main.container {
  flex-grow: 1;
  max-width: 960px;
  width: 100%;
  margin: 3rem auto;
  padding: 0 1rem;
  text-align: center;
}

h6 {
  font-weight: 700;
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.intro-text {
  font-size: 1.2rem;
  max-width: 720px;
  margin: 0 auto 3rem;
  line-height: 1.6;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
}

.adv-card {
  background: linear-gradient(145deg, #e6f0ff, #c4d8ff);
  border-radius: 20px;
  box-shadow: 8px 8px 20px #a1b9f9, -8px -8px 20px #ffffff;
  padding: 2rem 1.5rem;
  color: #00307b;
  text-align: center;
  cursor: default;
  user-select: none;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.adv-card:hover,
.adv-card:focus {
  transform: translateY(-10px);
  box-shadow: 12px 12px 30px #91a6f5, -12px -12px 30px #e7f0ff;
  outline: none;
}

.adv-icon {
  font-size: 4rem;
  color: #0047AB;
  margin-bottom: 1rem;
}

.adv-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.adv-desc {
  font-size: 1rem;
  line-height: 1.5;
  color: #00296b;
}

@media (max-width: 576px) {
  main.container {
    margin: 2rem 1rem;
  }

  h6 {
    font-size: 2rem;
  }
}