@charset "utf-8";

/* ----------------------------------
安全
---------------------------------- */
.structure_main {
  justify-content: space-between;
}

.structure_main .left {
  width: 50%;
}

.structure_main .right {
  width: 48%;
}

.struc_list li {
  /* background: #6d7f82; */
  padding: 10px 10px;
}

.struc_list li:nth-of-type(n+2) {
  margin-top: 5px;
}

.struc_ttl {
  font-size: 16px;
  color: #231815;
  padding-bottom: 10px;
  border-bottom: 1px solid #231815;
  margin-bottom: 10px;
}

.struc_ttl .en {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  min-height: 30px;
  font-size: 18px;
  color: #fff;
  background: #866b39;
  border: 1px solid #fff;
  border-radius: 50%;
  margin-right: 10px;
}

.struc_list .item_txt {
  color: #231815;
}

.concrete {
  justify-content: space-between;
  color: #fff;
  background: #6d7f82;
  padding: 20px 20px;
  margin-top: 20px;
}

.concrete .text {
  width: 62%;
}

.concrete .image {
  width: 34%;
}

.safety {
  margin-top: 40px;
}

.safety .big {
  font-size: 1.2em;
}

.st_item {
  justify-content: space-between;
}

.st_item .text {
  width: 40%;
}

.st_item .image {
  width: 56%;
}

.st06 {
  margin-top: 20px;
}

.safe_kodawari {
  border: 1px solid #ccc;
  padding: 20px 20px;
}

.safe_kodawari .ttl_flex {
  justify-content: space-between;
  margin-bottom: 10px;
}

.safe_kodawari .ttl_flex .itemsubttl {
  width: 60%;
  margin-bottom: 0;
}

.safe_kodawari .ttl_flex .grade_ttl {
  width: 36%;
  align-self: flex-start;
}

.st07 {
  margin-top: 20px;
}

/*---------------------------
tab
---------------------------*/
@media only screen and (max-width: 1180px) {}

/*---------------------------
sp
---------------------------*/
@media only screen and (max-width: 820px) {
  .structure_main .left {
    width: 100%;
  }

  .structure_main .right {
    width: 100%;
  }

  .concrete .text {
    width: 100%;
  }

  .concrete .image {
    width: 100%;
    margin-top: 10px;
  }

  .safety {
    margin-top: 20px;
  }

  .st_item .text {
    width: 100%;
  }

  .st_item .image {
    width: 100%;
    margin-top: 10px;
  }
}