.sec-fv{
  --fv-bg: url('http://linkstream.site/wp-content/uploads/2025/10/fv.png');
  --fv-bg-sp: var(--fv-bg);
  --fv-height: 90vh;
  --fv-width: 100%;
  --fv-overlay: rgba(0,0,0,.35);
  --fv-pos: center center;
  --fv-text: #fff;
  --fv-max: 1100px;
  --header-h: 120px;

  position: relative;
  width: var(--fv-width);
  min-height: 100vh;
  background-image: var(--fv-bg);
  background-size: cover;
  background-repeat: no-repeat;
  background-position: var(--fv-pos);
  display: flex;
  align-items: center;
  margin-top: calc(-1 * var(--header-h));
  z-index: 0;
}

@media screen and (max-width: 800px) {
  .sec-fv{
    background-size: 150%;
    background-repeat: no-repeat;
  }
}

.sec-fv::before{
  content:"";
  position:absolute;
  inset:0;
  background: var(--fv-overlay);
}

.sec-fv > .wp-block-group__inner-container{
  position: relative;
  z-index: 1;
  width: min(92%, var(--fv-max));
  margin: 0 auto;
  color: var(--fv-text);
  text-align: left;
}

.fv-ttl{
  font-size: 2.5rem;
  font-weight: bold;
}

.fv-txt{
  font-size: 1.5rem;
}

@media (max-width: 800px){
  .sec-fv{
    background-image: var(--fv-bg-sp);
    background-position: 50% 30%;
  }
}