* {
    box-sizing: border-box;
}
:root {
    --padding: 0 20px;
}
main {
    /* max-width: 1200px;
    width: 100%;
    margin: 6rem auto; */
    margin: 200px 0 70px;
}
body.fixed {
    overflow: hidden;
}
.tit {
    font-family: 'title';
}
.inner {
    max-width: 1200px;
    padding: 0 30px;
    height: 100%;
    width: 100%;
    margin: 0 auto;
}

/* header */
header {
    position: fixed;
    left: 0; top: 0;
    width: 100%; height: fit-content;
    background: #fff;
    z-index: 999;
}
/* header .header_inner {
    max-width: 1200px;
    padding: 0 30px;
    height: 100%;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto;
} */
header .top {
    display: flex;
    align-items: center;
    max-width: 1200px;
    padding: 0 30px;
    margin: 0 auto;
    width: 100%;
    height: 65px;
}
header .top img {
    display: block;
    height: 37px;
}
header .btm_box {
    width: 100%;
    height: 80px;
    box-shadow: 0 -5px 10px -9px rgba(0, 0, 0, 0.1),
                0 5px 14px -5px rgba(0, 0, 0, 0.15);
}
header .btm_box .btm {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    padding: 0 30px;
    margin: 0 auto;
    height: 100%;
}
header .btm_box .btm li a {
    color: #BBBFC3;
    font-size: 16px;
    border-bottom: 3px solid transparent;
    padding-bottom: 5px;
}
header .btm_box .btm li.on a {
    color: #354E7E;
    border-color: #1073BF;
}
.menu_ico {
    display: none;
    position: absolute;
    right: 2rem; top: 50%;
    transform: translateY(-50%);
    width: 2.5rem; height: 2.5rem;
    background: url(../img/ham.png) no-repeat center/contain;
}
.nav_back {
    display: none;
    position: fixed;
    left: 0; top: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 9990;
}
nav {
    display: none;
    position: fixed;
    right: 0; top: 0;
    width: 68%; min-height: 100%;
    background: #fff;
    z-index: 9999;
}
.nav_top {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav_top a {
    display: block;
    height: 3.2rem;
}
.nav_top a img {
    display: block;
    height: 100%;
}
.nav_top .close_ico {
    display: block;
    width: 2.2rem; height: 2.2rem;
    background: url(../img/close.png) no-repeat center/contain;
}
.nav_list {
    margin-top: 2rem;
    padding: 0 1.5rem;
}
.nav_list li a {
    display: block;
    font-size: 1.6rem;
    color: #AFB3B8;
    padding: 2.5rem 1.5rem;
    border-bottom: 1px solid #CFCFCF;
}
.nav_list li.on a {
    border-color: transparent;
    background: #07D3FF;
    color: #fff;
    border-radius: 1.5rem;
}



/* index */
.index_blue {
    font-size: 19px;
    color: #00CFFF;
    font-family: 'title-a';
    margin-bottom: 20px;
}
.index_banner {
    height: 470px;
    background: url(../img/img.png) no-repeat 100% 90% / 600px;
}
.index_banner h1 {
    font-size: 35px;
    font-family: 'godic-f';
    line-height: 1.5;
    margin-bottom: 25px;
}
.index_banner p {
    font-size: 17px;
    color: #4F5460;
    line-height: 1.4;
}
.index_btns {
    background: #FAFCFC;
    padding: 60px 0;
}
.index_btns .left {
    width: 20%;
    margin-right: 30px;
}
.index_btns .left h2 {
    font-size: 27px;
    font-family: 'godic-f';
    margin-bottom: 20px;
}
.index_btns .left p {
    font-size: 17px;
    color: #515662;
    line-height: 1.4;
}
.inner.index {
    display: flex;
}
.index_btns_list {
    display: none;
}
.inner.index > .right {
    display: flex;
    align-items: center;
    width: 100%;
}
.inner.index .right ul {
    width: calc(50% - 30px);
}
.inner.index .right ul li {
    height: 270px;
    margin-bottom: 30px;
}
.inner.index .right ul li a {
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    height: 100%; width: 100%;
    justify-content: center;
    align-items: center;
}
.inner.index .right .left li:nth-child(1) a{
    background: url(../img/img-1.png) no-repeat center/cover;
}
.inner.index .right .left li:nth-child(2) a{
    background: url(../img/img-2.png) no-repeat center/cover;
}
.inner.index .right .left li:nth-child(3) a{
    background: url(../img/img-3.png) no-repeat center/cover;
}
.inner.index .right .right li:nth-child(1) a{
    background: url(../img/img-4.png) no-repeat center/cover;
}
.inner.index .right .right li:nth-child(2) a{
    background: url(../img/img-5.png) no-repeat center/cover;
}
.inner.index .right ul li a p {
    color: #fff;
    font-family: 'godic-d';
    font-size: 19px;
    text-align: center;
    margin-bottom: 30px;
}
.inner.index .right ul li a span {
    display: block;
    text-align: center;
    background: #fff;
    font-size: 15px;
    padding: 8px 11px;
    border-radius: 15px;
}

