* {
  margin: 0;
  padding: 0;
}
li {
  list-style: none;
}
html,
body {
  position: relative;
  height: 100%;
}
body {
  font-family: Helvetica Neue, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: #000;
  margin: 0;
  padding: 0;
}

:root {
  --contentWidth: 1200px;
}

.background {
  position: absolute;
  display: block;
  top: 0;
  left: 0;
  z-index: 0;
}

a {
  text-decoration: none;
  color: #333;
}

a:hover {
  text-decoration: underline;
}

.header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.7);
  margin: 0 auto;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header .logo {
  width: 60vw;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.header .logo img {
  width: 200px;
}
.header .logo span {
  font-size: 18px;
  color: #333;
  font-weight: 700;
}

.header .top-menu {
  display: flex;
  justify-content: space-around;
  width: 22vw;
  color: #333;
  font-weight: 700;
  font-size: 22px;
}

.txt-swiper {
  width: 100%;
  height: 100%;
  position: relative;
  z-index: 2;
}

.screen-content {
  /* padding-top: 88px; */
  height: 100%;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
}

.txt-swiper .swiper-pagination {
  color: #fff;
  width: auto;
  right: 3%;
}

.first-screen-title {
  color: #fff;
  font-size: 100px;
}
@media screen and (max-width: 600px) {
  .first-screen-title {
    font-size: 40px;
  }
}

.content-left img {
  max-width: 600px;
  min-width: 300px;
  max-height: 80vh;
}

.content-right {
  max-width: 600px;
  min-width: 300px;
  padding-left: 30px;
  text-align: center;
}

.content-right h2 {
  font-size: 50px;
}

.content-right p {
  margin-top: 30px;
  font-size: 36px;
  /* line-height: 28px; */
}

.txt-swiper .swiper-slide {
  perspective: 50vw;
  perspective-origin: 50% 50%;
}

.last-screen {
  height: 100%;
  position: relative;
}
.last-screen .footer {
  width: 100%;
  position: absolute;
  bottom: 0;
  text-align: center;
  height: 66px;
  line-height: 66px;
}

.about-content {
  padding-top: 88px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.about-content h2 {
  padding: 30px 0;
  font-size: 32px;
}

.about-content p {
  width: 960px;
  text-indent: 2em;
  font-size: 18px;
  line-height: 32px;
  color: #666;
}

.first-screen {
  position: relative;
  background-size: cover;
  background-position: center;
  background-image: url('../images/background.png');
  background-repeat: no-repeat;
}
.appQrCodeContainer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  width: 60%;
  position: absolute;
  right: 50px;
  bottom: 50px;
}
.first-screen .appQrCode img {
  width: 300px;
  margin: 15px;
}
.first-screen .appQrCode .name {
  display: block;
  text-align: center;
  font-size: 18px;
}
@media screen and (max-width: 600px) {
  .first-screen {
    background-position: 30%;
  }
  .appQrCodeContainer {
    position: unset;
  }
  .first-screen .appQrCode img {
    width: 200px;
  }
}