:root{
    --header-height: 130px;
    --footer-height: 600px;
}
h2,.top-msg,.btn-entry{
    font-family: "Dela Gothic One", sans-serif;
    font-weight: 400;
    font-style: normal;
}
h3,p,li{
    font-size: 1.5rem;
    font-family: "Noto Sans", sans-serif;
    font-optical-sizing: auto;
    font-style: normal;
    font-variation-settings:
    "wdth" 100;
}
h3{
    color: #000;
    font-size: 2rem;
    margin: 0.7rem 0 0.5rem;
}
h3::before,h3::after{
    content: " ● ";
    color: "#000";
}
body{
    background-color: #283246;
    z-index:100;
}
h2{
    height: 9rem;
    position: relative;
    line-height: 8rem;
    padding-left: 2rem;
    text-decoration: underline;
    font-size: 3rem;
}
h2::before{
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6rem;
    height: 6rem;
    background-color: #00f;
    transform: translateY(-50%) rotate(45deg);
    z-index: -1;
}
.btn{
    text-decoration: none;
}
header{
    padding: 1rem 3rem;
    height: var(--header-height);
    position: relative;
}
.header-logo{
    position: relative;
    width: 130px;
    height: 100%;
}
.header-link{
    position: absolute;
    right:10vw;
    top:50%;
    transform: translateY(-50%)
}
.header-link dl{
    display: flex;
    justify-content: flex-end;
}
.header-link li{
    margin-right: 2rem;
    padding: 2px;
    list-style: none;
}
#header-logo{
    width: 400px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}
footer{
    position: relative;
    padding: 1rem 4rem;
    height: calc(var(--footer-height) - 2*1rem);
    width: 100vw;
    background-image: url("/com/img/footer.svg");
    background-size: 100%;
    background-position: center top;
}
.footer-cont{
    position: absolute;
    top: 10rem;
    left: 20vw;
}
footer li{
    padding: 1rem;
    font-size: 1.5rem;
    list-style: none;
    text-shadow: #000 1px 0 5px;
}
footer li a{
    text-decoration: none;
}
.footer-img{
    position: absolute;
    bottom:0;
    width: 100vw;
    transform: translateX(-4rem);
    pointer-events: none;
}
.contents{
    height: auto;
    min-height: calc(100vh - var(--footer-height) - var(--header-height));
}
.top{
    background-color: #ffffff88;
    width: 100vw;
    aspect-ratio: 16/9;
    position: relative;
}
.top-img{
    text-align: center;
    width: 100vw;
    aspect-ratio: 16/9;
    object-fit: cover;
}
.top-msg{
    left: 18vw;
    top: 21vw;
    text-align: center;
    position: absolute;
    font-size: 3.2vw;
    color: #000;
}
.main-contents{
    width: 70%;
    margin: 0 15%;
    padding-top: 2rem;
}
.session-cont{
    margin: 0 7rem 1rem;
}
.session-inner{
    text-align: center;
    width: 40vw;
    min-width: 650px;
    margin: 0 auto;
    padding: 0.7rem 10%;
    background-color: #fff;
    border-radius: 2rem;
    color: #000;
}
.session-list{
    padding-left: 3rem;
    text-align: left;
}
.session-list li{
    font-size: 1.5rem;
    list-style: disc;
}
.btn-entry{
    margin: 1rem auto;
    background-color: #00f;
    border-radius: 1rem;
    font-size: 3rem;
    width: 15rem;
    height: 5rem;
    color: #fff;
}
.copy{
    position: absolute;
    bottom: 0;
    right: 0;
    text-shadow: #000 1px 0 5px;
    margin: 2rem 4rem;
    font-size: 1.5rem;
}

@media screen and (max-width:1300px){
    html {
        font-size: 75%;
    }
    :root{
        --footer-height: 35vw;
    }
    .footer-cont{
        top: 5rem;
        left: 20vw;
    }
    footer li{
        padding: 1vw;
        font-size: 1.2rem;
    }
    .copy{
        font-size: 1rem;
    }
}

@media screen and (max-width: 999px){
    .main-contents{
        width: 90%;
        margin: 0 5%;
    }
}
@media screen and (max-width: 899px){
    html {
        font-size: 62.5%;
    }
    :root{
        --header-height: 70px;
    }
    .header-logo{
        margin: 0 auto;
    }
    .header-logo,#header-logo,.header-logo img{
        width: 200px;
    }
    .header-link{
        display: none;
    }
    .session-inner{
        min-width: 0;
        width: 100%;
    }
}
@media screen and (max-width: 480px) {
    .session-cont{
        margin: 0 0 1rem;
    }
    .session-inner{
        padding: 0.7rem 2%;
    }
    .footer-img{
        display: none;
    }
    .footer-cont{
        top: 2rem;
    }

}