.index_banner {
  overflow: hidden;
}
.index_banner .swiper-slide {
  position: relative;
}
.index_banner .swiper-slide .item_picture .p_picture {
  display: block;
}
.index_banner .swiper-slide .item_picture .m_picture {
  display: none;
}
.index_banner .swiper-slide .item_explain {
  z-index: 10;
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  margin: auto;
}
.index_banner .swiper-slide .item_explain .explain_container {
  width: 72%;
  margin: auto;
  padding-top: 45px;
  text-align: center;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_title {
  font-size: 60px;
  font-weight: bold;
  color: #ffffff;
  line-height: 1em;
  letter-spacing: 3px;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_content {
  font-size: 30px;
  color: #ffffff;
  margin-top: 20px;
  -o-animation-delay: 0.2s;
  -moz-animation-delay: 0.2s;
  -webkit-animation-delay: 0.2s;
  animation-delay: 0.2s;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_desc {
  font-family: "cg";
  margin-top: 18px;
  font-size: 16px;
  line-height: 24px;
  letter-spacing: 2px;
  color: rgba(255, 255, 255, 0.25);
  -o-animation-delay: 0.4s;
  -moz-animation-delay: 0.4s;
  -webkit-animation-delay: 0.4s;
  animation-delay: 0.4s;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_link {
  margin-top: 75px;
  line-height: 45px;
  -o-animation-delay: 0.6s;
  -moz-animation-delay: 0.6s;
  -webkit-animation-delay: 0.6s;
  animation-delay: 0.6s;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_text {
  background: #fff;
  color: #555555;
  font-size: 16px;
  padding: 0 16px;
}
.index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_icon {
  width: 50px;
  color: #fff;
  font-size: 20px;
  background: #1696f4;
}
.index_banner .swiper-button {
  width: 90px;
  height: 90px;
  line-height: 90px;
  text-align: center;
  background: rgba(0, 0, 0, 0.2);
  font-size: 18px;
  color: #fff;
  -o-animation-delay: 0.5s;
  -moz-animation-delay: 0.5s;
  -webkit-animation-delay: 0.5s;
  animation-delay: 0.5s;
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_banner .swiper-button.swiper-button-prev {
  left: 0;
}
.index_banner .swiper-button.swiper-button-next {
  right: 0;
}
.index_banner .swiper-button:hover {
  background: rgba(22, 150, 244, 0.8);
}
.index_banner .swiper-pagination {
  font-size: 0;
  bottom: 45px;
  -o-animation-delay: 0.5s;
  -moz-animation-delay: 0.5s;
  -webkit-animation-delay: 0.5s;
  animation-delay: 0.5s;
}
.index_banner .swiper-pagination span {
  opacity: 1;
  width: 45px;
  height: 2px;
  margin: 0 7px;
  border-radius: 0;
  background: rgba(255, 255, 255, 0.4);
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_banner .swiper-pagination span[class*=active] {
  background: #fff;
}
.index_main .main .main_title .main_title_desc {
  font-family: "arialBold";
  font-size: 50px;
  line-height: 1em;
  color: #323232;
}
.index_main .main .main_title .main_title_text {
  font-size: 28px;
  line-height: 1em;
  color: #323232;
  font-weight: lighter;
  margin-top: 5px;
}
.index_main .main .main_more {
  width: 165px;
  height: 50px;
  line-height: 18px;
  border: solid 1px #b2b2b2;
  color: #b2b2b2;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main .main_more .main_more_text {
  font-size: 14px;
}
.index_main .main .main_more .main_more_icon {
  font-size: 18px;
  margin-left: 10px;
}
.index_main .main .main_more:hover {
  border-color: #1696f4;
  background: #1696f4;
  color: #fff;
}
.index_main .main1 {
  overflow: hidden;
  padding: 80px 0;
}
.index_main .main1 .main_left {
  width: 49.6%;
}
.index_main .main1 .main_left .line {
  width: 47px;
  height: 3px;
  margin-top: 38px;
  background: #aaaaaa;
}
.index_main .main1 .main_left .main_explain {
  font-size: 14px;
  margin-top: 32px;
  line-height: 26px;
  color: rgba(102, 102, 102, 0.85);
}
.index_main .main1 .main_left .main_left_picture {
  display: none;
}
.index_main .main1 .main_left .list {
  margin-top: 50px;
}
.index_main .main1 .main_left .list .item {
  padding: 0 35px;
  text-align: center;
  position: relative;
}
.index_main .main1 .main_left .list .item .item_num {
  letter-spacing: 1px;
  font-weight: bold;
  line-height: 1em;
  font-size: 50px;
  color: #1696f4;
}
.index_main .main1 .main_left .list .item .item_icon {
  font-size: 24px;
  line-height: 1em;
  margin-left: 3px;
  font-weight: lighter;
  color: rgba(51, 51, 51, 0.5);
}
.index_main .main1 .main_left .list .item .item_explain {
  font-size: 14px;
  margin-top: 18px;
  color: #888888;
  line-height: 22px;
}
.index_main .main1 .main_left .list .item:not(:last-child)::after {
  content: "";
  width: 1px;
  height: 40px;
  position: absolute;
  background: #e5e5e5;
  top: 20px;
  right: 0;
}
.index_main .main1 .main_left .main_more {
  margin-top: 80px;
}
.index_main .main1 .main_right {
  width: 44.6%;
}
.index_main .main2 {
  overflow: hidden;
  position: relative;
  padding: 0 0 180px;
}
.index_main .main2 #particles-js {
