/* Modern CSS Variables for consistent theming */
:root {
  --primary-color: #1e516f;
  --primary-hover: #16425b;
  --secondary-color: #5f6f7a;
  --accent-color: #0f766e;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-light: #94a3b8;
  --background-primary: #ffffff;
  --background-secondary: #f8fafc;
  --background-accent: #f1f5f9;
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --gradient-primary: linear-gradient(135deg, #1e516f 0%, #0f766e 100%);
  --gradient-accent: linear-gradient(135deg, #0f766e 0%, #d97706 100%);
  --gradient-subtle: linear-gradient(135deg, #eef7f5 0%, #fff7ed 100%);
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Smooth scrolling for better UX */
html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--text-primary);
  line-height: 1.6;
  font-size: 16px;
  background-color: var(--background-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}


/* Modern Button Styles */
.button {
  border-radius: var(--border-radius) !important;
  font-weight: 600 !important;
  transition: var(--transition) !important;
  border: 2px solid transparent !important;
  position: relative;
  overflow: hidden;
}

.button.is-dark {
  background: var(--text-primary) !important;
  border: none !important;
  color: white !important;
  box-shadow: var(--shadow-md);
}

.button.is-dark:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--primary-color) !important;
}

.button.is-dark:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.footer .icon-link {
    font-size: 25px;
    color: var(--text-secondary);
    transition: var(--transition);
}

.footer .icon-link:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.link-block a {
    margin: 8px 4px;
}

.dnerf {
  font-variant: small-caps;
}


/* Hero Section Modernization */
.hero {
  position: relative;
  overflow: hidden;
}

.hero.is-light {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.hero-body {
  padding: 4rem 1.5rem;
}

.teaser .hero-body {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.teaser {
  font-family: 'Inter', sans-serif;
}


/* Publication Content Styling */
.publication-title {
    font-family: 'Inter', sans-serif !important;
    font-weight: 800 !important;
    color: var(--text-primary) !important;
    margin-bottom: 2rem !important;
    line-height: 1.1 !important;
}

.publication-banner {
  max-height: 70vh;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  margin: 2rem 0;
}

.publication-banner video {
  position: relative;
  left: auto;
  top: auto;
  transform: none;
  object-fit: cover;
  width: 100%;
  height: 100%;
  border-radius: var(--border-radius-lg);
}

.publication-header .hero-body {
  padding: 6rem 1.5rem 4rem;
}

.publication-authors {
    font-family: 'Inter', sans-serif !important;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.publication-venue {
    color: var(--text-secondary);
    width: fit-content;
    font-weight: 600;
    background: var(--background-accent);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    margin-top: 1rem;
    display: inline-block;
}

.publication-awards {
    color: #ef4444;
    width: fit-content;
    font-weight: 700;
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    border-left: 4px solid #ef4444;
    margin-top: 1rem;
}

.publication-authors a {
   color: var(--primary-color) !important;
   text-decoration: none;
   font-weight: 600;
   transition: var(--transition);
   position: relative;
}

.publication-authors a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: var(--gradient-accent);
    transition: var(--transition);
}

.publication-authors a:hover::after {
    width: 100%;
}

.publication-authors a:hover {
    color: var(--primary-hover) !important;
}

.author-block {
  display: inline-block;
  margin-right: 0.5rem;
}

.publication-banner img {
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}

.publication-banner img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Modern Video and Carousel Styling */
.publication-video {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%;
    overflow: hidden;
    border-radius: var(--border-radius-lg) !important;
    box-shadow: var(--shadow-xl);
    transition: var(--transition);
}

.publication-video:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.publication-video iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: var(--border-radius-lg);
}

.publication-body img {
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}

.publication-body img:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.results-carousel {
  overflow: hidden;
  padding: 1rem 0;
}

.results-carousel .item {
  margin: 1rem;
  overflow: hidden;
  padding: 1.5rem;
  font-size: 0;
  background: var(--background-primary);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid var(--border-color);
}

.results-carousel .item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.results-carousel .item img,
.results-carousel video {
  margin: 0;
  border-radius: var(--border-radius);
  width: 100%;
  height: auto;
}

.results-carousel .subtitle {
  font-size: 1rem !important;
  color: var(--text-secondary);
  margin-top: 1rem;
  font-weight: 500;
}

/* Pagination and Misc Improvements */
.slider-pagination .slider-page {
  background: var(--primary-color);
  border-radius: 50%;
  transition: var(--transition);
}

