:root {
  --bg: #f7f4ee;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-strong: #ffffff;
  --surface-soft: #f1ece3;
  --text: #18212b;
  --muted: #5b6674;
  --line: #ddd6cb;
  --link: #0d62ac;
  --link-hover: #093d6d;
  --header-bg: rgba(247, 244, 238, 0.9);
  --mobile-nav-bg: rgba(250, 247, 241, 0.98);
  --menu-line: #18212b;
  --about-text: #1f2732;
  --meta-text: #313b48;
  --accent: #141a24;
  --accent-soft: #eef4fb;
  --tag-bg: #f5f7fa;
  --tag-text: #556171;
  --success-bg: #edf8f0;
  --success-text: #2d6e41;
  --warning-bg: #fff3df;
  --warning-text: #8a5b00;
  --shadow: 0 20px 44px rgba(24, 33, 43, 0.08);
  --max-width: 1120px;
}

[data-theme="dark"] {
  --bg: #0f141b;
  --surface: rgba(22, 28, 38, 0.92);
  --surface-strong: #171d27;
  --surface-soft: #202838;
  --text: #ebeff6;
  --muted: #aab2c1;
  --line: #2d3849;
  --link: #8cc0ff;
  --link-hover: #b4d5ff;
  --header-bg: rgba(15, 20, 27, 0.9);
  --mobile-nav-bg: rgba(20, 25, 34, 0.98);
  --menu-line: #ebeff6;
  --about-text: #dce3ee;
  --meta-text: #c8d1df;
  --accent: #f4f7fb;
  --accent-soft: #212b39;
  --tag-bg: #1c2330;
  --tag-text: #c6d1e0;
  --success-bg: rgba(44, 90, 59, 0.28);
  --success-text: #b7ebc6;
  --warning-bg: rgba(122, 92, 28, 0.28);
  --warning-text: #ffe0a1;
  --shadow: 0 24px 50px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Roboto", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(72, 113, 167, 0.08), transparent 34%),
    radial-gradient(circle at top right, rgba(196, 157, 86, 0.08), transparent 30%),
    var(--bg);
  line-height: 1.6;
  padding-top: 66px;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  color: var(--link-hover);
}

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

h1,
h2,
h3 {
  margin: 0;
  font-family: "Noto Serif", Georgia, serif;
  font-weight: 700;
}

h1 {
  font-size: clamp(1.85rem, 3vw, 2.3rem);
  margin-bottom: 0.7rem;
}

h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.65rem);
  margin-bottom: 0.95rem;
}

p {
  margin: 0;
  padding-bottom: 0.55rem;
  color: var(--text);
}

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 0;
}

.container {
  width: min(var(--max-width), 92vw);
  margin: 0 auto;
}

.fixed-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
}

.site-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.header-row {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.title-block {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  min-width: 0;
}

.brand {
  font-family: "Noto Serif", Georgia, serif;
  font-size: 1.18rem;
  color: var(--text);
  font-weight: 700;
  white-space: nowrap;
}

.subtitle {
  padding-bottom: 0;
  color: var(--muted);
  font-size: 0.87rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.24rem;
}

.site-nav a {
  color: var(--text);
  font-size: 0.93rem;
  font-weight: 600;
  padding: 0.45rem 0.78rem;
  border-radius: 999px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.site-nav a:hover,
.site-nav a.active {
  color: var(--link);
  background: var(--surface-soft);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  margin: 4px 0;
  background: var(--menu-line);
  border-radius: 2px;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text);
  border-radius: 999px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--link);
  border-color: var(--link);
}

.theme-toggle .icon {
  width: 18px;
  height: 18px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.theme-toggle .icon-moon path {
  fill: currentColor;
  stroke: none;
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.main-content {
  padding: 0 0 0.8rem;
}

.section {
  padding: 1.6rem 0;
}

.about-layout {
  display: grid;
  grid-template-columns: 290px 1fr;
  gap: 2rem;
  align-items: start;
}

.photo-wrap {
  width: 100%;
}

.photo-stack {
  width: 100%;
  max-width: 290px;
}

.photo {
  width: 100%;
  max-width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.photo-dark {
  display: none;
}