  position: absolute;
  height: 100%;
  width: 50%;
  right: 0;
  top: 0;
  opacity: 0.5;
}
.index_main .main2 .main_container {
  margin-top: 40px;
  position: relative;
  background: #edf1f2;
}
.index_main .main2 .main_container .main_picture {
  width: 50%;
  z-index: 11;
  height: 620px;
  overflow: hidden;
  position: relative;
}
.index_main .main2 .main_container .main_picture .picture_container {
  position: absolute;
  height: 620px;
  width: 960px;
  left: 50%;
  -o-transform: translate3d(-50%, 0, 0);
  -moz-transform: translate3d(-50%, 0, 0);
  -webkit-transform: translate3d(-50%, 0, 0);
  transform: translate3d(-50%, 0, 0);
}
.index_main .main2 .main_container .center {
  position: absolute;
  margin: auto;
  z-index: 10;
  right: 0;
  left: 0;
  top: 0;
}
.index_main .main2 .main_container .main_explain {
  width: 42.3%;
  padding-top: 135px;
}
.index_main .main2 .main_container .main_explain .explain_title {
  font-size: 40px;
  font-weight: bold;
  color: #424242;
  line-height: 1em;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.index_main .main2 .main_container .main_explain .explain_desc {
  font-family: "cgBold";
  font-size: 24px;
  line-height: 1em;
  margin-top: 15px;
  color: rgba(96, 96, 96, 0.2);
  -o-animation-delay: 0.1s;
  -moz-animation-delay: 0.1s;
  -webkit-animation-delay: 0.1s;
  animation-delay: 0.1s;
}
.index_main .main2 .main_container .main_explain .explain_content {
  font-size: 16px;
  margin-top: 30px;
  color: #666666;
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  max-height: 90px;
  min-height: 0px;
  line-height: 30px;
  -o-animation-delay: 0.2s;
  -moz-animation-delay: 0.2s;
  -webkit-animation-delay: 0.2s;
  animation-delay: 0.2s;
}
.index_main .main2 .main_container .main_explain .main_more {
  margin-top: 40px;
  -o-animation-delay: 0.3s;
  -moz-animation-delay: 0.3s;
  -webkit-animation-delay: 0.3s;
  animation-delay: 0.3s;
}
.index_main .main2 .main_nav {
  position: absolute;
  bottom: 100px;
  margin: auto;
  right: 0;
  left: 0;
  z-index: 11;
  /* .swiper-container {
                box-shadow: 0px 8px 25px 0px rgba(0, 108, 176, 0.2);
            } */
}
.index_main .main2 .main_nav .swiper-slide {
  overflow: hidden;
  padding-top: 20px;
  position: relative;
}
.index_main .main2 .main_nav .swiper-slide:not(:first-child)::after {
  content: "";
  position: absolute;
  width: 1px;
  opacity: 0.5;
  height: 120px;
  background: #52b1f5;
  margin: auto;
  bottom: 0;
  left: 0;
  top: 0;
}
.index_main .main2 .main_nav .swiper-slide:first-child .item {
  border-radius: 12px 0 0px 0px;
}
.index_main .main2 .main_nav .swiper-slide:last-child .item {
  border-radius: 0 12px 0px 0px;
}
.index_main .main2 .main_nav .swiper-slide.active .item_active,
.index_main .main2 .main_nav .swiper-slide:hover .item_active {
  bottom: 0;
  opacity: 1;
  z-index: 11;
  visibility: visible;
}
.index_main .main2 .main_nav .swiper-slide.active + .swiper-slide::after,
.index_main .main2 .main_nav .swiper-slide:hover + .swiper-slide::after {
  opacity: 0;
}
.index_main .main2 .main_nav .item {
  height: 200px;
  color: #fff;
  background: #006cb0;
}
.index_main .main2 .main_nav .item::after {
  content: "";
  position: absolute;
  margin: auto;
  bottom: 0;
  right: 0;
  left: 0;
  height: 3px;
  z-index: 10;
  background: #52b1f5;
}
.index_main .main2 .main_nav .item .item_icon {
  font-size: 54px;
  line-height: 56px;
  margin-right: 15px;
}
.index_main .main2 .main_nav .item .item_explain .explain_title {
  font-size: 20px;
  line-height: 1em;
}
.index_main .main2 .main_nav .item .item_explain .explain_desc {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1em;
  color: rgba(255, 255, 255, 0.7);
}
.index_main .main2 .main_nav .item_active {
  position: absolute;
  background: #1696f4;
  height: 220px;
  bottom: 20px;
  width: 100%;
  left: 0;
  opacity: 0;
  z-index: -1;
  visibility: hidden;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main2 .main_nav .item_active .item_icon {
  position: absolute;
  line-height: 1em;
  font-size: 96px;
  z-index: -1;
  bottom: 5px;
  right: 15px;
  color: rgba(255, 255, 255, 0.3);
}
.index_main .main2 .main_nav .item_active .item_explain {
  padding: 0 30px;
}
.index_main .main2 .main_nav .item_active .item_explain .explain_title {
  font-size: 20px;
  line-height: 1em;
  color: #ffffff;
}
.index_main .main2 .main_nav .item_active .item_explain .explain_desc {
  font-size: 14px;
  line-height: 1em;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.7);
}
.index_main .main2 .main_nav .item_active .item_explain .explain_link {
  width: 36px;
  height: 36px;
  color: #fff;
  margin-top: 40px;
  font-style: 18px;
  line-height: 34px;
  text-align: center;
  border-radius: 50%;
  border: solid 1px rgba(255, 255, 255, 0.7);
}
.index_main .main2 .main_nav_m {
  display: none;
  margin-top: 40px;
  border-bottom: 1px solid #eee;
}
