:root {
  --ink: #202428;
  --muted: #5c6670;
  --line: #dce2e8;
  --paper: #ffffff;
  --wash: #f6f7f3;
  --soft: #edf5f1;
  --teal: #176f73;
  --coral: #b75f43;
  --gold: #b9902f;
  --plum: #5f5377;
  --max: 1120px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

a {
  color: var(--teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
  padding: 8px 12px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  z-index: 10;
}

.skip-link:focus {
  left: 8px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(32, 36, 40, 0.12);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
}

.nav-shell {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  object-fit: contain;
  flex: 0 0 auto;
}

.brand-text {
  display: grid;
  gap: 0;
}

.brand strong {
  font-size: 1.05rem;
  letter-spacing: 0.02em;
}

.brand span {
  color: var(--muted);
  font-size: 0.78rem;
}

.nav-toggle {
  display: none;
  min-width: 58px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 650;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.95rem;
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.site-nav a[aria-current="page"],
.site-nav a:hover {
  border-color: var(--coral);
}

.hero {
  min-height: 620px;
  display: grid;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  background: var(--wash);
}

.hero-inner {
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: 78px 24px 48px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(340px, 1.08fr);
  gap: 42px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--coral);
  font-weight: 700;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

h1,
h2,
h3 {
  line-height: 1.08;
  margin: 0;
  color: var(--ink);
}

h1 {
  font-size: clamp(3rem, 7vw, 6.6rem);
  max-width: 720px;
}

.subtitle {
  margin: 24px 0 0;
  max-width: 650px;
  font-size: clamp(1.05rem, 1.7vw, 1.28rem);
  color: #39424a;
}

.hero-actions,
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.profile-links {
  align-items: center;
}

.icon-link {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
}

.icon-link:hover {
  border-color: var(--teal);
}

.icon-link img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.button,
.pill-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  font-weight: 650;
  font-size: 0.95rem;
}

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

.button:hover,
.pill-link:hover {
  border-color: var(--teal);
}

.hero-media {
  align-self: stretch;
  min-height: 430px;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid rgba(32, 36, 40, 0.16);
  background: #dfe8e4;
}

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

.content-section {
  border-bottom: 1px solid var(--line);
}

.content-section.tint {
  background: var(--soft);
}

.content-section.wash {
  background: var(--wash);
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 68px 24px;
}

.section-head {
  display: grid;
  grid-template-columns: minmax(220px, 0.42fr) 1fr;
  gap: 38px;
  align-items: start;
  margin-bottom: 34px;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 1.04rem;
}

.compact-head {
  display: block;
  margin-bottom: 12px;
}

.pub-section-head {
  margin-top: 46px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  padding: 22px;
}

.card h3 {
  font-size: 1.18rem;
  margin-bottom: 12px;
}

.card p,
.card li {
  color: var(--muted);
}

.card p:last-child {
  margin-bottom: 0;
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.news-list,
.pub-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.news-item,
.publication {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 22px;
  padding: 20px 0;
  border-top: 1px solid var(--line);
}

.publication {
  grid-template-columns: 84px 1fr;
}

.publication-link {
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--paper);
  transition: border-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.publication-link:hover,
.publication-link:focus-visible {
  border-color: rgba(23, 111, 115, 0.5);
  box-shadow: 0 10px 24px rgba(32, 36, 40, 0.08);
  transform: translateY(-1px);
}

.publication-link:focus-visible {
  outline: 3px solid rgba(23, 111, 115, 0.22);
  outline-offset: 3px;
}

.preprint {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: var(--wash);
}

.pub-title {
  margin: 0 0 6px;
  font-weight: 750;
}

.pub-authors,
.pub-venue {
  margin: 0;
  color: var(--muted);
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  background: var(--paper);
  font-size: 0.82rem;
  text-decoration: none;
}

.tag.topic-touch {
  border-color: rgba(23, 111, 115, 0.35);
}

.tag.topic-models {
  border-color: rgba(185, 144, 47, 0.42);
}

.tag.topic-design {
  border-color: rgba(183, 95, 67, 0.42);
}

.page-title {
  background: var(--wash);
  border-bottom: 1px solid var(--line);
}

.page-title .section-inner {
  padding-top: 70px;
  padding-bottom: 44px;
}

.page-title h1 {
  font-size: clamp(2.5rem, 6vw, 5rem);
}

.page-title p {
  max-width: 740px;
  color: var(--muted);
  font-size: 1.12rem;
}

.person-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.person-photo,
.image-slot {
  aspect-ratio: 4 / 3;
  border: 1px dashed #aeb8c0;
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(23, 111, 115, 0.11), rgba(183, 95, 67, 0.12)),
    var(--wash);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
  padding: 16px;
  overflow: hidden;
}

.person-photo {
  aspect-ratio: 1;
}

.person-photo img,
.image-slot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-slot:has(img),
.person-photo:has(img) {
  border-color: transparent;
  padding: 0;
  background: var(--wash);
}

.person-card {
  padding: 0;
  overflow: hidden;
}

.person-card .person-body {
  padding: 18px;
}

.person-card h3 {
  margin-bottom: 4px;
}

.person-profile-links {
  margin-top: 14px;
}

.filters {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-bottom: 28px;
}

.filters input {
  width: min(460px, 100%);
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
}

.callout {
  border-left: 4px solid var(--teal);
  background: var(--soft);
  padding: 18px 20px;
  margin: 28px 0;
}

.site-footer {
  background: #202428;
  color: #f4f6f4;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 36px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: start;
}

.site-footer a {
  color: #cde8e4;
}

.site-footer p {
  margin: 0;
  color: #c7ced3;
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-grid;
    place-items: center;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 69px;
    padding: 12px 24px 18px;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 18px 24px rgba(32, 36, 40, 0.08);
  }

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

  .hero-inner,
  .section-head,
  .grid-2,
  .grid-3,
  .person-grid,
  .footer-inner {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-inner {
    padding-top: 54px;
  }

  .hero-media {
    min-height: 280px;
  }

  .news-item,
  .publication {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 540px) {
  .nav-shell,
  .section-inner,
  .hero-inner {
    padding-left: 18px;
    padding-right: 18px;
  }

  .section-inner {
    padding-top: 48px;
    padding-bottom: 48px;
  }

  .hero-actions,
  .link-row,
  .filters {
    align-items: stretch;
    flex-direction: column;
  }

  .profile-links {
    align-items: center;
    flex-direction: row;
  }

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