/* Modern CSS Variables for consistent theming */
:root {
  --primary-color: #2563eb;
  --primary-hover: #1d4ed8;
  --secondary-color: #64748b;
  --accent-color: #0ea5e9;
  --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, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-subtle: linear-gradient(135deg, #ffecd2 0%, #fcb69f 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;
}

/* ========================
   Modern Hero Buttons
   ======================== */
.button.is-dark {
  background: #1f2937 !important; /* 深灰偏蓝 */
  border: 1px solid rgba(255,255,255,0.1) !important;
  color: white !important;
  border-radius: 30px !important; /* 变成圆角胶囊形 */
  padding: 0 1.5rem !important;
  height: 2.75em !important;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

.button.is-dark .icon {
  margin-right: 0.5rem !important;
  transition: transform 0.3s ease;
}

/* Hover 效果：变亮、上浮、图标微动 */
.button.is-dark:hover {
  background: black !important;
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2); /* 悬浮时阴影加深 */
  border-color: rgba(255,255,255,0.3) !important;
}

.button.is-dark:hover .icon {
  transform: scale(1.1) rotate(-5deg); /* 图标有个俏皮的小动作 */
}

.button.is-dark:active {
  transform: translateY(-1px);
  box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.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;
}

.teaser-video {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--background-accent);
}

.teaser .subtitle {
  margin-top: 2rem;
}

.teaser-video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}


/* 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-video.is-empty {
    border: 2px dashed var(--border-color);
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    padding: 2.5rem 1rem;
    padding-bottom: 2.5rem;
    min-height: 320px;
    background: var(--background-accent);
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.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;
}

/* ========================
   Stylish Section Titles
   ======================== */
.title.is-3 {
  font-family: 'Inter', sans-serif !important;
  font-weight: 800 !important; /* 以此加粗字体 */
  color: var(--text-primary);
  margin-bottom: 2.5rem !important;
  position: relative;
  display: inline-block; /* 让下划线跟随文字宽度，或者保持block居中 */
  padding-bottom: 10px;
}

/* 确保带 has-text-centered 的标题真正居中 */
.title.is-3.has-text-centered {
  display: block;
  text-align: center;
  width: 100%;
}

/* 移除旧的 after，重写 */
.title.is-3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px; /* 稍微缩短 */
  height: 4px; /* 加厚 */
  background: linear-gradient(90deg, #2563eb, #0ea5e9); /* 蓝青渐变 */
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3); /* 增加发光感 */
}

/* 移除特定标题的下划线 */
.title.is-3.no-underline::after {
  display: none;
}

/* Acknowledgments 标题减少底部间距 */
.title.is-3.no-underline {
  margin-bottom: 1rem !important;
}

/* 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;
}

/* ========================
   Mac-style Dark Terminal BibTeX
   ======================== */
pre {
  background: #1e1e1e !important; /* 深色背景 */
  border: 1px solid #333 !important;
  border-radius: 8px !important;
  padding: 3rem 1.5rem 1.5rem 1.5rem !important; /* 顶部留出空间给"红绿灯"圆点 */
  font-size: 0.9rem !important;
  overflow-x: auto;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15); /* 更强的阴影 */
  position: relative;
}

/* 模拟 Mac 窗口左上角的三个圆点 (红/黄/绿) */
pre::before {
  content: '';
  position: absolute;
  top: 15px;
  left: 15px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ff5f56; /* 红色圆点 */
  box-shadow: 20px 0 0 #ffbd2e, 40px 0 0 #27c93f; /* 黄色和绿色圆点 */
}

code {
  background: transparent !important;
  color: #a9b7c6 !important; /* 浅灰代码色，类似 PyCharm/VSCode 默认色 */
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace !important;
  text-shadow: none !important;
}

/* BibTeX Section Improvements */
.bibtex-header {
  margin-bottom: 0.5rem;
  /* 稍微调整布局，让按钮和标题更协调 */
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.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;
  }
}


/* =========================================
   Modern Abstract Video Gallery
   ========================================= */
.abstract-video-wrapper {
  /* 定义布局比例：左侧列表更小，右侧视频更大 */
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  margin-top: 2rem;
  background: var(--background-secondary); /* 增加底色背景 */
  padding: 1.5rem;
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--border-color);
  max-width: 100%; /* 确保充分利用可用空间 */
}

/* --- 左侧：预览列表 (Playlist Column) --- */
.preview-column {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  /* 固定宽度，不再依赖flex-basis，防止挤压 */
  width: 220px; /* 减小宽度，给主视频更多空间 */
  flex-shrink: 0;
  max-height: 500px;
  overflow-y: auto; /*如果列表太长可以滚动*/
  padding-right: 0.5rem; /* 给滚动条留点空间 */
}

