:root {
  --space-indigo: #141b41;
  --dusk-blue: #2a4f86;
  --steel-blue: #3f82ca;
  --cornflower-blue: #6f9ceb;
  --baby-blue-ice: #98b9f2;
  --alice-blue: #dfeaf6;
  --periwinkle: #b6b5f7;
  --soft-periwinkle: #918ef4;
  --steel-purple: #7b5fc8;

  --bg: #f6fbff;
  --surface: #ffffff;
  --surface-alt: #f2f7ff;
  --text: #0b1d34;
  --muted: #647894;
  --accent: var(--steel-purple);
  --accent-strong: var(--steel-blue);
  --border: rgba(11, 29, 52, 0.06);
  --shadow: 0 20px 40px rgba(11, 29, 52, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: #ffffff;
  font-size: 88%;
}

body {
  margin: 0;
  font-family:
    Inter,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background: #ffffff;
  color: var(--text);
  min-height: 100vh;
}

a {
  display: inline-block;
  color: var(--accent-strong);
  text-decoration: none;
  transition:
    transform 0.15s ease,
    color 0.15s ease;
}

a:hover {
  color: var(--accent);
  transform: translateY(-1px);
}

img {
  max-width: 100%;
}

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

.hero-title {
  /* max-width: min(44ch, 100%); */
  max-width: 1200px;
  font-size: clamp(2.65rem, 3.75vw, 3.25rem) !important;
  line-height: 1.1 !important;
  margin-bottom: 1.65rem !important;
}

.container {
  max-width: min(1100px, calc(100vw - 3.8rem));
  margin: 0 auto;
  padding: 0 clamp(3.45rem, 6.2vw, 5.25rem) 4rem clamp(3.45rem, 6.2vw, 5.25rem);
  background: #ffffff;
}

.toc-sidebar {
  position: static;
  align-self: start;
  width: 100%;
  max-width: 190px;
  display: none;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.95rem;
  background: rgba(252, 254, 255, 0.9);
  box-shadow: 0 6px 16px rgba(11, 29, 52, 0.05);
  backdrop-filter: blur(4px);
}

.toc-title {
  margin: 0 0 0.2rem;
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 700;
}

.toc-link {
  display: block;
  border-radius: 0.6rem;
  padding: 0.38rem 0.48rem;
  font-size: 0.82rem;
  font-weight: 550;
  color: var(--dusk-blue);
  transition:
    background 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.toc-link.toc-subsection {
  margin-left: 0.5rem;
  padding-left: 0.64rem;
  border-left: 2px solid rgba(63, 130, 202, 0.2);
  font-size: 0.76rem;
  font-weight: 500;
  color: color-mix(in srgb, var(--dusk-blue), white 12%);
}

.toc-link:hover {
  background: rgba(111, 156, 235, 0.14);
  color: var(--steel-purple);
  transform: translateX(1px);
}

.toc-link.active {
  background: rgba(63, 130, 202, 0.15);
  color: var(--space-indigo);
}

.toc-link.toc-subsection.active {
  border-left-color: var(--steel-blue);
}

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: start;
  padding: 4rem 0 3rem;
}

.hero-copy h1 {
  font-size: inherit;
  line-height: 1.08;
  margin: 0 0 1rem 0;
  letter-spacing: -0.04em;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  color: var(--muted);
  font-size: 0.96rem;
  margin-top: 1rem;
}

.hero-meta > span:first-child {
  font-size: 1rem;
}

.hero-meta > span:last-child {
  font-size: 0.97rem;
}

.hero-tldr {
  /* margin-top: 1.35rem; */
  padding: 1rem 1.1rem;
  border: 1px solid var(--border);
  border-radius: 0.95rem;
  background: rgba(252, 254, 255, 0.9);
}

.hero-tldr h2 {
  margin: 0 0 0.55rem;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.hero-tldr ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.hero-tldr li {
  margin-bottom: 0.4rem;
  line-height: 1.5;
}

.hero-proof-points {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.95rem;
}

.proof-pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--dusk-blue);
  background: rgba(111, 156, 235, 0.12);
  border: 1px solid rgba(63, 130, 202, 0.16);
}

.hero-impact {
  margin: 1rem 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: none;
  border-radius: 999px;
  padding: 0.84rem 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
  transition:
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}

