body {
  margin: 0;
  color: rgba(0, 0, 0, 0.85);
  font-size: 14px;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-variant: tabular-nums;
  line-height: 1.5715;
  background-color: #fff;
  font-feature-settings: "tnum", "tnum";
}
.main_logo {
  width: 30px;
  margin: 0px 10px 0px auto;
  display: inline-block;
  vertical-align: middle;
  line-height: 1.4;
  color: rgb(33, 150, 243);
}
.layouts {
  display: flex;
  flex: auto;
  flex-direction: column;
  min-height: 0;
  background: #f0f2f5;
}
.layout-header {
  height: 64px;
  padding: 0 50px;
  color: rgba(0, 0, 0, 0.85);
  line-height: 64px;
  background: #001529;
}

.site-layout-background {
  background-color: rgba(0, 0, 0, 0.6);
  color: #ffffff;
  padding-left: 0;
  padding-right: 0;
  position: fixed;
  z-index: 10;
  width: 100%;
}
.header_logo {
  float: left;
  height: 31px;
  line-height: 31px;
  margin: 16px 24px 16px 16px;
}
.header_menu {
  justify-content: flex-end;
  background-color: transparent;
  color: #ffffff;
  border-bottom-color: transparent;
}

.top-content {
  display: flex;
  justify-content: center;
  flex-direction: column;
  color: #fff;
  height: 100vh;
}
.bgswiper-container {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  top: 0;
  z-index: 1;
  height: 100vh;
  width: 100%;
}

.bgswiper-container .image_box {
  width: 100vw;
  height: 100vh;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

.intro-content {
  background-color: #fff;
}

.section_title {
  position: relative;
  padding-bottom: 15px;
}

.section_title::after {
  display: block;
  content: "";
  width: 50px;
  height: 2px;
  background-color: #cc9c6b;
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
}

.knowledge_box {
  height: 260px;
  background-color: rgba(37, 28, 28, 0.9);
  padding: 15px;
  margin-bottom: 10px;
  border-radius: 4px;
  color: #fff;
  border: 1px solid rgba(247, 190, 58, 0.9);
  text-align: left;
}

.knowledge_box .knowledge_box_title {
  text-align: center;
  font-size: 36px;
  font-weight: bold;
  color: rgba(247, 190, 58, 0.9);
}

.App {
  text-align: center;
}

.App-logo {
  height: 40vmin;
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .App-logo {
    animation: App-logo-spin infinite 20s linear;
  }
}

.App-header {
  background-color: #282c34;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: calc(10px + 2vmin);
  color: white;
}

.App-link {
  color: #61dafb;
}

@keyframes App-logo-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

.section {
  position: relative;
  z-index: 2;
  height: 100%;
}

.section-padding {
  padding: 50px 0;
}

.white-text,
.white-text > span {
  color: #ffffff;
}

.gold-text {
  color: #cc9c6b !important;
}

.bg-darkmask {
  background-color: rgba(0, 0, 0, 0.3);
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

button,
html [type="button"],
[type="reset"],
[type="submit"] {
  -webkit-appearance: button;
}

@media screen and (max-width: 767px) {
  .xs-hidden {
    display: none !important;
  }
}

.mobile-menu-wrapper {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 10;
  width: 100%;
  height: 100%;
  display: none;
}

.mobile-menu-wrapper .menu-mask {
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
}

.mobile-menu-wrapper .mobile-menu-list {
  padding: 30px;
  color: #ffffff;
  position: absolute;
  z-index: 2;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.mobile-menu-wrapper .mobile-menu-list ul {
  margin-bottom: 0;
  padding-left: 0;
}

.mobile-menu-wrapper .mobile-menu-list ul li {
  list-style: none;
  font-size: 1.4rem;
  padding: 6px 0;
  border-bottom: 1px solid #e1e1e1;
}

.close_btn {
  font-size: 2rem;
  width: 50px;
  text-align: center;
  margin-top: 10px;
  padding-top: 10px;
  padding-bottom: 10px;
}

.mobile-menu-wrapper.show {
  display: block;
}

.article_section {
  margin-top: 64px;
}

.search_box {
  width: 100%;
  height: 100%;
  position: fixed;
  left: 0;
  top: 0;
  display: flex;
}
.search_bg{
  background-position: center;
  background-size: cover;
  flex: 2;
  height: 100%;
  
}

.search_bg::after {
  display: block;
  content: "";
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, .7);
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
}
.search_space{
  height: 100%;
  flex: 1;
  background-color: #fff;
}

.shadow-card {
  box-shadow:0 1px 2px -2px #00000029,0 3px 6px #0000001f,0 5px 12px 4px #00000017
}