@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap');
html, body { margin: 0; height: 100%; background: #05112b; font-family: "Poppins", system-ui; font-optical-sizing: auto; font-size: 15px; font-weight: 400; color: #fff; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; text-shadow: rgba(0,0,0,.01) 0 0 1px; }

.custom-container { width: 100%; padding: 0 50px; margin: 0 auto; }
.custom-container-2 { width: 100%; max-width: 1140px; margin: 0 auto; }
.slide-area { width: 90%; max-width: 900px; margin: 0 auto; }
.section { display: block; padding: 0 0 40px; position: relative; z-index: 100; }
.bg-gray { background: #f5f5f5; }
@media screen and ( max-width: 768px ) {
	.section { padding: 20px 0; }
}

.home-banner { width: 100%; height: 780px; max-height: 1080px; position: relative; margin-top: 144px; margin-bottom: 210px; }
.carousel.slide, .carousel-inner, .carousel-item { width: 100%; height: 100%; position: relative; padding: 0; margin: 0; }
.home-banner .video-container { width: 100%; height: 100%; position: relative; z-index: 0; }
.home-banner .video-container video { width: 100%; height: 100%; object-fit: cover; object-position: center center; position: absolute; left: 0; top: 0; }
.home-banner .tab-inside-banner { position: relative; margin-top: -450px; z-index: 100; }

.carousel-caption { width: 100%; height: 100%; background: url(../images/banner-mask.png) no-repeat left top; background-size: 100% 100%; text-align: left; padding-top: 70px; transform: translateX(-50%); left: 50%; top: 0px; color: #fff; margin: 0; position: absolute; z-index: 10; }
.carousel-indicators { text-align: center; justify-content: center; position: absolute; top: 280px; margin-bottom: 0; }
.carousel-indicators li { width: 10px; height: 10px; background: rgba(255,255,255,0.15); border-radius: 5px; margin: 0 4px; border: 0; }
.carousel-indicators li.active { width: 25px; background: rgba(255,255,255,1); }
.carousel-caption h4 { font-size: 25px; line-height: 29px; font-weight: 500; color: #fff; margin-bottom: 20px; }
.carousel-caption .cap-row { width: fit-content; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; gap: 10px; margin-bottom: 20px; }
.carousel-caption .cap-row img { width: 20px; }
.carousel-caption p { font-size: 15px; line-height: 19px; font-weight: 400; color: rgba(255,255,255,0.80); margin: 0; }
.carousel-caption p span { color: #ffa80b; }
.carousel-caption button.btn-banner, button.btn-yellow { width: fit-content; height: 33px; background: linear-gradient(to bottom, #ffe900, #ff9400); font-size: 14px; font-weight: 400; color: #000; padding: 0 17px; border: 0; border-radius: 17px; outline: 0; box-shadow: none; margin-top: 20px; }


.header-top { width: 100%; height: auto; position: fixed; left: 0; top: 0; z-index: 999; }
.top-nav-bg { width: 100%; height: auto; background: #05112b; top: 0; left: 0; z-index: 100; transition: all 0.3s ease-in-out; }
.top-nav { width: 100%; height: 93px; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; }
.top-nav .brand { width: 156px; margin-right: 20px; transition: all 0.3s ease-in-out; }
.top-nav .brand img { width: 100%; }

.top-nav .nav-group { width: fit-content; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; gap: 10px; margin-left: 115px; }
.top-nav .nav-group a.nav-link { width: fit-content; height: auto; display: flex; flex-direction: row; align-items: center; justify-content: center; font-size: 15px; line-height: 19px; font-weight: 400; color: rgba(255,255,255,0.60); text-decoration: none; padding: 5px 12px; background: transparent; }
.top-nav .nav-group a.nav-link.active, .top-nav .nav-group a.nav-link:hover { color: #fff; font-weight: 500; }

.top-nav .toggle-bar { width: 48px; height: 48px; font-size: 48px; text-align: center; line-height: 48px; color: rgba(255,255,255,0.55); cursor: pointer; margin-left: auto; display: none; }

