:root {
  --bg: #f5f7fb;
  --bg-soft: #eef2f8;
  --card: #ffffff;
  --text: #10233c;
  --muted: #4b5f7c;
  --border: #d6deea;
  --accent: #006d77;
  --accent-strong: #00545b;
  --shadow: 0 12px 34px rgba(16, 35, 60, 0.09);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  --bg: #f5f7fb;
  --bg-soft: #eef2f8;
  --card: #ffffff;
  --text: #10233c;
  --muted: #4b5f7c;
  --border: #d6deea;
  --accent: #006d77;
  --accent-strong: #00545b;
  --shadow: 0 12px 34px rgba(16, 35, 60, 0.09);
  --radius: 18px;
  font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background: radial-gradient(circle at 0% 0%, #dce9ff 0%, var(--bg) 42%),
              linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
  line-height: 1.55;
}

h1,
h2,
h3 {
  font-family: "IBM Plex Serif", Georgia, serif;
  letter-spacing: -0.01em;
  margin: 0 0 0.5rem;
}

p {
  margin: 0;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.section {
  padding: 2.8rem 0;
}

.hero {
  padding: 6.5rem 0 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  inset: -30% -10% auto auto;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 109, 119, 0.28) 0%, rgba(0, 109, 119, 0) 70%);
  pointer-events: none;
}

.eyebrow {
  color: var(--accent-strong);
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.11em;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-top: 0.45rem;
}

.subtitle {
  margin-top: 0.8rem;
  max-width: 640px;
  color: var(--muted);
  font-size: clamp(1.02rem, 2.4vw, 1.34rem);
}

.authors {
  margin-top: 1rem;
  color: var(--muted);
  font-weight: 500;
}

.authors a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.button-row {
  margin-top: 1.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.two-column-section > * {
  min-width: 0;
}

.media-card,
.video-card,
.grid-item,
.column {
  min-width: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.62rem 1rem;
  text-decoration: none;
  border: 1px solid var(--border);
  color: var(--text);
  background: #fff;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: #a7bad6;
  box-shadow: 0 8px 18px rgba(16, 35, 60, 0.12);
}

.btn:focus-visible,
.nav-pill:focus-visible {
  outline: 2px solid #0f6f79;
  outline-offset: 2px;
}

.btn--primary {
  background: var(--accent);
  color: #fff;
  border-color: transparent;
}

.btn--primary:hover {
  background: var(--accent-strong);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.4rem;
}

.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(245, 247, 251, 0.84);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.top-nav__inner {
  min-height: 52px;
  display: flex;
  align-items: center;
  gap: 0.35rem 0.9rem;
  flex-wrap: wrap;
}

.nav-pill {
  appearance: none;
  border: 1px solid var(--border);
  background: #ffffff;
  color: #264a70;
  border-radius: 999px;
  padding: 0.34rem 0.72rem;
  font-size: 0.88rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.nav-pill:hover {
  transform: translateY(-1px);
  border-color: #a7bad6;
  box-shadow: 0 5px 14px rgba(16, 35, 60, 0.12);
}

.takeaways {
  margin-top: 0.95rem;
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.takeaway-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fbff;
  padding: 0.85rem;
}

.takeaway-card__value {
  font-weight: 800;
  font-size: 1.15rem;
  margin: 0;
}

.takeaway-card__label {
  margin-top: 0.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.idea-list {
  margin: 0.8rem 0 0;
  padding-left: 1.2rem;
}

.idea-list li + li {
  margin-top: 0.6rem;
}

.problem-block {
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
}

.problem-grid {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.idea-list--compact {
  margin-top: 0.35rem;
}

.idea-list--compact li,
.abstract-points li {
  color: var(--muted);
}

.abstract-points {
  margin: 0.35rem 0 0;
  padding-left: 1.2rem;
}

.abstract-points li + li {
  margin-top: 0.55rem;
}

.section-head p {
  color: var(--muted);
}

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

.result-card {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #fff;
  box-shadow: var(--shadow);
}

/* Guard against third-party style leakage (e.g., embedded apps) */
body .card,
body .result-card,
body .result-card__body,
body .quote-card,
body .takeaway-card,
body .aff-card {
  background: #ffffff !important;
  border-color: #d6deea !important;
}

body .result-card h3,
body .result-card__body h3,
body .card h2,
body .card h3,
body .quote-card,
body .aff-card,
body .takeaway-card__value {
  color: #10233c !important;
}

body .result-card p,
body .result-card__body p,
body .quote-note,
body .authors-note,
body .takeaway-card__label,
body .idea-list--compact li,
body .abstract-points li {
  color: #4b5f7c !important;
}

.result-card img {
  width: 100%;
  height: auto;
  display: block;
  background: var(--bg-soft);
}

