:root {
    --brand: #0c6f6b;
    --brand-dark: #07524f;
    --ink: #222b30;
    --muted: #6e767a;
    --line: #e5e9e8;
    --surface: #f5f7f6;
    --page-width: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-width: 320px;
    color: var(--ink);
    background: #fff;
    font: 16px/1.75 Arial, Helvetica, sans-serif;
    -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; text-decoration: none; transition: color .2s ease, background-color .2s ease, transform .2s ease; }
a:hover { color: var(--brand); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6, p { margin: 0; }
p + p { margin-top: 1.1em; }
input, textarea, button { font: inherit; }

.section_wrapper, .content_wrapper {
    width: min(calc(100% - 48px), var(--page-width));
    margin: 0 auto;
}
.column_spacing { padding: 92px 0; }
.title_site { text-align: center; margin-bottom: 46px; }
.saint_title { position: relative; display: inline-block; padding-bottom: 14px; font-size: 32px; font-weight: 600; line-height: 1.25; letter-spacing: .02em; }
.saint_title::after { position: absolute; bottom: 0; left: 50%; width: 42px; height: 3px; content: ""; background: var(--brand); transform: translateX(-50%); }
.title_color { color: var(--ink); }
.saint_title_sum { max-width: 920px; margin: 16px auto 0; color: var(--muted); }

/* Header and navigation */
header { position: relative; z-index: 20; height: 86px; background: #fff; box-shadow: 0 1px 7px rgba(0, 0, 0, .05); }
.head_wrapper { display: flex; align-items: center; justify-content: space-between; width: min(calc(100% - 48px), 1320px); height: 100%; margin: 0 auto; }
.head_login_div img { width: 202px; max-height: 58px; object-fit: contain; }
.head_menu_div > ul { display: flex; align-items: stretch; height: 86px; }
.head_menu_div > ul > li { position: relative; display: flex; align-items: stretch; }
.head_menu_div > ul > li > a { display: flex; align-items: center; padding: 0 20px; color: #2f3638; font-size: 15px; font-weight: 600; white-space: nowrap; }
.head_menu_div > ul > li > a::after { position: absolute; right: 20px; bottom: 0; left: 20px; height: 3px; content: ""; background: var(--brand); opacity: 0; transform: scaleX(.4); transition: opacity .2s ease, transform .2s ease; }
.head_menu_div > ul > li:hover > a, .head_menu_div > ul > li > a.active { color: var(--brand); }
.head_menu_div > ul > li:hover > a::after, .head_menu_div > ul > li > a.active::after { opacity: 1; transform: scaleX(1); }
.head_menu_sum { position: absolute; top: calc(100% - 1px); left: 0; width: 260px; padding: 10px 0; background: #fff; border-top: 2px solid var(--brand); box-shadow: 0 10px 24px rgba(14, 46, 44, .16); opacity: 0; visibility: hidden; transform: translateY(10px); transition: opacity .2s ease, visibility .2s ease, transform .2s ease; }
.head_menu_div li:hover .head_menu_sum { opacity: 1; visibility: visible; transform: translateY(0); }
.head_menu_sum span, .head_menu_sum a { display: block; }
.head_menu_sum a { padding: 9px 20px; color: #4d5657; font-size: 14px; line-height: 1.4; }
.head_menu_sum a:hover { color: #fff; background: var(--brand); }
.header_menu { display: none; }

/* Shared hero, breadcrumb and footer */
.saint_background_section { position: relative; height: 310px; overflow: hidden; color: #fff; background: #183b3a; }
.saint_background_section::after { position: absolute; inset: 0; content: ""; background: linear-gradient(90deg, rgba(5, 36, 35, .68), rgba(5, 36, 35, .22)); }
.saint_background_section > img { width: 100%; height: 100%; object-fit: cover; }
.saint_background_section .section_wrapper { position: absolute; z-index: 1; top: 0; right: 0; bottom: 0; left: 0; display: flex; align-items: center; }
.back_text h2 { font-size: clamp(34px, 4vw, 54px); font-weight: 600; letter-spacing: .02em; }
.saint_site_content { border-bottom: 1px solid var(--line); background: #fff; }
.saint_site_content .content_wrapper { display: flex; align-items: center; min-height: 56px; color: #798184; font-size: 14px; }
.saint_site_content a + a::before { padding: 0 10px; color: #b1b7b7; content: ">"; }
.saint_site_content a:last-child { color: var(--brand); }

