:root {
  --bg: #0b1210;
  --bg-elevated: #121a17;
  --ink: #e8f0eb;
  --muted: #9aada3;
  --line: rgba(232, 240, 235, 0.12);
  --accent: #3ecf8e;
  --accent-soft: rgba(62, 207, 142, 0.14);
  --warm: #d4a574;
  --hero-depth: #07100d;
  --font-display: "Syne", system-ui, sans-serif;
  --font-body: "Figtree", system-ui, sans-serif;
  --space: clamp(1.25rem, 3vw, 2.5rem);
  --max: 72rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.175rem);
  line-height: 1.65;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(62, 207, 142, 0.08), transparent 55%),
    radial-gradient(900px 500px at -10% 40%, rgba(212, 165, 116, 0.06), transparent 50%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

strong {
  font-weight: 600;
  color: #f3faf6;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--accent);
  color: #04110a;
  font-weight: 600;
  border-radius: 0.35rem;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem var(--space);
  transition: background 0.35s var(--ease), border-color 0.35s var(--ease), backdrop-filter 0.35s var(--ease);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  background: rgba(11, 18, 16, 0.82);
  border-bottom-color: var(--line);
  backdrop-filter: blur(14px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

.wordmark:hover {
  color: var(--ink);
}

.wordmark-mark {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 0.5rem;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--line);
}

.nav {
  display: none;
  gap: 1.5rem;
}

.nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
}

.nav a:hover {
  color: var(--ink);
}

.nav-toggle {
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  background: transparent;
  display: grid;
  place-content: center;
  gap: 0.35rem;
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 1.1rem;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(2.5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-2.5px) rotate(-45deg);
}

.mobile-nav {
  position: fixed;
  inset: 4.25rem var(--space) auto;
  z-index: 49;
  display: grid;
  gap: 0.25rem;
  padding: 1rem;
  background: rgba(18, 26, 23, 0.96);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  backdrop-filter: blur(12px);
}

.mobile-nav[hidden] {
  display: none;
}

.mobile-nav a {
  padding: 0.85rem 0.75rem;
  text-decoration: none;
  font-weight: 500;
  border-radius: 0.4rem;
}

.mobile-nav a:hover {
  background: var(--accent-soft);
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: end;
  overflow: hidden;
  isolation: isolate;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(180deg, var(--hero-depth) 0%, #0d1713 55%, var(--bg) 100%);
}

.hero-visual canvas {
  width: 100%;
  height: 100%;
  opacity: 0.9;
}

.hero-glow {
  position: absolute;
  inset: auto -20% -30% 20%;
  height: 55%;
  background: radial-gradient(ellipse at center, rgba(62, 207, 142, 0.18), transparent 65%);
  pointer-events: none;
  animation: pulse-glow 8s ease-in-out infinite;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.05); }
}

.hero-content {
  width: min(100% - 2 * var(--space), 46rem);
  margin: 0 auto 0 var(--space);
  padding: 7rem 0 4.5rem;
  animation: rise 1s var(--ease) both;
}

.hero-brand {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 8vw, 5.25rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: #f4fbf7;
}

.hero h1 {
  margin: 0 0 1.15rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3.4vw, 2.35rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.hero-lead {
  margin: 0 0 2rem;
  max-width: 38ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.3rem;
  border-radius: 0.35rem;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
  color: inherit;
}

.btn-primary {
  background: var(--accent);
  color: #04110a;
}

.btn-primary:hover {
  background: #5bdb9f;
  color: #04110a;
}

.btn-ghost {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(232, 240, 235, 0.03);
}

.btn-ghost:hover {
  border-color: rgba(62, 207, 142, 0.45);
  background: var(--accent-soft);
}

.section {
  padding: clamp(4.5rem, 10vw, 7.5rem) 0;
  border-top: 1px solid var(--line);
}

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

.eyebrow {
  margin: 0 0 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--warm);
}

.section h2 {
  margin: 0 0 1.25rem;
  max-width: 18ch;
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.section-lead {
  margin: 0 0 2.5rem;
  max-width: 48ch;
  color: var(--muted);
}

.about-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
}

.about-grid p {
  margin: 0;
  max-width: 58ch;
  color: #c5d4cb;
}

.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.keyword-list li {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 0.25rem;
  font-size: 0.88rem;
  color: var(--muted);
  background: rgba(232, 240, 235, 0.02);
}

.focus-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
  counter-reset: focus;
}

.focus-list li {
  counter-increment: focus;
  display: grid;
  gap: 0.45rem;
  padding: 1.75rem 0;
  border-top: 1px solid var(--line);
  transition: background 0.35s var(--ease);
}

.focus-list li:last-child {
  border-bottom: 1px solid var(--line);
}

.focus-list h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.focus-list h3::before {
  content: counter(focus, decimal-leading-zero);
  display: inline-block;
  margin-right: 0.85rem;
  color: var(--accent);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  vertical-align: middle;
}

.focus-list p {
  margin: 0;
  max-width: 56ch;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 0;
}

.timeline-item {
  padding: 1.85rem 0;
  border-top: 1px solid var(--line);
}

.timeline-item:last-child {
  border-bottom: 1px solid var(--line);
}

.when {
  margin: 0 0 0.45rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--warm);
}

.timeline-item h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}

.role {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-weight: 500;
}

.timeline-item > p:last-child {
  margin: 0;
  max-width: 58ch;
  color: var(--muted);
}

.pub {
  padding-top: 0.5rem;
}

.pub-meta {
  margin: 0 0 0.65rem;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warm);
}

.pub h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

.pub h3 a {
  text-decoration: none;
}

.pub h3 a:hover {
  text-decoration: underline;
}

.pub-venue {
  margin: 0 0 1rem;
  color: var(--accent);
  font-weight: 500;
}

.pub p {
  margin: 0 0 1rem;
  max-width: 58ch;
  color: var(--muted);
}

.pub-authors {
  font-style: italic;
  color: #b7c8be !important;
}

.contact .section-lead {
  margin-bottom: 2rem;
}

.contact .btn-primary {
  word-break: break-all;
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  padding: 2rem var(--space) 2.75rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0;
}

.footer-note {
  color: #7f9388;
}

.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1.5rem);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 820px) {
  .nav {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }

  .hero {
    align-items: center;
  }

  .hero-content {
    margin: 0 0 0 clamp(2rem, 8vw, 7rem);
    padding: 6rem 0;
  }

  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .focus-list {
    grid-template-columns: 1fr 1fr;
    gap: 0 2.5rem;
  }

  .focus-list li {
    border-bottom: 1px solid var(--line);
  }

  .focus-list li:nth-child(1),
  .focus-list li:nth-child(2) {
    border-top: 1px solid var(--line);
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}