.crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--navy);font-weight:600}
.crumbs span:not(:where(.bt-background-image)){opacity:.5}
.page-hero{padding:28px 0 48px}
.page-hero h1{font-size:42px;line-height:1.12;letter-spacing:-.03em;color:var(--navy-ink);max-width:820px;--bt-max-width:820px}
.page-hero .lead{margin-top:16px;font-size:18px;color:var(--muted);max-width:640px;--bt-max-width:640px}
.page-hero .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.hero-media{margin-top:28px;border-radius:var(--radius-lg);overflow:hidden;background:linear-gradient(135deg,#1e2a57,#204593 45%,#2fb3dd);min-height:280px;position:relative}
.hero-media video,.hero-media span:where(.bt-background-image){width:100%;height:320px;--bt-css-height:320px;object-fit:cover;display:block}
.hero-media .ph{position:absolute;inset:0;display:flex;align-items:flex-end;padding:24px;color:#fff;font-weight:700;background:linear-gradient(180deg,transparent,rgba(22,34,63,.45))}
.hero-media--civil{min-height:0;aspect-ratio:16/6}
.hero-media--civil span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 62%;--bt-position:50% 62%}
.hero-media--machinery{min-height:0;aspect-ratio:16/6}
.hero-media--machinery span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 52%;--bt-position:50% 52%}
.hero-media--shipbuilding{min-height:0;aspect-ratio:16/6}
.hero-media--shipbuilding span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 55%;--bt-position:50% 55%}
.hero-media--industrial{min-height:0;aspect-ratio:16/6}
.hero-media--industrial span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 62%;--bt-position:50% 62%}
.hero-media--survey{min-height:0;aspect-ratio:16/6}
.hero-media--survey span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 46%;--bt-position:50% 46%}
.hero-media--tek{min-height:0;aspect-ratio:16/6}
.hero-media--tek span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 54%;--bt-position:50% 54%}
.hero-media--course{min-height:0;aspect-ratio:16/6}
.hero-media--course span:where(.bt-background-image){height:100%;--bt-css-height:100%;object-position:50% 43%;--bt-position:50% 43%}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.media-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.media-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.media-card .thumb{height:160px;--bt-css-height:160px;background:linear-gradient(135deg,#eaf1fb,#d5e8f4);position:relative;overflow:hidden}
.media-card .thumb span:where(.bt-background-image){width:100%;height:100%;--bt-css-height:100%;object-fit:cover;display:block}
.media-card .thumb--plain{display:flex;align-items:flex-end;padding:14px}
.media-card .thumb--plain span:not(:where(.bt-background-image)){font-size:12px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;color:var(--navy)}
.media-card .body{padding:18px 18px 20px;display:flex;flex-direction:column;gap:8px;flex:1}
.media-card h3{font-size:18px;line-height:1.3}
.media-card p{color:var(--muted);font-size:14.5px;flex:1}
.media-card .more{font-weight:700;color:var(--navy);font-size:14px}
.prose{max-width:760px;--bt-max-width:760px}
.prose--wide{max-width:none;--bt-max-width:100000px}
.prose.legal{max-width:820px;--bt-max-width:820px}
.prose.legal h2{font-size:22px;margin:28px 0 12px}
.prose.legal ol,.prose.legal ul{margin:10px 0 18px;padding-left:22px}
.prose.legal ol{list-style:decimal}
.prose.legal li{margin:8px 0}
.prose.legal a{color:var(--navy);font-weight:700;text-decoration:underline;text-underline-offset:2px}
.prose h2{font-size:28px;margin:8px 0 14px;color:var(--navy-ink)}
.prose p,.prose li{color:var(--muted);font-size:16.5px}
.prose ul{margin:12px 0 20px;padding-left:18px;list-style:disc}
.prose li{margin:6px 0}
.civil-page .prose h3 a,.civil-page .prose li a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.civil-page .prose h3 a:hover,.civil-page .prose li a:hover{color:var(--navy-ink)}
.civil-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.machinery-page .prose h3 a,.machinery-page .prose p a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.machinery-page .prose h3 a:hover,.machinery-page .prose p a:hover{color:var(--navy-ink)}
.machinery-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.shipbuilding-page .prose h3 a,.shipbuilding-page .prose p a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.shipbuilding-page .prose h3 a:hover,.shipbuilding-page .prose p a:hover{color:var(--navy-ink)}
.shipbuilding-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.industrial-construction-page .prose h3 a,.industrial-construction-page .prose p a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.industrial-construction-page .prose h3 a:hover,.industrial-construction-page .prose p a:hover{color:var(--navy-ink)}
