.main_video{
	position:relative;
	width:100%;
	/* height:100vh; */
    height: auto;
	overflow:hidden;
	padding-top:85px;
	box-sizing:border-box;
}

.main_video img {
    width: 100%;
}

video{
	width:100%;
	background-color:white;
}
.v_t_box{
	text-align:center;
	position:absolute;
	bottom:30px;
	left:50%;
	transform: translateX(-50%);
}
.v_t_box p:nth-child(2){
	position: relative;
	top:-5px;
}
.v_t_box img{
	position: relative;
	animation-name:down;
	animation-duration: 0.8s;
	animation-timing-function: linear;
	animation-iteration-count: infinite;
	animation-direction: alternate;
 }
@keyframes down {
  0%   {top:0px;}
  100%  {top:8px;}
}
 .main_video p{
	color:#44dbf1;
	font-size:14px;
 }
 
.section_wrap{
    padding:100px 0 40px 0;
    background:white
}

section .title{
    text-align: center;
}
.frist_title{
     padding-top:50px
}
section .title>div{
    display: inline;
}
section .title div img{
    padding-top:20px
}
section .title h2{
    font-size:32px
}
.inner{
    max-width: 1100px;
    width:100%;
    margin:0 auto;
    position:relative
}

/*main about*/
.main_aboutus{
    background: url('../images/main/main_about_bg.jpg') no-repeat center;
    background-size: cover;
}
.about_content{
    display: flex;
    justify-content: space-between;
    padding-top:90px
}
.about_left h3{
    /* font-size: 28px; */
    font-size: 22px;
    font-weight: 500;
    color:#414141;
    word-break: keep-all;
}
.about_left p {
    font-size: 22px;
    word-break: keep-all;
}
.about_left h3 span{
    font-weight: bold;
    color: #263996
}
.view_more{
    display: flex;
    align-content: center;
    align-items: center;
    padding-top:40px
}
.view_more p{
    font-weight: 500;
    padding-right:20px
}
.about_bot_box{
    flex-wrap: wrap;
    display: flex;
    justify-content: space-between;
    align-content: center;
    align-items: center;
    text-align: center;
    padding-top:40px;
    background:white;
    font-size: 18px;
    
}
.about_bot_box .about_list_circle{
    width:26px;
    height: 26px;
    border-radius: 50%;
    background:#102a8c;
    text-align: center;
    margin-bottom: 45px
}
.about_bot_box li p{
    padding-top:24px
}

/*main ups business*/
.ups_business{
    background: white;
}
.ups_view_more{
    justify-content: center;
    padding-top:20px;
}

/*main banner*/
.banner{
    width:100%;
    height: 300px;
}
.bg {
    position: fixed;
    top:0;
    left: 0;
    width:100%;
    height: 100%;
    background: url("../images/main/main_banner.jpg") no-repeat center center;
    background-size: cover;
    z-index: -1;
}

/*main defense business*/
.def_list_box li{
    position: relative;
    box-sizing: border-box;
	width:33.3333333%
}
.def_list_box li:hover .hover_box{
    display: block;
}
.def_list_box .hover_box{
    display: none;
    position: absolute;
    top:0;
    width:100%;
    height:100%;
    text-align: center;
    background: rgba(27,185,230, .4);
}
.hover_txt{
    color:white;
    padding-top:30%;
}
.hover_txt .hover_view_more_box{
    padding-top:40px;    
}
.hover_txt h3{
    font-weight: bold;
    font-size: 28px;
}
.hover_txt p{
    padding-right: 20px
}
.hover_view_more_box{
    display: flex;
    justify-content: center;
    align-content: center;
    align-items: center;
    color:white
}

/*main R&D*/
.rnd{
    background:white
}
.title p{
    padding:10px 0 35px 0;
    font-size: 22px;
}
.def_list_box{
    flex-wrap: wrap;
    display: flex;
    justify-content: center
}
.def_list_box li img{
	width:100%;
	height:auto;
}
.research_wrap{
    display: flex;
    justify-content: space-between;
}
.research_box{
    display: flex;
}
.rnd_txt_box{
    padding-left:20px    
}

/*main partner*/
.partenr{
    background: url("../images/main/main_bot.jpg")
}
.partenr_inner{
    max-width:1200px;
    width: 100%;
    display: block;
    margin: 0 auto;
    position: relative;
}
.swiper {
    margin:0 auto;
    max-width:1100px;
    height: 70px;
    overflow: hidden;
    text-align: center;
    position: relative
}
.prev_btn{
    background-image: url("../images/main/prev_btn.jpg");
    background-size: 30px 30px;
}
.next_btn{
    background-image: url("../images/main/next_btn.jpg");
    background-size: 30px 30px;
}

/*footer*/
footer{
    background-color: #132338
}
.footer_wrap{
    display: flex;
    justify-content: center;
    align-content: center;
    align-items: center;
    color:#b9c2ce
}
.footer_text{
     padding:40px
}
.footer_text p{
    text-align: center;
}
.footer_txt_top{
    font-weight: 500;
}
.footer_txt_top span{
    font-weight: 300
}
.footer_txt{
    font-weight: 300
}
.footer_last{
    font-size:13px;
    padding-top: 20px
}
.footer_last span{
    color:#72aac4
}

.andcolor{color:black !important}


.popup-overlay {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.3s ease;
}

/* 팝업 콘텐츠 */
.popup-content {
    position: relative;
    background: #000;
    padding: 10px;
    border-radius: 8px;
    max-width: 70%;
    width: 100%;
    max-height: 90%;
}


/* iframe 컨테이너 */
.iframe-container {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 비율 유지 */
}

/* iframe 스타일 */
.iframe-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: 8px;
}


.popup-overlay .videoTop {
    display: flex;
    max-width: 70%;
    width: 100%;
    justify-content: center;
    position: relative;
}

.popup-overlay .videoTop > button {
    margin: 0 0 10px 0;
    background-color: transparent;
    position: absolute;
    right: 0;
    top: 10px;
    padding: 0;
    font-size: 30px;
}

.popup-overlay .videoTop .popup-tab-buttons {
    width: 70%;
    background-color: white;
    border-radius: 15px;
    justify-content: space-between;
    padding: 5px;
}

.popup-overlay .videoTop .popup-tab-buttons .tab-btn {
    width: 49%;
    margin: 0;
    border-radius: 15px;
    background-color: transparent;
    color: #143a91;
    transition: background-color 0.3s ease, color 0.3s ease
}

.popup-overlay .videoTop .popup-tab-buttons .tab-btn:hover {
    background-color: #143a91;
    color: white;
}

.popup-overlay .videoTop .popup-tab-buttons .tab-btn.active {
    background-color: #143a91;
    color: white;
}