line-height: 1.18;
  letter-spacing: -0.05em;
}

.title-accent {
  margin-bottom: 13px;
  color: transparent;
  background: linear-gradient(100deg, #ffffff 4%, #8fe6ff 48%, #b8aaff 92%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-summary {
  max-width: 780px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.7);
  font-size: clamp(1rem, 1.7vw, 1.25rem);
  line-height: 1.65;
}

.hero-summary em {
  color: var(--white);
  font-family: Georgia, serif;
}

.authors {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 22px;
  justify-content: center;
  margin-top: 30px;
}

.authors a {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 680;
  text-decoration-color: rgba(87, 215, 255, 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.authors a:hover {
  color: var(--cyan);
}

sup {
  font-size: 0.62em;
}

.affiliations {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  justify-content: center;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.82rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  gap: 9px;
  align-items: center;
  min-height: 50px;
  padding: 0 19px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 13px;
  font-size: 0.92rem;
  font-weight: 750;
  text-decoration: none;
}

.button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.button-primary {
  color: var(--navy);
  background: var(--white);
  border-color: var(--white);
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.2);
  transition: transform 160ms ease, background 160ms ease;
}

.button-primary:hover {
  background: var(--cyan);
  transform: translateY(-2px);
}

.button-muted {
  color: rgba(255, 255, 255, 0.58);
  background: rgba(255, 255, 255, 0.045);
  cursor: default;
}

.hero-visual {
  width: min(100%, 1090px);
  margin: 62px auto 0;
}

.media-frame {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  overflow: hidden;
  color: inherit;
  background: var(--white);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 17px;
  cursor: zoom-in;
  box-shadow: var(--shadow);
}

.hero-visual .media-frame {
  padding: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.media-frame img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  transition: transform 380ms cubic-bezier(.2, .7, .2, 1);
}

.media-frame:hover img {
  transform: scale(1.012);
}

.expand-hint {
  position: absolute;
  right: 15px;
  bottom: 15px;
  display: inline-flex;
  gap: 7px;
  align-items: center;
  padding: 7px 10px;
  color: var(--white);
  background: rgba(7, 17, 31, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 9px;
  font-size: 0.72rem;
  font-weight: 750;
  opacity: 0;
  transform: translateY(5px);
  transition: opacity 160ms ease, transform 160ms ease;
  backdrop-filter: blur(10px);
}

.media-frame:hover .expand-hint,
.media-frame:focus-visible .expand-hint {
  opacity: 1;
  transform: translateY(0);
}

.hero-visual > p {
  max-width: 710px;
  margin: 16px auto 0;
  color: rgba(255, 255, 255, 0.48);
  font-size: 0.82rem;
}

.section {
  padding: 112px 0;
}

.section-light {
  background: var(--white);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 52px;
}

.section-heading h2,
.render-copy h2,
.citation-copy h2 {
  margin: 10px 0 17px;
  font-size: clamp(2rem, 4.5vw, 4rem);
  font-weight: 760;
  line-height: 1.06;
  letter-spacing: -0.052em;
}

.section-heading p,
.render-copy > p,
.citation-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: 1.07rem;
}

.transfer-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 18px;
  align-items: stretch;
}

.flow-node {
  position: relative;
  min-height: 260px;
  padding: 28px;
  overflow: hidden;
  background: #f7f9fc;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.flow-node-featured {
  background: linear-gradient(160deg, #eefbff 0%, #f4f1ff 100%);
  border-color: rgba(87, 215, 255, 0.52);
  box-shadow: 0 20px 50px rgba(52, 129, 165, 0.12);
}

.flow-number {
  position: absolute;
  top: 22px;
  right: 24px;
  color: #a9b5c5;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.75rem;
  font-weight: 800;
}

.flow-node h3,
.value-card h3,
.mode-card h3,
.gallery-copy h3 {
  margin: 18px 0 8px;
  font-size: 1.15rem;
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.flow-node p,
.value-card p,
.mode-card > p,
.gallery-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 0.93rem;
}

.flow-arrow {
  align-self: center;
  color: #9aa8ba;
  font-size: 1.6rem;
}

.flow-icon,
.gaussian-cluster {
  position: relative;
  width: 94px;
  height: 78px;
  margin-top: 13px;
}

