/* main */

.hero {
    position: relative;
    padding-bottom: 0;
    background: #000;
}

.hero::after {
    background: rgba(0, 0, 0, 10);
    background: linear-gradient(90deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.01) 100%);
}

.hero__sticky {
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 2000;
    overflow: hidden;
    overflow: clip;
}

.dock-media {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    will-change: transform, opacity;
    transition: transform 0s, opacity .4s ease-out;
    transform-origin: 50% 50%;
}

.dock-media__video {
    width: 100%;
    height: 100vh;
    object-fit: cover;
}

.dock-media.is-faded {
    opacity: 0;
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .dock-media {
        transition: none;
    }
}


.mc_1 {
    padding: 250px 0px 70px;
    background: url(../img/mc_1_bg.jpg) #003569 no-repeat center / cover;
    position: relative;
    overflow: hidden;
}

.mc_1 .float {
    position: absolute;
    top: 60px;
    left: 50%;
    transform: translateX(-50%);
    max-width: 80vw;
    width: 100%;
}

.mc_1 .float img {
    width: 100%;
}

.mc_1::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background: linear-gradient(0deg,
            rgba(0, 0, 0, 0) 0%,
            rgba(0, 0, 0, 0.97) 12%,
            rgba(7, 0, 0, 0.97) 74%,
            rgba(0, 0, 0, 0) 94%);
    background-blend-mode: multiply;
    z-index: -1;
}

.mc_1 .inner {
    max-width: 1600px;
    padding: 0px 40px;
    box-sizing: border-box;
    margin: 0 auto;
}

.mc_1 .card_swiper {overflow: visible;}

.mc_1 ul.cards {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.mc_1 ul.cards li {width: calc(20% - 16px);}

.mc_1 ul.cards li .card__media {
    position: relative;
}

.mc_1 ul.cards li .card__media img {
    width: 100%;
    transition: all 0.3s;
    z-index: 10;
}

.mc_1 ul.cards li.on {
    z-index: 100;
}

.mc_1 ul.cards li.on .card__media img {
    transform: scale(1.22);
}

.mc_1 ul.cards li .card_info {
    text-align: center;
    margin-top: 80px;
    opacity: 0;
    bottom: -50px;
    visibility: hidden;
    transition: all 0.5s;
    position: relative;
}

.mc_1 ul.cards li .card_info p {
    font-size: 34px;
    font-weight: 900;
    color: #fff;
    margin-bottom: 10px;
}

.mc_1 ul.cards li .card_info span {
    font-size: 21px;
    color: #fff;
    font-family: var(--font_1);
    left: 50%;
    position: absolute;
    transform: translateX(-50%);
    white-space: nowrap;
}

.mc_1 ul.cards li.on .card_info {
    opacity: 1;
    visibility: visible;
    bottom: 0px;
}


.mc_2 {
    padding: 300px 0px 250px;
    background: #F6F6F4;
}

.mc_2 .inner {
    padding: 0px 40px;
    box-sizing: border-box;
    max-width: 1520px;
    margin: 0 auto;
}

.mc_2 .item_1 {
    margin-bottom: 150px;
}


.mc_2 .item_1 .back_txt {position:  relative;}
.mc_2 .item_1 .back_txt img {width: 100%;}

.mc_2 .item_1 .back_txt_1 {bottom: -40px; z-index: 10;}
.mc_2 .item_1 .back_txt_2 {top: -40px;}


.mc_2 .item_1 .img_box {
    max-width: 940px;
    margin: 0 auto;
    position: relative;
    z-index: 5;
}

.mc_2 .item_1 .img_box img {
    width: 100%;
}

.mc_2 .item_2 {
    text-align: center;
}

.mc_2 .item_2 .title {
    margin-bottom: 80px;
}

.mc_2 .item_2 .title h3 {
    font-size: 68px;
    margin-bottom: 32px;
    color: var(--main);
}

.mc_2 .item_2 .title article {
    font-size: 24px;
    font-weight: 500;
    color: #00162A;
    line-height: 1.5;
    font-family: var(--font_1);
}

