/* Britannia house style: dark only. No remote fonts or dependencies. */
:root{color-scheme:dark;--bg:#080f13;--panel:#101d23;--line:#2c4147;--ink:#edf4f1;--muted:#b6c8c9;--green:#bcf479;--cyan:#7ad7e6}*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--bg)}html{scroll-behavior:smooth}body{font-family:Arial,Helvetica,sans-serif;color:var(--ink);line-height:1.65}.bt-site{background:var(--bg);color:var(--ink);overflow-wrap:break-word}.bt-site a{color:inherit}.bt-site h1,.bt-site h2,.bt-site h3,.bt-site p{margin:0}.bt-site h1,.bt-site h2,.bt-site h3{text-wrap:balance}.bt-site h1{font-size:clamp(46px,5.9vw,82px);line-height:1.04;letter-spacing:-.065em;font-weight:500}.bt-site h2{font-size:clamp(30px,3.5vw,48px);line-height:1.12;letter-spacing:-.045em;font-weight:500}.bt-site h3{font-size:23px;line-height:1.23;letter-spacing:-.025em;font-weight:500}.bt-site em{color:var(--green);font-style:normal}.bt-site p{color:var(--muted)}a:focus-visible,summary:focus-visible,button:focus-visible{outline:3px solid var(--cyan);outline-offset:5px}.skip{position:absolute;left:20px;top:-100px;z-index:99;background:var(--green);color:var(--bg)!important;padding:12px 18px}.skip:focus{top:12px}.review-strip{font-size:10px;letter-spacing:1px;text-align:center;padding:8px 20px;background:#17282e;color:#c0d3d2}.review-strip span{padding:0 9px}.bt-header{display:flex;align-items:center;justify-content:space-between;padding:23px max(6%,calc((100% - 1320px)/2));gap:24px;border-bottom:1px solid var(--line);position:relative;z-index:3;background:var(--bg)}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;font-size:15px;font-weight:700;letter-spacing:1.7px;line-height:1.15;flex-shrink:0}.brand svg{width:38px;height:38px;color:var(--green);flex-shrink:0}.brand-sub{display:block;font-size:10px;letter-spacing:4px;margin-top:6px}.desktop-nav{display:flex;align-items:center;gap:26px;font-size:13px}.desktop-nav a{text-decoration:none;display:inline-flex;align-items:center;min-height:44px;position:relative}.desktop-nav a:after{position:absolute;bottom:4px;left:0;right:0;content:'';height:1px;background:var(--green);transform:scaleX(0);transform-origin:left;transition:transform .2s}.desktop-nav a:hover:after,.desktop-nav a[aria-current]:after{transform:scaleX(1)}.desktop-nav .nav-cta{color:var(--green);gap:16px}.mobile-menu{display:none}.eyebrow{font-size:11px;letter-spacing:1.7px;line-height:1.5;font-weight:600;color:var(--cyan)!important;margin-bottom:22px!important}.hero{display:grid;grid-template-columns:1.17fr 1fr;align-items:center;gap:32px;padding:68px 6% 50px;max-width:1500px;margin:auto}.hero h1{margin-bottom:27px}.hero .eyebrow{font-size:10px;letter-spacing:1.4px}.pill-dot{display:inline-block;width:6px;height:6px;background:var(--green);border-radius:50%;margin-right:8px;vertical-align:2px}.lead{font-size:18px;line-height:1.75;max-width:560px}.hero-actions{display:flex;gap:24px;align-items:center;margin-top:30px;flex-wrap:wrap}.bt-button{min-height:50px;display:inline-flex;justify-content:space-between;align-items:center;gap:28px;text-decoration:none;color:#102017!important;background:var(--green);border:1px solid var(--green);font-size:14px;font-weight:600;padding:13px 22px;border-radius:3px;transition:background .2s,transform .2s}.bt-button:hover{background:#d5ffa1;transform:translateY(-2px)}.bt-button span,.detail-link span,.quiet-link span{display:inline-block;transition:transform .2s}.bt-button:hover span,.detail-link:hover span{transform:translate(2px,-2px)}.quiet-link{font-size:13px;text-decoration:none;min-height:44px;display:inline-flex;align-items:center;gap:13px}.hero-foot{display:flex;gap:22px;color:var(--muted);font-size:11px;border-top:1px solid var(--line);margin-top:38px;padding-top:18px;flex-wrap:wrap}.hero-foot span:before{content:'+';color:var(--green);margin-right:8px}.system-art{margin:0;background:linear-gradient(140deg,#112830,#0b171d);border:1px