.industrial-construction-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.land-survey-page .prose h3 a,.land-survey-page .prose p a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.land-survey-page .prose h3 a:hover,.land-survey-page .prose p a:hover{color:var(--navy-ink)}
.land-survey-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.tek-page .prose h3 a,.tek-page .prose p a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.tek-page .prose h3 a:hover,.tek-page .prose p a:hover{color:var(--navy-ink)}
.tek-page .prose h3 a::after{content:" ↗";font-size:.7em;color:var(--cyan);vertical-align:.12em}
.support-page .prose h3 a,.support-page .prose p a,.support-page .prose li a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.support-page .prose h3 a:hover,.support-page .prose p a:hover,.support-page .prose li a:hover{color:var(--navy-ink)}
.support-terms{max-width:620px;--bt-max-width:620px;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
.support-terms h3{margin:0 0 12px;color:var(--navy-ink);font-size:21px}
.support-terms p{margin:0 0 12px;color:var(--muted);font-size:15px;line-height:1.65}
.support-terms a{color:var(--navy);font-weight:700;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.support-terms a:hover{color:var(--navy-ink)}
.standards-page .prose a,.standards-page .service-consult a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.standards-page .prose a:hover,.standards-page .service-consult a:hover{color:var(--navy-ink)}
.standards-page .standards-hero{padding:26px 0 34px}
.standards-hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(390px,.96fr);gap:48px;align-items:center}
.standards-hero-copy{min-width:0}
.standards-hero-copy h1{max-width:720px;--bt-max-width:720px}
.standards-hero-media{min-width:0;aspect-ratio:4/3;margin:0;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-alt);box-shadow:var(--shadow)}
.standards-hero-media span:where(.bt-background-image){display:block;width:100%;height:100%;--bt-css-height:100%;object-fit:cover;object-position:center 42%;--bt-position:center 42%}
.standards-hero-points{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none}
.standards-hero-points li{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface-cool);color:var(--navy-ink);font-size:13px;font-weight:700}
.standards-page .standards-main{padding:28px 0 78px}
.standards-intro{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(360px,.92fr);margin:0 0 34px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#fff 0%,var(--surface-cool) 100%);box-shadow:var(--shadow-sm);overflow:hidden}
.standards-intro-copy{padding:24px 26px}
.standards-intro-copy h2{margin:0 0 12px}
.standards-intro-copy p:last-child{margin-bottom:0}
.standards-list{margin:0!important;padding:24px 26px 24px 46px!important;border-left:1px solid var(--line);background:rgba(255,255,255,.54)}
.standards-list li{margin:7px 0!important;color:var(--text)}
.import-page .prose a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.import-page .prose a:hover{color:var(--navy-ink)}
.estimates-page .prose a,.estimates-page .service-consult a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.estimates-page .prose a:hover,.estimates-page .service-consult a:hover{color:var(--navy-ink)}
.estimates-page .estimate-hero{padding:26px 0 34px}
.estimate-hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(390px,.96fr);gap:48px;align-items:center}
.estimate-hero-copy{min-width:0}
.estimate-hero-copy h1{max-width:720px;--bt-max-width:720px}
.estimate-hero-media{min-width:0;aspect-ratio:3/2;margin:0;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-alt);box-shadow:var(--shadow)}
.estimate-hero-media span:where(.bt-background-image){display:block;width:100%;height:100%;--bt-css-height:100%;object-fit:cover;object-position:center;--bt-position:center}
.estimate-hero-points{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none}
.estimate-hero-points li{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface-cool);color:var(--navy-ink);font-size:13px;font-weight:700}
.estimates-page .estimate-main{padding:28px 0 78px}
.estimate-intro{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:0;padding:0;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#fff 0%,var(--surface-cool) 100%);box-shadow:var(--shadow-sm);overflow:hidden}
.estimate-intro p{margin:0;padding:24px 26px;color:var(--text);line-height:1.7}
.estimate-intro p+p{border-left:1px solid var(--line)}
.estimate-products{clear:both;margin:34px 0 36px}
.estimate-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:20px}
.estimate-product-card{display:flex;flex-direction:column;min-width:0;padding:24px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.estimate-product-card h3{margin:14px 0 12px;font-size:22px;line-height:1.25}
.estimate-product-card p{margin:0;line-height:1.68}
.estimate-product-card .estimate-product-link{margin-top:auto;padding-top:18px;font-size:14px;font-weight:800}
.compact-service-hero{padding:26px 0 34px}
