:root {
  --bg: #f5f7f3;
  --panel: #ffffff;
  --panel-soft: #eef3ee;
  --text: #111827;
  --muted: #667085;
  --line: #e5e7eb;
  --line-strong: #d7dce2;
  --accent: #e57200;
  --navy: #1f3b63;
  --shadow: 0 18px 40px rgba(15, 23, 42, 0.05);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --content-width: 1040px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  background:
    radial-gradient(circle at top left, rgba(229, 114, 0, 0.05), transparent 24rem),
    linear-gradient(180deg, #fbfcfa 0%, var(--bg) 100%);
}

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

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

button {
  font: inherit;
}

.site-header,
main,
.site-footer {
  width: min(calc(100% - 2rem), var(--content-width));
  margin-left: auto;
  margin-right: auto;
}

.site-header {
  position: sticky;
  top: 1rem;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1rem;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.04);
}

body.is-scrolled .site-header {
  border-color: var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-width: 0;
}

.brand-copy {
  display: grid;
  gap: 0.1rem;
}

.brand-copy strong {
  font-size: 0.98rem;
  font-weight: 700;
}

.brand-copy small {
  color: var(--muted);
  font-size: 0.8rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.site-nav a {
  padding: 0.72rem 0.92rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background-color 160ms ease, color 160ms ease;
}

.site-nav a:hover,
.site-nav a.is-active {
  color: var(--text);
  background: rgba(17, 24, 39, 0.05);
}

.site-nav .nav-button {
  color: #fff;
  background: var(--navy);
}

.site-nav .nav-button:hover {
  background: #19314f;
  color: #fff;
}

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.28rem;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--panel);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  width: 1rem;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 160ms ease;
}

.nav-toggle[aria-expanded="true"] span:first-child {
  transform: translateY(3px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:last-child {
  transform: translateY(-3px) rotate(-45deg);
}

main {
  padding: 3.75rem 0 5rem;
}

.section {
  padding-top: 6rem;
  scroll-margin-top: 5.5rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 3.5rem;
  align-items: start;
  padding-top: 2rem;
}

.eyebrow,
.proof-list span,
.research-meta {
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero h1,
.section-head h2 {
  margin: 0;
  line-height: 1;
  letter-spacing: -0.04em;
}

.hero h1 {
  max-width: 9ch;
  font-size: clamp(3rem, 5vw, 4.25rem);
  font-weight: 700;
}

.lead,
.about-copy p,
.info-row p,
.research-item p,
.work-card p {
  color: var(--muted);
  line-height: 1.7;
}

.lead a,
.about-copy a,
.info-row a {
  color: var(--navy);
  text-decoration: underline;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.16em;
}

.founder-link {
  color: var(--accent) !important;
  font-weight: 800;
  text-decoration: none !important;
}

.lead {
  max-width: 40rem;
  margin: 1.35rem 0 0;
  font-size: 1.06rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.15rem;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  font-size: 0.94rem;
  font-weight: 600;
  transition: background-color 160ms ease, border-color 160ms ease, transform 160ms ease;
}

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

.button-primary {
  border-color: transparent;
  color: #fff;
  background: var(--navy);
}

.proof-list,
.profile-panel,
.info-panel,
.research-item,
.work-card,
.connect-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: var(--shadow);
}

.proof-list {
  margin-top: 2rem;
  overflow: hidden;
}

.proof-list div {
  display: grid;
  grid-template-columns: 9rem 1fr;
  gap: 1rem;
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--line);
}

.proof-list div:first-child {
  border-top: 0;
}

.proof-list strong {
  font-size: 0.97rem;
  line-height: 1.45;
  font-weight: 600;
}

.profile-panel {
  padding: 1rem;
}

.portrait-card {
  overflow: hidden;
  border-radius: var(--radius-sm);
}

.portrait-card img {
  width: 100%;
  aspect-ratio: 5 / 6;
  object-fit: cover;
  object-position: center top;
}

.faculty-card {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
}

.faculty-card img {
  width: 220px;
  max-width: 100%;
}

.section-head {
  max-width: 40rem;
}

.section-head h2 {
  font-size: clamp(1.95rem, 3.8vw, 3rem);
  font-weight: 700;
}

.about-grid,
.work-grid,
.connect-links {
  display: grid;
  gap: 1.25rem;
}

.about-grid {
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  margin-top: 1.75rem;
  align-items: start;
}

.about-copy p {
  margin: 0 0 1rem;
}

.info-panel {
  overflow: hidden;
}

.info-row {
  padding: 1rem 1.1rem;
  border-top: 1px solid var(--line);
}

.info-row:first-child {
  border-top: 0;
}

.info-row span {
  display: block;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.info-row p {
  margin: 0.55rem 0 0;
  font-size: 0.96rem;
}

.research-list {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.75rem;
}

.research-item {
  padding: 1.2rem 1.2rem 1.25rem;
  transition: border-color 160ms ease, transform 160ms ease;
}

.research-item:hover,
.work-card:hover,
.connect-links a:hover {
  border-color: var(--line-strong);
}

.research-item h3,
.work-card h3 {
  margin: 0.5rem 0 0;
  font-size: 1.12rem;
  line-height: 1.35;
}

.research-item p,
.work-card p {
  margin: 0.55rem 0 0;
  font-size: 0.95rem;
}

.section-links {
  margin-top: 1.1rem;
}

.section-links a {
  color: var(--navy);
  font-weight: 600;
}

.work-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 1.75rem;
}

.work-card {
  padding: 1.25rem;
}

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

.link-grid {
  display: grid;
  gap: 0.9rem;
  margin-top: 1.1rem;
}

.link-grid a,
.connect-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.82);
  font-weight: 600;
  transition: background-color 160ms ease, border-color 160ms ease;
}

.link-grid a::after,
.connect-links a::after {
  content: "Open";
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.link-grid a:hover,
.connect-links a:hover {
  background: #fff;
}

.connect-panel {
  padding: 1.4rem;
}

.section-head-compact {
  max-width: 32rem;
}

.connect-links {
  margin-top: 1.2rem;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0 2rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  font-weight: 600;
}

@media (max-width: 980px) {
  .hero,
  .about-grid,
  .work-grid,
  .link-grid,
  .connect-links {
    grid-template-columns: 1fr;
  }

  .profile-panel {
    max-width: 21rem;
  }
}

@media (max-width: 760px) {
  .site-header {
    padding: 0.8rem 0.9rem;
  }

  .brand-copy small {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.7rem);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.85rem;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.97);
    box-shadow: var(--shadow);
  }

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

  .site-nav a {
    text-align: center;
  }

  main {
    padding-top: 2.75rem;
  }

  .section {
    padding-top: 4.5rem;
  }

  .hero {
    gap: 2rem;
  }

  .hero h1 {
    max-width: 11ch;
    font-size: clamp(2.5rem, 10vw, 3.5rem);
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .proof-list div {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .profile-panel {
    max-width: none;
  }

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