@keyframes dow_arr1 {
  0% {
    opacity: 0;
  }
  24% {
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes dow_arr2 {
  0% {
    opacity: 0;
  }
  49% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
  }
}
@keyframes large-s {
  0% {
    transform: scale(1);
  }
  100% {
    transform: scale(1.05);
  }
}
.banner {
  width: 100%;
  overflow: hidden;
  position: relative;
}
.banner .txt {
  width: 100%;
  position: absolute;
  top: 40%;
  left: 7.5%;
  transform: translateY(-50%);
}
.banner .txt p {
  color: #fff;
}
.banner .txt span {
  color: #fff;
  display: inline-block;
}
.subnav {
  width: 100%;
  position: relative;
  z-index: 2;
}
.subnav ul {
  width: 100%;
  background-color: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0px 0px 8px #ccc;
}
.subnav ul li {
  padding: 0 1.5rem;
  line-height: 100px;
  color: #333;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.subnav ul li.on {
  color: var(--primary-color);
  border-bottom: 2px solid var(--primary-color);
}
.ctn_1 {
  width: 100%;
  overflow: hidden;
  padding: 4rem 0 2rem;
  background-color: #fff;
}
.ctn_1 .title {
  color: #333;
  text-align: center;
}
.ctn_1 ul {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}
.ctn_1 ul li {
  width: 23%;
  border: 1px solid #dbdbdb;
  background-color: #fff;
  padding: 2.5%;
}
.ctn_1 ul li:nth-child(1) .ic {
  background-color: #e94858;
}
.ctn_1 ul li:nth-child(2) .ic {
  background-color: #69ba3d;
}
.ctn_1 ul li:nth-child(3) .ic {
  background-color: #ba633d;
}
.ctn_1 ul li:nth-child(4) .ic {
  background-color: #7a639e;
}
.ctn_1 ul li .ic {
  width: 72px;
  height: 72px;
  position: relative;
  border-radius: 100%;
  margin: 0 auto;
}
.ctn_1 ul li .ic img {
  width: 50px;
  height: 50px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.ctn_1 ul li p {
  display: block;
  text-align: center;
  margin-top: 1.2rem;
  color: #333;
}
.ctn_2 {
  width: 100%;
  overflow: hidden;
  padding: 2rem 0 5rem;
  background-color: #f3f2f0;
}
.ctn_2 .tab {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
}
.ctn_2 .tab p {
  height: 66px;
  width: 31%;
  line-height: 66px;
  background-color: #fff;
  text-align: center;
  color: #333;
  display: block;
  margin-bottom: 20px;
  cursor: pointer;
}
.ctn_2 .tab p.on {
  color: #fff;
  background-color: var(--primary-color);
  height: 86px;
  margin-bottom: 0;
}
.ctn_2 .des .info {
  background-color: #fff;
  padding: 3% 4%;
  display: none;
}
.ctn_2 .des .info h2 {
  color: #333;
  margin-bottom: 1rem;
  font-size: 24px;
}
.ctn_2 .des .info p {
  color: #333;
  font-size: 16px;
  line-height: 1.8;
}
@media screen and (max-width: 1366px) {
  .ctn_1 ul li .ic {
    width: 63px;
    height: 63px;
  }
  .ctn_1 ul li .ic img {
    width: 42px;
    height: 42px;
  }
  .ctn_2 .tab p {
    height: 55px;
    line-height: 55px;
    margin-bottom: 12px;
  }
  .ctn_2 .tab p.on {
    height: 67px;
  }
}
@media screen and (max-width: 1280px) {
  .subnav ul li {
    line-height: 50px;
  }
}
@media screen and (max-width: 998px) {
  .banner img {
    width: 180%;
    margin-left: -40%;
  }
  .banner .txt {
    top: 52%;
  }
}
@media screen and (max-width: 768px) {
  .subnav {
    overflow-x: scroll;
  }
  .subnav ul {
    padding: 0 20px;
    width: auto;
    display: block;
    text-align: center;
    white-space: nowrap;
    box-shadow: none;
  }
  .subnav ul li {
    width: 80px;
    display: inline-block;
    font-size: 12px;
    padding: 0 0.5rem;
  }
  .ctn_1 ul li {
    width: 49%;
    margin-bottom: 2%;
    padding: 4%;
  }
  .ctn_1 ul li .ic {
    width: 56px;
    height: 56px;
  }
  .ctn_1 ul li .ic img {
    width: 34px;
    height: 34px;
  }
  .ctn_2 .tab p {
    height: 40px;
    line-height: 40px;
    margin-bottom: 12px;
  }
  .ctn_2 .tab p.on {
    height: 52px;
  }
}