.demo-btn-label {
  white-space: nowrap;
}

.demo-tight {
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--steel-blue), var(--steel-purple));
  color: white;
  box-shadow: 0 12px 30px rgba(79, 50, 130, 0.12);
}

.btn-primary:hover {
  transform: scale(1.01);
  color: var(--space-indigo);
  box-shadow: 0 18px 40px rgba(79, 50, 130, 0.14);
}

.btn-primary.iq-restart.restart {
  background: linear-gradient(135deg, #ff6a6a, #f49a4f, #e8b45f, #e9774f);
  box-shadow: 0 12px 30px rgba(232, 108, 79, 0.18);
}

.btn-primary.iq-restart.restart:hover {
  transform: scale(1.01);
  color: var(--space-indigo);
  box-shadow: 0 18px 40px rgba(232, 108, 79, 0.22);
}

.btn-primary::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 35%,
    rgba(255, 255, 255, 0.18),
    transparent 65%
  );
  transform: translateX(-120%);
  animation: glimmer 5s ease-in-out 1;
  pointer-events: none;
}

@keyframes glimmer {
  0% {
    transform: translateX(-120%);
  }

  50% {
    transform: translateX(120%);
  }

  100% {
    transform: translateX(120%);
  }
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.btn-secondary:hover {
  transform: translateY(-1px);
  background: rgba(255, 255, 255, 0.12);
  color: var(--accent);
}

.paper-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}

.paper-card h2 {
  text-align: center;
}

.paper-card p {
  text-align: justify;
}

.main-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.main-figure-card {
  cursor: default;
}

.abstract-reveal {
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  margin-top: 0;
  transition:
    max-height 0.55s ease,
    opacity 0.45s ease 0.08s,
    margin-top 0.45s ease;
}

.abstract-reveal h2 {
  text-align: left;
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.abstract-reveal p {
  text-align: justify;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
  margin: 0;
}

.main-figure-card:hover .abstract-reveal {
  max-height: 600px;
  opacity: 1;
  margin-top: 1.25rem;
}

h1,
h2 {
  color: var(--text);
}

h3 {
  color: var(--dusk-blue);
}

.paper-card p {
  color: var(--text);
  line-height: 1.6;
}

.paper-card h2 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--text);
}

.paper-card p,
.paper-card li {
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.75;
}

.paper-card ul {
  margin: 1.25rem 0 0 1.25rem;
  padding: 0;
  list-style: disc;
}

.paper-card li {
  margin-bottom: 0.75rem;
}

.section {
  padding: 3rem 0;
}

.section-gallery {
  padding-bottom: 2rem;
}

.section-header {
  margin-bottom: 0rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 2.75rem);
  letter-spacing: -0.04em;
}

.section-header p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  max-width: 70ch;
  line-height: 1.75;
}

.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-3 {
  grid-template-columns: 1fr;
}

.animated-word {
  font-weight: 700;
  background: linear-gradient(
    90deg,
    var(--steel-purple),
    var(--steel-blue),
    var(--cornflower-blue),
    var(--dusk-blue),
    var(--steel-purple)
  );
  background-size: 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: animatedGradientText 5s linear infinite;
}

.animated-arrow {
  font-weight: 700;
  background: linear-gradient(
    90deg,
    var(--steel-purple),
    var(--steel-blue),
    var(--cornflower-blue),
    var(--dusk-blue),
    var(--steel-purple)
  );
  background-size: 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: animatedGradientText 5s linear infinite reverse;
}

.animated-word-alt {
  font-weight: 700;
  background: linear-gradient(
    90deg,
    #ff6a6a,
    #f49a4f,
    #e8b45f,
    #e9774f,
    #ff6a6a
  );
  background-size: 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: animatedGradientText 5s linear infinite;
}

@keyframes animatedGradientText {
  0% {
    background-position: 0%;
  }
  100% {
    background-position: 300%;
  }
}

.feature-card,
.detail-box,
.cta-card,
.gallery-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem;
  border-radius: 24px;
  box-shadow: 0 28px 80px rgba(4, 11, 27, 0.12);
}

.feature-card h3,
.detail-box h3 {
  margin-top: 0;
  color: var(--dusk-blue);
}

.cta-card h2 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.feature-card p,
.detail-box p,
.cta-card p {
  margin: 0;
  margin-top: 0;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.75;
}

.feature-card {
  position: relative;
  padding: 2rem;
  border-radius: 1.25rem;
  background: #fff;
  border: 0px solid rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition:
    transform 0.5s ease,
    box-shadow 0.5s ease,
    max-height 0.5s ease;
}

