/* ===== Academic Style (inspired by kei18.github.io) ===== */

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  color: #2d2d2d;
  background: #ffffff;
  line-height: 1.55;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #0066cc;
  text-decoration: none;
}
a:hover { text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', 'Times New Roman', serif;
  font-weight: 700;
  line-height: 1.25;
  color: #1a1a1a;
}

/* ===== Layout: Sidebar + Main ===== */
.page-wrapper {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: 260px;
  height: 100vh;
  background: #fafafa;
  border-right: 1px solid #e8e8e8;
  padding: 40px 24px;
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-brand {
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 4px;
}

.sidebar-role {
  font-size: 0.85rem;
  color: #666;
  margin-bottom: 16px;
  line-height: 1.4;
}

.sidebar-avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.sidebar-bio {
  font-size: 0.82rem;
  color: #555;
  line-height: 1.5;
  margin-bottom: 20px;
}

.sidebar-nav {
  list-style: none;
  margin-bottom: 20px;
}

.sidebar-nav li {
  margin-bottom: 2px;
}

.sidebar-nav a {
  display: block;
  padding: 5px 0;
  color: #444;
  font-size: 0.88rem;
  font-weight: 500;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -12px;
  transition: all 0.15s ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
  color: #0066cc;
  border-left-color: #0066cc;
  text-decoration: none;
}

.sidebar-social {
  display: flex;
  gap: 14px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid #e0e0e0;
}

.sidebar-social a {
  color: #6f6f6f;
  font-size: 1rem;
  transition: color 0.15s ease;
}

.sidebar-social a:hover {
  color: #0066cc;
  text-decoration: none;
}

/* Main Content */
.main-content {
  margin-left: 260px;
  flex: 1;
  max-width: 780px;
  padding: 40px 48px 60px;
}

/* Mobile toggle */
.mobile-toggle {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 200;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 1rem;
  color: #333;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}

/* ===== Sections ===== */
.section {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid #eee;
}

.section:last-child {
  border-bottom: none;
}

.section-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 16px;
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
}

/* ===== About / Hero (in main) ===== */
.hero-section {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid #eee;
}

.hero-name {
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
  font-size: 1.9rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 6px;
}

.hero-role {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 14px;
}

.hero-bio {
  color: #444;
  line-height: 1.6;
  font-size: 0.95rem;
}

.hero-bio p {
  margin-bottom: 10px;
}

/* ===== News ===== */
.news-item {
  font-size: 0.9rem;
  color: #444;
  line-height: 1.55;
  margin-bottom: 6px;
}

.news-item em {
  color: #777;
  font-style: normal;
  font-weight: 500;
}

/* ===== Experience ===== */
.exp-item {
  margin-bottom: 10px;
}

.exp-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 1px;
}

.exp-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: #1a1a1a;
}

.exp-date {
  font-size: 0.8rem;
  color: #767676;
  white-space: nowrap;
}

.exp-meta {
  font-size: 0.82rem;
  color: #6f6f6f;
  line-height: 1.45;
}

.exp-meta a {
  color: #0066cc;
}

.exp-meta .sep {
  color: #bbb;
  margin: 0 4px;
}

/* ===== Project Detail: Highlights ===== */
.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}

.highlight-card {
  text-align: center;
  padding: 14px 10px;
  background: #fafafa;
  border: 1px solid #eee;
  border-radius: 6px;
}

.highlight-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: #1a1a1a;
  line-height: 1.2;
}

.highlight-label {
  font-size: 0.78rem;
  color: #767676;
  margin-top: 4px;
}

/* ===== Project Detail: Team ===== */
.team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 12px;
}

.team-member {
  padding: 10px 14px;
  background: #fafafa;
  border-radius: 6px;
  border-left: 3px solid #0066cc;
}

.team-member strong {
  font-size: 0.92rem;
  color: #1a1a1a;
}

.team-role {
  font-size: 0.78rem;
  color: #767676;
  margin-left: 4px;
}

.team-desc {
  font-size: 0.85rem;
  color: #666;
  margin: 4px 0 0;
  line-height: 1.45;
}

/* ===== Project Detail: Code Block ===== */
.code-block {
  position: relative;
  margin: 12px 0;
}

.code-block pre {
  display: none;
  margin: 0;
  padding: 14px 16px;
  background: #f6f8fa;
  border-radius: 0 0 6px 6px;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.5;
}

.code-block pre.open {
  display: block;
}

.code-toggle {
  display: block;
  width: 100%;
  padding: 8px 14px;
  background: #eef1f5;
  border: none;
  border-radius: 6px;
  font-size: 0.82rem;
  color: #555;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
}