.index_main .main2 .main_nav_m .swiper-slide {
  width: auto;
  padding: 0 15px;
}
.index_main .main2 .main_nav_m .swiper-slide.active .explain::after {
  background: #1696f4;
}
.index_main .main2 .main_nav_m .swiper-slide.active .explain::before {
  opacity: 1;
}
.index_main .main2 .main_nav_m .swiper-slide .explain {
  padding-bottom: 15px;
  position: relative;
  font-size: 18px;
  color: #333;
}
.index_main .main2 .main_nav_m .swiper-slide .explain::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
  height: 2px;
  width: 100%;
  background: none;
  border-radius: 2px;
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_main .main2 .main_nav_m .swiper-slide .explain::before {
  content: "";
  position: absolute;
  bottom: 1px;
  right: 0;
  left: 0;
  width: 0;
  height: 0;
  opacity: 0;
  margin: auto;
  border: 5px solid transparent;
  border-bottom-color: #1696f4;
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_main .main3 {
  overflow: hidden;
  padding: 0 0 100px;
}
.index_main .main3 .list {
  margin-top: 40px;
}
.index_main .main3 .list .item {
  width: 31.5%;
  overflow: hidden;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main3 .list .item:nth-child(n+4) {
  margin-top: 30px;
}
.index_main .main3 .list .item:not(:nth-child(3n-2)) {
  margin-left: 2.75%;
}
.index_main .main3 .list .item .item_explain {
  padding: 27px 30px 28px;
  background: #eeeeee;
  position: relative;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main3 .list .item .item_explain .explain_title {
  font-size: 22px;
  color: #424242;
  max-width: 72%;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
}
.index_main .main3 .list .item .item_explain .line {
  width: 42px;
  height: 2px;
  margin-top: 16px;
  background: rgba(102, 102, 102, 0.4);
}
.index_main .main3 .list .item .item_explain .explain_content {
  font-size: 16px;
  color: #777777;
  margin-top: 16px;
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-height: 48px;
  min-height: 48px;
  line-height: 24px;
}
.index_main .main3 .list .item .item_explain .explain_icon {
  font-size: 50px;
  line-height: 1em;
  position: absolute;
  color: rgba(0, 0, 0, 0.6);
  z-index: 2;
  top: 15px;
  right: 15px;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main3 .list .item .picture_container {
  padding-top: 68.29%;
  background: #f9f9f9;
}
.index_main .main3 .list .item .picture_container img {
  -o-transition-duration: 0.5s;
  -moz-transition-duration: 0.5s;
  -webkit-transition-duration: 0.5s;
  transition-duration: 0.5s;
}
.index_main .main3 .list .item:nth-child(3n-1) {
  display: box;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-flex-direction: column;
  -moz-flex-direction: column;
  -ms-flex-direction: column;
  -o-flex-direction: column;
  flex-direction: column;
}
.index_main .main3 .list .item:nth-child(3n-1) .item_explain {
  -webkit-box-ordinal-group: 2;
  -moz-box-ordinal-group: 2;
  -ms-flex-order: 2;
  -webkit-order: 2;
  order: 2;
}
.index_main .main3 .list .item:nth-child(3n-1) .picture_container {
  -webkit-box-ordinal-group: 1;
  -moz-box-ordinal-group: 1;
  -ms-flex-order: 1;
  -webkit-order: 1;
  order: 1;
}
.index_main .main3 .list .item:hover {
  box-shadow: 0px 0px 30px rgba(0, 0, 0, 0.06);
}
.index_main .main3 .list .item:hover .item_explain {
  background: #fff;
}
.index_main .main3 .list .item:hover .item_explain .explain_icon {
  -o-transform: rotateY(360deg);
  -moz-transform: rotateY(360deg);
  -webkit-transform: rotateY(360deg);
  transform: rotateY(360deg);
  color: #1696f4;
}
.index_main .main3 .list .item:hover .picture_container img {
  -o-transform: translate3d(0, 0, 0) scale(1.06);
  -moz-transform: translate3d(0, 0, 0) scale(1.06);
  -webkit-transform: translate3d(0, 0, 0) scale(1.06);
  transform: translate3d(0, 0, 0) scale(1.06);
}
.index_main .main3 .main_more {
  margin: 40px auto 0;
}
.index_main .main4 {
  padding: 80px 0;
  overflow: hidden;
  background: #edf1f2;
}
.index_main .main4 .main_container {
  margin-top: 40px;
}
.index_main .main4 .main_left {
  width: 30%;
  overflow: hidden;
  position: relative;
}
.index_main .main4 .main_left .picture_container {
  padding-top: 134.61%;
  background: #fff;
}
.index_main .main4 .main_left .picture_container img {
  -o-transition-duration: 0.6s;
  -moz-transition-duration: 0.6s;
  -webkit-transition-duration: 0.6s;
  transition-duration: 0.6s;
}
.index_main .main4 .main_left .explain {
  position: absolute;
  width: 100%;
  bottom: 0;
  left: 0;
  padding: 0 20px;
  background: rgba(0, 0, 0, 0.4);
}
.index_main .main4 .main_left .explain .explain_title {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  font-size: 14px;
  color: #ffffff;
  line-height: 70px;
  padding-right: 54px;
}
.index_main .main4 .main_left .explain .explain_link {
  position: absolute;
  top: 0;
  right: 20px;
  color: #fff;
  font-size: 26px;
  line-height: 70px;
}
.index_main .main4 .main_left:hover .picture_container img {
