.bio-panel-expand-btn {
  padding: 8px;
  border-radius: 20%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: #888;
  cursor: pointer;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  transition: background .2s, color .2s;
  margin: 0;
}
.bio-panel-expand-btn:hover {
  background: var(--bg-alt);
  color: var(--accent);
}