/* ==========================================
   阿甘达机械 全站统一顶部导航
   ========================================== */

.header{
  width:100%;
  background:#fff;
  position:relative;
  z-index:100;
}

.header-main{
  min-height:98px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:40px;
}

.brand{
  flex:0 0 auto;
  display:flex;
  align-items:center;
  min-width:280px;
  text-decoration:none;
}

.brand-mark{
  flex:0 0 auto;
}

.brand-text{
  margin-left:14px;
  white-space:nowrap;
}

.brand-text strong{
  display:block;
  white-space:nowrap;
}

.brand-text span{
  display:block;
  white-space:nowrap;
}

.nav{
  flex:1 1 auto;
  min-width:0;

  display:flex;
  align-items:center;
  justify-content:flex-end;

  gap:0;

  white-space:nowrap;
}

.nav > a,
.nav .nav-item > a,
.nav-main-link{
  display:flex;
  align-items:center;
  justify-content:center;

  flex:0 0 auto;

  height:98px;
  padding:0 17px;

  color:#18354c;
  text-decoration:none;

  white-space:nowrap;

  font-size:15px;

  position:relative;
}

.nav > a:hover,
.nav .nav-item > a:hover,
.nav-main-link:hover{
  color:#176da4;
}

.nav > a.active,
.nav .nav-item > a.active,
.nav-main-link.active{
  color:#176da4;
}

.nav > a.active::after,
.nav .nav-item > a.active::after,
.nav-main-link.active::after{
  content:"";

  position:absolute;

  left:17px;
  right:17px;
  bottom:0;

  height:3px;

  background:#176da4;
}

.nav-item{
  position:relative;
  flex:0 0 auto;
}

.menu-button{
  display:none;
}


/* ==========================================
   顶部服务热线
   ========================================== */

.topbar{
  width:100%;
}

.topbar-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  min-height:36px;
}


/* ==========================================
   电脑端
   ========================================== */

@media(min-width:901px){

  .nav{
    padding-left:20px;
  }

}


/* ==========================================
   平板
   ========================================== */

@media(max-width:1100px) and (min-width:901px){

  .header-main{
    gap:15px;
  }

  .brand{
    min-width:240px;
  }

  .nav > a,
  .nav .nav-item > a,
  .nav-main-link{
    padding-left:10px;
    padding-right:10px;
    font-size:14px;
  }

  .nav > a.active::after,
  .nav .nav-item > a.active::after,
  .nav-main-link.active::after{
    left:10px;
    right:10px;
  }

}


/* ==========================================
   手机端
   ========================================== */

@media(max-width:900px){

  .header-main{
    min-height:76px;
    gap:10px;
  }

  .brand{
    min-width:0;
  }

  .brand-text strong{
    font-size:18px;
  }

  .brand-text span{
    font-size:11px;
  }

  .menu-button{
    display:flex;
    width:42px;
    height:42px;

    align-items:center;
    justify-content:center;

    border:0;
    background:#176da4;
    color:#fff;

    font-size:22px;
    cursor:pointer;
  }

  .nav{
    display:none;
  }

  .nav.open{
    display:flex;

    position:absolute;

    top:100%;
    left:0;
    right:0;

    flex-direction:column;
    align-items:stretch;

    padding:10px 0;

    background:#fff;

    box-shadow:
      0 8px 20px rgba(0,0,0,.12);
  }

  .nav > a,
  .nav .nav-item > a,
  .nav-main-link{
    width:100%;
    height:48px;

    justify-content:flex-start;

    padding:0 25px;
  }

  .nav > a.active::after,
  .nav .nav-item > a.active::after,
  .nav-main-link.active::after{
    display:none;
  }

}