.container { color: #FFF;}
.key {
    width: 100%;
    margin-bottom: 60px;
}

    .container {
        width: 100%!important;
    max-width: 100%!important;
}

.tit_B {text-align: center;position: relative;max-width: 80%;margin: 0 auto 30px;}

.tit_B::before,.tit_B::after {
     content: '';
     position: absolute;
     top: 50%;
     display: inline-block;
     width: 40px;
     height: 1px;
     background-color: #fff;
}
.tit_B::before {
    left: 0;
}
.tit_B::after {
    right: 0;
}
.tit_B p {font-size: 20px; line-height: 1.2;}
.tit_B span {
    font-size: 18px;
    align-items: center; /* 横線を上下中央 */
  display: flex; /* 文字と横線を横並び */
  justify-content: center;  
}

.tit_B span::before,.tit_B span::after {
    background-color: #FFF; /* 横線の色 */
  content: "";
  height: 2px; /* 横線の高さ */
  width: 5px; /* 横線の長さ */
}
.tit_B span::before {
    margin-right: 1px
}
.tit_B span::after {
    margin-left: 1px
}

.main-text {font-size: 12px;text-align: center; width: 90%; margin: 0 auto 60px}
.box_1050 { max-width: 90%; margin: auto;}
.box_1050 li { margin-bottom: 20px;font-size: 12px;}
.box_1050 li.en {font-size: 11px;color: #FFF!important;}

.video {
  width: 100%;
  position: relative;
  padding-top: 56.25%;
    margin-bottom: 60px;
}

.video iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.maintenance-block { margin-bottom: 40px; overflow: hidden;}
.box_1050 { margin-bottom: 80px; overflow: hidden;}

@media screen and (min-width: 964px){
.key {
    margin-bottom: 120px;
}
    
    .container {
        width: 100%!important;
    max-width: 100%!important;
}
    
    .tit { margin-bottom: 100px!important;}
    .tit_B {margin: 0 auto 50px;max-width: 454px;}
    .tit_B::before,.tit_B::after {
     width: 94px;
}

  .video_wrapper { max-width: 1200px; margin: auto;}
    
    .maintenance-block { margin-bottom: 80px; }
    
    .main-text {  margin-bottom: 100px; line-height: 2;letter-spacing: 2px; font-size: 16px;}
    .video { margin-bottom: 100px;}
    
    .box_1050 { margin-bottom: 100px;max-width: 1050px;
      margin: auto;}
    .box_1050 {
    display: flex;
    flex-wrap: wrap;
    gap: 4%;
}
    .box_1050 li {width: 48%; margin-bottom: 85px;line-height: 2.2;letter-spacing: 1.8px;}

.box_1050 li.en {letter-spacing: 0.7px;line-height: 2.1;}
    .box_1050 li img { margin-top: 0.5em;}
}