* {margin: 0; padding: 0; box-sizing: border-box;}
li {list-style: none;}
a {text-decoration: none; color: black;}
html {font-family: "IBM Plex Sans KR", sans-serif; font-size: 12px;}
/* fontSize : 1rem = 12px, 0.75rem = 16px, 2rem = 24px */

.nav_pc,
.menu_pc {display: none;}
.header {position: fixed; top: 0; left: 0;}

.nav {padding-top: 20px; text-align: center; color: #999; margin: 10px;}
.nav a {color: #475775;}
.nav_mobile {
    color: #999;
    text-align: center;
    margin: 0 auto;
    font-size: 2rem;
}
.nav_mobile .check {color: #475775;}
.title, .highlight {color: #475775; font-size: 1.5rem;}
.wrap {padding: 20px;}

.banner {width: 100%;
    /* height: auto; overflow: hidden; */
}
.banner img {width: 100%;}
.txt p {text-indent: 10px;}
.txt .research {
    background-color: #ddd; padding: 20px; margin: 10px auto;
    line-height: 20px;
}
.txt .leader {
    text-align: right; font-size: 1.5rem; color: #475775; margin-top: 20px;
}

/* pc */
@media all and (min-width: 1025px) {
    html {font-size: 16px;}
    .wrap {
        width: 1070px; margin: 0 auto;
        display: flex; gap: 10px;
        padding-top: 80px;
    }

    .btn_top {
        width: 50px; height: 50px;
        line-height: 50px; text-align: center; cursor: pointer;
        background-color: #475775; border: 1px solid white;
        position: fixed; bottom: 30px; right: 30px;
        z-index: 10;
    }
    .btn_top a {color: white;}

    .menu_pc {display: block; margin-right: 10px;}
    .content_wrap {width: 890px; }
    .menu_pc .top_menu {
        width: 170px; height: 60px; line-height: 60px;
        font-size: 1.25rem; text-align: center;
        background-color: #475775; color: white;
    }
    .menu_pc .bottom_menu {
        width: 170px; height: 170px;
        padding: 10px;
        border: 1px solid #475775; box-sizing: border-box;
    }
    .menu_pc .bottom_menu p {
        height: 30px; line-height: 30px;
        color: #999; text-align: center; cursor: pointer;
    }
    .menu_pc .bottom_menu p:first-child {color: #475775;}
    .nav {color: #999; text-align: left; padding-top: 0;}
    .nav_pc {display: block;}
    .nav_mobile {display: none;}
    
}