:root {
  --bg: #ffffff;
  --ink: #222222;
  --muted: #666666;
  --line: #dddddd;
  --accent: #2c5d8a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.62;
}

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

a:hover {
  text-decoration: underline;
}

.wrap,
.page {
  width: min(820px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}

.header-inner {
  display: flex;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  justify-content: flex-end;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.94rem;
}

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

.site-nav a.active {
  font-weight: 700;
}

.page {
  padding: 0 0 42px;
}

.hero {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.intro h1 {
  margin-top: -4px;
}

h1,
h2,
h3 {
  line-height: 1.25;
}

h1 {
  margin: 0 0 18px;
  font-size: 1.85rem;
  font-weight: 700;
}

h2 {
  margin: 34px 0 12px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

h3 {
  margin: 24px 0 8px;
  font-size: 1.05rem;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 0 0 18px 20px;
  padding: 0;
}

li {
  margin: 5px 0;
}

.lead {
  color: var(--ink);
  font-size: 1rem;
}

.profile-card {
  font-size: 0.95rem;
}

.profile-card img {
  display: block;
  width: 100%;
  margin: 0 0 20px;
  border: 1px solid var(--line);
}

.side-section {
  margin: 0 0 22px;
}

.side-section h2 {
  margin-top: 0;
  margin-bottom: 8px;
}

.side-section p {
  margin-bottom: 9px;
  color: var(--muted);
}

.section-grid {
  display: block;
}

.card,
.paper,
.course,
.dataset {
  margin: 0 0 22px;
  padding: 0;
  border: 0;
  background: transparent;
}

.card h3,
.paper h3,
.course h3,
.dataset h3 {
  margin-top: 0;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.paper-title {
  font-weight: 700;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

.tag-list li {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.tag-list li::before {
  content: "#";
}

.button {
  display: inline;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--accent);
  font-weight: 400;
}

.button.primary {
  background: transparent;
  color: var(--accent);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 18px 0 28px;
  color: var(--muted);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.86rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
    padding: 14px 0;
  }

  .site-nav {
    justify-content: flex-start;
    gap: 14px;
  }

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

  .profile-card {
    max-width: 260px;
  }
}