/* SECTION
================================================== */
@media only screen and ( max-width : 991px ) {
  #h_nav {
    /*margin: 0 0 2.5em;*/
    width: 100%;
    position: fixed;
    top: 50px;
    left: 0;
    background: #002542;
    z-index: 999;
    max-height: 100vh;
    overflow-y: auto;
  }
  #h_nav {
    display: none;
  }
  #h_nav .nav {
    /*padding: 40px 0;*/
  }
  #h_nav .nav li {
      border-bottom: 1px solid rgba(0,0,0,.2);
      width: 100%;
  }
  #h_nav .nav li:last-child {
    border-bottom: none;
  }

  #h_nav .nav li a {
      display: block;
      padding: 20px;
      color: #fff;
  }
  #h_nav .nav .sub {
    background: rgba(0,0,0,.08);
  }

  .target {
    background-color: #ddd;
    display: none;
  }
  .target .active a {
    background-color: #161b1d;
  }
  .target .active a:hover {
    background-color: #2c363a !important;
  }
  .target .active a:before {
    background-color: #f50057 !important;
  }
  #h_nav .nav .active a {
    background-color: #ddd;
  }
  #h_nav .nav .active a:hover {
    background-color: #ffa5a5 !important;
  }
  #h_nav .nav li .sub li:last-child {
      border-bottom: none;
  }
  #h_nav .nav li .sub li a {
      /*padding-left: 2em;*/
      color: #ccc;
  }



  /* BUTTON
  ================================================== */
  .btn_hamburger {
      /*margin: 0 auto 2em !important;*/
      width: 55px;
      position: fixed;
      right: 0;
      top: 0;
      z-index: 100;
      background: #002542;
      padding: 14px 12px;
      /*border:1px solid #fff;*/
  }
  /*.btn_hamburger:after {
    content: "メニュー";
    position: absolute;
    top: 40px;
    font-size: 9px;
    left: 0;
    width: 55px;
    text-align: center;
    color: #fff;
  }*/
  .btn_hamburger a {
      position: relative;
      display: block;
      height: 22px;
      -webkit-transition: all .4s;
      transition: all .4s;
      box-sizing: border-box;
  }
  .btn_hamburger span {
      position: absolute;
      display: inline-block;
      left: 0;
      width: 100%;
      height: 2px;
      background-color: #fff;
      border-radius: 2px;
      -webkit-transition: all .4s;
      transition: all .4s;
      box-sizing: border-box;
  }
  .btn_hamburger span:nth-of-type(1) {
      top: 0;
  }
  .btn_hamburger span:nth-of-type(2) {
      top: 10px;
  }
  .btn_hamburger span:nth-of-type(3) {
      bottom: 0;
  }
  .btn_hamburger span:nth-of-type(2)::after {
      position: absolute;
      top: 0;
      left: 0;
      content: '';
      width: 100%;
      height: 2px;
      background-color: #fff;
      border-radius: 2px;
      -webkit-transition: all .4s;
      transition: all .4s;
  }
  .btn_hamburger .active span:nth-of-type(2) {
      -webkit-transform: rotate(-45deg);
      -ms-transform: rotate(-45deg);
      transform: rotate(-45deg);
  }
  .btn_hamburger .active span:nth-of-type(2)::after {
      -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
      transform: rotate(90deg);
  }
  .btn_hamburger .active span:nth-of-type(1) {
      -webkit-transform: translateY(20px) scale(0);
      -ms-transform: translateY(20px) scale(0);
      transform: translateY(20px) scale(0);
  }
  .btn_hamburger .active span:nth-of-type(3) {
      -webkit-transform: translateY(-20px) scale(0);
      -ms-transform: translateY(-20px) scale(0);
      transform: translateY(-20px) scale(0);
  }
}