:root{--blue:#2a7de1;--yellow:#fdcb2e;--action:#185fb5;--ink:#182b44;--muted:#46566b;--line:#c9d3df;--pale:#eef5ff;--paper:#fff;--radius:8px}*{box-sizing:border-box}html{scroll-padding-top:20px}body{margin:0;color:var(--ink);background:var(--paper);font-family:system-ui,-apple-system,"Segoe UI",sans-serif;font-size:16px;line-height:1.6}a{color:var(--action);text-underline-offset:4px}a:hover{text-decoration-thickness:2px}button,input,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;height:auto}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.12;letter-spacing:-.035em;text-wrap:balance}h1{font-size:clamp(2rem,5.2vw,4.7rem);font-weight:730;margin-bottom:24px;max-width:1050px}h1 span{color:var(--action)}h2{font-size:clamp(1.55rem,3.1vw,2.7rem);margin-bottom:18px}h3{font-size:1.22rem}p{margin-bottom:20px}li{margin-bottom:9px}ul,ol{padding-left:23px}.wrap{max-width:1200px;margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}.section{padding-block:clamp(40px,6vw,80px)}.hero{padding-block:clamp(38px,6vw,78px) 32px}.eyebrow{font-size:.875rem;font-weight:700;letter-spacing:.065em;line-height:1.5;margin-bottom:18px}.lead{font-size:clamp(1rem,1.8vw,1.2rem);max-width:750px;color:var(--muted);line-height:1.65}.small,.field-help{font-size:.875rem;line-height:1.6;color:var(--muted)}.site-header{border-bottom:1px solid var(--line)}.header-inner{max-width:1200px;margin:auto;display:flex;align-items:center;gap:24px;padding:20px clamp(16px,4vw,40px)}.brand{display:flex;align-items:center;gap:18px;text-decoration:none;color:var(--ink);flex:none;font-weight:720;letter-spacing:-.03em;font-size:1.15rem}.brand img{display:block;width:94px;height:50px;object-fit:contain}.header-inner nav{display:flex;gap:8px;flex-wrap:wrap;margin-left:auto}.navlink{padding:10px 12px;text-decoration:none;font-size:.9375rem;font-weight:600;min-height:44px}.navlink[aria-current=page]{background:var(--pale);text-decoration:underline;border-radius:6px}.parent-link{font-size:.875rem;padding-block:10px;white-space:nowrap}.status-label{display:inline-flex;align-items:center;gap:10px;max-width:100%;font-size:.875rem;font-weight:650;padding:10px 14px;background:var(--pale);border-left:4px solid var(--blue);margin-block:5px 20px}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--action);flex:none}.products{display:grid;grid-template-columns:1fr 1fr;gap:24px}.product-card{border:1px solid var(--line);border-radius:var(--radius);padding:clamp(22px,3vw,36px);display:flex;flex-direction:column;min-width:0}.product-card h2{font-size:clamp(1.6rem,3vw,2.2rem)}.product-card .eyebrow{color:var(--action)}.product-card p:not(.eyebrow){color:var(--muted)}.product-card ul{margin-bottom:26px}.card-link{display:flex;justify-content:space-between;align-items:center;gap:15px;padding-top:20px;min-height:48px;margin-top:auto;border-top:1px solid var(--line);font-weight:700;text-decoration:none}.card-link:hover{text-decoration:underline}.resource-intro{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}.resource-intro p{max-width:550px}.button{display:inline-flex;align-items:center;justify-content:center;gap:18px;min-height:48px;padding:12px 20px;border:1px solid var(--action);background:var(--action);border-radius:6px;color:#fff;font-size:1rem;font-weight:650;text-decoration:none;line-height:1.5;max-width:100%;text-align:center}.button:hover{background:#124c95;border-color:#124c95;color:#fff;text-decoration:none}.button.outline{background:white;color:var(--action)}.button.outline:hover{background:var(--pale)}.guide-stack{display:grid;gap:18px}.guide-stack