#app {
  width: 100vw;
  height: 100vh;
  background: #fff url("https://fe-static.xhscdn.com/formula-static/ugc/public/img/background.88556a8.png") no-repeat scroll 50%/cover content-box;
  display: flex;
}

#app > .main {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

#app > .main > div {
  width: 1480px;
  display: flex;
}

#app > .main > div > .left {
  flex: 1;
  position: relative;
  transform: translateY(-130px);
}

#app > .main > div > .left > .slogan {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

#app > .main > div > .left > .slogan > span:nth-child(1) {
  font-size: 32px;
  font-weight: bold;
  color: #494949;
}

#app > .main > div > .left > .slogan > span:nth-child(2) {
  font-size: 32px;
  font-weight: bold;
  color: #494949;
  margin-bottom: 8px;
}

#app > .main > div > .left > .slogan > span:nth-child(3) {
  font-size: 14px;
  color: #9c9c9c;
}

#app > .main > div > .left > .video-list {
  position: relative;
  transform: translateY(30px);
}

#app > .main > div > .left > .video-list > div {
  position: absolute;
  border-radius: 300px;
  overflow: hidden;
}

#app > .main > div > .left > .video-list > div video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

#app > .main > div > .left > .video-list > div:nth-child(1) {
  top: 0;
  left: 450px;
  width: 150px;
  height: 150px;
}

#app > .main > div > .left > .video-list > div:nth-child(2) {
  top: 120px;
  left: 0;
  width: 180px;
  height: 180px;
}

#app > .main > div > .left > .video-list > div:nth-child(3) {
  top: 140px;
  left: 230px;
  width: 250px;
  height: 250px;
}

#app > .main > div > .left > .video-list > div:nth-child(4) {
  top: 130px;
  left: 620px;
  width: 130px;
  height: 130px;
}

#app > .main > div > .left > .video-list > div:nth-child(5) {
  top: 210px;
  left: 780px;
  width: 90px;
  height: 90px;
}

#app > .main > div > .left > .video-list > div:nth-child(6) {
  top: 380px;
  left: 90px;
  width: 170px;
  height: 170px;
}

#app > .main > div > .left > .video-list > div:nth-child(7) {
  top: 300px;
  left: 500px;
  width: 230px;
  height: 230px;
}

#app > .main > div > .right {
  height: 500px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 14px;
}

#app > .main > div > .right > .tips {
  color: #4d4d4d;
  font-size: 24px;
  letter-spacing: 2px;
  font-weight: bold;
}

#app > .main > div > .right > .login-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.039);
  cursor: pointer;
  transition: 0.2s all;
}

#app > .main > div > .right > .login-btn > img {
  width: 28px;
  height: 28px;
}

#app > .main > div > .right > .login-btn > span {
  font-size: 22px;
  color: #5b5b5b;
}

#app > .main > div > .right > .login-btn:hover {
  background: #f8f8f8;
}