:root {
  --bg-gradient: linear-gradient(135deg, #0c0f1f, #1a2242 50%, #2b4473);
  --primary-accent: #f0821d;
  --secondary-accent: #6ddac8;
  --card-bg: #ffffff;
  --text-dark: #0f1221;
  --muted: #6b7280;
  --border-color: rgba(15, 18, 33, 0.08);
}

body {
  font-family: "Inter", "Space Grotesk", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--text-dark);
  background-color: #f7f8fc;
}

.hero-aline {
  background-image: var(--bg-gradient);
  color: #f9fbff;
}

.hero-aline .title {
  color: #ffffff;
  text-shadow: 0 10px 40px rgba(12, 15, 31, 0.4);
}

.hero-aline .subtitle {
  color: rgba(255, 255, 255, 0.88);
}

.hero-kicker {
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--secondary-accent);
  margin-bottom: 1rem;
}

.hero-intro .author-list,
.hero-intro .affiliation-list,
.hero-intro .cta-group {
  justify-content: center;
}

.title,
.subtitle {
  font-family: "Space Grotesk", "Inter", sans-serif;
}

.author-list,
.affiliation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
  font-size: 0.95rem;
  opacity: 0.85;
}

.cta-group {
  margin-top: 1.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-card {
  background: rgba(15, 18, 33, 0.85);
  padding: 2rem;
  border-radius: 18px;
  color: #fff;
  box-shadow: 0 15px 40px rgba(6, 8, 20, 0.45);
}

.hero-card__badge {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--secondary-accent);
}

.hero-card__graphic {
  margin: 1.5rem 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.layer {
  padding: 0.75rem;
  border-radius: 999px;
  text-align: center;
  font-size: 0.85rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.layer-transformer {
  grid-column: span 3;
  background: rgba(255, 255, 255, 0.15);
}

.hero-card__meta {
  display: flex;
  justify-content: space-between;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  opacity: 0.8;
}

.section {
  padding: 4rem 1.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.highlights {
  background: #ffffff;
}

.info-card {
  background: var(--card-bg);
  border-radius: 18px;
  padding: 2rem;
  height: 100%;
  border: 1px solid var(--border-color);
  box-shadow: 0 15px 35px rgba(15, 18, 33, 0.05);
}

.info-card__icon {
  font-size: 1.8rem;
  color: var(--primary-accent);
}

.intro {
  background: #f4f6ff;
}

.intro p {
  margin-bottom: 1.2rem;
  line-height: 1.75;
  color: var(--text-dark);
}

.intro-lead {
  font-size: 1.15rem;
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.intro-list {
  list-style: none;
  padding-left: 0;
  margin: 0.25rem 0 1.75rem;
}

.intro-list li {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.7;
}

.intro-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-accent);
}

.key-contrib {
  background: #0f1221;
  color: #f0f5ff;
  border-radius: 18px;
  padding: 1.75rem;
  box-shadow: 0 20px 45px rgba(10, 12, 23, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 2rem;
}

.key-contrib h3 {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 1rem;
  color: var(--secondary-accent);
  margin-bottom: 1.25rem;
}

.key-card {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 0.85rem;
  font-size: 1.2rem;
  line-height: 1.6;
}

.method-figure {
  margin-top: 2.5rem;
  text-align: center;
}

.method-figure img {
  max-width: 100%;
  border: none;
  box-shadow: none;
}

.method-figure figcaption {
  margin-top: 0.85rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.section-subtitle {
  color: var(--muted);
  max-width: 720px;
  margin: 0 auto 2.5rem;
  text-align: center;
}

.feature-list {
  list-style: none;
  padding-left: 0;
  margin: 1rem 0 1.5rem;
}

.feature-list li {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 1.15rem;
  line-height: 1.85;
}

.feature-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary-accent);
  font-size: 1.2rem;
}

.methodology {
  background: #ffffff;
}

.methodology p {
  font-size: 1.15rem;
  line-height: 1.85;
  margin-bottom: 1.25rem;
  color: var(--text-dark);
}

.methodology ul {
  font-size: 1.15rem;
  line-height: 1.85;
}

.methodology li {
  margin-bottom: 0.75rem;
}

.method-subsection-title {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-top: 2.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--primary-accent);
  display: inline-block;
}

.math-block {
  background: #f4f5fb;
  border-radius: 12px;
  padding: 1rem 1.5rem;
  margin: 0.75rem 0;
  border: 1px solid rgba(15, 18, 33, 0.05);
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
}

.math-block::-webkit-scrollbar {
  height: 6px;
}

.math-block::-webkit-scrollbar-track {
  background: rgba(15, 18, 33, 0.05);
  border-radius: 3px;
}

.math-block::-webkit-scrollbar-thumb {
  background: rgba(15, 18, 33, 0.2);
  border-radius: 3px;
}

.math-block::-webkit-scrollbar-thumb:hover {
  background: rgba(15, 18, 33, 0.3);
}

.demo {
  background: #0f1221;
  color: #f0f4ff;
}

.video-card {
  background: #0f162b;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 20px 45px rgba(10, 12, 23, 0.45);
  border: 2px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.demo-video {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
  background: transparent;
}

.video-card__body {
  padding: 1.25rem 1.5rem 1.75rem;
  color: #eef2ff;
}

.video-card__body h3 {
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
  font-weight: 600;
  text-align: center;
}

.video-card__body p {
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 0;
  line-height: 1.6;
}

.result-quantitative {
  margin-top: 2rem;
  text-align: center;
  /* padding-bottom: 3rem;
  margin-bottom: 4rem; */
}