.compact-service-hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(390px,.96fr);gap:48px;align-items:center}
.compact-service-hero-copy{min-width:0}
.compact-service-hero-copy h1{max-width:720px;--bt-max-width:720px}
.compact-service-hero-media{min-width:0;aspect-ratio:3/2;margin:0;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-alt);box-shadow:var(--shadow)}
.compact-service-hero-media span:where(.bt-background-image){display:block;width:100%;height:100%;--bt-css-height:100%;object-fit:cover;object-position:center;--bt-position:center}
.compact-service-hero-points{display:flex;flex-wrap:wrap;gap:8px;margin:20px 0 0;padding:0;list-style:none}
.compact-service-hero-points li{padding:8px 11px;border:1px solid var(--line);border-radius:999px;background:var(--surface-cool);color:var(--navy-ink);font-size:13px;font-weight:700}
.compact-service-main{padding:28px 0 78px}
.compact-service-intro{display:grid;margin:0 0 34px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#fff 0%,var(--surface-cool) 100%);box-shadow:var(--shadow-sm);overflow:hidden}
.compact-service-intro--two,.compact-service-intro--feature{grid-template-columns:repeat(2,minmax(0,1fr))}
.compact-service-intro--support{grid-template-columns:minmax(260px,.65fr) minmax(0,1.35fr);align-items:stretch}
.compact-service-intro>p,.compact-service-intro>div,.compact-service-intro>h2{margin:0;padding:24px 26px}
.compact-service-intro>p+p,.compact-service-intro>div+p,.compact-service-intro>h2+p{border-left:1px solid var(--line)}
.compact-service-intro h2{margin:0 0 12px}
.compact-service-intro>h2{display:flex;align-items:center;margin:0}
.compact-service-intro div p{margin:0}
.laboratory-page .prose a,.laboratory-page .service-consult a{color:var(--navy);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.laboratory-page .prose a:hover,.laboratory-page .service-consult a:hover{color:var(--navy-ink)}
.laboratory-page .compact-service-hero-media{aspect-ratio:4/3}
.laboratory-page .compact-service-hero-media span:where(.bt-background-image){object-position:center 38%;--bt-position:center 38%}
.laboratory-block{clear:both;margin-top:42px}
.laboratory-block>.eyebrow{display:inline-block;margin-bottom:10px}
.laboratory-block>h2{margin-top:0}
.laboratory-service-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:20px}
.laboratory-service-card{min-width:0;padding:21px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.laboratory-service-card>.laboratory-service-icon{display:grid;place-items:center;width:42px;height:42px;--bt-css-height:42px;margin-bottom:15px;border-radius:12px;background:var(--surface-cool);color:var(--navy)}
.laboratory-service-icon svg{width:23px;height:23px;--bt-css-height:23px}
.laboratory-service-card h3{margin:0 0 9px;color:var(--navy-ink);font-size:18px;line-height:1.3}
.laboratory-service-card p{margin:0;font-size:14.5px;line-height:1.62}
.laboratory-products{padding:30px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface-cool);box-shadow:var(--shadow-sm)}
.laboratory-products>p{max-width:880px;--bt-max-width:880px;margin-bottom:0}
.laboratory-product-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:22px}
.laboratory-product-card{display:flex;flex-direction:column;min-width:0;padding:23px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.laboratory-product-brand{align-self:flex-start;padding:6px 9px;border-radius:999px;background:var(--surface-cool);color:var(--navy);font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase}
.laboratory-product-card h3{margin:14px 0 10px;color:var(--navy-ink);font-size:21px;line-height:1.28}
.laboratory-product-card p{margin:0;font-size:15px;line-height:1.65}
.laboratory-product-card .laboratory-product-link{margin-top:auto;padding-top:18px;font-size:14px;font-weight:800}
.laboratory-doc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:20px}
.laboratory-doc-item{min-width:0;padding:21px 23px;border-left:4px solid var(--cyan);border-radius:0 var(--radius-lg) var(--radius-lg) 0;background:var(--surface-cool)}
.laboratory-doc-item h3{margin:0 0 8px;color:var(--navy-ink);font-size:18px}
.laboratory-doc-item p{margin:0;font-size:14.5px;line-height:1.62}
.laboratory-note{margin:18px 0 0;padding:15px 18px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:14px!important;line-height:1.6}
.laboratory-process-list{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin:20px 0 0!important;padding:0!important;list-style:none!important}
.laboratory-process-list li{display:flex;flex-direction:column;min-width:0;margin:0!important;padding:19px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.laboratory-process-list li>span:not(:where(.bt-background-image)){display:block;margin-bottom:18px;color:var(--cyan);font-size:12px;font-weight:800;letter-spacing:.08em}
.laboratory-process-list h3{margin:0 0 9px;color:var(--navy-ink);font-size:17px;line-height:1.35}