.mc_2 .item_2 .item_box ul {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.mc_2 .item_2 .item_box ul li {
    box-shadow: inset rgba(255, 255, 255, 0.2) 0px 8px 24px;
    width: calc(33.3% - 13px);
    border-radius: 12px;
    background: rgba(0, 51, 100, 7);
    overflow: hidden;
    background: linear-gradient(180deg, rgba(0, 51, 100, 1) 0%, rgba(1, 89, 255, 1) 100%);
    padding: 45px 35px 40px;
    box-sizing: border-box;
    position: relative;
    cursor: pointer;
}

.mc_2 .item_2 .item_box ul li::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background: #003769;
    opacity: 0.5;
    position: absolute;
    transition: 0.3s;
}

.mc_2 .item_2 .item_box ul li:hover::after {
    opacity: 0;
    visibility: hidden;
}

.mc_2 .item_2 .item_box ul li h4 {
    font-size: 42px;
    color: #fff;
    margin-bottom: 25px;
}

.mc_2 .item_2 .item_box ul li article {
    font-size: 18px;
    color: #fff;
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 50px;
}

.mc_2 .item_2 .item_box ul li .img_box {
    border-radius: 12px;
    overflow: hidden;
    margin-top: 43px;
}

.mc_2 .item_2 .item_box ul li .img_box img {
    width: 100%;
}


.mc_3 {
    padding: 123px 0px;
    background: #003769;
    position: relative;
}

.mc_3::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background: linear-gradient(180deg, rgba(0, 55, 105, 0) 0%, #005AFF 88.26%);
    z-index: 0;
}

.mc_3 .text_box {
    text-align: center;
    position: relative;
    z-index: 1;
}

.mc_3 .text_box p {
    font-size: 34px;
    color: #fff;
    margin-bottom: 16px;
}

.mc_3 .text_box h3 {
    font-size: 68px;
    color: #fff;
    margin-bottom: 65px;
}


.mc_4 {
    padding: 240px 0px;
    background: #F6F6F4;
}

.mc_4 .inner {
    max-width: 970px;
    margin: 0 auto;
}

.mc_4 .title {
    text-align: center;
    margin-bottom: 80px;
}

.mc_4 .title p {
    font-size: 34px;
    color: #00162A;
    margin-bottom: 12px
}

.mc_4 .title h3 {
    font-size: 68px;
    color: var(--main);
}

.mc_4 .img_box {
    position: relative;
    max-width: 44vw;
    margin: 0 auto 60px;
}

.mc_4 .img_box img {
    position: absolute;
    width: 26vw;
}

.mc_4 .img_box img.left {
    left: 0;
    z-index: 10;
}

.mc_4 .img_box img.right {
    right: 0;
    z-index: 5;
}

.mc_4 .text_box {
    background: #D1D9DF;
    border-radius: 12px;
}

.mc_4 .text_box .box {
    padding: 42px 72px;
    box-sizing: border-box;
}

.mc_4 .text_box h4 {
    font-size: 48px;
    color: #003569;
    margin-bottom: 35px;
    padding-bottom: 35px;
    border-bottom: 1px solid #003769;
    text-align: center;
}

.mc_4 .text_box h4 b {
    color: var(--main);
}

.mc_4 .text_box ul {
    max-width: fit-content;
    margin: 0 auto;
}

.mc_4 .text_box ul li {
    display: flex;
    gap: 30px;
    margin-bottom: 7px;
}

.mc_4 .text_box ul li:last-child {
    margin-bottom: 0;
}

.mc_4 .text_box ul li p {
    font-weight: 800;
    min-width: 115px;
    font-family: var(--font_1);
    font-size: 24px;
    color: #003769;
    line-height: 1.5;
}

.mc_4 .text_box ul li span {
    font-family: var(--font_1);
    font-size: 24px;
    color: #003769;
    line-height: 1.5;
}


.flow_section {
    --flow-speed: 35s;
    background: var(--main);
    position: relative;
    overflow: hidden;
}