.slider-pagination .slider-page.is-active {
  background: var(--primary-hover);
  transform: scale(1.2);
}

.eql-cntrb { 
  font-size: 0.875rem;
  color: var(--text-light);
  font-style: italic;
}

/* Section Titles */
.title.is-3 {
  font-family: 'Inter', sans-serif !important;
  font-weight: 700 !important;
  color: var(--text-primary);
  margin-bottom: 2rem !important;
  position: relative;
  padding-bottom: 1rem;
}

.title.is-3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Content Improvements */
.content.has-text-justified {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.content.has-text-justified p {
  margin-bottom: 1.5rem;
}

/* Footer Improvements */
.footer {
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.5rem;
}

.footer .content {
  color: var(--text-secondary);
  line-height: 1.7;
}

.footer a {
  color: var(--primary-color);
  text-decoration: none;
  transition: var(--transition);
}

.footer a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* BibTeX Styling */
pre {
  background: var(--background-accent) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: var(--border-radius) !important;
  padding: 1.5rem !important;
  font-size: 0.9rem !important;
  overflow-x: auto;
  box-shadow: var(--shadow-sm);
}

code {
  background: var(--background-accent) !important;
  color: var(--text-primary) !important;
  font-family: 'SF Mono', 'Monaco', 'Cascadia Code', 'Roboto Mono', monospace !important;
}

/* BibTeX Section Improvements */
.bibtex-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.copy-bibtex-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.copy-bibtex-btn:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.copy-bibtex-btn.copied {
  background: #10b981;
}

.copy-bibtex-btn.copied .copy-text::after {
  content: "ied!";
}

/* Scroll to Top Button */
.scroll-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
}

.scroll-to-top:hover {
  background: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

.scroll-to-top.visible {
  opacity: 1;
  visibility: visible;
}


/* More Works Dropdown */
.more-works-container {
  position: fixed;
  top: 2rem;
  right: 2rem;
  z-index: 1000;
}

.more-works-btn {
  background: var(--background-primary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'Inter', sans-serif;
}

.more-works-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  background: var(--background-secondary);
  border-color: var(--primary-color);
}

.more-works-btn .dropdown-arrow {
  transition: var(--transition);
  font-size: 0.8rem;
}

.more-works-btn.active .dropdown-arrow {
  transform: rotate(180deg);
}

.more-works-dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: 400px;
  max-width: 90vw;
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition);
  max-height: 70vh;
  overflow-y: auto;
}

.more-works-dropdown.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 1.5rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.dropdown-header h4 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.close-btn:hover {
  background: var(--background-accent);
  color: var(--text-primary);
}

.works-list {
  padding: 1rem;
}

.work-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 1rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  margin-bottom: 0.5rem;
}

.work-item:hover {
  background: var(--background-accent);
  transform: translateX(4px);
}

.work-info h5 {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.work-info p {
  margin: 0 0 0.5rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.work-venue {
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
}

.work-item .fas {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-top: 0.2rem;
  flex-shrink: 0;
}


/* Mobile Responsive Improvements */
@media screen and (max-width: 768px) {
  .hero-body {
    padding: 2rem 1rem;
  }
  
  .publication-header .hero-body {
    padding: 3rem 1rem 2rem;
  }
  
  .publication-title {
    font-size: 2.5rem !important;
    line-height: 1.2 !important;
    margin-bottom: 1.5rem !important;
  }
  
  .publication-authors {
    font-size: 1rem !important;
  }
  
  .button {
    margin: 0.25rem !important;
    font-size: 0.875rem !important;
    padding: 0.75rem 1rem !important;
  }
  
  .more-works-container {
    bottom: 2rem;
    right: 1rem;
    top: auto;
  }
  
  .more-works-btn {
    padding: 0.6rem 1rem;
    font-size: 0.8rem;
  }
  
  .more-works-dropdown {
    width: calc(100vw - 2rem);
    right: -1rem;
    bottom: calc(100% + 0.5rem);
    top: auto;
  }
  
  .results-carousel .item {
    margin: 0.5rem;
    padding: 1rem;
  }
  
  .teaser .hero-body {
    padding: 1rem;
  }
  
  .content.has-text-justified {
    font-size: 1rem;
  }
}

@media screen and (max-width: 480px) {
  .publication-title {
    font-size: 2rem !important;
  }
  
  .hero-body {
    padding: 1.5rem 0.75rem;
  }
  
  .more-works-container {
    position: fixed;
    bottom: 2rem;
    right: 1rem;
    z-index: 1000;
  }
  
