/* main_visual */
.main_visual { position: relative; width: 100%; height: 100vh; overflow: hidden; background: #000; }
.main_visual_video { position: absolute; top: 50%; left: 50%; width: 100%; height: 100%; object-fit: cover; transform: translate(-50%, -50%); }
.main_visual_overlay { position: absolute; inset: 0; z-index: 1; background: linear-gradient( to bottom, rgba(0,0,0,0.12) 0%, rgba(0,8,22,0.08) 35%, rgba(0,18,48,0.45) 68%, rgba(2,23,56,0.95) 100% ); }
.main_visual_overlay::after { content: ""; position: absolute; left: 0; bottom: -1px; width: 100%; height: 260px; background: linear-gradient( to top, #021738 0%, rgba(2,23,56,0.88) 22%, rgba(2,23,56,0.35) 62%, rgba(2,23,56,0) 100% ); }
.main_visual_cont { position: relative; z-index: 2; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.main_visual_txt h2 { letter-spacing: -0.04em; line-height: 1.2; text-shadow: 0 10px 40px rgba(0,0,0,0.45); }
.main_visual_scroll { position: absolute; left: 50%; bottom: 50px; transform: translateX(-50%); z-index: 5; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.main_visual_scroll span { font-size: 12px; font-weight: 600; letter-spacing: 0.24em; color: rgba(255,255,255,0.72); }
.main_visual_scroll_icon { position: relative; width: 24px; height: 42px; border: 1px solid rgba(255,255,255,0.45); border-radius: 100px; }
.main_visual_scroll_icon::before { content: ""; position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; border-radius: 100px; background: #fff; transform: translateX(-50%); animation: scrollDown 1.8s infinite; }
@keyframes scrollDown {

    0% { opacity: 0; transform: translate(-50%, 0); }
    30% { opacity: 1; }
    100% { opacity: 0; transform: translate(-50%, 14px); }
}
@media screen and (max-width:1280px) {

    .main_visual_txt h2.sec_tit8 { font-size: 52px; }
}
@media screen and (max-width:768px) {

    .main_visual { height: 100svh; }
    .main_visual_txt h2.sec_tit8 { font-size: 34px; line-height: 1.35; }
    .main_visual_overlay::after { height: 180px; }
    .main_visual_scroll { bottom: 30px; }
}
/* main_visual */
/* main_partners */
.partner_section { position: relative; padding: 140px 0; background: #021738; overflow: hidden; }
.partner_top p { color: rgba(255,255,255,0.65); }
.partner_grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.partner_item { position: relative; height: 140px; border-radius: 20px; overflow: hidden; border: 1px solid rgba(255,255,255,0.08); background: rgba(255,255,255,0.03); backdrop-filter: blur(12px); display: flex; align-items: center; justify-content: center; transition: transform 0.45s ease, background 0.45s ease, border-color 0.45s ease, box-shadow 0.45s ease; }
.partner_item::before { content: ""; position: absolute; inset: 0; background: #fff; opacity: 0; transition: opacity 0.45s ease; }
.partner_item:hover { transform: translateY(-10px); background: #fff; border-color: rgba(255,255,255,0); box-shadow: 0 25px 50px rgba(0,0,0,0.28), 0 0 0 1px rgba(255,255,255,0.04); }
.partner_item:hover::before { opacity: 1; }
.partner_logo { position: relative; z-index: 3; width: 68%; display: flex; align-items: center; justify-content: center; transition: transform 0.45s ease; }
.partner_logo img { width: 100%; transition: opacity 0.45s ease, transform 0.45s ease; }
.partner_logo > img:first-child { opacity: 1; }
.partner_logo .color_logo { position: absolute; inset: 0; opacity: 0; transform: translateY(8px); }
.partner_item:hover .partner_logo { transform: translateY(-16px); }
.partner_item:hover .partner_logo > img:first-child { opacity: 0; transform: translateY(-8px); }
.partner_item:hover .partner_logo .color_logo { opacity: 1; transform: translateY(0); }
.partner_hover { position: absolute; left: 16px; right: 16px; bottom: 12px; z-index: 5; opacity: 0; transform: translateY(18px); transition: opacity 0.4s ease, transform 0.4s ease; }
.partner_hover_btn { height: 34px; padding: 0 6px 0 14px; border-radius: 100px; background: rgba(2,23,56,0.95); display: flex; align-items: center; justify-content: space-between; }
.partner_hover_btn span { font-size: 14px; font-weight: 500; letter-spacing: 0.08em; color: #fff; }
.partner_hover_icon { width: 22px; height: 22px; border-radius: 50%; background: #49b8ff; color: #021738; display: flex; align-items: center; justify-content: center; font-size: 11px; transition: transform 0.35s ease; }
.partner_item:hover .partner_hover { opacity: 1; transform: translateY(0); }
.partner_item:hover .partner_hover_icon { transform: rotate(-45deg); }
@media screen and (max-width:1280px) {

