body {
    margin: 0;
    padding: 0;
    background: #F1EFED;
    font-family: Arial, Helvetica, sans-serif;
}
section,div,p,figure,h1,h2,h3,h4,ul,ol,dl,dt,dd,li {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
img {
    width: 100%;
    height: auto;
    vertical-align: bottom;
}
a {
    text-decoration: none;
}

html {
    font-size: 62.5%;
}
.sp {
    display: none;
}
@media screen and (max-width: 860px) {
    .pc {
        display: none;
    }
    .sp {
        display: block;
    }
}



.col2 {
    display: flex;
    flex-wrap: wrap;
}
.col2 .col-main {
    width: 63%;
}
.col2 .col-form {
    width: 37%;
}
@media screen and (max-width: 860px) {
    .col2 {
        flex-direction: column;
    }
    .col2 .col-main,
    .col2 .col-form {
        width: 100%;
    }
}

.footer {
    font-size: 1.1rem;
    font-family: Arial, Helvetica, sans-serif;
    color: #999;
    text-align: center;
    padding: 30px;
}

.ondemand-seminar {
    max-width: 1240px;
    margin: 30px auto 0;
    padding: 30px 0;
    /*border-radius: 30px;
    background: #FFF3DD;*/
    /*box-shadow: 2px 3px 10px 0px rgba(0,0,0,0.1);*/
}
.form-buynow {
    padding: 0 30px 20px;
    position: sticky;
    top: 20px;
}
.form-buynow-inner {
    border-radius: 20px;
    background: #FFF;
}
.form-buynow .form-title {
    font-size: 2.1rem;
    text-align: center;
    padding: 20px 10px 10px;
}
.form-buynow .form-tag {
}
.form-buynow .form-tag iframe {
    /*height: 500px;*/
    padding: 0 20px 30px;
    box-sizing: border-box;
}
@media screen and (max-width: 860px) {
    .form-buynow {
        padding: 0 15px;
    }
    .form-buynow .form-tag iframe {
        /*height: auto;*/
    }
}

.seminar-head {
    position: relative;
    background: #000;
    overflow: hidden;
    border-radius: 5px;
    /*border-top-right-radius: 30px;
    border-bottom-left-radius: 30px;*/
    /*margin-left: -20px;*/
    box-shadow: 5px 5px 10px 0px rgba(0,0,0,0.1);
}
.seminar-title {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    text-align: center;
    width: 100%;
    color: #FFF;
    font-size: 3.8rem;
    line-height: 1.7em;
    z-index: 100;
}
.seminar-title .small {
    font-size: 2.3rem;
}
.marker {
    text-decoration: underline; /* 下線 */
    text-decoration-thickness: 0.3em; /* 線の太さ */
    text-decoration-color: rgba(255, 228, 0, 0.9); /* 線の色 */
    text-underline-offset: -0.1em; /* 線の位置。テキストに重なるようにやや上部にする */
    text-decoration-skip-ink: none;
}

.seminar-img {
    opacity: 0.6;
}

.event {
    margin: 30px 0 0 30px;
    background: #FFF;
    border-radius: 15px;
    border-bottom-right-radius: 30px;
    border-top-left-radius: 30px;
    padding: 20px;
    position: relative;
}
.event:after {
    content: '';
    display: block;
    position: absolute;
    top: 23px;
    left: -5px;
    width: 12px;
    height: 24px;
    background: #FFDE01;
}
.event-title {
    font-size: 2.1rem;
}
.event-description {
    margin-top: 0.75em;
    font-size: 1.6rem;
}
.event-btn {
    display: block;
    background: #FFDE01;
    text-align: center;
    max-width: 200px;
    padding: 10px;
    border-radius: 30px;
    font-size: 1.6rem;
    font-weight: 700;
    color: #242424;
    margin-top: 15px;
    margin-left: auto;
    transition: all 0.24s;
}
.event-btn:hover {
    background: #242424;
    color: #FFDE01;
}

@media screen and (max-width: 1240px) {
    .seminar-head {
        margin-left: 30px;
    }
    .seminar-title {
        font-size: 3.1rem;
    }
    .seminar-title .small {
        font-size: 2.1rem;
    }
}

@media screen and (max-width: 860px) {
    .ondemand-seminar {
        margin: 0px auto;
        padding: 0;
    }
    .seminar-head {
        margin: 0px;
        border-radius: 0;
    }
    .seminar-title {
        font-size: 3.6rem;
        line-height: 1.4em;
    }
    .seminar-title .small {
        font-size: 2.4rem;
    }
    .event {
        margin: 30px 15px;
        border-radius: 10px;
        border-bottom-right-radius: 20px;
        border-top-left-radius: 20px;
    }
    .form-buynow-inner {
        border-radius: 20px;
        height: auto;
        overflow-y: scroll;
    }
    .event-btn {
        margin: 20px auto 0;
    }
}
@media screen and (max-width: 540px) {
    .seminar-title {
        font-size: 2.7rem;
        line-height: 1.4em;
    }
    .seminar-title .small {
        font-size: 1.6rem;
    }
}

.modal-contents {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 15px;
}
.modal-contents._closed {
    display: none;
}
.modal-contents .modal-contents-inner {
    width: 100%;
    max-width: 540px;
    height: 600px;
    overflow: scroll;
    background: #EFEFEF;
    margin: 0 auto;
    border-radius: 8px;
    overflow-y: scroll;
}
@media screen and (max-width: 860px) {
    .modal-contents .modal-contents-inner {
        height: 70vh;
    }
}
.modal-contents .modal-event {
    background: #EFEFEF;
    padding-bottom: 30px;
}
.modal-contents .modal-event-name {
    font-size: 2.3rem;
    padding: 15px 15px 0;
}
.modal-contents .modal-event-data {
    font-size: 1.4rem;
    padding: 10px 15px;
}
.modal-contents .modal-event-data tr {
    float: left;
}
.modal-contents .modal-event-data th,
.modal-contents .modal-event-data td {
    padding: 3px 7px;
}
.modal-contents .modal-event-data th {
    background: #CCC;
    text-align: center;
    border-radius: 5px;
    font-size: 1.3rem;
}
.modal-contents .modal-event-txt {
    padding: 15px 20px;
    font-size: 1.5rem;
    line-height: 1.7em;
    border-radius: 5px;
    margin: 0 15px;
    background: #FFF;
}
.modal-contents .modal-close {
    position: fixed;
    width: 60px;
    height: 60px;
    top: 0;
    right: 0;
    color: #FFF;
    z-index: 1002;
}
.modal-contents .modal-close:hover {
    opacity: 0.8;
}
.modal-contents .modal-close:before {
    content: '';
    display: block;
    position: absolute;
    width: 3px;
    height: 40px;
    background: #FFF;
    top: 50%;
    left: 50%;
    transform: translateY(-50%) rotateZ(-45deg);
}
.modal-contents .modal-close:after {
    content: '';
    display: block;
    position: absolute;
    width: 3px;
    height: 40px;
    background: #FFF;
    top: 50%;
    left: 50%;
    transform: translateY(-50%) rotateZ(45deg);
}
.modal-contents .modal-event-btn {
    display: block;
    background: #FFDE01;
    text-align: center;
    max-width: 260px;
    padding: 15px 10px;
    border-radius: 40px;
    font-size: 1.8rem;
    font-weight: 700;
    color: #242424;
    margin: 30px auto 0;
    transition: all 0.24s;
}
.modal-contents .modal-event-btn:hover {
    background: #242424;
    color: #FFDE01;
}