.laboratory-process-list p{margin:0;font-size:14px;line-height:1.58}
.laboratory-result{margin-top:42px}
.laboratory-result ul{margin-bottom:16px}
.laboratory-result p:last-child{padding-top:16px;border-top:1px solid var(--line)}
.service-case{clear:both;margin-top:34px;padding:26px 28px;border:1px solid var(--line);border-radius:var(--radius-lg);background:var(--surface-cool);box-shadow:var(--shadow-sm)}
.service-case h2{margin:12px 0 10px}
.service-case p:last-child{margin-bottom:0}
.prod-pills{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.prod-pills a{padding:8px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;font-weight:700;color:var(--navy);background:#fff}
.prod-pills a:hover{border-color:var(--navy);background:var(--surface-cool)}
.lead-box{background:var(--surface-alt);border:1px solid var(--line);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm)}
.lead-box h2{font-size:24px;margin-bottom:8px}
.lead-box p{color:var(--muted);margin-bottom:18px}
.lead-form{display:grid;gap:12px}
.lead-form input:not([type="checkbox"]),.lead-form select,.lead-form textarea{width:100%;border:1.5px solid var(--line);border-radius:11px;padding:13px 14px;font:inherit;background:#fff;color:var(--text)}
.lead-form select{cursor:pointer}
.lead-form textarea{min-height:110px;resize:vertical}
.service-steps{list-style:none;margin:30px 0 0;padding:0;display:grid;gap:12px;max-width:620px;--bt-max-width:620px}
.service-step{display:grid;grid-template-columns:46px 1fr;gap:14px;align-items:center;padding:15px 17px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-sm)}
.service-step__num{display:grid;place-items:center;width:42px;height:42px;--bt-css-height:42px;border-radius:12px;background:var(--surface-cool);color:var(--navy);font-size:13px;font-weight:800;letter-spacing:.04em}
.service-step p{margin:0;color:var(--text);font-size:15px;line-height:1.55}
.service-consult{max-width:620px;--bt-max-width:620px;margin:18px 0 0;color:var(--muted);font-size:14.5px;line-height:1.6}
.service-consult strong{color:var(--navy)}
.lead-form label.check{display:block;position:relative;min-height:20px;padding-left:28px;font-size:13px;line-height:1.5;color:var(--muted);cursor:pointer}
.lead-form label.check input[type="checkbox"]{position:absolute;top:1px;left:0;width:18px;height:18px;--bt-css-height:18px;margin:0;padding:0;accent-color:var(--navy);cursor:pointer}
.lead-form label.check a{color:var(--navy);font-weight:600;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px}
.lead-form label.check a:hover{color:var(--navy-ink)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:start}
.contact-card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;background:#fff}
.contact-card h3{margin-bottom:10px}
.contact-card a{color:var(--navy);font-weight:700}
.map-ph{min-height:280px;border-radius:var(--radius-lg);background:linear-gradient(135deg,#dfe8f6,#c9d9ee);display:flex;align-items:center;justify-content:center;color:var(--navy);font-weight:800;overflow:hidden}
.map-ph iframe{width:100%;height:280px;--bt-css-height:280px;border:0;display:block}
.spec-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.spec-table th,.spec-table td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line-soft);font-size:14.5px}
.spec-table th{width:38%;color:var(--muted);font-weight:600;background:var(--surface-alt)}
.letter-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;align-items:start}
.gallery-card{min-width:0;border-radius:12px;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .2s var(--ease),box-shadow .2s var(--ease)}
.gallery-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.gallery-card span:where(.bt-background-image){display:block;width:100%;height:auto;--bt-css-height:var(--bt-natural-height);background:var(--surface-alt)}
.gallery-card span:not(:where(.bt-background-image)){padding:12px 14px;font-weight:700;font-size:13px;line-height:1.4;color:var(--navy-ink)}
.letter{aspect-ratio:var(--bt-ratio, auto);padding:0;background:#fff;align-items:stretch}
.letter span:where(.bt-background-image){aspect-ratio:3/4;object-fit:contain}
.logo-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.logo-cell{min-height:170px;padding:20px;border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;gap:14px;align-items:center;justify-content:center;text-align:center;font-weight:800;color:var(--navy);background:#fff}
.logo-cell span:where(.bt-background-image){max-width:82%;--bt-max-width:100000px;max-height:92px;--bt-max-height:92px;width:var(--bt-auto-width, auto);height:auto;--bt-css-height:var(--bt-natural-height);object-fit:contain}
.partners-intro{max-width:820px;--bt-max-width:820px;margin-bottom:30px}
.partners-intro .s-sub{margin-top:12px}
.partners-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
.partner-card{min-height:190px;text-decoration:none;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
