:root {
  --bg: #ffffff;
  --paper: #ffffff;
  --text: #242424;
  --muted: #666666;
  --line: #e6e6e6;
  --accent: #6f4a8e;
  --accent-dark: #4e3465;
  --chip: #fafafa;
  --shadow: none;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

a { color: var(--accent-dark); text-decoration-thickness: 0.08em; text-underline-offset: 0.18em; }
a:hover { color: var(--accent); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: #ffffff;
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.nav {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0.9rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
  letter-spacing: 0.01em;
}

.nav-links { display: flex; flex-wrap: wrap; gap: 1rem; }
.nav-links a { color: var(--muted); font-size: 0.96rem; text-decoration: none; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--accent-dark); }

.page-shell {
  max-width: 1120px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  display: grid;
  grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.profile-card {
  position: sticky;
  top: 5.5rem;
  padding: 0;
  text-align: center;
}

.avatar {
  width: 170px;
  height: 170px;
  object-fit: cover;
  border-radius: 50%;
}

.profile-card h1 { margin: 1.2rem 0 0.2rem; font-size: 1.7rem; line-height: 1.2; }
.role { margin: 0; color: var(--accent-dark); font-weight: 650; }
.affiliation { margin: 0.8rem 0 1.4rem; color: var(--muted); font-size: 0.95rem; }

.contact-list {
  list-style: none;
  margin: 0;
  padding: 1.2rem 0 0;
  border-top: 1px solid var(--line);
  text-align: left;
}
.contact-list li { margin: 0.55rem 0; display: flex; gap: 0.55rem; align-items: baseline; }

.content-panel {
  padding: 0;
}

.section + .section { margin-top: 2.6rem; padding-top: 2.2rem; border-top: 1px solid var(--line); }
h2 { margin: 0 0 1rem; font-size: 1.65rem; line-height: 1.25; }
h3 { margin: 0 0 0.35rem; font-size: 1.12rem; }
p { margin: 0 0 1rem; }

.section-heading { display: flex; justify-content: space-between; gap: 1rem; align-items: baseline; }
.small-link { font-size: 0.92rem; white-space: nowrap; }
.news-list { margin: 0; padding-left: 1.2rem; }
.news-list li { margin: 0.75rem 0; }
time { color: var(--accent-dark); font-weight: 700; }

.tags { display: flex; flex-wrap: wrap; gap: 0.65rem; }
.tags span {
  background: var(--chip);
  color: var(--accent-dark);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.92rem;
  font-weight: 650;
}

.item { padding: 1rem 0; }
.item + .item { border-top: 1px solid var(--line); }
.meta { color: var(--muted); font-size: 0.96rem; margin-bottom: 0; }
.guide { padding: 0; }
.guide code { background: var(--chip); border-radius: 6px; padding: 0.12rem 0.32rem; }

.site-footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem 2.5rem;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 820px) {
  .nav { align-items: flex-start; flex-direction: column; }
  .page-shell { grid-template-columns: 1fr; padding-top: 1.5rem; }
  .profile-card { position: static; }
  .content-panel { padding: 0; }
}

.single-column { grid-template-columns: minmax(0, 860px); justify-content: center; }
.page-title { margin: 0 0 0.8rem; font-size: 2rem; line-height: 1.2; }
.lead { color: var(--muted); font-size: 1.06rem; }
.publication-entry p:last-child { margin-bottom: 0; }
.links { margin-top: 0.35rem; }
.links a { font-size: 0.94rem; }