:root {
  --page-bg: #eef2f7;
  --panel-bg: #ffffff;
  --ink: #20242f;
  --muted: #5c6678;
  --line: #cbd5e1;
  --soft-line: #d7e0ec;
  --chip-bg: #f7faff;
  --blue: #2457a6;
  --green: #26734d;
  --gold: #8b6418;
  --purple: #6550aa;
  --site-scale: 0.8;
  font-size: 80%;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--page-bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 1.125rem;
  line-height: 1.55;
}

body.math-page {
  font-family: Georgia, "Times New Roman", serif;
}

a {
  color: var(--blue);
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
}

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

.site-shell {
  max-width: 944px;
  margin: 34px auto;
  padding: 0 19px;
}

.site-card {
  background: var(--panel-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 8px 8px 0 rgba(148, 163, 184, 0.22);
  overflow: hidden;
}

.hero {
  padding: 32px 40px 22px;
  border-bottom: 1px solid var(--soft-line);
}

.hero-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 14px 18px;
}

.github-avatar {
  align-self: center;
  width: clamp(43px, 5.6vw, 61px);
  height: clamp(43px, 5.6vw, 61px);
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--chip-bg);
  object-fit: cover;
}

.hero-title {
  margin: 0;
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.35rem, 4.4vw, 3.55rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.subtitle {
  margin: 0;
  color: var(--muted);
  font-size: clamp(1.15rem, 2.2vw, 1.55rem);
  line-height: 1.2;
}

.content {
  padding: 30px 40px 40px;
}

.section {
  border-top: 2px solid var(--line);
  margin-top: 27px;
  padding-top: 24px;
}

.section:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.section h2 {
  margin: 0 0 13px;
  color: var(--ink);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  line-height: 1.1;
}

.section-intro {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1.05rem;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip-bg);
  padding: 3px 10px;
  color: #273348;
  font-size: 1rem;
  line-height: 1.2;
}

.badge strong {
  color: var(--ink);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
}

.card-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.info-card,
.link-card,
.news-card,
.entry-card {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
  padding: 14px 16px;
}

.info-card h3,
.news-card h3,
.entry-card h3 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1.16rem;
  line-height: 1.2;
}

.info-card p,
.news-card p,
.entry-card p,
.link-card p {
  margin: 0;
  color: var(--muted);
}

.profile-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 19px;
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
  padding: 13px 16px;
  text-decoration: none;
}

.profile-link strong {
  color: var(--purple);
  font-size: 1.16rem;
}

.profile-link span {
  color: var(--muted);
}

.pill {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  background: #edf2f8;
  padding: 2px 10px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.news-card {
  padding: 14px 18px;
}


.homepage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 192px;
  gap: 27px;
  align-items: start;
}

.main-column {
  min-width: 0;
}

.about-section {
  margin-top: 32px;
}

.research-section {
  margin-top: 30px;
}

.sidebar-links {
  border-left: 2px solid var(--line);
  padding-left: 21px;
  position: sticky;
  top: 22px;
}

.sidebar-links h2 {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1.45rem;
  line-height: 1.1;
}

.sidebar-links p {
  margin: 0 0 11px;
  color: var(--muted);
  font-size: 0.98rem;
}

.side-link-list {
  display: grid;
  gap: 10px;
}

.side-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
  padding: 11px 13px;
  text-decoration: none;
}

.side-link strong {
  font-size: 1.12rem;
}

.side-link.blue strong { color: var(--blue); }
.side-link.green strong { color: var(--green); }
.side-link.gold strong { color: var(--gold); }
.side-link.purple strong { color: var(--purple); }

.quick-links {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
  margin-top: 16px;
}

.link-card {
  display: flex;
  min-height: 120px;
  flex-direction: column;
  justify-content: space-between;
  color: inherit;
  text-decoration: none;
}

.link-card strong {
  display: block;
  margin-bottom: 5px;
  font-size: 1.65rem;
  line-height: 1.1;
}

.link-card.blue strong { color: var(--blue); }
.link-card.green strong { color: var(--green); }
.link-card.gold strong { color: var(--gold); }
.link-card.purple strong { color: var(--purple); }

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.top-nav a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip-bg);
  padding: 4px 10px;
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
}

details.entry-card,
details.paper-entry {
  display: block;
  margin: 11px 0;
}

details.paper-entry {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
  padding: 13px 14px;
}

summary {
  cursor: pointer;
  color: var(--ink);
  font-weight: 700;
}

details.paper-entry p {
  color: var(--muted);
}

.list-card p {
  margin: 0 0 11px;
}

@media (max-width: 760px) {
  .site-shell {
    margin: 16px auto;
    padding: 0 10px;
  }

  .site-card {
    box-shadow: 4px 4px 0 rgba(148, 163, 184, 0.2);
  }

  .hero,
  .content {
    padding-left: 18px;
    padding-right: 18px;
  }

  .card-grid,
  .card-grid.three,
  .quick-links,
  .profile-link,
  .homepage-layout {
    grid-template-columns: 1fr;
  }

  .sidebar-links {
    border-left: 0;
    border-top: 2px solid var(--line);
    padding-left: 0;
    padding-top: 21px;
    position: static;
  }
}

.article-body {
  color: #273348;
}

.article-body p {
  margin: 0 0 13px;
}

.article-body blockquote {
  margin: 10px 0 0;
  border-left: 3px solid var(--line);
  padding: 6px 0 6px 13px;
  color: var(--muted);
}

.resource-list {
  display: grid;
  gap: 10px;
}

.resource-row {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfdff;
  padding: 10px 13px;
}