body{
    font-size: 94%;
}
/* CSS Document */

.main_visual{
    min-height: 280px;
    display: flex;
    flex-direction: column;
    text-align: center;
    justify-content: center;
    align-content: center;
    background: url("../image/main_bg10.png") center no-repeat;
    background-size: cover;
    color: #fff;
    position: relative;
}
.main_visual h2{
    font-size: 320%;
    font-weight: bold;
    font-family: 'Roboto', sans-serif;
}
.main_visual p{
    font-size: 120%;
}
.main_content{
    max-width: 960px;
    margin: auto;
}
.main_text{
    text-align: center;
    background: url("../image/bg_012.png")no-repeat center;
}
.main_text p{
    font-size: 147%;
    line-height: 50px;
    padding: 30px 0;
    margin-top: 80px;
}
.link_box{
    margin-top: 100px;
}
.link_box ul {
    display: flex;
    justify-content: space-between;
    text-align: center;
    flex-wrap: wrap;
}
.link_box ul li {
    width: 20%;
    min-width: 235px;
    height: 500px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    -webkit-background-size: cover;
    background-size: cover;
    position: relative;
    overflow: hidden;
}
.cover_a{
    position: absolute;
    text-outline: 0;
    width: 100%;
    height: 100%;
}
.link_box ul li .link_bg{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    -webkit-transition: all .3s ease-out;
    -o-transition: all .3s ease-out;
    transition: all .3s ease-out ;
}
.link_box ul li:hover .link_bg{
    -webkit-transform: scale(1.1);
    -ms-transform: scale(1.1);
    -o-transform: scale(1.1);
    transform: scale(1.1);
}
.link_box ul li.greeting .link_bg {
    background: url("../image/img_011.png") no-repeat center;
}
.link_box ul li.profile .link_bg {
    background: url("../image/img_021.png") no-repeat center;
}
.link_box ul li.bases .link_bg {
    background: url("../image/img_031.png") no-repeat center;
}
.link_box ul li.environment .link_bg {
    background: url("../image/img_041.png") no-repeat center;
}
.link_bottom{
    margin-bottom: 30px;
}
.link_title{
    color: #fff;
    font-size: 200%;
    font-weight: bold;
    margin-bottom: 10px;
    font-family: 'Roboto', sans-serif;
    line-height: 36px;
}
.link_sub{
    color: #fff;
    font-size: 107%;
    margin-bottom: 20px;
}
.more_button.rev{
    position: relative;
    z-index: 2;
}
@media screen and ( max-width: 767px ){
.main_text {
    padding: 0 5%;
    background-size: contain;
}
.link_box ul {
    justify-content: center;
}
.link_box ul li{
    margin: 2.5%;
}
}
@media screen and ( max-width: 525px ){
.link_box ul li{
    width: 90%;
    max-height: 330px;
}
.link_box ul li.greeting {
    background: url("../image/img_011.png") no-repeat center -30px;
}
.link_title,.link_sub{
    text-shadow:2px 2px 5px #000000;
}
}