  .more-works-btn {
    padding: 0.5rem 0.75rem;
    font-size: 0.75rem;
  }
  
  .more-works-dropdown {
    position: absolute;
    bottom: calc(100% + 0.5rem);
    right: 0;
    width: calc(100vw - 2rem);
    max-width: 90vw;
  }
  
  .link-block {
    display: block;
    margin-bottom: 0.5rem;
  }
  
  .button {
    width: 100%;
    justify-content: center;
  }
}

/* Tablet Responsive */
@media screen and (min-width: 769px) and (max-width: 1024px) {
  .hero-body {
    padding: 3rem 2rem;
  }
  
  .publication-header .hero-body {
    padding: 4rem 2rem 3rem;
  }
}

/* Animation for page load */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero, .section {
  animation: fadeInUp 0.6s ease-out;
}

/* Improved focus states for accessibility */
.button:focus,
.related-works-btn:focus,
a:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}


/* Print styles */
@media print {
  .more-works-container {
    display: none;
  }
  
  .hero, .section {
    animation: none;
  }
  
  .button {
    background: transparent !important;
    color: var(--text-primary) !important;
    box-shadow: none !important;
  }
}

/* Scrolling Videos Section */
.scrolling-videos {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  overflow-y: auto;
  padding: 1rem;
}

.video-wrapper {
  flex-shrink: 0;
  width: 100%;
}

.video-wrapper video {
  max-width: 100%;
  height: auto;
  display: block;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
  .scrolling-videos {
    gap: 1.5rem;
  }
}

/* AnchorWorld project page */
.anchor-hero {
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.96), rgba(255, 255, 255, 0.92)),
    var(--gradient-subtle);
  border-bottom: 1px solid var(--border-color);
}

.institution-line {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.25rem 1rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.author-note {
  color: var(--text-light);
  font-size: 0.95rem;
  margin: -0.5rem 0 1.5rem;
}

.video-loading-note {
  color: #dc2626;
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: 0.9rem;
}

.video-loading-note a {
  color: inherit !important;
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.anchor-overview {
  padding-top: 2.5rem;
}

.hero-figure {
  margin-bottom: 2rem;
}

.hero-figure img,
.figure-frame img,
.analysis-item img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  background: var(--background-primary);
}

.figure-frame {
  margin: 2rem auto;
}

.figure-frame.is-tall img {
  max-height: 760px;
  object-fit: contain;
}

.anchor-tldr {
  max-width: 920px;
  margin: 0 auto;
  font-size: 1.08rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.anchor-pill-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.anchor-pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.55rem 0.95rem;
  border: 1px solid rgba(15, 118, 110, 0.22);
  border-radius: 999px;
  background: #f0fdfa;
  color: #115e59;
  font-weight: 700;
  font-size: 0.92rem;
}

.contribution-grid,
.method-grid,
.analysis-grid,
.demo-placeholder-grid {
  display: grid;
  gap: 1rem;
}

.contribution-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.contribution-card,
.demo-placeholder,
.method-grid article {
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.contribution-icon {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  border-radius: 50%;
  color: white;
  background: var(--gradient-primary);
  box-shadow: var(--shadow-md);
}

.contribution-card h3,
.method-grid h3,
.demo-placeholder h3 {
  color: var(--text-primary);
  font-size: 1.08rem;
  font-weight: 800;
  margin-bottom: 0.65rem;
}

.contribution-card p,
.method-grid p,
.demo-placeholder p,
.analysis-item figcaption,
.method-description {
  color: var(--text-secondary);
  line-height: 1.7;
}

.method-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2rem;
}

.method-grid.method-grid-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.method-grid article p + p {
  margin-top: 0.85rem;
}

.method-details {
  max-width: 920px;
  margin: 2.5rem auto 0;
}

.method-block + .method-block {
  margin-top: 2.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.method-subtitle {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.method-details p {
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.method-details p:last-child {
  margin-bottom: 0;
}

.video-sections {
  margin-top: 2rem;
}

.comparison-notes {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.comparison-note-title {
  color: var(--text-primary) !important;
  font-weight: 800;
  margin-bottom: 0.45rem !important;
}

.comparison-list,
.comparison-references {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-top: 0 !important;
  margin-bottom: 1.1rem !important;
}