.image-icon {
  border: 2px solid #a8bdd3;
  border-radius: 10px;
}

.image-icon::before {
  content: "";
  position: absolute;
  right: 12px;
  bottom: 11px;
  left: 12px;
  height: 33px;
  background: linear-gradient(145deg, transparent 47%, #a8bdd3 49% 53%, transparent 55%), linear-gradient(45deg, #dbe8f3 0 50%, transparent 51%);
}

.image-icon::after {
  content: "";
  position: absolute;
  top: 13px;
  right: 16px;
  width: 11px;
  height: 11px;
  background: var(--orange);
  border-radius: 50%;
}

.image-icon i {
  position: absolute;
  bottom: 16px;
  display: block;
  width: 15px;
  height: 9px;
  background: var(--mint);
  border-radius: 50%;
}

.image-icon i:nth-child(1) { left: 17px; }
.image-icon i:nth-child(2) { left: 38px; background: var(--violet); }
.image-icon i:nth-child(3) { left: 58px; background: var(--cyan); }

.gaussian-cluster i {
  position: absolute;
  display: block;
  width: 38px;
  height: 20px;
  border-radius: 50%;
  filter: drop-shadow(0 5px 5px rgba(16, 40, 68, 0.1));
}

.gaussian-cluster i:nth-child(1) { top: 7px; left: 3px; background: rgba(87, 215, 255, 0.8); transform: rotate(-20deg); }
.gaussian-cluster i:nth-child(2) { top: 2px; right: 5px; background: rgba(155, 135, 255, 0.78); transform: rotate(18deg); }
.gaussian-cluster i:nth-child(3) { top: 28px; left: 25px; background: rgba(109, 242, 179, 0.9); transform: rotate(-7deg); }
.gaussian-cluster i:nth-child(4) { bottom: 4px; left: 1px; background: rgba(255, 179, 92, 0.84); transform: rotate(14deg); }
.gaussian-cluster i:nth-child(5) { right: 2px; bottom: 8px; background: rgba(87, 215, 255, 0.66); transform: rotate(-18deg); }
.gaussian-cluster i:nth-child(6) { top: 29px; right: 1px; width: 25px; background: rgba(255, 126, 151, 0.7); }

.cube-icon i,
.cube-icon::before,
.cube-icon::after {
  position: absolute;
  content: "";
  display: block;
  width: 47px;
  height: 47px;
  border: 2px solid #9eb0c4;
}

.cube-icon i {
  top: 15px;
  left: 20px;
  transform: rotate(30deg) skew(-5deg, -5deg);
  border-color: var(--violet);
  background: rgba(155, 135, 255, 0.06);
}

.cube-icon::before {
  top: 8px;
  left: 34px;
  transform: rotate(30deg) skew(-5deg, -5deg);
  border-color: rgba(87, 215, 255, 0.75);
}

.cube-icon::after {
  top: 23px;
  left: 34px;
  transform: rotate(30deg) skew(-5deg, -5deg);
  border-color: rgba(109, 242, 179, 0.65);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 22px;
}

.value-card {
  padding: 25px 26px;
  border-top: 1px solid var(--line);
}

.value-symbol {
  color: var(--cyan-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.83rem;
  font-weight: 800;
}

.section-dark {
  position: relative;
  color: var(--white);
  background:
    radial-gradient(circle at 82% 20%, rgba(155, 135, 255, 0.12), transparent 32%),
    radial-gradient(circle at 14% 80%, rgba(87, 215, 255, 0.09), transparent 30%),
    var(--navy);
}

.section-heading-dark p {
  color: rgba(255, 255, 255, 0.6);
}

.section-heading-dark .kicker {
  color: var(--cyan);
}

.mode-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.mode-card {
  position: relative;
  padding: 34px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: var(--radius);
}

.mode-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 3px;
  content: "";
}

.mode-blue::before { background: linear-gradient(90deg, var(--cyan), transparent 80%); }
.mode-violet::before { background: linear-gradient(90deg, var(--violet), transparent 80%); }

.mode-topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}

.mode-tag {
  padding: 5px 9px;
  color: var(--navy);
  background: var(--cyan);
  border-radius: 7px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.mode-violet .mode-tag {
  background: var(--violet);
}

.mode-output {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.76rem;
  font-weight: 700;
}

