body {
    -webkit-text-size-adjust: 100%;
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.2rem;
    background: url(../img_common/bg.jpg) 200px;
}

header {
    width: 100%;
    height: 30px;
    background-color: #2f6c89;
    text-align: center;
}

header p {
    max-width: 1100px;
    margin: 0 auto;
    padding: 10px 0;
}

header img {
    width: 95%;
}
.pc_title {
    display: none;
}
.sp_title {
    display: none;
}

#container {
    display: flex;
    justify-content: center;
}
.Movie {
    margin: 0 auto;
    border-radius: 15px;
}

/*　Navigation　*/

/* .cont_t {
    text-align:center ;
}
.cont_t img {
    width: 172px;
    height: 50px;
    margin-top: 40px;
    margin-bottom: 30px;
} */

#nav-menu {
    width: 230px;
    background-color: #ffffff97;
    list-style: none;
    border-radius: 10px;
    margin-top: 34px;
    margin-bottom: 100px;
    margin-right: 20px; /* navとmainの隙間; */
    margin-left: 20px;
    padding-top: 30px ;
    padding-bottom: 30px ;
}

#nav-menu li {
    display:table;/*display: table-cell親要素*/
}

#nav-menu li a {
    display: table-cell; /*vertical-align適応のため*/
    height: 60px;
    /* border-bottom: 1px dotted #f99494; */
    padding: 3px 15px;
    text-decoration: none;
    color:#1e1e1e;
    width: 250px; 
    text-align: left;
    font-size: 1.2rem;
    font-weight: 400;
    vertical-align: middle;
}

#nav-menu li a:hover {
    background-color: #2f6c89;
    color: #FFF;
}

main {
    max-width: 850px;
    flex: 1;
    /* background-color: #ffffff; */
    line-height: 1.7rem;
}



.top_img img {
    width: 100%;
}
/*　学会期間中の宿泊について　*/

.stay_info {
    width: 95%;
    margin:0 auto;
    margin-bottom: 20px;
    background-color: #ffffff9e;
    border-radius: 10px;
    padding: 10px 20px 20px 20px;
}


/*　新着情報　*/

.information {
    width: 95%;
    margin:0 auto;
    margin-bottom: 20px;
    background-color: #FFF;
    border-radius: 10px;
    padding: 5px 20px 20px 20px;
}

.new {
    color: #000000;
    font-size: 1.4rem;
    padding: 15px 0px 10px 10px;
    margin-top: 10px;
    background-image: url("../img_top/new_t.png");
    background-repeat: no-repeat;
    background-size: 55px;
}

.topics {
    text-align: left;
}

.topics dl {
    padding: 12px 0;
}

.topics dt {
    font-weight: 600;
    color: #2f6c89;
    padding-bottom: 6px;
    position: absolute;
}

.topics dd {
    margin-left: 100px;
}

.topics a:hover {
    text-decoration: underline;
}
.topics a {
    color: #981b27;
}

.jimukyoku {
    width: 95%;  
    color: #000000;
    background-image: url("../img_top/jim_t.png");
    background-repeat: no-repeat;
    background-size: 120px; 
    margin: 20px;
}
.jimukyoku h2 {
    color: #FFF;
    font-size: 1.1rem;
    margin-bottom: 10px;
    padding: 0.2rem 0 0 0.9rem;
}
.jim_t {
    font-size: 1.2rem;
    color: #2f6c89;
    font-weight: 700;
    margin-top: 10px;
}

.jimukyoku p {
    margin-bottom: 5px;
    /* font-size: 1rem; */
    line-height: 1.4rem;
}

.jimukyoku p a:hover {
    text-decoration: underline;
}

/*　footer　*/

#site-footer {
    background-color: #2f6c89;
    width: 100%;
    height: 100px;
}

#copyright {
    color: #fff;
    text-align: center;
    padding-top: 20px;
}

#drawer_toggle {
    display: none;
}

/*　text　*/


.txt_700 {
    font-weight: 700;
}

.Red_Bold {
    font-weight: 700;
    color: #F00;
}

/*  ダウンロードボタン　*/
.PDF_DL {
	font-size: 1.1rem;
	width: 80%;
	background-color: #d03d3d;
	color: #FFF;
	font-weight: 700;
	text-align: center;
	margin: 20px auto;
	padding: 2px;
	border-radius: 4px;
}
.PDF_DL a {
	display: block;
	text-decoration: none;
	color: #FFF;
    padding: 7px;
}
.PDF_DL :hover {
	background-color: #f84450;
}

