:root{
  --bg:#f7f8fc;
  --bg2:#ffffff;
  --card:#ffffff;
  --text:#1f2937;
  --muted:#6b7280;
  --link:#2563eb;
  --accent:#7c5cff;
  --border: rgba(0,0,0,0.08);
  --shadow: 0 10px 30px rgba(0,0,0,.08);
  --radius: 18px;
  --max: 980px;
  --sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
body{
  font-family: var(--sans);
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(124,92,255,0.10), transparent 60%),
    radial-gradient(800px 500px at 90% 0%, rgba(37,99,235,0.10), transparent 55%),
    linear-gradient(180deg, var(--bg), var(--bg2));
}

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

.container{ max-width: var(--max); margin: 0 auto; padding: 22px 18px 64px; }

.topbar{
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(8px);
  background: rgba(255,255,255,0.85);
  border-bottom: 1px solid var(--border);
}

.brand{
  display:flex; align-items:center; gap: 12px;
  padding: 14px 18px;
  max-width: var(--max);
  margin: 0 auto;
}
.brand .dot{
  width: 10px; height: 10px; border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--link));
  box-shadow: 0 0 0 6px rgba(124,92,255,0.10);
}
.brand .title{ font-weight: 650; letter-spacing: .2px; }
.brand .subtitle{ color: var(--muted); font-size: .95rem; }

nav{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 18px 14px;
  display:flex; flex-wrap:wrap; gap: 8px;
}

nav a{
  display:inline-flex; align-items:center;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: .95rem;
}
nav a:hover{
  background: #f3f4f6;
  text-decoration:none;
}

.card{
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero{
  display:flex; flex-wrap:wrap; gap: 22px;
  align-items: stretch;
  margin-top: 22px;
}

.hero .photo{
  flex: 0 0 390px;
  display: flex;
  flex-direction: column;
}
.photo-frame{
  overflow: hidden;
  border-radius: var(--radius) var(--radius) 0 0;
}
.hero .photo img{
  width:100%;
  height:420px;
  object-fit:cover;
  object-position: center top;
  display:block;
}
.photo-credit{
  margin: 0;
  padding: 12px 14px 14px;
  font-size: 0.86rem;
  line-height: 1.45;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.hero .intro{
  flex:1; min-width: 280px;
  padding: 18px;
}

h1,h2,h3{ line-height:1.25; margin: 0.2rem 0 0.7rem; }
h1{ font-size: 2.1rem; letter-spacing: -0.02em; }
h2{ font-size: 1.35rem; margin-top: 1.35rem; }
p{ margin: 0.5rem 0; }
small, .muted{ color: var(--muted); }

.badges{ display:flex; flex-wrap:wrap; gap: 10px; margin-top: 12px; }
.badge{
  display:inline-flex; gap: 8px; align-items:center;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: .95rem;
}
.badge:hover{ background: #f3f4f6; text-decoration:none; }

.grid{
  display:grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  margin-top: 16px;
}
.col-6{ grid-column: span 6; }
.col-12{ grid-column: span 12; }
@media (max-width: 820px){
  .col-6{ grid-column: span 12; }
  .hero .photo{ flex: 1 1 280px; }
  .hero .photo img{ height: 360px; }
}

.box{ padding: 16px; }
.box ul{ padding-left: 18px; margin: 10px 0 0; }
.box li{ margin: 6px 0; }

.page{ padding: 22px; }
.page .card{ padding: 18px; }

hr{
  border:0;
  border-top: 1px solid var(--border);
  margin: 18px 0;
}

footer{
  margin-top: 48px;
  color: var(--muted);
  font-size: .95rem;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* Publications: collapsible years */
details.pub-year{
  margin: 12px 0;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fff;
}
details.pub-year summary{
  cursor: pointer;
  list-style: none;
  padding: 4px 2px;
  font-size: 1.05rem;
}
details.pub-year summary::-webkit-details-marker{ display:none; }
details.pub-year[open] summary{
  margin-bottom: 8px;
}
.pub-list{
  margin: 0;
  padding-left: 18px;
}
.pub-list li{
  margin: 8px 0;
}
.pub-section{
  margin-top: 1.5rem;
}
.pub-cards{
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}
.pub-card{
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  background: linear-gradient(180deg, #ffffff, #fbfcff);
}
.pub-card h3{
  margin: 0.2rem 0 0.45rem;
  font-size: 1.05rem;
}
.pub-meta{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.pub-year-chip{
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  background: rgba(37,99,235,0.10);
  color: var(--link);
  font-size: 0.85rem;
  font-weight: 650;
}
.pub-venue{
  color: var(--muted);
  font-size: 0.95rem;
}
.pub-citations{
  display: inline-flex;
  align-items: center;
  padding: 0.18rem 0.5rem;
  border-radius: 999px;
  background: rgba(124,92,255,0.10);
  color: #5b46d8;
  font-size: 0.82rem;
  font-weight: 600;
}
.pub-actions{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}
.pub-link,
.inline-action{
  display: inline-flex;
  align-items: center;
  padding: 0.42rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 0.92rem;
  text-decoration: none;
}
.pub-link:hover,
.inline-action:hover{
  text-decoration: none;
  background: #f3f4f6;
}
.pub-link-secondary{
  background: rgba(37,99,235,0.06);
}
code{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.95em;
  background: rgba(0,0,0,0.04);
  padding: 0.12em 0.35em;
  border-radius: 8px;
  border: 1px solid var(--border);
}