footer { color: #d6dfde; background: #1d2d2e; }
.footer_wrapper { padding: 54px 0 44px; }
.footer_wrapper .section_wrapper { display: grid; grid-template-columns: minmax(220px, .9fr) minmax(420px, 1.5fr) .45fr; gap: 52px; align-items: center; }
.footer_logo_ img { width: 202px; filter: brightness(0) invert(1); }
.footer_logo_ h2 { margin-top: 17px; color: #fff; font-size: 18px; font-weight: 400; }
.footer_address h4 { margin-bottom: 12px; color: #fff; font-size: 17px; letter-spacing: .08em; }
.footer_address p { margin: 0 0 8px; font-size: 14px; line-height: 1.65; }
.footer_address span { display: inline-block; margin-right: 20px; }
.footer_contact_content { margin-bottom: 17px; }
.footer_address_content { padding-top: 17px; border-top: 1px solid rgba(255, 255, 255, .16); }
.footer_tel { width: 65px; height: 65px; margin-left: auto; border: 1px solid rgba(255, 255, 255, .45); border-radius: 50%; }
.footer_tel::before { display: grid; width: 100%; height: 100%; color: #fff; font-size: 29px; content: "☎"; place-items: center; }
.footer_copyright_content { border-top: 1px solid rgba(255, 255, 255, .12); background: #162425; }
.footer_copyright_content .section_wrapper { display: flex; align-items: center; justify-content: space-between; min-height: 63px; color: #aebaba; font-size: 13px; }
.footer_right_content { display: flex; gap: 12px; }
.footer_right_content a { display: grid; width: 27px; height: 27px; padding: 6px; border: 1px solid rgba(255, 255, 255, .35); border-radius: 50%; place-items: center; }
.footer_right_content a:hover { background: var(--brand); border-color: var(--brand); }
.footer_right_content img { width: 100%; height: 100%; filter: brightness(0) invert(1); }