.result-card__body {
  padding: 1rem;
}

.result-card p {
  color: var(--muted);
}

.result-tip {
  margin-top: 0.45rem;
  font-size: 0.9rem;
}

.qualitative-block {
  margin-top: 1.15rem;
  padding: 1.2rem;
  background: linear-gradient(180deg, #ffffff 0%, #f7fbff 100%);
}

.qualitative-intro {
  color: var(--muted);
  margin-bottom: 0.9rem;
  max-width: 86ch;
}

.qualitative-grid {
  display: grid;
  gap: 0.95rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.problem-examples {
  margin-top: 0.95rem;
}

.quote-card {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: linear-gradient(180deg, #ffffff 0%, #f2f8ff 100%);
  padding: 0.95rem;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.quote-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(16, 35, 60, 0.1);
}

.quote-label {
  margin: 0 0 0.45rem;
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #33547d;
  background: #e8f1ff;
  border: 1px solid #cdddf5;
  border-radius: 999px;
  padding: 0.2rem 0.55rem;
}

.quote-text {
  margin: 0;
  color: var(--text);
  font-style: italic;
  position: relative;
  padding-left: 0.85rem;
}

.quote-text::before {
  content: "\201C";
  position: absolute;
  left: 0;
  top: -0.1rem;
  color: #5a79a1;
  font-size: 1.05rem;
  font-weight: 700;
}

.quote-note {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.93rem;
}

.pipeline {
  margin: 1.3rem auto 0;
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  align-items: stretch;
  width: min(100%, 1040px);
  padding: 0.25rem 0.35rem 0.1rem;
}

.step {
  position: relative;
  text-align: center;
  background: linear-gradient(180deg, #f9fcff 0%, #f0f5fd 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.95rem 0.8rem 0.9rem;
  min-height: 196px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

.step:not(:last-child)::after {
  content: "\2192";
  position: absolute;
  right: -0.82rem;
  top: 50%;
  transform: translate(100%, -50%);
  color: #61799e;
  font-size: 1.1rem;
  font-weight: 700;
}

.step__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  margin-bottom: 0.45rem;
  border-radius: 999px;
  background: #e6f0ff;
  color: #33547d;
  font-size: 0.74rem;
  font-weight: 700;
}

.step img {
  width: 30px;
  height: 30px;
  margin-bottom: 0.4rem;
}

.step h3 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.step p {
  color: var(--muted);
  font-size: 0.87rem;
}

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

.split > .card {
  min-width: 0;
}

.video-frame {
  margin-top: 0.85rem;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0d1723;
  width: 100%;
  min-width: 0;
}

.video-frame video {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: contain;
}

.demo-embed {
  margin: 0.85rem 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #ffffff;
  width: 100%;
  max-width: 100%;
  isolation: isolate;
}

.demo-embed gradio-app {
  display: block;
  width: 100% !important;
  max-width: 100% !important;
  min-width: 0 !important;
  min-height: 500px;
}

.demo-embed iframe,
.demo-embed video,
.demo-embed canvas {
  width: 100% !important;
  max-width: 100% !important;
}

.resources-grid {
  margin: 0.8rem 0 1rem;
  display: grid;
  gap: 0.55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.resource-link {
  display: block;
  text-decoration: none;
  color: var(--accent-strong);
  background: #f4f8ff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
  font-weight: 600;
}

.resource-link:hover {
  background: #eaf2ff;
}

.citation-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.citation-head h3 {
  margin: 0;
}

.final-cta {
  text-align: center;
}

.final-cta .button-row {
  justify-content: center;
}

.authors-note {
  margin-top: 0.35rem;
  color: var(--muted);
}

.affiliations-grid {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.aff-card {
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8fbff;
  padding: 0.9rem 0.95rem;
}

.aff-card h3 {
  margin-bottom: 0.45rem;
}

.aff-card ul,
.aff-card ol {
  margin: 0;
  padding-left: 1.1rem;
}

.aff-card li + li {
  margin-top: 0.35rem;
}

.aff-card li {
  color: var(--text);
}

.aff-card a {
  color: inherit;
}

.aff-tags {
  color: var(--muted);
}

.bibtex {
  margin: 0.5rem 0 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #0f1725;
  color: #d8e7ff;
  overflow-x: auto;
  padding: 0.9rem;
}

.footer {
  border-top: 1px solid var(--border);
  padding: 1.8rem 0 2.4rem;
  color: #5d7394;
}

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

@media (max-width: 1024px) {
  .pipeline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .step:not(:last-child)::after {
    display: none;
  }
}

@media (max-width: 860px) {
  .results-grid,
  .split,
  .resources-grid,
  .affiliations-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .hero {
    padding-top: 5rem;
  }

  .top-nav {
    position: static;
  }

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

  .step {
    min-height: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}