:root {
  --color-bg: #ffffff;
  --color-bg-muted: #f5f7f4;
  --color-text: #162019;
  --color-muted: #566159;
  --color-border: #d9e0da;
  --color-accent: #2f6f5e;
  --color-accent-strong: #204c41;
  --color-accent-soft: #e5f0eb;
  --color-warm: #8a5a22;
  --shadow-soft: 0 18px 48px rgba(22, 32, 25, 0.08);
  --radius: 8px;
  --max-width: 1120px;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
}

body,
button,
input,
textarea,
select {
  font: inherit;
  letter-spacing: 0;
}

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

a {
  color: inherit;
  text-decoration-color: color-mix(in srgb, var(--color-accent) 45%, transparent);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-accent-strong);
}

:focus-visible {
  outline: 3px solid var(--color-warm);
  outline-offset: 3px;
}

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

h1,
h2,
h3 {
  color: var(--color-text);
  font-weight: 720;
  line-height: 1.08;
}

h1 {
  font-size: 2.65rem;
  max-width: 11ch;
}

h2 {
  font-size: 1.8rem;
}

h3 {
  font-size: 1.12rem;
}

p {
  color: var(--color-muted);
}

.container {
  margin: 0 auto;
  max-width: var(--max-width);
  padding: 0 var(--space-5);
}

.narrow {
  max-width: 760px;
}

.skip-link {
  background: var(--color-text);
  color: var(--color-bg);
  left: var(--space-4);
  padding: var(--space-3) var(--space-4);
  position: fixed;
  top: var(--space-4);
  transform: translateY(-160%);
  z-index: 20;
}

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

.site-header {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  align-items: center;
  display: flex;
  gap: var(--space-5);
  justify-content: space-between;
  min-height: 72px;
}

.brand {
  align-items: center;
  display: inline-flex;
  gap: var(--space-3);
  min-height: 44px;
  text-decoration: none;
}

.brand-mark {
  flex: 0 0 auto;
}

.brand-name {
  color: var(--color-text);
  font-weight: 720;
}

.site-nav-list,
.footer-nav,
.tag-list,
.profile-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav-list {
  align-items: center;
  display: flex;
  gap: var(--space-2);
}

.site-nav-link {
  border-radius: var(--radius);
  color: var(--color-muted);
  display: inline-flex;
  font-size: 0.95rem;
  min-height: 44px;
  padding: 0.65rem 0.85rem;
  text-decoration: none;
}

.site-nav-link:hover,
.site-nav-link.is-active {
  background: var(--color-accent-soft);
  color: var(--color-accent-strong);
}

.nav-menu {
  position: relative;
}

.nav-summary {
  align-items: center;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  cursor: pointer;
  display: none;
  min-height: 44px;
  padding: 0.55rem 0.8rem;
}

.nav-summary::marker,
.nav-summary::-webkit-details-marker {
  display: none;
}

.hero {
  background:
    linear-gradient(120deg, rgba(229, 240, 235, 0.92), rgba(255, 255, 255, 0.84)),
    var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.hero-inner {
  align-items: center;
  display: grid;
  gap: var(--space-7);
  grid-template-columns: 1fr;
  min-height: 560px;
  padding-bottom: var(--space-8);
  padding-top: var(--space-8);
}

.hero-copy p,
.page-hero p,
.section-lede {
  font-size: 1.12rem;
  max-width: 62ch;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.button {
  align-items: center;
  border-radius: var(--radius);
  display: inline-flex;
  font-weight: 680;
  justify-content: center;
  min-height: 46px;
  padding: 0.75rem 1rem;
  text-decoration: none;
}

.button-primary {
  background: var(--color-accent);
  color: var(--color-bg);
}

.button-primary:hover {
  background: var(--color-accent-strong);
  color: var(--color-bg);
}

.button-secondary {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.hero-panel {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  min-height: 260px;
  overflow: hidden;
  padding: var(--space-5);
}

