body {
  font-family: 'Helvetica Neue', Helvetica, Arial, 'Microsoft Yahei', 'Hiragino Sans GB', 'Heiti SC', 'WenQuanYi Micro Hei', sans-serif;
}
* {
  margin: 0;
  padding: 0;
  --primary-color: #e7141a;
  --sidebar-width: 120px;
}
.bg {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  object-fit: cover;
  transform: scale(1.2);
}
.launch-screen {
  position: fixed;
  width: 100%;
  height: 100%;
  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;
}
.launch-screen .largeLogo img {
  width: 400px;
}
.launch-screen .text {
  margin-left: 20px;
  font-size: 0.14rem;
  letter-spacing: 0.02rem;
  color: #fff;
  font-weight: bold;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.launch-screen .text .subtitle {
  font-size: 16px;
  color: #fff;
  text-align: center;
  margin-top: 5px;
}
.swiper-wrapper {
  height: 100vh;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.swiper-wrapper .swiper-slide {
  width: 100%;
  height: 100%;
  position: relative;
  background: transparent;
}
.swiper-wrapper .swiper-slide1 .home-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #fff;
  transition: 1.3s;
}
.swiper-wrapper .swiper-slide1 .home {
  position: absolute;
  top: 0;
  left: 0%;
  width: calc(100% - var(--sidebar-width));
  height: 100%;
  background: transparent;
  margin-left: var(--sidebar-width);
  box-sizing: border-box;
}
.swiper-wrapper .swiper-slide1 .home .slogan1 {
  position: absolute;
  z-index: 9;
  top: 50px;
  right: 0.3rem;
}
.swiper-wrapper .swiper-slide1 .home .slogan1 div {
  font-size: 0.12rem;
  color: #fff;
  letter-spacing: 0.02rem;
  line-height: 0.2rem;
}
.swiper-wrapper .swiper-slide1 .home .slogan2 {
  position: absolute;
  bottom: 0.3rem;
  left: 0.3rem;
  color: #fff;
  font-size: 0.12rem;
  letter-spacing: 0.01rem;
  line-height: 0.2rem;
}
.scroll-tip-text {
  position: absolute;
  z-index: 999;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.05rem;
  color: rgba(255, 255, 255, 0.6);
}
.scroll-tip {
  position: absolute;
  z-index: 999;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  height: 50px;
  width: 35px;
  border: 1px solid #fff;
  border-radius: 30px;
}
.scroll-tip::after {
  position: absolute;
  content: '';
  width: 2px;
  height: 15px;
  background-color: rgba(255, 255, 255, 0.4);
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}
.scroll-tip .dot {
  position: relative;
  width: 10px;
  height: 10px;
  background-color: #fff;
  border-radius: 50%;
  left: 50%;
  transform: translateX(-50%);
  animation: mouse-dot 3s infinite;
}
@keyframes mouse-dot {
  0% {
    top: 0;
    opacity: 0;
  }
  50% {
    top: 60%;
    opacity: 1;
  }
  100% {
    top: 60%;
    opacity: 0;
  }
}