:root {
  --ink: #15191d;
  --muted: #5d6772;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --line: #d9dedb;
  --teal: #0f766e;
  --teal-dark: #104f4a;
  --coral: #c75b4e;
  --amber: #c48a24;
  --violet: #5b5f97;
  --shadow: 0 20px 60px rgba(21, 25, 29, 0.12);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.6;
}

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

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

.site-header {
  align-items: center;
  backdrop-filter: blur(20px);
  background: rgba(251, 250, 247, 0.86);
  border-bottom: 1px solid rgba(217, 222, 219, 0.72);
  display: flex;
  height: 72px;
  justify-content: space-between;
  left: 0;
  padding: 0 clamp(20px, 5vw, 72px);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 12px;
}

.brand-mark {
  align-items: center;
  background: var(--ink);
  border-radius: 6px;
  color: var(--paper);
  display: inline-flex;
  font-size: 13px;
  height: 36px;
  justify-content: center;
  width: 36px;
}

.nav {
  display: flex;
  gap: 8px;
}

.nav a {
  border-radius: 6px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  padding: 10px 12px;
}

.nav a:hover {
  background: rgba(15, 118, 110, 0.09);
  color: var(--teal-dark);
}

.menu-button {
  background: transparent;
  border: 0;
  display: none;
  height: 40px;
  padding: 0;
  width: 40px;
}

.menu-button span {
  background: var(--ink);
  display: block;
  height: 2px;
  margin: 7px auto;
  width: 22px;
}

.hero {
  display: grid;
  min-height: 620px;
  overflow: hidden;
  padding: 112px clamp(20px, 5vw, 72px) 48px;
  place-items: center;
  position: relative;
}

.hero::after {
  background: linear-gradient(90deg, rgba(251, 250, 247, 0.98) 0%, rgba(251, 250, 247, 0.86) 42%, rgba(251, 250, 247, 0.16) 100%);
  content: "";
  inset: 0;
  position: absolute;
}

.hero-media {
  inset: 0;
  position: absolute;
}

.hero-media img {
  height: 100%;
  object-fit: cover;
  object-position: center;
  width: 100%;
}

.hero-content {
  justify-self: start;
  max-width: 760px;
  position: relative;
  width: min(100%, 760px);
  z-index: 1;
}

.compact-hero {
  place-items: end start;
}

.profile-panel {
  align-items: center;
  display: grid;
  gap: 28px;
  grid-template-columns: 172px minmax(0, 680px);
  position: relative;
  z-index: 1;
}

.profile-photo {
  aspect-ratio: 3 / 4;
  border: 1px solid rgba(21, 25, 29, 0.12);
  border-radius: 8px;
  box-shadow: var(--shadow);
  height: auto;
  object-fit: cover;
  object-position: center top;
  width: 172px;
}

.profile-summary {
  max-width: 720px;
}

.eyebrow,
.section-kicker {
  color: var(--coral);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 12px;
  text-transform: uppercase;
}

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

h1 {
  font-size: clamp(36px, 5vw, 56px);
  letter-spacing: 0;
  line-height: 1.02;
  margin-bottom: 14px;
}

h2 {
  font-size: clamp(30px, 5vw, 56px);
  letter-spacing: 0;
  line-height: 1.05;
  margin-bottom: 0;
}

h3 {
  font-size: 19px;
  line-height: 1.25;
  margin-bottom: 8px;
}

.hero-subtitle {
  color: #313a40;
  font-size: clamp(18px, 2.5vw, 25px);
  max-width: 660px;
}

.profile-lines,
.interest-list {
  color: #313a40;
  display: grid;
  gap: 5px;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.profile-lines li,
.interest-list li {
  position: relative;
}

.profile-lines a {
  color: var(--teal-dark);
  font-weight: 800;
}

.hero-actions,
.contact-links,
.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.button,
.contact-links a,
.paper-links a {
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 6px;
  display: inline-flex;
  font-weight: 800;
  min-height: 44px;
  padding: 10px 16px;
}

.button.primary {
  background: var(--teal);
  border-color: var(--teal);
  color: white;
}