/* 自定义滚动条样式 */
.preview-column::-webkit-scrollbar {
  width: 6px;
}
.preview-column::-webkit-scrollbar-track {
  background: transparent;
}
.preview-column::-webkit-scrollbar-thumb {
  background-color: var(--border-color);
  border-radius: 20px;
}

/* 列表项 (按钮) */
.preview-item {
  display: flex;
  align-items: center; /* 垂直居中 */
  gap: 1rem;
  border: 1px solid transparent; /* 默认无边框 */
  border-radius: var(--border-radius);
  padding: 0.75rem;
  background: transparent; /* 默认透明 */
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  text-align: left;
  position: relative;
  overflow: hidden;
}

/* Hover 状态 */
.preview-item:hover {
  background: rgba(255, 255, 255, 0.6);
  transform: translateX(4px); /* 轻微右移反馈 */
}

/* 选中 (Active) 状态 */
.preview-item.is-active {
  background: var(--background-primary);
  border-color: var(--border-color);
  box-shadow: var(--shadow-md);
  transform: scale(1.02); /* 稍微放大 */
}

/* 选中状态左侧高亮条 */
.preview-item.is-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--primary-color);
  border-top-left-radius: var(--border-radius);
  border-bottom-left-radius: var(--border-radius);
}

/* --- 缩略图样式 --- */
.preview-video {
  width: 80px; /* 固定缩略图宽度 */
  height: 54px; /* 固定缩略图高度 (16:9 approx) */
  flex-shrink: 0;
  border-radius: 6px;
  overflow: hidden;
  position: relative;
  background: #000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.preview-video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8; /* 默认稍微暗一点 */
  transition: opacity 0.3s;
}

.preview-item:hover .preview-video video,
.preview-item.is-active .preview-video video {
  opacity: 1; /* 激活或悬停时变亮 */
}

/* --- 文本标签样式 --- */
.preview-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.2;
  transition: color 0.2s;
}

.preview-item.is-active .preview-label {
  color: var(--primary-color); /* 选中文字变色 */
  font-weight: 700;
}

/* 添加 "Now Playing" 指示文字 (可选) */
.preview-item.is-active .preview-label::after {
  content: 'Now Playing';
  display: block;
  font-size: 0.7rem;
  color: var(--primary-color);
  opacity: 0.7;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 图标样式优化 */
.preview-label i {
  display: inline-block;
  width: 24px;       /* 固定宽度，确保文字左对齐整齐 */
  text-align: center;
  margin-right: 4px; /* 图标和文字的间距 */
  opacity: 0.7;      /* 默认稍微淡一点，不抢文字风头 */
  transition: all 0.2s;
}

/* 选中状态下图标更明显 */
.preview-item.is-active .preview-label i,
.preview-item:hover .preview-label i {
  opacity: 1;
  transform: scale(1.1); /* 选中时图标微微放大 */
}

/* --- 右侧：主视频区域 --- */
.main-video-column {
  flex: 1; /* 占据剩余空间 */
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0; /* 防止flex子项溢出 */
}

/* ========================
   Smooth Transition Video
   ======================== */
.main-video-container {
  position: relative;
  width: 100%;
  /* 16:9 比例容器 */
  padding-bottom: 56.25%; 
  height: 0;
  background: #000; /* 深色背景，防止透明时漏光 */
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.main-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain; /* 或者 cover，看你的视频比例 */
  transition: opacity 0.6s ease-in-out; /* 0.6秒的丝滑淡入淡出 */
}

/* 显示状态：完全不透明 */
.main-video.active-layer {
  opacity: 1;
  z-index: 2; /* 在上层 */
}

/* 隐藏状态：完全透明 */
.main-video.hidden-layer {
  opacity: 0;
  z-index: 1; /* 在下层 */
}

.main-video-caption {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center; /* 标题居中 */
  margin-top: 0.5rem;
  padding: 0.5rem;
  background: white;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  }

/* --- 移动端响应式 --- */
@media screen and (max-width: 1023px) {
  .abstract-video-wrapper {
    flex-direction: column-reverse; /* 手机上列表在下，视频在上 */
    padding: 1rem;
    gap: 1rem;
  }

  .preview-column {
    width: 100%;
    flex-direction: row; /* 改为横向滚动 */
    overflow-x: auto;
    padding-bottom: 1rem;
    border-bottom: none;
    max-height: none;
  }

  .preview-item {
    min-width: 160px; /* 卡片最小宽度 */
    flex-direction: column; /* 图在上字在下 */
    align-items: center;
    text-align: center;
    padding: 0.5rem;
    gap: 0.5rem;
  }
  
