#sec1 .sec1_cont ul li {
  width: calc((100% - clamp(50px, 4.17vw, 80px)) / 3);
  margin-bottom: clamp(20px, 1.04vw, 20px);
  position: relative;
  transition: all 0.4s;
  margin-right: clamp(25px, 2.08vw, 40px);
}
#sec1 .sec1_cont ul li::before {
  content: "";
  height: 1px;
  width: 100%;
  background-color: #1a49db;
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
  z-index: 1;
}
#sec1 .sec1_cont ul li::after {
  content: "";
  height: 1px;
  width: 100%;
  background-color: #ddd;
  display: block;
  position: absolute;
  left: 0;
  bottom: 0;
}
#sec1 .sec1_cont ul li:nth-child(3n) {
  margin-right: 0;
}
#sec1 .sec1_cont ul li a {
  font-size: clamp(20px, 1.25vw, 24px);
  font-weight: 600;
  color: #444;
  padding: clamp(25px, 1.82vw, 35px) clamp(20px, 1.56vw, 30px);
  transition: all 0.4s;
}
#sec1 .sec1_cont ul li a::after {
  content: "";
  width: clamp(12px, 0.73vw, 14px);
  height: clamp(12px, 0.73vw, 14px);
  background-image: url(../img/sitemap_arrow_g.svg);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: block;
  transition: all 0.4s;
}
#sec1 .sec1_cont ul li:hover {
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}
#sec1 .sec1_cont ul li:hover::before {
  transform: scaleX(1);
}
#sec1 .sec1_cont ul li:hover a {
  color: #1a49db;
}
#sec1 .sec1_cont ul li:hover a::after {
  background-image: url(../img/sitemap_arrow_b.svg);
}

@media (max-width: 750px) {
  #sec1 .sec1_cont ul li {
    width: calc((100% - clamp(15px, 4vw, 30px)) / 2);
    margin-right: clamp(15px, 4vw, 30px);
  }
  #sec1 .sec1_cont ul li:nth-child(3n) {
    margin-right: clamp(15px, 4vw, 30px);
  }
  #sec1 .sec1_cont ul li:nth-child(2n) {
    margin-right: 0;
  }
  #sec1 .sec1_cont ul li a {
    font-size: clamp(16px, 3.73vw, 28px);
    padding: clamp(17px, 1.72vw, 33px) clamp(15px, 1.56vw, 30px);
  }
  #sec1 .sec1_cont ul li a::after {
    width: clamp(7px, 1.87vw, 14px);
    height: clamp(7px, 1.87vw, 14px);
  }
}