  -o-transform: translate3d(0, 0, 0) scale(1.06);
  -moz-transform: translate3d(0, 0, 0) scale(1.06);
  -webkit-transform: translate3d(0, 0, 0) scale(1.06);
  transform: translate3d(0, 0, 0) scale(1.06);
}
.index_main .main4 .main_middle,
.index_main .main4 .main_right {
  width: 33.84%;
  display: box;
  display: -webkit-box;
  display: -moz-box;
  display: -ms-flexbox;
  display: -webkit-flex;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-flex-direction: column;
  -moz-flex-direction: column;
  -ms-flex-direction: column;
  -o-flex-direction: column;
  flex-direction: column;
  -webkit-box-pack: justify;
  -webkit-justify-content: space-between;
  -moz-justify-content: space-between;
  -ms-justify-content: space-between;
  -o-justify-content: space-between;
  justify-content: space-between;
}
.index_main .main4 .main_middle .item,
.index_main .main4 .main_right .item {
  background: #fff;
  -o-transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  transition: all 0.5s;
}
.index_main .main4 .main_middle .item:nth-child(1),
.index_main .main4 .main_right .item:nth-child(1) {
  -o-animation-delay: 0s;
  -moz-animation-delay: 0s;
  -webkit-animation-delay: 0s;
  animation-delay: 0s;
}
.index_main .main4 .main_middle .item:nth-child(2),
.index_main .main4 .main_right .item:nth-child(2) {
  -o-animation-delay: 0.1s;
  -moz-animation-delay: 0.1s;
  -webkit-animation-delay: 0.1s;
  animation-delay: 0.1s;
}
.index_main .main4 .main_middle .item:nth-child(3),
.index_main .main4 .main_right .item:nth-child(3) {
  -o-animation-delay: 0.2s;
  -moz-animation-delay: 0.2s;
  -webkit-animation-delay: 0.2s;
  animation-delay: 0.2s;
}
.index_main .main4 .main_middle .item:not(:first-child),
.index_main .main4 .main_right .item:not(:first-child) {
  margin-top: 15px;
}
.index_main .main4 .main_middle .item:hover,
.index_main .main4 .main_right .item:hover {
  background: #1696f4;
}
.index_main .main4 .main_middle .item {
  padding: 35px 40px 32px;
}
.index_main .main4 .main_middle .item:not(:first-child) {
  margin-top: 15px;
}
.index_main .main4 .main_middle .item .explain_title {
  font-size: 20px;
  font-weight: bold;
  color: #555555;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_middle .item .explain_content {
  font-size: 14px;
  margin-top: 20px;
  color: #999999;
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-height: 52px;
  min-height: 52px;
  line-height: 26px;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_middle .item .explain_info {
  margin-top: 30px;
}
.index_main .main4 .main_middle .item .explain_info .explain_time {
  font-family: "arial";
  text-align: center;
}
.index_main .main4 .main_middle .item .explain_info .explain_time .explain_time_day {
  letter-spacing: 1px;
  line-height: 1em;
  font-size: 42px;
  color: #999999;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_middle .item .explain_info .explain_time .explain_time_year {
  font-size: 12px;
  color: #aaaaaa;
  line-height: 1em;
  margin-top: 5px;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_middle .item .explain_info .explain_link {
  font-size: 26px;
  line-height: 28px;
  padding-left: 16px;
  position: relative;
  color: rgba(0, 0, 0, 0.5);
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_middle .item .explain_info .explain_link::after {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  width: 1px;
  height: 24px;
  background: rgba(102, 102, 102, 0.3);
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_main .main4 .main_middle .item:hover .explain_title,
.index_main .main4 .main_middle .item:hover .explain_content {
  color: #fff;
}
.index_main .main4 .main_middle .item:hover .explain_info .explain_time .explain_time_day,
.index_main .main4 .main_middle .item:hover .explain_info .explain_time .explain_time_year {
  color: #fff;
}
.index_main .main4 .main_middle .item:hover .explain_info .explain_link {
  color: #fff;
}
.index_main .main4 .main_middle .item:hover .explain_info .explain_link::after {
  background: rgba(255, 255, 255, 0.3);
}
.index_main .main4 .main_right .item {
  padding: 38px 40px 35px;
}
.index_main .main4 .main_right .item .explain_time {
  font-family: "arial";
  text-align: center;
}
.index_main .main4 .main_right .item .explain_time .explain_time_day {
  font-size: 42px;
  line-height: 1em;
  letter-spacing: 1px;
  color: #999999;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_right .item .explain_time .explain_time_year {
  font-size: 12px;
  line-height: 1em;
  color: #aaaaaa;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_right .item .explain_time .explain_time_line {
  width: 16px;
  height: 1px;
  left: 2px;
  position: relative;
  margin: 12px 0 15px;
  background: rgba(170, 170, 170, 0.5);
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_main .main4 .main_right .item .line {
  width: 2px;
  height: 80px;
  margin-left: 35px;
  margin-right: 30px;