.top-nav .nav-group .dropdown-menu { min-width: 150px; max-width: 100%; background: #13294B; padding: 16px; border: 0; border-radius: 8px; margin-top: -2px; }
.top-nav .nav-group .dropdown-menu.big { min-width: 410px; }
.top-nav .nav-group .dropdown-menu .form-row { width: 100%; }
.top-nav .nav-group .dropdown-menu a.dropdown-item { font-size: 14px; font-weight: 200; line-height: 20px; margin-bottom: 5px; color: #fff; text-decoration: none; padding: 0; transition: all 0.3s ease-in-out; }
.top-nav .nav-group .dropdown-menu a.dropdown-item:hover { background: transparent; color: rgba(255,255,255,0.5); }

.header-right { width: fit-content; display: flex; flex-direction: row; align-items: center; justify-content: flex-end; gap: 32px; margin-left: auto; }
.input-group.search { width: 272px; height: 37px; background: #fff; border-radius: 3px; padding: 0 15px; }
.input-group.search .input-group-prepend { font-size: 17px; padding: 0; color: #000; padding: 8px 0 0; border: 0; }
.input-group.search input.form-control { height: 100%; border: 0; background: 0; outline: 0; box-shadow: none; font-size: 15px; font-weight: 400; color: #000; padding: 0 15px; }
button.btn-notice { width: 24px; background: transparent; border: 0; outline: 0; box-shadow: none; padding: 0; position: relative; }
button.btn-notice .badge { width: fit-content; height: 16px; min-width: 16px; background: #b72d24; border-radius: 8px; font-size: 10px; font-weight: 400; color: #fff; display: flex; align-items: center; justify-content: center; padding: 0 5px; position: absolute; top: -6px; right: -10px; }
.view-top { width: fit-content; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; font-size: 15px; line-height: 19px; font-weight: 400; color: #ffa80b; gap: 10px; }
.view-top img { width: 24px; }

.subscribe-bg { width: 100%; height: auto; background: #7a086c; }
.subscribe-inner { width: 100%; height: 51px; display: flex; flex-direction: row; align-items: center; justify-content: space-between; font-size: 20px; line-height: 26px; font-weight: 600; color: #fff; }
.subscribe-inner button.btn-subscribe { width: fit-content; height: 35px; background: linear-gradient(-45deg, #b98e4c, #f3ebc4, #b98e4c); border: 0; border-radius: 18px; font-size: 15px; font-weight: 400; color: #05112b; padding: 0 30px; outline: 0; box-shadow: none; }

.carousel-heading { font-size: 20.8px; line-height: 25px; font-weight: 400; color: #fff; margin-bottom: 16px; }
.tab-btns { width: 100%; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; gap: 20px; }
.tab-btns button.tab-btn { width: calc((100% - 80px) / 5.5); height: 80px; padding: 0 16px; display: flex; flex-direction: row; align-items: center; justify-content: space-around; border: 0; border-radius: 8px; overflow: hidden; font-size: 16px; font-weight: 400; color: #fff; text-transform: uppercase; outline: 0; box-shadow: none; }
.tab-btns button.tab-btn.active { transform: scale(1.15); }
.tab-btns button.tab-btn img { width: 32px; }
.tab-btns button.tab-btn.allsub { background: #083f8f url(../images/all-subject-tab-bg.png) no-repeat left top; background-size: 100% 100%; }
.tab-btns button.tab-btn.science { background: linear-gradient(to right, rgb(217, 147, 1), rgb(254, 95, 155), rgb(32, 154, 247)), url(../images/science-tab-bg.png) no-repeat left top; background-size: 100% 100%; }
.tab-btns button.tab-btn.math { background: #ac3fff url(../images/maths-tab-bg.png) no-repeat left top; background-size: 100% 100%; }

.item-batch { width: 100%; height: auto; border-radius: 8px; overflow: hidden; }
.item-batch img { width: 100%; }