    .partner_grid { grid-template-columns: repeat(3, 1fr); }
}
@media screen and (max-width:768px) {

    .partner_grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .partner_item { height: 120px; border-radius: 18px; }
    .partner_logo { width: 72%; }
    .partner_item:hover .partner_logo { transform: translateY(-14px); }
    .partner_hover { left: 12px; right: 12px; bottom: 12px; }
    .partner_hover_btn { height: 32px; padding: 0 5px 0 12px; }
    .partner_hover_btn span { font-size: 9px; }
    .partner_hover_icon { width: 20px; height: 20px; font-size: 10px; }
}
/* main_partners */







/* about_section */
.about_section { position: relative; overflow: hidden; padding: 180px 0; background: #021738; }
.about_section::before { content: ""; position: absolute; top: 50%; right: -2%; width: 70%; height: 1250px; transform: translateY(-50%); background: url(../images/main/about_section_bg.png) no-repeat center center; background-size: contain; opacity: 1; mix-blend-mode: screen; pointer-events: none; }
.about_wrap { position: relative; z-index: 5; display: flex; justify-content: space-between; gap: 120px; }
.about_left { width: 42%; flex-shrink: 0; }
.about_right { width: 58%; padding-top: 90px; }
.about_label { display: inline-block; font-weight: 700; color: #49b8ff; }
.about_right .about_txt { color: rgba(255,255,255,0.78); }
@media screen and (max-width:1480px) {

    .about_section::before { width: 980px; height: 980px; right: -10%; }
}
@media screen and (max-width:1024px) {

    .about_section { padding: 120px 0; }
    .about_wrap { flex-direction: column; gap: 60px; }
    .about_left, .about_right { width: 100%; }
    .about_right { padding-top: 0; }
    .about_section::before { width: 720px; height: 720px; right: -38%; opacity: 0.24; }
}
@media screen and (max-width:768px) {

    .about_section { padding: 90px 0; }
    .about_left h3.sec_tit9 { font-size: 52px; line-height: 1.15; }
    .about_section::before { width: 560px; height: 560px; right: -55%; opacity: 0.16; }
}
/* about_section */


/* video_section */
.video_section { position: relative; overflow: hidden; padding: 80px 0 150px 0; background: #021738; }
.video_bg { position: absolute; inset: 0; background: url('../images/main/video_section_bg.png') no-repeat center center; background-size: cover; opacity: 1; }
.video_wrap { position: relative; z-index: 5; display: flex; justify-content: center; }
.video_frame { position: relative; width: 100%; max-width: 1180px; border-radius: 24px; overflow: hidden; box-shadow: 0 30px 80px rgba(0,0,0,0.45), 0 0 0 1px rgba(255,255,255,0.04); }
.video_frame::before { content: ""; display: block; padding-top: 56.25%; }
.video_frame iframe { position: absolute; inset: 0; width: 100%; height: 100%; }
@media screen and (max-width:1024px) {

    .video_section { padding: 120px 0; }
    .video_frame { border-radius: 18px; }
}
@media screen and (max-width:768px) {

    .video_section { padding: 90px 0; }
    .video_frame { border-radius: 14px; }
}
/* video_section */


