.plumbing .cat-img {
  background-image: url("assets/sanitary-ware.png");
  background-size: cover;
  background-position: center;
}

.lighting .cat-img {
  background-image: url("assets/lighting-products.png");
  background-size: cover;
  background-position: center;
}

.electric .cat-img {
  background-image: url("assets/electrical-products.png");
  background-size: cover;
  background-position: center;
}

.tools .cat-img {
  background-image: url("assets/tools-products.png");
  background-size: cover;
  background-position: center;
}

.building .cat-img {
  background-image: url("assets/building-materials.png");
  background-size: cover;
  background-position: center;
}

.brand-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.brand-groups {
  max-width: 1220px;
  margin: auto;
  display: grid;
  gap: 42px;
}

.brand-group h3 {
  margin: 0 0 18px;
  padding-right: 15px;
  border-right: 3px solid #c99a45;
  color: #dfbd78;
  font-size: 21px;
}

.brand-card {
  min-height: 150px;
  padding: 20px;
  background: #fff;
  color: #142337;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border: 1px solid rgba(255,255,255,.14);
  transition: transform .25s ease, box-shadow .25s ease;
}

.brand-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 36px rgba(0,0,0,.22);
}

.brand-card img {
  width: 100%;
  max-width: 180px;
  height: 66px;
  object-fit: contain;
}

.brand-card img.logo-on-dark {
  width: 82px;
  padding: 8px;
  border-radius: 8px;
  background: #071b34;
}

.brand-card b {
  font-size: 15px;
  text-align: center;
}

@media (max-width: 760px) {
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .brand-groups { gap: 34px; }
  .brand-group h3 { font-size: 18px; }
  .brand-card { min-height: 130px; padding: 16px 10px; }
  .brand-card img { height: 54px; max-width: 145px; }
}