.shop-grid {
  display: flex;
  flex-wrap: wrap;         /* Zeilenumbruch bei kleineren Viewports */
  gap: 12px;
  justify-content: space-between;
}
.shop-column {
  flex: 1; /* statt fixer Breite */
  min-width: 180px; /* für mobile oder Scrollbarkeit */
  background-color: #fff;
  border-radius: 4px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
  padding: 10px;
  box-sizing: border-box;
}
.shop-column h4 {
  font-size: 1rem;
  margin: 1.2em 0 0.4em;
  color: #444;
  border-bottom: 1px dotted #5c5c5c;
  padding-bottom: 2px;
}
.shop-grid::-webkit-scrollbar-track {
  background: #eee;
}
.shop-grid::-webkit-scrollbar-thumb {
  background-color: #aaa;
  border-radius: 5px;
}