:root {
  --bg: #f5f2ea;
  --bg-alt: #efe9dd;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-strong: rgba(255, 255, 255, 0.92);
  --line: rgba(13, 77, 76, 0.12);
  --line-strong: rgba(13, 77, 76, 0.22);
  --text: #1b2525;
  --muted: #5a6767;
  --accent: #0d4d4c;
  --accent-2: #b98952;
  --shadow: 0 20px 60px rgba(17, 44, 44, 0.08);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 15%, rgba(13, 77, 76, 0.08), transparent 30%),
    radial-gradient(circle at 85% 10%, rgba(185, 137, 82, 0.08), transparent 24%),
    linear-gradient(180deg, #f7f4ee 0%, #f3ede2 100%);
  line-height: 1.65;
}

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

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

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.section {
  padding: 5.5rem 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(255,255,255,0.18), rgba(255,255,255,0.34));
  border-top: 1px solid rgba(255,255,255,0.45);
  border-bottom: 1px solid rgba(13, 77, 76, 0.06);
}

.page-glow {
  position: fixed;
  width: 26rem;
  height: 26rem;
  border-radius: 999px;
  filter: blur(60px);
  pointer-events: none;
  z-index: -1;
  opacity: 0.45;
}

.page-glow-1 {
  top: -8rem;
  left: -6rem;
  background: rgba(13, 77, 76, 0.18);
}

.page-glow-2 {
  bottom: -10rem;
  right: -8rem;
  background: rgba(185, 137, 82, 0.18);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0 0;
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1rem;
  border: 1px solid rgba(255,255,255,0.5);
  background: rgba(255, 255, 255, 0.55);
  backdrop-filter: blur(18px);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.brand {
  width: 2.75rem;
  height: 2.75rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), #1a6d6b);
  color: white;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
  font-size: 0.96rem;
  color: var(--muted);
}

.site-nav a {
  padding: 0.35rem 0.15rem;
  position: relative;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: transform 0.22s ease;
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.hero {
  padding-top: 3.6rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.4rem;
  align-items: center;
}

.eyebrow,
.section-kicker,
.mini-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent);
}

.hero h1,
.section-heading h2,
.motivation-panel h3,
.contact-shell h2 {
  font-family: "Playfair Display", Georgia, serif;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 0;
}

.hero h1 {
  font-size: clamp(3rem, 6vw, 5.4rem);
  margin-top: 0.45rem;
}

.hero-tagline {
  margin: 1rem 0 0;
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  color: #243434;
  font-weight: 600;
}

.hero-text,
.section-heading p,
.content-stack p,
.motivation-panel p,
.publication-card p,
.contact-shell p {
  color: var(--muted);
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin: 1.7rem 0 1.3rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.15rem;
  border-radius: 999px;
  font-weight: 700;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 12px 28px rgba(13, 77, 76, 0.12);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #166463);
  color: white;
}

.btn-secondary {
  background: rgba(255,255,255,0.72);
  color: var(--accent);
  border: 1px solid var(--line-strong);
}

.btn-ghost {
  color: var(--text);
  background: transparent;
  border: 1px solid var(--line);
}

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.hero-metrics li {
  padding: 0.75rem 0.95rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(13, 77, 76, 0.1);
  color: #284040;
  font-size: 0.94rem;
}

.hero-visual {
  position: relative;
}

.portrait-frame {
  position: relative;
  aspect-ratio: 0.86;
  padding: 1rem;
  border-radius: 34px;
  background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(255,255,255,0.66));
  border: 1px solid rgba(255,255,255,0.75);
  box-shadow: var(--shadow);
}

.portrait-frame::before {
  content: "";
  position: absolute;
  inset: 1rem;
  border-radius: 26px;
  background: linear-gradient(160deg, rgba(13,77,76,0.16), rgba(185,137,82,0.12));
  pointer-events: none;
}