solid var(--line);border-radius:4px;position:relative;min-width:0}.art-top{display:flex;justify-content:space-between;padding:20px 22px;font-size:9px;letter-spacing:1.4px;color:var(--muted)}.system-diagram{display:block;width:100%;height:auto}.signals{stroke-dasharray:9 91;stroke-dashoffset:0;animation:signal 3.6s ease-out 1}.core{animation:core-in 1.1s ease-out 1;transform-origin:center}.system-art figcaption{padding:0 22px 22px;font-size:12px;color:var(--ink)}.system-art small{display:block;color:var(--muted);font-size:10px;margin-top:5px}.live-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--green);margin-right:8px}@keyframes signal{from{stroke-dashoffset:100}to{stroke-dashoffset:0}}@keyframes core-in{from{opacity:.25;transform:scale(.94)}to{opacity:1;transform:scale(1)}}.intro{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 6% 45px;display:grid;grid-template-columns:1.1fr 1fr;gap:0 90px;background:#0c181d}.intro .eyebrow{grid-column:1/-1}.intro p:last-child{font-size:17px;max-width:530px;align-self:center}.section{padding:86px 6%;max-width:1500px;margin:auto}.section-head{display:flex;align-items:end;justify-content:space-between;gap:50px;margin-bottom:42px}.section-head>p{max-width:330px;font-size:15px}.service-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.service{padding:30px;border:1px solid var(--line);background:var(--panel);position:relative;transition:border-color .2s,background .2s,transform .2s}.service:hover{border-color:#729d95;background:#14282c;transform:translateY(-3px)}.card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:27px}.num{color:var(--cyan);font-size:12px;font-variant-numeric:tabular-nums}.capability-mark{font-size:30px;line-height:1;color:var(--green)}.service h3{font-size:26px;max-width:380px}.service p{font-size:15px;max-width:420px;margin-top:14px;min-height:50px}.detail-link{display:inline-flex;gap:20px;align-items:center;min-height:44px;font-size:13px;text-decoration:none;color:var(--green)!important;margin-top:22px}.service .detail-link{border-top:1px solid var(--line);display:flex;justify-content:space-between;padding-top:16px;margin-top:26px}.approach{background:#0e1b21;border-top:1px solid var(--line);border-bottom:1px solid var(--line);max-width:none}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.steps article{border-top:1px solid #5d7779;padding-top:22px}.step-no{font-size:40px;color:var(--green);line-height:1;display:block;margin-bottom:24px;font-weight:400;letter-spacing:-2px}.steps .eyebrow{font-size:10px;margin-bottom:12px!important}.steps h3{font-size:24px;margin-bottom:15px}.steps p:last-child{font-size:15px}.procurement-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.procurement-grid article{border-top:1px solid var(--line);padding-top:24px}.procurement-grid h3{margin-bottom:14px}.procurement-grid p{font-size:15px}.honesty-note{display:grid;grid-template-columns:200px 1fr;gap:30px;border:1px solid var(--line);border-left:3px solid var(--cyan);padding:22px 26px;margin-top:35px;background:#102027;font-size:14px}.honesty-note>span{color:var(--ink);font-weight:600}.sector-list article{display:grid;grid-template-columns:45px 1fr 180px;align-items:start;gap:20px;border-top:1px solid var(--line);padding:28px 0}.sector-list article:last-child{border-bottom:1px solid var(--line)}.sector-list p{font-size:15px;max-width:650px;margin-top:10px}.sector-tag{font-size:11px;color:var(--cyan);text-align:right;padding-top:6px}.section-note{font-size:12px;max-width:810px;margin-top:22px!important}.mini-cta{background:var(--green);color:#132116;margin:10px 6% 76px;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:40px;border-radius:4px}.mini-cta .eyebrow{color:#284d29!important;margin-bottom:14px!important}.mini-cta h2{font-size:40px}.mini-cta .bt-button{background:#102017;color:var(--green)!important;border-color:#102017;flex-shrink:0}.mini-cta .bt-button:hover{background:#263c28}.bt-footer{padding:40px 6% 20px;border-top:1px solid var(--line);background:var(--bg)}.footer-top{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-bottom:35px}.footer-top>p{font-size:14px}.footer-top>p a{text-decoration:none;color:var(--green)!important;display:inline-flex;align-items:center;min-height:44px}.footer-bottom{display:flex;gap:24px;align-items:center;justify-content:space-between;border-top:1px solid var(--line);padding-top:20px;font-size:11px;color:var(--muted)}.footer-bottom>div{display:flex;gap:18px;flex-wrap:wrap}.footer-bottom a{display:inline-flex;align-items:center;min-height:44px;text-decoration:none}.page-title{padding:68px 6% 64px;border-bottom:1px solid var(--line);background:radial-gradient(ellipse at 95% 10%,#193332 0,transparent 55%),#0d191e}.page-title h1{max-width:960px;font-size:clamp(42px,5.1vw,70px);margin-bottom:26px}.page-title .lead{max-width:690px}.detail-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:80px}.detail-layout h2{font-size:34px}.detail-layout .large-text,.about-copy .large-text{color:var(--ink);font-size:22px;line-height:1.55;margin:0 0 22px}.detail-layout p{font-size:16px}.detail-layout h3{margin:30px 0 17px}.detail-layout ul,.brief-list{padding-left:20px;color:var(--muted);font-size:16px}.detail-layout li,.brief-list li{padding:7px 0 7px 5px}.deliverable-list{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.deliverable-list article{padding:24px 0;border-top:1px solid var(--line)}.deliverable-list h3{font-size:23px;margin-top:24px}.boundaries{max-width:1000px;margin:0}.boundaries h2{font-size:33px;margin-bottom:20px}.boundaries>p:last-child{font-size:16px}.scenario{display:grid;grid-template-columns:1fr 1fr;gap:70px}.scenario>p{font-size:21px;color:var(--ink)}.scenario ol{padding:0;margin:0;list-style:none;color:var(--muted)}.scenario li{border-top:1px solid var(--line);padding:15px 0;font-size:15px}.scenario strong{color:var(--green);display:block}.agreement-list{max-width:900px}.agreement-list article{display:grid;grid-template-columns:50px 1fr;gap:24px;border-top:1px solid var(--line);padding:25px 0}.agreement-list h3{margin-bottom:8px}.agreement-list p{font-size:15px}.about-copy{max-width:840px;margin-left:auto}.about-copy>p{font-size:17px;margin-bottom:22px}.thinking-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}.thinking-grid article{border-top:1px solid var(--line);padding-top:24px}.thinking-grid h2{font-size:29px;margin-bottom:25px}.thinking-grid .large-text{color:var(--ink);font-size:18px;margin-bottom:20px}.thinking-grid p:last-of-type{font-size:15px}.contact-layout{display:grid;grid-template-columns:1.1fr 1fr;gap:60px}.contact-panel{border:1px solid var(--line);background:var(--panel);padding:30px;align-self:start}.email-link{font-size:clamp(17px,2vw,25px);display:block;min-height:44px;text-decoration:none;overflow-wrap:anywhere;color:var(--green)!important;line-height:1.4;margin-bottom:14px}.phone-link{display:block;font-size:20px;text-decoration:none;min-height:44px;margin-bottom:18px}.contact-panel>p:last-child{font-size:13px}.contact-layout h2{font-size:32px}.legal-page{max-width:980px;margin:0;font-size:16px}.legal-page h3{margin:28px 0 12px;font-size:21px}.legal-page p{margin-bottom:19px}.reveal{animation:entrance .55s ease-out both}@keyframes entrance{from{opacity:.75;transform:translateY(14px)}to{opacity:1;transform:none}}@media(min-width:1500px){.section,.page-title,.intro,.bt-footer,.mini-cta{padding-left:max(6%,calc((100% - 1320px)/2));padding-right:max(6%,calc((100% - 1320px)/2))}}@media(max-width:1050px){.desktop-nav{gap:18px;font-size:12px}.hero{gap:25px}.hero h1{font-size:clamp(45px,5.9vw,65px)}.section-head{gap:30px}.contact-layout{gap:30px}.hero-actions{gap:14px}}@media(max-width:800px){.desktop-nav{display:none}.mobile-menu{display:block}.mobile-menu