:root {
  --cmu-red: #c41230;
  --cmu-red-dark: #9a1027;
  --cmu-red-deep: #6f0b1b;
  --black: #101113;
  --iron-gray: #4f5053;
  --steel-gray: #e0e0e0;
  --soft-gray: #f6f6f6;
  --white: #ffffff;
  --link: #9a1027;
  --focus: #005fcc;
  --max-width: 1120px;
  --measure: 68ch;
  --radius: 1rem;
  --shadow: 0 1rem 2.25rem rgb(0 0 0 / 0.08);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--black);
  background: var(--white);
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--link);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.18em;
}

a:hover {
  text-decoration-thickness: 0.16em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 4px;
}

.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 100;
  transform: translateY(-150%);
  padding: 0.65rem 0.9rem;
  border-radius: 0.5rem;
  color: var(--white);
  background: var(--black);
}

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

.site-header {
  border-top: 0.45rem solid var(--cmu-red);
  border-bottom: 1px solid var(--steel-gray);
  background: rgb(255 255 255 / 0.98);
}

.header-inner,
.footer-inner,
.section {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  color: var(--black);
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 3rem;
  height: 3rem;
  place-items: center;
  border-radius: 50%;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--white);
  background: var(--cmu-red);
}

.brand-text {
  display: grid;
  gap: 0.05rem;
}

.brand-text strong {
  font-size: 1.1rem;
  line-height: 1.2;
}

.brand-text span {
  color: var(--iron-gray);
  font-size: 0.92rem;
  line-height: 1.2;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.25rem;
}

.site-nav a {
  border-radius: 999px;
  padding: 0.55rem 0.85rem;
  color: var(--black);
  font-weight: 700;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--white);
  background: var(--cmu-red);
}

.section {
  padding-block: clamp(2.5rem, 6vw, 5rem);
}

.narrow {
  max-width: 900px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(17rem, 22rem);
  gap: clamp(2rem, 6vw, 4rem);
  align-items: center;
}

.hero-copy,
.page-hero {
  position: relative;
}

.hero-copy::before,
.page-hero::before {
  content: "";
  display: block;
  width: 4.75rem;
  height: 0.45rem;
  margin-bottom: 1.1rem;
  border-radius: 999px;
  background: var(--cmu-red);
}

.eyebrow,
.card-kicker {
  margin: 0 0 0.5rem;
  color: var(--cmu-red-deep);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--black);
  line-height: 1.12;
}

h1 {
  max-width: 12ch;
  font-size: clamp(3rem, 8vw, 5.6rem);
  letter-spacing: -0.055em;
}

.page-hero h1 {
  max-width: 14ch;
  font-size: clamp(2.6rem, 7vw, 4.7rem);
}

h2 {
  font-size: clamp(1.65rem, 4vw, 2.25rem);
  letter-spacing: -0.03em;
}

h3 {
  font-size: 1.18rem;
}

p {
  margin: 1rem 0 0;
}

.lede {
  max-width: var(--measure);
  margin-top: 1rem;
  color: #2b2d31;
  font-size: clamp(1.18rem, 2.4vw, 1.45rem);
  line-height: 1.55;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  border: 2px solid var(--cmu-red);
  border-radius: 999px;
  padding: 0.55rem 1rem;
  color: var(--cmu-red-deep);
  font-weight: 800;
  text-decoration: none;
  background: var(--white);
}

.button:hover {
  color: var(--white);
  background: var(--cmu-red);
}

.button.primary {
  color: var(--white);
  background: var(--cmu-red);
}

.button.primary:hover {
  background: var(--cmu-red-dark);
}

.profile-card,
.callout,
.feature-card,
.research-card,
.filter-panel,
.publication-item article {
  border: 1px solid var(--steel-gray);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.profile-card {
  overflow: hidden;
}

.profile-card img {
  display: block;
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
}

.contact-block {
  padding: 1.35rem;
}

.contact-block h2,
.callout h2 {
  font-size: 1.25rem;
}

address {
  margin-top: 0.75rem;
  font-style: normal;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(17rem, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.callout {
  padding: 1.35rem;
  border-top: 0.35rem solid var(--cmu-red);
}

