body {
  font-family: Microsoft YaHei;
}
img {
  max-width: 100%;
}
.carousel-caption {
  z-index: 10;
  top: 35%;
}
.logo {
  height: 100px;
}
.logo img {
  height: 60px;
  width: auto;
}
.carousel-item {
  height: 100vh;
  min-height: 800px;
}
.carousel-item > img {
  position: absolute;
  top: 0;
  left: 0;
  min-width: 100%;
  height: 100vh;
  min-height: 800px;
}
.carousel-item .title {
  font-size: 85px;
  margin-bottom: 55px;
}
.carousel-item .decs {
  font-size: 31px;
  margin-bottom: 98px;
}
.carousel-item button {
  width: 160px;
  height: 60px;
  font-size: 26px;
}
.navbar,
#navbar {
  height: 100px;
  padding: 0;
  background: rgba(0, 0, 0, 0.74);
}
.navbar .navbar-nav a {
  font-size: large;
  cursor: pointer;
  font-size: 14px;
}
.btn {
  font-size: 15px;
}
.top {
  cursor: pointer;
  border-radius: 50%;
  position: fixed;
  bottom: 20px;
  right: 20px;
  padding: 8px;
  background: #fff;
  box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
}
.section h1.title {
  font-size: 34px;
}
.section h1 + .desc {
  font-size: 13px;
}
.section.scenario .row > div {
  margin-bottom: 78px;
}
.section.scenario .row .title,
.section.platform .row .title {
  font-size: 20px;
  font-weight: bold;
  color: #333333;
  margin: 34px;
}
.section.scenario .row .desc,
.section.platform .row .desc {
  font-size: 16px;
  font-weight: 400;
  color: #333333;
}
.section.scenario h1 + .desc {
  font-size: 13px;
}

.section.advantages .row > div {
  margin-bottom: 78px;
}
.section.advantages .row .title {
  font-size: 34px;
  font-weight: bold;
  color: #333333;
  line-height: 40px;
}
.section.advantages .row .desc {
  margin-left: 7rem;
}
.section.advantages .row .text {
  font-size: 20px;
  font-weight: 400;
  color: #333333;
}
.section.advantages div .index-icon {
  font-size: 120px;
  line-height: 36px;
  font-weight: bold;
  color: rgba(24, 144, 255, 0.5);
  user-select: none;
  z-index: -1;
}
.section.custom .desc p {
  color: #fff;
  margin-bottom: 0.3rem;
}
.section.custom input {
  background: #383b3d;
  border: none;
  color: #fff;
}
.section.platform .row .title {
  margin: 24px;
}
.section.about .text {
  font-size: 14px;
  color: #333333;
  line-height: 28px;
}
.section.industry .row > div {
  height: 500px;
  font-size: 24px;
  color: #fff;
  text-align: left;
}
.font-13 {
  font-size: 13px;
}
.font-34 {
  font-size: 34px;
}

.features .header {
  font-size: 20px;
  color: #666;
}

.features .header > div {
  border-bottom: 2px solid #b5b5b5;
  padding: 10px;
  cursor: pointer;
}
.features .header .active {
  color: #1890ff;
  border-bottom: 2px solid #1890ff;
}
.features .header .active {
  color: #1890ff;
  border-bottom: 2px solid #1890ff;
}
.features .con .con-div {
  display: none;
  padding: 15px;
  font-size: 20px;
  color: #666;
}
.features .con .con-div.active {
  display: block;
}
@keyframes bg {
  0% {
    background: rgba(0, 0, 0, 0.3);
    background-size: 100%;
  }
  100% {
    background: rgba(0, 0, 0, 0.1);
    background-size: 110%;
  }
}
@keyframes bgSize {
  0% {
    background-size: 102%;
    background-position: center;
  }
  100% {
    background-size: 110%;
    background-position: center;
  }
}
.industry .item-div {
  background-size: 100%;
  background-position: center;
}
.industry .item {
  background: rgba(0, 0, 0, 0.3);
  height: 100%;
}
.industry .item:hover {
  animation: bg 0.5s;
  animation-fill-mode: forwards;
}
.industry .item-div:hover {
  animation: bgSize 0.5s;
  animation-fill-mode: forwards;
}

.footer > div {
  flex: 1;
  text-align: left;
  font-size: 13px;
}
.footer .title {
  font-size: 15px;
  font-weight: 600;
}
.footer a {
  color: #fff;
}
@media (max-width: 768px) {
  .carousel-item .title {
    font-size: 18px;
    margin-bottom: 10px;
  }
  .carousel-item .decs {
    font-size: 15px;
    margin-bottom: 98px;
  }
  .navbar {
    height: 50px;
    padding: 0;
    background: rgba(0, 0, 0, 0.74);
  }
  .logo {
    height: 50px;
  }
  .logo img {
    height: 30px;
    margin-left: 20px;
    width: auto;
  }
  .carousel-item {
    height: 20vh;
    min-height: 200px;
  }
  .carousel-caption {
    z-index: 10;
    top: 20%;
  }
}
.navbar-dark .navbar-nav .nav-link {
  color: #fff;
}
.navbar-dark .navbar-nav .nav-link:focus,
.navbar-dark .navbar-nav .nav-link:hover {
  color: #1890ff;
}
.slider {
  position: fixed;
  display: block;
  right: 10px;
  top: 44%;
  bottom: 0;
  z-index: 99;
  height: 120px;
  box-shadow: 1px 1px 5px rgba(0, 0, 0, 0.2);
}
.slider img {
  width: 180px;
}
.slider > div {
  padding: 0 10px;
  color: #1890ff;
  background: #fff;
  border-bottom: 1px solid #f4f4f4;
  cursor: pointer;
  position: relative;
  z-index: 9;
  font-size: 12px;
  height: 40px;
  line-height: 40px;
}
.slider > div:hover {
  color: #fff;
  background: #1890ff;
}

@keyframes opacity {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
.slider .qq-consultation img {
  width: 156px;
  position: absolute;
  right: 68px;
  top: -55px;
  opacity: 0;
  transform: translateX(200%);
  transition: transform 0.3s;
  z-index: 8;
  max-width: 156px;
}
.slider .qq-consultation:hover img {
  transform: translateX(0%);
  transition: transform 0.3s;
  animation: opacity 0.3s;
  animation-fill-mode: forwards;
}
.slider .phone-consultation div {
  position: absolute;
  right: 69px;
  top: 0px;
  width: 152px;
  text-align: center;
  opacity: 0;
  background: #fff;
  transform: translateX(200%);
  transition: transform 0.3s;
  padding: 10px;
  font-size: 18px;
  line-height: 18px;
  box-shadow: 1px 1px 5px rgb(0 0 0 / 20%);
  z-index: 8;
  word-wrap: no-wrap;
}
.slider .phone-consultation:hover div {
  transform: translateX(0%);
  transition: transform 0.3s;
  animation: opacity 0.3s;
  animation-fill-mode: forwards;
  color: #1890ff;
}