.code-toggle:hover {
  background: #e4e8ed;
}

.code-block pre.open + .code-toggle,
.code-block pre.open ~ .code-toggle {
  border-radius: 6px 6px 0 0;
}

/* ===== Project Detail: GIF Comparison ===== */
.gif-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

.gif-compare.three-col {
  grid-template-columns: 1fr 1fr 1fr;
}

.gif-item {
  text-align: center;
}

.gif-item img {
  width: 100%;
  max-width: 360px;
  border-radius: 6px;
  border: 1px solid #e0e0e0;
}

.gif-label {
  font-size: 0.8rem;
  color: #767676;
  margin-top: 6px;
}

/* ===== Project Detail: Publication Box ===== */
.pub-box {
  background: #f8f9fa;
  border-left: 4px solid #0066cc;
  padding: 14px 18px;
  border-radius: 0 6px 6px 0;
  margin: 14px 0;
}

.pub-box strong {
  display: block;
  font-size: 0.95rem;
  color: #1a1a1a;
  margin-bottom: 4px;
}

.pub-box em {
  font-style: normal;
  color: #555;
  font-size: 0.85rem;
}

/* ===== Project Detail: Agent List ===== */
.agent-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 16px;
  margin: 12px 0;
  padding: 0;
  list-style: none;
}

.agent-list li {
  padding: 8px 12px;
  background: #fafafa;
  border-radius: 6px;
  font-size: 0.88rem;
  border-left: 3px solid #0066cc;
}

.agent-list li strong {
  color: #1a1a1a;
  font-weight: 600;
}

/* ===== Project Detail: Image Caption ===== */
.img-caption {
  text-align: center;
  font-size: 0.8rem;
  color: #767676;
  margin-top: 6px;
  margin-bottom: 16px;
}

/* ===== Publication ===== */
.pub-item {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f0f0f0;
}

.pub-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.pub-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 5px;
  line-height: 1.35;
}

.pub-authors {
  font-size: 0.87rem;
  color: #555;
  margin-bottom: 4px;
}

.pub-authors .author-me {
  font-weight: 700;
  color: #1a1a1a;
}

.pub-venue {
  font-size: 0.85rem;
  color: #444;
  font-style: italic;
  margin-bottom: 5px;
}

.pub-links {
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.pub-links a {
  font-weight: 500;
}

.pub-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.tag {
  display: inline-block;
  padding: 1px 8px;
  background: #f0f0f0;
  border-radius: 3px;
  font-size: 0.75rem;
  color: #555;
}

.pub-lead {
  color: #555;
  font-size: 0.87rem;
  line-height: 1.5;
  padding: 8px 12px;
  background: #f8f9fa;
  border-left: 2px solid #0066cc;
}

.pub-abstract summary {
  cursor: pointer;
  font-weight: 600;
  color: #444;
  font-size: 0.85rem;
}

.pub-abstract summary:hover { color: #0066cc; }

.pub-abstract p {
  margin-top: 8px;
  color: #555;
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ===== Projects (compact list) ===== */
.proj-item {
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid #f0f0f0;
}

.proj-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.proj-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 3px;
}

.proj-title {
  font-weight: 700;
  font-size: 0.95rem;
  color: #1a1a1a;
}

.proj-title a { color: #1a1a1a; }
.proj-title a:hover { color: #0066cc; }

.proj-meta {
  font-size: 0.8rem;
  color: #767676;
}

.proj-desc {
  font-size: 0.88rem;
  color: #555;
  line-height: 1.5;
}

.proj-links {
  font-size: 0.85rem;
  margin-top: 4px;
}

/* ===== Talks ===== */
.talk-item {
  padding: 6px 0;
  border-bottom: 1px solid #f0f0f0;
}

.talk-item:last-child { border-bottom: none; }

.talk-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.talk-date {
  font-size: 0.78rem;
  color: #767676;
  white-space: nowrap;
}

.talk-title {
  font-weight: 600;
  font-size: 0.9rem;
  color: #1a1a1a;
}

.talk-topic {
  color: #555;
  font-size: 0.85rem;
  line-height: 1.4;
  margin-top: 1px;
}

/* ===== Gallery Page ===== */
.gallery-body {
  background: #0a0a0a;
  color: #e0e0e0;
}

