:root{
  --bg: #0a0a0b;
  --fg: #e9e9ea;
  --muted: #a6a6a8;
  --faint: rgba(233,233,234,0.08);
  --faint2: rgba(233,233,234,0.12);
  --link: #5aa7ff;

  --maxw: 760px;
  --radius: 14px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Source Sans 3", Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.7;
}

::selection{ background: rgba(90,167,255,0.25); }

a{ color: var(--link); text-decoration: none; }
a:hover{ text-decoration: underline; }
strong{ font-weight: 650; }

.skip-link{
  position: absolute;
  left: -999px;
  top: 12px;
  background: var(--fg);
  color: var(--bg);
  padding: 10px 12px;
  border-radius: 10px;
}
.skip-link:focus{ left: 12px; z-index: 999; }

.site-header{
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: linear-gradient(to bottom, rgba(10,10,11,0.92), rgba(10,10,11,0.7));
  border-bottom: 1px solid transparent;
}
.top-nav{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 22px;
}
.top-link{
  color: var(--fg);
  font-size: 13px;
  letter-spacing: 0.22em;
  text-transform: lowercase;
  opacity: 0.8;
}
.top-link:hover{ opacity: 1; text-decoration: none; }
.top-link.is-active{
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 6px;
}

.top-links{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px 16px;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--fg);
  opacity: 0.8;
}
.top-links a{ color: var(--fg); }
.top-links a:hover{ text-decoration: none; opacity: 1; }
.top-arrow{ font-size: 13px; }

.container{
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 24px 72px;
}

.section{
  margin-top: 56px;
}

.hero{
  margin-top: 6px;
}

.eyebrow{
  text-transform: uppercase;
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--muted);
}
.name{
  margin: 10px 0 6px;
  font-size: 30px;
  letter-spacing: -0.2px;
}
.subtitle{
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14.5px;
}
.meta{
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.dot{ opacity: 0.7; }

.links{
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 6px 0 18px;
  flex-wrap: wrap;
}
.link-item{
  color: var(--fg);
  font-size: 13.5px;
  border-bottom: 1px solid rgba(233,233,234,0.3);
}
.link-item:hover{ text-decoration: none; border-bottom-color: var(--link); color: var(--link); }

.affiliation{
  margin: 0 0 16px;
  color: var(--fg);
  opacity: 0.92;
  font-size: 15px;
}


.detail-grid{
  display: grid;
  gap: 14px;
  margin-bottom: 26px;
}
.detail{
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--faint2);
  background: rgba(255,255,255,0.02);
}
.label{
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 11px;
  color: var(--muted);
}
.value{
  margin-top: 6px;
  font-size: 14px;
  color: var(--fg);
}

h2{
  margin: 0 0 12px;
  font-size: 22px;
  letter-spacing: -0.2px;
}
h3{
  margin: 0 0 10px;
  font-size: 16.5px;
}
.prose p{ margin: 0 0 14px; }

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

.project{
  padding: 14px 0;
  border-bottom: 1px solid var(--faint);
}
.project:last-child{ border-bottom: 0; }
.project p{ margin: 6px 0 8px; }
.project a{ color: var(--link); }

.school-block{
  margin-top: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faint);
}
.school-block:last-child{ border-bottom: 0; }

.inline-links{
  margin-top: 8px;
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.list-title{
  margin: 18px 0 6px;
}

.grid-list{
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}
.grid-list li{
  padding: 6px 0;
}

.reading-group{
  margin-top: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faint);
}
.reading-group:last-child{ border-bottom: 0; }

.clean-list{
  list-style: none;
  padding: 0;
  margin: 0;
}
.clean-list li{ padding: 6px 0; }

/* Blog */
.post-list{
  margin-top: 18px;
  display: grid;
  gap: 12px;
}
.post{
  display: block;
  border: 1px solid var(--faint);
  border-radius: var(--radius);
  padding: 14px;
  background: rgba(255,255,255,0.02);
  color: var(--fg);
  text-decoration: none;
}
.post:hover{
  border-color: rgba(90,167,255,0.35);
  text-decoration: none;
}
.post-title{ font-size: 16px; font-weight: 650; margin-top: 6px; }
.post-snippet{ margin-top: 6px; font-size: 14px; color: var(--muted); }
.post-meta{ font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }

/* Footer */
.footer{
  margin-top: 64px;
  border-top: 1px solid var(--faint);
  padding-top: 18px;
}

/* Back to top */
.back-to-top{
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  border: 1px solid var(--faint2);
  background: rgba(255,255,255,0.03);
  color: var(--fg);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(6px);
  transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease;
}
.back-to-top:hover{ border-color: rgba(90,167,255,0.45); cursor: pointer; }
.back-to-top.show{
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

@media (max-width: 680px){
  .top-nav{ gap: 14px; }
  .name{ font-size: 26px; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .back-to-top{ transition: none; }
}