.firstview {
    width: 100%;
    height: 750px;
    background-color: #fff;
    overflow: hidden;
    margin-top: 80px;
}
.firstview .top-slider .sl-cont {
    position: relative;
}
.firstview .top-slider .prev-arrow {
    position: absolute;
    left: 100px;
    top: 50%;
    z-index: 1;
    cursor: pointer;
}
.firstview .top-slider .next-arrow {
    position: absolute;
    right: 100px;
    top: 50%;
    z-index: 1;
    cursor: pointer;
}
.firstview .top-slider .sl-cont .bg_blur {
    width: 100%;
    height: 750px;
    opacity: .4;
}
.firstview .top-slider .sl-cont .thumbnail {
    width: 80%;
    height: 750px;
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}
.firstview .top-slider .sl-cont .thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.firstview .top-slider .sl-cont .bg_blur img {
    width: 100%;
    height: auto;
}
.firstview .top-slider .sl-cont .textarea {
    position: absolute;
    bottom: 50px;
    left: 14%;
}
.firstview .top-slider .sl-cont .textarea .tag {
    font-size: 1.6rem;
    color: #fff;
    background-color: #6cbacd;
    padding: 6px 35px;
    border-radius: 20px;
    box-shadow: 0px 0px 10px -3px #000000;
    margin-right: 20px;
}
.firstview .top-slider .sl-cont .textarea .ttl {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.8;
    color: #fff;
    text-shadow: 0px 0px 10px #000000;
    margin-top: 20px;
}

@media screen and (max-width:640px) {
    .firstview {
        height: auto;
        background: #999;
    }
    .firstview .top-slider .prev-arrow {
        left: 5%;
    }
    .firstview .top-slider .next-arrow {
        right: 5%;
    }
    .firstview .top-slider .sl-cont .bg_blur {
        display: none;
    }
    .firstview .top-slider .sl-cont .thumbnail {
        width: 100%;
        height: auto;
        position: relative;
        top: unset;
        left: unset;
        transform: unset;
    }
    .firstview .top-slider .sl-cont .thumbnail img {
        object-fit: contain;
    }
    .firstview .top-slider .sl-cont .textarea {
        position: relative;
        bottom: 0;
        left: 0;
        background: #999;
        padding: 15px 5%;
    }
    .firstview .top-slider .sl-cont .textarea .tag {
        font-size: 1.2rem;
        color: #fff;
        background-color: #6cbacd;
        padding: 6px 10px;
        border-radius: 20px;
        box-shadow: 0px 0px 10px -3px #000000;
        display: inline-block;
        margin-bottom: 10px;
        margin-right: 10px;
    }
    .firstview .top-slider .sl-cont .textarea .ttl {
        font-size: 1.6rem;
        text-shadow: 0px 0px 5px #818181;
        margin-top: 5px;
    }
}

#cat_art {
    background-color: #f7f7f7;
    padding: 100px 0;
}
.ttlarea {
    margin-bottom: 60px;
    text-align: center;
}
.ttlarea .secttl {
    font-size: 2.4rem;
    font-weight: 700;
    color: #6cbacd;
}
.ttlarea p {
    font-size: 1.6rem;
    margin-top: 20px;
    line-height: 2;
}

#cat_art .tabs {
    width: 100%;
    margin-bottom: 60px;
}
#cat_art .tabs .tab {
    border: solid 2px #6cbacd;
    background-color: #fff;
    color: #6cbacd;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    width: 33.33%;
    padding: 22px 0;
    cursor: pointer;
}
#cat_art .tabs .tab.active {
    background-color: #6cbacd;
    color: #fff;
}
#cat_art .panels .panel {
    width: 100%;
    display: none;
    opacity: 0;
    transition: all .2s;
}
#cat_art .panels .panel.show {
    display: block;
    opacity: 1;
    transition: all .2s;
}
#cat_art .panels .panel .articles {
    flex-wrap: wrap;
}
#cat_art .panels .panel .articles .card {
    width: 350px;
    background-color: #fff;
    margin-right: 25px;
    margin-bottom: 25px;
    cursor: pointer;
}
#cat_art .panels .panel .articles .card:nth-of-type(3n) {
    margin-right: 0;
}
#cat_art .panels .panel .articles .card:hover {
    box-shadow: 0 0 30px rgb(12 0 0 / 30%);
    transition: all .2s;
}
#cat_art .panels .panel .articles .card .imagearea {
    width: 100%;
    height: 225px;
}
#cat_art .panels .panel .articles .card .imagearea img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
#cat_art .panels .panel .articles .card .textarea {
    padding: 20px;
}
#cat_art .panels .panel .articles .card .textarea .date {
    font-size: 1.2rem;
    color: #878787;
    display: block;
    margin-bottom: 10px;
}
#cat_art .panels .panel .articles .card .textarea .cat {
    font-size: 1.2rem;
    color: #fff;
    background-color: #6cbacd;
    padding: 5px 20px;
    border-radius: 20px;
    margin-bottom: 5px;
    margin-right: 5px;
    display: inline-block;
}
#cat_art .panels .panel .articles .card .textarea h3 {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.6;
    color: #0f0f0f;
    margin-top: 5px;
}
#cat_art .panels .panel .morebtn {
    margin-top: 60px;
    text-align: center;
}
#cat_art .panels .panel .morebtn a {
    display: block;
    width: 500px;
    padding: 30px;
    border: solid 2px #0f0f0f;
    color: #0f0f0f;
    font-size: 1.6rem;
    font-weight: 700;
    position: relative;
    margin: 0 auto;
}
#cat_art .panels .panel .morebtn a i {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

