* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow-x: hidden;
  font-family: Arial, sans-serif;
}

li {
  list-style: none;
}

/*  首页pc样式  */
.main-container {
  margin: 0 auto;
  text-align: center;
  width: 100%;
  height: 100vh;
  display: flex;
  flex-flow: column;
  justify-content: center;
  align-items: center;
  padding: 0 12vw;
  background: url('../imgs/index/pc_binance.jpg') no-repeat center top;
  background-size: cover;
}
.main-container .download-btn {
  margin-top: 6vh;
  display: flex;
  flex-flow: column;
}

.main-container .download-text img,
.main-container .download-btn img {
  width: 100%;
}

.main-container .download-text .pc-img-text {
  display: block;
}
.main-container .download-text .mobile-img-text {
  display: none;
}

/*  下载教程页  */
.tutorial-container {
  background: url('../imgs/tutorial/static/beij.jpg') center no-repeat;
  min-height: 100vh;
  padding-bottom: 30px;
}
.tutorial-container .tutor-header {
  height: 135px;
  background-image: url('../imgs/tutorial/static/header.png');
  background-size: auto 100%;
  background-position: center;
  padding: 0 8%;
  display: flex;
}

.tutorial-container .tutor-header .header-logo,
.tutorial-container .tutor-header .header-text {
  flex: 1;
}
.tutorial-container .tutor-header .header-logo {
  margin-top: 6px;
  height: 124px;
}
.tutorial-container .tutor-header .header-logo img {
  height: 100%;
}
.tutorial-container .tutor-header .header-text {
  text-align: right;
  color: #0d4c77;
  font-size: 43px;
  line-height: 85px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}


.tutorial-container .tabs-box {
  padding: 0 8%;
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
}
.tutorial-container .tabs-box .tab-item {
  display: inline-block;
  border-radius: 100px;
  overflow: hidden;
  background: #e2e2e2;
  width: 460px;
  line-height: 43px;
  border: 3px #063351 solid;
  text-align: center;
  font-size: 22PX;
  margin: 9px;
  cursor: pointer;
  text-shadow: -1px -1px 0 #4f4d57, 1px -1px 0 #4f4d57, -1px 1px 0 #4f4d57, 1px 1px 0 #4f4d57, 5px 5px 10px rgba(1, 1, 1, 1);
  color: #f2f2f2;
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

.tutorial-container .tabs-box .tab-item.active {
  color: #FFFF00;
  background: url('../imgs/tutorial/static/keb.png') 100%;
}

.tutorial-container .content-container {
  margin-top: 10px;
}
.tutorial-container .content-container .content-box {
  display: none;
}
.tutorial-container .content-container .content-box.active {
  display: block;
}
.tutorial-container .content-container .content-box .content-title {
  font-size: 53px;
  background-image: -webkit-linear-gradient(bottom, #eac728, #fdea3d, #fff);
  -webkit-background-clip: text;
  color: transparent;
  text-align: center;
  margin: 10px auto;
}
.tutorial-container .content-container .content-item swiper-container {
  width: calc(100% - 100px);
  margin: 0 auto;
}

.tutorial-container .slide-item span {
  color: #fff;
  font-size: 18px;
  /*width: 260px;*/
  text-align: center;
  padding-left: 17px;
  margin-top: 10px;
  display: inline-block;
  width: 100%;
}

.tutorial-container .content-container .content-item .video {
  width: 100%;
}
.tutorial-container .content-container .content-item .video::-webkit-media-controls {
  width: 100% !important;
}

.tutorial-container .mobile-item {
  display: none;
}

.tutorial-container .pc-item {
  display: block;
}

.tutorial-container .pc-item ul {
  max-width: 1205px;
  margin: 0 auto;
  width: 95%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.tutorial-container .pc-item ul.slide-content {
  grid-template-columns: repeat(4, 1fr);
  gap: 10px 80px;
}

.tutorial-container .pc-item ul .slide-item {
  margin-bottom: 20px;
}

.tutorial-container .device-img {
  width: 68px;
  overflow: hidden;
  position: fixed;
  top:20%;
  left: 15px;
  z-index: 111;
}
.tutorial-container .device-img img {
  width: 100%;
}
.tutorial-container .device-img a {
  display: none;
}

@media screen and (max-width: 768px) {
  /*  首页mobile样式  */
  .main-mobile-container {
    background: url('../imgs/index/mobile_binance.jpg') no-repeat center top;
    background-size: cover;
  }
  .main-mobile-container .download-text .mobile-img-text {
    display: block;
  }
  .main-mobile-container .download-text .pc-img-text {
    display: none;
  }

  /*  下载教程mobile样式  */
  .tutorial-mobile-container .tutor-header {
    height: 55px;
    padding: 0 2.5%;
  }
  .tutorial-mobile-container .tutor-header .header-logo {
    height: 44px;
  }
  .tutorial-mobile-container .tutor-header .header-text {
    font-size: 16px;
    line-height: 40px;
  }

  .tutorial-mobile-container .tutorial-container .tabs-box {
    padding: 0 2.5%;
  }

  .tutorial-mobile-container .tabs-box .tab-item {
    width: 100%;
    font-size: 15px;
    margin: 1% auto;
    line-height: 36px;
  }

  .tutorial-mobile-container .content-container .content-box .content-title {
    font-size: 24px;
  }

  .tutorial-mobile-container .content-container .content-item swiper-slide img {
    width: 100%;
  }
  .tutorial-mobile-container .content-container .content-item {
    position: relative;
  }
  .tutorial-mobile-container .button-prev,
  .tutorial-mobile-container .button-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 22px;
    height: 33px;
    border: none;
    outline: none;
  }

  .tutorial-mobile-container .button-prev {
    background: url('../imgs/tutorial/static/left.png') no-repeat;
    background-size: 100% 100%;
    left: 15px;
  }
  .tutorial-mobile-container .button-next {
    background: url('../imgs/tutorial/static/right.png') no-repeat;
    background-size: 100% 100%;
    right: 15px;
  }

  .tutorial-mobile-container .mobile-item {
    display: block;
    position: relative;
  }
  .tutorial-mobile-container .pc-item {
    display: none;
  }
}