.hero-panel-line {
  background: linear-gradient(90deg, var(--color-accent), var(--color-warm));
  height: 4px;
  margin-bottom: var(--space-5);
  width: 42%;
}

.hero-panel-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(2, 1fr);
}

.hero-panel-grid span {
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-height: 76px;
}

.section,
.page-hero {
  padding: var(--space-8) 0;
}

.section-muted {
  background: var(--color-bg-muted);
}

.page-hero {
  background: var(--color-bg-muted);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  margin-bottom: var(--space-4);
}

.split-section {
  display: grid;
  gap: var(--space-5);
}

.section-header {
  align-items: end;
  display: flex;
  gap: var(--space-4);
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.text-link {
  color: var(--color-accent-strong);
  font-weight: 680;
}

.card-grid {
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1fr;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-width: 0;
  padding: var(--space-5);
}

.research-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card-kicker {
  color: var(--color-warm);
  font-size: 0.85rem;
  font-weight: 720;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.tag-list li {
  background: var(--color-accent-soft);
  border-radius: var(--radius);
  color: var(--color-accent-strong);
  font-size: 0.85rem;
  padding: 0.25rem 0.55rem;
}

.team-card {
  display: flex;
  gap: var(--space-4);
}

.team-photo {
  background: var(--color-bg-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  flex: 0 0 82px;
  height: 82px;
  width: 82px;
}

.team-card-body {
  min-width: 0;
}

.team-role,
.team-group {
  margin-bottom: var(--space-2);
}

.team-role {
  color: var(--color-text);
  font-weight: 680;
}

.contact-preview,
.contact-band {
  background: var(--color-text);
}

.contact-preview h2,
.contact-preview p,
.contact-band h2,
.contact-band p,
.contact-preview .email-link,
.contact-band .button {
  color: var(--color-bg);
}

.contact-preview-inner,
.contact-band-inner {
  align-items: center;
  display: grid;
  gap: var(--space-5);
}

.email-link {
  font-size: 1.05rem;
  font-weight: 680;
  overflow-wrap: anywhere;
}

.contact-layout {
  display: grid;
  gap: var(--space-6);
}

.contact-list {
  display: grid;
  gap: var(--space-4);
}

.contact-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-5);
}

.contact-card a {
  color: var(--color-accent-strong);
  font-weight: 680;
  overflow-wrap: anywhere;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
}

.footer-inner {
  align-items: center;
  display: grid;
  gap: var(--space-4);
}

.footer-text {
  margin: 0;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

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

.empty-state {
  border: 1px dashed var(--color-border);
  border-radius: var(--radius);
  margin: 0;
  padding: var(--space-5);
}

.visually-hidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
  width: 1px;
}

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

@media (min-width: 48em) {
  h1 {
    font-size: 3.35rem;
  }

  .hero-inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.75fr);
  }

  .split-section,
  .contact-layout {
    grid-template-columns: minmax(180px, 0.38fr) minmax(0, 1fr);
  }

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

  .contact-preview-inner,
  .contact-band-inner,
  .footer-inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 64em) {
  .research-grid,
  .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 47.99em) {
  .container {
    padding: 0 var(--space-4);
  }

  h1 {
    font-size: 2.3rem;
  }

  .header-inner {
    align-items: flex-start;
    flex-wrap: wrap;
    padding-bottom: var(--space-3);
    padding-top: var(--space-3);
  }

  .nav-summary {
    display: inline-flex;
    margin-left: auto;
  }

  .site-nav {
    flex-basis: 100%;
    width: 100%;
  }

  .site-nav-list {
    align-items: stretch;
    flex-direction: column;
    padding-bottom: var(--space-2);
  }

  .site-nav-link {
    width: 100%;
  }

  .nav-menu {
    flex-basis: 100%;
    width: 100%;
  }

  .section-header {
    align-items: start;
    flex-direction: column;
  }

  .team-card {
    flex-direction: column;
  }
}