  background: rgba(102, 102, 102, 0.1);
  -o-transition: all 0.35s;
  -moz-transition: all 0.35s;
  -webkit-transition: all 0.35s;
  transition: all 0.35s;
}
.index_main .main4 .main_right .item .explain .explain_title {
  font-size: 18px;
  font-weight: bold;
  color: #555555;
  overflow: hidden;
  display: -webkit-box;
  text-overflow: ellipsis;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  max-height: 52px;
  min-height: 52px;
  line-height: 26px;
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_right .item .explain .explain_link {
  font-size: 26px;
  margin-top: 10px;
  line-height: 28px;
  color: rgba(0, 0, 0, 0.5);
  -o-transition: color 0.35s;
  -moz-transition: color 0.35s;
  -webkit-transition: color 0.35s;
  transition: color 0.35s;
}
.index_main .main4 .main_right .item:hover .explain_time .explain_time_day,
.index_main .main4 .main_right .item:hover .explain_time .explain_time_year {
  color: #fff;
}
.index_main .main4 .main_right .item:hover .explain_time .explain_time_line {
  background: rgba(255, 255, 255, 0.5);
}
.index_main .main4 .main_right .item:hover .line {
  background: rgba(255, 255, 255, 0.1);
}
.index_main .main4 .main_right .item:hover .explain .explain_title,
.index_main .main4 .main_right .item:hover .explain .explain_link {
  color: #fff;
}
.index_main .main4 .main_more {
  margin: 40px auto 0;
}
@media screen and (max-width: 1450px) {
  .index_banner .swiper-slide .item_explain .explain_container {
    width: 75%;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_title {
    font-size: 40px;
    letter-spacing: 2px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_content {
    font-size: 24px;
    margin-top: 15px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_desc {
    font-size: 14px;
    margin-top: 10px;
    line-height: 20px;
    letter-spacing: 1px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link {
    margin-top: 50px;
    line-height: 40px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_text {
    font-size: 14px;
    padding: 0 12px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_icon {
    width: 44px;
    font-size: 18px;
  }
  .index_banner .swiper-button {
    width: 70px;
    height: 70px;
    font-size: 18px;
    margin-top: 10px;
    line-height: 70px;
  }
  .index_banner .swiper-pagination {
    bottom: 20px;
  }
}
@media screen and (max-width: 1300px) {
  .index_banner .swiper-slide .item_picture .p_picture {
    display: none;
  }
  .index_banner .swiper-slide .item_picture .m_picture {
    display: block;
  }
  .index_main .main4 .main_left .picture_container {
    padding: 0;
    height: 100%;
  }
  .index_main .main4 .main_left .picture_container img {
    left: 50%;
    right: auto;
    height: 100%;
    max-width: none;
    -o-transform: translate3d(-50%, 0, 0);
    -moz-transform: translate3d(-50%, 0, 0);
    -webkit-transform: translate3d(-50%, 0, 0);
    transform: translate3d(-50%, 0, 0);
  }
  .index_main .main4 .main_left:hover .picture_container img {
    -o-transform: translate3d(-50%, 0, 0);
    -moz-transform: translate3d(-50%, 0, 0);
    -webkit-transform: translate3d(-50%, 0, 0);
    transform: translate3d(-50%, 0, 0);
  }
}
@media screen and (max-width: 1200px) {
  .index_banner .swiper-slide .item_explain .explain_container {
    padding-top: 0;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_title {
    font-size: 36px;
    letter-spacing: 0px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_content {
    font-size: 22px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_desc {
    font-size: 12px;
    line-height: 18px;
    letter-spacing: 0px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link {
    margin-top: 40px;
    line-height: 36px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_text {
    font-size: 12px;
    padding: 0 10px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_icon {
    width: 40px;
    font-size: 16px;
  }
  .index_banner .swiper-button {
    width: 60px;
    height: 60px;
    line-height: 60px;
    margin-top: -30px;
  }
  .index_banner .swiper-pagination {
    bottom: 15px;
  }
  .index_main .main .main_title .main_title_desc {
    font-size: 36px;
  }
  .index_main .main .main_title .main_title_text {
    font-size: 22px;
  }
  .index_main .main .main_more {
    width: 150px;
    height: 46px;
  }
  .index_main .main1 {
    padding: 60px 0;
  }
  .index_main .main1 .main_left {
    width: 55%;
  }
  .index_main .main1 .main_left .line {
    width: 45px;
    margin-top: 25px;
  }
  .index_main .main1 .main_left .main_explain {
    margin-top: 25px;
  }
  .index_main .main1 .main_left .list {
    margin-top: 30px;
  }
  .index_main .main1 .main_left .list .item {
    padding: 0 15px;
  }
  .index_main .main1 .main_left .main_more {
    margin-top: 50px;
  }
  .index_main .main1 .main_right {
    width: 42%;
  }
  .index_main .main2 {
    padding: 0 0 60px;
  }
