:root {
  --bg: #f7f4ee;
  --surface: rgba(255, 255, 255, 0.8);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --line: rgba(19, 44, 69, 0.12);
  --line-strong: rgba(19, 44, 69, 0.2);
  --text: #132c45;
  --muted: #566b82;
  --accent: #143a63;
  --accent-soft: #e2edf7;
  --warm: #9d5e2f;
  --warm-soft: #f3e1d1;
  --shadow: 0 22px 48px rgba(19, 44, 69, 0.1);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --container: 1120px;
  --heading-font: "Newsreader", "Noto Serif SC", "Songti SC", "STSong", serif;
  --body-font: "Manrope", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(157, 94, 47, 0.08), transparent 30%),
    radial-gradient(circle at 85% 15%, rgba(20, 58, 99, 0.08), transparent 24%),
    linear-gradient(180deg, #fbfaf7 0%, var(--bg) 48%, #f3efe7 100%);
  font-family: var(--body-font);
  line-height: 1.65;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.page-glow {
  position: fixed;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  filter: blur(48px);
  opacity: 0.25;
  pointer-events: none;
  z-index: -1;
}

.page-glow-left {
  left: -7rem;
  top: -6rem;
  background: rgba(157, 94, 47, 0.18);
}

.page-glow-right {
  right: -8rem;
  top: 18rem;
  background: rgba(20, 58, 99, 0.16);
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.section {
  padding: 4.5rem 0;
}

.site-header {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 40;
  width: 248px;
  height: 100vh;
  backdrop-filter: blur(18px);
  background: rgba(247, 244, 238, 0.9);
  border-right: 1px solid var(--line);
  transition: border-color 180ms ease, background 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(247, 244, 238, 0.96);
}

.header-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 1.5rem;
  min-height: 100%;
  padding: 1.6rem 0;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
}

.brand-title {
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.brand-sub {
  color: var(--muted);
  font-size: 0.82rem;
}

.header-controls {
  display: flex;
  flex: 1;
  width: 100%;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.site-nav {
  display: flex;
  width: 100%;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.9rem;
}

.site-nav a,
.menu-toggle {
  color: var(--muted);
  font-size: 0.94rem;
  transition: color 180ms ease;
}

.site-nav a:hover,
.menu-toggle:hover {
  color: var(--accent);
}

.site-nav a {
  font-weight: 700;
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 10px 20px rgba(19, 44, 69, 0.06);
  margin-top: auto;
}

.lang-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 700;
}

.lang-button.is-active {
  background: var(--accent);
  color: #f8fafc;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
  padding: 0.55rem 0.85rem;
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(19, 44, 69, 0.06);
}

.hero {
  padding-top: 1.6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  align-items: start;
}

.hero-main,
.profile-card,
.about-copy,
.interest-card,
.agenda-card,
.publication-card,
.project-panel,
.contact-panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow);
}

.hero-main {
  padding: 2rem;
  border-radius: var(--radius-xl);
  max-width: 900px;
}

.hero-kicker,
.section-kicker,
.card-kicker,
.publication-venue,
.project-name {
  margin: 0 0 0.95rem;
  color: var(--warm);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-name,
.section-heading h2,
.contact-panel h2 {
  margin: 0;
  font-family: var(--heading-font);
  font-size: clamp(2.9rem, 5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

.hero-alt-name {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
}

.hero-alt-name:empty,
.hero-alt-name[hidden] {
  display: none;
}

.hero-role {
  margin: 1.2rem 0 0;
  color: var(--accent);
  font-size: 1.08rem;
  font-weight: 800;
}

.hero-summary,
.section-lead,
.about-copy p,
.interest-note,
.agenda-card p,
.project-summary,
.metric-value,
.contact-panel p,
.fact-item dd {
  color: var(--muted);
}

.hero-summary {
  margin: 1rem 0 0;
  max-width: 44rem;
  font-size: 1.02rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.35rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.65rem;
  padding: 0.65rem 0.95rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}