/* Home page */
.home_slideshow, .banner, .banner_wrapper, .banner_wrapper .swiper-wrapper, .banner_wrapper .swiper-slide { width: 100%; }
.banner_image { position: relative; height: min(68vw, 760px); min-height: 430px; overflow: hidden; background-color: #143d3d; background-size: cover !important; }
.indexvideo { width: 100%; height: 100%; object-fit: cover; }
.home_product_advantage { background: #fff; }
.home_product_features_content ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.home_product_features_item { height: 100%; padding: 32px 28px; text-align: center; border: 1px solid var(--line); border-radius: 2px; transition: box-shadow .25s ease, transform .25s ease; }
.home_product_features_item:hover { box-shadow: 0 12px 28px rgba(16, 62, 60, .12); transform: translateY(-5px); }
.home_product_features_item_image { display: grid; height: 105px; margin-bottom: 18px; place-items: center; }
.home_product_features_item_image img { max-height: 100px; object-fit: contain; }
.home_products_features_item_title { margin-bottom: 10px; font-size: 21px; font-weight: 600; }
.home_products_features_item_intro { color: var(--muted); font-size: 14px; line-height: 1.7; }
.home_page_why { color: #fff; background: #244747; }
.home_page_why_content { display: grid; grid-template-columns: 1.08fr .92fr; min-height: 490px; }
.home_page_why_player { position: relative; min-height: 420px; background-size: cover !important; }
.home_page_why_text { display: flex; flex-direction: column; justify-content: center; max-width: 560px; padding: 72px 11vw 72px 72px; }
.home_why_title { color: #fff; }
.home_why_title::after { background: #a8d6cc; }
.home_why_introduce { margin-top: 26px; color: #d8e6e4; font-size: 15px; }
.home_more_btn { margin-top: 30px; }
.home_more_btn a, .home_more_content a, .products_display_more a { display: inline-flex; align-items: center; justify-content: center; min-width: 136px; min-height: 42px; padding: 8px 22px; color: #fff; background: var(--brand); font-size: 13px; font-weight: 600; letter-spacing: .03em; }
.home_more_btn a:hover, .home_more_content a:hover, .products_display_more a:hover { color: #fff; background: var(--brand-dark); }
.home_video_play_btn { position: absolute; top: 50%; left: 50%; display: grid; width: 76px; height: 76px; color: #fff; background: rgba(11, 93, 88, .9); border: 2px solid rgba(255, 255, 255, .75); border-radius: 50%; cursor: pointer; transform: translate(-50%, -50%); place-items: center; }
.home_video_play_btn i { width: 0; height: 0; margin-left: 5px; border-top: 10px solid transparent; border-bottom: 10px solid transparent; border-left: 15px solid currentColor; }
.home_page_application, .home_page_news { background: var(--surface); }
.home_page_solution_content ul, .home_page_news_content ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.home_solution_item, .home_page_news_item, .solution_display_item, .blog_infor_item, .saint_product_item { height: 100%; overflow: hidden; background: #fff; box-shadow: 0 2px 12px rgba(19, 48, 47, .07); transition: box-shadow .25s ease, transform .25s ease; }
.home_solution_item:hover, .home_page_news_item:hover, .solution_display_item:hover, .blog_infor_item:hover, .saint_product_item:hover { box-shadow: 0 14px 28px rgba(19, 48, 47, .17); transform: translateY(-5px); }
.home_solution_item_image, .home_page_news_item_image, .solution_display_image, .blog_infor_item_image, .saint_product_item_image { overflow: hidden; }
.home_solution_item_image img, .home_page_news_item_image img, .solution_display_image img, .blog_infor_item_image img, .saint_product_item_image img { width: 100%; aspect-ratio: 1.32; object-fit: cover; transition: transform .35s ease; }
a:hover .home_solution_item_image img, a:hover .home_page_news_item_image img, a:hover .solution_display_image img, a:hover .blog_infor_item_image img, a:hover .saint_product_item_image img { transform: scale(1.05); }
.home_solution_item_text { padding: 20px 22px 24px; }
.home_solution_item_title { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 18px; }
.home_solution_item_title h3 { font-size: inherit; font-weight: 600; }
.icon_more::before { color: var(--brand); content: "→"; font-size: 24px; font-style: normal; }
.home_solution_item_intro { margin-top: 9px; color: var(--muted); font-size: 14px; }
.home_page_news_item { position: relative; padding-bottom: 20px; }
.home_page_news_item_date, .blog_infor_item_date { padding: 16px 20px 0; color: var(--brand); font-size: 13px; }
.home_page_news_item_title, .blog_infor_item_title { padding: 5px 20px; color: var(--ink); font-size: 18px; font-weight: 600; line-height: 1.4; }
.home_page_news_item_more, .blog_infor_item_more { padding: 7px 20px 0; color: var(--muted); font-size: 13px; }
.home_page_news_item_more::after, .blog_infor_item_more::after { margin-left: 8px; color: var(--brand); content: "→"; }
.home_more_content { margin-top: 42px; text-align: center; }