.mode-card h3 {
  margin-top: 23px;
  font-size: 1.45rem;
}

.mode-card > p,
.mode-card li {
  color: rgba(255, 255, 255, 0.62);
}

.mode-card ul {
  display: grid;
  gap: 9px;
  margin: 25px 0;
  padding: 0;
  list-style: none;
}

.mode-card li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
}

.mode-card li::before {
  position: absolute;
  top: 0.65em;
  left: 0;
  width: 7px;
  height: 7px;
  content: "";
  background: var(--cyan);
  border-radius: 50%;
}

.mode-violet li::before {
  background: var(--violet);
}

.mode-equation {
  padding: 14px 16px;
  overflow-x: auto;
  color: rgba(255, 255, 255, 0.78);
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 11px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.76rem;
  white-space: nowrap;
}

.mode-equation span {
  padding-inline: 8px;
  color: var(--mint);
}

.interface-strip {
  display: grid;
  grid-template-columns: 1fr 70px auto 70px 1fr;
  gap: 17px;
  align-items: center;
  margin-top: 24px;
  padding: 20px 26px;
  color: rgba(255, 255, 255, 0.54);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 15px;
  font-size: 0.82rem;
  text-align: center;
}

.interface-strip strong {
  color: var(--white);
  font-size: 0.9rem;
}

.interface-strip i {
  position: relative;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(87, 215, 255, 0.7), transparent);
}

.section-results {
  background: #f4f7fb;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-bottom: 68px;
}

.metric-card {
  position: relative;
  padding: 25px;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 17px;
  box-shadow: 0 14px 40px rgba(31, 64, 99, 0.06);
}

.metric-card::after {
  position: absolute;
  right: -35px;
  bottom: -55px;
  width: 120px;
  height: 120px;
  content: "";
  background: radial-gradient(circle, rgba(87, 215, 255, 0.16), transparent 70%);
  border-radius: 50%;
}

.metric-value {
  display: inline-block;
  margin-right: 7px;
  color: var(--ink);
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 820;
  line-height: 1;
  letter-spacing: -0.055em;
}

.metric-value small {
  font-size: 0.45em;
  letter-spacing: 0;
}

.metric-label {
  color: var(--cyan-deep);
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.metric-card strong,
.metric-card p {
  display: block;
}

.metric-card strong {
  margin-top: 15px;
  font-size: 0.86rem;
}

.metric-card p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.gallery-item {
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: 0 16px 45px rgba(24, 58, 92, 0.06);
}

.gallery-wide {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(240px, 0.34fr) minmax(0, 1fr);
  gap: 28px;
  align-items: center;
}

.gallery-index {
  color: var(--cyan-deep);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.gallery-copy h3 {
  margin-top: 10px;
  font-size: 1.3rem;
}

.gallery .media-frame {
  margin-top: auto;
  background: #eef2f6;
  border-color: #d6dee8;
  border-radius: 13px;
  box-shadow: none;
}

.section-render {
  color: var(--white);
  background: linear-gradient(120deg, #0b1b2e, #111b33 68%, #17152f);
}

.render-grid {
  display: grid;
  grid-template-columns: 0.42fr 0.58fr;
  gap: 58px;
  align-items: center;
}

.render-copy .kicker {
  color: var(--mint);
}

.render-copy > p {
  color: rgba(255, 255, 255, 0.62);
}

.render-points {
  display: grid;
  gap: 10px;
  margin-top: 27px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.88rem;
}

.render-points span {
  display: flex;
  gap: 10px;
  align-items: center;
}

.render-points i {
  width: 7px;
  height: 7px;
  background: var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(109, 242, 179, 0.5);
}

.render-media {
  padding: 8px;
  background: var(--white);
}

.section-citation {
  background: var(--white);
}

.citation-grid {
  display: grid;
  grid-template-columns: 0.35fr 0.65fr;
  gap: 64px;
  align-items: center;
}

.citation-copy h2 {
  font-size: clamp(2.2rem, 4vw, 3.5rem);
}

.text-link {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  margin-top: 24px;
  color: #087ca3;
  font-weight: 780;
  text-decoration: none;
}