[data-theme="dark"] .photo-light {
  display: none;
}

[data-theme="dark"] .photo-dark {
  display: block;
}

.photo-contact {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.48rem;
}

.photo-contact a {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.2;
}

.photo-contact a:hover {
  color: var(--link);
}

.photo-contact .contact-icon {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  fill: currentColor;
}

.about-text p {
  color: var(--about-text);
}

.meta-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
  margin-top: 0.45rem;
}

.meta-grid h2 {
  font-size: 1.04rem;
  margin-bottom: 0.55rem;
}

.meta-grid p {
  color: var(--meta-text);
  font-size: 0.95rem;
  padding-bottom: 0.4rem;
}

.no-bullet {
  margin: 0;
  padding: 0;
  list-style: none;
}

.entry-list {
  display: grid;
  gap: 0.85rem;
}

.entry-list li {
  margin: 0;
}

.entry-list p {
  padding-bottom: 0.2rem;
}

.jump-link {
  margin-top: 0.7rem;
  font-size: 0.95rem;
}

.cv-viewer {
  width: 100%;
  min-height: 760px;
  border: 1px solid var(--line);
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 0.8rem;
}

.footer-row {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.footer-row p {
  color: var(--muted);
  font-size: 0.88rem;
  padding-bottom: 0;
}

.page-main {
  padding: 1.7rem 0 1.1rem;
}

.page-intro {
  margin-bottom: 1.15rem;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
}

.page-intro-copy {
  max-width: 720px;
}

.page-intro-copy p {
  color: var(--muted);
  padding-bottom: 0;
}

.page-intro-link,
.toolbar-link,
.paper-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-intro-link:hover,
.toolbar-link:hover,
.paper-links a:hover {
  color: var(--link);
  border-color: var(--link);
  background: var(--surface-soft);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.stats-grid-publications {
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
}

.stat-card,
.timeline-card,
.publication-toolbar,
.publication-card,
.honor-card,
.contact-card,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.stat-card {
  padding: 1.35rem 1.45rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.stat-card-emphasis {
  background:
    linear-gradient(135deg, rgba(13, 98, 172, 0.08), rgba(20, 26, 36, 0.02)),
    var(--surface);
}

.stat-number {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.05em;
  overflow-wrap: anywhere;
}

.stat-label {
  color: var(--muted);
  font-size: 0.95rem;
}

.pub-dashboard {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem;
  margin-bottom: 1rem;
}

.section-heading h2 {
  font-size: 1.2rem;
  margin-bottom: 0;
}

.section-heading p {
  color: var(--muted);
  font-size: 0.92rem;
  padding-bottom: 0;
}

.timeline-card {
  padding: 1.3rem 1.45rem 1.4rem;
}

.timeline-list {
  display: grid;
  gap: 0.9rem;
}

.timeline-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 0.9rem;
  align-items: center;
}

.timeline-year {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.94rem;
}

.timeline-track {
  height: 24px;
  border-radius: 999px;
  background: var(--surface-soft);
  overflow: hidden;
  position: relative;
}

.timeline-bar {
  height: 100%;
  min-width: 24px;
  border-radius: 999px;
  background: linear-gradient(90deg, #10151d, #273244);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.45rem;
}

[data-theme="dark"] .timeline-bar {
  background: linear-gradient(90deg, #edf2fb, #c9d4e5);
}

.timeline-value {
  min-width: 18px;
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}

[data-theme="dark"] .timeline-value {
  color: #111318;
}

.publication-toolbar {
  padding: 1.2rem 1.3rem;
  margin-bottom: 1.15rem;
}

.toolbar-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.95rem;
}

.toolbar-head h2 {
  font-size: 1.15rem;
  margin-bottom: 0.2rem;
}

.toolbar-head p {
  color: var(--muted);
  font-size: 0.92rem;
  padding-bottom: 0;
}

.filter-group,
.toggle-group,
.tag-row,
.publication-badges,
.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.toggle-group {
  margin-top: 0.9rem;
}

.filter-chip,
.toggle-chip {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface-strong);
  color: var(--text);
  border-radius: 999px;
  padding: 0.62rem 0.95rem;
  font: inherit;
  font-size: 0.91rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.filter-chip:hover,
.toggle-chip:hover {
  border-color: var(--link);
  color: var(--link);
}

