.header {
  background: #000;
}

/* 内容区域 */
.main {
  width: 100%;
  /* height: 990px; */
  /* margin-top: 78px; */
  position: relative;
  overflow: hidden;
  background: url(bg.jpg) center/cover no-repeat;
}

.main_video {
  position: absolute;
  width: 100%;
  height: 990px;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.btns {
  position: absolute;
  text-align: center;
  width: 100%;
  bottom: 20%;
}

.btns a {
  display: inline-block;
  margin: 0 100px;
  transition: transform 0.5s, filter 0.5s;
}

.btns a:hover {
  transform: translateY(-10px);
  filter: brightness(1.2);
}

.btns-os {
  background: url(../images/icon/btns.png) 0 0 no-repeat;
  width: 300px;
  height: 80px;

}
.btns-get {
  background: url(../images/icon/btns.png) -321px 0 no-repeat;
  width: 298px;
  height: 80px;

}
.btns-dl {
  background: url(../images/icon/btns.png) -638px 0 no-repeat;
  left: 19px;
  width: 298px;
  height: 80px;
}

.alogo {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
}

/* 底部区域 */
.afoot {
  width: 100%;
  background: #000;
}

.afoot-wrap {
  width: 1240px;
  margin: 0 auto;
  padding: 30px 0;
  color: #6e6e6e;
  font-size: 12px;
  text-align: center;
}