.result-text-full {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
  margin: 0 0 1.5rem;
  text-align: left;
}

.result-figure {
  margin: 1.5rem auto 4rem;
  max-width: 960px;
}

.result-embed {
  width: 100%;
  border: none;
  box-shadow: none;
  display: block;
}

.result-caption {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.demo-widget {
  background: #f8fafc;
  border-radius: 16px;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
}

#flexible-targeting-demo .demo-widget {
  background: #f8fafc;
  border: 1px solid var(--border-color);
}

#flexible-targeting-demo .demo-output__label {
  color: var(--text-dark);
}

#flexible-targeting-demo #demo-text {
  color: var(--muted);
}

.demo-output__label {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  margin-top: 1rem;
}

.progress-bar > div {
  height: 100%;
  background: var(--secondary-accent);
  border-radius: 999px;
  transition: width 0.35s ease;
}

#flexible-targeting-demo .progress-bar {
  background: rgba(15, 18, 33, 0.1);
}

#flexible-targeting-demo .progress-bar > div {
  background: var(--primary-accent);
}

.slider {
  margin-top: 1rem;
}

.video-placeholder {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 2rem;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.video-placeholder__badge {
  text-transform: uppercase;
  letter-spacing: 0.4em;
  font-size: 0.8rem;
  color: var(--secondary-accent);
}

.video-placeholder__button {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  border: none;
  background: var(--secondary-accent);
  color: #0f1221;
  margin: 1.5rem 0;
  cursor: pointer;
  font-size: 1.4rem;
}

.posterior-display {
  background: #ffffff;
  border-radius: 18px;
  padding: 1.5rem;
  border: none;
  box-shadow: none;
  display: flex;
  justify-content: center;
  align-items: center;
}

.posterior-image {
  max-width: 400px;
  width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  transition: opacity 0.3s ease;
}

.results {
  background: #ffffff;
}

.applications {
  background: #ffffff;
}

.experiment-header {
  margin-bottom: 1.75rem;
}

.experiment-header h3 {
  font-size: 1.5rem;
  font-weight: 600;
}

/* .experiment-block {
  margin-bottom: 4rem;
  padding-bottom: 2rem;
} */

.section-subtitle.is-left {
  text-align: left;
  margin: 0 0 2.5rem;
}

.result-card {
  background: #f8fafc;
  border-radius: 16px;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  height: 100%;
}

.targeting-card {
  background: linear-gradient(135deg, #ffffff 0%, #f8faff 100%);
  border-radius: 18px;
  padding: 2rem;
  border: 2px solid rgba(240, 130, 29, 0.15);
  box-shadow: 0 10px 30px rgba(15, 18, 33, 0.08);
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.targeting-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 40px rgba(15, 18, 33, 0.12);
}

.targeting-card__header {
  margin-bottom: 1.5rem;
}

.targeting-card__header h4 {
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-top: 0.75rem;
  margin-bottom: 0;
}

.targeting-badge {
  display: inline-block;
  background: var(--primary-accent);
  color: #ffffff;
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.targeting-badge--alt {
  background: var(--secondary-accent);
  color: var(--text-dark);
}

.targeting-card__params,
.targeting-card__result,
.targeting-card__strategy {
  margin-bottom: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
}

.targeting-card__params strong,
.targeting-card__result strong,
.targeting-card__strategy strong {
  color: var(--primary-accent);
  font-weight: 600;
}

.resources {
  background: #f4f5fb;
}

.resource-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.resource-list li {
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.resource-list a {
  color: var(--text-dark);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.resource-list a:hover {
  border-color: var(--text-dark);
}

.bibtex {
  background: #ffffff;
}

.bibtex-container {
  position: relative;
}

.bibtex-block {
  background: #0f1221;
  color: #f6f7fb;
  padding: 1.5rem;
  border-radius: 16px;
  overflow-x: auto;
  margin: 0;
}

.copy-button {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: #f6f7fb;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  z-index: 10;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

.copy-button.copied {
  background: var(--secondary-accent);
  color: var(--text-dark);
  border-color: var(--secondary-accent);
}

.copy-button .fa-copy {
  font-size: 1rem;
}

.references {
  background: #ffffff;
}

.references-list {
  list-style: none;
  counter-reset: ref-counter;
  padding-left: 0;
  max-width: 900px;
  margin: 0 auto;
}

.references-list li {
  counter-increment: ref-counter;
  margin-bottom: 1.25rem;
  padding-left: 3rem;
  position: relative;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-dark);
}

.references-list li::before {
  content: "[" counter(ref-counter) "]";
  position: absolute;
  left: 0;
  font-weight: 600;
  color: var(--primary-accent);
}

.ref-authors {
  font-weight: 500;
}

.ref-title {
  font-style: italic;
}

.ref-venue {
  color: var(--muted);
}

.acknowledgment {
  background: #f4f6ff;
}

.acknowledgment-text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-dark);
  text-align: justify;
  max-width: 900px;
  margin: 0 auto;
}

.acknowledgment-text a {
  color: var(--primary-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.acknowledgment-text a:hover {
  border-bottom-color: var(--primary-accent);
}

.footer {
  background: #0c0f1f;
  color: rgba(255, 255, 255, 0.8);
}

@media screen and (max-width: 1024px) {
  .hero-card__graphic {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (max-width: 768px) {
  .hero {
    text-align: center;
  }

  .hero-card__meta {
    flex-direction: column;
    gap: 0.75rem;
  }

  .figure-card__canvas {
    grid-template-columns: 1fr;
  }
}