.nav .nav-main {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  max-width: 90%;
  padding: 20px 0;
  margin: 0 auto;
  color: #333333;
}

.nav .logo {
  -webkit-box-flex: 0;
      -ms-flex: none;
          flex: none;
}

.nav .logo img {
  display: block;
  height: 72px;
}

.nav-box {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
}

.nav ul {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: left;
      -ms-flex-pack: left;
          justify-content: left;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  gap: 28px;
}

.nav ul > li {
  position: relative;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  max-width: 180px;
  border-bottom: 2px solid transparent;
}

.nav ul li.active {
  color: #940808;
  border-bottom: 2px solid #940808;
}

.nav ul li:hover {
  color: #940808;
  border-bottom: 2px solid #940808;
}

.nav ul li a {
  height: 52px;
  line-height: 52px;
  display: block;
  width: 100%;
  font-size: 20px;
  color: #333;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav ul li ol {
  z-index: 9999;
  position: absolute;
  top: 54px;
  left: 0;
  display: none;
  background: #fff;
  -webkit-box-shadow: #777 0 1px 2px;
          box-shadow: #777 0 1px 2px;
  width: auto;
  min-width: 100%;
  white-space: nowrap;
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
}

.nav ul li ol li {
  display: block;
  /* height: 40px;
  line-height: 40px; */
  color: #000;
}

.nav ul li ol li:hover {
  /* background-color: transparent; */
  border-bottom: 0;
  background-color: #940808;
}

.nav ul li ol li:hover a {
  font-size: 18px;
  color: #ffffff;
}

.nav ul > li:hover ol {
  display: block;
}

.nav ul > li ol li a {
  color: #000;
  line-height: 2.5em;
  height: 2.5em;
  padding: 0 1em;
  text-align: left;
  font-size: 16px;
  font-weight: normal;
  border-bottom: 0;
}

.nav ul ol dl {
  z-index: 9999;
  position: absolute;
  display: none;
  margin-left: calc(100% + 1px);
  margin-top: -2.5em;
  width: auto;
  background: #fff;
  -webkit-box-shadow: #777 0 0 2px;
          box-shadow: #777 0 0 2px;
}

.nav ul ol dl::before {
  content: "";
  position: absolute;
  top: 0.8em;
  left: -0.5em;
  width: 0;
  height: 0;
  border-right: 0.5em solid #999;
  border-top: 0.5em solid transparent;
  border-bottom: 0.5em solid transparent;
}

.nav ul ol > li:hover dl {
  display: block;
}

.nav ul ol > li:hover dl a {
  color: #000;
  text-decoration: none;
  font-size: 16px;
}

.nav ul ol dl div {
  z-index: 9999;
  position: absolute;
  display: none;
  margin-left: calc(100% + 1px);
  margin-top: -2.5em;
  width: auto;
  background: #fff;
  -webkit-box-shadow: #777 0 0 2px;
          box-shadow: #777 0 0 2px;
}

.nav ul ol dl div::before {
  content: "";
  position: absolute;
  top: 0.8em;
  left: -0.5em;
  width: 0;
  height: 0;
  border-right: 0.5em solid #999;
  border-top: 0.5em solid transparent;
  border-bottom: 0.5em solid transparent;
}

.nav ul li ol li dl dd:hover {
  background-color: #940808;
}

.nav ul li ol li dl dd:hover a {
  font-size: 18px;
  color: #ffffff;
}

.nav ul li ol li dl dd:hover p a {
  color: #000;
  text-decoration: none;
  font-size: 16px;
}

.nav ul li ol li dl dd p:hover {
  background-color: #940808;
}

.nav ul li ol li dl dd p:hover a {
  font-size: 18px;
  color: #ffffff;
}

.nav ul ol dl > dd:hover div {
  display: block;
}

@media (max-width: 1760px) {
  .nav ul {
    gap: 20px;
  }
  .nav ul > li {
    max-width: 168px;
  }
  .nav ul li a {
    font-size: 18px;
  }
}
@media (max-width: 1680px) {
  .nav ul {
    gap: 15px;
  }
  .nav ul > li {
    max-width: 162px;
  }
  .nav ul li a {
    font-size: 16px;
  }
}
@media (max-width: 768px) {
  .nav {
    display: none;
  }
}