/* Service, solutions and product/category lists */
.service_content_section .content_wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
.service_content_image img { width: 100%; }
.service_content_text .saint_title_content { margin-bottom: 25px; }
.service_content_introduce { color: var(--muted); }
.products_content_section { background: var(--surface); }
.product_display_list > ul > li { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; min-height: 370px; overflow: hidden; background: #fff; }
.product_display_list > ul > li:nth-child(even) .products_display_text { order: 2; }
.products_display_text { display: flex; flex-direction: column; justify-content: center; padding: 52px 9%; }
.products_display_title { margin-bottom: 17px; font-size: 27px; font-weight: 600; }
.products_display_txt { color: var(--muted); }
.products_display_more { margin-top: 25px; }
.products_display_image img { width: 100%; height: 100%; min-height: 370px; object-fit: cover; }
.saint_product_menu { border-bottom: 1px solid var(--line); background: #fff; }
.saint_product_menu ul { display: flex; justify-content: center; }
.saint_product_menu a { display: block; padding: 16px 30px; color: #596365; font-weight: 600; }
.saint_product_menu a:hover, .saint_product_menu a.active { color: var(--brand); }
.saint_product_content_list { width: min(calc(100% - 48px), var(--page-width)); margin: 0 auto; }
.saint_product_content_list > .content_wrapper { width: 100%; }
.saint_product_content_list ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.saint_product_item { position: relative; padding-bottom: 22px; }
.saint_product_item_image img { aspect-ratio: 1.15; }
.saint_product_item_name { padding: 18px 20px 0; font-size: 19px; font-weight: 600; line-height: 1.4; }
.saint_product_item_more { padding: 5px 20px 0; color: var(--brand); font-size: 13px; font-weight: 600; text-transform: uppercase; }
.solution_display_section ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.solution_display_text { padding: 17px 20px 20px; font-size: 18px; font-weight: 600; }

/* Detail pages and articles */
.product_introduce_section .content_wrapper { max-width: 1000px; }
.product_detail_image { margin-bottom: 48px; text-align: center; }
.product_detail_image img { max-width: 100%; margin: 0 auto; }
.product_detail_infor { padding: 0; }
.product_introduce_text, .blog_detail_container, .company_introduce, .contact_introduce { color: #50595c; }
.product_introduce_text img, .blog_detail_container img { max-width: 100%; height: auto; margin: 22px auto; }
.product_advantage_section { padding: 82px 0; background: var(--surface); }
.product_adv_display ul { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.product_adv_display_item { height: 100%; padding: 26px 17px; text-align: center; background: #fff; }
.products_adv_display_item_image { display: grid; height: 85px; place-items: center; }
.products_adv_display_item_image img { max-height: 75px; object-fit: contain; }
.products_adv_display_item_name { margin: 13px 0 10px; font-size: 17px; font-weight: 600; line-height: 1.35; }
.products_adv_display_item_text { color: var(--muted); font-size: 13px; line-height: 1.65; }
.blog_detail_content { max-width: 960px; margin: 0 auto; }
.blog_detail_title { color: var(--ink); font-size: clamp(26px, 3vw, 38px); font-weight: 600; line-height: 1.35; text-align: center; }
.blog_detail_time { margin: 13px 0 37px; color: #8a9294; font-size: 14px; text-align: center; }
.blog_detail_container { font-size: 16px; }
.blog_detail_container p { margin-bottom: 1.1em; }
.blog_content_section .home_more_content { margin-top: 55px; }
.blog_infor_section ul { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.blog_infor_item { padding-bottom: 20px; }
.blog_infor_item_image img { aspect-ratio: 1.5; }