  .index_main .main2 #particles-js {
    display: none;
  }
  .index_main .main2 .main_container {
    margin-top: 30px;
  }
  .index_main .main2 .main_container .main_picture {
    width: 50%;
    z-index: 11;
    height: auto;
    overflow: hidden;
    position: relative;
  }
  .index_main .main2 .main_container .main_picture .picture_container {
    padding-top: 64.58%;
    position: relative;
    height: auto;
    width: 100%;
    left: 0;
    -o-transform: translate3d(0, 0, 0);
    -moz-transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
    transform: translate3d(0, 0, 0);
  }
  .index_main .main2 .main_container .center {
    height: 100%;
    display: box;
    display: -webkit-box;
    display: -moz-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: end;
    -webkit-justify-content: flex-end;
    -moz-justify-content: flex-end;
    -ms-justify-content: flex-end;
    -o-justify-content: flex-end;
    justify-content: flex-end;
    -webkit-box-align: center;
    -webkit-align-items: center;
    -moz-align-items: center;
    -ms-align-items: center;
    -o-align-items: center;
    align-items: center;
  }
  .index_main .main2 .main_container .main_explain {
    width: 50%;
    padding-top: 0;
    padding-left: 30px;
  }
  .index_main .main2 .main_container .main_explain .explain_title {
    font-size: 24px;
  }
  .index_main .main2 .main_container .main_explain .explain_desc {
    font-size: 16px;
    margin-top: 10px;
  }
  .index_main .main2 .main_container .main_explain .explain_content {
    margin-top: 20px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 60px;
    min-height: 0px;
    line-height: 30px;
  }
  .index_main .main2 .main_container .main_explain .main_more {
    margin-top: 30px;
  }
  .index_main .main2 .main_nav {
    display: none;
  }
  .index_main .main2 .main_nav_m {
    display: block;
  }
  .index_main .main3 {
    padding: 0 0 60px;
  }
  .index_main .main3 .list .item {
    width: 32.4%;
  }
  .index_main .main3 .list .item:nth-child(n+4) {
    margin-top: 20px;
  }
  .index_main .main3 .list .item:not(:nth-child(3n-2)) {
    margin-left: 1.4%;
  }
  .index_main .main3 .list .item .item_explain {
    padding: 20px 20px 20px;
  }
  .index_main .main3 .list .item .item_explain .explain_title {
    font-size: 18px;
  }
  .index_main .main3 .list .item .item_explain .line {
    width: 40px;
    margin-top: 15px;
  }
  .index_main .main3 .list .item .item_explain .explain_content {
    font-size: 14px;
    margin-top: 15px;
  }
  .index_main .main3 .list .item .item_explain .explain_icon {
    font-size: 44px;
    right: 10px;
    top: 10px;
  }
  .index_main .main4 {
    padding: 60px 0;
  }
  .index_main .main4 .main_left {
    display: none;
  }
  .index_main .main4 .main_middle,
  .index_main .main4 .main_right {
    width: 49%;
  }
  .index_main .main4 .main_middle .item:not(:first-child),
  .index_main .main4 .main_right .item:not(:first-child) {
    margin-top: 12px;
  }
  .index_main .main4 .main_middle .item {
    padding: 25px 30px 28px;
  }
  .index_main .main4 .main_middle .item:not(:first-child) {
    margin-top: 12px;
  }
  .index_main .main4 .main_middle .item .explain_title {
    font-size: 18px;
  }
  .index_main .main4 .main_middle .item .explain_content {
    margin-top: 12px;
  }
  .index_main .main4 .main_middle .item .explain_info {
    margin-top: 20px;
  }
  .index_main .main4 .main_middle .item .explain_info .explain_time .explain_time_day {
    font-size: 36px;
  }
  .index_main .main4 .main_middle .item .explain_info .explain_time .explain_time_year {
    margin-top: 3px;
  }
  .index_main .main4 .main_middle .item .explain_info .explain_link {
    font-size: 24px;
    line-height: 26px;
    padding-left: 12px;
  }
  .index_main .main4 .main_middle .item .explain_info .explain_link::after {
    top: 1px;
  }
  .index_main .main4 .main_right .item {
    padding: 25px 30px 28px;
  }
  .index_main .main4 .main_right .item .explain_time {
    white-space: nowrap;
  }
  .index_main .main4 .main_right .item .explain_time .explain_time_day {
    font-size: 36px;
  }
  .index_main .main4 .main_right .item .explain_time .explain_time_line {
    left: 2px;
    width: 16px;
    margin: 10px 0 12px;
  }
  .index_main .main4 .main_right .item .line {
    height: 60px;
    margin-left: 25px;
    margin-right: 25px;
  }
  .index_main .main4 .main_right .item .explain .explain_title {
    font-size: 18px;
  }
  .index_main .main4 .main_right .item .explain .explain_link {
    font-size: 24px;
    line-height: 26px;
  }
}
@media screen and (max-width: 992px) {
  .index_main .main2 .main_container .main_picture {
    width: 100%;
  }
  .index_main .main2 .main_container .center {
    overflow: hidden;
    position: static;
    height: auto;
  }
  .index_main .main2 .main_container .main_explain {
    width: 100%;
    padding: 40px 0;
  }
}
@media screen and (max-width: 768px) {
