:root {
  --bg: #f7f8f6;
  --surface: #ffffff;
  --surface-muted: #eef3f3;
  --text: #17211f;
  --muted: #5c6865;
  --line: #dce4e2;
  --accent: #0b7a75;
  --accent-dark: #075f5b;
  --accent-soft: #dcefed;
  --shadow: 0 16px 40px rgba(23, 33, 31, 0.08);
  --radius: 8px;
  color-scheme: light;
  font-family: "Segoe UI", Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: hidden;
}

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

a:hover {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  background: var(--text);
  color: #fff;
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(220, 228, 226, 0.86);
  background: rgba(247, 248, 246, 0.92);
  backdrop-filter: blur(14px);
}

.nav,
.section,
.site-footer {
  width: min(1080px, calc(100% - 32px));
  margin-inline: auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  gap: 1rem;
}

.brand {
  color: var(--text);
  font-weight: 750;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
}

.nav-links a {
  color: var(--muted);
}

.nav-links a:hover {
  color: var(--accent-dark);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  padding: 0.45rem 0.65rem;
  font: inherit;
}

.section {
  padding: 56px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 56px;
  align-items: center;
  min-height: calc(100vh - 120px);
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero-copy,
.profile-panel {
  width: 100%;
  max-width: 100%;
  min-width: 0;
}

.eyebrow {
  margin: 0 0 0.5rem;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0.75rem;
  font-size: clamp(2.7rem, 8vw, 5.7rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(1.7rem, 4vw, 2.45rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 0.35rem;
  font-size: 1.08rem;
  line-height: 1.35;
  letter-spacing: 0;
}

.lead {
  width: 100%;
  min-width: 0;
  max-width: 760px;
  margin-bottom: 1rem;
  color: var(--text);
  font-size: clamp(1.18rem, 2.2vw, 1.45rem);
  line-height: 1.45;
  overflow-wrap: break-word;
}

.bio {
  width: 100%;
  min-width: 0;
  max-width: 740px;
  color: var(--muted);
  overflow-wrap: break-word;
}

.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.35rem;
}

.profile-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 0.55rem;
  width: 100%;
  max-width: 760px;
  margin-top: 1.35rem;
}

.contact-links {
  max-width: 820px;
}

.link-row a,
.profile-links a,
.paper-links a,
.paper-links button,
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--accent-dark);
  padding: 0.36rem 0.7rem;
  font-size: 0.94rem;
  font-weight: 700;
  font-family: inherit;
}

.profile-links a {
  justify-content: flex-start;
  min-width: 0;
}

.profile-links a span:last-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.link-row a:hover,
.profile-links a:hover,
.paper-links a:hover,
.paper-links button:hover,
.text-link:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  text-decoration: none;
}

.cite-button {
  cursor: pointer;
}

.link-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  flex: 0 0 auto;
  color: currentColor;
}

.link-icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.text-icon {
  border: 1.6px solid currentColor;
  border-radius: 4px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.56rem;
  font-weight: 850;
  letter-spacing: 0;
  line-height: 1;
}

.linkedin-icon {
  border: 1.8px solid currentColor;
  border-radius: 3px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.64rem;
  font-weight: 850;
  line-height: 1;
}

.profile-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.portrait {
  position: relative;
  aspect-ratio: 1 / 1;
  background: #fff;
  padding: 0.8rem;
}

.portrait img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
}

.portrait-fallback {
  position: absolute;
  inset: 0;
  z-index: 0;
  display: grid;
  place-items: center;
  color: var(--accent-dark);
  font-size: 4rem;
  font-weight: 800;
}

.quick-facts {
  margin: 0;
  padding: 1.1rem;
}

.quick-facts div {
  display: grid;
  grid-template-columns: 104px minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.quick-facts div:last-child {
  border-bottom: 0;
}

.quick-facts dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.quick-facts dd {
  margin: 0;
  color: var(--text);
}

.quick-facts a {
  color: var(--text);
  text-decoration: none;
}

.quick-facts a:hover {
  color: var(--accent-dark);
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 1.35rem;
}

.section-heading.with-action {
  flex-direction: row;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
}

.heading-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.55rem;
}

.section-note {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
}

.panel-actions {
  padding: 0 1.1rem 1.1rem;
}

.panel-link {
  width: 100%;
  justify-content: center;
}

.news-section {
  padding-top: 24px;
}

.news-list {
  display: grid;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.news-list li {
  display: grid;
  grid-template-columns: 108px minmax(0, 1fr);
  gap: 1rem;
  border-top: 1px solid var(--line);
  padding-top: 0.7rem;
}

