* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
  /* scrollbar-width: none; */
  /* -ms-overflow-style: none; */
}

body {
  background: #f5f5f5;
  overflow: hidden;
  height: 100vh;
  /* 隐藏滚动条 */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

body::-webkit-scrollbar {
  display: none;
}

/* ===== 顶部导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1400px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  font-size: 24px;
  font-weight: bold;
  color: #333;
}

.logo img {
  width: 191px;
}

.nav-links {
  display: flex;
  gap: 84px;
}

.nav-links a {
  text-decoration: none;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 14px;
  color: #1b1b1b;
  line-height: 30px;
  text-align: left;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: #8f6cff;
}

.nav-links a.active {
  color: #8f6cff;
  font-weight: 500;
}

.down-arrow-box {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  z-index: 100;
}

.icon_mouse {
  width: 30px;
}

.icon_down {
  width: 16px;
  margin-top: 7px;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0) translateX(-50%);
  }
  40% {
    transform: translateY(-20px) translateX(-50%);
  }
  60% {
    transform: translateY(-10px) translateX(-50%);
  }
}

.swiper {
  width: 100%;
  height: 100vh;
}

.swiper-slide {
  height: 100vh;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.section {
  height: 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

/* ===== 第一屏：主视觉 ===== */
.section-1 {
  background: url("./imgs/section1-bg.jpg") no-repeat center center;
  background-size: cover;
}

/* ===== 第二屏：关于我们 ===== */
.section-2 {
  background: url("./imgs/bg.jpg") no-repeat center center;
  background-size: cover;
}

.section-2-content {
  width: 1400px;
}

.about-text {
  width: 766px;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 24px;
  color: #1b1b1b;
  line-height: 50px;
  text-align: left;
}

.about-text .about-title {
  font-size: 40px;
  line-height: 58px;
  letter-spacing: 2px;
}

.about-text p {
  margin-top: 48px;
  padding-left: 26px;
}

.about-phone {
  position: absolute;
  bottom: 0;
  right: 0;
  width: calc(965px / 1920px * 100vw);
}

/* ===== 第三屏：我们的优势 ===== */
.section-3 {
  background: url("./imgs/section3-bg.jpg") no-repeat center center;
  background-size: cover;
}

.advantages-content {
  width: 1480px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.advantages-content .advantages-title {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 40px;
  color: #1b1b1b;
  line-height: 58px;
  letter-spacing: 2px;
}

.advantages-grid {
  margin-top: 70px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.advantage-card {
  width: 480px;
  height: 333px;
  padding: 43px 35px;
  background: rgba(255, 255, 255, 0.5);
  box-shadow:
    4px 4px 20px 0px rgba(171, 106, 253, 0.01),
    inset 0px -8px 0px 0px rgba(197, 185, 241, 0.5);
  border-radius: 20px;
  transition: transform 0.3s ease;
}

.advantage-card:hover {
  transform: translateY(-10px);
}

.advantage-card h3 {
  font-family: AlibabaPuHuiTi_3_105_Heavy;
  font-size: 24px;
  color: #1b1b1b;
  line-height: 33px;
  text-align: left;
  font-style: normal;
}

.advantage-card p {
  margin-top: 23px;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 24px;
  color: #555555;
  line-height: 35px;
  text-align: left;
}

/* ===== 第四屏：线上应用 ===== */
.section-4 {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: url("./imgs/bg.jpg") no-repeat center center;
  background-size: cover;
}

.apps-content {
  margin-top: calc(100px / 1080px * 100vh);
  width: 1536px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: center;
}

.apps-content .apps-title {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 40px;
  color: #1b1b1b;
  line-height: 58px;
  letter-spacing: 2px;
  text-align: left;
}

.app-card {
  height: calc(638px / 1080px * 100vh);
  transition: transform 0.3s ease;
}

.app-card:hover {
  transform: translateY(-10px);
}

.app-card img {
  width: 100%;
  height: 550px;
  object-fit: cover;
}

/* ===== 底部 ===== */
.footer {
  width: 100%;
  height: 280px;
  display: flex;
  align-items: center;
  flex-direction: column;
  justify-content: space-between;
  background: #1b1b1b;
  color: #ffffff;
  text-align: center;
  padding: 30px 0 22px;
}

.footer-content {
  width: 886px;
  display: flex;
  align-items: flex-start;
}

.footer-item-title {
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 500;
  font-size: 16px;
  color: #ffffff;
  line-height: 24px;
  text-align: left;
}

.wechat-mp {
  width: 80px;
  flex-shrink: 0;
}

.wechat-mp-title {
  margin-top: 20px;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 14px;
  color: #ffffff;
  line-height: 20px;
  text-align: left;
}

.wechat-mp-img {
  margin-top: 22px;
  width: 78px;
}

.contact-us {
  margin-left: 260px;
}

.contact-us-content {
  display: flex;
}

.contact-us-text {
  margin-top: 20px;
  width: 300px;
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 14px;
  color: #ffffff;
  line-height: 20px;
  text-align: left;
}

.footer-copyright {
  text-decoration: none;
  margin-top: calc(47px / 1080px * 100vh);
  font-family: SourceHanSansCN, SourceHanSansCN;
  font-weight: 400;
  font-size: 12px;
  color: #ffffff;
  line-height: 17px;
}

.footer-copyright:hover {
  color: #8f6cff;
}