  .index_banner .swiper-slide .item_explain .explain_container .explain_title {
    font-size: 30px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_content {
    font-size: 18px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 48px;
    min-height: 0px;
    line-height: 24px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_desc {
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 36px;
    min-height: 0px;
    line-height: 18px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link {
    margin-top: 30px;
    line-height: 36px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_text {
    font-size: 12px;
    padding: 0 10px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_icon {
    width: 40px;
    font-size: 16px;
  }
  .index_banner .swiper-button {
    display: none;
  }
  .index_banner .swiper-pagination {
    bottom: 10px;
  }
  .index_banner .swiper-pagination span {
    width: 40px;
    margin: 0 5px;
  }
  .index_main .main .main_title .main_title_desc {
    font-size: 28px;
  }
  .index_main .main .main_title .main_title_text {
    font-size: 16px;
  }
  .index_main .main .main_more {
    width: 130px;
    height: 44px;
  }
  .index_main .main1 {
    padding: 40px 0;
  }
  .index_main .main1 .main_left {
    width: 100%;
  }
  .index_main .main1 .main_left .line {
    margin-top: 18px;
  }
  .index_main .main1 .main_left .main_explain {
    margin-top: 18px;
    line-height: 26px;
  }
  .index_main .main1 .main_left .main_left_picture {
    display: block;
    margin: 20px 0 15px;
  }
  .index_main .main1 .main_left .list {
    margin-top: 20px;
  }
  .index_main .main1 .main_left .list .item {
    padding: 0 10px;
  }
  .index_main .main1 .main_left .list .item .item_num {
    letter-spacing: 0px;
    font-size: 36px;
  }
  .index_main .main1 .main_left .list .item .item_icon {
    font-size: 18px;
  }
  .index_main .main1 .main_left .list .item .item_explain {
    font-size: 12px;
    margin-top: 12px;
    line-height: 18px;
  }
  .index_main .main1 .main_left .main_more {
    margin: 25px auto 0;
  }
  .index_main .main1 .main_right {
    display: none;
  }
  .index_main .main2 {
    padding: 0 0 40px;
  }
  .index_main .main2 .main_container {
    margin-top: 20px;
  }
  .index_main .main2 .main_container .main_explain {
    padding: 25px 0;
  }
  .index_main .main2 .main_container .main_explain .explain_title {
    font-size: 20px;
    line-height: 1.3em;
  }
  .index_main .main2 .main_container .main_explain .explain_desc {
    font-size: 14px;
    margin-top: 5px;
  }
  .index_main .main2 .main_container .main_explain .explain_content {
    font-size: 14px;
    margin-top: 15px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 48px;
    min-height: 0px;
    line-height: 24px;
  }
  .index_main .main2 .main_container .main_explain .main_more {
    margin-top: 20px;
  }
  .index_main .main2 .main_nav_m {
    margin-top: 30px;
  }
  .index_main .main2 .main_nav_m .swiper-slide .explain {
    padding-bottom: 15px;
    font-size: 16px;
  }
  .index_main .main3 {
    padding: 0 0 40px;
  }
  .index_main .main3 .list {
    margin-top: 30px;
  }
  .index_main .main3 .list .item {
    width: 49%;
  }
  .index_main .main3 .list .item:nth-child(n+3) {
    margin-top: 15px;
  }
  .index_main .main3 .list .item:not(:nth-child(3n-2)) {
    margin-left: 0;
  }
  .index_main .main3 .list .item:not(:nth-child(2n-1)) {
    margin-left: 2%;
  }
  .index_main .main3 .main_more {
    margin: 30px auto 0;
  }
  .index_main .main4 {
    padding: 40px 0;
  }
  .index_main .main4 .main_container {
    display: block;
    margin-top: 30px;
  }
  .index_main .main4 .main_middle,
  .index_main .main4 .main_right {
    width: 100%;
  }
  .index_main .main4 .main_middle .item:nth-child(1),
  .index_main .main4 .main_right .item:nth-child(1) {
    -o-animation-delay: 0s;
    -moz-animation-delay: 0s;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
  }
  .index_main .main4 .main_middle .item:nth-child(2),
  .index_main .main4 .main_right .item:nth-child(2) {
    -o-animation-delay: 0s;
    -moz-animation-delay: 0s;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
  }
  .index_main .main4 .main_middle .item:nth-child(3),
  .index_main .main4 .main_right .item:nth-child(3) {
    -o-animation-delay: 0s;
    -moz-animation-delay: 0s;
    -webkit-animation-delay: 0s;
    animation-delay: 0s;
  }
  .index_main .main4 .main_right {
    margin-top: 12px;
  }
  .index_main .main4 .main_more {
    margin: 30px auto 0;
  }
}
@media screen and (max-width: 480px) {
  .index_banner .swiper-slide .item_explain .explain_container {
    width: 90%;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_title {
    font-size: 22px;
    text-overflow: ellipsis;
    white-space: nowrap;
    overflow: hidden;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_content {
    font-size: 14px;
    margin-top: 10px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 40px;
