.ads-section {
  background: var(--green-600);
  color: #fff;
  border-radius: 5px;
  padding: 1rem;
  position: sticky;
  top: 84px;
  height: fit-content;
  box-shadow: var(--shadow);
  text-align: center;
  margin-top: 1rem;
}
.ads-section h2 {
  margin: .25rem 0 .5rem;
  color: #fff;
}
.ads-content p {
  font-size: 1.05rem;
  margin-bottom: .75rem;
  line-height: 1.4;
}
.ads-icons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin: 10px 0;
}
.ads-icons i {
  font-size: 40px;
  color: #ffffff; /* trắng để nổi trên nền xanh */
  transition: transform .2s, color .2s;
  cursor: pointer;
}
.ads-icons i:hover {
  transform: scale(1.2);
  color: #413909; /* vàng khi hover */
}
.ads-section .btn {
  display: inline-block;
  margin-top: .5rem;
  padding: .5rem .8rem;
  border-radius: 10px;
  background: #fff;
  color: var(--green-700);
  font-weight: 600;
  text-decoration: none;
}
.ads-section .btn:hover {
  background: #ffd700;
  color: #000;
}