:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --surface-muted: #edf2f4;
  --ink: #1c2430;
  --muted: #64707f;
  --line: #d8e0e6;
  --teal: #186b72;
  --teal-dark: #0f4d54;
  --gold: #b87918;
  --rust: #a34f2f;
  --shadow: 0 18px 50px rgba(28, 36, 48, 0.12);
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 82% 4%, rgba(184, 121, 24, 0.12), transparent 250px),
    linear-gradient(180deg, rgba(24, 107, 114, 0.09), transparent 460px),
    var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration-color: rgba(24, 107, 114, 0.38);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--teal-dark);
  text-decoration-color: currentColor;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 100;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--ink);
  color: #ffffff;
  font-weight: 760;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(14px);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 760;
  text-decoration: none;
}

.brand-mark {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--ink);
  color: var(--surface);
  font-size: 0.8rem;
  letter-spacing: 0;
}

.nav {
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(216, 224, 230, 0.82);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 30px rgba(28, 36, 48, 0.08);
}

.nav a {
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
  white-space: nowrap;
}

.nav a:hover {
  background: rgba(24, 107, 114, 0.09);
  color: var(--teal-dark);
}

.nav a.active {
  background: rgba(24, 107, 114, 0.12);
  color: var(--teal-dark);
}

main {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.75fr);
  gap: 42px;
  min-height: 640px;
  align-items: center;
  padding: 44px 0 62px;
}

.hero-copy {
  max-width: 780px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 780;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
h4,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: clamp(3rem, 7vw, 5.4rem);
  line-height: 0.9;
  letter-spacing: 0;
}

.hero-lede {
  max-width: 680px;
  margin-bottom: 30px;
  color: #44515f;
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border-radius: 8px;
  font-weight: 760;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button.primary {
  background: var(--teal-dark);
  color: #ffffff;
}

.button.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.74);
  color: var(--ink);
}

.button:hover {
  transform: translateY(-1px);
}

.profile-panel {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  min-height: 520px;
  padding: 24px;
  border: 1px solid rgba(216, 224, 230, 0.94);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.94), rgba(237, 242, 244, 0.84)),
    var(--surface);
  box-shadow: var(--shadow);
}

.profile-image {
  width: 150px;
  height: 200px;
  border: 3px solid rgba(255, 255, 255, 0.94);
  border-radius: 8px;
  object-fit: cover;
  object-position: center top;
  box-shadow: 0 14px 32px rgba(28, 36, 48, 0.16);
}

.profile-title {
  display: grid;
  gap: 4px;
}

.profile-title span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.profile-title strong {
  font-size: 1.1rem;
  line-height: 1.3;
}

.metric {
  display: grid;
  gap: 2px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(216, 224, 230, 0.92);
}

.metric strong {
  color: var(--rust);
  font-size: 1.9rem;
  line-height: 1;
}

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

.focus-list,
.skill-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.focus-list span,
.skill-cloud span,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 5px 9px;
  border-radius: 8px;
  font-size: 0.83rem;
  font-weight: 700;
  line-height: 1.2;
}

.focus-list span {
  background: rgba(24, 107, 114, 0.09);
  color: var(--teal-dark);
}

.section {
  padding: 72px 0;
  border-top: 1px solid rgba(216, 224, 230, 0.86);
  scroll-margin-top: 96px;
}

.intro {
  padding: 52px 0;
}

.intro p {
  max-width: 960px;
  margin-bottom: 0;
  color: #33404e;
  font-size: clamp(1.18rem, 2.2vw, 1.65rem);
  line-height: 1.45;
}

.section-heading {
  display: grid;
  gap: 6px;
  max-width: 760px;
  margin-bottom: 30px;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.04;
  letter-spacing: 0;
}

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

.direction-card,
.publication,
.timeline-item,
.link-card {
  border: 1px solid rgba(216, 224, 230, 0.94);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.direction-card:hover,
.publication:hover,
.timeline-item:hover,
.link-card:hover {
  border-color: rgba(24, 107, 114, 0.32);
  box-shadow: 0 14px 38px rgba(28, 36, 48, 0.08);
  transform: translateY(-2px);
}