.news-list time {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 750;
}

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

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

.interest,
.project {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.1rem;
}

.interest p,
.project p {
  margin-bottom: 0;
  color: var(--muted);
}

.project-type,
.paper-venue {
  margin-bottom: 0.3rem;
  color: var(--accent-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

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

.publication {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1rem;
}

.publication-list.compact .publication {
  grid-template-columns: 180px minmax(0, 1fr);
}

.paper-thumb {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface-muted);
  aspect-ratio: 4 / 3;
}

.paper-thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
}

.paper-body p {
  margin-bottom: 0.55rem;
}

.paper-body h3 a {
  color: var(--text);
}

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

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.8rem;
}

.paper-links a,
.paper-links button {
  min-height: 32px;
  padding: 0.25rem 0.55rem;
  font-size: 0.86rem;
}

.contact-section {
  border-top: 1px solid var(--line);
}

.contact-section > p {
  max-width: 760px;
  color: var(--muted);
}

.collaboration-form {
  max-width: 820px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.1rem;
}

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

.form-grid label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.form-grid input,
.form-grid select,
.form-grid textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--text);
  font: inherit;
  padding: 0.62rem 0.7rem;
  text-transform: none;
}

.form-grid textarea {
  resize: vertical;
}

.form-grid input:focus,
.form-grid select:focus,
.form-grid textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.form-full {
  grid-column: 1 / -1;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.form-actions .text-link {
  cursor: pointer;
}

.form-note {
  max-width: 680px;
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.page-title {
  padding-bottom: 24px;
}

.year-block {
  border-top: 1px solid var(--line);
  padding-top: 1.1rem;
}

.year-block + .year-block {
  margin-top: 1.5rem;
}

.citation-list {
  margin: 0;
  padding-left: 1.2rem;
}

.citation-list li + li {
  margin-top: 0.8rem;
}

.citation-list .cite-button {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-left: 0.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--accent-dark);
  padding: 0.1rem 0.48rem;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 750;
}

.citation-list .cite-button:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

body.modal-open {
  overflow: hidden;
}

.cite-modal {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(23, 33, 31, 0.46);
}

.cite-modal[hidden] {
  display: none;
}

.cite-dialog {
  width: min(760px, 100%);
  max-height: min(780px, calc(100vh - 32px));
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 1.2rem;
}

.cite-dialog-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.7rem;
}

.cite-dialog h2 {
  font-size: 1.25rem;
}

.cite-close,
.cite-copy {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--accent-dark);
  cursor: pointer;
  font: inherit;
  font-weight: 750;
}

.cite-close {
  min-height: 32px;
  padding: 0.2rem 0.55rem;
}

.cite-copy {
  min-height: 36px;
  padding: 0.32rem 0.75rem;
}

.cite-close:hover,
.cite-copy:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.cite-text {
  color: var(--muted);
}

.cite-bibtex {
  overflow: auto;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f3f6f5;
  padding: 1rem;
  font-size: 0.86rem;
  line-height: 1.5;
  white-space: pre;
}

.cite-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.35rem 0 2rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 860px) {
  .nav {
    align-items: flex-start;
    padding: 0.9rem 0;
    min-height: auto;
  }

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

  .nav-links {
    position: absolute;
    inset: 60px 16px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 0.75rem;
  }

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

  .nav-links a {
    padding: 0.45rem 0.3rem;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    min-height: auto;
  }

  .profile-panel {
    max-width: 360px;
  }

  .interest-grid,
  .project-grid {
    grid-template-columns: 1fr;
  }

  .publication,
  .publication-list.compact .publication {
    grid-template-columns: 1fr;
  }

  .paper-thumb {
    max-width: 360px;
  }
}

@media (max-width: 560px) {
  .nav,
  .section,
  .site-footer {
    width: calc(100% - 24px);
    max-width: 1080px;
  }

  .section {
    padding: 40px 0;
  }

  .hero {
    padding-top: 32px;
  }

  .lead {
    max-width: 100%;
    font-size: 1.12rem;
    overflow-wrap: anywhere;
  }

  .bio {
    max-width: 100%;
    font-size: 0.98rem;
    overflow-wrap: anywhere;
  }

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

  .heading-actions {
    justify-content: flex-start;
  }

  .news-list li,
  .quick-facts div,
  .form-grid {
    grid-template-columns: 1fr;
    gap: 0.2rem;
  }

  .profile-links {
    grid-template-columns: 1fr;
  }

  .form-grid {
    gap: 0.9rem;
  }
}