.video-thumb { width: 100%; height: auto; position: relative; }
.video-thumb .clip { width: 100%; height: auto; border-radius: 8px; overflow: hidden; }
.video-thumb .clip img { width: 100%; }
.video-thumb .thumb-over { width: 100%; height: 100%; position: absolute; left: 0; top: 0; }
.video-thumb .thumb-over .tag { width: fit-content; height: 23px; font-size: 12.8px; line-height: 23px; font-weight: 400; color: #fff; border-radius: 3px; padding: 0 8px; position: fixed; left: 8px; top: 5px; }
.video-thumb .thumb-over .tag.science { background: linear-gradient(to right, rgb(217, 147, 1), rgb(254, 95, 155), rgb(32, 154, 247)); }
.video-thumb .thumb-over .tag.math { background: #ac3fff; }
.video-thumb .thumb-over .right-icon { width: 16px; position: absolute; top: 0; right: 8px; }
.video-thumb .thumb-over .bottom-icon { width: 20px; position: absolute; right: 8px; bottom: 5px; }
.video-thumb .thumb-over .progress { width: calc(100% - 16px); height: 3.2px; background: rgba(255,255,255,0.2); border-radius: 2px; position: absolute; transform: translateX(-50%); left: 50%; bottom: 1px; }
.video-thumb .thumb-over .progress .progress-bar { border-radius: 2px; background: #78d86b; }

.owl-custom .owl-nav { width: calc(100% + 96px); height: 1px; display: flex; flex-direction: row; align-items: center; justify-content: space-between; position: absolute; margin: 0; transform: translate(-50%, -50%); left: 50%; top: 50%; }
.owl-custom .owl-nav button { width: 48px; height: 48px; padding: 0; margin: 0 !important; background: transparent !important; border: 0; outline: 0; box-shadow: none; position: relative; opacity: 0; transition: all 0.3s ease-in-out; }
.owl-custom:hover button { opacity: 1; }
.owl-custom .owl-nav button.disabled { opacity: 0; }
.owl-custom .owl-nav button span { font-size: 0; }
.owl-custom .owl-nav button.owl-next::before,
.owl-custom .owl-nav button.owl-prev::before { content: ''; position: absolute; left: 0; top: 0; width: 100%; height: 100%; background-color: transparent; background-image: url(../images/carousel-arrow-next.png); background-repeat: no-repeat; background-size: 16px 28px; background-position: center center; }
.owl-custom .owl-nav button.owl-prev::before { background-image: url(../images/carousel-arrow-prev.png); }

.book-item { width: 100%; height: auto; border-radius: 8px; overflow: hidden; }
.book-item img { width: 100%; }

.big-video-banner { width: 100%; display: block; position: relative; z-index: 0; }
.big-video-banner::before { content: ''; display: block; width: 100%; padding-top: 28%; position: relative; left: 0; top: 0; }
.big-video-banner .big-video-over { width: 100%; height: 100%; display: block; position: absolute; left: 0; top: 0; z-index: 2; }
.big-video-banner .big-video-over img { width: 100%; height: 100%; position: relative; left: 0; top: 0; }
.big-video-banner .big-video-over .text-area { width: 55%; display: block; position: absolute; transform: translateY(-50%); top: 50%; right: 20px; }
.big-video-banner .big-video-over h4 { font-size: 32px; line-height: 39px; font-weight: 400; color: #fff; margin-bottom: 20px; }
.big-video-banner .big-video-over p { font-size: 19px; line-height: 23px; font-weight: 300; color: rgba(255,255,255,0.90); }
.big-video-banner .big-video { width: 100%; height: 100%; display: block; position: absolute; left: 0; top: 0; z-index: 1; }
.big-video-banner .big-video video { display: none; width: 100%; height: 100%; object-fit: cover; object-position: center center; position: absolute; left: 0; top: 0; }
.big-video-banner .big-video .mute-btn { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; font-size: 24px; color: #fff; position: absolute; right: 28px; top: 28px; cursor: pointer; }
/* .big-video-banner .big-video .mute-btn i.show { display: block; }
.big-video-banner .big-video .mute-btn i { display: none; } */

@media screen and ( min-width: 992px ) and ( max-width: 1100px ) {
	.top-nav .nav-group a.nav-link { font-size: 12px; }
}