a{display:grid;gap:10px;border-bottom:1px solid var(--line);padding:0 0 22px;text-decoration:none}.guide-stack strong{font-size:1.3rem;line-height:1.25;letter-spacing:-.02em;color:var(--ink)}.guide-stack .eyebrow{font-size:.8125rem;margin:0}.guide-stack a:hover strong{text-decoration:underline}.next-concepts{border-block:1px solid var(--line);padding-block:26px}.next-concepts h2{font-size:1.25rem}.next-concepts p{margin-bottom:7px}.parent-note{max-width:800px;margin-left:auto;margin-right:auto}.parent-note a{display:inline-block;padding-block:10px;min-height:44px}.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;padding-top:24px;font-size:.875rem}.breadcrumb a{padding-block:8px}.breadcrumb span{align-self:center}.product-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:52px;align-items:center;padding-block:40px 55px}.product-hero h1{font-size:clamp(2rem,4.3vw,3.85rem)}.product-hero .status-label{display:table}.product-hero .small{margin-top:16px}.example{background:var(--pale);border-radius:var(--radius);padding:clamp(22px,3vw,35px);border-top:5px solid var(--yellow)}.example h2{font-size:clamp(1.6rem,2.6vw,2.25rem)}dl{margin:20px 0}dl>div{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line);padding-block:12px;min-width:0}dt{font-size:.9375rem}dd{font-size:1rem;font-weight:700;margin:0;flex-shrink:0}.result{background:#fff4cc;border:0;border-radius:4px;padding-inline:10px;margin-top:8px}.example .small{margin-bottom:0}.section-heading{max-width:730px}.question-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-top:32px}.question-grid article{border-top:1px solid var(--line);padding-top:20px}.step{display:block;color:var(--action);font-size:.875rem;font-weight:700;margin-bottom:15px}.question-grid p{color:var(--muted)}.method{background:var(--pale);border-radius:var(--radius)}.method ol{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:30px}.method li{display:grid;gap:10px}.method span{color:var(--muted)}.guide-callout{display:flex;justify-content:space-between;align-items:center;gap:32px;padding-block:32px;border-block:1px solid var(--line)}.guide-callout>div{max-width:660px}.guide-callout h2{font-size:1.65rem}.guide-callout p{margin-bottom:0}.guide-callout .eyebrow{margin-bottom:12px}.guide-callout .button{flex-shrink:0}.availability{max-width:800px}.enquiry-layout{display:grid;grid-template-columns:1fr 1fr;gap:60px}.form-panel{border:1px solid var(--line);padding:28px;border-radius:var(--radius);min-width:0}label{display:block;font-size:1rem;font-weight:650;margin-top:20px;margin-bottom:8px}label:first-child{margin-top:0}label span{font-weight:400;color:var(--muted)}input,textarea{width:100%;padding:12px;border:1px solid #64758a;background:#fff;border-radius:5px;color:var(--ink);font-size:16px;line-height:1.5;min-height:48px}textarea{resize:vertical;overflow-wrap:anywhere}.field-help{margin-bottom:8px}.form-panel .button{width:100%}.form-panel form>.small{margin-top:20px}.error{color:#a51b24;font-size:.9375rem;margin-top:6px}[aria-invalid=true]{border:2px solid #a51b24}.draft{border-top:1px solid var(--line);margin-top:28px;padding-top:24px}.draft textarea{font-size:.875rem}.draft button{margin-top:12px}.prose{max-width:850px}details{border-bottom:1px solid var(--line);padding-block:18px}summary{font-size:1rem;font-weight:650;cursor:pointer;padding-block:4px;min-height:44px}details p{margin-top:14px}.related{padding-bottom:48px}.related