html {
    --main-color: #2B66B5;
    --sub-color: #DC2A27;
    --font-color: #333C5E;
    scroll-padding-top: 100px;
}

main {
    overflow-x: hidden;
    max-width: unset;
    padding-top: 20px;
}

figure {
    margin: 0;
}

img {
    width: 100%;
}

.article .btn {
    margin: 60px auto 20px;
}

span.under-line {
    background: linear-gradient(transparent 70%, #04E61A 70%);
}

span.em {
    font-weight: 900;
}

main ul {
    padding-left: 0;
}

main dl div dd {
    margin-left: 0;
}

body .fv-wr h1 {
    font-size: 2em;
}

main .head-red {
    color: var(--sub-color);
}

main .marker {
    background:linear-gradient(transparent 60%, #FFF457 60%);
}

main b {
    font-weight: 900;
}

main p {
    width: fit-content;
    max-width: 40em;
    font-size: clamp(1rem, 2.5vw, 1.1rem);
}

main .bp {
    display: inline-block;
}

main .center-text {
    text-align: center;
}

main section {
    margin: 2em auto;
    padding: 0 10px;
}

@media (min-width: 640px) {
    main .flex-box {
        display: flex;
        align-items: center;
        gap: 2%;
    }

    main .flex-box .flex-content {
        width: 49%;
        margin: 0;
    }
}

.a2 {
    display: block;
    width: fit-content;
    background-color: #fff;
    border: 1px solid #000;
    padding: 24px 65px;
    font-weight: bold;
    max-width: 300px;
    position: relative;
    color: black;
    text-decoration: none;
    margin: 2em auto;
    border-left: 8px solid #000;
}

.a2:hover {
    color: white;
    background-color: var(--main-color);
    transition: all 0.5s;
}

.both-line::before, .both-line::after {
    background: #d60b30;
    content: "";
    height: 1px;
    left: 0;
    position: absolute;
    width: 100%;
}

.both-line {
    border-bottom: 1px solid #d60b30;
    border-top: 1px solid #d60b30;
    display: inline-block;
    padding: 3px 0;
    position: relative;
}

.both-line::after {
    bottom: 2px;
}

/*************

パンくずリスト

**************/
.breadcrumbs {
    padding: 0;
    margin: 16px auto;
    max-width: 1320px;
    padding: 0 10px;
}

.breadcrumbs li {
    width: fit-content;
    display: inline-flex;
    margin: 0 6px 0 0;
    gap: 4px;
}

.breadcrumbs li:not(:last-child)::after {
    content: "\03e";
}

.breadcrumbs li a {
    text-decoration: underline;
    color: #fff;
}

@media (min-width: 640px) {
    .breadcrumbs {
        padding: 0 20px;
    }
}


/*************

overview

**************/
.overview {
    display: flex;
    flex-flow: column;
}

.overview .overview_content {
    flex-basis: 250px;
    flex-shrink: 0;
    flex-grow: 1;
}

.overview dl div {
    display: flex;
    margin: 12px 0;
}

.overview dl div dt {
    width: 20%;
    max-width: 120px;
    box-sizing: border-box;
    text-align: center;
    margin: 10px;
    color: #fff;
    font-weight: bold;
}

.overview dl div dd {
    width: 80%;
    box-sizing: border-box;
    align-self: center;
}

.overview .overview_img {
    display: flex;
    flex-flow: column;
    gap: 10px;
}
@media (min-width: 600px) {
    .overview .overview_img {
        flex-flow: row;
    }
    .overview .overview_img img {
        width: 49%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
    }    
    .overview .overview_img figure img {
        width: 100%;
    }
}

@media (min-width: 800px) {
    .overview {
        flex-flow: row;
        gap: 16px;
        max-width: 1320px;
    }

}

/*************

case_detail

**************/
.case_detail {
    max-width: 1320px;
}

.case_detail .intro {
    margin: 4em auto;
}

.case_detail .c {
    padding: 2em 0;
}

.case_detail .c::after {
    content: "";
    display: block;
    width: 100%;
    height: 1px;
    margin-top: 2em;
    background-color: #393939;
}


.case_detail .c p {
    line-height: 1.8;
    letter-spacing: 3px;
    margin: 0 auto;
}

.case_detail .c h2 {
    margin: 0 auto 2em;
    width: fit-content;
    display: block;
}

/*************

image-content

**************/

.image-content li {
    display: flex;
    flex-flow: column;
    gap: 10px;
    margin: 2em auto;
}

.image-content .a {
    display: block;
}

.image-content .a p {
    margin: 0 auto;
}

.image-content li p {
    min-width: 200px;
}

.image-content li .img-wr {
    max-width: 700px;
    margin-top: 32px;
    display: flex;
    gap: 12px;
    align-items: self-start;
}

.image-content li .img-wr img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

@media (min-width: 600px) {
    .image-content li {
        flex-flow: row;
        gap: 2em;
        margin: 4em auto;
    }
    .image-content li:nth-last-of-type(odd) {
        flex-direction: row-reverse;
    }
    .image-content li .img-wr img {
        width: 49%;
        flex-grow: 1;
    }
}

.img-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px,1fr));
    gap: 12px;
    margin: 2em auto;
}

.vertical-figu {
    max-width: 500px;
}

.vertical-figu figure img {
    aspect-ratio: 3/5;
    object-fit: cover;
}

figcaption {
    text-align: center;
}