body {
  overflow: hidden;
}
main .about-wrapper .about-us {
  position: relative;
  overflow: hidden;
  margin-bottom: 0;
  background: url(../images/mask.png) no-repeat left top / 110% 100%;
  color: #fff;
  height: 100vh;
  padding: 50vh 7vw 0;
  font-family: JinBuTi;
}
main .about-wrapper .about-us img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}
main .about-wrapper .about-us p {
  line-height: 1.4;
  font-size: 1em;
  margin: 0;
  text-indent: 2em;
}
main .about-wrapper h1 {
  margin-top: 0.5em;
  font-size: 4vw;
}
main .about-wrapper h4 {
  font-size: 2vw;
  margin-bottom: 0;
}
main .year-tab {
  height: 100vh;
  padding: 15vh 7vw 0;
  background: #F5F7F2;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  color: #333;
  font-size: 1.1vw;
}
main .year-tab img {
  width: 55%;
  height: 70vh;
}
main .year-tab ul {
  display: flex;
  flex-basis: 40%;
  justify-content: space-between;
  align-items: self-end;
  gap: 2em;
  overflow: hidden;
}
main .year-tab ul li {
  display: inline-block;
}
main .year-tab ul li > span {
  cursor: pointer;
}
main .year-tab ul li h5 {
  margin: 0;
  font-size: 1em;
  color: #333;
}
main .year-tab ul li.active > span {
  color: #5E33F6;
  font-size: 1.5em;
  font-weight: bold;
}
main .year-tab ul li.active section {
  display: block;
}
main .year-tab ul li section {
  position: absolute;
  left: 7vw;
  display: none;
  height: 60vh;
  width: 35%;
  padding-right: 1em;
  overflow: auto;
  margin: 2.5vw 0;
  color: #120522;
  font-size: 0.8em;
  line-height: 1.4;
  text-align: justify;
}
main .year-tab ul li section::-webkit-scrollbar {
  width: 0.5vw;
  background-color: unset;
  /* or add it to the track */
}
main .year-tab ul li section::-webkit-scrollbar-thumb {
  border-radius: 10px;
  background: #D8D8D8;
}
main .cooperate {
  position: relative;
  height: 100vh;
  padding: 7vh 7vw 0;
  background: #120522;
  font-family: JinBuTi;
  color: #fff;
  font-size: 3vw;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
}
main .cooperate h3 {
  font-size: 0.6em;
  margin-bottom: 0;
}
main .cooperate h2 {
  font-size: 1em;
  margin: 0;
  line-height: 2;
}
main .cooperate #logoContainer {
  position: absolute;
  top: 10vh;
  left: 0;
  width: 100%;
  height: 100%;
}
main .cooperate #logoContainer img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0;
  width: 5%;
  height: auto;
  object-fit: contain;
  will-change: transform;
}