* {
  margin: 0;
  padding: 0;
  font-family: "Arial", sans-serif;
}

.head {
  position: absolute;
  width: 100vw;
  height: 25vw;
  background-color: black;
  text-align: center;
  color: white;
  background-image: url("../img/netease.jpg");
  background-size: 100vw;
  background-position-y: -55vw;
}

.headtitle {
  font: 800 4.6vw Arial, sans-serif;
  position: relative;
  top: 15vw;
}

.headsubtitle {
  font: 200 1.5vw Arial, sans-serif;
  position: relative;
  top: 15.5vw;
}

.menu {
  position: absolute;
  width: 45vw;
  height: 4vw;
  left: 27.5vw;
  top: 27vw;
  display: flex;
  list-style-type: none;
}

.mn {
  background-color: rgb(100, 100, 100);
  width: 15vw;
  height: 2.5vw;
  margin-top: 0.5vw;
  margin-left: 0.3vw;
  margin-right: 0.3vw;
  flex-direction: row;
  text-align: center;
  font-size: 1.5vw;
  padding-top: 0.5vw;
  cursor: pointer;
}

a {
  color: white;
  text-decoration: none;
}

.bio {
  position: absolute;
  width: 80vw;
  height: 15vw;
  left: 10vw;
  top: 32vw;
  font: 200 1.25vw Arial, Sans-serif;
  line-height: 1.5;
}

.resume {
  position: relative;
  left: 2vw;
  top: 1vw;
}

.service-demo {
  position: absolute;
  width: 80vw;
  height: 30vw;
  left: 10vw;
  top: 56vw;
}

.demo-title {
  font: 800 3vw Arial, sans-serif;
  position: relative;
  margin-top: 0.9vw;
}

.svs-pic-part {
  position: relative;
  top: 1vw;
  width: 80vw;
  display: flex;
  gap: 3vw;
}

.svs_pic {
  position: relative;
  width: 25vw;
  height: calc(25vw * 9 / 16);
  overflow: hidden;
  border-radius: 2vw;
  cursor: pointer;
}

.notehead {
  position: relative;
  width: 3vw;
  top: 0.6vw;
  left: -1vw;
}


.bg_img {
  position: absolute;
  width: 100vw;
  object-fit: cover;
  opacity: 0.2;
  z-index: -1;
}

.pic {
  text-align: center;
}

.vidtitle {
  font-size: 1.25vw;
  margin-top: 1vw;
}

@media screen and (min-height: 140vw) {
  .headtitle {
    font-size: 8vw;
    top: 12vw;
  }

  .headsubtitle {
    font-size: 3vw;
    top: 13vw;
  }

  .head {
    background-position-x: -8vw;
    height: 30vw;
  }

  .menu {
    top: 32vw;
  }

  .mn {
    font-size: 2vw;
    padding-bottom: 0.5vw;
  }

  .bio {
    top: 37.5vw;
    font-size: 2vw;
  }

  .demo-title {
    margin-top: 2.8vw;
  }

  .service-demo {
    top: 90vw;
  }

  .svs-pic-part {
    display: flex;
    flex-wrap: wrap;
  }

  .svs_pic {
    width: 80vw;
    height: calc(80vw * 9 / 16);
    border-radius: 2vw;
    margin-bottom: 3vw;
  }

  .bg_img {
    position: absolute;
    width: 100vw;
    height: 240vw;
    object-fit: cover;
    opacity: 0.2;
    z-index: -1;
  }

  .vid_title {
    font-size: 2vw;
    margin-top: -2vw;
    padding-bottom: 1.5vw;
  }

}