@charset "UTF-8";
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background-color: #0b090a;
}

body {
  font: 12px/1 Microsoft YaHei, Tahoma, Helvetica, Arial, sans-serif;
}

img {
  display: block;
  border: 0;
  margin: 0;
  padding: 0;
}

.group {
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 0;
  font-size: 0;
}

.btn1 {
  display: block;
  line-height: 0;
  font-size: 0;
  text-decoration: none;
}

@keyframes fadeinTt {
  0% {
    opacity: 0;
    transform: translateY(-300px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeinBt {
  0% {
    opacity: 0;
    transform: translateY(300px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.logo {
  animation: fadeinTt 1s ease;
}

.btn1 {
  animation: fadeinBt 1s ease;
}

/* 电脑端样式 */
@media (min-width: 768px) {
  body {
    background-color: #0B090A;
  }

  .bg {
    background: url("../images/pcBg.png") no-repeat center top;
    width: 100%;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
  }

  .logo {
    width: 360px;
    height: 100px;
  }

  .btn1 {
    margin-top: 40px;
  }

  .pcBtn {
    width: 431px;
    height: 132px;
  }

  .phoneBtn {
    display: none;
  }
}

/* 手机端样式 */
@media (max-width: 767px) {
  .bg {
    background-image: url("../images/phoneBg.png");
    background-color: #0b090a;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center center;
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .logo {
    width: 4.44rem;
    height: auto;
  }

  .btn1 {
    margin-top: 0.4rem;
  }

  .btn1 img {
    width: 4.05rem;
    height: auto;
  }

  .pcBtn {
    display: none;
  }
}