header{
    background: #fff;
    font-size: 10px;
    letter-spacing: .025em;
}
header *{
    line-height: 1em;
}
header a:hover{
    color: #000;
}
header h1{
    height: 5.8em;
    padding: 0 2em;
    display: flex;
    align-items: center;
}
header h1 img{
    width: 11.2em;
    margin: 0 1.3em 0 0;
}
header h1 span{
    font-size: 2.4em;
    line-height: .833em;
    font-weight: bold;
}
header > a{
    width: 100%;
    height: 15em;
    background: #e5e5e5;
    display: flex;
    justify-content: center;
    align-items: center;
}
header > a img{
    width: 26em;
}
main{
    font-size: 10px;
}
main *{
    line-height: 1em;
}
main{
    width: 100em;
    margin: 8em auto 0;
    display: flex;
    justify-content: space-between;
}

.left_nav{
    width: 30em;
}

.left_nav dt{
    font-size: 1.8em;
    font-weight: 400;
    margin: 0 0 1.3888em;
    aspect-ratio: 280/40;
    background: #3c3c3c;
    color: #fff;
    display: flex;
    align-items: center;
    letter-spacing: .05em;
    text-indent: 1em;
}
.left_nav .category dt{
    margin: 0 0 1em;
}
.left_nav dl + dl{
    margin: 5em 0 0;
}
.popular dd + dd{
    margin: 1.5em 0 0;
}
.popular dd a{
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.popular dd a img{
    width: 45%;
    aspect-ratio: 8/5;
    object-fit: cover;
    object-position: center;
}
.popular dd a span{
    width: 50%;
    display: block;
}
.popular dd a em{
    font-size: 1.4em;
    margin: 0 0 .2em;
    font-weight: 400;
    font-style: normal;
    display: block;
}
.popular dd a small{
    font-size: 1.2em;
    line-height: 1.5em;
    letter-spacing: .08em;
    font-weight: 400;
}
.category dd a{
    font-size: 1.4em;
    padding: .8em 1em;
    line-height: 1.7em;
    font-weight: 400;
    letter-spacing: 0;
    display: block;
}
.category dd{
    font-feature-settings: "palt";
}
.category dd + dd{
    border-top: 1px solid #ccc;
}

@media screen and (max-width:1200px) {
    main{
        font-size: 1vw;
    }
    main{
        width: 90em;
    }
    .left_nav{
        width: 30em;
    }
}

@media screen and (max-width:768px) {
    header h1{
        height: 2.8em;
        padding: 0 1em;
    }
    header h1 img{
        width: 5.6em;
        margin: 0 .6em 0 0;
    }
    header h1 span{
        font-size: 1.2em;
    }
    header > a img{
        width: 13em;
    }
    header > a{
        height: 7.5em;
    }

    main{
        width: 92%;
        margin: 6em auto;
        font-size: 2.6666vw;
        flex-direction: column-reverse;
    }
    
    .category dd a{
        font-size: 1.2em;
    }
    .left_nav{
        width: 100%;
    }
    
}