a{display:inline-block;padding-block:10px;min-height:44px}.article{max-width:850px;padding-block:40px 70px}.article h1{font-size:clamp(2rem,4.8vw,3.9rem)}.article-header{margin-bottom:40px}.article h2{font-size:clamp(1.5rem,3vw,2rem);margin-top:36px}.article p,.article li{overflow-wrap:break-word}.article a{overflow-wrap:anywhere}.calculation{padding:18px;background:var(--pale);border-radius:var(--radius)}.calculation dt{font-size:1rem}.worksheet{list-style:none;padding:0}.worksheet li{border-bottom:1px solid var(--line);padding-block:12px}.guide-end{margin-top:45px;border-top:3px solid var(--yellow)}.site-footer{border-top:1px solid var(--line);padding-block:36px;padding-bottom:calc(36px + env(safe-area-inset-bottom))}.footer-inner{max-width:1200px;margin:auto;padding-inline:clamp(16px,4vw,40px);display:flex;justify-content:space-between;gap:40px}.footer-inner p{font-size:.875rem;color:var(--muted);margin:10px 0 0}.footer-inner nav{display:flex;gap:4px 20px;flex-wrap:wrap;max-width:540px;justify-content:flex-end;align-items:center}.footer-inner nav>a,.text-button{display:inline-flex;align-items:center;min-height:44px;font-size:.875rem;padding:8px 0}.text-button{color:var(--action);border:0;background:none;text-decoration:underline;text-underline-offset:4px}.skip{position:fixed;top:-100px;left:16px;background:#fff;padding:12px;z-index:20;border:2px solid var(--action)}.skip:focus{top:12px}:focus-visible{outline:3px solid var(--action);outline-offset:4px}.button:focus-visible{outline:3px solid var(--ink);outline-offset:4px}dialog{border:1px solid var(--line);border-radius:10px;padding:0;width:min(560px,calc(100% - 32px));max-height:calc(100dvh - 32px);color:var(--ink)}dialog::backdrop{background:#182b4470}.dialog-inner{padding:24px}dialog h2{font-size:1.6rem}#consent-actions{display:flex;gap:12px;flex-wrap:wrap}#consent-actions .button{flex:1}body{padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right)}[hidden]{display:none!important}@media(max-width:880px){.header-inner{flex-wrap:wrap;gap:12px}.header-inner nav{order:3;flex-basis:100%;margin:0;gap:4px}.parent-link{margin-left:auto}.navlink{padding-inline:12px}.product-hero{grid-template-columns:1fr;gap:30px}.product-hero h1{font-size:clamp(2rem,7vw,3.5rem)}.example{max-width:640px}.resource-intro,.enquiry-layout{grid-template-columns:1fr;gap:30px}.question-grid,.method ol{grid-template-columns:1fr;gap:20px}.guide-callout{align-items:start;flex-direction:column}.footer-inner{flex-direction:column;gap:20px}.footer-inner nav{justify-content:flex-start}}@media(max-width:680px){.products{grid-template-columns:1fr;gap:18px}.hero{padding-bottom:24px}.hero h1{font-size:clamp(2rem,7.7vw,2.75rem)}.product-card{padding:24px}.form-panel{padding:20px}.status-label{align-items:flex-start}.brand{gap:15px}.brand img{width:85px;height:45px}.brand{font-size:1.05rem}.parent-link{font-size:.8125rem}.header-inner{padding-block:14px}.navlink{font-size:.875rem;padding-inline:10px}.example dt{font-size:.875rem}.example dd{font-size:.9375rem}.calculation>div{flex-direction:column;gap:4px}.calculation dd{align-self:flex-end}.article .button{width:100%}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}@media print{.site-header,.site-footer,.skip,.preferences-open,.article-header .button,.guide-end,dialog{display:none!important}body{font-size:11pt}main,.article,.wrap{padding:0;max-width:none}.article h1{font-size:26pt}.article h2{font-size:18pt}.calculation{break-inside:avoid}a{color:inherit}.worksheet li{break-inside:avoid}}