a.partner-card:hover{transform:translateY(-3px);border-color:rgba(20,57,110,.26);box-shadow:var(--shadow-sm)}
a.partner-card:focus-visible{outline:3px solid rgba(20,57,110,.28);outline-offset:3px}
.partner-card span:where(.bt-background-image){max-width:84%;--bt-max-width:100000px;max-height:82px;--bt-max-height:82px}
.scan-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}
.scan{aspect-ratio:var(--bt-ratio, auto);padding:0;align-items:stretch;background:#fff}
.scan span:where(.bt-background-image){aspect-ratio:3/4;object-fit:contain}
.licenses-section{padding-top:18px}
.licenses-hero h1{max-width:940px;--bt-max-width:940px}
.licenses-title-main,.licenses-title-company{display:block}
.licenses-title-company{margin-top:7px;font-size:.78em;white-space:nowrap;color:var(--navy)}
.licenses-intro{max-width:980px;--bt-max-width:980px;padding:32px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#fff 0%,var(--surface-cool) 100%);box-shadow:var(--shadow-sm)}
.licenses-intro h2{font-size:30px;margin-top:0}
.licenses-intro p:last-child{margin-bottom:0}
.license-carousel-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin:52px 0 20px}
.license-carousel-head .s-title{margin-top:10px}
.license-carousel-controls{display:flex;gap:8px}
.license-carousel-controls button{width:44px;height:44px;--bt-css-height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;color:var(--navy);font:inherit;font-size:22px;font-weight:800;cursor:pointer;box-shadow:var(--shadow-sm);transition:background .18s var(--ease),color .18s var(--ease),opacity .18s var(--ease)}
.license-carousel-controls button:hover{background:var(--navy);color:#fff}
.license-carousel-controls button:focus-visible{outline:3px solid rgba(23,72,151,.22);outline-offset:2px}
.license-carousel-controls button:disabled{opacity:.35;cursor:not-allowed}
.license-carousel{display:flex;gap:16px;overflow-x:auto;padding:4px 4px 18px;scroll-snap-type:x mandatory;scroll-padding-inline:4px;scroll-behavior:smooth;overscroll-behavior-inline:contain;scrollbar-color:#bac8df transparent;scrollbar-width:thin}
.license-slide{flex:0 0 clamp(220px,24vw,278px);display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-radius:16px;background:#fff;color:inherit;overflow:hidden;box-shadow:var(--shadow-sm);scroll-snap-align:start;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.license-slide:hover{transform:translateY(-3px);border-color:#b7c9e9;box-shadow:var(--shadow)}
.license-slide:focus-visible{outline:3px solid rgba(23,72,151,.25);outline-offset:3px}
.license-slide__preview{display:flex;align-items:center;justify-content:center;aspect-ratio:4/5;padding:14px;background:linear-gradient(150deg,#f4f7fb,#e7edf7);overflow:hidden}
.license-slide__preview span:where(.bt-background-image){display:block;width:100%;height:100%;--bt-css-height:100%;object-fit:contain;border-radius:6px;box-shadow:0 8px 22px rgba(15,32,67,.12)}
.license-slide__body{display:flex;flex-direction:column;gap:6px;min-height:96px;padding:15px 16px 17px}
.license-slide__body strong{font-size:15px;line-height:1.35;color:var(--navy-ink)}
.license-slide__body small{margin-top:auto;color:var(--muted);font-size:12px;line-height:1.4}
.license-carousel-hint{margin-top:10px;color:var(--muted);font-size:13px}
.charity-section{padding-top:18px}
.charity-intro{max-width:900px;--bt-max-width:900px;padding:32px;border:1px solid var(--line);border-radius:var(--radius-lg);background:linear-gradient(135deg,#fff 0%,var(--surface-cool) 100%);box-shadow:var(--shadow-sm)}
.charity-intro h2{font-size:30px;margin-top:0}
.charity-intro p:last-child{margin-bottom:0}
.charity-gallery-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin:52px 0 20px}
.charity-gallery-head .s-title{margin-top:10px}
.charity-gallery-head>p{max-width:430px;--bt-max-width:430px;color:var(--muted);font-size:14px;text-align:right}
.charity-gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;align-items:start}
.charity-card{appearance:none;min-width:0;padding:0;border:1px solid var(--line);border-radius:16px;background:#fff;color:inherit;text-align:left;overflow:hidden;box-shadow:var(--shadow-sm);cursor:zoom-in;transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease)}
.charity-card:hover{transform:translateY(-4px);border-color:#b7c9e9;box-shadow:var(--shadow)}
.charity-card:focus-visible{outline:3px solid rgba(23,72,151,.25);outline-offset:3px}
.charity-card__preview{display:flex;align-items:center;justify-content:center;aspect-ratio:3/4;padding:12px;background:linear-gradient(150deg,#f4f7fb,#e7edf7);overflow:hidden}
.charity-card__preview span:where(.bt-background-image){display:block;width:100%;height:100%;--bt-css-height:100%;object-fit:contain;border-radius:7px;box-shadow:0 8px 24px rgba(15,32,67,.13)}
.charity-card__body{display:flex;flex-direction:column;gap:5px;min-height:92px;padding:15px 16px 17px}
