* {
  margin: 0;
  padding: 0;
  --primary-color: #e7141a;
}
body {
  width: 100vw;
  overflow: hidden;
}
.swiper-wrapper {
  height: 100vh;
  width: 100vw;
  position: relative;
}
.swiper-wrapper .swiper-slide {
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.swiper-wrapper .swiper-slide1 .launch-screen {
  position: absolute;
  width: 100%;
  height: 100vh;
  top: 0;
  left: 0;
  background: var(--primary-color);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  transition: all 0.5s ease-in;
}
.swiper-wrapper .swiper-slide1 .launch-screen .logo {
  width: 60px;
  height: 60px;
  box-sizing: border-box;
  background: #fff;
  border-radius: 50%;
  overflow: hidden;
  transition: all 1s;
  position: relative;
}
.swiper-wrapper .swiper-slide1 .launch-screen .logo img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
}
.swiper-wrapper .swiper-slide1 .launch-screen .text {
  margin-left: 20px;
  font-size: 24px;
  color: #fff;
  font-weight: bold;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.swiper-wrapper .swiper-slide1 .launch-screen .text .subtitle {
  font-size: 14px;
  color: #fff;
  font-weight: normal;
  text-align: center;
  margin-top: 2px;
}
.swiper-wrapper .swiper-slide2 {
  background-color: #fff;
}
.swiper-wrapper .swiper-slide2 .home {
  width: 100%;
  height: 100%;
}
.swiper-wrapper .swiper-slide2 .home .bg {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  object-fit: cover;
  transform: scale(1.3);
}
.swiper-wrapper .swiper-slide2 .home .slogan1 {
  position: absolute;
  z-index: 9;
  top: 60px;
  left: 15px;
  display: flex;
  align-items: center;
}
.swiper-wrapper .swiper-slide2 .home .slogan1 div {
  writing-mode: vertical-lr;
  font-size: 20px;
  color: #fff;
  width: 30px;
  letter-spacing: 2px;
}
.swiper-wrapper .swiper-slide2 .home .slogan2 {
  position: absolute;
  bottom: 1.5rem;
  right: 30px;
  color: #fff;
  font-weight: bold;
  font-size: 25px;
  line-height: 35px;
  letter-spacing: 2px;
}
.topbar {
  position: fixed;
  z-index: 9999;
  top: 0;
  left: 0;
  width: 100vw;
  height: 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.topbar .logo {
  width: 30px;
  height: 30px;
  margin-left: 20px;
}
.topbar .btn {
  width: 30px;
  height: 30px;
  margin-right: 20px;
}
.menu {
  position: fixed;
  width: 100vw;
  bottom: 0;
  background-color: #fff;
  top: 0;
  left: 100%;
  z-index: 998;
  overflow: auto;
  padding: 60px 0;
  display: flex;
  flex-direction: column;
  align-content: center;
  transition: all 0.5s;
  overflow-y: scroll;
}
.menu .item {
  padding: 0.4rem 0;
  font-size: 0.4rem;
  text-align: center;
  background-color: #fff;
  position: relative;
}
.menu .item span {
  position: relative;
  z-index: 2;
  transition: all 0.5s;
}
.menu .item .active {
  position: absolute;
  z-index: 0;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-color: var(--primary-color);
  color: #fff;
  max-width: 0;
  transition: all 0.5s;
}