.portrait-frame img {
  position: relative;
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.75);
}

.floating-card,
.feature-card,
.publication-card,
.contact-card,
.motivation-panel {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.floating-card {
  position: absolute;
  right: -0.5rem;
  bottom: 1.25rem;
  width: min(18rem, 74%);
  padding: 1rem 1.1rem;
  border-radius: 22px;
}

.floating-card strong {
  display: block;
  margin-top: 0.35rem;
  font-size: 1rem;
  line-height: 1.45;
}

.two-col {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2.5rem;
  align-items: start;
}

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

.section-heading-wide {
  max-width: 52rem;
  margin-bottom: 2rem;
}

.section-heading h2,
.contact-shell h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  margin-top: 0.4rem;
}

.content-stack {
  display: grid;
  gap: 0.75rem;
}

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

.cards-grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card {
  border-radius: var(--radius-lg);
  padding: 1.35rem;
}

.card-index {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--accent-2);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
}

.feature-card h3,
.publication-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.18rem;
  line-height: 1.3;
}

.motivation-panel {
  margin-top: 1.35rem;
  border-radius: 30px;
  padding: 1.6rem 1.55rem;
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 1.35rem;
  align-items: start;
}

.motivation-panel h3 {
  font-size: clamp(1.6rem, 2vw, 2.2rem);
  margin-top: 0.3rem;
}

.publication-list {
  display: grid;
  gap: 1.2rem;
}

.publication-card {
  border-radius: 30px;
  padding: 1.6rem;
}

.pub-meta,
.pub-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  align-items: center;
}

.pub-meta {
  margin-bottom: 0.9rem;
}

.pub-meta span {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: rgba(13, 77, 76, 0.07);
  color: var(--accent);
  font-size: 0.84rem;
  font-weight: 700;
}

.pub-links {
  margin-top: 1rem;
}

.pub-links a {
  font-weight: 700;
  color: var(--accent);
  position: relative;
}

.pub-links a::after {
  content: "↗";
  margin-left: 0.3rem;
  font-size: 0.9em;
}

.section-contact {
  padding-bottom: 6rem;
}

.contact-shell {
  display: grid;
  grid-template-columns: 1fr 0.9fr;
  gap: 2rem;
  align-items: start;
}

.contact-card {
  padding: 1rem;
  border-radius: 30px;
  display: grid;
  gap: 0.85rem;
}

.contact-item {
  display: block;
  padding: 1rem 1rem 1.05rem;
  border-radius: 20px;
  background: rgba(255,255,255,0.78);
  border: 1px solid rgba(13, 77, 76, 0.1);
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.contact-item:hover,
.contact-item:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(13, 77, 76, 0.24);
}

.contact-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.site-footer {
  padding: 1.4rem 0 2rem;
}

.footer-shell {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.8rem;
  color: var(--muted);
  font-size: 0.95rem;
  border-top: 1px solid rgba(13, 77, 76, 0.1);
  padding-top: 1rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1060px) {
  .hero-grid,
  .two-col,
  .contact-shell,
  .motivation-panel,
  .cards-grid-4 {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 2.6rem;
  }

  .floating-card {
    position: static;
    margin-top: 1rem;
    width: 100%;
  }
}

@media (max-width: 760px) {
  .section {
    padding: 4.5rem 0;
  }

  .site-header {
    padding-top: 0.75rem;
  }

  .nav-shell {
    border-radius: 26px;
    align-items: flex-start;
    gap: 0.8rem;
    flex-direction: column;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 0.9rem 1rem;
  }

  .hero-actions,
  .hero-metrics,
  .pub-meta,
  .pub-links,
  .footer-shell {
    flex-direction: column;
    align-items: flex-start;
  }

  .portrait-frame {
    aspect-ratio: 0.9;
  }

  .publication-card,
  .feature-card,
  .contact-card,
  .motivation-panel {
    border-radius: 24px;
  }
}