:root {
  --bg: #0b0f14;
  --panel: #111826;
  --text: #e7edf6;
  --muted: #a7b3c6;
  --border: rgba(231, 237, 246, 0.12);
  --link: #7db7ff;
  --button: #e7edf6;
  --buttonText: #0b0f14;
  --max: 980px;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { height: 100%; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, 'Apple Color Emoji', 'Segoe UI Emoji';
  background: radial-gradient(1200px 600px at 20% 0%, rgba(125, 183, 255, 0.12), transparent 60%),
              radial-gradient(900px 500px at 90% 20%, rgba(255, 255, 255, 0.06), transparent 55%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--button);
  color: var(--buttonText);
  padding: 0.5rem 0.75rem;
  border-radius: 10px;
}
.skip-link:focus { left: 1rem; top: 1rem; z-index: 1000; }

.site-header {
  position: sticky;
  top: 0;
  backdrop-filter: blur(10px);
  background: rgba(11, 15, 20, 0.75);
  border-bottom: 1px solid var(--border);
  z-index: 50;
}

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

.brand-title { font-weight: 700; letter-spacing: 0.2px; }
.brand-subtitle { color: var(--muted); font-size: 0.95rem; }

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: flex-end;
}

.nav-link {
  display: inline-block;
  padding: 0.35rem 0.6rem;
  border-radius: 10px;
  border: 1px solid transparent;
  color: var(--text);
  font-size: 0.95rem;
}
.nav-link:hover { border-color: var(--border); text-decoration: none; }
.nav-link.active { border-color: var(--border); background: rgba(255, 255, 255, 0.04); }

.hero {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 1.5rem;
  margin: 2rem 0 1.25rem 0;
  align-items: start;
}

.hero h1 {
  margin: 0 0 0.8rem 0;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
}

.hero p { margin: 0 0 1rem 0; color: var(--text); }

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.hero-links { display: flex; gap: 0.75rem; flex-wrap: wrap; margin: 1rem 0; }

.button {
  display: inline-block;
  background: var(--button);
  color: var(--buttonText);
  padding: 0.55rem 0.85rem;
  border-radius: 12px;
  font-weight: 650;
  border: 1px solid rgba(255, 255, 255, 0.12);
  text-decoration: none;
}
.button:hover { text-decoration: none; filter: brightness(0.98); }

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

.meta { color: var(--muted); font-size: 0.95rem; }
.label { color: var(--text); font-weight: 600; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.25rem 0;
}

.card {
  background: rgba(17, 24, 38, 0.72);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
}

.card h2 { margin-top: 0; }

.card > h2 {
  margin-top: 2.0rem;
  margin-bottom: 0.9rem;
}
.card > h2:first-child {
  margin-top: 0;
}

.card > ul,
.card > p {
  margin-bottom: 1.2rem;
}

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

.list { margin: 0; padding-left: 1.2rem; }
.list li { margin: 0.5rem 0; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.pub-list { margin: 0; padding-left: 1.25rem; }
.pub { margin: 0.9rem 0 1.1rem 0; }
.pub-title { font-weight: 700; }
.pub-authors { color: var(--muted); }
.pub-links { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 0.25rem; }
.pub-meta { margin-top: 0.25rem; }

.talk-list { list-style: none; padding: 0; margin: 0; }
.talk {
  padding: 0.75rem 0;
  border-top: 1px solid var(--border);
}
.talk:first-child { border-top: none; }
.talk-title { font-weight: 700; }
.talk-links { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 0.25rem; }

.course { padding: 0.75rem 0; border-top: 1px solid var(--border); }
.course:first-child { border-top: none; }
.course-title { font-weight: 700; }

.site-footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding: 1rem 0;
  background: rgba(11, 15, 20, 0.6);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .grid { grid-template-columns: 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .site-header .container { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
}


.icon-link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
}

.icon-img {
  width: 1.3em;
  height: 1.3em;
  object-fit: contain;
  opacity: 0.85;
  vertical-align: baseline;
  transform: translateY(0.18em);
}

.icon-link i {
  font-size: 1em;
  line-height: 1;
}


.icon-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}



.project-hero img {
  display: block;
  width: 100%;
  max-width: 400px;
  height: auto;
  margin: 1rem auto;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}




.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0.7rem;
  top: 0.25rem;
  bottom: 0.25rem;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 10rem 1fr;
  gap: 1rem;
  padding: 0.4rem 0 0.9rem 0;
}

.timeline-item:last-child {
  padding-bottom: 0.2rem;
}

.timeline-dot {
  position: absolute;
  left: 0.7rem;
  top: 0.7rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 999px;
  background: var(--bg);
  border: 2px solid var(--text);
  transform: translateX(-50%);
}

.timeline-when {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  padding-left: 2rem; /* space for line+dot */
}

.timeline-what {
  padding-right: 0.25rem;
}

.timeline-title {
  font-weight: 600;
  margin: 0;
}

.timeline-desc {
  margin-top: 0.25rem;
  color: var(--muted);
}

.timeline-desc p {
  margin: 0.5rem 0;
}

@media (max-width: 760px) {
  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
  .timeline-when {
    white-space: normal;
  }
}