.about_top {
  position: relative;
  background: url(../images/main_visual01.png) no-repeat center center/cover;
  text-align: center;
}

.about_top::before {
  content: "";
  position: absolute;
  inset: 0 0 0 0;
  background: rgba(0, 0, 0, 0.15);
}

.about_top .container {
  padding: 100px 0;
  position: relative;
  z-index: 999;
}

.about_top .container span {
  display: block;
  margin: 0 0 10px 0;
  font-size: 15px;
  font-weight: 300;
  color: #fff;
}

.about_top .container strong {
  display: block;
  margin: 0 0 20px 0;
  font-size: 35px;
  font-weight: 600;
  color: #fff;
}

.about_top .container p {
  color: #fff;
}

.sub_menu {
  border-bottom: 1px solid #ddd;
  height: 45px;
}

.sub_menu .menu .path_link {
  display: flex;
}

.sub_menu .menu .path_link li {
  position: relative;
  padding: 0 12px 0 16px;
  border-right: 1px solid #ddd;
  line-height: 45px;
  cursor: pointer;
}

.sub_menu .menu .path_link li span {
  display: block;
  width: 120px;
}

.sub_menu .menu .path_link li i {
  float: right;
  line-height: 45px;
}

.sub_menu .menu .path_link li:nth-child(1) i {
  font-size: 20px;
}

.sub_menu .menu .path_link .sub {
  position: absolute;
  display: none;
  left: -1px;
  width: 150px;
  z-index: 999;
  background: #fff;
  border-left: 1px solid #ddd;
  border-bottom: 1px solid #ddd;
}

.sub_menu .menu .path_link .sub li:hover {
  background: #ddd;
}

.sub_menu .menu .path_link .sub.on {
  display: block;
}

.about_introduce .content_wrap {
  display: flex;
}

.about_introduce .container {
  width: calc((100% - 1440px) / 2 + 500px);
  background: url(../images/about_introduce.jpg) no-repeat center center/cover;
  margin: 0 0 0 auto;
  min-height: 500px;
}

.about_introduce .content_wrap {
  display: flex;
}

.about_introduce .desc {
  width: 730px;
  transform: translate(28%, 0);
}

.about_introduce .desc p:nth-child(1) {
  margin: 0 0 40px 0;
  font-family: "Noto Serif KR";
  font-size: 28px;
}

.about_introduce .desc p {
  margin: 0 0 25px 0;
  line-height: 22px;
}