:root {
  --bg: #ffffff;
  --text: #1d2430;
  --muted: #667085;
  --line: #e6e8ec;
  --accent: #2457a7;
  --soft: #f5f7fa;
  --max-width: 900px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Helvetica,
    Arial,
    sans-serif;
  font-size: 16px;
  line-height: 1.7;
}

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

a:hover {
  text-decoration: underline;
}

.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

.nav-wrap {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-name {
  color: var(--text);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-name:hover {
  text-decoration: none;
}

.nav {
  display: flex;
  gap: 24px;
  font-size: 14px;
}

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

.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 42px;
  align-items: start;
  padding-top: 78px;
  padding-bottom: 64px;
}

.profile-photo {
  width: 142px;
  height: 142px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(38px, 6vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.affiliation {
  margin: 14px 0 0;
  color: var(--muted);
}

.placeholder {
  color: #9aa1ad;
}

.intro {
  max-width: 650px;
  margin: 24px 0 0;
  font-size: 18px;
  color: #374151;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 26px;
  font-weight: 600;
}

.section {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 42px;
  padding: 48px 0;
  border-top: 1px solid var(--line);
}

.section h2 {
  margin: 0;
  font-size: 17px;
  line-height: 1.5;
  letter-spacing: -0.02em;
}

.section-content > :first-child {
  margin-top: 0;
}

.section-content > :last-child {
  margin-bottom: 0;
}

.interest-list {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.interest-list span {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--soft);
  color: #4b5563;
  font-size: 13px;
}

.empty-section {
  min-height: 34px;
}

.publication,
.project {
  margin-bottom: 30px;
}

.pub-title,
.project-title {
  margin: 0 0 4px;
  font-weight: 700;
}

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

.pub-links,
.project-links {
  display: flex;
  gap: 14px;
}

.contact p {
  margin-bottom: 5px;
}

.footer {
  padding: 36px 0 54px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .nav {
    display: none;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 52px;
  }

  .profile-photo {
    width: 112px;
    height: 112px;
  }

  .section {
    grid-template-columns: 1fr;
    gap: 18px;
    padding: 36px 0;
  }

  .intro {
    font-size: 17px;
  }
}