:root{--bg:#0d141c;--panel:#15212c;--line:#2c3b48;--ink:#edf3f5;--muted:#b1c2ce;--accent:#82ddca;--amber:#eecb83;--red:#ffb2a6;color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink)}a{color:var(--accent);text-underline-offset:3px}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}button{cursor:pointer;color:var(--ink);background:#1c2b38;border:1px solid var(--line);border-radius:8px;padding:10px 15px}button:hover,.button:hover{border-color:var(--accent);background:#263e49}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:3px}header,.shell,footer{max-width:1540px;margin:auto;padding:28px 34px}.brand{display:flex;justify-content:space-between;gap:20px;font-size:11px;letter-spacing:1.5px;color:var(--muted);margin-bottom:32px}.brand a{text-decoration:none;font-weight:750}.heading{display:flex;justify-content:space-between;align-items:start;gap:28px}.eyebrow{color:var(--accent);font-size:11px;letter-spacing:1.8px;text-transform:uppercase;font-weight:700}h1{font-size:clamp(29px,4vw,49px);letter-spacing:-1.5px;line-height:1.1;margin:12px 0}h2{font-size:26px;letter-spacing:-.6px;line-height:1.2;margin:0 0 15px}h3{font-size:18px;line-height:1.3;margin:0 0 10px}h4{font-size:13px;text-transform:uppercase;color:var(--accent);letter-spacing:.6px;margin:22px 0 8px}p{line-height:1.65}.sub{max-width:840px;color:var(--muted);margin:14px 0 22px;font-size:16px}.baseline{font-size:12px;color:var(--muted);border:1px solid var(--line);border-radius:9px;padding:12px;flex-shrink:0;text-decoration:none;line-height:1.7}.baseline strong{color:var(--accent);display:block}#searchForm{display:flex;position:relative;gap:10px;max-width:1030px}input[type=search]{min-width:0;flex:1;padding:14px 40px 14px 16px;background:#111e29;border:1px solid var(--line);border-radius:9px;color:var(--ink)}.shortcut{position:absolute;right:110px;top:13px;border:1px solid var(--line);padding:0 6px;border-radius:4px;color:var(--muted);pointer-events:none}nav{display:flex;gap:8px;flex-wrap:wrap;margin-top:23px}nav a,.button{display:inline-block;text-decoration:none;color:var(--ink);background:#1c2b38;border:1px solid var(--line);border-radius:8px;padding:10px 15px;font-size:14px}nav a.active{background:var(--accent);color:#0a2724;border-color:var(--accent)}.shell{padding-top:0}#breadcrumbs{font-size:12px;color:var(--muted);display:flex;gap:8px;flex-wrap:wrap;margin:0 0 20px;line-height:1.6}.grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.card{display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden;min-width:0}.card .body{padding:19px;display:flex;flex-direction:column;flex:1}.card h3 a{color:var(--ink);text-decoration:none}.card h3 a:hover{color:var(--accent)}.card p{font-size:13px;color:var(--muted);margin:0 0 15px}.card .open{margin-top:auto;text-align:center;font-size:13px}.kicker{font-size:10px;color:var(--muted);letter-spacing:1px;text-transform:uppercase;margin-bottom:9px}.preview{height:185px;background:#090f14;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--line);padding:10px}.preview img{width:100%;height:100%;object-fit:contain}.preview svg{width:100%;height:100%}.badge{font-size:10px;border:1px solid #37594e;background:#17352f;color:#a2ecd9;padding:4px 7px;border-radius:5px;display:inline-block}.badge.partial{background:#382f1c;border-color:#685437;color:var(--amber)}.badges{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 15px}.context{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:24px;margin-bottom:22px}.context p{color:var(--muted);font-size:14px}.context p:last-child{margin-bottom:0}.note{padding:14px 18px;border-left:3px solid var(--amber);background:#211f1b;color:#e5d8bd;border-radius:0 8px 8px 0;font-size:13px;line-height:1.6;margin:18px 0}.layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:24px}.sidebar{align-self:start;position:sticky;top:18px;background:var(--panel);padding:15px;border:1px solid var(--line);border-radius:12px}.sidebar h2{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin:4px 8px 13px}.sidebar a{display:flex;justify-content:space-between;gap:10px;color:var(--ink);padding:10px;font-size:13px;text-decoration:none;border-radius:7px;margin:3px 0}.sidebar a.active{color:var(--accent);background:#243e42}.sidebar a:hover{background:#24313e}.count{color:var(--muted);font-size:11px}.resultline{display:flex;justify-content:space-between;gap:15px;font-size:12px;color:var(--muted);margin:0 0 14px}.toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 20px}select{padding:10px;background:var(--panel);border:1px solid var(--line);color:var(--ink);border-radius:8px;max-width:100%}.small{font-size:12px!important;color:var(--muted);line-height:1.6}.stats{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0}.stat{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:13px 20px;color:var(--muted);font-size:12px}.stat strong{display:block;color:var(--ink);font-size:26px}.map-layout{display:grid;grid-template-columns:1.2fr 1fr;gap:25px;align-items:center;margin:0 0 25px}.map{background:#090f14;border:1px solid var(--line);border-radius:12px;padding:15px}.map svg{width:100%;height:auto;display:block}.map a rect,.map a circle{transition:fill .15s}.map a:hover rect,.map a:focus rect,.map a:hover circle,.map a:focus circle{fill:#2e615c}.map text{font-family:inherit;fill:var(--ink)}.