.charity-card__body strong{font-size:14px;line-height:1.4;color:var(--navy-ink)}
.charity-card__body span:not(:where(.bt-background-image)){margin-top:auto;font-size:12px;font-weight:800;color:var(--blue);text-transform:uppercase;letter-spacing:.04em}
body.charity-lightbox-open{overflow:hidden}
.charity-lightbox{position:fixed;inset:0;z-index:1200;padding:20px;background:rgba(9,18,38,.88);display:grid;place-items:center;backdrop-filter:blur(8px)}
.charity-lightbox[hidden]{display:none}
.charity-lightbox__panel{width:min(1180px,100%);height:min(900px,calc(100dvh - 40px));--bt-css-height:min(900px,calc(100dvh - 40px));display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:#f5f7fb;border-radius:18px;overflow:hidden;box-shadow:0 28px 80px rgba(0,0,0,.42)}
.charity-lightbox__topbar,.charity-lightbox__footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 18px;background:#fff}
.charity-lightbox__topbar{border-bottom:1px solid var(--line)}
.charity-lightbox__topbar>strong{color:var(--navy-ink)}
.charity-lightbox__tools{display:flex;align-items:center;gap:6px}
.charity-lightbox__tools button,.charity-lightbox__nav{display:inline-flex;align-items:center;justify-content:center;border:0;background:#eaf0fa;color:var(--navy);font:inherit;font-size:22px;font-weight:800;cursor:pointer;transition:background .16s var(--ease),color .16s var(--ease)}
.charity-lightbox__tools button{width:38px;height:38px;--bt-css-height:38px;border-radius:10px}
.charity-lightbox__tools button:hover,.charity-lightbox__nav:hover{background:var(--navy);color:#fff}
.charity-lightbox__tools button:disabled{opacity:.35;cursor:not-allowed}
.charity-lightbox__tools output{min-width:52px;text-align:center;font-size:13px;font-weight:800;color:var(--navy-ink)}
.charity-lightbox__tools .charity-lightbox__close{margin-left:6px;background:var(--navy);color:#fff;font-size:28px}
.charity-lightbox__stage{position:relative;display:grid;grid-template-columns:58px minmax(0,1fr) 58px;min-height:0;padding:14px;gap:12px}
.charity-lightbox__viewport{min-width:0;min-height:0;overflow:auto;display:flex;align-items:flex-start;justify-content:center;padding:12px;border-radius:12px;background:#dfe6f1;overscroll-behavior:contain}
.charity-lightbox__viewport span:where(.bt-background-image){display:block;width:var(--bt-auto-width, auto);height:auto;--bt-css-height:var(--bt-natural-height);max-width:none;--bt-max-width:100000px;max-height:none;--bt-max-height:100000px;cursor:zoom-in;box-shadow:0 12px 34px rgba(9,24,54,.2)}
.charity-lightbox__nav{align-self:center;width:48px;height:58px;--bt-css-height:58px;border-radius:14px;font-size:38px}
.charity-lightbox__footer{border-top:1px solid var(--line)}
.charity-lightbox__footer p{margin:0;color:var(--navy-ink);font-size:14px;font-weight:700}
.charity-lightbox__footer span:not(:where(.bt-background-image)){white-space:nowrap;color:var(--muted);font-size:13px;font-weight:800}
.syllabus{border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.syllabus details{border-bottom:1px solid var(--line-soft);background:#fff}
.syllabus summary{padding:14px 18px;font-weight:700;cursor:pointer}
.syllabus .pad{padding:0 18px 16px;color:var(--muted);font-size:14.5px}
.price-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.price-card{border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;background:#fff}
.price-card .num{font-size:28px;font-weight:800;color:var(--navy-ink);margin:8px 0}
.service-media{float:right;width:min(42%,420px);margin:0 0 24px 32px;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-alt);box-shadow:var(--shadow-sm)}
.service-media span:where(.bt-background-image){display:block;width:100%;height:auto;--bt-css-height:var(--bt-natural-height)}
.mentor-photo{margin-top:20px;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-alt);max-width:420px;--bt-max-width:420px}
.mentor-photo span:where(.bt-background-image){display:block;width:100%;height:auto;--bt-css-height:var(--bt-natural-height)}
.course-certificates{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.course-certificates span:where(.bt-background-image){width:100%;height:260px;--bt-css-height:260px;object-fit:contain;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
.course-corporate{padding-top:0}
.course-corporate-card{display:flex;align-items:center;justify-content:space-between;gap:32px;padding:30px 34px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--navy-ink),var(--navy));color:#fff;box-shadow:var(--shadow)}
.course-corporate-card>div{max-width:820px;--bt-max-width:820px}
.course-corporate-card .eyebrow{color:var(--navy-ink);background:#fff;font-weight:800;box-shadow:0 1px 0 rgba(255,255,255,.35),0 4px 14px rgba(0,0,0,.16)}
.course-corporate-card h2{margin:8px 0 10px;font-size:28px;line-height:1.2;color:#fff}
.course-corporate-card p{color:#dce7ff}