.feature-figure {
  width: 100%;
  margin-top: 0;
  border-radius: 0.75rem;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  height: 0;
  margin-bottom: 0;
  overflow: hidden;
  transition:
    opacity 0.5s ease 0.1s,
    height 0.5s ease 0.1s,
    margin 0.5s ease 0.1s;
}

.feature-figure[data-figure="cxr7-1m"] {
  background-image: url("/assets/images/cxr7-1m_stats.svg");
}

.feature-figure[data-figure="causal-model"] {
  background-image: url("/assets/images/causal_graph.svg");
}

.feature-figure[data-figure="foundation-model-1"] {
  background-image: url("/assets/images/vae.svg");
}

.feature-figure[data-figure="foundation-model-2"] {
  background-image: url("/assets/images/models.svg");
}

.feature-figure[data-figure="foundation-model-3"] {
  background-image: url("/assets/images/fdd_table.svg");
}

.feature-figure[data-figure="synthetic-radiographs"] {
  background-image: url("/assets/images/ab_test_results.svg");
}

.feature-card .figure-caption {
  margin-top: 0;
  font-size: 0.875rem;
  color: var(--muted);
  text-align: center;
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition:
    opacity 0.5s ease 0.1s,
    max-height 0.5s ease 0.1s;
}

.feature-figures-stack {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 0;
  margin-bottom: 0;
  max-height: 0;
  overflow: hidden;
  transition:
    gap 0.5s ease,
    margin-top 0.5s ease,
    max-height 0.5s ease;
}

.feature-card:hover .feature-figures-stack {
  gap: 1.5rem;
  margin-top: 1rem;
  max-height: 2000px;
}

.feature-card.is-expanded .feature-figures-stack {
  gap: 1.5rem;
  margin-top: 1rem;
  max-height: 2000px;
}

.figure-item {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.feature-card:hover .figure-item {
  gap: 0.5rem;
}

.figure-item .figure-caption {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition:
    opacity 0.5s ease 0.1s,
    max-height 0.5s ease 0.1s;
}

.figure-item .feature-figure {
  opacity: 0;
  height: 0;
  margin-top: 0;
  transition:
    height 0.5s ease 0.1s,
    opacity 0.5s ease 0.1s;
}

.editing-carousel {
  margin-top: 0;
  opacity: 0;
  height: 0;
  max-height: none;
  overflow: hidden;
  transition:
    opacity 0.8s ease 0.12s,
    height 0.8s ease 0.12s,
    margin-top 0.8s ease 0.12s;
}

.feature-card:hover .editing-carousel {
  opacity: 1;
  height: 475px;
  margin-top: 1rem;
}

.feature-card.is-expanded .editing-carousel {
  opacity: 1;
  height: 475px;
  margin-top: 1rem;
}

.editing-carousel .viewer-container,
.editing-carousel .viewer-image-wrapper {
  min-height: 475px;
  max-height: 475px;
}

.editing-carousel .viewer-controls,
.synthetic-radiographs-viewer .viewer-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: -2rem;
  /* margin-bottom: 0.35rem; */
  padding-bottom: 0;
}

.editing-image {
  width: 100%;
  max-height: 100%;
  border-radius: 0.75rem;
  background: transparent;
  padding: 0;
  box-shadow: none;
  object-fit: cover;
  transition: opacity 0.45s ease;
}

.editing-image-caption {
  margin-top: 0.85rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--dusk-blue);
  line-height: 1.4;
  background: rgba(124, 156, 255, 0.14);
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  margin-left: auto;
  margin-right: auto;
  transition:
    opacity 0.45s ease,
    transform 0.45s ease;
}

.editing-image-caption .editing-arrow {
  background: linear-gradient(
    90deg,
    var(--steel-purple),
    var(--steel-blue),
    var(--cornflower-blue),
    var(--dusk-blue),
    var(--steel-purple)
  );
  background-size: 300%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.iq-challenge {
  margin: 0 0 0.4rem;
  color: var(--dusk-blue);
  font-weight: 600;
  line-height: 1.4;
}

.feature-card:hover {
  transform: translateY(-2px) scale(1);
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.08),
    0 0 14px rgba(80, 120, 255, 0.12);
}

