/*setting*/
body{
    overflow-y: initial!important;
}
/*layout*/
.l-intro{
    height: 0;
}
.l-intro__canvas{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* height: auto; */
    object-fit: cover;
}
.l-intro__control{
    width: 100%;
    height: 100%;
    max-height: 100vh;
    position: relative;
    z-index: 2;
}
/*component*/
.c-intro__text01{
    font-size: 51px;
    font-weight: bold;
    position: absolute;
    bottom: 175px;
    left: 0;
    line-height: 1.7;
    transform: translate(0,50%);
    color: #000;
    white-space: nowrap;
    letter-spacing: .065em;
    transition: opacity .5s,visibility .5s,color .5s;
    
    opacity: 0;
    visibility: hidden;
}
.c-intro__text02,
.c-intro__text03{
    font-size: 51px;
    font-weight: bold;
    position: absolute;
    bottom: 50%;
    left: 50%;
    line-height: 1.7;
    transform: translate(-50%,130%);
    color: #000;
    white-space: nowrap;
    text-align: center;
    letter-spacing: .065em;
    transition: opacity .5s,visibility .5s,color .5s;

    opacity: 0;
    visibility: hidden;
}
.c-intro__text01.is-active,
.c-intro__text02.is-active,
.c-intro__text03.is-active{
    opacity: 1;
    visibility: visible;
}
.c-skip{
    position: absolute;
    right: 80px;
    bottom: 32px;
    color: #2d2d2d;
    font-size: 12px;
    cursor: pointer;
    transition:color .2s;

    opacity: 0;
    visibility: hidden;
}
.c-skip:hover{
    color: #00A9E0;
}
.c-scroll{
    display: flex;
    align-items: center;
    position: absolute;
    bottom: 32px;
    right: 49.5%;
    font-size: 12px;
    font-weight: bold;
    writing-mode: vertical-rl;
    line-height: 1;
    transform: rotate(180deg) translate(-50%,0);

    background:linear-gradient(to bottom,#00A9E0,#78BE20,#888,#00A9E0,#78BE20,#888);
    background-size: 100% 600%;
    background-clip: text;
    -webkit-background-clip: text;
    color: transparent;

    animation: AnimationScroll 15s linear infinite;

    opacity: 0;
    visibility: hidden;
}
.c-scroll::before{
    content: '';
    display: inline-block;
    width: 1px;
    height: 35px;
    background:linear-gradient(to bottom,#00A9E0,#78BE20,#888);
    background-size: 100% 100%;
    margin-bottom: 20px;
    animation: pathMove 2s ease-in-out infinite;
    transform-origin: top center;
}

/*animation*/
@keyframes AnimationScroll {
    0%{background-position: 50% 0%;}
    100%{background-position: 50% 300%;}
}

/*高さ・位置・透過が変化して線が上から下に動く*/
@keyframes pathMove{
    0%{
      transform:translate(-100%,60px) scaleY(0);
      opacity: 0;
    }
    40%{
        transform:translate(-100%,0px) scaleY(1);
        opacity: 1;
        transform-origin: bottom center;
    }
    100%{
    transform:translate(-100%,-30px) scaleY(0);
      opacity: 0;
    }
  }

/*responsive*/
@media screen and (min-width : 769px) {
    .l-topPage .js-hidden-element{
        opacity: 0;
        visibility: hidden;
    }
    .l-topPage .js-hidden-area{
        opacity: 0;
        visibility: hidden;
        position: absolute;
        top: 0;
        height: 0;
    }
    .l-topPage .js-hidden-area.l-footer{
        top: -100%;
    }
    .l-intro__copy{
        will-change: opacity;
    }
    .l-main.is-overFlow--hidden{
        height: 100vh;/*画面縦幅が:770px以下のデバイス対策*/
        overflow: hidden;
    }
 <!--
    .l-intro::after{
        content: '';
        display: block;
        position: absolute;
        bottom: -55px;
        left: 0;
        width: 100%;
        background: linear-gradient(to bottom,rgba(255,255,255,0) 0%,white 100%);
        height: 35px;
        opacity: 0;
        visibility: hidden;
        transition:opacity visibility .25s;
    }
 -->

    .l-intro.is-mask::after{
        opacity: 1;
        visibility: visible;
    }

}
/*pc button*/
/*
@media screen and (min-width : 769px) {
    .l-intro__button{
        transform: translate(-5px,-270px);
        will-change: transform;
    }
 }

@media screen and (min-width : 800px) {
    .l-intro__button{
        transform: translate(-5px,-220px);
        will-change: transform;
    }
 }

@media screen and (min-width : 900px) {
    .l-intro__button{
        transform: translate(-56px,-170px);
        will-change: transform;
    }
 }

@media screen and (min-width : 1100px) {
    .l-intro__button{
        transform: translate(-56px,-100px);
        will-change: transform;
    }
 }

@media screen and (min-width : 1300px) {
    .l-intro__button{
        transform: translate(-56px,0px);
        will-change: transform;
    }
 }
@media screen and (min-width : 1400px) {
    .l-intro__button{
        transform: translate(-56px,40px);
        will-change: transform;
    }
 }
@media screen and (min-width : 1500px) {
    .l-intro__button{
        transform: translate(-56px,70px);
        will-change: transform;
    }
 }
@media screen and (min-width : 1920px) {
    .l-intro__button{
        transform: translate(-56px,70px);
        will-change: transform;
    }
 }
*/
/*pc button end*/

@media screen and (max-width : 1535px)  {
    .c-intro__text01{
        font-size:max(calc(calc(51/1535) * 100vw),32px);
    }
}
@media screen and (max-width : 1220px)  {
    .c-intro__text02,
    .c-intro__text03{
        font-size: 40px;
    }
}
@media screen and (max-width : 1119px)  {
    .l-intro__inner{
        padding-top: 0;
    }
}

@media screen and (max-width : 900px)  {
    .c-intro__text02,
    .c-intro__text03{
        font-size: 32px;
    }
}

@media screen and (max-width : 768px)  {
    .l-intro__canvas{
        display: none;
    }
    .c-intro__text01,
    .c-intro__text02,
    .c-intro__text03{
        display: none;
    }
/*
    .l-intro__button{
        transform: translateY(-170px);
        will-change: transform;
    }
*/
}