@media screen and (max-width:640px) {
    .ttlarea {
        margin-bottom: 30px;
    }
    #cat_art {
        padding: 40px 0;
    }
    #cat_art .tabs {
        width: 100%;
        margin-bottom: 40px;
    }
    #cat_art .tabs {
        flex-wrap: wrap;
    }
    #cat_art .tabs .tab {
        width: 50%;
        font-size: 1.3rem;
    }
    #cat_art .panels .panel .articles {
        justify-content: space-between;
    }
    #cat_art .panels .panel .articles .card {
        width: calc(50% - 5px);
        background-color: #fff;
        margin-bottom: 10px;
        margin-right: 10px;
        cursor: pointer;
    }
    #cat_art .panels .panel .articles .card:nth-of-type(3n) {
        margin-right: 10px;
    }
    #cat_art .panels .panel .articles .card:nth-of-type(2n) {
        margin-right: 0;
    }
    #cat_art .panels .panel .articles .card .imagearea {
        height: 160px;
    }
    #cat_art .panels .panel .articles .card .textarea {
        padding: 10px;
    }
    #cat_art .panels .panel .articles .card .textarea .date {
        font-size: 1rem;
    }
    #cat_art .panels .panel .articles .card .textarea .cat {
        font-size: 1rem;
        padding: 5px 7px;
    }
    #cat_art .panels .panel .articles .card .textarea h3 {
        font-size: 1.4rem;
        line-height: 1.5;
    }
    #cat_art .panels .panel .morebtn {
        margin-top: 30px;
    }
    #cat_art .panels .panel .morebtn a {
        display: block;
        width: 100%;
        padding: 30px;
        font-size: 1.4rem;
    }
    #cat_art .panels .panel .morebtn a i {
        position: absolute;
        right: 10px;
        top: 50%;
        transform: translateY(-50%);
    }
}

#top_art {
    padding: 100px 0;
    position: relative;
}
#top_art::after {
    display: block;
    width: 100%;
    height: 100px;
    background-color: #f7f7f7;
    position: absolute;
    bottom: 0;
    z-index: -1;
}
#top_art .articles {
    flex-wrap: wrap;
}
#top_art .articles .card {
    width: 350px;
    background-color: #fff;
    margin-right: 25px;
    margin-bottom: 25px;
    cursor: pointer;
}
#top_art .articles .card:nth-of-type(3n) {
    margin-right: 0;
}
#top_art .articles .card:hover {
    box-shadow: 0 0 30px rgb(12 0 0 / 30%);
    transition: all .2s;
}
#top_art .articles .card .imagearea {
    width: 100%;
    height: 225px;
}
#top_art .articles .card .imagearea img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
#top_art .articles .card .textarea {
    padding: 20px;
}
#top_art .articles .card .textarea .date {
    font-size: 1.2rem;
    color: #878787;
    display: block;
    margin-bottom: 10px;
}
#top_art .articles .card .textarea .cat {
    font-size: 1.2rem;
    color: #fff;
    background-color: #6cbacd;
    padding: 5px 20px;
    border-radius: 20px;
    margin-bottom: 5px;
    margin-right: 5px;
    display: inline-block;
}
#top_art .articles .card .textarea h3 {
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.6;
    color: #0f0f0f;
    margin-top: 5px;
}

@media screen and (max-width:640px) {
    #top_art {
        padding: 40px 0;
    }
    #top_art .articles {
        justify-content: space-between;
    }
    #top_art .articles .card {
        width: calc(50% - 5px);
        background-color: #fff;
        margin-bottom: 10px;
        margin-right: 10px;
        cursor: pointer;
    }
    #top_art .articles .card:nth-of-type(3n) {
        margin-right: 10px;
    }
    #top_art .articles .card:nth-of-type(2n) {
        margin-right: 0px;
    }
    #top_art .articles .card .imagearea {
        height: 160px;
    }
    #top_art .articles .card .textarea {
        padding: 10px;
    }
    #top_art .articles .card .textarea .date {
        font-size: 1rem;
    }
    #top_art .articles .card .textarea .cat {
        font-size: 1rem;
        padding: 5px 7px;
    }
    #top_art .articles .card .textarea h3 {
        font-size: 1.4rem;
        line-height: 1.5;
    }
}