  .preview-video {
    width: 100%;
    height: 90px;
  }
  
  .preview-item.is-active::before {
    /* 移动端改为底部高亮条 */
    width: 100%;
    height: 4px;
    top: auto;
    bottom: 0;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
  }
  
  .preview-item.is-active .preview-label::after {
    display: none; /* 空间不够，隐藏Now Playing */
  }
}

/* Pipeline Caption Styling */
.pipeline-caption {
  font-family: 'Inter', sans-serif;
}

.pipeline-caption p {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-secondary);
  text-align: justify;
  margin: 0;
  padding: 1rem 1.5rem;
  background: var(--background-secondary);
  border-radius: var(--border-radius);
}

.pipeline-caption strong {
  color: var(--text-primary);
  font-weight: 600;
  }

@media screen and (max-width: 768px) {
  .pipeline-caption p {
    font-size: 0.9rem;
    padding: 0.75rem 1rem;
    line-height: 1.6;
  }
}

/* ========================
   Pro Comparison Table (High Contrast)
   ======================== */
.table-container-custom {
  overflow-x: auto;
  margin-bottom: 2rem;
  border-radius: 12px;
  /* 给整个表格加一个漂亮的投影，增加立体感 */
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
  background: white;
}

.comparison-table {
  width: 100%;
  border-collapse: separate; /* 允许圆角 */
  border-spacing: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 0.95rem; /* 稍微大一点，看清字 */
}

/* --- 表头设计：深色背景，白字，高对比度 --- */
.comparison-table thead th {
  background-color: #1e293b !important; /* 深蓝灰色背景 */
  color: #ffffff !important;            /* 白色文字 */
  font-weight: 600 !important;
  text-align: center !important;
  padding: 1.2rem 0.8rem !important;    /* 增加高度，不挤 */
  letter-spacing: 0.02em !important;    /* 字间距微调 */
  border-bottom: 3px solid var(--primary-color) !important; /* 底部加一条亮线 */
  line-height: 1.4 !important;
  vertical-align: middle !important;
}

/* 第一列（Method）表头特殊处理 */
.comparison-table thead th.method-col {
  text-align: left;
  padding-left: 2rem;
  border-top-left-radius: 12px; /* 左上圆角 */
}

/* 最后一列圆角 */
.comparison-table thead th:last-child {
  border-top-right-radius: 12px;
  }

/* --- 内容行设计 --- */
.comparison-table td {
  padding: 1rem 0.8rem !important; /* 这里的 padding 决定了行高，大一点才舒服 */
  text-align: center !important;
  border-bottom: 1px solid #e2e8f0 !important;
  vertical-align: middle !important;
  color: #64748b !important; /* 普通图标/文字用灰色，不抢眼 */
  transition: background-color 0.2s;
}

/* 第一列（方法名）：加粗，深色 */
.comparison-table td.method-name {
  text-align: left !important;
  padding-left: 2rem !important;
  font-weight: 700 !important;
  color: #0f172a !important; /* 深黑色，突出方法名 */
  font-size: 1rem !important;
}

/* 方法名链接样式 - 与作者链接相同的特效 */
.comparison-table td.method-name a {
  color: #0f172a !important;
  text-decoration: none;
  font-weight: 600;
  transition: var(--transition);
  position: relative;
}

.comparison-table td.method-name a::after {
  content: '';
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -2px;
  left: 0;
  background: var(--gradient-accent);
  transition: var(--transition);
}

.comparison-table td.method-name a:hover::after {
  width: 100%;
}

.comparison-table td.method-name a:hover {
  color: var(--primary-color) !important;
}

/* --- 斑马纹：隔行变色 --- */
/* 让偶数行变成极淡的灰色，区分行与行 */
.comparison-table tbody tr:nth-child(even) {
  background-color: #f8fafc !important;
}

/* Hover 效果：鼠标划过变亮 */
.comparison-table tbody tr:hover {
  background-color: #f1f5f9;
}

/* --- OURS 行：重点高亮 --- */
.comparison-table tr.ours-row {
  background-color: #eff6ff !important; /* 浅蓝色背景 */
  position: relative;
  box-shadow: 0 4px 6px -1px rgba(59, 130, 246, 0.1); /* 微微浮起 */
  z-index: 1;
}

/* Ours 行的第一列 */
.comparison-table tr.ours-row td.method-name {
  color: #2563eb; /* 品牌蓝 */
  font-size: 1.1rem; /* 字号加大 */
  position: relative;
}

/* 给 Ours 左边加一条明显的蓝线 */
.comparison-table tr.ours-row td:first-child {
  border-left: 4px solid #2563eb;
}