.flow_section ul {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 20px 0;
    flex-wrap: nowrap;
    min-width: max-content;
    animation: flowScroll var(--flow-speed) linear infinite;
}

.flow_section ul li {
    font-size: 20px;
    color: #fff;
    white-space: nowrap;
}

/* 접근성: 모션 줄이기 선호 시 정지 */
@media (prefers-reduced-motion: reduce) {
    .flow_section ul {
        animation: none;
    }
}

@keyframes flowScroll {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}


.mc_5 {
    padding: 250px 0px;
    background: #003769;
    position: relative;
}

.mc_5::after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background: linear-gradient(180deg, #000000 0%, rgba(255, 255, 255, 0) 100%);
    background-blend-mode: multiply;
    z-index: 0;
}

.mc_5 .inner {
    max-width: 1520px;
    padding: 0px 40px;
    box-sizing: border-box;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.mc_5 .title {
    margin-bottom: 90px;
    text-align: center;
}

.mc_5 .title h3 {
    font-size: 68px;
    color: #fff;
}

.tab_box .tab_nav {
    margin-bottom: 80px;
}

.tab_box .tab_nav ul {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
}

.tab_box .tab_nav ul li a {
    font-size: 32px;
    padding: 10px 50px;
    box-sizing: border-box;
    background: #3E6689;
    border-radius: 100px;
    color: #B2C2D0;
    display: inline-block;
    transition: all 0.3s;
    cursor: pointer;
}

.tab_box .tab_nav ul li a:hover,
.tab_box .tab_nav ul li.active a {
    background: #2BBCFF;
    background: linear-gradient(90deg, rgba(43, 188, 255, 1) 0%, rgba(0, 90, 255, 1) 100%);
    box-shadow: inset rgba(255, 255, 255, 0.2) 0px 8px 24px;
    color: #fff;
}

.tab_box .tab_content {
    display: none;
    opacity: 0;
    transition: all 0.5s;
}

.tab_box .tab_content.active {
    display: block;
    opacity: 1;
}

.tab_box .tab_content .card_box ul li {
    margin-bottom: 80px;
    font-size: 40px;
    text-align: center;
}

.tab_box .tab_content .card_box ul li a {
    color: #fff;
}

.tab_box .tab_content .card_box ul li:hover img {
    transform: scale(1.05);
}

.tab_box .tab_content .card_box ul li img {
    width: 100%;
    transition: all 0.3s;
}

.tab_box .tab_content .card_box ul li:last-child {
    margin-bottom: 0;
}

.mc_6 {
    padding: 250px 0px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    position: relative;
}

.mc_6 .inner {
    max-width: 1520px;
    padding: 0px 40px;
    box-sizing: border-box;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.mc_6 .title {
    margin-bottom: 90px;
    text-align: center;
}

.mc_6 .title h3 {
    font-size: 68px;
    color: #fff;
}


/* responsive */

@media all and (max-width: 1280px) {

    .mc_1 {padding: 200px 0px 70px;}

}

@media all and (max-width: 1024px) {

    #header .gnb ul {gap: 15px;}
    #header .gnb ul li {min-width: 100px;}
    #header .gnb ul li a {font-size: 18px;}
    #header .gnb ul li img {height: 40px;}

    .mc_1 {padding: 150px 0px 70px;}
    .mc_1 ul.cards {gap: 0; flex-wrap: nowrap;}

    .mc_1 ul.cards li .card_info {margin-top: 70px;}
    .mc_1 ul.cards li .card_info p {font-size: 28px;}
    .mc_1 ul.cards li .card_info span {font-size: 20px;}
}

@media all and (max-width: 768px) {

    #header {display: none;}

    #dockMedia {
        left: 0 !important; right: 0 !important;
        margin: 0 !important; max-width: none !important;
      }
    
    .mc_1 {padding: 150px 0px 100px;}
    .mc_1 .inner {padding: 0px 65px;}
    .mc_1 ul.cards li.on .card__media img {}

    .mc_1 .float {max-width: calc(100% - 40px);}
}