/* 通用 */
@font-face {
  font-family: 'Huiwen-mincho';
  src: url('../fonts/Huiwen-mincho.otf') format('opentype');
  font-weight: normal;
  font-style: normal;
}
@font-face {
  font-family: 'LXGW XiHei MN';
  src: url('../fonts/LXGWXiHeiMN.ttf') format('truetype');
  font-weight: normal;
  font-style: normal;
}
body {
  background: none;
  font-size: 16px;
  font-weight: normal;
  overflow-x: hidden;
  position: relative;
}
a {
  text-decoration: none;
}
a:active,
a:hover,
a:focus {
  text-decoration: none;
}
img {
  max-width: 100%;
}
.inner {
  box-sizing: border-box;
  position: relative;
  width: 1200px;
  margin-left: auto;
  margin-right: auto;
}
.inner750 {
  width: 750px;
}
.w-row {
  display: flex;
  justify-content: space-between;
}
/* 头部header 开始 */
/* 头部header 结束 */
/* 滚动条 开始 */
/* 滚动条 结束 */
.zt_side_nav {
  z-index: 999;
  position: absolute;
  /* top: 1800px; */
  top: 1230px;
  right: 40px;
  width: 250px;
  border-left: 1px solid #666;
  padding-left: 10px;
}
.zt_side_nav .side_nav_1st {
  display: flex;
  font-family: LXGW XiHei MN;
  font-size: 14px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: normal;
  color: #333;
}
.zt_side_nav .side_nav_1st:not(:first-child) {
  margin-top: 40px;
}
.zt_side_nav .side_nav_1st div {
  display: flex;
  flex-direction: column;
}
.zt_side_nav .side_nav_2nd {
  margin-top: 10px;
  display: block;
  font-size: 12px;
  font-weight: normal;
  line-height: 16px;
  text-align: justify;
  letter-spacing: normal;
  color: #666666;
  padding-left: 63px;
}
.zt_side_nav .side_nav_2nd:hover,
.zt_side_nav .side_nav_2nd.active {
  color: #993d21;
}
.zt_side_nav .side_nav_2nd span {
  padding-left: 15px;
}
.zt_side_nav.fixed {
  position: fixed;
  top: 10%;
}
[id*='section'] {
  position: relative;
  /* 确保offset计算准确 */
}
.p {
  margin: 10px 0;
  font-family: LXGW XiHei MN;
  font-size: 14px;
  font-weight: normal;
  line-height: 2;
  color: #000;
  text-align: justify;
  word-break: break-word;
}
.p a:hover {
  color: #993d21;
}
.p img {
  vertical-align: middle;
  margin-top: -3px;
  margin-right: 8px;
}
.under_link {
  text-decoration: underline !important;
  word-break: break-all;
  color: #0f58bc;
}
.under_link:hover {
  color: #993d21;
}
.tal {
  text-align: left;
}
.tac {
  text-align: center;
}
.p.tac{
  font-size: 12px;
}
.tar {
  text-align: right;
}
.theme_color {
  color: #993d21;
}
.theme_color2 {
  color: #cb4020;
}
.inline_block {
  display: inline-block;
}
.block {
  display: block;
}
.title_1st {
  font-family: Huiwen-mincho;
  font-size: 28px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: normal;
  color: #355660;
}
.title_1st p:nth-child(2) {
  font-size: 44px;
}
.dy {
  font-family: Huiwen-mincho;
  font-size: 22px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: normal;
  color: #355660;
}
.title_2nd {
  margin-top: 120px;
  margin-bottom: 120px;
  display: flex;
  justify-content: center;
  font-family: Huiwen-mincho;
  font-size: 36px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: normal;
  color: #993d21;
}
.title_2nd div {
  margin-left: 15px;
  display: flex;
  flex-direction: column;
}
.title_2nd div span:nth-child(2) {
  font-size: 28px;
}
.title_3rd {
  margin-top: 120px;
  margin-bottom: 60px;
  font-family: Huiwen-mincho;
  font-size: 20px;
  font-weight: normal;
  line-height: 1.5;
  letter-spacing: normal;
  color: #000000;
}
.title_3rd span {
  position: relative;
}
.title_3rd span::after {
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 100%;
  width: 132px;
  height: 12px;
  background: url(../images/title_3bg.png) no-repeat right center;
  background-size: contain;
}
.p_img {
  display: block;
  margin: 20px auto 0;
}
.gray_box {
  margin-top: 20px;
  margin-bottom: 20px;
  background: #f8f8f8;
  border: 1px solid #f8f8f8;
  padding: 10px 20px;
}
.img_text {
  margin-top: 20px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  background: #f8f8f8;