/* Ours 行内的图标颜色 */
.comparison-table tr.ours-row .icon-check {
  color: #2563eb; /* 对勾也变成蓝色 */
  filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.2)); /* 图标发光 */
}

/* 图标基础样式 */
.icon-check {
  color: #10b981 !important; /* 绿色 */
  font-size: 1.2rem !important;
}

.icon-cross {
  color: #ef4444 !important; /* 红色叉号 */
  font-size: 1rem !important;
}

/* 备注文字样式 */
.content.is-size-7 {
  margin-top: 1rem;
  color: #94a3b8; /* 浅灰 */
  padding: 0 1rem;
  line-height: 1.6;
  border-left: 3px solid #cbd5e1; /* 左侧装饰线 */
}

/* =========================================
   Progressive Snow Effect Showcase
   ========================================= */

.progressive-video-wrapper {
  margin-bottom: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.progressive-main-video-container {
  position: relative;
  width: 100%;
  max-width: 1200px;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  height: 0;
  background: #000;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.progressive-main-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.6s ease-in-out;
}

.progressive-main-video.active-layer {
  opacity: 1;
  z-index: 2;
}

.progressive-main-video.hidden-layer {
  opacity: 0;
  z-index: 1;
}

.progressive-video-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  z-index: 10;
  display: none;
}

.progressive-video-loader.show {
  display: block;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.progressive-main-video-caption {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: center;
  padding: 0.75rem 1.5rem;
  background: var(--background-primary);
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.progressive-main-video-caption i {
  color: var(--primary-color);
}

/* Progressive Timeline */
.progressive-timeline-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

.progressive-timeline-track {
  position: relative;
  width: 100%;
  height: 120px;
  background: var(--background-secondary);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem 2rem;
  box-shadow: var(--shadow-md);
}

.progressive-timeline-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
}

.progressive-timeline-steps {
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  height: 100%;
  z-index: 2;
}

.progressive-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progressive-step:hover {
  background: rgba(37, 99, 235, 0.05);
  transform: translateY(-4px);
}

.progressive-step.is-active {
  background: rgba(37, 99, 235, 0.1);
}

.progressive-step.is-active .step-marker {
  transform: scale(1.2);
  color: var(--primary-color);
}

.progressive-step.is-active .step-marker i {
  color: var(--primary-color);
  filter: drop-shadow(0 2px 4px rgba(37, 99, 235, 0.3));
}

.progressive-step.is-active .step-title {
  color: var(--primary-color);
  font-weight: 700;
}

.step-marker {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--background-primary);
  border: 3px solid var(--border-color);
  border-radius: 50%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-sm);
}

.progressive-step.is-active .step-marker {
  border-color: var(--primary-color);
  background: rgba(37, 99, 235, 0.1);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.step-marker i {
  font-size: 1.2rem;
  color: var(--text-secondary);
  transition: all 0.3s;
}

.step-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  text-align: center;
}

.step-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color 0.3s;
}

.step-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  opacity: 0.8;
}

.progressive-step.is-active .step-desc {
  color: var(--primary-color);
  opacity: 1;
}

/* Eye icon styles */
.step-eye-icon {
  margin-top: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.eye-icon {
  width: 14px;
  height: 14px;
  pointer-events: none;
}

/* Eye icon states - controlled by JavaScript */
.step-eye-icon .eye-on {
  display: none !important;
}

.step-eye-icon .eye-off {
  display: block !important;
}

.step-eye-icon.eye-open .eye-on {
  display: block !important;
}

.step-eye-icon.eye-open .eye-off {
  display: none !important;
}

/* 连接线效果 */
.progressive-step::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 50%;
  width: calc(100% - 48px);
  height: 2px;
  background: var(--border-color);
  z-index: -1;
  transition: background 0.3s;
}

.progressive-step:last-child::before {
  display: none;
}

.progressive-step.is-active::before,
.progressive-step.is-active + .progressive-step::before {
  background: var(--primary-color);
  opacity: 0.3;
}

/* 响应式设计 */
@media screen and (max-width: 1023px) {
  .progressive-timeline-track {
    height: auto;
    padding: 1.5rem 1rem;
  }

  .progressive-timeline-steps {
    flex-direction: column;
    gap: 1rem;
    height: auto;
  }

  .progressive-step {
    flex-direction: row;
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem;
    border-left: 3px solid transparent;
  }

  .progressive-step.is-active {
    border-left-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
  }

  .progressive-step::before {
    display: none;
  }

  .step-label {
    align-items: flex-start;
    text-align: left;
    margin-left: 1rem;
  }

  .step-marker {
    flex-shrink: 0;
  }
}