nav {
  user-select: none;
  position: fixed;
  z-index: 1000000;
  top: 0;
  left: 0;
  background-image: linear-gradient(rgb(0 0 0) 0, rgb(0 0 0) 70%, transparent 100%);;
  padding: 20px min(5%, 50px);
  padding-bottom: 35px;
  width: 100vw;
}

a.brand {
  margin-top: -20px;
  padding-top: 0px;
  height: 65px;
  width: 200px;
  display: block;
  display: flex;
  justify-content: center;
} 

a.brand img {
  height: 100%;
  object-fit: contain;
}











nav > .container {
  position: relative;
  width: 100%;
  height: 24px;
  background-color: black ;
  display: flex;
  justify-content: space-between;
}

nav > .container > .menu-wrap {
  padding-right: 1px;
  font-family: Montserrat-Black, sans-serif;
  font-weight: 200;
  font-size: 2vh;
  display: flex;

}
nav .nav-item {
  position: relative;
}

nav .nav-item > a {
  /* text-transform: uppercase; */
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #cf4770;
  padding: 0 2vw;
  font-size: 2vh;
}





/* 上方原点 */
nav .nav-item > a::before {
  content: "";
  display: block;
  position: absolute;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: rgb(255, 255, 255);
  top: -5px;
  left: 50%;
  transform: translateX(-50%);
  transition: 0.8s;
  opacity: 0;
}
nav .nav-item:hover > a::before {
  opacity: 1;
}





/* 下面文本框 */
nav ul {
  padding-top: 20px;
  padding-bottom: 10px;
  font-family: Montserrat-Semi, sans-serif;
  background:black;
  width: fit-content;
  position: absolute;
  border-radius: 18px;
  top: 85%;
  left: 50%;
  z-index: 10;
  opacity: 0;
  transition: 1s;
  transform: translateX(-50%);
  pointer-events: none;

  align-items: center;
}

nav .nav-item:hover ul {
  opacity: 1;
  padding: 15px 10px;
  padding-bottom: 7px;
  pointer-events: all;
}
nav .nav-item ul li a {
  padding-top: 10px;
  text-wrap: nowrap;
  display: block;
  color: #ffffff;
  font-size: 2vh;
  padding: 7px 7px;
  transition: 0.5s;
  padding-bottom: 5px;

}
nav .nav-item ul li a:hover {
  color: var(--mg);
}






























nav .menu-btn {
  position: relative;
  top: 6px;
  border: 4px solid var(--mg);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  transition: 0.6s;
  transform: rotate(0);
  display: none;
}











nav .menu-btn.show,
nav .menu-btn:hover {
  border: 4px solid var(--y);
}
nav .menu-btn.show:hover {
  border: 4px solid var(--mg);
}
nav .menu-btn.show {
  transform: rotate(405deg);
}









nav .menu-btn::after,
nav .menu-btn::before {
  content: "";
  display: block;
  position: absolute;
  width: 3px;
  height: 80%;
  background-color: var(--mg);
  bottom: 10%;
  left: 45%;
  transition: background-color 1s;
}
nav .menu-btn::after {
  transform: rotate(90deg);
}
nav .menu-btn.show::after,
/* 上方小圆点 */
nav .menu-btn.show::before {
  background-color: white;
}

/* 新东西 */
nav .burger{
  display: none;
}

@media all and (max-width: 700px), all and (max-aspect-ratio: 2/3) {
  #nav {
    width: 100vw;
  }
  #nav .container .menu-wrap {
    position: fixed;
    top: 57px;
    left: 0;
    height: calc(100vh - 55px);
    width: 100vw;
    flex-direction: column;
    background-color: black;
    justify-content: center;
    gap: 3%;
    transform: translateX(-100%);
    transform-origin: left;
    transition: transform 1s ease;
    opacity: 1;
    z-index: 100001;
  }
  /* #nav .container .menu-wrap::before {
    content: "";
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: calc(100vh - 90px);
    background-color: rgba(245, 242, 242, 0.3);
    transform: translateZ(-10px);
    opacity: 0;
    transition: opacity 1s;
  } */
  #nav .container .menu-wrap.show {
    transform: translateX(0);
    opacity: 1;
  }
  /* #nav .container .menu-wrap.show::before {
    opacity: 1;
  } */
  
  nav .nav-item > a {
    /* position: relative; */
    font-size: 4vw;
    padding: 3vh;
  }
  nav .nav-item:hover > a::before {
    opacity: 0;
  }
  nav ul {
    display: flex;
    position: absolute;
    width: fit-content;
    left: 50%;
    transform: translate(-50%, -20%);
    border-radius: 5px;
    flex-direction: row;
    top: 10vh;
    align-items: center;
    margin: auto;
  }
  /* nav .nav-item ul li {
    padding: 10px 30px;
  } */
  nav .nav-item ul li a {
    font-size: 2vw;
  }
  
  nav .menu-btn {
    display: block;
  }

  nav .burger{
    display: block;
    width: 20px;
    height: 6px;
    /* 让底下的三条线基于他相对定位 */
    position: relative;
    /* 自身定位 */
    justify-self: end;
    cursor: pointer;
    top: 10px;
    transform: scale(1.5);
  }

  .burger-line1, 
  .burger-line2, 
  .burger-line3 {
        width: 20px;
        height: 2px;
        background-color: #D63B77;
  } 

  .burger-line1{
    position: absolute;
    top: -6px;
  }

  .burger-line3{
      position: absolute;
      top: 6px;
  }

  .burger.show .burger-line1{
    /* 45度旋转和偏移 */
    transform: rotate(45deg) translate(3px, 5px);
  }

  .burger.show .burger-line2{
      transform: translateX(5px);
      opacity: 0;
  }

  .burger.show .burger-line3{
      transform: rotate(-45deg) translate(3px, -5px)

  }
  
  .burger.show .burger-line1,
  .burger.show .burger-line2,
  .burger.show .burger-line3
  {
    background-color: rgb(249, 215, 225);
    transition: 0.4s ease;
  }
  
  
  
}