.course-corporate-card .btn{flex:0 0 auto;background:#fff;color:var(--navy-ink);border-color:#fff}
.course-price-note{margin:0 0 -2px;color:var(--muted);font-size:13px;line-height:1.45}
.price-card small{display:block;margin-top:4px;color:var(--muted);font-size:12px;font-weight:600}
.course-software-note{margin:18px 0 24px;padding:16px 18px;border-left:4px solid var(--cyan);border-radius:0 var(--radius) var(--radius) 0;background:var(--surface-cool)}
.course-software-note strong{color:var(--navy-ink)}
.course-partner-head{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;margin-bottom:24px}
.course-partner-head>div{max-width:820px;--bt-max-width:820px}
.course-partner-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.course-partner-grid article{padding:22px;border:1px solid var(--line);border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
.course-partner-grid h3{margin-bottom:8px;font-size:19px;color:var(--navy-ink)}
.course-partner-grid p,.course-partner-note{color:var(--muted)}
.course-partner-note{margin-top:18px;font-size:14px}
.format-choice{border:1px solid var(--line);border-radius:11px;padding:12px 14px;display:flex;flex-wrap:wrap;gap:10px 18px}
.format-choice legend{padding:0 6px;font-size:13px;font-weight:700;color:var(--muted)}
.format-choice label{display:flex;align-items:center;gap:7px;font-size:14px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin-bottom:8px}
.faq summary{font-weight:700;cursor:pointer}
.faq p{margin-top:8px;color:var(--muted)}
.split{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:start}
.news-list{display:grid;gap:16px}
.news-item{display:grid;grid-template-columns:160px 1fr;gap:16px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff}
.news-item .thumb{height:100px;--bt-css-height:100px;border-radius:10px;background:var(--surface-cool)}
.news-item time{font-size:13px;color:var(--muted)}
.pager{display:flex;gap:8px;margin-top:24px}
.pager a,.pager span:not(:where(.bt-background-image)){min-width:36px;height:36px;--bt-css-height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;border:1px solid var(--line);font-weight:700}
.pager .is-current{background:var(--navy);color:#fff;border-color:var(--navy)}
.article-body{max-width:760px;--bt-max-width:760px}
.article-body span:where(.bt-background-image){border-radius:12px;margin:16px 0}
@media (max-width:980px){
  .card-grid,.letter-grid,.logo-grid,.price-row,.contact-grid,.split,.scan-grid{grid-template-columns:1fr 1fr}
  .charity-gallery{grid-template-columns:repeat(2,minmax(0,1fr))}
  .page-hero h1{font-size:32px}
  .standards-hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);gap:30px}
  .standards-intro{grid-template-columns:minmax(0,1fr) minmax(320px,.9fr)}
  .estimate-hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);gap:30px}
  .compact-service-hero-grid{grid-template-columns:minmax(0,1fr) minmax(320px,.9fr);gap:30px}
  .laboratory-service-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .laboratory-process-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .news-item{grid-template-columns:1fr}
  .partners-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
.editorial-head{padding:28px 0 8px}
.editorial-head h1{font-size:36px;line-height:1.15;letter-spacing:-.03em;color:var(--navy-ink);max-width:820px;--bt-max-width:820px}
.bstrade-main .g-news{display:grid;grid-template-columns:160px 1fr;gap:16px;padding:16px;border:1px solid var(--line);border-radius:14px;background:#fff;margin-bottom:14px}
.bstrade-main .g-news--date{font-size:13px;color:var(--muted);margin-bottom:6px}
.bstrade-main .g-news--title{font-size:20px;font-weight:800;color:var(--navy-ink);margin-bottom:8px}
.bstrade-main .g-news--title a{color:inherit}
.bstrade-main .g-news--text{color:var(--muted);font-size:15px}
.bstrade-main .g-news--link a{font-weight:700;color:var(--navy)}
.bstrade-main .g-news span:where(.bt-background-image){width:100%;height:110px;--bt-css-height:110px;object-fit:cover;border-radius:10px}
.bstrade-main .articles-tags{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 20px}
.bstrade-main .articles-tags .tag{padding:8px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;font-weight:700;cursor:pointer;background:#fff}
.bstrade-main .articles-tags .tag.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.bstrade-main .news-detail-image span:where(.bt-background-image),.bstrade-main .article-body span:where(.bt-background-image){border-radius:12px;max-width:100%;--bt-max-width:100000px}
.bstrade-main .top-article-info{display:flex;justify-content:space-between;gap:16px;margin-bottom:16px}
@media (max-width:640px){
  .card-grid,.letter-grid,.logo-grid,.price-row,.scan-grid,.contact-grid,.split{grid-template-columns:1fr}
  .standards-page .standards-hero{padding:22px 0 28px}
  .standards-hero-grid{grid-template-columns:1fr;gap:26px}
  .standards-hero-points{margin-top:16px}