.comparison-list li,
.comparison-references li {
  margin-bottom: 0.65rem;
}

.comparison-references {
  font-size: 0.95rem;
}

.video-topic + .video-topic {
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.video-topic-title {
  color: var(--text-primary);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
}

.video-topic-description,
.video-subsection-description {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 1rem;
  margin-bottom: 1.2rem;
}

.video-subsection + .video-subsection {
  margin-top: 2rem;
}

.video-subsection-title {
  color: var(--primary-color);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.85rem;
}

.video-carousel {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  grid-template-rows: auto auto;
  gap: 0.75rem 1rem;
  align-items: center;
  background: var(--background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 1rem;
  box-shadow: var(--shadow-sm);
}

.carousel-nav {
  grid-row: 1;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  background: var(--background-secondary);
  color: var(--primary-color);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.carousel-nav:hover:not(:disabled) {
  background: var(--primary-color);
  color: #fff;
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.carousel-nav:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.carousel-nav.is-hidden {
  visibility: hidden;
}

.carousel-prev {
  grid-column: 1;
}

.carousel-next {
  grid-column: 3;
}

.carousel-viewport {
  grid-column: 2;
  grid-row: 1;
  overflow: hidden;
  border-radius: var(--border-radius);
  background: var(--background-primary);
  transition: height 0.35s ease;
  min-height: 10rem;
}

.carousel-track {
  display: flex;
  align-items: flex-start;
  transition: transform 0.45s cubic-bezier(0.4, 0, 0.2, 1);
}

.carousel-slide {
  flex: 0 0 100%;
  min-width: 100%;
}

.video-player {
  display: flex;
  flex-direction: column;
}

.carousel-slide video {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
  cursor: pointer;
}

.video-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--background-secondary);
  border-top: 1px solid var(--border-color);
}

.video-play-btn {
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  border: none;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: var(--transition);
}

.video-play-btn:hover {
  background: var(--primary-hover);
}

.video-progress {
  flex: 1 1 auto;
  min-width: 0;
  height: 0.35rem;
  margin: 0;
  appearance: none;
  background: var(--border-color);
  border-radius: 999px;
  cursor: pointer;
}

.video-progress::-webkit-slider-thumb {
  appearance: none;
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
}

.video-progress::-moz-range-thumb {
  width: 0.85rem;
  height: 0.85rem;
  border: none;
  border-radius: 50%;
  background: var(--primary-color);
  cursor: pointer;
}

.carousel-footer {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
}

.carousel-indicator {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
}

@media screen and (max-width: 768px) {
  .video-carousel {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto auto;
    padding: 0.85rem;
  }

  .carousel-prev,
  .carousel-next {
    grid-row: 2;
    justify-self: center;
  }

  .carousel-prev {
    grid-column: 1;
    justify-self: start;
  }

  .carousel-next {
    grid-column: 1;
    justify-self: end;
  }

  .carousel-viewport {
    grid-column: 1;
    grid-row: 1;
  }

  .carousel-footer {
    grid-row: 3;
  }

}

.stage-timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.stage-timeline div {
  border-top: 3px solid var(--accent-color);
  background: var(--background-primary);
  border-radius: 8px;
  padding: 1rem;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.stage-timeline span {
  display: block;
  color: var(--primary-color);
  font-weight: 800;
  margin-bottom: 0.35rem;
}

.analysis-grid {
  grid-template-columns: 1.2fr 1fr;
  align-items: start;
}

.analysis-item {
  margin: 0;
}

.analysis-item figcaption {
  font-size: 0.98rem;
  margin-top: 0.85rem;
}

.demo-placeholder-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.demo-placeholder {
  text-align: center;
}

.demo-placeholder .fas {
  color: var(--accent-color);
  font-size: 1.8rem;
  margin-bottom: 0.85rem;
}

.copy-bibtex-btn.copied .copy-text::after {
  content: "";
}

@media screen and (max-width: 1024px) {
  .contribution-grid,
  .method-grid,
  .demo-placeholder-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stage-timeline,
  .analysis-grid {
    grid-template-columns: 1fr;
  }

  .figure-frame.is-tall img {
    max-height: none;
  }
}

@media screen and (max-width: 640px) {
  .contribution-grid,
  .method-grid,
  .demo-placeholder-grid {
    grid-template-columns: 1fr;
  }

  .institution-line {
    display: block;
  }

  .institution-line span {
    display: block;
    margin-bottom: 0.25rem;
  }

  .anchor-pill {
    width: 100%;
    justify-content: center;
    text-align: center;
  }
}