.tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.tier {
  background: var(--surface);
  border-radius: 6px;
  padding: 1rem;
  text-align: center;
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.tier-content {
  flex: 1 1 auto;
}

.tier-footer {
  margin-top: auto;
}

.tier:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgb(0 0 0 / 20%);
}

.tier img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}

.tier h2 {
  color: var(--accent);
  margin: 0.5rem 0;
  font-size: 1.2rem;
}

.tier ul {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
}

.tier li {
  font-size: 0.95rem;
  margin: 0.25rem 0;
}

.price {
  font-weight: bold;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

a.join-btn {
  background-color: var(--cta-bg);
  color: #fff !important;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  box-shadow: 0 4px 12px rgb(0 0 0 / 20%);
  transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

a.join-btn:hover,
a.join-btn:focus {
  background-color: var(--cta-bg-hover);
  box-shadow: 0 6px 18px rgb(0 0 0 / 30%);
  outline: none;
}

@media(width >=600px) {
  .tiers {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  }
}