.block-intro-ral {
  padding:25px 0 50px;
  background-image: url(site_ral_fundos-01.png);
  background-position: center;
  background-size: cover;
}

.block-intro-ral  .gold-feature-position {
  /*   position: relative; */
    margin-left: 0;
}

.block-intro-ral h2{
  font-size: 1.2rem;
  margin-left: 75px;
}
.intro-content{
  font-size: 2rem;
  color:var(--ral-gold);
  margin: 20px 0;
  line-height: 1.1;
}

.block-intro-ral .flex-content {
    display: flex;
    flex-direction: row;
    gap: 15px;
    flex-wrap: wrap;
}
.block-intro-ral .flex-block{
  width: 47%;
  perspective: 1000px; 
}

.card-inner {
  position: relative;
  width: 100%;
  transform-style: preserve-3d;
  transition: transform 0.8s;
  aspect-ratio: 1;
}

.flex-block:hover .card-inner {
  transform: rotateY(180deg);
}

.front-block, .back-block {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
}

.front-block{
  background-size: cover;
  background-position: center;
}
.back-block{
  background-color: var(--ral-light-silver);
  border:1px solid white;
  display: flex;
  align-items: end;
  transform: rotateY(180deg);
  text-transform: uppercase;
  padding:10px 30px;
  color:var(--ral-dark);
  font-weight: 600;
  font-size: 1.1rem;
  line-height: 1;
}
.last-back-block{
  font-size: .6rem;
  padding: 12px;
  line-height: 1.1;
}

@media (min-width: 768px) {
  .block-intro-ral  .gold-feature-position {
    position: absolute;
  }
  .block-intro-ral h2{
    font-size: 1.5rem;
    margin-left: unset;
  }
  .intro-content{
    font-size: 3.8rem;
    margin: 40px 0;
    font-weight: 300;
  }
  
  .block-intro-ral .flex-block{
    width: 24%;
    perspective: 1000px; 
  }
  .block-intro-ral .gold-feature-position {
    margin-left: -75px;
    margin-top: 15px;
  }

  .back-block{
    font-size: 2rem;
  }
  .last-back-block {
    font-size: 1rem;
  }
}