body {
  overflow-x: hidden;
}

* {
  box-sizing: border-box;
}

header {
  width: 1920px;
  height: 56px;
  margin: 0 auto;
}

@media (min-width: 1600px) {
  header .wrapper {
    width: 71% !important;
  }

  header .wrapper > .wrapper {
    width: 100% !important;
  }
}

header .yxd::before {
  content: "";
  display: none !important;
}

header .ms-header-img a {
  display: flex;
  align-items: center;
  height: 56px;
  line-height: 56px;
}

header #main-menu > ul > li > a > span {
  height: auto;
}

header .ms-header #main-menu > .header-user {
  top: 0;
}

header .header .header-top ul li a {
  font-size: 14px;
}

header .header {
  margin-bottom: 0;
}

header .apps {
  position: fixed;
  right: 50px;
  bottom: 200px;
  z-index: 1000;
  width: 90px;
  height: 90px;
}

header .apps img {
  width: 100%;
  height: 100%;
}

header .apps .iconfont {
  position: absolute;
  color: #cccccc;
  top: -20px;
  right: -20px;
  cursor: pointer;
  font-weight: bold;
  text-align: center;
}

header .index-user-img {
  position: relative;
}

header .index-user-img:hover .ms-dropdown-menu {
  display: block;
}

header .index-user-img a {
  padding-top: 10px !important;
  padding-bottom: 0px !important;
}

header .index-user-img .img-area {
  display: inline-block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  overflow: hidden;
}

header .index-user-img .ms-dropdown-menu {
  display: none;
  right: 0;
  min-width: 124px;
  padding-top: 4px;
  position: absolute;
  top: 100%;
  z-index: 101;
}

header .index-user-img .ms-dropdown-menu .ms-dropdown-content {
  background-color: white;
  border-radius: 3px;
  box-shadow: 0 2px 3px rgba(10, 10, 10, 0.1), 0 0 0 1px rgba(10, 10, 10, 0.1);
  padding-bottom: 4px;
  padding-top: 6px;
}

header .index-user-img .ms-dropdown-menu .ms-dropdown-content hr {
  margin-top: 5px;
  margin-bottom: 5px;
}

header .index-user-img .ms-dropdown-menu .ms-dropdown-content .ms-dropdown-item {
  display: block;
  font-size: 14px;
  line-height: 32px;
  text-align: center;
  color: #232323;
  padding: 0 !important;
  width: 124px;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

header .index-user-img .ms-dropdown-menu .ms-dropdown-content .ms-dropdown-item:hover {
  background: rgba(47, 146, 238, 0.1);
}

header .search_bar {
  position: absolute;
  top: 10px;
  right: 100px;
  width: 250px;
  height: 30px;
  z-index: 9999;
}

header .search_bar input {
  border-radius: 5px;
  background: #f5f5f5;
  display: block;
  width: 100%;
  height: 100%;
  border: none;
  outline: medium;
  padding: 0 40px 0 12px;
}

header .search_bar button {
  display: block;
  position: absolute;
  top: 0;
  right: 0;
  background-color: transparent;
  height: 30px;
  line-height: 30px;
  padding: 0;
  width: 40px;
}

header .search_bar button i {
  color: #232323;
}

main {
  margin: 0 auto;
  width: 100%;
  overflow: hidden;
}

.slogan {
  position: relative;
  width: 100%;
  max-width: 1920px;
  margin: 0 auto;
  height: 646px;
  background-image: url("https://static.medsci.cn/public-image/ms-image/14b11a90-5e48-11ec-8e2f-1389d01aad85_bg.png");
  background-size: cover;
}

.slogan h1 {
  position: absolute;
  left: 19%;
  top: 187px;
  color: #333333;
  font-size: 54px;
  font-weight: 600;
}

.slogan h2 {
  position: absolute;
  left: 19%;
  top: 273px;
  font-weight: 400;
  font-size: 28px;
  color: #494949;
  letter-spacing: 1px;
}

.slogan h2 span {
  color: #2f92ee;
  font-weight: 600;
}

.slogan a {
  position: absolute;
  left: 19%;
  top: 385px;
  width: 185px;
  height: 61px;
  background: #2f92ee;
  border-radius: 6px;
  text-align: center;
  line-height: 61px;
  font-size: 24px;
  color: #ffffff;
  letter-spacing: 0;
  text-decoration: none;
}

.feature {
  margin: 101px auto;
  text-align: center;
}

.feature h1 {
  font-size: 36px;
  color: #333333;
  letter-spacing: 0;
  margin: 0;
  padding: 0;
}