.callout.subtle {
  border-top-color: var(--steel-gray);
  background: var(--soft-gray);
}

.tag-list,
.clean-list {
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tag-list li {
  border: 1px solid var(--steel-gray);
  border-radius: 999px;
  padding: 0.35rem 0.65rem;
  background: var(--soft-gray);
  font-weight: 700;
  font-size: 0.95rem;
}

.clean-list li {
  padding-block: 0.55rem;
  border-bottom: 1px solid var(--steel-gray);
}

.clean-list li:last-child {
  border-bottom: 0;
}

.section-heading {
  max-width: var(--measure);
  margin-bottom: 1.5rem;
}

.card-grid {
  display: grid;
  gap: 1rem;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.feature-card,
.research-card {
  display: block;
  min-height: 100%;
  padding: 1.35rem;
}

.feature-card {
  color: var(--black);
  text-decoration: none;
}

.feature-card:hover {
  border-color: var(--cmu-red);
  transform: translateY(-2px);
}

.feature-card p,
.research-card p,
.resource-list span,
.muted,
.pub-authors,
.pub-venue {
  color: #45484d;
}

.text-link {
  display: inline-block;
  margin-top: 1rem;
  font-weight: 800;
}

.resource-list {
  display: grid;
  gap: 0.8rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.resource-list li {
  display: grid;
  gap: 0.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--steel-gray);
}

.resource-list a {
  font-weight: 800;
}

.filter-panel {
  display: grid;
  gap: 1rem;
  padding: 1.25rem;
  background: var(--soft-gray);
  box-shadow: none;
}

.filter-panel h2 {
  font-size: 1.35rem;
}

.search-label {
  font-weight: 800;
}

.search-input {
  width: 100%;
  min-height: 3rem;
  border: 2px solid #767676;
  border-radius: 0.65rem;
  padding: 0.65rem 0.85rem;
  font: inherit;
  background: var(--white);
}

.publication-section {
  padding-top: 1rem;
}

.publication-list {
  display: grid;
  gap: 1rem;
  padding-left: 1.35rem;
  margin: 0;
}

.publication-item {
  padding-left: 0.35rem;
}

.publication-item::marker {
  color: var(--cmu-red);
  font-weight: 900;
}

.publication-item article {
  padding: 1.1rem 1.25rem;
  box-shadow: none;
}

.publication-item h3 {
  max-width: 72ch;
  font-size: 1.08rem;
  line-height: 1.35;
}

.pub-authors,
.pub-venue,
.pub-links {
  margin-top: 0.45rem;
  font-size: 0.98rem;
}

.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.55rem;
}

.pub-links a {
  font-weight: 800;
}

.site-footer {
  margin-top: 2rem;
  color: var(--white);
  background: var(--black);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1.5rem;
  padding-block: 2rem;
}

.site-footer a {
  color: var(--white);
}

@media (max-width: 820px) {
  .header-inner,
  .hero,
  .two-column,
  .card-grid.two,
  .card-grid.three {
    grid-template-columns: 1fr;
  }

  .header-inner {
    display: grid;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .profile-card {
    max-width: 25rem;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 1rem;
  }

  .header-inner,
  .footer-inner,
  .section {
    width: min(100% - 1rem, var(--max-width));
  }

  .brand-mark {
    width: 2.6rem;
    height: 2.6rem;
  }

  .site-nav a {
    padding: 0.5rem 0.65rem;
  }

  .button {
    width: 100%;
  }

  .publication-list {
    padding-left: 1.1rem;
  }

  .publication-item article {
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@media (forced-colors: active) {
  .brand-mark,
  .site-nav a[aria-current="page"],
  .button,
  .button.primary {
    border: 1px solid CanvasText;
  }
}

@media print {
  .site-header,
  .site-footer,
  .filter-panel,
  .actions,
  .skip-link {
    display: none;
  }

  body {
    color: #000;
    background: #fff;
    font-size: 11pt;
  }

  .section {
    width: 100%;
    padding-block: 0.5rem;
  }

  .publication-item article,
  .profile-card,
  .callout,
  .feature-card,
  .research-card {
    border: 0;
    box-shadow: none;
  }
}