body {
  margin: 0;
  padding: 0;
  font-family: "Microsoft Yahei";
}

* {
  box-sizing: border-box;
}

a,
a:hover,
a:active,
a:visited,
a:link,
a:focus {
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  -webkit-tap-highlight-color: transparent;
  outline: none;
  /* background: none; */
  text-decoration: none;
  -webkit-user-select: none;
  -moz-user-focus: none;
  -moz-user-select: none;
}

.flex {
  display: flex;
}

.flex-bettwen {
  display: flex;
  justify-content: space-between;
}

.flex-bettwen-center {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.w {
  width: 1200px;
  margin: 0 auto;
}

.f16 {
  font-size: 16px;
  color: #6B6B6B;
  padding: 10px 24px;
}

.f24 {
  font-size: 24px;
  color: #1F1F1F;
  margin-bottom: 24px;
}

.f16:hover {
  color: #F43F3F;
  background: #F7F5F5;
  border-radius: 12px;

}

/*- banner -*/
.banner-box {
  width: 100%;
  height: 680px;
  color: #ffffff;
  background: url("../../images/banner.jpg") center no-repeat;
  background-size: 1920px;
  overflow: hidden;
  position: relative;
  z-index: 1;
}

.banner-content {
  height: 950px;
  width: 1200px;
  margin: auto;
  position: relative;
}

.banner-content .banner_bottom {
  width: 100%;
  height: 140px;
  background: #FFFFFF;
  box-shadow: 0px 4px 12px 0px #E6E6E6;
  border-radius: 4px;
  display: flex;
  align-items: center;
  padding: 0 70px;
  justify-content: space-between;
}

.banner-content .title {
  position: absolute;
  top: 160px;
  font-size: 50px;
  font-weight: bold;
  color: #ffffff;
}

.banner-content p {
  position: absolute;
  top: 250px;
  font-size: 18px;
  color: #ffffff;
}

.banner-content .btn {
  position: absolute;
  top: 350px;
  width: 200px;
  height: 54px;
  background: #F43F3F;
  border-radius: 4px;
  text-align: center;
  line-height: 54px;
  font-size: 18px;
  color: #ffffff;
  text-decoration: none;
}

.banner-content .btn:hover {
  background: #e73434;
}

.banner-menu-block {
  position: relative;
  top: -32px;
  background: #fff;
  z-index: 999;
  box-shadow: 0px 5px 20px 0px rgba(50, 49, 94, 0.15);
  border-radius: 4px;
}

.clearfix:before,
.clearfix:after {
  display: block;
  line-height: 0;
  content: "";
}

.clearfix:after {
  clear: both;
}

.banner-menu-block .banner-menu-item {
  float: left;
  height: 155px;
  font-size: 0;
  padding: 44px 0 0 80px;
}

.banner-menu-block .banner-menu-item .banner-menu-icon {
  display: inline-block;
  width: 60px;
  height: 60px;
  background-size: 60px;
}

.banner-menu-block .banner-menu-item .icon-1 {
  background-image: url(../../images/icon1.png);
}

.banner-menu-block .banner-menu-item .icon-2 {
  background-image: url(../../images/icon2.png);
}

.banner-menu-block .banner-menu-item .icon-3 {
  background-image: url(../../images/icon3.png);
}

.banner-menu-block .banner-menu-item .text-block {
  display: inline-block;
  margin-left: 30px;
  width: 196px;
  vertical-align: top;
  white-space: nowrap;
}

.banner-menu-block .banner-menu-item .title {
  font-size: 22px;
  font-weight: bold;
  line-height: 24px;
}

.banner-menu-block .banner-menu-item p {
  font-size: 16px;
  color: #8f8f8f;
  margin-top: 10px;
  line-height: 24px;
}

.architecture-block {
  margin: 34px auto 80px;
}

.image_text {
  margin-top: 80px;
  margin-left: 34px;
}

.image_text-image1 {
  margin-left: 140px;
  width: 650px;
  height: 347px;
  background: url("../../images/pic1.png");
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.image_text-image2 {
  margin-right: 140px;
  width: 650px;
  height: 347px;
  background: url("../../images/pic2.png");
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.image_text-image3 {
  margin-left: 140px;
  width: 650px;
  height: 347px;
  background: url("../../images/pic3.png");
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

/* .image_text-text .image_text-btn {
  width: 168px;
  height: 48px;
  background: #FFFFFF;
  border: 1px solid #F43F3F;
  border-radius: 12px;
  color: #F43F3F;
  font-size: 14px;
  line-height: 48px;
  text-align: center;
  margin-top: 24px;
  margin-left: 24px;
} */

.image_text-text .image_text-btn {
  display: block;
  width: 168px;
  height: 48px;
  background: #FFFFFF;
  border: 1px solid #F43F3F;
  border-radius: 12px;
  color: #F43F3F;
  font-size: 14px;
  line-height: 48px;
  text-align: center;
  margin-top: 24px;
  margin-left: 24px;
}

.image_text-text .image_text-btn:hover {
  background: #F43F3F;
  color: #fff;
  cursor: pointer;
}

.architecture-block h3 {
  font-size: 34px;
  color: #1F1F1F;
  text-align: center;
}

.architecture-block p {
  margin-top: 16px;
  font-size: 16px;
  color: #1F1F1F;
  text-align: center;
}

.practice-box {
  width: 100%;
  height: 930px;
  background: #F2F4FC;
  padding: 56px 0;
}

.practice-box-img-up {
  margin-top: 60px;
  margin-bottom: 20px;
}

.practice-img {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  opacity: 0.8;
}

.practice-img:hover {
  opacity: 0.4;
}

.practice-imgbox_big {
  display: block;
  width: 590px;
  height: 310px;
  background: #000000;
  border-radius: 12px;
  position: relative;
}

.practice-imgbox_small {
  display: block;
  width: 387px;
  height: 310px;
  background: #000000;
  border-radius: 12px;
  position: relative;
}

.demonstration-box {
  width: 100%;
  height: 320px;
  background: url("../../images/bg.jpg");
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.f34 {
  font-size: 34px;
  color: #1F1F1F;
  margin-bottom: 20px;
}

.f18 {
  font-size: 18px;
  color: #1F1F1F;
  margin-bottom: 36px;
}

.demonstration-content {
  height: 100%;
  padding: 0 140px;
}

.practice-imgbox-info {
  position: absolute;
  left: 30px;
  bottom: 40px;
  color: #fff;
  font-size: 16px;
}

.practice-imgbox-info-up {
  font-size: 20px;
  font-weight: bold;
  margin-bottom: 15px;
}

.demonstration-box-btn {
  display: block;
  width: 168px;
  height: 48px;
  padding: 0 27px;
  font-size: 14px;
  line-height: 48px;
  background: #F43F3F !important;
  color: #fff;
  border: 1px solid #F43F3F;
  border-radius: 4px;
  position: relative;
}

.demonstration-box-btn:hover {
  background: #e73434 !important;
}

.demonstration-box-btn::after {
  position: absolute;
  content: '';
  display: block;
  background: url("../../images/right-arrow.png");
  background-size: 100% 100%;
  background-repeat: repeat;
  width: 17px;
  height: 17px;
  right: 29px;
  top: 50%;
  transform: translateY(-50%);
}

@keyframes leftroll {
  from {
    background-position-x: 0;
  }

  to {
    background-position-x: -1920px;
  }
}

@keyframes rightroll {
  from {
    background-position-x: -1920px;
  }

  to {
    background-position-x: 0;
  }
}