#equation-library {
  margin: 15px 0;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
  background: #fafafa;
}

#equation-library summary {
  cursor: pointer;
  font-weight: bold;
  padding: 5px;
  user-select: none;
}

#equation-selector {
  font-family: monospace;
  font-size: 0.95em;
}

#equation-form-container input[type="range"] {
  accent-color: #0066cc;
}

#equation-results {
  border-left: 4px solid #0066cc;
}