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}.feature-list a{padding:12px;background:var(--panel);border:1px solid var(--line);border-radius:7px;text-decoration:none;font-size:13px}.section-heading{margin:32px 0 18px;display:flex;justify-content:space-between;align-items:baseline;gap:20px}.section-heading a{font-size:13px}.detail-grid{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(260px,.8fr);gap:25px}.prose{max-width:880px}.prose p{font-size:15px;color:var(--muted);margin-top:8px}.prose h3{margin-top:25px}.prose h3:first-child{margin-top:0}.detail-image{background:#090f14;border:1px solid var(--line);border-radius:10px;padding:15px;margin:0 0 18px}.detail-image img{max-width:100%;max-height:520px;display:block;object-fit:contain;margin:auto}.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0 20px}.chip{padding:7px 10px;font-size:12px;background:#24313e;border-radius:6px;border:1px solid #354554;text-decoration:none}.chip:hover{border-color:var(--accent)}.related a{display:block;padding:12px 0;border-bottom:1px solid var(--line);text-decoration:none;font-size:13px}.related a:last-child{border:0}.source-links{display:flex;gap:8px;flex-wrap:wrap}.source-links a{font-size:12px}.sources{border-top:1px solid var(--line);margin-top:28px;padding-top:18px}.row{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 0;border-bottom:1px solid var(--line)}.row a{text-decoration:none}.row small{display:block;color:var(--muted);margin-top:5px}.empty{padding:40px;background:var(--panel);border:1px dashed var(--line);border-radius:10px}.quiz{border:1px solid #37594e;border-radius:10px;padding:22px;margin:25px 0;background:#102723}.quiz button{display:block;text-align:left;margin:8px 0;width:100%}.quiz .answer{font-size:14px}.steps{counter-reset:step}.step{display:grid;grid-template-columns:40px 1fr auto;gap:15px;align-items:center;background:var(--panel);border:1px solid var(--line);border-radius:10px;margin:12px 0;padding:18px}.step:before{counter-increment:step;content:counter(step,decimal-leading-zero);color:var(--accent);font-size:22px}.step p{font-size:13px;color:var(--muted);margin-bottom:0}.step a{color:var(--ink);text-decoration:none}.step input{width:20px;height:20px;accent-color:var(--accent)}.progress{height:5px;border-radius:3px;background:var(--line);margin-bottom:20px}.progress>span{display:block;height:100%;background:var(--accent)}details{border:1px solid var(--line);border-radius:10px;padding:16px;margin:15px 0;background:var(--panel)}summary{cursor:pointer;font-size:14px}details p{font-size:13px;color:var(--muted)}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.6}th{color:var(--muted)}footer{display:flex;flex-wrap:wrap;gap:18px;border-top:1px solid var(--line);font-size:11px;color:var(--muted);margin-top:25px}.sr{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip{position:absolute;left:20px;top:-50px;z-index:10;background:var(--panel);padding:10px}.skip:focus{top:10px}.toast{position:fixed;bottom:20px;right:20px;border:1px solid var(--line);background:var(--panel);padding:12px 18px;border-radius:8px;display:none;font-size:13px}.menu-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.menu-grid .chip{margin:0}.route-actions{display:flex;gap:10px;margin:20px 0}.filter-count{margin-left:auto}.callout-title{font-size:16px;color:var(--ink)}
@media(max-width:1200px){.grid{grid-template-columns:repeat(2,minmax(0,1fr))}.heading{display:block}.baseline{display:inline-block;margin:0 0 20px}.baseline strong{display:inline;margin-right:8px}}
@media(max-width:850px){header,.shell,footer{padding-left:18px;padding-right:18px}.layout,.detail-grid,.map-layout{grid-template-columns:1fr}.sidebar{position:static;display:flex;flex-wrap:wrap;gap:3px}.sidebar h2{width:100%}.sidebar a{font-size:12px;padding:8px;margin:0}.detail-grid>aside{order:2}.map-layout{gap:15px}.brand span{display:none}.grid.two{grid-template-columns:1fr}.feature-list{grid-template-columns:1fr 1fr}nav a{font-size:12px;padding:9px}.brand{margin-bottom:24px}.sub{font-size:14px}}
@media(max-width:520px){.grid{grid-template-columns:1fr}.preview{height:220px}.heading h1{font-size:33px}.baseline{font-size:11px}.baseline strong{display:block}#searchForm button{padding:10px}#searchForm .shortcut{display:none}input[type=search]{font-size:13px;padding-right:12px}.context{padding:18px}.feature-list{grid-template-columns:1fr 1fr}.feature-list a{font-size:12px}.step{grid-template-columns:28px 1fr auto;padding:14px;gap:10px}.stat{padding:12px}.stats{gap:8px}.menu-grid{grid-template-columns:1fr}.row{align-items:start}.section-heading{display:block}.section-heading h2{margin-bottom:8px}.map{padding:6px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.orientation-image{display:block;width:100%;height:auto;max-height:620px;object-fit:contain}