    min-height: 0px;
    line-height: 20px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_desc {
    margin-top: 5px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 32px;
    min-height: 0px;
    line-height: 16px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link {
    margin-top: 15px;
    line-height: 32px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_text {
    font-size: 12px;
    padding: 0 10px;
  }
  .index_banner .swiper-slide .item_explain .explain_container .explain_link .explain_link_icon {
    width: 36px;
    font-size: 14px;
  }
  .index_banner .swiper-pagination {
    bottom: 10px;
  }
  .index_banner .swiper-pagination span {
    width: 36px;
    margin: 0 5px;
  }
  .index_main .main .main_title .main_title_desc {
    font-size: 24px;
  }
  .index_main .main .main_title .main_title_text {
    font-size: 14px;
  }
  .index_main .main .main_more {
    width: 120px;
    height: 40px;
  }
  .index_main .main1 {
    padding: 30px 0;
  }
  .index_main .main1 .main_left .line {
    margin-top: 15px;
  }
  .index_main .main1 .main_left .main_explain {
    margin-top: 15px;
  }
  .index_main .main1 .main_left .main_left_picture {
    margin: 15px 0;
  }
  .index_main .main1 .main_left .list {
    display: block;
  }
  .index_main .main1 .main_left .list .item {
    background: #fff;
    padding: 18px 15px;
    box-shadow: 0 0 15px rgba(0, 0, 0, 0.08);
  }
  .index_main .main1 .main_left .list .item:not(:first-child) {
    margin-top: 10px;
  }
  .index_main .main1 .main_left .list .item .item_num {
    letter-spacing: 0px;
    font-size: 36px;
  }
  .index_main .main1 .main_left .list .item .item_icon {
    font-size: 18px;
  }
  .index_main .main1 .main_left .list .item .item_explain {
    font-size: 12px;
    margin-top: 12px;
    line-height: 18px;
  }
  .index_main .main1 .main_left .list .item::after {
    display: none;
  }
  .index_main .main2 {
    padding: 10px 0 30px;
  }
  .index_main .main2 .main_container {
    margin-top: 10px;
  }
  .index_main .main2 .main_container .main_explain {
    padding: 20px 0;
  }
  .index_main .main2 .main_container .main_explain .explain_title {
    font-size: 18px;
  }
  .index_main .main2 .main_container .main_explain .explain_desc {
    font-size: 12px;
    margin-top: 3px;
  }
  .index_main .main2 .main_container .main_explain .explain_content {
    margin-top: 12px;
  }
  .index_main .main2 .main_container .main_explain .main_more {
    margin-top: 18px;
  }
  .index_main .main2 .main_nav_m {
    margin-top: 25px;
  }
  .index_main .main3 {
    padding: 0 0 30px;
  }
  .index_main .main3 .list {
    margin-top: 25px;
  }
  .index_main .main3 .list .item {
    width: 100%;
  }
  .index_main .main3 .list .item:nth-child(n+2) {
    margin-top: 15px;
  }
  .index_main .main3 .list .item:not(:nth-child(2n-1)) {
    margin-left: 0;
  }
  .index_main .main3 .list .item:nth-child(3n-1) {
    display: block;
  }
  .index_main .main3 .list .item:hover {
    box-shadow: none;
  }
  .index_main .main3 .list .item:hover .item_explain {
    background: #eeeeee;
  }
  .index_main .main3 .list .item:hover .item_explain .explain_icon {
    -o-transform: rotateY(0deg);
    -moz-transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
    transform: rotateY(0deg);
    color: rgba(0, 0, 0, 0.6);
  }
  .index_main .main3 .list .item:hover .picture_container img {
    -o-transform: translate3d(0, 0, 0) scale(1);
    -moz-transform: translate3d(0, 0, 0) scale(1);
    -webkit-transform: translate3d(0, 0, 0) scale(1);
    transform: translate3d(0, 0, 0) scale(1);
  }
  .index_main .main3 .main_more {
    margin: 25px auto 0;
  }
  .index_main .main4 {
    padding: 30px 0;
  }
  .index_main .main4 .main_container {
    margin-top: 25px;
  }
  .index_main .main4 .main_middle .item {
    padding: 20px;
  }
  .index_main .main4 .main_middle .item .explain_title {
    font-size: 16px;
  }
  .index_main .main4 .main_middle .item .explain_content {
    margin-top: 10px;
    overflow: hidden;
    display: -webkit-box;
    text-overflow: ellipsis;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    max-height: 48px;
    min-height: 48px;
    line-height: 24px;
  }
  .index_main .main4 .main_middle .item .explain_info {
    margin-top: 15px;
  }
  .index_main .main4 .main_middle .item .explain_info .explain_time .explain_time_day {
    font-size: 30px;
  }
  .index_main .main4 .main_right .item {
    padding: 20px;
  }
  .index_main .main4 .main_right .item .explain_time .explain_time_day {
    font-size: 30px;
  }
  .index_main .main4 .main_right .item .explain_time .explain_time_line {
    margin: 8px 0 10px;
  }
  .index_main .main4 .main_right .item .line {
    height: 50px;
    margin-left: 18px;
    margin-right: 18px;
  }
  .index_main .main4 .main_right .item .explain .explain_title {
    font-size: 16px;
  }
  .index_main .main4 .main_more {
    margin: 25px auto 0;
  }
}