.direction-card {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 22px;
}

.card-number {
  color: var(--gold);
  font-weight: 820;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.36rem;
  line-height: 1.15;
}

.direction-card p {
  color: #4a5664;
}

.direction-card ul,
.theme-list {
  display: grid;
  gap: 9px;
  margin: auto 0 0;
  padding-left: 19px;
  color: #33404e;
}

.publication-year {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  gap: 24px;
  padding: 26px 0;
  border-top: 1px solid rgba(216, 224, 230, 0.76);
}

.publication-year:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.publication-year > h3 {
  position: sticky;
  top: 86px;
  height: max-content;
  color: var(--rust);
  font-size: 1.8rem;
}

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

.publication {
  padding: 20px;
}

.publication-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}

.tag {
  background: rgba(184, 121, 24, 0.12);
  color: #7a4d09;
}

.tag.neutral {
  background: rgba(24, 107, 114, 0.1);
  color: var(--teal-dark);
}

h4 {
  margin-bottom: 8px;
  font-size: 1.1rem;
  line-height: 1.32;
}

.publication p {
  margin-bottom: 6px;
  color: #4a5664;
}

.publication .venue {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.equal-note {
  color: var(--muted);
}

.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.paper-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 5px 10px;
  border: 1px solid rgba(24, 107, 114, 0.18);
  border-radius: 8px;
  background: rgba(24, 107, 114, 0.07);
  color: var(--teal-dark);
  font-size: 0.86rem;
  font-weight: 780;
  text-decoration: none;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.timeline-item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
}

.timeline-item span {
  color: var(--gold);
  font-size: 0.82rem;
  font-weight: 820;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.timeline-item p {
  margin: 0;
  color: #3c4856;
}

.theme-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.85fr);
  gap: 34px;
  align-items: start;
}

.theme-layout h3 {
  margin-bottom: 16px;
}

.theme-list {
  margin-top: 0;
}

.skill-cloud span {
  border: 1px solid rgba(216, 224, 230, 0.96);
  background: rgba(255, 255, 255, 0.7);
  color: #33404e;
}

.link-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}

.link-card {
  display: grid;
  gap: 4px;
  padding: 18px 20px;
  text-decoration: none;
}

.link-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.link-card strong {
  color: var(--teal-dark);
  word-break: break-word;
}

:focus-visible {
  outline: 3px solid rgba(184, 121, 24, 0.38);
  outline-offset: 3px;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 46px;
  border-top: 1px solid rgba(216, 224, 230, 0.86);
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .section {
    scroll-margin-top: 150px;
  }

  .nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    width: 100%;
  }

  .nav a {
    text-align: center;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 38px;
  }

  .profile-panel {
    min-height: auto;
  }

  .direction-grid,
  .theme-layout,
  .timeline,
  .link-row {
    grid-template-columns: 1fr;
  }

  .direction-card {
    min-height: auto;
  }

  .publication-year {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .publication-year > h3 {
    position: static;
  }
}

@media (max-width: 560px) {
  main,
  .site-header,
  .site-footer {
    width: min(100% - 24px, var(--max));
  }

  .site-header {
    position: static;
    gap: 12px;
    padding: 14px 0 8px;
  }

  .hero {
    padding-bottom: 50px;
    gap: 24px;
  }

  h1 {
    font-size: 2.55rem;
  }

  .section {
    padding: 54px 0;
    scroll-margin-top: 24px;
  }

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

  .button {
    min-width: 0;
    padding-inline: 10px;
  }

  .hero-actions .button.primary {
    grid-column: 1 / -1;
  }

  .profile-panel {
    gap: 14px;
    padding: 18px;
  }

  .metric {
    padding-bottom: 14px;
  }

  .nav {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 5px;
  }

  .nav a {
    flex: 1 1 calc(33.333% - 8px);
    padding: 6px 8px;
    font-size: 0.84rem;
  }

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

}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}