:root{
  --background: rgba(0,0,0);          /*主页面背景色*/
  --manu-back: linear-gradient(to left, #c1dfc4 0%, #deecdd 100%);         
  --manu-text: #333b28;         
  --manu-text-hover-back: #b1ccb4;      /*选项悬停背景*/
  --manu-text-text-hover: rgba(0,68,116);         /*文字悬停*/
  --down-manu-back: #c1dfc4;  /*下拉菜单背景*/
  --sidebar-background:rgba(0,0,0);               /*侧边栏背景*/
  --sidebar-text:rgba(0,0,0);                     /*侧边栏文字*/
  --sidebar-text-hover-back:rgba(0,0,0);          /*侧边选项悬停*/
  --sidebar-hover-text:rgba(0,0,0);               /*侧边文字悬停*/
  --article-background:rgba(0,0,0);                  /*文章背景*/

  --color-primary: #0073ff;
  --color-white: #ffffff;
  --color-white-1:#e9e9e9;
  --color-black: #141d28;
  --color-black-1: #212b38;
  --color-green-1:#549686;
  --color-green-2:#48c1ab;

}  


.triangle-down2{
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-top: 10px solid rgb(0, 0, 0);
  border-radius: 20%;
}

.menu{
  position: sticky;
  transition: top 1s ease-in-out;
  top: 0px;
  background: linear-gradient(to left, #c1dfc4 0%, #deecdd 100%);
  width: 100%;
  z-index: 1000;
}

.menu.die{
  top: -100%;
}

  
.menu-container{
  height: 60px;
  max-width: 65rem;
  padding: 0 2rem;
  margin: 0 auto;
  display: flex;
  position: relative;
}

.menu-container a{
  font-size: 18px;
  text-decoration: none;
}

.logo-container{
  flex: 1.5;
  display: flex;
  align-items: center;
}





.nav-btn{
  flex: 5;
  align-items: center;
  display: flex;
  z-index: 1000;
}

.nav-links{
  flex: 4;
}


.btn{
  display: inline-block;
  padding: .5rem 1.3rem;
  font-size: .8rem;
  border: 2px solid #fff;
  border-radius: 2rem;
  line-height: 1;
  margin: 0 .2rem;
  transition: .3s;
  text-transform: uppercase;
}

.btn.solid, .btn.transparent:hover{
  background-color: #fff;
  color: var(--manu-back);
}

.btn.transparent, .btn.solid:hover{
  background-color: transparent;
  color: #fff;
}

.nav-links > ul{
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.nav-link{
  position: relative;
}

.nav-link > a{
  line-height: 3rem;
  color: #333b28;
  padding: 0 .8rem;
  letter-spacing: 1px;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: .5s;
}

.nav-link > a > i{
  margin-left: .2rem;
}

.nav-link:hover > a{
  background-color: var(--manu-text-hover-back);
  border-radius:10px ;
  color: var(--manu-text);
}

.dropdown{
  position: absolute;
  top: 100%;
  left: 0;
  width: 10rem;
  border-radius: 10px;
  transform: translateY(10px);
  opacity: 0;
  pointer-events: none;
  transition: .5s;
  z-index: 999;
}

.dropdown ul{
  position: relative;
  border-radius: 10px;
  background-color: var(--down-manu-back);

  
}

.dropdown-link > a{
  display: flex;
  color: var(--manu-text);
  padding: .5rem 1rem;
  font-size: .9rem;
  align-items: center;
  justify-content: space-between;
  transition: .3s;
}

.dropdown-link:hover > a{
  background-color: var(--manu-text-hover-back);
  color: var(--manu-text);
  border-radius: 10px;
}

.dropdown-link:not(:nth-last-child(2)){
  border-bottom: 1px solid #efefef;
}

.dropdown-link i{
  transform: rotate(-90deg);
}

.arrow{
  position: absolute;
  width: 11px;
  height: 11px;
  top: -5.5px;
  left: 32px;
  background-color: var(--down-manu-back);
  transform: rotate(45deg);
  cursor: pointer;
  transition: .3s;
  z-index: -1;
}

.dropdown-link:first-child:hover ~ .arrow{
  background-color: var(--down-manu-back);
}

.dropdown-link{
  position: relative;
}

.dropdown.second{
  top: 0;
  left: 100%;
  padding-left: .8rem;
  cursor: pointer;
  transform: translateX(10px);
}

.dropdown.second .arrow{
  top: 10px;
  left: -5.5px;
}

.nav-link:hover > .dropdown,
.dropdown-link:hover > .dropdown{
  transform: translate(0, 0);
  opacity: 1;
  pointer-events: auto;
}