.button:hover,
.publication-link:hover,
.section-link:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--accent);
  border-color: transparent;
  color: #f8fafc;
}

.button-secondary {
  background: rgba(255, 255, 255, 0.82);
  color: var(--accent);
}

.hero-side {
  display: none;
}

.portrait-card {
  overflow: hidden;
  border-radius: var(--radius-xl);
  background: var(--surface-strong);
  border: 1px solid rgba(255, 255, 255, 0.84);
  box-shadow: var(--shadow);
}

.portrait-card img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  object-position: 50% 24%;
}

.portrait-caption {
  margin: 0;
  padding: 0.9rem 1.1rem 1.1rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.profile-card,
.interest-card {
  padding: 1.45rem;
  border-radius: var(--radius-lg);
}

.profile-card-inline {
  margin-top: 1.2rem;
}

.fact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem 1.2rem;
  margin: 0;
}

.fact-item {
  display: grid;
  gap: 0.2rem;
}

.fact-item dt {
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.fact-item dd {
  margin: 0;
  font-size: 0.95rem;
}

.section-heading {
  margin-bottom: 1.8rem;
}

.section-heading h2,
.contact-panel h2 {
  font-size: clamp(2.4rem, 4vw, 3.8rem);
}

.section-lead {
  margin: 1rem 0 0;
  max-width: 48rem;
  font-size: 1rem;
}

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.72fr);
  gap: 1.2rem;
  align-items: start;
}

.about-copy {
  padding: 1.8rem;
  border-radius: var(--radius-xl);
}

.about-copy p {
  margin: 0;
  font-size: 0.99rem;
}

.about-copy p + p {
  margin-top: 1rem;
}

.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.interest-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.9rem;
  font-weight: 800;
}

.interest-divider {
  height: 1px;
  margin: 1.2rem 0;
  background: var(--line);
}

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

.agenda-card {
  padding: 1.5rem;
  border-radius: var(--radius-lg);
}

.agenda-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  background: var(--warm-soft);
  color: var(--warm);
  font-size: 0.88rem;
  font-weight: 800;
}

.agenda-card h3 {
  margin: 1rem 0 0;
  font-size: 1.35rem;
  line-height: 1.25;
}

.agenda-card p {
  margin: 0.95rem 0 0;
  font-size: 0.97rem;
}

.section-heading-split {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.section-link {
  display: inline-flex;
  align-items: center;
  min-height: 2.7rem;
  padding: 0.7rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.84);
  color: var(--accent);
  font-weight: 800;
  transition: transform 180ms ease, background 180ms ease;
}

.publication-list {
  display: grid;
  gap: 0.95rem;
}

.publication-card {
  display: grid;
  grid-template-columns: 6.2rem minmax(0, 1fr);
  gap: 1.2rem;
  padding: 1.35rem;
  border-radius: var(--radius-lg);
}

.publication-year {
  display: inline-flex;
  align-items: flex-start;
  justify-content: center;
  padding: 0.8rem 0.9rem;
  border-radius: 1rem;
  background: rgba(20, 58, 99, 0.08);
  color: var(--accent);
  font-size: 0.98rem;
  font-weight: 800;
}

.publication-venue {
  margin-bottom: 0.7rem;
}

.publication-title {
  margin: 0;
  font-size: 1.28rem;
  line-height: 1.35;
}

.publication-title-tag {
  display: inline-flex;
  align-items: center;
  margin-right: 0.65rem;
  margin-bottom: 0.3rem;
  padding: 0.26rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 800;
  vertical-align: middle;
}

.publication-tier-tag {
  display: inline-flex;
  align-items: center;
  margin-left: 0.65rem;
  margin-bottom: 0.3rem;
  padding: 0.26rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--warm-soft);
  color: var(--warm);
  font-size: 0.8rem;
  font-weight: 800;
  vertical-align: middle;
}

.publication-badges,
.publication-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.9rem;
}

.badge,
.publication-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  font-size: 0.84rem;
  font-weight: 800;
}

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

.badge-oral,
.badge-main {
  background: var(--warm-soft);
  color: var(--warm);
}

