.case-study-nav {
  padding: 12px 24px;
  background: #f9f9f7;
  border-bottom: 1px solid #ddd;
  font: 14px system-ui, sans-serif;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.case-study-nav a { color: #2a78d6; }