/* Company, contact, customer search and form */
.company_content_section .content_wrapper, .customer_content_section .content_wrapper { max-width: 1000px; }
.company_introduce, .contact_introduce { font-size: 16px; }
.company_video_content { position: relative; height: min(43vw, 570px); min-height: 330px; overflow: hidden; background: #123; }
.company_video_content > img { width: 100%; height: 100%; object-fit: cover; }
.company_video_play { position: absolute; z-index: 1; inset: 0; }
.company_honor_content img { max-width: 100%; margin: 0 auto; }
.contact_introduce p { padding: 17px 0; border-bottom: 1px solid var(--line); }
.contact_follow_section { margin-top: 58px; }
.follow_content { display: flex; gap: 14px; margin-top: 22px; }
.follow_content a { display: grid; width: 38px; height: 38px; color: var(--brand); border: 1px solid var(--brand); border-radius: 50%; place-items: center; }
.follow_content a:hover { color: #fff; background: var(--brand); }
.customer_search_content { display: flex; max-width: 720px; margin: 0 auto; }
.sear_txt { flex: 1; min-width: 0; height: 48px; padding: 0 16px; color: var(--ink); border: 1px solid #cfd6d5; border-right: 0; outline: none; }
.sear_txt:focus { border-color: var(--brand); }
.sear_btn { min-width: 145px; color: #fff; background: var(--brand); border: 0; cursor: pointer; }
.sear_btn:hover { background: var(--brand-dark); }
.customer_search_results { margin-top: 52px; }
.search_title { margin-bottom: 16px; font-size: 21px; font-weight: 600; }
.customer_search_list { display: grid; grid-template-columns: 210px 1fr; gap: 25px; margin-top: 22px; padding: 22px; border: 1px solid var(--line); }
.customer_sear_item_image img { width: 100%; aspect-ratio: 1.2; object-fit: cover; }
.cus_name { display: flex; gap: 13px; padding: 5px 0; color: var(--muted); }
.cus_name h4 { min-width: 158px; color: var(--ink); font-size: 14px; }
.cus_tics { margin-top: 16px; color: var(--muted); font-size: 14px; }
.cus_tics a { color: var(--brand); text-decoration: underline; }
.table { width: 100%; border-collapse: collapse; }
.table th, .table td { padding: 12px; text-align: left; border: 1px solid var(--line); }
.table th { color: #fff; background: var(--brand); }

.saint_service_message_section { background: var(--surface); }
.saint_service_message_section .content_wrapper { max-width: 1000px; }
.mess_title_div { display: flex; align-items: center; justify-content: space-between; margin-bottom: 26px; }
.message_title_left { padding-bottom: 0; }
.message_title_left::after { display: none; }
.message_contact a { display: grid; width: 46px; height: 46px; color: #fff; background: var(--brand); border-radius: 50%; place-items: center; }
.message_form_content { padding: 35px; background: #fff; box-shadow: 0 4px 18px rgba(20, 56, 54, .08); }
.mess_input { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.mess_txt label, .mess_area label { display: block; margin-bottom: 7px; color: #475153; font-size: 14px; }
.input_s, .area_s { width: 100%; padding: 11px 13px; color: var(--ink); background: #fff; border: 1px solid #d7dddc; border-radius: 0; outline: none; }
.input_s { height: 45px; }
.area_s { min-height: 130px; resize: vertical; }
.input_s:focus, .area_s:focus { border-color: var(--brand); box-shadow: 0 0 0 2px rgba(12, 111, 107, .12); }
.mess_area { margin-top: 18px; }
.mess_btn { margin-top: 24px; text-align: center; }
.form_btn { min-width: 205px; min-height: 45px; padding: 10px 22px; color: #fff; background: var(--brand); border: 0; cursor: pointer; }
.form_btn:hover { background: var(--brand-dark); }

/* Video overlays */
.video_content, .video_pop_up { position: fixed; z-index: 100; inset: 0; display: none; align-items: center; justify-content: center; padding: 24px; background: rgba(0, 0, 0, .75); }
.video_content.show, .video_pop_up.show { display: flex; }
.video_content_play, .video_pop_content { position: relative; width: min(920px, 100%); background: #000; }
.video_play { width: 100%; max-height: calc(100vh - 80px); }
.video_close_btn, .video_pop_close { position: absolute; z-index: 2; top: -42px; right: 0; width: 30px; height: 30px; cursor: pointer; }
.video_close_btn::before, .video_close_btn::after, .video_pop_close::before, .video_pop_close::after { position: absolute; top: 14px; left: 1px; width: 29px; height: 2px; content: ""; background: #fff; transform: rotate(45deg); }
.video_close_btn::after, .video_pop_close::after { transform: rotate(-45deg); }

@media (max-width: 1024px) {
    .head_menu_div > ul > li > a { padding: 0 13px; font-size: 14px; }
    .head_menu_div > ul > li > a::after { right: 13px; left: 13px; }
    .home_page_why_text { padding-right: 46px; padding-left: 46px; }
    .product_adv_display ul { grid-template-columns: repeat(3, 1fr); }
    .footer_wrapper .section_wrapper { grid-template-columns: .85fr 1.6fr; }
    .footer_contact { display: none; }
}