.feature-card.is-expanded {
  transform: translateY(-2px) scale(1);
  box-shadow:
    0 12px 28px rgba(0, 0, 0, 0.08),
    0 0 14px rgba(80, 120, 255, 0.12);
}

.feature-card:hover .feature-figure {
  opacity: 1;
  height: 350px;
  margin-top: 1rem;
  margin-bottom: 0;
}

.feature-card.is-expanded .feature-figure {
  opacity: 1;
  height: 350px;
  margin-top: 1rem;
  margin-bottom: 0;
}

.feature-card:hover .figure-item .feature-figure {
  height: 250px;
  opacity: 1;
  margin-top: 0;
}

.feature-card.is-expanded .figure-item .feature-figure {
  height: 250px;
  opacity: 1;
  margin-top: 0;
}

.feature-card:hover .figure-item .figure-caption {
  opacity: 1;
  max-height: 100px;
}

.feature-card.is-expanded .figure-item .figure-caption {
  opacity: 1;
  max-height: 100px;
}

.feature-card:hover .feature-figures-stack {
  gap: 1.5rem;
  margin-top: 1rem;
}

.feature-card.is-expanded .feature-figures-stack {
  gap: 1.5rem;
  margin-top: 1rem;
}

.feature-card:hover .feature-figure[data-figure="cxr7-1m"] {
  height: 700px;
}

.feature-card.is-expanded .feature-figure[data-figure="cxr7-1m"] {
  height: 700px;
}

.feature-card:hover .feature-figure[data-figure="causal-model"] {
  height: 400px;
}

.feature-card.is-expanded .feature-figure[data-figure="causal-model"] {
  height: 400px;
}

.feature-card:hover .feature-figure[data-figure="synthetic-radiographs"] {
  height: 260px;
}

.feature-card.is-expanded .feature-figure[data-figure="synthetic-radiographs"] {
  height: 260px;
}

.feature-card:hover .feature-figure[data-figure="foundation-model-3"] {
  height: 475px;
}

.feature-card.is-expanded .feature-figure[data-figure="foundation-model-3"] {
  height: 475px;
}

.feature-card:hover .figure-caption {
  opacity: 1;
  max-height: 50px;
}

.feature-card.is-expanded .figure-caption {
  opacity: 1;
  max-height: 50px;
}

@keyframes animatedGradientBorder {
  0% {
    background-position: 0%;
  }
  100% {
    background-position: 300%;
  }
}

@keyframes pulsingGlow {
  0%,
  100% {
    opacity: 0.2;
  }
  50% {
    opacity: 0.7;
  }
}

.details-grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: 1fr;
}

.section-gallery .gallery-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 1fr);
  gap: 1.25rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.22) transparent;
}

.section-gallery .gallery-track::-webkit-scrollbar {
  height: 10px;
}

.section-gallery .gallery-track::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
  border-radius: 999px;
}

.gallery-card {
  scroll-snap-align: start;
  min-width: 280px;
  overflow: hidden;
  transition:
    transform 0.2s ease,
    border-color 0.2s ease;
}

.gallery-card:hover {
  transform: translateY(-4px);
  border-color: rgba(111, 156, 235, 0.35);
}

.gallery-image {
  min-height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
}

.gallery-image::after {
  content: attr(data-label);
  position: absolute;
  left: 1rem;
  bottom: 1rem;
  background: rgba(20, 27, 65, 0.85);
  color: white;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.82rem;
}

.gallery-copy {
  padding: 1.5rem;
}

.gallery-copy h3 {
  margin: 0 0 0.75rem;
  color: white;
}

.gallery-copy p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
}

.detail-box a {
  color: var(--accent);
}

.section-about {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-cta {
  display: flex;
  justify-content: center;
}

.cta-card {
  max-width: 780px;
  text-align: center;
}

.cta-card a {
  margin-top: 1.5rem;
}

.synthetic-radiographs-viewer {
  width: 100%;
  margin-top: 0;
  opacity: 0;
  height: 0;
  overflow: hidden;
  transition:
    opacity 0.8s ease 0.12s,
    height 0.8s ease 0.12s,
    margin-top 0.8s ease 0.12s;
}

.feature-card:hover .synthetic-radiographs-viewer {
  opacity: 1;
  height: 475px;
  margin-top: 2rem;
  margin-bottom: 0;
}

.feature-card.is-expanded .synthetic-radiographs-viewer {
  opacity: 1;
  height: 475px;
  margin-top: 2rem;
  margin-bottom: 0;
}

