@charset "UTF-8";

/*mainvisual*/
#mainvisual{
    min-height:100vh;
    width: 100%;
    padding:70px 0 10px;
    margin-bottom:100px;
    position:relative;
}
.catch{
    margin:30vh 0 40px;
    font-size:2.5rem;
}
.catch-en{
    display: inline-block;
}

.background li{/*ここから背景切り替えアニメーション*/
    position: absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    opacity: 0;
    z-index:-1;
    animation:change 21s infinite;
}
@keyframes change{
    0%{ opacity: 0; }
    8%{ opacity: 1; }
    32%{ opacity: 1; }
    40%{ opacity: 0; }
    100%{ opacity: 0; }
}
.background li:nth-of-type(1){
    animation-delay: -2s;
}
.background li:nth-of-type(2){
    animation-delay: 5s;
}
.background li:nth-of-type(3){
    animation-delay: 12s;
}
.background img{
    width:100%;
    height:100%;
    object-fit: cover;
    object-position: bottom right;
}




/*comment*/
.comment{
    display: flex;
    align-items: baseline;
    gap:10px;
    margin-bottom:100px;
}
.sub{
    font-size:1.25rem;
}
.sub-en{
    font-size: 0.875rem;;
}

/*works*/
#works{
    margin-bottom:100px;
}
.slider{
    margin-bottom:60px;
}
.slider img{
    width:100%;
}
.btn{
    text-align: center;
}
.frame{
    display: inline-block;
    position:relative;
    background:pink;
}
.btn a{
    background-color:var(--blue);
    display: inline-block;
    padding:15px 50px;
    font-size:1.125rem;
    font-weight: 500;
    color:#fff;
    transition:all 0.3s ease;
}
.btn a:hover{
    background-color:#f7f6f4;
    color:var(--blue);
    transition-delay:0s;
}
/*frameが上と右、.btn aが下と左*/
.frame::before,  .frame::after, .btn a::before, .btn a::after{
    position: absolute;
    content:"";
    background:var(--blue);
    transition: transform 0.3s linear;
}
.frame::before{
    width:100%;
    height:1px;
    top:0;
    left:0;
    transform:scaleX(0);
    transform-origin: top left;
    transition: transform 0.2s linear;
}
.frame:hover::before{
    transform:scaleX(1);
    transition-delay: 0s;
}
.frame::after{
    width:1px;
    height:100%;
    top:0;
    right:0;
    transform: scaleY(0);
    transform-origin: top right;
    transition: transform 0.1s linear;
}
.frame:hover::after{
    transform:scaleY(1);
    transition-delay: 0.2s;
}
.btn a::before{
    width:100%;
    height:1px;
    bottom:0;
    right:0;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform 0.2s linear;
}
.btn a:hover::before{
    transform: scaleX(1);
    transition-delay: 0.3s;
}
.btn a::after{
    width:1px;
    height:100%;
    bottom:0;
    left:0;
    transform: scaleY(0);
    transform-origin: bottom left;
}
.btn a:hover::after{
    transform: scaleY(1);
    transition-delay: 0.5s;
}

/*topic*/
#topic{
    margin-bottom:120px;
}
.topic-content{
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    margin-bottom:60px;
    row-gap: 30px;
}
.topic-content article{
    width:22%;
}
.topic-content a{
    transition:opacity 0.2s;
}
.topic-content a:hover{
    opacity: 0.7;
}
.topic-content img{
    width:50%;
    aspect-ratio: 1/1;
    object-fit: cover;
    display: block;
    margin:0 auto;
    border-radius: 0 30%;
    margin-bottom:20px;
}
.topic-content time{
    font-size:0.875rem;
    color:#707070;
}
.topic-content h3{
    font-weight: 500;
    font-size:1rem;
}


@media screen and (max-width:768px){
    #mainvisual{
        margin-bottom: 80px;
    }
    .catch{
        margin:17vh 0 35px;
        font-size:1.5rem;
    }
    .catch-en{
        font-size:0.875rem;
    }
    .comment{
        flex-direction: column;
        align-items: flex-start;
        gap:5px;
        margin-bottom: 80px;
    }
    #works{
        margin-bottom:80px;
    }
    .slider{
        margin-bottom: 40px;
    }
    .btn a{
        font-size: 1rem;
    }
    .sect-title/*topページだけ*/{
        margin-bottom:15px;
    }
    #topic{
        margin-bottom:100px;
    }
    .topic-content{
        margin-bottom: 40px;
    }
    .topic-content article{
        width:43%;
    }
    .topic-content img{
        margin-bottom:10px;
    }
    .topic-content time{
        font-size:0.8125rem;
    }
    .topic-content h3{
        font-size: 0.875rem;
    }
}