section.about {
  padding-top: 100px;
  background-image: url('./image/bg/image-1.jpg');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  position: relative;
  color: white;
}

section.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  /* background: rgba(0, 0, 0, 0.6); */
  z-index: 1;
}

section.about .container-fluid {
  position: relative;
  z-index: 2;
}

.about-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 1rem;
  padding: 2rem;
  color: #212529;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  height: 100%; /* makes all cards equal height in their parent */
}

.about-icon {
  font-size: 2rem;
  color: #0d6efd;
}

.about h3 span {
  color: #dc3545;
}

/* === Timeline Section === */
.vertical-timeline {
  position: relative;
  margin-left: 20px;
  padding-left: 20px;
  border-left: 4px solid #0d6efd;
}
.timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

.timeline-dot {
  position: absolute;
  left: -32px;
  top: 30px;
  width: 20px;
  height: 20px;
  background-color: #0d6efd;
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px #0d6efd20;
}

.timeline-content {
  background: #fff;
  padding: 1.25rem;
  border-radius: 0.75rem;
  margin-left: 1rem;
  transition: transform 0.4s ease;
}
@media (min-width: 992px) {
  .row.g-4.justify-content-center {
    align-items: stretch; /* ensures equal height columns */
  }

  .row.g-4.justify-content-center {
    align-items: stretch;
  }

.about-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}
}
@media (max-width: 576px) {
  .timeline-content {
    font-size: 0.95rem;
  }
}