}
.img_text > img {
  width: 307px;
  height: 349px;
}
.img_text .text {
  width: calc(100% - 307px);
  height: 100%;
  background: #f8f8f8;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.vs_box {
  position: relative;
}
.vs_box::after {
  z-index: 2;
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: url(../images/img_vs.png) no-repeat center;
  background-size: contain;
}
.img_mask_box,
.img_mask_box2,
.img_mask_box3 {
  position: relative;
}
.img_mask_box .mask_title,
.img_mask_box2 .mask_title,
.img_mask_box3 .mask_title {
  padding: 0 1em;
  height: 42px;
  margin: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255, 255, 255, 0.6);
  text-align: center;
  line-height: 1.1;
  font-size: 14px;
  font-weight: normal;
  color: #000000;
}
.img_mask_box img,
.img_mask_box2 img,
.img_mask_box3 img {
  display: block;
  width: 100%;
  height: 244px;
  object-fit: cover;
  transition: all 0.3s;
}
.img_mask_box2 .mask_title {
  height: 111px;
  background: rgba(0, 0, 0, 0.5);
  line-height: 2;
  text-align: justify;
  font-size: 14px;
  color: #ffffff;
}
.img_mask_box2 img {
  height: 271px;
}
.img_mask_box3 .mask_title {
  background: rgba(0, 0, 0, 0.5);
  color: #ffffff;
}
.img_mask_box3 img {
  height: auto;
}
.img27_box {
  position: relative;
}
.img27_box .img27_box_img {
  width: 106px;
  height: 237px;
  z-index: 9;
  position: absolute;
  top: 90px;
  right: 0;
}
.img29_box {
  position: relative;
  padding-bottom: 64px;
}
.img29_box .brown_box {
  width: 406px;
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  -o-transform: translateX(-50%);
  transform: translateX(-50%);
  bottom: 0px;
  background: #993d21;
}
.img29_box .brown_box .p {
  text-align: center;
  color: #fff;
}
.p3_img_box .gray_box {
  margin-bottom: 0;
}
.p_rope {
  position: relative;
  padding-left: 30px;
  padding-bottom: 10px;
}
.p_rope .num {
  z-index: 2;
  content: '';
  position: absolute;
  top: 0px;
  left: 0px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #000;
  font-size: 12px;
  font-weight: normal;
  line-height: 16px;
  letter-spacing: normal;
  color: #ffffff;
  text-align: center;
}
.p_rope::after {
  z-index: 1;
  content: '';
  position: absolute;
  top: 16px;
  left: 8px;
  width: 1px;
  height: 100%;
  border-left: 1px dashed #848484;
}
.p_rope:last-child {
  padding-bottom: 0;
}
.p_rope:last-child::after {
  top: 0px;
}
.p_rope a.theme_color {
  color: blue;
  text-decoration: underline;
}
.part4 {
  margin-top: 120px;
}
.p3_tab_box {
  position: relative;
}
.p3_tab > a {
  position: absolute;
}
.p3_tab > a.a1 {
  top: 490px;
  left: 510px;
}
.p3_tab > a.a2 {
  top: 310px;
  left: 870px;
}
.p3_tab > a.a3 {
  top: 510px;
  left: 370px;
}
.p3_tab > a.a4 {
  top: 210px;
  left: 590px;
}
.p3_tab > a.a5 {
  top: 350px;
  left: 290px;
}
.p3_tab .num {
  transition: all 0.3s;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #636363;
  font-size: 16px;
  font-weight: bold;
  color: #ffffff;
}
.p3_tab .text {
  display: none;
  text-align: center;
  background: rgba(53, 86, 96, 0.2);
  padding: 10px;
  margin-left: 30px;
  margin-top: -30px;
}
.p3_tab > a:hover .num,
.p3_tab > a.cur .num {
  width: 24px;
  height: 24px;
  background: #355660;
  font-size: 18px;
}
.p3_tab > a:hover .text,
.p3_tab > a.cur .text {
  display: block;
}
@keyframes TopBots {
  0% {
    transform: translateY(-15px);
  }
  50% {
    transform: translateY(0px);
  }
  100% {
    transform: translateY(-15px);
  }
}
.TopBots {
  animation: TopBots 1.2s ease-in-out infinite both;
}
@keyframes LeftBots {
  0% {
    transform: translateX(-15px);
  }
  50% {
    transform: translateX(0px);
  }
  100% {
    transform: translateX(-15px);
  }
}
.nav_Chapter3.active {
  position: relative;
}
.nav_Chapter3.active::after {
  content: '← Back';
  position: absolute;
  top: 0;
  left: 230px;
  font-size: 20px;
  font-weight: bold;