@media (max-width: 760px) {
    body { font-size: 15px; }
    .section_wrapper, .content_wrapper, .saint_product_content_list { width: min(calc(100% - 32px), var(--page-width)); }
    .column_spacing { padding: 56px 0; }
    .title_site { margin-bottom: 32px; }
    .saint_title { font-size: 26px; }
    header { height: 70px; }
    .head_wrapper { width: calc(100% - 32px); }
    .head_login_div img { width: 157px; }
    .head_menu_div { position: absolute; top: 70px; right: 0; left: 0; display: none; background: #fff; box-shadow: 0 8px 16px rgba(0, 0, 0, .13); }
    .head_menu_div.open { display: block; }
    .head_menu_div > ul { display: block; height: auto; padding: 6px 0; }
    .head_menu_div > ul > li { display: block; }
    .head_menu_div > ul > li > a { min-height: 43px; padding: 0 24px; }
    .head_menu_div > ul > li > a::after { display: none; }
    .head_menu_sum { position: static; display: none; width: auto; padding: 0; border: 0; box-shadow: none; opacity: 1; visibility: visible; transform: none; }
    .head_menu_div li:hover .head_menu_sum { display: block; }
    .head_menu_sum a { padding: 8px 40px; }
    .header_menu { position: absolute; top: 0; right: 16px; display: flex; align-items: center; height: 70px; gap: 8px; color: var(--brand); font-size: 0; cursor: pointer; }
    .header_menu i, .header_menu i::before, .header_menu i::after { display: block; width: 24px; height: 2px; background: currentColor; content: ""; }
    .header_menu i { position: relative; }
    .header_menu i::before { position: absolute; top: -7px; }
    .header_menu i::after { position: absolute; top: 7px; }
    .saint_background_section { height: 210px; }
    .saint_site_content .content_wrapper { min-height: 48px; font-size: 13px; }
    .banner_image { height: 62vw; min-height: 275px; }
    .home_product_features_content ul, .home_page_solution_content ul, .home_page_news_content ul, .solution_display_section ul, .blog_infor_section ul, .saint_product_content_list ul { grid-template-columns: 1fr; gap: 18px; }
    .home_product_features_item { display: grid; grid-template-columns: 92px 1fr; gap: 14px; padding: 20px; text-align: left; }
    .home_product_features_item_image { height: 75px; margin: 0; }
    .home_product_features_item_image img { max-height: 70px; }
    .home_page_why_content, .service_content_section .content_wrapper, .product_display_list > ul > li { grid-template-columns: 1fr; }
    .home_page_why_player { min-height: 280px; }
    .home_page_why_text { max-width: none; padding: 54px 24px; }
    .home_page_why_text .saint_title { font-size: 27px; }
    .products_display_text { padding: 40px 25px; }
    .product_display_list > ul > li:nth-child(even) .products_display_text { order: initial; }
    .products_display_image img { min-height: 250px; }
    .saint_product_menu a { padding: 13px 18px; font-size: 14px; }
    .product_advantage_section { padding: 56px 0; }
    .product_adv_display ul { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .product_adv_display_item { padding: 19px 13px; }
    .company_video_content { height: 58vw; min-height: 260px; }
    .customer_search_content { display: block; }
    .sear_txt { width: 100%; border-right: 1px solid #cfd6d5; }
    .sear_btn { width: 100%; min-height: 46px; margin-top: 10px; }
    .customer_search_list { grid-template-columns: 1fr; padding: 16px; }
    .customer_sear_item_image { max-width: 280px; }
    .cus_name { display: block; }
    .cus_name h4 { margin-bottom: 2px; }
    .mess_input { grid-template-columns: 1fr; gap: 14px; }
    .message_form_content { padding: 23px 18px; }
    .footer_wrapper { padding: 42px 0 32px; }
    .footer_wrapper .section_wrapper { display: block; }
    .footer_address { margin-top: 29px; }
    .footer_copyright_content .section_wrapper { display: block; padding: 16px 0; text-align: center; }
    .footer_right_content { justify-content: center; margin-top: 12px; }
}