@media screen and ( max-width: 950px ) {
	.top-nav .dropdown { text-align: center;}
	.top-nav-bg.white { padding-top: 14px; }
	.top-nav .nav-group { width: calc(100% - 30px); background: #000; padding: 16px; border-radius: 16px; box-shadow: 0 0 5px #212121; flex-direction: column; align-items: center; justify-content: center; text-align: center; position: absolute; top: 60px; left: 15px; display: none; opacity: 0; transition: all 0.3s ease-in-out; }
	.top-nav .nav-group.white { background: #fff; }
	.top-nav .nav-group.show { display: flex; top: 80px; opacity: 1; }
	.top-nav .toggle-bar { display: block; }
	.top-nav .nav-group .dropdown-menu { position: relative !important; text-align: center; min-width: 390px; max-width: 390px; transform: translate3d(0, 0, 0) !important; margin: 0 auto; }
	.top-nav .nav-group .dropdown a.nav-link { margin: 0 auto; }
}

.img-frame { width: 100%; height: auto; border: 1px solid #e8e8e8; padding: 10px; }

h6 { font-size: 16px; line-height: 20px; font-weight: 300; margin-bottom: 8px; }
h2 { font-size: 32px; line-height: 38px; font-weight: 400; margin-bottom: 8px; }
h4 { font-size: 24px; line-height: 29px; font-weight: 300; margin-bottom: 8px; }
h5 { font-size: 20px; line-height: 24px; font-weight: 300; margin-bottom: 8px; }
p { font-size: 14px; line-height: 21px; font-weight: 300; margin-bottom: 16px; }
.divider { width: 100px; height: 1px; display: block; background: #000; margin: 24px 0; }
a.link { font-size: 16px; line-height: 21px; font-weight: 500; color: #13294B; text-decoration: none; margin-bottom: 16px; }

@media screen and ( max-width: 768px ) {
	h2 { font-size: 26px; line-height: 30px; }
	h4 { font-size: 20px; line-height: 24px; margin-bottom: 4px; }
	p { font-size: 13px; line-height: 20px; }
}
@media screen and ( max-width: 425px ) {
	.top-nav .nav-group .dropdown-menu, .top-nav .nav-group .dropdown-menu.big { min-width: 100%; max-width: 100%; }
}

.blue-flag { width: calc(100% + 15px); height: 80px; background: #13294B; margin-left: -15px; font-size: 37px; font-weight: 200; line-height: 80px; color: #fff; text-align: right; padding-right: 16px; }
.project-img { width: 100%; overflow: hidden; position: relative; }
.project-img::before { content: ''; width: 100%; padding-bottom: 55%; display: block; position: relative; left: 0; top: 0; }
.project-img img { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center center; position: absolute; left: 0; top: 0; }
.project-footer { width: 100%; height: auto; background: #f5f5f5; padding: 16px 8px 8px; }
.project-footer h4 { font-size: 14px; font-weight: 500; line-height: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.project-footer p { font-size: 14px; font-weight: 200; line-height: 18px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 0; }
@media screen and ( max-width: 1100px ) {
	.project-img::before { padding-bottom: 90%; }
}
@media screen and ( max-width: 425px ) {
	.project-img::before { padding-bottom: 55%; }
}

.project-update .owl-stage { padding: 10px 0; }
.project-update .project-vdo { width: 100%; height: auto; }
.project-update .project-vdo .yt-big { width: 100%; background: #000; overflow: hidden; position: relative; }
.project-update .project-vdo .yt-big::before { content: ''; width: 100%; padding-bottom: 75%; display: block; position: relative; left: 0; top: 0; }
.project-update .project-vdo .yt-big iframe { width: 100%; height: 100%; display: block; object-fit: cover; object-position: center center; position: absolute; left: 0; top: 0; }
.project-update .owl-item .yt-big { transform: scale(0.8); cursor: pointer; transition: all 0.3s ease-in-out; }
.project-update .owl-item.active.center .yt-big { transform: scale(1); box-shadow: 0 0 5px 5px #ccc; }
/* .project-update .owl-item:hover * { transform: scale(0.9); } */
.project-update .owl-nav { width: calc(100% + 70px); height: 0; display: flex; flex-direction: row; justify-content: space-between; margin: 0; position: absolute; transform: translate(-50%, -50%); left: 50%; top: calc(50% - 34px); }
.project-update .owl-nav button { width: 30px; height: 30px; background: #d7d7d7 !important; border: 0 !important; border-radius: 50% !important; margin: 0 !important; display: block; outline: 0 !important; box-shadow: none; cursor: pointer; }
.project-update .owl-nav button span { font-size: 25px; font-weight: 600; color: #fff; line-height: 30px !important;}
@media screen and ( max-width: 768px ) {
	.project-update .owl-stage { padding-bottom: 20px; }
	.project-update .owl-item * { transform: scale(0.95); }
}
@media screen and ( max-width: 425px ) {
	.project-update .owl-nav { width: 100%; }
}

