/* 首页专属样式。Figma 1920 版心 1520px = 95rem。禁止写 max-width 媒体查询。 */

body.home .section {
  width: 95rem;
  max-width: 95rem;
}

.home-section-title {
  margin: 0;
  font-family: s-semibold, sans-serif;
  font-size: 3.125rem;
  line-height: 4.125rem;
  color: #292929;
}
.home-section-desc {
  margin: 0;
  font-family: s-regular, sans-serif;
  font-size: 1.5rem;
  line-height: 2rem;
  color: #5d5e62;
}
.home-block-title {
  margin: 0;
  white-space: nowrap;
  font-family: s-semibold, sans-serif;
  font-size: 2.5rem;
  line-height: 3.3125rem;
  color: #292929;
}

#principle,
#follow-objects,
#scenarios,
#uwb-principle,
#business,
#core-tech,
#contact {
  scroll-margin-top: 5rem;
}

/* 双入口卡片 */
.home-intro {
  padding: 5rem 0;
}
.home-intro-grid {
  display: flex;
  justify-content: space-between;
}
.home-intro-card {
  width: 46.25rem;
  height: 45rem;
  overflow: hidden;
  border-radius: 1.125rem;
  background: #f5f5f7;
}
.home-intro-cover {
  width: 46.25rem;
  height: 25rem;
  overflow: hidden;
  border-radius: 1.125rem 1.125rem 0 0;
}
.home-intro-cover img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}
.home-intro-title {
  margin: 3.25rem 0 0 3.75rem;
  font-family: s-semibold, sans-serif;
  font-size: 2.5rem;
  line-height: 3.3125rem;
  color: #292929;
}
.home-intro-desc {
  width: 34rem;
  margin: 0.4375rem 0 0 3.75rem;
  font-family: s-regular, sans-serif;
  font-size: 1.75rem;
  line-height: 2.3125rem;
  color: #5d5e62;
}
.home-intro-card:first-child .home-intro-desc {
  width: 34rem;
}
.home-intro-card:last-child .home-intro-desc {
  width: 31.25rem;
}
.home-intro-btn {
  width: 9.5rem;
  height: 2.5rem;
  margin: 2.125rem 0 0 3.75rem;
  border-radius: 0.5rem;
  font-family: s-demibold, sans-serif;
  font-size: 1.125rem;
  line-height: 1.5rem;
}

/* 测向原理 */
.home-principle {
  padding: 4.4375rem 0 5rem;
  background: #f5f5f7;
}
.home-principle-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 95rem;
  height: 28.75rem;
  margin-top: 2.5rem;
  padding: 0 6.25rem 0 3.75rem;
  border-radius: 1.25rem;
  background: #fff;
}
.home-principle-text {
  width: 29.375rem;
}
.home-principle-desc {
  width: 29.375rem;
  margin: 1.0625rem 0 0;
  font-family: s-regular, sans-serif;
  font-size: 1.5rem;
  line-height: 2rem;
  color: #5d5e62;
}
.home-principle-img {
  width: 39.6875rem;
  height: 18.125rem;
  object-fit: contain;
}

/* 跟随对象 */
.home-follow {
  padding: 5rem 0;
}
.home-follow-card {
  position: relative;
  width: 95rem;
  height: 31.25rem;
  overflow: hidden;
  border-radius: 1.25rem;
  background: #f5f5f7;
}
.home-follow-text {
  position: absolute;
  left: 3.75rem;
  top: 5.6875rem;
}
.home-follow-lead {
  margin: 1.9375rem 0 0;
  font-family: s-semibold, sans-serif;
  font-size: 2.5rem;
  line-height: 3.3125rem;
  color: #292929;
}
.home-follow-desc {
  margin: 0.875rem 0 0;
  font-family: s-regular, sans-serif;
  font-size: 1.5rem;
  line-height: 2rem;
  color: #5d5e62;
}
.home-follow-item {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.home-follow-tag {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 6.875rem;
  height: 2.5rem;
  border-radius: 3.125rem;
  background: rgba(0, 125, 221, 0.12);
  font-family: s-demibold, sans-serif;
  font-size: 1.125rem;
  line-height: 1.5rem;
  color: #0482ff;
}
.home-follow-item img {
  max-width: none;
  object-fit: contain;
}
.home-follow-item--watch {
  left: 48rem;
  top: 9.875rem;
  width: 7.8125rem;
}
.home-follow-item--watch img {
  width: 7.8125rem;
  height: 17.625rem;
  margin-top: 1.25rem;
}
.home-follow-item--tag {
  left: 62.4375rem;
  top: 9.125rem;
  width: 8.6875rem;
}
.home-follow-item--tag img {
  width: 8.6875rem;
  height: 18.375rem;
  margin-top: 1.25rem;
}
.home-follow-item--phone {
  left: 77.75rem;
  top: 3.1875rem;
  width: 9.6875rem;
}
.home-follow-item--phone img {
  width: 9.6875rem;
  height: 24.3125rem;
  margin-top: 1.25rem;
}

