* {
    box-sizing: border-box;
}
:root {
    --padding: 0 20px;
}
main {
    margin-top: 120px;
    background: #fff;
    padding-bottom: 50px;
}
.inner {
    max-width: 1100px;
    padding: 0 15px;
    height: 100%;
    width: 100%;
    margin: 0 auto;
}
.fixed {
    overflow: hidden;
}

/* header */
header {
    position: fixed;
    left: 0; top: 0;
    width: 100%; height: 70px;
    background: #fff;
    z-index: 9990;
    box-shadow: 0px 3px 5px -2px rgba(0, 0, 0, 0.1);
}
header .header_inner {
    position: relative;
    max-width: 1100px;
    padding: 0 15px;
    height: 100%;
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
}
header .header_inner a {
    display: block;
    height: 40px;
}
header .header_inner a img {
    height: 100%;
}
header .menu_open {
    position: absolute;
    right: 1.5rem; top: 50%;
    transform: translateY(-50%);
    display: block;
    width: 35px; height: 35px;
    background: url(../img/menubar.png) no-repeat center/contain;
    cursor: pointer;
}
.back {
    display: none;
    position: fixed;
    left: 0; top: 0;
    width: 100%; height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    z-index: 9995;
}
.back.on {
    display: block;
}
nav {
    position: fixed;
    right: -100%; top: 0;
    width: 30%; height: 100%;
    z-index: 9999;
    transition: .2s ease-in-out;
}
nav .nav_box {
    background: #fff;
    padding: 20px 25px;
    height: 100%;
}
nav .nav_box .top {
    text-align: right;
    margin-bottom: 25px;
}
nav .nav_box .top .close_ico {
    cursor: pointer;
    display: inline-block;
    width: 22px; height: 22px;
    background: url(../img/menubar_icon.png) no-repeat center/contain;
}
.nav_list li a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 25px 0;
    border-bottom: 1px solid #CCCCCC;
    background: url(../img/arrow-3.png) no-repeat right / 20px;
}
.nav_list li:first-child a {
    border-top: 1px solid #CCCCCC;
}
.nav_list li.on a {
    background-image: url(../img/arrow-2.png);
}
.nav_list li a .ico {
    display: block;
    width: 27px; height: 27px;
    background: url(../img/sub_icon.png) no-repeat center/contain;
}
.nav_list li a span {
    color: #333333;
    display: block;
    font-size:  20px;
}
.nav_list li.on a span {
    color: #003325;
    font-weight: 700;
    background: linear-gradient(transparent 0%, transparent 50%, #CCDAAD 50%, #CCDAAD 100%);
}

/* index */
.index_top {
    height: 270px;
    position: relative;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    width: 100%;
    margin-bottom: 50px;
}
.index_top p {
    position: absolute;
    left: 0;
}
.index_top .deco_text {
    top: 40px;
    font-size: 140px;
    color: #E5EBEA;
    font-weight: 700;
}
.index_top .info_text {
    left: 20px; top: 65%;
    transform: translateY(-50%);
    font-size: 23px;
    line-height: 1.4;
}
.index_top .info_text span {
    font-size: 25px;
    color: #007EE2;
    font-weight: 700;
}
.index_top img {
    display: block;
    height: 100%;
    object-fit: contain;
    position: relative;
    z-index: 1;
}
.index_cont {
    background: #FBFDF8;
    padding: 50px 0;
}
.index_cont.mo {
    display: none;
}
.cont_list {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}
.cont_list li {
    width: calc(50% - 30px);
}
.cont_list li.cont {
    display: flex;
    flex-direction: column;
    padding: 0 20px;
}
.cont_list li img {
    display: block;
    width: 100%;
}
.cont_list li .ico {
    display: block;
    width: 25px; height: 25px;
    background: url(../img/main_icon1.png) no-repeat center/contain;
}
.cont_list li h2 {
    font-size: 35px;
    color: #015442;
    font-weight: 700;
    margin-bottom: 20px;
}
.cont_list li p {
    font-size: 18px;
    color: #7F7F7F;
    line-height: 1.4;
}
.index_btns {
    margin-top: 100px;
    padding-bottom: 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.index_btns li {
    width: 50%;
}
.index_btns li a {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 35px 30px;
}
.index_btns li:nth-child(1) a {
    background: url(../img/main_img2.png) no-repeat center/cover;
}
.index_btns li:nth-child(2) a {
    background: url(../img/main_img3.png) no-repeat center/cover;
} 
.index_btns li:nth-child(3) a {
    background: url(../img/main_img4.png) no-repeat center/cover;
} 
.index_btns li:nth-child(4) a {
    background: url(../img/main_img5.png) no-repeat center/cover;
}
.index_btns li a p {
    font-size: 17px;
    color: #fff;
}
.index_btns li a .arrow {
    display: block;
    width: 20px; height: 20px;
    background: url(../img/arrow.png) no-repeat center/contain;
}

