:root {
  --text-color: #242946;
  --sub-text-color: #666d94;
  --border-color: #e5e7eb;
  --dot-color: #3d53c9;
  --regular-font-family: AlibabaPuHuiTi Regular, AlibabaPuHuiTi Regular;
  --medium-font-family: AlibabaPuHuiTi Medium, AlibabaPuHuiTi Medium;
}
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Montserrat Light",
    "AlibabaPuHuiTi";
}
main {
  position: relative;
}

.main-centered {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.main-centered section {
  width: 100%;
}

.chroma-background {
  background: linear-gradient(
    0deg,
    #340b05,
    #0358f7 18.27%,
    #5092c7 28.37%,
    #e1e1fe 41.35%,
    #ffd400 58.66%,
    #fa3d1d 68.27%,
    #fd02f5 73.08%,
    transparent
  );
  filter: blur(5px);
  @media (min-width: 800px) {
    filter: blur(9px);
  }
}

.chroma-text {
  background-image: linear-gradient(
    90deg,
    #000000 0,
    #000000 33.33%,
    #c679c4 40%,
    #fa3d1d 45%,
    #ffb005 50%,
    #e1e1fe 55%,
    #0358f7 60%,
    transparent 66.67%,
    transparent
  );
  background-size: 300% 100%;
  background-position: 100% 0;
  will-change: background-position;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-fill-color: transparent;
  color: transparent;
}

.chroma-text-animate {
  animation: chroma-sweep 0.9s ease-in-out 0.1s forwards;
  filter: blur(1px);
}

@keyframes chroma-sweep {
  0% {
    background-position: 100% 0;
    filter: blur(1px);
  }

  to {
    background-position: 0 0;
    filter: blur(0px);
    text-fill-color: initial;
    -webkit-text-fill-color: initial;
  }
}

.header {
  text-align: center;
  padding-top: 210px;
  position: relative;
  height: 100vh;
}

.header-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.logo-img {
  width: 212px;
  height: 56px;
  margin-bottom: 22px;
}

.subtitle,
.footer-subtitle,
.footer-contact-item-text {
  color: var(--text-color);
  font-size: 32px;
  font-family: Montserrat Light, Montserrat Light;
}

.logo-container,
.footer-logo-container {
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero {
  text-align: center;
  padding-top: 142px;
}

.hero .hero-title {
  font-size: 90px;
  font-family: var(--regular-font-family);
  font-weight: 400;
  margin-bottom: 12px;
  line-height: 1.2;
  letter-spacing: 2px;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  color: var(--text-color);
}

.hero-desc {
  color: var(--sub-text-color);
  font-size: 28px;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  font-family: var(--regular-font-family);
}

.video-container {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
  object-fit: fill;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  overflow: hidden;
}
.video-container video {
  width: 100%;
  height: 100%;
  object-fit: fill;
}

.expert-brain,
.execution-system {
  margin-top: 152px;
}
.section-title-container {
  position: relative;
}
section .section-title {
  font-size: 68px;
  margin: 0 0 27px 0;
  letter-spacing: 1px;
  text-align: left;
  font-family: var(--regular-font-family);
  position: relative;
  z-index: 4;
}
section .section-sub-title {
  margin: 0 0 22px 0;
  text-align: left;
  color: var(--text-color);
  font-size: 68px;
  font-family: var(--regular-font-family);
}
.ai-highlight {
  background: url(../images/text-color.png) no-repeat;
  background-size: 100% 100%;
  position: absolute;
  bottom: 16px;
  left: -4px;
  width: 138px;
  height: 19px;
  z-index: -1;
}

