header {
  background: #277c71;
  position: relative;
  z-index: 1;
}

header::before {
  content: '';
  background: inherit;/*.bgImageで設定した背景画像を継承する*/
  -webkit-filter: blur(5px);
  -moz-filter: blur(5px);
  -o-filter: blur(5px);
  -ms-filter: blur(5px);
  filter: blur(5px);
  position: absolute;
  /*ブラー効果で画像の端がボヤけた分だけ位置を調整*/
  top: -5px;
  left: -5px;
  right: -5px;
  bottom: -5px;
  z-index: -1;/*重なり順序を一番下にしておく*/
}

header nav ul li a {
  color: #fff;
}

.art1 {
  background: #f2f2f2;
}

h2 p {
  color: #000;
}

.art3 {
  background: #277c71;
}

.art4 {
  background: #f2f2f2;
}

.art4 section dl dt {
  border-bottom: 1px solid #333;
}

.art5 input[type=submit] {
  background: #277c71;
}

footer {
  background: #277c71;
}

.hamburger__line {
  background-color: #fff;
}

.fv {
  height: 675px;
  background: url("../img/app_fv_pc.jpg") no-repeat;
  background-size: cover;
  background-position: top center;
  margin-top: 0;
}
.fv h1 {
  width: 100%;
  max-width: 1000px;
  min-width: 350px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.art06.price {
  background: #d8d8d8;
}

.price_con {
  padding-top: 50px;
}

.price_con_itemBox {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 35px;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto 80px;
}

.price_item {
  width: calc((100% - 35px) / 2);
}

.price_noteBox {
  text-align: center;
  font-size: 14px;
  font-weight: 700;
}

@media screen and (max-width: 768px) {
  .fv_sp {
    height: 600px;
    background: url("../img/app_fv_sp.jpg") no-repeat;
    background-size: cover;
    margin-top: 0;
  }
  
  .fv h1 {
    width: 100%;
    max-width: 1176px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
  }

  .price_con {
    padding-top: 20px;
    width: 90%;
    margin: 0 auto;
  }

  .price_con_itemBox {
    gap: 20px;
    margin: 0 auto 40px;
  }

  .price_item {
    width: 100%;
  }

  .price_noteBox {
    font-size: 10px;
  }
}