  .standards-page .standards-main{padding:24px 0 54px}
  .standards-intro{grid-template-columns:1fr;margin-bottom:30px}
  .standards-intro-copy{padding:20px}
  .standards-list{padding:20px 20px 20px 40px!important;border-left:0;border-top:1px solid var(--line)}
  .estimates-page .estimate-hero{padding:22px 0 28px}
  .estimate-hero-grid{grid-template-columns:1fr;gap:26px}
  .estimate-hero-media{aspect-ratio:4/3}
  .estimate-hero-points{margin-top:16px}
  .estimates-page .estimate-main{padding:24px 0 54px}
  .estimate-intro{grid-template-columns:1fr}
  .estimate-intro p{padding:20px}
  .estimate-intro p+p{border-left:0;border-top:1px solid var(--line)}
  .estimate-products{margin-top:30px}
  .estimate-product-grid{grid-template-columns:1fr}
  .compact-service-hero{padding:22px 0 28px}
  .compact-service-hero-grid{grid-template-columns:1fr;gap:26px}
  .compact-service-hero-points{margin-top:16px}
  .compact-service-main{padding:24px 0 54px}
  .compact-service-intro,.compact-service-intro--two,.compact-service-intro--feature,.compact-service-intro--support{grid-template-columns:1fr;margin-bottom:30px}
  .compact-service-intro>p,.compact-service-intro>div,.compact-service-intro>h2{padding:20px}
  .compact-service-intro>p+p,.compact-service-intro>div+p,.compact-service-intro>h2+p{border-left:0;border-top:1px solid var(--line)}
  .laboratory-block{margin-top:34px}
  .laboratory-service-grid,.laboratory-product-grid,.laboratory-doc-grid,.laboratory-process-list{grid-template-columns:1fr}
  .laboratory-products{padding:22px 20px}
  .laboratory-result{margin-top:34px}
  .charity-intro{padding:24px}
  .charity-intro h2{font-size:25px}
  .charity-gallery-head{display:block;margin-top:40px}
  .charity-gallery-head>p{margin-top:10px;text-align:left}
  .charity-gallery{grid-template-columns:1fr 1fr;gap:10px}
  .charity-card__preview{padding:7px}
  .charity-card__body{min-height:104px;padding:12px}
  .charity-card__body strong{font-size:12.5px}
  .charity-lightbox{padding:0}
  .charity-lightbox__panel{height:100dvh;--bt-css-height:100dvh;border-radius:0}
  .charity-lightbox__topbar{padding:9px 10px}
  .charity-lightbox__topbar>strong{font-size:13px}
  .charity-lightbox__tools button{width:36px;height:36px;--bt-css-height:36px}
  .charity-lightbox__tools output{min-width:46px;font-size:12px}
  .charity-lightbox__stage{grid-template-columns:1fr;padding:8px}
  .charity-lightbox__viewport{padding:8px}
  .charity-lightbox__nav{position:absolute;z-index:2;top:50%;width:44px;height:54px;--bt-css-height:54px;transform:translateY(-50%);background:rgba(255,255,255,.9);box-shadow:0 4px 18px rgba(9,24,54,.2)}
  .charity-lightbox__nav--prev{left:14px}
  .charity-lightbox__nav--next{right:14px}
  .charity-lightbox__footer{padding:9px 12px}
  .charity-lightbox__footer p{font-size:12px}
  .licenses-intro{padding:24px}
  .licenses-hero h1{font-size:29px}
  .licenses-title-company{font-size:.8em}
  .licenses-intro h2{font-size:25px}
  .license-carousel-head{margin-top:40px}
  .license-slide{flex-basis:min(76vw,270px)}
  .license-slide__body{min-height:92px}
  .bstrade-main .g-news{grid-template-columns:1fr}
  .service-media{float:none;width:100%;margin:0 0 24px}
  .course-certificates{grid-template-columns:1fr}
  .course-certificates span:where(.bt-background-image){height:auto;--bt-css-height:var(--bt-natural-height);max-height:420px;--bt-max-height:420px}
  .hero-media--civil{aspect-ratio:4/3}
  .hero-media--civil span:where(.bt-background-image){object-position:52% 58%;--bt-position:52% 58%}
  .hero-media--machinery{aspect-ratio:4/3}
  .hero-media--machinery span:where(.bt-background-image){object-position:50% 50%;--bt-position:50% 50%}
  .hero-media--shipbuilding{aspect-ratio:4/3}
  .hero-media--shipbuilding span:where(.bt-background-image){object-position:50% 55%;--bt-position:50% 55%}
  .hero-media--industrial{aspect-ratio:4/3}
  .hero-media--industrial span:where(.bt-background-image){object-position:48% 58%;--bt-position:48% 58%}
  .hero-media--survey{aspect-ratio:4/3}
  .hero-media--survey span:where(.bt-background-image){object-position:43% 50%;--bt-position:43% 50%}
  .hero-media--tek{aspect-ratio:4/3}
  .hero-media--tek span:where(.bt-background-image){object-position:58% 55%;--bt-position:58% 55%}
  .hero-media--course{aspect-ratio:4/3}
  .hero-media--course span:where(.bt-background-image){object-position:50% 50%;--bt-position:50% 50%}
  .course-corporate-card,.course-partner-head{align-items:flex-start;flex-direction:column}
  .course-corporate-card{padding:24px}
  .course-corporate-card .btn{width:100%}
  .course-partner-grid{grid-template-columns:1fr}
  .partners-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .partner-card{min-height:145px;padding:14px 10px;font-size:13px}
  .partner-card span:where(.bt-background-image){max-width:88%;--bt-max-width:100000px;max-height:64px;--bt-max-height:64px}
}