.project-vdo { width: 100%; }

.award-item { width: 100%; display: block; text-align: center; }
.award-item .top-img { width: 100%; height: 100px; text-align: center; margin: 0 auto 8px; }
.award-item .top-img img { width: auto; height: 100%; margin: 0 auto; }
.article-item .top-img { width: 100%; margin-bottom: 8px; }
.article-item .top-img img { width: 100%; }
.award-item .project-footer, .article-item .project-footer { background: transparent; text-align: center; padding: 0; }
.award-item .project-footer p, .article-item .project-footer p { white-space: wrap; line-height: 20px; text-overflow: none; }
.article-item .project-footer a.link { font-size: 14px; display: block; margin: 10px auto 0; }

.subscribe-strip { width: 100%; background: #13294B; padding: 15px 0; margin-bottom: 32px; }
.subscribe-strip p { font-size: 16px; line-height: 20px; font-weight: 300; color: #fff; margin-bottom: 0; }
form.subscribe .input-group { width: 100%; height: 26px; position: relative; }
form.subscribe .input-group input.form-control { height: 100%; border: 0; border-radius: 0; font-size: 12px; font-weight: 400; color: 3000; padding: 0 5px; text-align: center; outline: 0; box-shadow: none; }
form.subscribe .input-group input.form-control::placeholder { letter-spacing: 2px; color: #808080; }
form.subscribe button.sub-submit { height: auto; background: #CFBA82; font-size: 16px; color: #fff; padding: 0 10px; border: 0; border-radius: 0; outline: 0; box-shadow: none; }

.footer-heading { width: 100%; height: 35px; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; font-size: 18px; line-height: 22px; font-weight: 500; margin-bottom: 32px; }
.footer-heading img { height: 35px; width: auto; }
.footer-links a { display: block; font-size: 14px; line-height: 21px; font-weight: 300; color: gray; text-decoration: none; margin-bottom: 3px; }
.footer-links a:hover { color: #212529; }

.social-links { width: fit-content; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; margin-top: 16px; }
.social-links a { width: 20px; margin-right: 5px; border: 0; }

.footer-more .more { width: 100%; display: block; font-size: 14px; font-weight: 300; padding-bottom: 16px; border-bottom: 1px solid #e8e8e8; cursor: pointer; }
.footer-more .more i { margin-right: 5px; }
.footer-more .collapse-area { padding-top: 16px; }
.collapse-area .footer-heading { font-size: 16px; margin-bottom: 16px; }

.footer-bottom { background: #13294B; padding: 16px 0; text-align: center; }
.footer-bottom p, .footer-bottom a { color: #fff; text-decoration: none; }

.social-side { width: 46px; height: auto; background: #fff; border-radius: 5px 0 0 5px; box-shadow: 0 0 4px #ccc; text-align: center; padding: 16px 0; position: fixed; transform: translateY(-50%); top: 50%; right: 0; z-index: 1000; }
.social-side a { display: block; font-size: 7px; line-height: 9px; font-weight: 500; color: #13294B; text-decoration: none; }
.social-side a img { width: 25px; display: block; margin: 0 auto; }
.social-side .side-sep { width: 21px; height: 1px; background: #000; display: block; margin: 5px auto; }
@media screen and ( max-width: 950px ) {
	.footer-bottom { padding-bottom: 80px; }
	.social-side { width: calc(100% - 30px); height: 48px; border-radius: 5px 5px 0 0; top: auto; bottom: 0; left: 50%; right: auto; transform: translateX(-50%); display: flex; flex-direction: row; align-items: center; justify-content: center; gap: 20px; }
	.social-side .side-sep { display: none; }
}