.filter-chip.active,
.toggle-chip.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

[data-theme="dark"] .filter-chip.active,
[data-theme="dark"] .toggle-chip.active {
  color: #111318;
}

.publication-results {
  display: grid;
  gap: 1rem;
}

.pub-year-block {
  display: grid;
  gap: 0.7rem;
}

.pub-year-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.8rem;
}

.pub-year-header h2 {
  margin-bottom: 0;
}

.pub-year-header p {
  color: var(--muted);
  font-size: 0.92rem;
  padding-bottom: 0;
}

.publication-list {
  display: grid;
  gap: 0.85rem;
}

.publication-card {
  padding: 1.2rem 1.3rem;
}

.publication-card h3 {
  font-size: 1.04rem;
  line-height: 1.45;
  margin-bottom: 0.45rem;
}

.publication-card .authors {
  color: var(--text);
  font-size: 0.95rem;
  padding-bottom: 0.35rem;
}

.publication-venue {
  color: var(--text);
  font-size: 0.94rem;
  font-style: italic;
  padding-bottom: 0.15rem;
}

.publication-meta {
  color: var(--muted);
  font-size: 0.9rem;
  padding-bottom: 0.8rem;
}

.tag-row {
  margin-bottom: 0.95rem;
}

.tag-chip {
  padding: 0.4rem 0.72rem;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.8rem;
  font-weight: 500;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0.38rem 0.72rem;
  border-radius: 999px;
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.79rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.publication-badges {
  margin-bottom: 0.85rem;
}

.badge-reviewed {
  background: var(--accent);
  color: var(--bg);
}

[data-theme="dark"] .badge-reviewed {
  color: #111318;
}

.badge-preprint {
  background: var(--accent-soft);
  color: var(--link);
}

.badge-first-author {
  background: var(--success-bg);
  color: var(--success-text);
}

.badge-status {
  background: #eef1f5;
  color: #415067;
}

[data-theme="dark"] .badge-status {
  background: #252e3b;
  color: #d8e0ee;
}

.badge-accent {
  background: var(--warning-bg);
  color: var(--warning-text);
}

.paper-links {
  margin-top: 0.2rem;
}

.contact-card,
.empty-state {
  padding: 1.2rem 1.3rem;
}

.contact-card p,
.empty-state p {
  padding-bottom: 0;
}

.empty-state h2 {
  font-size: 1.08rem;
  margin-bottom: 0.45rem;
}

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

.honor-card {
  padding: 1.35rem 1.4rem;
  min-height: 190px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 0.6rem;
}

.honor-year {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding-bottom: 0;
}

.honor-card h2 {
  font-size: 1.18rem;
  margin-bottom: 0;
}

.honor-org {
  color: var(--meta-text);
  font-size: 0.96rem;
  padding-bottom: 0;
}

.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

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

.delay-1 {
  transition-delay: 0.08s;
}

.delay-2 {
  transition-delay: 0.16s;
}

@media (max-width: 960px) {
  .subtitle {
    display: none;
  }

  .meta-grid {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .about-layout {
    grid-template-columns: 180px 1fr;
    gap: 1.2rem;
  }

  .photo {
    max-width: 180px;
  }
}

@media (max-width: 760px) {
  body {
    padding-top: 60px;
  }

  .header-row {
    min-height: 60px;
  }

  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: 60px;
    right: 4vw;
    left: 4vw;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--mobile-nav-bg);
    padding: 0.5rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    box-shadow: var(--shadow);
  }

  .site-nav a {
    padding: 0.62rem 0.72rem;
    border-radius: 12px;
  }

  .site-nav.open {
    display: flex;
  }

  .about-layout,
  .stats-grid,
  .stats-grid-publications,
  .honor-board {
    grid-template-columns: 1fr;
  }

  .photo-wrap {
    width: 160px;
  }

  .page-intro,
  .toolbar-head,
  .pub-year-header,
  .section-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .timeline-row {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 0.7rem;
  }

  .publication-toolbar,
  .timeline-card,
  .publication-card,
  .stat-card,
  .honor-card,
  .contact-card,
  .empty-state {
    padding: 1.1rem;
  }

  .cv-viewer {
    min-height: 520px;
  }
}