header{
    position: fixed;
    width: 100vw;
    height: 70px;
    z-index: 100;
}
header .logo{
    margin: 20px;
    max-width: 227px;
}
header .logo img{
    width: 100%;
    max-width: 227px;
}

@media (max-width: 767px) {
    header .logo{
		margin: 10px auto;
		max-width: 165px;
    }
}

/*ドロワーメニュー*/

/*ボタン*/
header .btn_menu{
    position: fixed;
    right: 30px;
    top: 57px;
    width: 68px;
    height: 20px;
    border: 0;
    padding: 3px;
    background: none;
    box-sizing: content-box;
    outline: none;
    font-size: 1.5rem;
    letter-spacing: 0.01em;
}
header .btn_menu .sandwich {
    position: relative;
    width: 100%;
    display: block;
    text-align: left;
    color: #000;
    cursor: pointer;
}
header .btn_menu .sandwich::before,
header .btn_menu .sandwich::after {
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    display: block;
    position: absolute;
    right: 0;
    width: 18px;
    height: 2px;
    content: "";
    background-color: #000;
    transition: all 0.8s ease-in-out;
}
header .btn_menu .sandwich::before {
    top: 5px;
}
header .btn_menu .sandwich::after {
    top: 13px;
}

@media (max-width: 767px) {
    header .btn_menu{
        right: auto;
        left: 10px;
        top: 10px;
        width: 30px;
        height: 30px;
        padding: 5px;
        box-sizing: border-box;
    }
    header .btn_menu .sandwich{
        height: 100%;
    }
    header .btn_menu .sandwich::before,
    header .btn_menu .sandwich::after{
        width: 100%;
        background: #FFF;
    }
    header .btn_menu .sandwich .sp_none{
        display: none;
    }
}

/*カバー*/
.overlay {
    display: none;
    position: fixed;
    z-index: 99;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: .3s ease-in-out;
}
.overlay.nav-close{
    display: block;
    opacity: 0;
}

/*白の場合*/
header .btn_menu .sandwich.white{
    color: #FFF;
}
header .btn_menu .sandwich.white::before,
header .btn_menu .sandwich.white::after {
    background-color: #FFF;
}

/*メニュー*/
header nav {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 80%;
    max-width: 470px;
    height: 100vh;
    padding-bottom: 150px;
    padding-left: 5%;
    box-sizing: border-box;
    transition: all 0.3s;
    position: fixed;
    top: 0;
    z-index: 1000;
    background-color: rgba(0,0,0,0.73);
    color: #FFF;
    overflow-y: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
header nav::-webkit-scrollbar {
    display:none;
}
header nav a{
    color: #FFF;
    line-height: 1.2;
	display: inline-block;
}
header nav ul{
    margin: 0;
    padding: 0;
}
header nav .accordion{
    margin-bottom: 50px;
}
header nav .accordion,
header nav .bottom_box .link_list{
    font-size: 1.1rem;
    letter-spacing: 0.3em;
}
header nav .accordion > li{
    padding: 11px;
}
header nav .accordion .ac_title{
    cursor: pointer;
    margin: 0;
    transition: 0.3s;
}
header nav .accordion .ac_title:hover{
    opacity: 0.6;
    text-decoration: underline;
}
header nav .accordion .inner {
    display: none;
    margin-top: 10px;
    padding-left: 20px;
}
header nav .accordion .inner li{
    border-left: 1px solid #8E8E8E;
    padding: 10px 13px;
}
header nav .bottom_box .link_list li{
    padding: 10px 0;
}
header nav .bottom_box .link_list li.autec-camp img{
	width: 74px;
}
header nav .bottom_box .link_list li a img[src="/pc/images/audio-technica-MIMIO-logo-white.svg"],
header nav .bottom_box .link_list li.mimio-logo img{
	width: 115px !important;
	height: auto;
}
header nav .bottom_box{

}
header nav .bottom_box .other_list{
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    margin: 3em 0;
}

@media (max-width: 767px) {
    header nav {
        padding-top: 54px;
        left: 0;
        transform: translate(-100%);
        padding-left: 30px;
    }
    header nav.open {
        transform: translate(0);
    }
    header nav .accordion > li {
        padding: 11px 9px;
    }
    header nav .bottom_box .other_list li{
        padding: 0.7em 0;
        font-size: 0.9rem;
    }
    header nav .bottom_box .other_list li:last-child{
        margin-top: 1em;
    }
}
@media (min-width: 768px) {
    header nav {
        padding-top: 120px;
        right: 0;
        transform: translate(470px);
    }
    header nav.open {
        transform: translate(20px);
    }
    header nav .bottom_box .other_list li{
        padding: 0.5em;
    }
}
/*SNS*/
header nav .bottom_box .sns_list{
    display: flex;
    display: -webkit-box;
}
header nav .bottom_box .sns_list li{
    margin-right: 1em;
}
header nav .bottom_box .sns_list li .fab {
    font-size: 20px;
}
/*閉じるボタン*/
header nav .btn_close{
    position: absolute;
    right: 30px;
    top: 54px;
    width: 30px;
    height: 30px;
    border: 0;
    padding: 0;
    background: none;
    outline: none;
}
@media (max-width: 767px) {
    header nav .btn_close{
        left: 15px;
        top: 12px;
    }
}
@media (min-width: 768px) {
    header nav .btn_close{
        right: 30px;
        top: 54px;
    }
}
header nav .btn_close .close_icon{
    display: inline-block;
    width: 30px;
    height: 30px;
    position: relative;
    border: 1px solid rgba(0,0,0,.1);
    cursor: pointer;
    transition: 0.3s;
}
header nav .btn_close .close_icon::before,
header nav .btn_close .close_icon::after{
    display: block;
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 84%;
    height: 5%;
    margin: -8% 0 0 -42%;
    background: #FFF;
}
header nav .btn_close .close_icon::before {
    transform: rotate(-45deg);
}
header nav .btn_close .close_icon::after {
    transform: rotate(45deg);
}