.hamburger-menu-container{
  flex: 1;
  display: none;
  align-items: center;
  justify-content: flex-end;
}

.hamburger-menu{
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.hamburger-menu div{
  width: 1.6rem;
  height: 3px;
  border-radius: 3px;
  background-color: #fff;
  position: relative;
  z-index: 1001;
  transition: .5s;
}

.hamburger-menu div:before,
.hamburger-menu div:after{
  content: '';
  position: absolute;
  width: inherit;
  height: inherit;
  background-color: #fff;
  border-radius: 3px;
  transition: .5s;
}

.hamburger-menu div:before{
  transform: translateY(-7px);
}

.hamburger-menu div:after{
  transform: translateY(7px);
}

#check{
  position: absolute;
  top: 50%;
  right: 1.5rem;
  transform: translateY(-50%);
  width: 2.5rem;
  height: 2.5rem;
  z-index: 90000;
  cursor: pointer;
  opacity: 0;
  display: none;
}

#check:checked ~ .hamburger-menu-container .hamburger-menu div{
  background-color: transparent;
}

#check:checked ~ .hamburger-menu-container .hamburger-menu div:before{
  transform: translateY(0) rotate(-45deg);
}

#check:checked ~ .hamburger-menu-container .hamburger-menu div:after{
  transform: translateY(0) rotate(45deg);
}


@keyframes animation{
  from{
      opacity: 0;
      transform: translateY(15px);
  }
  to{
      opacity: 1;
      transform: translateY(0px);
  }
}

@media (max-width: 920px){
  .hamburger-menu-container{
      display: flex;
  }

  #check{
      display: block;
  }

  .nav-btn{
      position: fixed;
      height: calc(100vh - 3rem);
      top: 3rem;
      left: 0;
      width: 100%;
      background-color: var(--manu-back);
      flex-direction: column;
      align-items: center;
      justify-content: space-between;
      overflow-x: hidden;
      overflow-y: auto;
      transform: translateX(100%);
      transition: .65s;
  }

  #check:checked ~ .nav-btn{
      transform: translateX(0);
  }

  #check:checked ~ .nav-btn .nav-link,
  #check:checked ~ .nav-btn .log-sign{
      animation: animation .5s ease forwards var(--i);
  }

  .nav-links{
      background: linear-gradient(to left, #c1dfc4 0%, #deecdd 100%);
      flex: initial;
      width: 100%;
  }

  .nav-links > ul{
      flex-direction: column;
  }

  .nav-link{
      width: 100%;
      opacity: 0;
      transform: translateY(15px);
  }

  .nav-link > a{
      line-height: 1;
      padding: 1.6rem 2rem;
  }

  .nav-link:hover > a{
      transform: scale(1);
      background-color: #b1ccb4;
  }

  .dropdown, .dropdown.second{
      position: initial;
      top: initial;
      left: initial;
      transform: initial;
      opacity: 1;
      pointer-events: auto;
      width: 100%;
      padding: 0;
      background-color: #b1ccb4;
      display: none;
  }
  
  .nav-link:hover > .dropdown,
  .dropdown-link:hover > .dropdown{
      display: block;
  }

  .nav-link:hover > a > i,
  .dropdown-link:hover > a > i{
      transform: rotate(360deg);
  }

  .dropdown-link > a{
      background-color: transparent;
      color: var(--manu-text);
      padding: 1.2rem 2rem;
      line-height: 1;
  }

  .dropdown.second .dropdown-link > a{
      padding: 1.2rem 2rem 1.2rem 3rem;
  }

  .dropdown.second .dropdown.second .dropdown-link > a{
      padding: 1.2rem 2rem 1.2rem 4rem;
  }

  .dropdown-link:not(:nth-last-child(2)){
      border-bottom: none;
  }

  .arrow{
      z-index: 1;
      background-color: var(--manu-back);
      left: 10%;
      transform: scale(1.1) rotate(45deg);
      transition: .5s;
  }

  .nav-link:hover .arrow{
      background-color: #b1ccb4;
  }

  .dropdown .dropdown .arrow{
      display: none;
  }

  .dropdown-link:hover > a{
      background-color: #b1ccb4;
  }

  .dropdown-link:first-child:hover ~ .arrow{
      background-color: #b1ccb4;
  }

  .nav-link > a > i{
      font-size: 1.1rem;
      transform: rotate(-90deg);
      transition: .7s;
  }

  .dropdown i{
      font-size: 1rem;
      transition: .7s;
  }
}