:root {
  --bg: #fbf8f2;
  --text: #27221d;
  --muted: #6f655b;
  --border: #ded1c0;
  --soft: #f3eadf;
  --abstract-bg: #eef0e6;
  --abstract-border: #d3d6c6;
  --link: #2e6670;
  --link-hover: #214b52;
  --max-width: 960px;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  line-height: 1.62;
}

img {
  display: block;
  max-width: 100%;
}

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

a:hover,
a:focus-visible {
  color: var(--link-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--link);
  outline-offset: 3px;
}

.container {
  width: min(calc(100% - 32px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: rgba(251, 248, 242, 0.96);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}

.site-title {
  color: var(--text);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}

.site-title:hover,
.site-title:focus-visible {
  color: var(--text);
  text-decoration: none;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

.site-nav a[aria-current="page"],
.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
}

.main-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 56px;
  padding: 64px 0 36px;
}

.intro {
  max-width: 660px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--muted);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 10px;
  font-size: 38px;
  line-height: 1.15;
}

h2 {
  margin-bottom: 18px;
  font-size: 24px;
  line-height: 1.25;
}

h3 {
  margin-bottom: 7px;
  font-size: 19px;
  line-height: 1.35;
}

.position {
  margin-bottom: 28px;
  color: var(--muted);
  font-size: 18px;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 22px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 16px;
  border: 1px solid var(--link);
  border-radius: 3px;
  background: var(--link);
  color: #fff;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 1.2;
}

.button:hover,
.button:focus-visible {
  background: var(--link-hover);
  color: #fff;
  text-decoration: none;
}

.text-link {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
}

.profile-card {
  align-self: start;
}

.portrait {
  margin: 0 0 28px;
  border: 1px solid var(--border);
  background: var(--soft);
  box-shadow: 0 10px 28px rgba(82, 58, 34, 0.1);
}

.portrait img {
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.portrait figcaption {
  display: none;
  min-height: 220px;
  padding: 24px;
  color: var(--muted);
  place-items: center;
  text-align: center;
}

.portrait.is-missing figcaption {
  display: grid;
}

.portrait figcaption span {
  display: block;
  margin-top: 6px;
  color: var(--text);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
}

.contact-block {
  border-top: 1px solid var(--border);
  padding-top: 20px;
  font-size: 15px;
  line-height: 1.55;
}

.contact-block h2 {
  margin-bottom: 10px;
  font-size: 17px;
}

.contact-block p {
  margin-bottom: 14px;
}

.page-section {
  border-top: 1px solid var(--border);
  padding: 34px 0 42px;
}

.news-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.news-list li {
  display: grid;
  grid-template-columns: minmax(140px, max-content) minmax(0, 1fr);
  gap: 18px;
}

.news-list time,
.paper-meta,
.site-footer {
  color: var(--muted);
}

.news-list time {
  white-space: nowrap;
}

.content-page {
  max-width: 780px;
  padding: 58px 0 48px;
}

.page-heading {
  margin-bottom: 42px;
}

.page-heading p {
  color: var(--muted);
  font-size: 18px;
}

.research-section {
  border-top: 1px solid var(--border);
  padding-top: 30px;
  margin-top: 34px;
}

.paper {
  margin-bottom: 30px;
}

.paper:last-child {
  margin-bottom: 0;
}

.paper p {
  margin-bottom: 10px;
}

.abstract {
  margin: 8px 0 13px;
}

.abstract[open] {
  padding: 10px 14px 2px;
  border: 1px solid var(--abstract-border);
  border-radius: 4px;
  background: var(--abstract-bg);
}

.abstract summary {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--soft);
  color: var(--link);
  cursor: pointer;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
  line-height: 1.2;
  list-style: none;
}

.abstract summary::-webkit-details-marker {
  display: none;
}

.abstract summary::after {
  content: "+";
  margin-left: 9px;
  color: var(--muted);
}

.abstract[open] summary::after {
  content: "-";
}

.abstract summary:hover,
.abstract summary:focus-visible {
  border-color: var(--link);
  color: var(--link-hover);
}

.abstract p {
  margin: 12px 0 14px;
  color: var(--text);
}

.paper-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 14px;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 24px 0 34px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 13px;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 760px) {
  body {
    font-size: 16px;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 12px;
    padding: 18px 0;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px 18px;
  }

  .main-layout {
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 42px;
  }

  h1 {
    font-size: 32px;
  }

  .profile-card {
    max-width: 320px;
  }

  .news-list li {
    grid-template-columns: 1fr;
    gap: 2px;
  }
}