.feature > .desc {
  width: 540px;
  margin: 18px auto 0;
  font-size: 20px;
  color: #757575;
  letter-spacing: 0;
  text-align: center;
  line-height: 40px;
}

.feature .box {
  margin: 77px auto 0;
  padding: 26px 48px;
  width: 1200px;
  height: 420px;
  background: #f9f9f9;
  border-radius: 4px;
}

.feature .box .title {
  text-align: left;
  font-size: 22px;
  color: #333333;
  letter-spacing: 0;
}

.feature .box .desc {
  margin: 10px 17px 0 18px;
  text-align: left;
  font-size: 18px;
  color: #333333;
  letter-spacing: 0;
  line-height: 30px;
}

.feature .box .content {
  display: flex;
  justify-content: space-between;
}

.feature .box .content img {
  width: 342px;
  height: 180px;
}

.feature .box .content .title {
  margin: 23px 0 0 18px;
  font-weight: 600;
  font-size: 20px;
  color: #333333;
  letter-spacing: 0;
}

.feature .box .content figure {
  width: 342px;
  height: 314px;
  background: #ffffff;
  border-radius: 6px;
  margin-top: 20px;
}

.advantage {
  margin: 136px auto 0;
  text-align: center;
}

.advantage h1 {
  font-size: 36px;
  color: #333333;
  letter-spacing: 0;
  margin: 0;
  padding: 0;
}

.advantage > .desc {
  margin: 18px auto 0;
  font-size: 20px;
  color: #757575;
  letter-spacing: 0;
  text-align: center;
  line-height: 40px;
}

.advantage > .item {
  width: 1200px;
  margin: 64px auto;
  display: flex;
  justify-content: space-between;
  text-align: left;
}

.advantage > .item > .sub {
  width: 382px;
  height: 279px;
  background: #2f92ee;
  border-radius: 4px;
}

.advantage > .item > .sub .title {
  margin: 49px 0 0 41px;
  font-weight: 500;
  font-size: 22px;
  color: #ffffff;
  letter-spacing: 1px;
}

.advantage > .item > .sub .title span {
  opacity: 0.6;
  font-weight: 500;
  font-size: 18px;
  color: #ffffff;
  letter-spacing: 0;
}

.advantage > .item > .sub .container {
  display: grid;
  grid-template-columns: repeat(2, 171px);
  margin: 51px 0 0 0px;
  row-gap: 32px;
  -moz-column-gap: 10px;
       column-gap: 10px;
  text-align: center;
}

.advantage > .item > .sub .container > div {
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  font-size: 18px;
  color: #ffffff;
  letter-spacing: 0;
}

.advantage > .item > .sub .container > div img {
  margin-right: 8px;
}

.advantage > .item .sub:nth-child(2) {
  background: #272e3b;
}

.more {
  width: 1200px;
  height: 105px;
  border: 1px solid #dbdbdb;
  border-radius: 9px;
  margin: -27px auto 0;
  display: grid;
  grid-template-columns: repeat(4, 300px);
}

.more > div {
  position: relative;
}

.more > div img {
  position: absolute;
  top: 26px;
  left: 48px;
}

.more > div .title {
  position: absolute;
  top: 27px;
  left: 101px;
  font-weight: 600;
  font-size: 18px;
  color: #333333;
  letter-spacing: 0;
  text-align: center;
}

.more > div .desc {
  position: absolute;
  top: 59px;
  left: 101px;
  font-size: 14px;
  color: #535d6d;
  letter-spacing: 0;
  text-align: center;
}

footer {
  width: 100%;
  max-width: 1920px;
  height: 425px;
  background-image: url("https://static.medsci.cn/public-image/ms-image/f8f79f30-5efc-11ec-8e2f-1389d01aad85_2.png");
  background-size: cover;
  margin: 136px auto 0;
  position: relative;
}

footer .title {
  position: absolute;
  top: 90px;
  left: 50%;
  transform: translate(-50%);
  font-weight: 600;
  font-size: 44px;
  color: #383838;
  letter-spacing: 0;
  text-align: center;
}

footer .desc {
  position: absolute;
  top: 175px;
  left: 50%;
  transform: translate(-50%);
  font-weight: 600;
  font-size: 24px;
  color: #2f92ee;
  letter-spacing: 0;
  text-align: center;
}

footer .btnStart {
  position: absolute;
  top: 257px;
  left: 50%;
  transform: translate(-50%);
  background-image: url("https://static.medsci.cn/public-image/ms-image/f8f79f30-5efc-11ec-8e2f-1389d01aad85_1.png");
  background-size: cover;
  width: 123px;
  height: 51px;
}