.button.secondary,
.contact-links a,
.paper-links a {
  background: rgba(255, 255, 255, 0.76);
}

.quick-facts {
  border-top: 1px solid rgba(21, 25, 29, 0.12);
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 44px 0 0;
  padding-top: 18px;
}

.quick-facts dt {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.quick-facts dd {
  font-weight: 800;
  margin: 0;
}

.section {
  padding: 92px clamp(20px, 5vw, 72px);
}

.intro-band {
  background: var(--ink);
  color: white;
}

.about-section {
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  border-top: 1px solid var(--line);
}

.section-grid,
.split-section {
  display: grid;
  gap: clamp(32px, 6vw, 96px);
  grid-template-columns: minmax(220px, 0.85fr) minmax(0, 1.35fr);
}

.intro-copy {
  color: rgba(255, 255, 255, 0.78);
  font-size: 18px;
}

.about-copy {
  color: #323b42;
  font-size: 17px;
}

.about-copy p {
  margin-bottom: 18px;
}

.interest-heading {
  color: var(--ink);
  font-size: 15px;
  font-weight: 900;
  margin-bottom: 8px;
}

.interest-list {
  color: var(--muted);
  gap: 8px;
  margin-bottom: 0;
}

.interest-list li {
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.section-heading {
  align-items: end;
  display: flex;
  gap: 24px;
  justify-content: space-between;
  margin-bottom: 32px;
}

.research-grid,
.project-grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.research-card,
.project-card,
.publication-card,
.timeline-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.research-card,
.project-card {
  min-height: 230px;
  padding: 24px;
}

.card-number {
  color: var(--amber);
  display: block;
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 42px;
}

.research-card p,
.project-card p,
.publication-card p,
.timeline-item p,
.news-list p {
  color: var(--muted);
}

.news-list {
  counter-reset: news;
  display: grid;
  gap: 12px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.news-list li {
  border-top: 1px solid var(--line);
  display: grid;
  gap: 16px;
  grid-template-columns: 110px minmax(0, 1fr);
  padding: 18px 0;
}

.news-date {
  color: var(--teal-dark);
  font-size: 14px;
  font-weight: 900;
}

.filter-group {
  align-items: center;
  background: #ecece5;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  gap: 4px;
  padding: 4px;
}

.filter-button {
  background: transparent;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 14px;
  font-weight: 800;
  min-height: 36px;
  padding: 7px 12px;
}

.filter-button.active {
  background: var(--panel);
  box-shadow: 0 8px 22px rgba(21, 25, 29, 0.1);
  color: var(--ink);
}

.publication-list {
  display: grid;
  gap: 14px;
}

.publication-card {
  display: grid;
  gap: 18px;
  grid-template-columns: 96px minmax(0, 1fr) minmax(220px, 32%);
  padding: 20px;
}

.paper-meta {
  align-content: start;
  display: grid;
  gap: 12px;
}

.paper-year {
  color: var(--coral);
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
}

.paper-venue {
  color: var(--muted);
  display: block;
  font-size: 13px;
  font-weight: 900;
  margin-top: 8px;
}

.paper-venue-line {
  color: #3f484f;
  font-style: italic;
  font-weight: 650;
  margin-bottom: 0;
}

.paper-citations {
  background: #f7eee7;
  border: 1px solid #ead5ca;
  border-radius: 999px;
  color: #8f4639;
  display: inline-flex;
  font-size: 12px;
  font-weight: 900;
  margin-top: 14px;
  padding: 5px 10px;
}

.paper-authors {
  color: var(--muted);
  margin-bottom: 8px;
}

.paper-authors strong {
  color: var(--ink);
  font-weight: 900;
}

.paper-main {
  min-width: 0;
}

.paper-figure {
  align-self: start;
  aspect-ratio: 16 / 9;
  background: white;
  border: 1px solid var(--line);
  border-radius: 6px;
  height: auto;
  object-fit: contain;
  padding: 6px;
  width: 100%;
}

.paper-links {
  margin-top: 14px;
}

.paper-links a {
  font-size: 13px;
  min-height: 34px;
  padding: 6px 10px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: 18px;
}

