body {
    background: #000 !important;
}
.language {
    text-align: right;
}
header {
    padding: 28px 0;
}
h1 {
    color: #fff;
    font-family: 'Arial';
    font-weight: bold !important;
    font-size: 48px !important;
    line-height: 48px !important;
    max-width: 770px;
    margin: auto;
}
h1 span {
    color: #ff9900;
}
section.intro {
    text-align: center;
    padding-top: 24px;
    padding-bottom: 70px;
}

.intro-box p, .content-box p {
    text-align: left;
    color: #919191;
    font-family: 'Arial';
    font-size: 16px;
}
a {
    color: #ff9900 !important;
}
a:hover {
    color: #ff9900 !important;
}
a.visit-btn {
    color: #000 !important;
    background: #ff9900;
    padding: 20px 37px;
    font-size: 14px;
    text-decoration: none;
    font-family: 'Arial';
    font-weight: bold;
    border-radius: 5px;
}
a.visit-btn:hover {
    background: #fff;
    text-decoration: none !important;
}
section.full-banner img {
    width: 100%;
    object-fit: contain;
}
.content-box, .intro-box {
    max-width: 764px;
    margin: 49px auto 70px;
}
.content-box h2 {
    font-family: 'Arial';
    font-size: 16px;
    font-weight: bold;
    color: #ff9900;
    margin-bottom: 30px;
}
footer {
    border-top: 1px solid #303030;
}
.copyright p {
    text-align: center;
    font-family: 'Arial';
    font-size: 16px;
    color: #fff;
    margin-top: 16px;
}
.mobile {
    display: none;
}

@media (max-width: 768px){
    h1{
        font-size: 48px !important;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 44px !important;
        line-height: 44px !important;
    }
    h1 span {
        color: #ff9900;
    }
    a.visit-btn {
        width: 100%;
        display: block;
    }
    .intro-box {
        padding: 0;
    }
    .mobile {
        display: block;
    }
    .desktop {
        display: none;
    }
    header .row .col-md-6 {
        width: 50%;
    }
    header .row {
        align-items: center;
    }
    .logo img {
        height: 25px;
        width: auto;
        object-fit: contain;
    }
    section.intro {
        padding-top: 22px;
        padding-bottom: 50px;
    }
    .content-box {
        margin: 50px auto;
    }
    .intro-box {
        margin: 42px auto 50px;
    }
}

@media (max-width: 375px) {
    h1 {
        font-size: 35px !important;
        line-height: 38px !important;
    }
    h1 span {
        color: #ff9900;
        font-size: 38px;
    }
}

.language {
    position: relative;
    text-align: right;
}

.langu {
    display: none;
    position: absolute;
    right: 0;
    z-index: 999;
}

.language:hover .langu {
    display: block !important;
}

.langu a {
    display: block;
    margin-top: 10px;
    padding-right: 0px;
}
/* 動画を画面幅に合わせる（スマホ対応） */
video {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
}

/* デスクトップとモバイルで切り替え */
video.desktop {
  display: block;
}

video.mobile {
  display: none;
}

/* 画面幅が768px以下（スマホ）の場合 */
@media (max-width: 768px) {
  video.desktop {
    display: none;
  }
  video.mobile {
    display: block;
  }
  .full-banner {
    padding: 0;
  }
}