:root {
  --text: #2c2c2c;
  --text-secondary: #5d5d5d;
  --text-light: #767676;
  --accent: #184d74;
  --accent-hover: #0f334d;
  --background: #fcfcfa;
  --surface: #f0efe9;
  --border: #d8d4ca;
  --sidebar-width: 220px;
  --page-width: 980px;
  --page-gap: 64px;
  --section-gap: 40px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Source Sans 3", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: linear-gradient(180deg, #faf9f5 0%, var(--background) 220px);
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--accent-hover);
}

.page {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 56px 28px 80px;
  display: flex;
  gap: var(--page-gap);
}

.sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  position: sticky;
  top: 40px;
  align-self: flex-start;
}

.photo {
  width: 100%;
  aspect-ratio: 3 / 4;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: linear-gradient(135deg, #ece8dd 0%, #f8f6ef 100%);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  margin-bottom: 24px;
  text-align: center;
  font-size: 14px;
}

.photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.sidebar h1 {
  margin: 0 0 14px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.2;
}

.affiliation,
.contact {
  margin: 0 0 10px;
  color: var(--text-secondary);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 18px 0 28px;
  font-weight: 600;
}

.section-nav {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.content {
  min-width: 0;
  flex: 1;
}

.section {
  padding-bottom: var(--section-gap);
  margin-bottom: var(--section-gap);
  border-bottom: 1px solid var(--border);
}

.section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.section h2 {
  margin: 0 0 18px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 28px;
  font-weight: 600;
  line-height: 1.2;
}

.section p {
  margin: 0 0 16px;
}

.entry-list {
  display: grid;
  gap: 28px;
}

.entry h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text);
}

.entry ul,
.publication-list {
  margin: 0;
  padding-left: 20px;
}

.entry li,
.publication-list li {
  margin-bottom: 12px;
}

@media (max-width: 860px) {
  .page {
    flex-direction: column;
    gap: 36px;
    padding: 32px 20px 56px;
  }

  .sidebar {
    width: 100%;
    position: static;
  }

  .photo {
    max-width: 240px;
  }

  .section-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 14px;
  }

  .section h2 {
    font-size: 24px;
  }
}