summary{list-style:none;display:flex;align-items:center;gap:18px;min-width:75px;min-height:44px;cursor:pointer;font-size:13px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu summary span{font-size:21px;color:var(--green);transition:transform .2s}.mobile-menu[open] summary span{transform:rotate(45deg)}.mobile-menu nav{position:absolute;top:100%;left:0;right:0;background:#102027;border-bottom:1px solid var(--line);padding:14px 7% 24px;display:grid;grid-template-columns:1fr 1fr;gap:8px 24px;box-shadow:0 20px 30px #0005}.mobile-menu nav a{display:flex;align-items:center;min-height:48px;text-decoration:none;border-bottom:1px solid var(--line);font-size:15px}.mobile-menu nav a[aria-current],.mobile-menu .nav-cta{color:var(--green)}.hero{padding:45px 7%;grid-template-columns:1fr;gap:35px}.hero h1{font-size:clamp(46px,8.5vw,70px)}.hero .eyebrow{font-size:10px}.hero .lead{font-size:17px}.system-art{max-width:560px;width:100%}.system-diagram{max-height:440px}.hero-foot{margin-top:28px}.intro{padding:36px 7%;grid-template-columns:1fr;gap:24px}.intro .eyebrow{margin-bottom:0!important}.intro p:last-child{font-size:16px}.section{padding:56px 7%}.section-head{display:block;margin-bottom:30px}.section-head>p{max-width:560px;margin-top:22px}.steps,.procurement-grid,.deliverable-list,.thinking-grid{grid-template-columns:1fr;gap:30px}.steps article{display:block}.steps .step-no{font-size:32px;margin-bottom:20px}.honesty-note{grid-template-columns:1fr;gap:12px;padding:21px}.sector-list article{grid-template-columns:30px 1fr;gap:12px}.sector-tag{grid-column:2;text-align:left;padding-top:0}.mini-cta{margin:0 7% 46px;padding:28px;display:block}.mini-cta h2{font-size:32px}.mini-cta .bt-button{margin-top:28px}.bt-footer{padding:30px 7% 18px}.footer-top{display:block;padding-bottom:25px}.footer-top>p{margin-top:20px}.footer-bottom{display:block}.footer-bottom>div{margin:12px 0}.footer-bottom>span:last-child{display:block}.page-title{padding:42px 7%}.page-title h1{font-size:clamp(41px,7.5vw,59px)}.page-title .lead{font-size:17px}.detail-layout,.scenario,.contact-layout{grid-template-columns:1fr;gap:35px}.detail-layout h2{font-size:31px}.detail-layout .large-text{font-size:21px}.service-detail{padding-top:42px}.deliverable-list h3{margin-top:15px}.boundaries h2{font-size:30px}.agreement-list article{grid-template-columns:28px 1fr;gap:15px}.thinking-grid h2{font-size:30px}.contact-panel{padding:24px}.email-link{font-size:19px}}@media(max-width:480px){.brand{font-size:12px;gap:9px;letter-spacing:1.5px}.brand svg{width:31px;height:34px}.brand-sub{font-size:9px;letter-spacing:3.5px}.bt-header{padding:15px 7%;gap:15px}.review-strip{font-size:8px;letter-spacing:.6px;padding:8px 10px}.review-strip span{padding:0 4px}.hero h1{font-size:46px;letter-spacing:-.06em}.hero{padding-top:36px;gap:28px}.hero .eyebrow{font-size:9px;letter-spacing:1px}.hero-actions{display:block}.quiet-link{margin-top:15px}.hero-foot{gap:10px 18px;font-size:10px}.art-top{padding:16px;font-size:8px}.system-art figcaption{padding:0 16px 16px;font-size:11px}.system-art small{font-size:9px}.bt-site h2{font-size:31px}.service-grid{grid-template-columns:1fr;gap:14px}.service{padding:24px}.service h3{font-size:25px}.service p{min-height:0}.card-top{margin-bottom:22px}.section-head>p{font-size:15px}.eyebrow{font-size:10px;letter-spacing:1.5px}.mini-cta{padding:25px 22px}.mini-cta h2{font-size:29px}.mini-cta .bt-button{gap:18px;font-size:13px;width:100%}.sector-list h3{font-size:23px}.page-title h1{font-size:42px}.contact-panel{padding:22px}.email-link{font-size:17px}.phone-link{font-size:18px}.legal-page{font-size:15px}.bt-footer .brand{font-size:13px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.bt-button:hover,.service:hover{transform:none}}
@media(max-width:360px){.bt-site .page-title h1{font-size:36px}.bt-site .hero h1{font-size:40px}.bt-site .brand{font-size:11px}.bt-site .brand-sub{letter-spacing:2.6px}}