@charset "utf-8";
/* CSS Document */

@media (max-width: 639px) {

    /* view */
    .viewpc {
        display: none;
    }

    .viewsp {
        display: block;
    }

    /* common */
    body {
        background-image: none;
        background-size: contain;
    }

    body::before {
        content: "";
        /*background: url(/img/top/top-back.jpg) no-repeat center center;*/
        background-size: contain;
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        z-index: -1;
    }

    /* block */
    .block-container {
        margin-top: 0;
        width: 100%;
    }

    .imgHover .imgFrame {
        padding-bottom: 2em;
    }

    .imgFrame img {
        height: auto;
        width: 84%;
    }

    .block-list {
        height: 150px;
        text-align: center;
    }

    .block-list a img {
        width: 17%;
    }

    .block-menu {
        margin-top: 1em;
    }

    .block-container .block-menu a {
        background-color: rgba(255, 255, 255, 0.9);
        border-bottom: 1px solid #bbb;
        color: #333;
        display: block;
        font-family: 'Times New Roman', Times, serif;
        padding: 0.5em;
        position: relative;
        text-align: left;
        margin-top: 0;
        ;
    }

    .block-menu span {
        display: inline-block;
        padding-left: 2em;
        padding-top: 0.5em;
    }

    .block-copy {
        text-align: center;
    }

    /* logo */
    .logo {
        width: 40%;
        top: 10%;
        left: 30%;
    }

    /* nav */
    nav {
        display: block;
        width: 100%;
    }

    nav .up {
        width: auto;
    }

    nav .up dl dt {
        width: 15%;
    }

    nav .lustup {
        width: auto;
    }

    nav p {
        border-bottom: #333 1px solid;
        display: block;
        font-family: 'Times New Roman', Times, serif;
        font-weight: bold;
        margin: 0;
        padding-bottom: 0.25em;
        text-align: right;
    }

    nav dt {
        clear: left;
        float: left;
        width: 20%;
        font-weight: bold;
        line-height: 1.8;
    }

    nav dd {
        margin: 0 0 0 20%;
        line-height: 1.8;
        white-space: wrap;
        /* text-overflow: ellipsis; */
        overflow: hidden;
    }

    nav .links {
        width: 30%;
    }

    nav img {
        display: block;
        padding-top: 1em;
    }

    nav span {
        display: block;
    }

    nav .linkfree img {
        height: auto;
        max-width: 100%;
    }

    nav .bnr {
        width: auto;
    }

    .block-prologue img,
    .block-diagnosis img {
        height: auto;
        max-width: 80%;
    }

    .block-gear {
        z-index: -1;
        top: 0px;
        left: 0px;
        position: fixed;
    }

    /* gear */
    .top-gear {
        z-index: -1;
    }

    .block-prologue,
    .block-diagnosis {
        background-color: rgba(240, 240, 240, 0.808);
        border-radius: 4px;
        -webkit-border-radius: 4px;
        -moz-border-radius: 4px;
        margin: 2em 5%;
        left: auto;
        padding: 2em 0;
        position: relative;
        text-align: center;
        top: auto;
        width: 90%;
        z-index: 0;
    }

    .block-prologue p,
    .block-diagnosis p {
        margin-bottom: 0;
    }

}