:root {
  --vibe-ink: #253746;
  --vibe-muted: #5d6b78;
  --vibe-accent: #157a8a;
  --vibe-accent-dark: #0f5e6b;
  --vibe-border: #dbe4ea;
  --vibe-surface: #ffffff;
  --vibe-soft: #f1f6f8;
}

body {
  color: var(--vibe-ink);
}

.navbar {
  box-shadow: 0 2px 12px rgba(22, 39, 54, 0.12);
}

#title-block-header {
  margin-bottom: 0.85rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--vibe-border);
}

#title-block-header .title {
  max-width: 850px;
  color: var(--vibe-ink);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
}

#title-block-header .quarto-title-meta-author {
  margin: 1.1rem 0 0;
  color: var(--vibe-ink);
}

#title-block-header .author,
#title-block-header .affiliation {
  color: var(--vibe-ink);
}

.vibe-home {
  max-width: 960px;
  padding-bottom: 2.5rem;
}

.vibe-lede {
  max-width: 760px;
  margin-bottom: 1.25rem;
  color: #455766;
}

.vibe-lede p {
  margin: 0;
}

.vibe-section-label {
  margin: 0 0 0.75rem;
  color: var(--vibe-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.vibe-link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
  margin-bottom: 2.25rem;
}

.vibe-link-card {
  position: relative;
  display: flex;
  min-height: 112px;
  flex-direction: column;
  justify-content: center;
  padding: 1rem 3rem 1rem 1.2rem;
  overflow: hidden;
  border: 1px solid var(--vibe-border);
  border-radius: 12px;
  background: var(--vibe-surface);
  box-shadow: 0 3px 12px rgba(27, 51, 70, 0.05);
  color: var(--vibe-muted);
  line-height: 1.45;
  text-decoration: none;
}

.vibe-link-card::after {
  content: "\2192";
  position: absolute;
  right: 1.2rem;
  color: var(--vibe-accent);
  font-size: 1.25rem;
}

.vibe-link-card:hover {
  border-color: #9cc6ce;
  box-shadow: 0 7px 20px rgba(27, 51, 70, 0.1);
  color: var(--vibe-muted);
  text-decoration: none;
}

.vibe-link-card:focus-visible {
  outline: 3px solid rgba(21, 122, 138, 0.28);
  outline-offset: 3px;
}

.vibe-link-card:first-child {
  grid-column: 1 / -1;
}

.vibe-link-title {
  margin-bottom: 0.25rem;
  color: var(--vibe-ink);
  font-weight: 700;
}

.vibe-action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.vibe-action-card {
  padding: 1.25rem 1.35rem;
  border: 1px solid #cfe0e5;
  border-top: 3px solid var(--vibe-accent);
  border-radius: 10px;
  background: var(--vibe-soft);
}

.vibe-action-card h4,
.vibe-citation h4 {
  margin: 0 0 0.6rem;
  color: var(--vibe-ink);
  font-weight: 700;
}

.vibe-action-card p,
.vibe-citation p {
  margin-bottom: 0;
}

.vibe-home a:not(.vibe-link-card) {
  color: var(--vibe-accent-dark);
  text-underline-offset: 0.15em;
}

.vibe-citation {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--vibe-border);
  border-left: 4px solid #8193a1;
  border-radius: 10px;
  background: var(--vibe-surface);
  box-shadow: 0 3px 12px rgba(27, 51, 70, 0.04);
}

.vibe-citation-entry {
  margin-top: 0.65rem;
  color: #44525e;
  line-height: 1.55;
}

@media (max-width: 700px) {
  .vibe-link-grid,
  .vibe-action-grid {
    grid-template-columns: 1fr;
  }

  .vibe-link-card {
    min-height: 96px;
  }

  .vibe-link-card:first-child {
    grid-column: auto;
  }
}