.synthetic-radiographs-viewer .viewer-container,
.synthetic-radiographs-viewer .viewer-image-wrapper {
  min-height: 475px;
  max-height: 475px;
}

.viewer-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: transparent;
  border-radius: 0.75rem;
  padding: 0.25rem 0;
}

.viewer-image-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  width: 100%;
  margin: 0 2rem;
}

.viewer-image-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  background: transparent;
  border-radius: 0.75rem;
  padding: 0;
  min-height: 520px;
  max-height: 720px;
  overflow: hidden;
}

.viewer-image-wrapper img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0.75rem;
  box-shadow: none;
}

.viewer-btn {
  position: absolute;
  top: 45%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border: none;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--steel-blue), var(--steel-purple));
  color: white;
  cursor: pointer;
  font-size: 1.1rem;
  transition:
    opacity 0.2s ease,
    transform 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
  opacity: 0;
  z-index: 10;
}

.feature-card:hover .viewer-btn {
  opacity: 1;
  animation: viewer-btn-fade 4s ease 1.6s;
}

.feature-card.is-expanded .viewer-btn {
  opacity: 1;
  animation: viewer-btn-fade 4s ease 1.6s;
}

.viewer-container:hover .viewer-btn {
  opacity: 1;
  animation: none;
}

.viewer-btn:hover {
  transform: translateY(-50%) scale(1.05);
}

.viewer-btn:active {
  transform: translateY(-50%) scale(0.96);
}

.viewer-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@keyframes viewer-btn-fade {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
  }
}

.viewer-btn-prev {
  left: 0.75rem;
}

.viewer-btn-next {
  right: 0.75rem;
}

.viewer-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.5rem;
}

.viewer-dots {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .viewer-image-row {
    grid-template-columns: 1fr;
    margin: 0 1rem;
  }

  .viewer-image-wrapper {
    min-height: 360px;
    max-height: none;
  }
}

.viewer-dot {
  width: 12px;
  height: 12px;
  border-radius: 999px;
  background: var(--alice-blue);
  transition:
    transform 0.2s ease,
    background 0.2s ease,
    opacity 0.2s ease;
}

.viewer-dot.active {
  background: var(--steel-blue);
  border-color: var(--steel-blue);
  transform: scale(1.2);
}

.takeaways-card {
  margin-top: 2rem;
  background: linear-gradient(180deg, #f5faff 0%, #edf6ff 100%);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.3rem 1.35rem;
  box-shadow: 0 14px 30px rgba(11, 29, 52, 0.06);
}

.takeaways-card h2 {
  margin: 0 0 0.75rem;
  font-size: 1.2rem;
}

.takeaways-card ul {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--muted);
}

.takeaways-card li {
  margin-bottom: 0.45rem;
  line-height: 1.55;
}

footer.site-footer {
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--border);
  background: transparent;
  text-align: center;
}

.footer-logos {
  margin-bottom: 1.75rem;
}

.footer-logos .logos-grid {
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.5rem 2.5rem;
}

.footer-logos .logo-image {
  max-height: 52px;
  opacity: 0.85;
  filter: grayscale(20%);
  transition:
    opacity 0.2s ease,
    filter 0.2s ease;
}

.footer-logos .logo-image:hover {
  opacity: 1;
  filter: none;
}

.footer-logos .logo-item-chai .logo-image {
  max-height: 56px;
}

.footer-content {
  color: var(--muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.footer-disclaimer {
  width: 80%;
  margin: 0 auto 1rem;
  padding: 0 clamp(0rem, 3vw, 1.5rem);
}

.footer-disclaimer p {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: color-mix(in srgb, var(--muted), white 16%);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 0.75rem;
}

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

  .grid-3,
  .details-grid {
    grid-template-columns: 1fr;
  }

  .section-gallery .gallery-track {
    grid-auto-columns: minmax(260px, 1fr);
  }
}

@media (min-width: 1100px) {
  .container {
    max-width: min(1250px, calc(100vw - 3.3rem));
    width: 100%;
    display: grid;
    grid-template-columns: clamp(150px, 12vw, 190px) minmax(0, 1fr);
    column-gap: clamp(0.75rem, 1.6vw, 1.35rem);
    align-items: start;
    margin-left: max(
      0rem,
      calc((100vw - min(1260px, calc(100vw - 3.3rem))) / 2 - 5.5rem)
    );
    margin-right: auto;
    padding-left: clamp(0.25rem, 0.8vw, 0.75rem);
    padding-right: clamp(2.75rem, 3.8vw, 4rem);
  }