.gallery-body .main-content {
  max-width: 1100px;
  padding: 32px 40px;
}

.gallery-body .section-title {
  color: #fff;
  border-bottom-color: #333;
}

.gallery-hero {
  text-align: center;
  padding: 24px 0 32px;
}

.gallery-hero h1 {
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.gallery-hero p {
  color: #999;
  font-size: 0.95rem;
}

.gallery-nav {
  position: sticky;
  top: 0;
  background: #0a0a0a;
  z-index: 50;
  display: flex;
  justify-content: center;
  gap: 32px;
  padding: 16px 0 20px;
  border-bottom: 1px solid #333;
  margin-bottom: 32px;
}

.gallery-nav a {
  color: #888;
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
}

.gallery-nav a:hover { color: #fff; }

.gallery-section {
  margin-bottom: 72px;
}

.gallery-section:last-child {
  margin-bottom: 0;
}

.gallery-section h2 {
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.gallery-section .desc {
  text-align: center;
  color: #888;
  max-width: 550px;
  margin: 0 auto 24px;
  font-size: 0.88rem;
  line-height: 1.5;
}

.masonry-grid {
  column-count: 3;
  column-gap: 8px;
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: 8px;
  overflow: hidden;
  border-radius: 3px;
  cursor: pointer;
}

.masonry-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.4s ease;
}

.masonry-item:hover img {
  transform: scale(1.03);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.96);
  z-index: 1000;
  justify-content: center;
  align-items: center;
  padding: 30px;
}

.lightbox.active { display: flex; }

.lightbox img {
  max-height: 92vh;
  max-width: 92vw;
  object-fit: contain;
  border-radius: 3px;
}

.lightbox-close {
  position: absolute;
  top: 16px;
  right: 24px;
  color: #fff;
  font-size: 2.2rem;
  cursor: pointer;
  background: none;
  border: none;
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: #fff;
  font-size: 2.5rem;
  cursor: pointer;
  background: none;
  border: none;
  padding: 16px;
}

.lightbox-prev { left: 8px; }
.lightbox-next { right: 8px; }

/* ===== Detail Pages ===== */
.detail-back {
  display: inline-block;
  font-size: 0.85rem;
  margin-bottom: 12px;
  color: #666;
}

.detail-back:hover { color: #0066cc; }

.detail-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 4px;
  font-family: 'Lora', Georgia, 'Songti SC', 'SimSun', serif;
}

.detail-meta {
  font-size: 0.85rem;
  color: #6f6f6f;
  margin-bottom: 16px;
}

.detail-section {
  margin-bottom: 32px;
}

.detail-section h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid #e0e0e0;
  color: #1a1a1a;
}

.detail-section h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 20px 0 8px;
  color: #222;
  padding-left: 10px;
  border-left: 3px solid #0066cc;
}

.detail-section p, .detail-section li {
  color: #444;
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 10px;
}

.detail-section ul, .detail-section ol {
  margin-left: 20px;
  margin-bottom: 12px;
}

.detail-section li {
  margin-bottom: 5px;
}

.detail-img {
  max-width: 100%;
  border-radius: 6px;
  margin: 14px 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.detail-img-center {
  display: block;
  max-width: 520px;
  width: 100%;
  border-radius: 6px;
  margin: 14px auto;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

pre {
  background: #f4f4f5;
  padding: 12px 16px;
  border-radius: 4px;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.45;
  margin: 10px 0;
}

code {
  font-family: 'SFMono-Regular', Menlo, Monaco, Consolas, monospace;
  background: #f4f4f5;
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 0.88em;
}

pre code { background: none; padding: 0; }

video {
  max-width: 100%;
  border-radius: 4px;
  margin: 10px 0;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    box-shadow: 2px 0 12px rgba(0,0,0,0.15);
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
    padding: 56px 20px 40px;
    max-width: 100%;
  }

  .mobile-toggle {
    display: block;
  }

  .gallery-body .main-content {
    margin-left: 0;
    padding: 56px 16px 40px;
  }

  .masonry-grid { column-count: 2; column-gap: 6px; }
  .masonry-item { margin-bottom: 6px; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .main-content {
    padding: 56px 16px 32px;
  }

  .hero-name {
    font-size: 1.5rem;
  }

  .exp-header {
    flex-direction: column;
    gap: 2px;
  }

  .masonry-grid { column-count: 2; column-gap: 4px; }
  .masonry-item { margin-bottom: 4px; }
  .highlight-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .highlight-value { font-size: 1.2rem; }
  .gif-compare { grid-template-columns: 1fr; }
  .gif-compare.three-col { grid-template-columns: 1fr; }
  .agent-list { grid-template-columns: 1fr; }
}