.reference-map {width:100%;height:auto;display:block}.reference-map a:hover rect,.reference-map a:focus rect {fill:#75dbc244;stroke:#75dbc2;stroke-width:5}.region-references figure {margin:1rem 0}.region-references img {display:block;width:100%;height:auto;border-radius:6px}.region-references figcaption {font-size:.85rem;line-height:1.6;margin-top:.5rem;color:var(--muted)}

.layout>*,.detail-grid>*{min-width:0}.row>div{min-width:0;overflow-wrap:anywhere}.source-links,.related{overflow-wrap:anywhere}@media(max-width:850px){.layout,.detail-grid,.map-layout{grid-template-columns:minmax(0,1fr)}}@media(max-width:520px){.row{flex-wrap:wrap}.row .badge{max-width:100%}}

.aircraft-overview{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:30px;align-items:start}.aircraft-portrait{margin:0;border:1px solid var(--line);background:#090f14;border-radius:12px;overflow:hidden}.aircraft-portrait a{display:block}.whole-aircraft{display:block;width:100%;height:auto;object-fit:contain}.aircraft-portrait figcaption{padding:16px 20px;font-size:12px;line-height:1.6;color:var(--muted)}.aircraft-portrait figcaption a{display:inline}.media-type{color:var(--accent);font-weight:700}.photo-credit{display:block;margin-top:8px}.overview-introduction{min-width:0}.overview-introduction h2{margin-top:10px}.overview-introduction p{font-size:15px;color:var(--muted)}.aircraft-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0 0}.aircraft-facts>div{border-top:1px solid var(--line);padding-top:12px}.aircraft-facts dt{font-size:11px;color:var(--accent);text-transform:uppercase;letter-spacing:.7px}.aircraft-facts dd{font-size:13px;line-height:1.6;margin:5px 0 0}.overview-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.overview-links>a{display:block;text-decoration:none;border:1px solid var(--line);border-radius:10px;padding:20px;background:var(--panel)}.overview-links>a:hover{border-color:var(--accent)}.overview-links h3{font-size:17px;color:var(--ink)}.overview-links p{font-size:13px;color:var(--muted);margin:0}.overview-scope{margin-top:24px}@media(max-width:1050px){.aircraft-overview{grid-template-columns:minmax(0,1fr)}.aircraft-portrait{max-width:1000px;margin:0 auto}.overview-links{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:520px){.overview-links{grid-template-columns:minmax(0,1fr)}.aircraft-facts{grid-template-columns:minmax(0,1fr)}.aircraft-portrait figcaption{padding:12px}.overview-introduction p{font-size:14px}}

.workflow{margin:28px 0}.workflow dt{color:var(--accent);font-size:12px;margin-top:16px;font-weight:700}.workflow dd{margin:5px 0 0;color:var(--muted);line-height:1.65;font-size:14px}

.audit-filter{display:flex;gap:.75rem;align-items:center;flex-wrap:wrap;margin:1.5rem 0 .5rem}.audit-filter select{max-width:100%;padding:.65rem;background:var(--panel);color:inherit;border:1px solid var(--line);border-radius:.4rem}.depth-audit{margin:2rem 0}.depth-audit [hidden]{display:none!important}

.reference-table{max-width:100%;overflow-x:auto;margin:1rem 0}.reference-table table{width:100%;border-collapse:collapse;font-size:.92rem}.reference-table th,.reference-table td{text-align:left;padding:.6rem;border-bottom:1px solid var(--line,#31404d);vertical-align:top}.reference-table th{font-weight:700}

/* Shared aircraft catalogue shell. */
[hidden]{display:none!important}.catalogue-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;max-width:1060px}.catalogue .heading{max-width:850px}.catalogue .sub{max-width:680px}.catalogue-photo{margin:0;background:#090f14;border-bottom:1px solid var(--line)}.catalogue-photo>a{display:block;height:220px}.catalogue-photo img{display:block;width:100%;height:100%;object-fit:contain}.catalogue-photo figcaption{padding:10px 16px;color:var(--muted);font-size:11px;line-height:1.6}.aircraft-card h2{font-size:25px;margin:9px 0 14px}.aircraft-card h2 a{color:var(--ink);text-decoration:none}.aircraft-card h2 a:hover{color:var(--accent)}.aircraft-card .open{margin-top:auto}.catalogue-note{margin-top:22px}@media(max-width:650px){.catalogue-grid{grid-template-columns:minmax(0,1fr);gap:20px}.catalogue-photo>a{height:190px}.catalogue header{padding-bottom:12px}}

/* Production SVG is transparent and keeps its intrinsic aspect ratio. */
.brand{align-items:center}.brand-home{display:inline-flex;align-items:center;flex-shrink:0;border-radius:4px}.brand-home img{display:block;width:260px;max-width:100%;height:auto}.brand>span{line-height:1.6}@media(max-width:520px){.brand-home img{width:220px}.brand{margin-bottom:24px}}