  .container > .hero {
    min-width: 0;
  }

  .toc-sidebar {
    display: flex;
    position: sticky;
    top: 13rem;
    width: 100%;
    max-width: none;
    max-height: calc(100vh - 9.5rem);
    overflow: auto;
  }

  .container > :not(.toc-sidebar) {
    grid-column: 2;
    min-width: 0;
  }
}

@media (max-width: 680px) {
  .container {
    padding: 0 1rem 3rem;
  }

  .hero-title {
    max-width: 100%;
    font-size: clamp(2.4rem, 9.5vw, 3.05rem) !important;
    line-height: 1.1 !important;
  }

  .hero-copy h1 {
    font-size: inherit;
  }

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

  .btn {
    width: 100%;
  }
}

.tooltip {
  position: relative;
  color: var(--steel-purple);
  overflow: hidden;
  justify-self: end;
  text-align: right;
  transform: translateY(45px) translateX(-15px);
  font-size: 0.85rem;
}

.tooltip::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    transparent 35%,
    rgba(255, 255, 255, 0.6),
    transparent 65%
  );
  transform: translateX(-120%);
  animation: glimmer 5s ease-in-out 1;
  pointer-events: none;
}

.feature-card {
  box-shadow:
    0 28px 80px rgba(4, 11, 27, 0.08),
    0 0 14px color-mix(in srgb, var(--steel-blue), transparent 84%),
    0 0 28px color-mix(in srgb, var(--steel-purple), transparent 88%);
}

.feature-card:hover {
  animation: none;

  box-shadow:
    0 12px 28px rgba(11, 29, 52, 0.08),
    0 0 22px color-mix(in srgb, var(--cornflower-blue), transparent 68%),
    0 0 42px color-mix(in srgb, var(--steel-purple), transparent 78%);
}

.feature-card.is-expanded {
  animation: none;

  box-shadow:
    0 12px 28px rgba(11, 29, 52, 0.08),
    0 0 22px color-mix(in srgb, var(--cornflower-blue), transparent 68%),
    0 0 42px color-mix(in srgb, var(--steel-purple), transparent 78%);
}

@keyframes cardPulse {
  0%,
  100% {
    box-shadow:
      0 28px 80px rgba(4, 11, 27, 0.08),
      0 0 10px color-mix(in srgb, var(--steel-blue), transparent 88%),
      0 0 20px color-mix(in srgb, var(--steel-purple), transparent 92%);
  }

  50% {
    box-shadow:
      0 28px 80px rgba(4, 11, 27, 0.08),
      0 0 24px color-mix(in srgb, var(--steel-blue), transparent 72%),
      0 0 48px color-mix(in srgb, var(--steel-purple), transparent 82%);
  }
}

.feature-card {
  position: relative;
  overflow: visible;
  border-radius: 1.25rem;
}

.feature-card::after {
  content: "";
  position: absolute;
  inset: -1px;
  padding: 2px;
  border-radius: inherit;
  background: linear-gradient(
    90deg,
    var(--steel-purple),
    var(--steel-blue),
    var(--cornflower-blue),
    var(--dusk-blue),
    var(--steel-purple)
  );
  background-size: 300%;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;

  -webkit-mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;

  mask:
    linear-gradient(#000 0 0) content-box,
    linear-gradient(#000 0 0);
  mask-composite: exclude;
}

.feature-card:hover::after {
  opacity: 0.85;
  animation: animatedGradientBorder 4s linear infinite;
}

.feature-card.is-expanded::after {
  opacity: 0.85;
  animation: animatedGradientBorder 4s linear infinite;
}

.feature-card[id],
.section-header[id] {
  scroll-margin-top: 6.5rem;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .feature-card:hover,
  .feature-card.is-expanded,
  .iq-choice:hover,
  .btn-primary:hover,
  .btn-primary.iq-restart.restart:hover,
  .viewer-btn:hover,
  a:hover {
    transform: none;
  }
}

@keyframes animatedGradientBorder {
  0% {
    background-position: 0%;
  }

  100% {
    background-position: 300%;
  }
}

.logos-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
  align-items: center;
}

.logo-item {
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-image {
  max-width: 100%;
  max-height: 80px;
  object-fit: contain;
}