/* news_section */
.news_section { position: relative; padding: 180px 0 100px 0; }
.news_top { max-width: 1100px; margin: 0 auto; }
.news_label { display: inline-block; font-size: 18px; font-weight: 700; color: #49b8ff; }
.news_grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.news_item { display: block; background: #fff; border: 1px solid rgba(0,0,0,0.05); border-radius: 12px; overflow: hidden; transition: all 0.35s ease; }
.news_item:hover { transform: translateY(-8px); box-shadow: 0 20px 50px rgba(0,0,0,0.08); }
.news_thumb { position: relative; overflow: hidden; }
.news_thumb::before { content: ""; display: block; padding-top: 64%; }
.news_thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.news_item:hover .news_thumb img { transform: scale(1.06); }
.news_info { padding: 36px; }
.news_tit { color: #111; font-size: 24px; font-weight: 700; line-height: 1.45; letter-spacing: -0.03em; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-overflow: ellipsis; }
.news_date { display: block; margin-top: 40px; font-size: 16px; font-weight: 500; color: #b7b7b7; }
.news_sub_sec { padding:150px 0 80px 0; }
@media screen and (max-width:1280px) {

    .news_tit { font-size: 28px; }
    .news_info { padding: 28px; }
}
@media screen and (max-width:1024px) {

    .news_section { padding: 120px 0; }
    .news_grid { grid-template-columns: 1fr; }
}
@media screen and (max-width:768px) {

    .news_section { padding: 90px 0; }
    .news_tit { font-size: 22px; }
    .news_date { margin-top: 24px; font-size: 14px; }
}
/* news_section */

/* contact_section */
.contact_section { position: relative; overflow: hidden; padding: 220px 0; }
.contact_bg { position: absolute; inset: 0; background: url('../images/main/contact_bg.png') no-repeat center center/contain; opacity: 1; }
.contact_wrap { position: relative; z-index: 5; max-width: 1400px; margin: 0 auto; }
.contact_label { display: inline-block; font-size: 22px; font-weight: 700; color: #49b8ff; letter-spacing: -0.02em; }
.contact_wrap h3 { line-height: 1.45; letter-spacing: -0.04em; color: #111; }
.contact_btn { display: inline-flex; align-items: center; justify-content: center; min-width: 220px; height: 78px; padding: 0 48px; border-radius: 100px; background: #001b44; color: #fff; font-size: 22px; font-weight: 600; transition: all 0.35s ease; }
.contact_btn:hover { transform: translateY(-6px); background: #00357f; box-shadow: 0 20px 40px rgba(0,27,68,0.18); }
@media screen and (max-width:1280px) {

    .contact_section { padding: 180px 0; }
    .contact_btn { min-width: 190px; height: 68px; font-size: 20px; }
}
@media screen and (max-width:768px) {

    .contact_section { padding: 110px 0; }
    .contact_wrap h3.sec_tit7 { font-size: 36px; line-height: 1.4; }
    .contact_btn { min-width: 170px; height: 58px; font-size: 17px; padding: 0 34px; }
}
/* contact_section */





/* footer */
.main_footer { position: relative; background: #f3f3f3; padding: 120px 0; }
.main_footer_wrap { display: flex; align-items: flex-end; justify-content: space-between; gap: 80px; }
.main_footer_logo { font-size: 48px; font-weight: 700; line-height: 1; letter-spacing: -0.04em; color: #111; }
.main_footer_link { display: flex; align-items: center; gap: 40px; }
.main_footer_link a { font-size: 18px; font-weight: 600; color: #777; }
.main_footer_link a:hover { color: #111; }
.main_footer_right { text-align: right; }
.main_footer_info { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 18px 40px; }
.main_footer_info li { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 400; color: #8d8d8d; }
.main_footer_info li i { font-size: 18px; }
.main_footer_copy { font-size: 18px; font-weight: 400; color: #b3b3b3; }
@media screen and (max-width:1280px) {

    .main_footer_logo { font-size: 60px; }
    .main_footer_wrap { flex-direction: column; align-items: flex-start; }
    .main_footer_right { text-align: left; }
    .main_footer_info { justify-content: flex-start; }
}
@media screen and (max-width:768px) {

    .main_footer { padding: 70px 0; }
    .main_footer_logo { font-size: 42px; }
    .main_footer_link { gap: 24px; flex-wrap: wrap; }
    .main_footer_link a { font-size: 15px; }
    .main_footer_info { flex-direction: column; align-items: flex-start; gap: 14px; }
    .main_footer_info li { font-size: 16px; }
    .main_footer_copy { font-size: 14px; }
}
/* footer */