* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior:smooth;
    scrollbar-width: none;
}
html::-webkit-scrollbar {
    width: 0;
}

.page section {
    width: 100vw;
    height: 100vh;
    background-position: center;
    background-size: cover;
}
.page #beijin {
    background-image: url(img/beijin.png);
}
.page #beijin2 {
    background-image: url(img/beijin2.png);
}
.header {
    position: fixed;
    top: 0;
    width: 100vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, .4);
    backdrop-filter: blur(30px);
    z-index: 3;
}

.header .center {
    height: 50px;
    box-sizing: border-box;
    padding: 20px 45px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}

@media screen and (min-width: 1100px) {
    .header .center {
        width: 1050px;
    }
}
@media screen and (min-width: 900px) and (max-width: 1100px) {
    .header .center {
        width: 900px;
    }
}
@media screen and (max-width: 900px) {
    .header .center {
        width: 100%;
    }
}

.header img {
    width: 100px;
}

.header .links {
    display: flex;
}

@media screen and (min-width: 900px) {
    .header .links {
        padding-right: 10px;
    }

    .header .link {
        color: #ffffff;
        padding: 9px 15px;
        margin-left: 10px;
        border-radius: 2px;
        text-decoration: none;
        transition: background 200ms;
    }

    .header .link:hover {
        background: rgba(255, 255, 255, .2);
    }

    .header .closemenu {
        display: none;
    }

    .header .openmenu {
        display: none;
    }

    .header .menubg {
        display: none;
    }
}

@media screen and (max-width: 900px) {
    .header .links {
        position: fixed;
        top: 0;
        right: -190px;
        width: 180px;
        height: 100vh;
        padding: 0;
        transform: translateX(0);
        flex-direction: column;
        align-items: start;
        background: #313131;
        transition: transform 250ms;
        z-index: 3;
    }

    .header .menuopen .links {
        transform: translateX(-190px);
    }

    .header .link {
        margin: 0;
        padding: 10px 25px;
        width: 100%;
        box-sizing: border-box;
        color: #fff;
        text-decoration: none;
    }
    .header .closemenu {
        all: unset;
        height: 70px;
        width: 100%;
        box-sizing: border-box;
        padding: 20px 25px 20px 25px;
        position: relative;
    }

    .header .closemenu span {
        position: absolute;
        top: 30px;
        left: 35px;
        display: inline-block;
        height: 20px;
        width: 1px;
        background: #fff;
    }

    .header .closemenu .l {
        transform: rotate(45deg);
    }

    .header .closemenu .r {
        transform: rotate(-45deg);
    }

    .header .openmenu {
        all: unset;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        width: 2rem;
        height: 1.5rem;
    }
    .header .openmenu span {
        display: inline-block;
        width: 100%;
        height: 1px;
        background: #000;
    }

    .header .menubg {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 120vh;
        background: rgba(0, 0, 0, .25);
        opacity: 0;
        visibility: hidden;
        transition: opacity 250ms, visibility 0ms 250ms;
    }

    .header .menuopen .menubg {
        opacity: 1;
        visibility: visible;
        transition: opacity 250ms;
    }
}
.sidenav {
     height: 100%;
     width: 0;
     position: fixed;
     z-index: 4;
     top: 0;
     right: 0;
     background:rgba(255, 255, 255, .6);
     overflow-x: hidden;
     transition: 0.5s;
     padding-top: 45px;
     }

      .sidenav a {
      padding: 6px 6px 6px 32px;
      text-decoration: none;
      font-size: 20px;
      color: #FFF ;
      display: block;
      transition: 0.3s;
      }

      .sidenav a:hover {
      color: #f1f1f1;
      }

      .sidenav .closebtn {
      position: absolute;
      top: 0;
      left: 60px;
      font-size: 38px;
      margin-left: 50px;
      }
      @media screen and (max-height: 450px) {
      .sidenav {padding-top: 15px;}
      .sidenav a {font-size: 18px;}
      }
.zhenwen{
  height:250px;
  width:100%
  z-index 2;
  }
     .zhenwen p{
      font-size:25px;
      background: linear-gradient(to right ,#148eff, #b000eb);
      background-clip: text;
      color: transparent;
     }
     .zhenwen img{
       height:32px
       width 18px
       left 20px
       
     }