div.math {
  position: relative;
  text-align: center;
}

div.math span.eqno {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.doc-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.2rem;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}

.doc-card {
  display: block;
  padding: 1.25rem;
  border-radius: 3px;
  border: 1px solid #e1e4e5;
  background: #f4f8fa;
  text-decoration: none !important;
  color: inherit !important;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.doc-card:hover {
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  transform: translateY(-2px);
}

.doc-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
  color: #486c95;
}

.doc-card p {
  margin: 0;
  color: #555;
  font-size: 0.95rem;
}