/* sub */
.sub_top {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 50px;
}
.sub_top .deco {
    position: absolute;
    left: 0; top: 40%;
    transform: translateY(-50%);
    font-size: 100px;
    color: #E5EBEA;
    font-weight: 700;
}
.sub_top h1, .sub_top img {
    position: relative;
    z-index: 1;
}
.sub_top h1 {
    font-size: 50px;
    color: #0081E2;
    font-weight: 700;
}
.sub_top img {
    max-width: 45%;
    width: 100%;
    height: 90%;
    object-fit: contain;
}
.sub_cont {
    background: #FBFDF8;
    padding-top: 70px;
}
.cont_top {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}
.cont_top .tit {
    font-size: 23px;
    color: #005240;
    background: linear-gradient(transparent 0%, transparent 50%, #CCDAAD 50%, #CCDAAD 100%);
}
.cont_top .ico {
    display: block;
    width: 25px; height: 25px;
    background: url(../img/sub_icon.png) no-repeat center/contain;
}
.cont_top .line {
    flex-grow: 1;
    height: 1px;
    background: #9EB763;
}
.sub_contents {
    font-size: 16px;
    color: #7F7F7F;
    line-height: 1.4;
    display: block;
    padding-bottom: 50px;
}
.sub_contents .point3 {
    font-size: 16px;
    color: #0079E1;
}










@media screen and (max-width: 767px) {
    header {
        height: 6rem;
    }
    header .header_inner a {
        height: 3.3rem;
    }
    header .menu_open {
        width: 3rem; height: 3rem;
    }
    nav {
        width: 68%;
    }
    nav .nav_box {
        padding: 2rem;
    }
    nav .nav_box .top .close_ico {
        width: 2rem; height: 2rem;
    }
    .nav_list li a {
        background-size: 1.5rem;
    }
    .nav_list li a .ico {
        width: 2.3rem; height: 2.3rem;
    }
    .nav_list li a span {
        font-size: 1.9rem;
    }
    main {
        margin-top: 10rem;
    }
    .index_top {
        height: 35rem;
    }
    .index_top img {
        width: 60%; height: auto;
    }
    .index_top {
        justify-content: space-between;
        flex-direction: column;
    }
    .index_top .info_text {
        position: static;
        transform: translateY(0);
        font-size: 1.8rem;
        text-align: center;
    }
    .index_top .info_text span {
        font-size: 2rem;
    }
    .index_top .deco_text {
        font-size: 5rem;
        left: 50%; top: 65%;
        transform: translateX(-50%);
    }
    .index_cont {
        display: none;
    }
    .index_cont.mo {
        display: block;
    }
    .cont_list {
        flex-direction: column;
        gap: 2rem;
    }
    .cont_list li {
        width: 100%;
    }
    .cont_list li.cont {
        justify-content: center;
        align-items: center;
    }
    .cont_list li p {
        text-align: center;
        font-size: 1.5rem;
        margin-bottom: 5rem;
    }
    .index_btns {
        margin-top: 0;
        flex-direction: column;
        padding-bottom: 0;
    }
    .index_btns li {
        width: 100%;
    }
    .sub_top {
        flex-direction: column-reverse;
        gap: 6rem;
    }
    .sub_top img {
        max-width: 100%;
    }
    .sub_top h1 {
        font-size: 4rem;
    }
    .sub_top .deco {
        font-size: 5rem;
        top: 80%; left: 50%;
        transform: translateX(-50%);
    }
    .sub_cont {
        padding-top: 3rem;
    }
    .cont_top .tit {
        background: none;
        line-height: 1.3;
    }
    .cont_top .line {
        display: none;
    }
    .cont_top .ico {
        display: none;
    }
}