.web {
  position: relative;
  height: 960px;
}

.web img {
  width: 100%;
  height: 100%;
}

.web .mainbox {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  top: 173px;
  color: #fff;
  text-align: center;
}

.web .mainbox .logo {
  width: 177px;
  height: 146px;
  margin: 0 auto;
}

.web .mainbox .logo img {
  width: 100%;
}

.web .mainbox h4 {
  font-size: 46px;
  line-height: 140px;
  animation-delay: .2s;
}

.web .mainbox h3 {
  font-size: 30px;
  margin-bottom: 7px;
  animation-delay: .4s;
}

.web .mainbox h5 {
  font-size: 19px;
  margin-bottom: 30px;
  animation-delay: .6s;
}

.web .mainbox .btnbox {
  margin-bottom: 230px;
  animation-delay: 0.8s;
  cursor: pointer;
}

.web .mainbox .btnbox .yes {
  margin-right: 36px;
}

.web .mainbox .btnbox .yes, .web .mainbox .btnbox .no {
  width: 170px;
  height: 78px;
  border-radius: 38px;
  display: inline-block;
  background-color: #fff;
  font-size: 38px;
  color: #005535;
  line-height: 78px;
}

.web .mainbox .tip {
  animation-delay: 1.0s;
}

.web .mainbox .detip {
  animation-delay: 1.2s;
}

.web .mainbox p {
  font-size: 14px;
  line-height: 32px;
  white-space: nowrap;
}

.web .video-container {
  width: 300px;
  height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  margin: 0 auto;
}

.web #mask {
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.83);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
}

.web .pop-container {
  width: 250px;
  height: 200px;
  background: white;
  border-radius: 5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.web button {
  width: 50px;
  height: 30px;
  border-radius: 4px;
}

@media (max-width: 1440px) {
  .web img {
    object-fit: cover;
  }
}

@media (max-width: 1220px) {
  .web .mainbox h4 {
    font-size: 42px;
    white-space: nowrap;
  }
  .web .mainbox .btnbox .yes, .web .mainbox .btnbox .no {
    width: 160px;
    height: 68px;
    line-height: 68px;
    font-size: 35px;
  }
}

@media (max-width: 768px) {
  .web .mainbox h4 {
    font-size: 32px;
  }
  .web .mainbox h3 {
    font-size: 26px;
  }
  .web .mainbox h5 {
    font-size: 18px;
  }
  .web .mainbox .btnbox .yes, .web .mainbox .btnbox .no {
    width: 140px;
    height: 50px;
    line-height: 50px;
    font-size: 30px;
  }
}

@media (max-width: 480px) {
  .web::-webkit-scrollbar {
    display: none;
  }
  .web .mainbox {
    top: 60px;
  }
  .web .mainbox h4 {
    font-size: 22px;
  }
  .web .mainbox h3 {
    font-size: 20px;
  }
  .web .mainbox h5 {
    font-size: 14px;
  }
  .web .mainbox p {
    font-size: 12px;
  }
  .web .mainbox .btnbox {
    margin-bottom: 160px;
  }
  .web .mainbox .btnbox .yes, .web .mainbox .btnbox .no {
    width: 125px;
    height: 45px;
    line-height: 46px;
    font-size: 22px;
  }
}