/* sub */
.sub_tit {
    color: #00D0FF;
    font-size: 19px;
    font-family: 'title-a';
    margin-bottom: 20px;
}
.sub_title {
    font-size: 30px;
    font-family: 'godic-f';
    border-bottom: 1px solid #CDCDCD;
    padding-bottom: 25px;
}
.sub_box {
    padding-top: 25px;
}
.sub_sub_tit {
    color: #1A7AC1;
    font-size: 20px;
    font-family: 'godic-e';
    padding: 35px 0 10px;
}
.sub_cont {
    line-height: 1.5;
    font-size: 16px;
    color: #515663;
}
.sub_cont .point3 {
    color: #1AD6FF;
    font-size: 17px;
}
.index_btns .left p.mo {
    display: none;
}



@media screen and (max-width: 934px) {
    header .btm_box {
        display: none;
    }
    .menu_ico {
        display: block;
    }
    main {
        margin: 9rem 0 6rem;
    }
    .index_banner h1 {
        font-size: 3rem;
    }
    .index_banner {
        height: 53rem;
        background-position: 50% 100%;
    }
    .inner.index {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 3rem;
    }
    .index_btns .left {
        width: auto;
        text-align: center;
    }
    .index_btns .left p.pc {
        display: none;
    }
    .index_btns .left p.mo {
        display: block;
    }
    .inner.index > .right {
        display: none;
    }
    .index_btns_list {
        display: block;
        width: 100%;
    }
    .index_btns_list li {
        height: 30rem;
        margin-bottom: 2rem;
    }
    .index_btns_list li a {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-direction: column;
        width: 100%; height: 100%;
        border-radius: 2rem;
        gap: 3rem;
    }
    .index_btns_list li a p {
        color: #fff;
        font-size: 2.3rem;
        font-family: 'godic-e';
    }
    .index_btns_list li a span {
        font-size: 1.6rem;
        background: #fff;
        padding: .9rem 1.3rem;
        border-radius: 2rem;
    }
    .inner.index .index_btns_list li:nth-child(1) a{
        background: url(../img/img-1.png) no-repeat center/cover;
    }
    .inner.index .index_btns_list li:nth-child(2) a{
        background: url(../img/img-2.png) no-repeat center/cover;
    }
    .inner.index .index_btns_list li:nth-child(3) a{
        background: url(../img/img-3.png) no-repeat center/cover;
    }
    .inner.index .index_btns_list li:nth-child(4) a{
        background: url(../img/img-4.png) no-repeat center/cover;
    }
    .inner.index .index_btns_list li:nth-child(5) a{
        background: url(../img/img-5.png) no-repeat center/cover;
    }
    .sub_title {
        font-size: 2.5rem;
    }
    .sub_sub_tit {
        font-size: 1.9rem;
    }
}

@media screen and (max-width: 563px) {
    .index_banner {
        background-size: 50rem;
    }
    .index_banner h1 {
        font-size: 2.6rem;
    }
}

@media screen and (max-width: 465px) {
    header .top {
        padding: 0 2rem;
    }
    .inner {
        padding: 0 2rem;
    }
    .index_banner {
        height: 44rem;
        background-size: 40rem;
    }
    .index_banner h1 {
        font-size: 2.3rem;
    }
    .index_banner p {
        font-size: 1.6rem;
    }
    .index_btns .left h2 {
        font-size: 2.3rem;
    }
    .index_btns .left p {
        font-size: 1.6rem;
    }
    .index_btns_list li a p {
        font-size: 2rem;
    }
    .index_btns_list li a span {
        font-size: 1.4rem;
    }
}