.chat-bubble { width: 100px; height: 100px; cursor: pointer; position: fixed; right: 12px; bottom: 16px; z-index: 1500; display: block; }

.chat-box { width: 387px; height: 82%; background: #fff; border-radius: 15px; position: fixed; right: 12px; bottom: 16px; z-index: 2000; display: none; }
.chat-box.show { display: block; }
.chat-box .chat-box-header { width: 100%; height: 72px; background: #474794; padding: 0 20px; border-radius: 15px 15px 0 0; display: flex; flex-direction: row; align-items: center; justify-content: flex-start; }
.chat-box .chat-box-header .logo { width: 45px; height: 45px; margin-right: 10px; }
.chat-box .chat-box-header .head-txt { width: calc(100% - 55px); display: block; }
.chat-box .chat-box-header .head-txt h4 { font-size: 14px; line-height: 18px; font-weight: 600; color: #fff; margin-bottom: 3px; }
.chat-box .chat-box-header .head-txt p { font-size: 12px; line-height: 16px; font-weight: 400; color: #fff; margin-bottom: 0; }
.chat-box .chat-box-header .chat-close { font-size: 15px; display: block; width: 15px; height: 15px; line-height: 15px; text-align: center; color: #fff; margin-left: auto; cursor: pointer; }
.chat-box .chat-box-body { width: 100%; height: calc(100% - 164px); }
.chat-box .chat-box-body .scroll-area { width: 100%; height: 100%; overflow-x: hidden; overflow-y: scroll; padding: 15px; display: flex; flex-direction: column; align-items: flex-start; justify-content: flex-end; }
.chat-box .chat-box-footer { width: 100%; height: 92px; border-top: 1px solid #e1e1e1; border-radius: 0 0 15px 15px; padding: 12px 16px; display: flex; flex-direction: row; align-items: center; justify-content: space-between; gap: 10px; }
.chat-box .chat-box-footer button.chat-foot-btn { width: 22px; height: 22px; font-size: 20px; line-height: 20px; background: transparent; border: 0; outline: 0; box-shadow: none; color: #747b7f; padding: 0; }
.chat-box .chat-box-footer input.form-control { height: 45px; background: transparent; border: 1px solid #dfe3e8; border-radius: 23px; outline: 0; box-shadow: none; padding: 0 18px; font-size: 13px; font-weight: 400; color: #000; }
.chat-box .chat-box-footer input.form-control::placeholder { color: gray; }
.chat-box .date { width: fit-content; height: 26px; background: #ededf5; border-radius: 13px; font-size: 13px; line-height: 17px; font-weight: 400; color: #384248; text-align: center; display: flex; align-items: center; justify-content: center; padding: 0 16px; margin: 0 auto 15px; }
.chat-box .chat { display: block; margin-bottom: 15px; }
.chat-box .chat-row { width: calc(100% - 20px); display: flex; flex-direction: row; align-items: flex-end; justify-content: flex-start; gap: 13px; margin-bottom: 4px; }
.chat-box .chat-row .dp { width: 24px; height: 24px; border: 1px solid #e1e1e1; border-radius: 50%; overflow: hidden; }
.chat-box .chat-row .chat-txt { width: calc(100% - 37px); height: auto; background: #dfe3e8; border-radius: 14px; padding: 12px 15px; font-size: 14px; line-height: 18px; font-weight: 400; color: #000; }
.chat-box .time { font-size: 12px; line-height: 16px; font-weight: 400; color: #384248; padding-left: 37px; }
@media screen and ( max-width: 425px ) {
	.chat-bubble { bottom: 60px; }
	.chat-box { width: calc(100% - 30px); height: 50%; right: 0; bottom: 0; }
}