.flyer_dl  {
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    text-decoration: none;
    color: #ffffff;
    font-size: 0.9rem;
    border-radius: 5px;
    width: 180px;
    height: 60px;
    transition: 0.3s;
    background-color: [object object];
    background-image: radial-gradient(circle at 100% 0%, rgb(25, 145, 147) 15%, rgb(5, 72, 94));
    margin: 20px auto 5px auto;
  }
  
  .flyer_dl :hover {
    opacity: .5;
  }

.sub_info {
    width: 80%;
    background-color: #2f6c89;
    color: #FFF;
    text-align: center;
    font-size: 1.2rem;
    padding: 0.7rem;
    margin: 1rem auto;
    border-radius: 7px;
}

/*----------------------------------------------
　バナー
----------------------------------------------*/

.banner-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 16px; /* 各バナーの余白 */
    justify-content: center;
    padding: 16px;
    margin-bottom: 1.5rem;
}
  
.banner-item {
    flex: 0 1 calc((100% - 32px) / 3); /* gap16pxが2列分 */
    height: auto; /* 適宜変更 */
    /* text-align: center;
    line-height: 150px;
    font-weight: bold;
    border-radius: 8px; */
    width: 20%;
}

.banner-img {
    width: 100%;
}

.banner_title {
	font-size: 1.4rem;
	color: #000000;
	padding: 0.3rem 0.5rem;
	border-left: 10px solid #327391;
    margin: 1.5rem 0 1.0rem 1rem;
}

@media all and (max-width:600px) {

    #nav-menu {
        box-sizing: border-box;
        position: fixed;
        top: 0px;
        /* display: none; */
        width: 65%;
        height: 100%;
        background: #2f6c89;
        opacity: 0.9;
        display: block;
        left: -100%;
        transition: left .5s;
        padding-top: 75px;
        margin-top: 0px;
        z-index: 1;
        border-radius: 0px;
    }
    
    #nav-menu.sp_open {
        left: 0;
    }

    #nav-menu ul {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    #nav-menu li a {
        display: block;
        text-align: left;
        height: 50px;
        width: 100%;
        color: rgb(255, 255, 255);
        font-size: 1rem;
        text-decoration: none;
        border-bottom: 0px;
        padding-top: 15px;

    }

    #nav-menu li {
        display:block;/*display: table-cell親要素*/
    }

    #nav-menu li a:hover {
        background-color: #103e53;
        border-bottom: 0px
    }
    
    #nav-menu li:hover a {
        color: #fff;
    }

    #drawer_toggle {
        z-index: 200;
        box-sizing: border-box;
        position: absolute;
        top: 0;
        left: 0;
        display: inline-block;
        width: 60px;
        height: 60px;
    }
    #drawer_toggle span {
        position: absolute;
        top: 19px;
        left: 17px;
        display: inline-block;
        width: 30px;
        height: 3px;
        border-radius: 2px;
        background-color: rgb(255, 255, 255);
        vertical-align: top;
    }
    #drawer_toggle span:nth-child(2) {
        margin-top: 10px;
    }
    #drawer_toggle span:last-child {
        margin-top: 20px;
    }
    #drawer_toggle.open span {
        top: 29px;
        left: 14px;
        width: 35px;
        margin: 0;
    }
    #drawer_toggle.open span:first-child {
        transform: rotate(45deg);
    }
    #drawer_toggle.open span:nth-child(2) {
        display: none;
    }
    #drawer_toggle.open span:last-child {
        transform: rotate(-45deg);
    } 

    .cont_t img {
        display: none;
    }

    header {
        height: 60px;
        text-align: right;
    }
    header img {
        width: 87%;
        margin-top: 5px;
    }

    header p {
        padding:0;
    }
    .sp_title {
        display:block;
        text-align: right;
    }
    .pc_title {
        display:none;
    }

    .topics dt {
        /* font-weight: 600;
        padding-bottom: 6px; */
        position: relative;
    }
    
    .topics dd {
        margin-left: 0px;
    }

    main {
        width: 100%;
    }

    #site-footer {
        height: 50px;
    }
    #copyright {
        padding-top: 10px;
    }
}
/*----------------------------------------------
　バナー
----------------------------------------------*/

/* 画面幅が650px以下の場合は2列 */
@media screen and (max-width: 750px) {
    .banner-item {
      flex: 0 1 calc((100% - 16px) / 2);
    }
  }
  
  /* 画面幅が400px以下の場合は1列 */
  @media screen and (max-width: 400px) {
    .banner-item {
      flex: 0 1 100%;
    }
  }