:root {
  --bg: #ffffff;
  --text: #172033;
  --muted: #5f6b7a;
  --line: #e6e8ec;
  --link: #1f2937;
  --max-width: 860px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.72;
  font-size: 16px;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

a:hover {
  color: #000;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: #ffffff;
}

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

.brand {
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 0.92rem;
}

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
  font-weight: 600;
}

.page {
  padding: 54px 0 80px;
}

.home-page {
  padding-top: 48px;
}

.intro {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 52px;
  align-items: start;
}

.intro-sidebar {
  text-align: left;
}

.profile-photo {
  width: 170px;
  height: 170px;
  display: block;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  margin-bottom: 20px;
  border: 1px solid var(--line);
  background: #f5f5f5;
}

.intro-sidebar h1 {
  margin: 0;
  font-size: 1.65rem;
  line-height: 1.2;
  letter-spacing: -0.04em;
}

.profile-subtitle {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
  line-height: 1.55;
}

.profile-links {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: 18px;
  font-size: 0.94rem;
}

.profile-links a {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--link);
}

.profile-link-icon {
  width: 1.15em;
  display: inline-flex;
  justify-content: center;
  align-items: center;
  font-size: 0.95em;
  line-height: 1;
}

.intro-text {
  max-width: 620px;
  padding-top: 2px;
}

.intro-text p {
  margin: 0 0 18px;
  font-size: 1rem;
}

.page-title {
  margin: 0 0 28px;
  font-size: 1.85rem;
  line-height: 1.25;
  letter-spacing: -0.04em;
}

.section-title {
  margin: 38px 0 14px;
  font-size: 1.35rem;
  line-height: 1.3;
  letter-spacing: -0.03em;
}

.publication-list {
  display: grid;
  gap: 22px;
}

.publication {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.pub-year {
  color: var(--muted);
  font-weight: 600;
  font-size: 0.95rem;
}

.publication h3 {
  margin: 0;
  font-size: 1.03rem;
  line-height: 1.45;
}

.pub-meta,
.pub-venue {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.pub-links {
  margin-top: 8px;
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 0.94rem;
}

.news-list {
  display: grid;
  gap: 0;
}

.news-item {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.news-item:first-child {
  border-top: 1px solid var(--line);
}

.news-item p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.7;
}

.contact-box {
  max-width: 680px;
}

.contact-box p {
  margin-top: 0;
}

.contact-list {
  padding-left: 20px;
}

.contact-list li {
  margin-bottom: 8px;
}

@media (max-width: 760px) {
  .container {
    width: min(100% - 30px, var(--max-width));
  }

  .nav {
    height: auto;
    padding: 18px 0;
    align-items: flex-start;
    flex-direction: column;
    gap: 10px;
  }

  .nav-links {
    gap: 18px;
    flex-wrap: wrap;
  }

  .page {
    padding-top: 34px;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  .profile-photo {
    width: 145px;
    height: 145px;
  }

  .profile-links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 12px;
  }

  .publication {
    grid-template-columns: 1fr;
    gap: 6px;
  }
}