.concept {
  background: url(../image/concept-backgroundimg.jpg);
  background-size: cover;
  object-fit: cover;
  padding: 87px 20px;
  text-align: center;
}

.logo-kuro {
  display: block;
  margin: 0 auto;
}

.footer-sub-text {
  display: block;
  margin: 45px auto;
}

.footer-sub-text.is-sp {
  display: none;
}

.footer-text {
  text-align: center;
}

.footer-text {
  line-height: 2.5em;
  font-weight: 300;
}

.footer-text.is-center {
  padding: 10px 0;
}

.concept-link {
  display: inline-block;
  padding: 1% 3%;
  margin-top: 20px;
  border: 1px solid #1f1915;
  background: rgba(255, 255, 255, 0.23);
}

@media (max-width: 768px) {
  .footer-sub-text.is-sp {
    display: block;
    width: 450px;
    height: auto;
  }

  .footer-sub-text.is-pc {
    display: none;
  }

  .footer-text {
    font-size: 14px;
  }

  .logo-kuro {
    width: 150px;
    height: auto;
  }

  .concept {
   background-position: 75%;
  }

}



@media (max-width: 640px) {
  .footer-sub-text.is-sp {
    width: 300px;
  }

  .concept-link {
    padding: 3% 7%;
  }
}