/* 应用场景 */
.home-scenarios {
  padding: 4.4375rem 0 5rem;
  background: #f5f5f7;
}
.home-scenarios-head {
  width: 47.5rem;
}
.home-scenarios-head .home-section-desc {
  margin-top: 0.75rem;
}
.home-scenarios-grid {
  display: flex;
  justify-content: space-between;
  margin-top: 2.8125rem;
}
.home-scene-card {
  width: 30rem;
  height: 38.3125rem;
  overflow: hidden;
  border-radius: 0.875rem;
  background: #fff;
}
.home-scene-cover {
  width: 30rem;
  height: 21.25rem;
  overflow: hidden;
  border-radius: 0.875rem 0.875rem 0 0;
}
.home-scene-cover img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}
.home-scene-title {
  margin: 3.3125rem 0 0 2.5rem;
  font-family: s-demibold, sans-serif;
  font-size: 2.125rem;
  line-height: 2.8125rem;
  color: #1c1c1c;
}
.home-scene-desc {
  width: 25rem;
  margin: 1.125rem 0 0 2.5rem;
  font-family: s-regular, sans-serif;
  font-size: 1.625rem;
  line-height: 2.125rem;
  color: #5d5e62;
}

/* 车用 UWB 原理 */
.home-uwb {
  padding: 0 0 4.375rem;
}
.home-uwb-head {
  width: 50.8125rem;
  padding-top: 4.375rem;
}
.home-uwb-head .home-section-title {
  color: #1c1c1c;
}
.home-uwb-head .home-section-desc {
  margin-top: 0.4375rem;
}
.home-uwb-grid {
  display: flex;
  justify-content: space-between;
  margin-top: 2.8125rem;
}
.home-uwb-card {
  width: 46.25rem;
  height: 44.3125rem;
  overflow: hidden;
  border-radius: 1.125rem;
  background: #f5f5f7;
}
.home-uwb-cover {
  width: 46.25rem;
  height: 26.25rem;
  overflow: hidden;
  border-radius: 1.125rem 1.125rem 0 0;
}
.home-uwb-cover img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}
.home-uwb-title {
  margin: 3.375rem 0 0 3.75rem;
  font-family: s-semibold, sans-serif;
  font-size: 2.125rem;
  line-height: 2.8125rem;
  color: #1c1c1c;
}
.home-uwb-card:first-child .home-uwb-title {
  margin-left: 4.125rem;
}
.home-uwb-desc {
  width: 40.75rem;
  margin: 1.125rem 0 0 3.75rem;
  font-family: s-regular, sans-serif;
  font-size: 1.375rem;
  line-height: 1.8125rem;
  color: #52535b;
  opacity: 0.9;
}
.home-uwb-desc--single {
  width: auto;
  font-size: 1.5rem;
  line-height: 2rem;
  opacity: 1;
}

/* 主营业务 */
.home-business {
  padding: 4.5rem 0 5.5rem;
  background: #f5f5f7;
}
.home-business-head {
  width: 55.625rem;
}
.home-business-head .home-section-title {
  color: #1c1c1c;
}
.home-business-head .home-section-desc {
  margin-top: 0.4375rem;
}
.home-business-grid {
  display: flex;
  justify-content: space-between;
  margin-top: 2.9375rem;
}
.home-business-card {
  position: relative;
  width: 30rem;
  height: 31.25rem;
  overflow: hidden;
  border-radius: 0.875rem;
}
.home-business-card img {
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
}
.home-business-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(8, 16, 39, 0) 54.33%, rgba(8, 16, 39, 0.6) 100%);
}
.home-business-copy {
  position: absolute;
  left: 2.5rem;
  right: 2.5rem;
  bottom: 3.0625rem;
}
.home-business-title {
  margin: 0;
  font-family: s-semibold, sans-serif;
  font-size: 1.875rem;
  line-height: 2.5rem;
  color: #fff;
}
.home-business-desc {
  width: 25rem;
  margin: 0.6875rem 0 0;
  font-family: s-regular, sans-serif;
  font-size: 1.25rem;
  line-height: 1.6875rem;
  color: rgba(255, 255, 255, 0.8);
}
.home-business-desc--solid {
  color: #fff;
}

/* 核心技术 */
.home-tech {
  padding: 5.4375rem 0 4.9375rem;
}
.home-tech-head .home-section-title {
  color: #1c1c1c;
}
.home-tech-head .home-section-desc {
  margin-top: 0.4375rem;
}
.home-tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-top: 2.8125rem;
}
.home-tech-card {
  width: 30rem;
  height: 16.25rem;
  padding: 2.125rem 0 0 2.5rem;
  border-radius: 0.875rem;
  background: #f5f5f7;
}
.home-tech-grid .home-tech-card:nth-child(n + 4) {
  padding-top: 2.75rem;
}
.home-tech-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4.375rem;
  height: 4.375rem;
  border-radius: 50%;
  background: #fff;
  overflow: hidden;
}
.home-tech-icon img {
  width: 100%;
  height: auto;
}
.home-tech-title {
  margin: 1.8125rem 0 0;
  font-family: s-semibold, sans-serif;
  font-size: 1.875rem;
  line-height: 2.5rem;
  color: #1c1c1c;
}
.home-tech-grid .home-tech-card:nth-child(n + 4) .home-tech-title {
  margin-top: 1.1875rem;
}
.home-tech-desc {
  margin: 0.625rem 0 0;
  font-family: s-regular, sans-serif;
  font-size: 1.25rem;
  line-height: 1.6875rem;
  color: #5d5e62;
}