header {
  background-color: #64B5A2;
  color: #fff;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
}
@media screen and (max-width: 992px) {
  header {
    height: 80px;
  }
}
header > .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
header > .container .logo {
  display: flex;
  align-items: center;
  color: #fff;
  text-decoration: none;
}
header > .container .logo .pic {
  height: 70px;
}
@media screen and (max-width: 1200px) {
  header > .container .logo .pic {
    height: 50px;
  }
}
header > .container .logo .pic img {
  height: 100%;
}
@media screen and (max-width: 992px) {
  header > .container nav {
    position: absolute;
    top: 100%;
    right: 0;
    padding: 30px;
    background-color: #64B5A2;
    width: 100%;
    max-width: 400px;
    height: calc(100vh - 80px);
    transform: translateX(100%);
    transition: transform 0.35s ease-in-out;
    overflow-y: auto;
  }
  header > .container nav.open {
    transform: translateX(0);
    box-shadow: inset 0 1px 6px rgba(0, 0, 0, 0.15);
  }
}
header > .container nav ul {
  display: flex;
  align-items: center;
  gap: 82px;
}
@media screen and (max-width: 1200px) {
  header > .container nav ul {
    gap: 50px;
  }
}
@media screen and (max-width: 992px) {
  header > .container nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 30px;
  }
}
header > .container nav ul li {
  font-weight: bold;
  font-size: 16px;
  line-height: 1.6;
}
header > .container nav ul li .nav-a {
  padding: 0 10px;
  line-height: 5.2083vw;
  cursor: pointer;
  width: 100%;
  color: #fff;
  text-decoration: none;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media screen and (max-width: 1923px) {
  header > .container nav ul li .nav-a {
    line-height: 100px;
  }
}
@media screen and (max-width: 1918px) {
  header > .container nav ul li .nav-a {
    line-height: 5.2083vw;
  }
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .nav-a {
    border-bottom: 1px solid #ffffff;
    padding: 10px 0;
    line-height: 1.6;
  }
}
header > .container nav ul li .nav-a .icon {
  width: 16px;
  display: none;
  transform: rotate(0);
  transition: transform 0.35s ease-in-out;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .nav-a .icon {
    display: block;
  }
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .nav-a.active {
    padding-left: 15px;
  }
}
header > .container nav ul li .nav-a.active .icon {
  transform: rotate(90deg);
}
header > .container nav ul li .nav-a.active:before {
  content: '';
  position: absolute;
  left: 50%;
  top: 70%;
  transform: translate(-50%, -50%) rotate(45deg);
  width: 6px;
  height: 6px;
  background-color: #fff;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .nav-a.active:before {
    left: 0;
    top: 50%;
  }
}
header > .container nav ul li .menu-box {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  min-height: 500px;
  background-color: #64B5A2;
  display: none;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .menu-box {
    position: static;
    display: block !important;
    min-height: auto;
    height: 0;
    overflow: hidden;
    transition: height 0.35s ease-in-out;
  }
}
header > .container nav ul li .menu-box .container {
  border-top: 1px solid #ffffff;
  padding-top: 63px;
  display: flex;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .menu-box .container {
    border-top: none;
    padding-top: 20px;
  }
}
header > .container nav ul li .menu-box .container .tit {
  padding-left: 76px;
  width: 28%;
  font-size: 48px;
  line-height: 1.6;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .menu-box .container .tit {
    display: none;
  }
}
header > .container nav ul li .menu-box .container .menu-list {
  width: 72%;
  display: flex;
  flex-wrap: wrap;
  gap: 0 110px;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .menu-box .container .menu-list {
    flex-direction: column;
    width: 100%;
  }
}
header > .container nav ul li .menu-box .container .menu-list .menu-item {
  font-size: 20px;
  color: #fff;
  text-decoration: none;
  line-height: 2.5;
  width: 33.33%;
  max-width: 342px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
@media screen and (max-width: 992px) {
  header > .container nav ul li .menu-box .container .menu-list .menu-item {
    width: 100%;
    font-size: 14px;
  }
}
header > .container nav ul li .menu-box .container .menu-list .menu-item .icon {
  width: 16px;
  display: block;
  flex-shrink: 0;
  position: relative;
  right: 0;
  transition: right 0.35s ease-in-out;
}
header > .container nav ul li .menu-box .container .menu-list .menu-item:hover span {
  text-decoration: underline;
}
header > .container nav ul li .menu-box .container .menu-list .menu-item:hover .icon {
  right: -4px;
}
header > .container .menu-btn {
  position: relative;
  z-index: 2;
  display: none;
}
@media screen and (max-width: 992px) {
  header > .container .menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
  }
}
header > .container .menu-btn .center-line {
  position: relative;
  width: 25px;
}
header > .container .menu-btn .center-line::after,
header > .container .menu-btn .center-line::before {
  content: '';
  width: 100%;
  height: 2px;
  background-color: #fff;
  display: block;
  transform: rotate(0);
  transition: 0.35s;
}
header > .container .menu-btn .center-line::before {
  position: absolute;
  left: 0;
  top: 0;
}
header > .container .menu-btn::after,
header > .container .menu-btn::before {
  margin-top: 6px;
  content: '';
  width: 100%;
  height: 2px;
  background-color: #fff;
  display: block;
  transition: width 0.35s;
}
header > .container .menu-btn::before {
  margin-top: 0;
  margin-bottom: 6px;
}
header > .container .menu-btn.active .center-line::after {
  transform: rotate(45deg);
}
header > .container .menu-btn.active .center-line::before {
  transform: rotate(-45deg);
}
header > .container .menu-btn.active::after,
header > .container .menu-btn.active::before {
  width: 0;
}
.mask-box {
  position: fixed;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  z-index: 998;
  transform: translateX(100%);
  transition: transform 0.35s ease-in-out;
}
.mask-box.open {
  transform: translateX(0);
}