:root {
  --bg: #f7f5ef;
  --text: #171717;
  --muted: #66635d;
  --line: #d8d3ca;
  --accent: #7b352e;
  --panel: #f1ede5;
  --max: 1040px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.58;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }

.wrap {
  width: min(calc(100% - 44px), var(--max));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 245, 239, 0.95);
  backdrop-filter: blur(9px);
  border-bottom: 1px solid var(--line);
}

.nav-wrap {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand,
nav a,
.section-label,
.research-block h3,
.coauthor,
.profile-links,
.contact-link,
.footer {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.brand {
  font-size: .9rem;
  font-weight: 700;
  letter-spacing: .025em;
}

nav { display: flex; gap: 24px; }
nav a {
  font-size: .86rem;
  color: var(--muted);
}

.profile {
  display: grid;
  grid-template-columns: 136px minmax(0, 1fr);
  gap: 28px;
  align-items: center;
  padding: 22px 0 20px;
}

.profile-photo {
  width: 136px;
  aspect-ratio: 280 / 394;
  object-fit: cover;
  display: block;
  border-radius: 2px;
  border: 1px solid rgba(0,0,0,.08);
}

.profile-copy { min-width: 0; }

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.45rem);
  line-height: 1.02;
  font-weight: 500;
  letter-spacing: -.025em;
}

.role {
  margin: 9px 0 0;
  font-size: .98rem;
  line-height: 1.38;
}

.intro {
  margin: 10px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.48;
}

.profile-links {
  margin: 10px 0 0;
  font-size: .82rem;
}
.profile-links a,
.contact-link {
  border-bottom: 1px solid var(--line);
}

.research {
  margin-top: 0;
  padding: 26px 34px 40px;
  background: var(--panel);
  border-top: 3px solid var(--accent);
  border-bottom: 1px solid var(--line);
}

.research-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.section-label {
  margin: 0 0 6px;
  font-size: .69rem;
  font-weight: 700;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent);
}

.research-header h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(1.95rem, 3.2vw, 2.55rem);
  font-weight: 500;
  letter-spacing: -.025em;
}

.research-block { padding-top: 22px; }
.research-block + .research-block {
  margin-top: 8px;
  border-top: 1px solid var(--line);
}
.research-block h3 {
  margin: 0 0 14px;
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}

.paper {
  padding: 0 0 21px;
  margin: 0 0 21px;
  border-bottom: 1px solid var(--line);
}
.paper:last-child { margin-bottom: 0; }
.featured-paper { padding-bottom: 17px; }

.paper-title {
  margin: 0;
  max-width: 820px;
  font-size: 1.23rem;
  line-height: 1.32;
  font-weight: 600;
}

.coauthor {
  margin: 5px 0 0;
  font-size: .8rem;
  color: var(--muted);
}

.paper-description {
  margin: 8px 0 0;
  max-width: 820px;
  color: var(--muted);
  font-size: .94rem;
}

.contact-section {
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 42px;
  padding: 42px 0;
  border-bottom: 1px solid var(--line);
}
.contact-section > div > p {
  margin: 12px 0 0;
  color: var(--muted);
}

.footer {
  padding: 26px 0 38px;
  color: var(--muted);
  font-size: .78rem;
}

@media (max-width: 780px) {
  .profile {
    grid-template-columns: 112px minmax(0, 1fr);
    gap: 22px;
    padding: 22px 0 20px;
  }
  .profile-photo { width: 112px; }
  .research { padding: 26px 26px 34px; }
  .contact-section {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 560px) {
  .wrap { width: min(calc(100% - 28px), var(--max)); }
  .nav-wrap { min-height: 52px; }
  nav { gap: 14px; }
  .profile {
    grid-template-columns: 88px minmax(0, 1fr);
    gap: 16px;
    align-items: start;
    padding: 20px 0 18px;
  }
  .profile-photo { width: 88px; }
  h1 { font-size: 1.85rem; }
  .role { font-size: .9rem; margin-top: 7px; }
  .intro { grid-column: 1 / -1; margin-top: 0; }
  .profile-links { grid-column: 1 / -1; margin-top: 0; }
  .research {
    width: 100%;
    padding: 24px 18px 30px;
  }
  .research-header {
    align-items: start;
    flex-direction: column;
    gap: 0;
  }
  .paper-title { font-size: 1.14rem; }
}