  color: #355660;
  animation: LeftBots 1.2s ease-in-out infinite both;
  width: 150px;
}
.splashImage_box {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: #fff;
  z-index: 1000;
}
.splashImage {
  width: 100%;
  height: 100%;
  background: url('../images/splash_bg.png') no-repeat center center;
  background-size: cover;
}
.splashImage_text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  position: absolute;
  left: 50%;
  -webkit-transform: translateX(-50%);
  -ms-transform: translateX(-50%);
  -moz-transform: translateX(-50%);
  -o-transform: translateX(-50%);
  transform: translateX(-50%);
  bottom: 40px;
}
.splashImage_text span {
  font-family: Microsoft YaHei;
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  margin: 20px 0;
}
@keyframes fadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
@keyframes moveUp {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-100%);
  }
}
.fadeIn {
  animation: fadeIn 1s ease-in both;
}
.moveUp {
  animation: moveUp 2s 3.5s ease-out both;
}
.zt_content {
  margin-bottom: 60px;
}
.bottom_back_btn {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  margin-top: 40px;
  animation: TopBots 1.2s ease-in-out infinite both;
}
.video_box video {
  width: 100%;
}
.zt_swiper_box {
  position: relative;
}
.zt_swiper_box .swiper-button-prev,
.zt_swiper_box .swiper-button-next {
  position: absolute;
  top: 50%;
  width: 18px;
  height: 30px;
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}
.zt_swiper_box .swiper-button-prev {
  left: -30px;
  background-image: url(../images/btn_prev.png);
}
.zt_swiper_box .swiper-button-next {
  right: -30px;
  background-image: url(../images/btn_next.png);
}
.zt_info_title {
  font-family: Microsoft YaHei;
  font-size: 15px;
  font-weight: bold;
  line-height: 24px;
  text-align: justify;
  letter-spacing: normal;
  color: #993d21;
  padding-left: 20px;
  background: url(../images/icon_title.png) no-repeat left center;
  background-size: 14px;
}
.zt_info_text {
  font-family: Microsoft YaHei;
  font-size: 15px;
  font-weight: bold;
  line-height: 24px;
  text-align: justify;
  letter-spacing: normal;
  color: #333333;
}
.zt_swiper .img_mask_box3 img {
  height: 220px;
}
.zt_swiper .img_mask_box3 .mask_title {
  font-size: 12px;
  line-height: 1.3;
}
.tab_style1 {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.tab_style1 li {
  width: 31%;
}
.tab_style1 a {
  display: block;
  width: 100%;
  position: relative;
}
.tab_style1 a::after {
  transition: all 0.3s;
  opacity: 0;
  z-index: -1;
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  border: 6px solid #ffffff;
  box-shadow: 0px 4px 10px 0px rgba(0, 0, 0, 0.3);
}
.tab_style1 .img_mask_box3 img {
  height: 116px;
}
.tab_style1 .img_mask_box3 .mask_title {
  height: 33px;
  font-size: 12px;
  padding: 0;
}
.tab_style1 .cur a::after {
  opacity: 1;
}
.pane1 {
  margin-top: -50px;
}
.header_nav {
  position: absolute;
  top: 100px;
  left: 0;
}
.header_nav a {
  transition: all 0.3s;
  display: block;
  font-family: Huiwen-mincho;
  font-size: 16px;
  font-weight: normal;
  line-height: 36px;
  text-align: justify;
  letter-spacing: normal;
  color: #333333;
  position: relative;
}
.header_nav a::after {
  transition: all 0.3s;
  content: '';
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: 0px;
  width: 0px;
  height: 1px;
  background-color: #333;
}
.header_nav a:hover {
  padding-left: 20px;
}
.header_nav a:hover::after {
  width: 15px;
}
.about_back_btn {
  transition: all 0.3s;
  font-family: LXGW XiHei MN;
  font-size: 12px;
  font-weight: normal;
  line-height: 40px;
  text-align: justify;
  letter-spacing: normal;
  color: #000000;
  display: inline-flex;
  justify-content: center;
  align-items: center;
}
.about_back_btn:hover {
  margin-left: -15px;
}
.about_back_btn.about_back_btn1 img {
  margin-right: 10px;
}
.about_back_btn.about_back_btn2 {
  flex-direction: column;
}