.tag {
  background: #eef6f4;
  border: 1px solid #cde4df;
  border-radius: 999px;
  color: var(--teal-dark);
  font-size: 12px;
  font-weight: 800;
  padding: 5px 10px;
}

.project-card {
  border-top: 5px solid var(--violet);
}

.timeline {
  display: grid;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  gap: 0;
  overflow: hidden;
}

.timeline.compact {
  gap: 10px;
}

.timeline-item {
  border: 0;
  border-radius: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: 150px minmax(0, 1fr);
  padding: 0;
}

.timeline-item + .timeline-item {
  border-top: 1px solid var(--line);
}

.timeline-date {
  background: #f8f8f4;
  border-right: 1px solid var(--line);
  color: var(--amber);
  display: block;
  font-weight: 900;
  padding: 16px 18px;
}

.timeline-item > div {
  padding: 16px 18px;
}

.timeline-lines {
  display: grid;
  gap: 4px;
}

.achievement-list {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  display: grid;
  overflow: hidden;
}

.achievement-group {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
}

.achievement-group + .achievement-group {
  border-top: 1px solid var(--line);
}

.achievement-category {
  align-items: start;
  background: #f8f8f4;
  border-right: 1px solid var(--line);
  color: var(--teal-dark);
  display: grid;
  font-weight: 900;
  line-height: 1.25;
  padding: 14px 16px;
}

.achievement-items p {
  border-top: 1px solid var(--line);
  color: #374047;
  margin: 0;
  padding: 13px 18px;
}

.achievement-items p:first-child {
  border-top: 0;
}

.cv-downloads {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 28px;
}

.cv-downloads a {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--teal-dark);
  display: inline-flex;
  font-weight: 900;
  min-height: 42px;
  padding: 9px 13px;
}

.contact-section {
  align-items: center;
  background: var(--teal-dark);
  color: white;
  display: flex;
  gap: 32px;
  justify-content: space-between;
  padding: 72px clamp(20px, 5vw, 72px);
}

.contact-section .section-kicker {
  color: #f1ba63;
}

.contact-links a {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.24);
  color: white;
}

.site-footer {
  align-items: center;
  color: var(--muted);
  display: flex;
  font-size: 14px;
  justify-content: space-between;
  padding: 28px clamp(20px, 5vw, 72px);
}

@media (max-width: 900px) {
  .nav {
    background: rgba(251, 250, 247, 0.98);
    border-bottom: 1px solid var(--line);
    display: none;
    flex-direction: column;
    left: 0;
    padding: 12px 20px 20px;
    position: absolute;
    top: 72px;
    width: 100%;
  }

  .nav.open {
    display: flex;
  }

  .menu-button {
    display: block;
  }

  .hero {
    min-height: 760px;
  }

  .hero::after {
    background: linear-gradient(180deg, rgba(251, 250, 247, 0.98) 0%, rgba(251, 250, 247, 0.9) 54%, rgba(251, 250, 247, 0.42) 100%);
  }

  .hero-media img {
    object-position: 58% center;
  }

  .section-grid,
  .split-section,
  .research-grid,
  .project-grid,
  .publication-card,
  .timeline-item,
  .achievement-group {
    grid-template-columns: 1fr;
  }

  .achievement-category {
    border-bottom: 1px solid var(--line);
    border-right: 0;
  }

  .timeline-date {
    border-bottom: 1px solid var(--line);
    border-right: 0;
  }

  .paper-figure {
    max-width: 520px;
  }

  .profile-panel {
    align-items: start;
    grid-template-columns: 132px minmax(0, 1fr);
  }

  .profile-photo {
    width: 132px;
  }

  .section-heading,
  .contact-section,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .quick-facts {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .hero {
    min-height: 820px;
    padding-top: 104px;
  }

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

  .profile-photo {
    width: 150px;
  }

  .publication-heading {
    align-items: stretch;
  }

  .filter-group {
    overflow-x: auto;
  }

  .news-list li {
    grid-template-columns: 1fr;
  }

  .section {
    padding-bottom: 68px;
    padding-top: 68px;
  }
}