.section-desc {
  color: var(--sub-text-color);
  font-size: 24px;
  margin: 0 0 72px 0;
  text-align: left;
  font-family: var(--regular-font-family);
}
.elements-title {
  display: flex;
  align-items: center;
  width: 100%;
  position: relative;
  font-size: 32px;
  z-index: 1;
  height: 78px;
  border-bottom: 1px solid var(--border-color);
  border-top: 1px solid var(--border-color);
}
.elements-title .dot {
  height: 28px;
  width: 28px;
  background: var(--dot-color);
  border-radius: 50%;
  margin-left: 208px;
}
.elements-title .dot-title {
  margin-left: 18px;
  color: var(--text-color);
  font-family: var(--medium-font-family);
}
.elements-title-text {
  display: flex;
  align-items: center;
}
.section-header {
  margin-left: 254px;
}
.elements-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  padding: 0 222px;
}
.elements-grid::after {
  content: "";
  position: absolute;
  bottom: 70px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--border-color);
}
.element-card {
  flex: 1;
  padding: 0px 18px 0px 32px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  height: 490px;
  border-left: 1px solid var(--border-color);
  position: relative;
}
.element-card::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 70px;
  background: var(--border-color);
}
.element-card:last-child {
  border-right: 1px solid var(--border-color);
}
.icon-svg {
  width: 100px;
  height: 100px;
  margin-top: 56px;
  margin-bottom: 69px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.element-title {
  margin-bottom: 16px;
  font-family: var(--medium-font-family);
  font-size: 32px;
  color: var(--dot-color);
  line-height: 44px;
  text-align: left;
  font-style: normal;
}
.element-desc {
  font-family: var(--regular-font-family);
  font-weight: 400;
  font-size: 24px;
  color: var(--sub-text-color);
  line-height: 33px;
  text-align: left;
  font-style: normal;
}
.footer {
  background: linear-gradient(90deg, #f5f7fa 0%, #e9ecf7 100%);
  text-align: center;
  height: 315px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  flex-direction: column;
  padding: 0 228px;
}
.footer-container,
.footer-copyright {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.footer-contact-item {
  display: flex;
  align-items: center;
  margin-top: 11px;
}
.footer-contact-item-text {
  margin-left: 12px;
  font-size: 18px;
  color: var(--sub-text-color);
  font-family: var(--regular-font-family);
  letter-spacing: 1px;
}
.footer-contact-item-text-phone {
  letter-spacing: 1.5px;
}
.footer-contact-item-icon {
  width: 24px;
  height: 24px;
}

.footer-subtitle {
  margin-bottom: 6px;
}
.copyright {
  color: var(--sub-text-color);
  font-size: 18px;
}
@media (max-width: 2560px) and (min-width: 1920px) {
  .header {
    padding-top: 400px;
  }
}

@media (max-width: 1440px) {
  .header {
    padding-top: 156px;
  }
  .logo-img {
    width: 180px;
    height: 47px;
    margin-bottom: 20px;
  }
  .subtitle,
  .footer-subtitle {
    font-size: 24px;
  }
  .hero {
    padding-top: 107px;
  }
  .hero .hero-title {
    font-size: 76px;
    margin-bottom: 20px;
  }

  .hero-desc {
    font-size: 24px;
  }
  section .section-title {
    font-size: 60px;
    margin-bottom: 0px;
  }
  section .section-sub-title {
    font-size: 60px;
    margin-bottom: 20px;
  }
  section .section-desc {
    margin-bottom: 60px;
    font-size: 20px;
  }

  .elements-title {
    height: 69px;
  }
  .elements-title .dot {
    width: 26px;
    height: 26px;
    margin-left: 157px;
  }
  .elements-title .dot-title {
    font-size: 28px;
    margin-left: 12px;
  }
  .element-card {
    height: 430px;
    padding: 0px 0px 0px 24px;
  }
  .element-desc {
    font-size: 18px;
  }
  .elements-grid {
    padding: 0 170px;
  }
  .section-header {
    margin-left: 195px;
  }
  .element-title {
    font-size: 28px;
    margin-bottom: 16px;
  }
  .icon-svg {
    width: 80px;
    height: 80px;
    margin-top: 53px;
    margin-bottom: 62px;
  }
  .footer {
    padding: 0 170px;
  }
  .expert-brain,
  .execution-system {
    margin-top: 112px;
  }
}