.publication-link {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.84);
  color: var(--accent);
  transition: transform 180ms ease, background 180ms ease;
}

.publication-link:hover {
  background: var(--accent-soft);
}

.publication-abstract {
  margin-top: 1rem;
  padding-top: 0.95rem;
  border-top: 1px solid var(--line);
}

.publication-abstract summary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 800;
  list-style: none;
}

.publication-abstract summary::-webkit-details-marker {
  display: none;
}

.publication-abstract summary::after {
  content: "+";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  border-radius: 50%;
  background: rgba(20, 58, 99, 0.08);
  color: var(--accent);
  font-size: 0.9rem;
  line-height: 1;
}

.publication-abstract[open] summary::after {
  content: "−";
}

.publication-abstract p {
  margin: 0.85rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.72;
}

.project-panel {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.7fr);
  gap: 1rem;
  padding: 1.7rem;
  border-radius: var(--radius-xl);
}

.project-name {
  margin-bottom: 0.7rem;
}

.project-panel h3 {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.28;
}

.project-summary {
  margin: 1rem 0 0;
}

.project-points {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.4rem;
  display: grid;
  gap: 0.7rem;
}

.project-points li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--muted);
}

.project-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72rem;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--warm);
}

.project-metrics {
  display: grid;
  gap: 0.85rem;
}

.metric-card {
  padding: 1rem;
  border-radius: 1rem;
  background: rgba(20, 58, 99, 0.06);
  border: 1px solid rgba(20, 58, 99, 0.08);
}

.metric-label {
  display: block;
  color: var(--warm);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-value {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.98rem;
  line-height: 1.55;
}

.contact-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;
  padding: 1.8rem;
  border-radius: var(--radius-xl);
}

.contact-actions {
  margin-top: 0;
}

.site-footer {
  margin-left: 272px;
  padding: 0 0 2.5rem;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.93rem;
}

.footer-inner a {
  color: var(--accent);
  font-weight: 800;
}

main {
  margin-left: 272px;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 560ms ease, transform 560ms ease;
}

.reveal-delay-1 {
  transition-delay: 100ms;
}

.reveal-delay-2 {
  transition-delay: 200ms;
}

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

@media (max-width: 1040px) {
  .site-header {
    position: sticky;
    top: 0;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid transparent;
  }

  .header-inner {
    min-height: 5rem;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0;
  }

  .header-controls {
    width: auto;
    flex: initial;
    flex-direction: row;
    align-items: center;
  }

  .site-nav {
    width: auto;
    flex-direction: row;
    align-items: center;
    gap: 1.2rem;
  }

  .lang-toggle {
    margin-top: 0;
  }

  main,
  .site-footer {
    margin-left: 0;
  }

  .hero-grid,
  .about-grid,
  .project-panel,
  .contact-panel {
    grid-template-columns: 1fr;
  }

  .agenda-grid {
    grid-template-columns: 1fr;
  }

  .contact-actions {
    margin-top: 1rem;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 3.8rem 0;
  }

  .header-inner {
    min-height: 4.6rem;
    flex-wrap: wrap;
  }

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

  .header-controls {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.9rem;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.9rem;
    padding: 1rem;
    border: 1px solid var(--line);
    border-radius: 1rem;
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 18px 34px rgba(19, 44, 69, 0.08);
  }

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

  .lang-toggle {
    align-self: flex-end;
  }

  .hero-main,
  .about-copy,
  .interest-card,
  .agenda-card,
  .publication-card,
  .project-panel,
  .contact-panel {
    padding: 1.35rem;
  }

  .hero-name,
  .section-heading h2,
  .contact-panel h2 {
    font-size: clamp(2.3rem, 12vw, 3.2rem);
  }

  .fact-grid {
    grid-template-columns: 1fr;
  }

  .section-heading-split {
    align-items: start;
    flex-direction: column;
  }

  .publication-card {
    grid-template-columns: 1fr;
    gap: 0.9rem;
  }

  .hero-actions,
  .contact-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .button,
  .section-link {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}