.text-link span {
  transition: transform 160ms ease;
}

.text-link:hover span {
  transform: translateX(4px);
}

.code-card {
  overflow: hidden;
  color: #dbe9f5;
  background: var(--navy);
  border: 1px solid #182b42;
  border-radius: 17px;
  box-shadow: 0 25px 70px rgba(10, 28, 51, 0.2);
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 48px;
  padding: 0 14px 0 19px;
  color: #8498ad;
  background: #0b1929;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.copy-button {
  display: inline-flex;
  gap: 7px;
  align-items: center;
  padding: 6px 9px;
  color: #aabaca;
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 7px;
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: none;
}

.copy-button:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.copy-button svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.code-card pre {
  margin: 0;
  padding: 26px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.75;
  tab-size: 2;
}

.site-footer {
  padding: 52px 0;
  color: rgba(255, 255, 255, 0.58);
  background: #050c15;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-inner {
  display: flex;
  gap: 30px;
  align-items: flex-end;
  justify-content: space-between;
}

.footer-brand {
  width: fit-content;
}

.footer-inner p {
  margin: 10px 0 0;
  font-size: 0.82rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--cyan);
}

.lightbox {
  width: min(95vw, 1500px);
  max-width: none;
  max-height: 92vh;
  padding: 42px 16px 16px;
  overflow: auto;
  background: rgba(5, 12, 21, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 18px;
  box-shadow: 0 30px 110px rgba(0, 0, 0, 0.65);
}

.lightbox::backdrop {
  background: rgba(1, 5, 10, 0.82);
  backdrop-filter: blur(8px);
}

.lightbox img {
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: calc(92vh - 58px);
  margin: auto;
  border-radius: 8px;
}

.lightbox-close {
  position: absolute;
  top: 6px;
  right: 10px;
  width: 34px;
  height: 34px;
  padding: 0;
  color: rgba(255, 255, 255, 0.76);
  background: transparent;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-size: 1.7rem;
  line-height: 1;
}

.lightbox-close:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 620ms ease, transform 620ms cubic-bezier(.2, .75, .25, 1);
}

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

@media (max-width: 980px) {
  .transfer-flow {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    transform: rotate(90deg);
    justify-self: center;
    line-height: 1;
  }

  .flow-node {
    min-height: 230px;
  }

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

  .render-grid,
  .citation-grid {
    grid-template-columns: 1fr;
  }

  .render-copy {
    max-width: 720px;
  }

  .citation-grid {
    gap: 35px;
  }
}

@media (max-width: 760px) {
  .container,
  .nav-shell {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(2) {
    transform: translateY(6px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(3) {
    opacity: 0;
  }

  .menu-toggle[aria-expanded="true"] span:nth-of-type(4) {
    transform: translateY(-6px) rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    top: 72px;
    right: 12px;
    left: 12px;
    display: grid;
    gap: 4px;
    padding: 12px;
    visibility: hidden;
    background: rgba(8, 20, 34, 0.98);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 14px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 160ms ease, transform 160ms ease, visibility 160ms;
  }

  .site-nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
  }

  .site-nav a {
    padding: 12px 13px;
  }

  .site-nav .nav-paper {
    margin: 5px 0 0;
    text-align: center;
  }

  .hero-inner {
    padding-top: 126px;
    padding-bottom: 72px;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 14vw, 4.2rem);
  }

  .hero h1 span:not(.title-accent) {
    font-size: 0.52em;
    line-height: 1.24;
  }

  .authors {
    gap: 6px 16px;
  }

  .affiliations {
    display: grid;
  }

  .hero-visual {
    margin-top: 45px;
  }

  .section {
    padding: 80px 0;
  }

  .section-heading {
    margin-bottom: 38px;
  }

  .value-grid,
  .mode-grid,
  .gallery {
    grid-template-columns: 1fr;
  }

  .value-card {
    padding-inline: 4px;
  }

  .gallery-wide {
    grid-column: auto;
    display: flex;
  }

  .interface-strip {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .interface-strip i {
    width: 70px;
    margin-inline: auto;
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .metric-card {
    padding: 20px;
  }

  .render-grid {
    gap: 35px;
  }

  .footer-inner {
    display: grid;
    align-items: start;
  }
}

@media (max-width: 480px) {
  .hero-actions,
  .button {
    width: 100%;
  }

  .button {
    justify-content: center;
  }

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

  .mode-card,
  .gallery-item,
  .flow-node {
    padding: 23px;
  }

  .mode-topline {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .code-card pre {
    padding: 19px;
    font-size: 0.7rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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