@charset "UTF-8";

body{
    color: #333;
    font-family:  "游ゴシック体", "YuGothic", "游ゴシック Medium", "Yu Gothic Medium", "游ゴシック", "Yu Gothic", "メイリオ", sans-serif;;
    letter-spacing: 0.1em;
}

a{
    color: #333;
    text-decoration: none;
}

img{
    max-width: 100%;
    vertical-align: bottom;
}

li{
    list-style: none;
}

.wrapper{
    width: 90%;
    max-width: 960px;
    margin: 0 auto;
}

#header{
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

#header .site-title{
    width: 120px;
    line-height: 1px
}

#header .site-title a{
    display: block;
}
#header ul{
    display: flex;
    
}

#header ul li{
    margin-left: 20px;
}

#header ul li a{
    color: #333;
    font-size: 1.2rem;
}

#header ul li a:hover{
    background-color: #333;
    color: #fff;
}

@media screen and (max-width:840px) {
    #header{
        padding-top: 0;
        margin-bottom: 0;
    }

    #header nav{
        display: none;
    }

    #header .site-title{
        width: 80px;
    }
}

#mainV h1{
    font-size: 50px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
}

.content{
    padding: 80px;
    background-color: #315171;
    width: 100%;
    margin: 0 auto;
    text-align: center;
}

#site-img {
    display: flex;
    padding-bottom: 50px;
}

#site-img li {
    width: 20%;
    padding: 10px;
}

@media screen and (max-width:840px) {
    .content{
        padding: 0;
    }

    #site-img{
        padding-bottom: 5px;
    }
}

#section1{
   margin-top: 50px;
   margin-bottom: 100px;
}

#section1 .inner{
    background-color: #fff;
    color: #000;
    border-radius: 6px;
    padding: 20px;
    
}

#section1 h2{
    margin-bottom: 30px;
}

.sec-title .ja{
    font-size: 36px;
}

.sec-title .en{
    font-size: 18px;
}

#section1 .items{
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 50px;
}

#section1 .item{
    width: 45%;
}

#section1 .item img{
    border-radius: 10px;
}

#section1 .title{
    font-size: 23px;
    margin-bottom: 15px;
}

@media screen and (max-width:840px) {
    #section1{
   margin-bottom: 50px;
}


    #section1 .items{
        flex-direction: column;
    }

    #section1 .items:last-child{
        margin-bottom: 0;
    }

    #section1 .item{
        width: 100%;
    }

    .sec-title .ja{
    font-size: 24px;
    }

    .sec-title .en{
    font-size: 17px;
    }

    #section1 .title{
        font-size: 17px;
    }
}

#section2{
    width: 100%;
    max-width: none;
    background-color: #315171;
    color: #fff;
    padding: 50px 8px 80px;
    margin-bottom: 50px;
}

#section2 .sec-title {
    text-align: center;
    margin-bottom: 50px;
}

#section2 dl{
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
}

#section2 dt{
    width: 20%;
    border-bottom: solid 1px #000;
    padding: 15px;
}

#section2 dd{
    width: 70%;
    border-bottom: solid 1px #000;
    padding: 15px;
}

@media screen and (max-width:840px) {
    #section2 dl{
        flex-direction: column;
    }

    #section2 dt{
        width: 100%;
        border-bottom: none;
        padding: 0;
    }

    #section2 dd{
        width: 100%;
    }
}

#section3{
    margin-bottom: 80px;
}

#section3 .sec-title{
    margin-bottom: 30px;
}
.accordion-content {
    display: none;
}


.accordion-header {
    background-color: #FFF;
    padding: 12px 45px 10px 20px;
    margin: 10px 0 0;
    cursor: pointer;
    position: relative;
    text-indent: -1em;
    padding-left: 1em;
}

.accordion-header::before,
.accordion-header::after{
    position:absolute;
    content:'';
    top:1px;
    right:20px;
    bottom:0;
    width:12px;
    height:2px;
    margin:auto;
    background:#151E2F;
}
.accordion-header::after{
    transform:rotate(-90deg);
    transition:transform 0.3s;
}
.accordion-header.active::after{
    transform:rotate(0deg);}

.accordion-content {
    background-color: #FFF;
    padding: 24px 20px 24px ;
}

.accordion-header span,
.accordion-content span{
    padding-left: 25px;
    position: relative;
}

.accordion-header span::before{
    position: absolute;
    content:"Q";
    bottom: -3px;
    left: 0;
    color: red;
    font-size: 18px;
    font-weight: bold;
}


.accordion-content span::before{
    position: absolute;
    content:"A";
    bottom: -3px;
    left: 0;
    color: green;
    font-size: 17px;
    font-weight: bold;
}

.accordion-header:hover {
    background-color: #F2F2F2;
}

@media screen and (max-width:840px){
    .accordion-header span::before{
        display: none;
    }

    .accordion-content span::before{
        display: none;
    }

    #section3 .indent{
        text-indent: -1em;
        padding-left: 1em;
    }
}

#section3 .indent{
    text-indent: -1em;
    padding-left: 1em;
}

#section4{
    width: 100%;
    max-width: none;
    background-color: #315171;
    color: #fff;
    padding: 50px 8px 80px;
    margin-bottom: 50px;
}

#section4 .sec-title {
    text-align: center;
    margin-bottom: 50px;
}

#section4 .items{
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
}

#section4 .left{
    width: 45%;
}

#section4 .right{
    width: 45%;
}

#section4 .right img{
    width: 100%;
    height: 450px;
}

#section4 dl{
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
}

#section4 dt{
    width: 20%;
    font-weight: bold;
}

#section4 dd{
    width: 75%;
    margin-left: 5%;
    margin-bottom: 10px;
}

#section4 .add{
    margin-left: 25%;
    margin-bottom: 10px;
}

@media screen and (max-width:840px){
    #section4{
        padding: 30px 8px 5px;
        margin-bottom: 5px;
    }

    #section4 .items{
        flex-direction: column-reverse;
    }

    #section4 .left,#section4 .right{
        width: 100%;
    }

    #section4 .right img{
        margin-bottom: 15px;
    }
}

#footer{
    padding: 0 20px 20px;
    position: relative;
}

#footer .flex{
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#footer .logo{
    width: 120px;
}

#footer .copyright{
    font-size: 0.7rem;
}

.button_top{
    display: block;
    position: fixed; 
    bottom: 20px;    
    right: 20px;     
    background-color: #8b8886;
    color: #fff;
    font-size: 16px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    transition: background-color .3s, transform .3s;
}

.button_top::before{
    content: "";
    display: block;
    width: 10px;
    height: 10px;
    border-top: solid 2px #fff;
    border-right: 2px solid #fff;
    transform: rotate(-45deg);
    transition: transform .3s;
    position: absolute;
    bottom: 15px;
    right: 15px;
  
}

.button_top::after{
    display: block;
    content: "";
    position: absolute;
    right: 10px;
    bottom: 10px;
}

.button_top:hover{
    background-color: #000;
    color: #fff;
}

@media screen and (max-width:840px){
    .button_top{
        bottom: 60px;
    }
}