html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  font-size: 12px;
  padding: 0;
  font-family: Helvetica Neue, Helvetica, Arial, Microsoft Yahei,
    Hiragino Sans GB, Heiti SC, WenQuanYi Micro Hei, sans-serif;
}
a {
  text-decoration: none;
  color: white;
}
::-webkit-scrollbar {
  display: none;
}
li,
ol,
ul {
  list-style: none;
}
/* body {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
} */
p {
  margin: 0;
  padding: 0;
}
.main {
  min-height: 100%;
  /* height: 100%; */
  margin: 0 auto;
  /* padding: 0 0 0.4rem 0; */
  max-width: 3.75rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  background: url("../image/Mask_group@3x.jpeg");
  background-size: 100%;
}
.menu {
  width: 100%;
  box-sizing: border-box;
  display: flex;
  align-items: center;
  padding: 0 0.15rem;
  height: 0.44rem;
  background: rgba(255, 255, 255, 1);
}
.menu_on {
  border-bottom: 2px solid #4263eb !important;
  color: #4263eb !important;
}
.menu span {
  margin-left: 0.43rem;
  font-weight: 500;
  color: #1d2f3c;
  font-size: 20px;
  padding-bottom: 0.05rem;
  border-bottom: 2px solid transparent;
}
.menu_button {
  padding: 0 0.1rem;
  height: 0.25rem;
  background: rgba(255, 255, 255, 1);
  border-radius: 0.04rem;
  text-align: center;
  line-height: 0.25rem;
  color: rgba(66, 99, 235, 1);
  font-size: 0.12rem;
}
.label {
  margin-top: 0.2rem;
  font-size: 0.3rem;
  font-weight: 500;
  color: white;
  text-align: center;
}
.title {
  font-size: 0.2rem;
  font-weight: 500;
  margin-top: 0.23rem;
  color: white;
  text-align: center;
}
.detail {
  margin-top: 0.21rem;
  font-size: 0.14rem;
  display: block;
  color: white;
  text-align: center;
}
.slideTxtBox .hd {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.slideTxtBox .hd li {
  width: 0.8rem;
  background-size: 100%;
  height: 1.1rem;
  margin-top: 0.3rem;
}
.slideTxtBox .hd ul {
  display: flex;
  flex-wrap: wrap;
  text-align: center;
  padding: 0 0.36rem;
  /* justify-content: space-between; */
}

.slideTxtBox .hd li:first-child {
  background-image: url(../image/tutorial1-1.png);
}
.slideTxtBox .hd li:nth-child(2) {
  margin: 0.3rem 0.3rem 0 0.3rem;
  background-image: url(../image/tutorial2-1.png);
}
.slideTxtBox .hd li:nth-child(3) {
  background-image: url(../image/tutorial3-1.png);
}
.slideTxtBox .hd li:nth-child(4) {
  background-image: url(../image/tutorial4-1.png);
}
.slideTxtBox .hd li:nth-child(5) {
  margin: 0.3rem 0.3rem 0 0.3rem;
  background-image: url(../image/tutorial5-1.png);
}
.slideTxtBox .hd li:nth-child(6) {
  background-image: url(../image/tutorial6-1.png);
}
.slideTxtBoxs .hd li:first-child {
  background-image: url(../image/tutorial1-1.png);
}
.slideTxtBoxs .hd li:nth-child(2) {
  margin: 0.3rem 0.3rem 0 0.3rem;
  background-image: url(../image/tutorial2-1.png);
}
.slideTxtBoxs .hd li:nth-child(3) {
  background-image: url(../image/tutorial3-1.png);
}
.slideTxtBoxs .hd li:nth-child(4) {
  background-image: url(../image/tutorial4-1.png);
}
.slideTxtBoxs.hd li:nth-child(5) {
  margin: 0.3rem 0.3rem 0 0.3rem;
  background-image: url(../image/tutorial5-1.png);
}
.slideTxtBoxs .hd li:nth-child(6) {
  background-image: url(../image/tutorial6-1.png);
}
.slideTxtBoxs .hd li:nth-child(7) {
  background-image: url(../image/tutorial7-1.png);
}
.slideTxtBoxs .hd li:nth-child(8) {
  margin: 0.3rem 0.3rem 0 0.3rem;
  background-image: url(../image/tutorial8-1.png);
}
.slideTxtBoxs .hd li:nth-child(9) {
  background-image: url(../image/tutorial10-1.png);
}
.slideTxtBoxs .hd li:nth-child(10) {
  background-image: url(../image/tutorial10-3.png);
}
.vodes {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 100;
  color: #fff;
  background-color: #000;
}
.vodes div {
  width: 100%;
  height: 1rem;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  text-align: right;
}
.vodes div span {
  padding-right: 0.4rem;
  font-size: 0.18rem;
}
.vodes video {
  width: 100%;
  height: calc(100% - 1rem);
}
.title_item {
  padding: 0 0.2rem;
  margin: 0;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}
.title_item .on {
  color: #4263eb;
  background: #ffffff;
}
.title_item li {
  margin-top: 0.23rem;
  border-radius: 7.3px;
  border: 1px solid #ffffff;
  box-sizing: border-box;
  background: #4263eb;
  width: 1.6rem;
  height: 0.44rem;
  text-align: center;
  color: #ffffff;
  font-weight: 400;
  font-size: 0.18rem;
  line-height: 0.44rem;
}
.bg {
  width: 3.15rem;
  height: 3.93rem;
  flex-shrink: 0;
  border-radius: 0.07rem;
  border: 1px solid #b8c5f8;
  background: linear-gradient(
    180deg,
    #dde9ff 0%,
    rgba(228, 231, 248, 0.25) 101.9%
  );
  display: flex;
  flex-direction: column;
  align-items: center;
}
.qr_bg {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.bg_1 {
  width: 3.15rem;
  height: 0.82rem;
  flex-shrink: 0;
  border-radius: 0.07rem;
  border: 1px solid #b8c5f8;
  background: #dde9ff;
  margin-top: 0.26rem;
}
.qrcode {
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
  margin-bottom: 0.18rem;
}
.num_text {
  color: #000;
  text-align: center;
  font-size: 0.29rem;
  font-weight: 600;
}
.num_text1 {
  color: #000;
  text-align: center;
  font-size: 0.18rem;
  font-weight: 400;
  margin: 0.2rem 0.33rem 0.4rem 0.33rem;
}
.num_text2 {
  color: #000;
  font-size: 0.14rem;
  font-style: normal;
  font-weight: 400;
  line-height: normal;
  margin-bottom: 0.18em;
}
.num_text3 {
  color: #4263eb;
  font-size: 0.14rem;
  font-style: normal;
  font-weight: 600;
  line-height: normal;
  margin: 0.1rem 0.15rem 0 0.15rem;
}
.num_text5 {
  color: #4263eb;
  font-size: 0.14rem;
  font-style: normal;
  font-weight: 600;
  line-height: normal;
  width: 2.2rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow-wrap: break-word;
  margin: 0.05rem 0.4rem 0 0.15rem;
  text-decoration-line: underline;
}
.num_text4 {
  margin-top: 0.23rem;
  margin-bottom: 0.2rem;
  color: #000;
  font-size: 0.18rem;
  font-style: normal;
  font-weight: 600;
  line-height: normal;
}
.video_bg {
  padding-left: 0.4rem;
  margin-bottom: 0.9rem;
}
#item1 {
  display: none;
  width: 100%;
  margin-top: 0.4rem;
}
#video1 {
  width: 3rem;
  height: 1.3rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-radius: 0.06rem;
}
.go_back {
  width: 0.24rem;
  height: 0.24rem;
}