:root{color-scheme:light;--bg:#fff;--side:#fafafa;--ink:#262626;--muted:#666666;--line:#e3e3e3;--soft:#f4f4f4;--primary:#333333;--primary-soft:#eeeeee;--header:#101010;--shadow:0 18px 70px #0000002a}*{box-sizing:border-box}html{scroll-padding-top:100px;scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 -apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button,input,select{font:inherit}button,select{cursor:pointer}button{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #777777;outline-offset:3px}svg{width:22px;height:22px;flex:none}button{border:0}h1,h2,h3,h4{line-height:1.25;letter-spacing:-.025em}h1{font-size:2.65rem;font-weight:720;margin:0 0 22px}h2{font-size:1.55rem;margin:42px 0 18px}h3{font-size:1.22rem;margin:30px 0 14px}h4{font-size:1.05rem;margin:24px 0 12px}p{margin:16px 0}kbd{font:12px/1.4 ui-monospace,monospace;border:1px solid var(--line);padding:3px 5px;border-radius:4px}code{background:var(--soft);border-radius:4px;padding:2px 5px;font-size:.9em;overflow-wrap:anywhere}pre{background:var(--soft);padding:20px;border:1px solid var(--line);border-radius:7px;overflow:auto;font-size:14px}pre code{padding:0;overflow-wrap:normal}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip{position:fixed;top:-100px;left:15px;background:var(--bg);z-index:200;padding:10px}.skip:focus{top:10px}.top{height:78px;position:sticky;top:0;z-index:40;background:var(--header);color:#fff;display:flex;align-items:center;padding:0 32px;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:#fff;line-height:1.2;white-space:nowrap;font-size:16px;font-weight:750;letter-spacing:.035em}.brand:hover{text-decoration:none}.brand b{font-weight:400}.brand small{display:block;font-size:10px;letter-spacing:.27em;color:#acb9ca;margin-top:5px}.brand-mark{display:flex;align-items:center;justify-content:center;background:#fff;color:#151e2b;width:38px;height:38px;font-weight:900;font-size:29px;letter-spacing:-.12em;padding-right:4px;border-radius:3px}.top-divider{height:27px;width:1px;background:#3b4553}.top-label{font-size:14px;color:#b7c4d4}.top-search{margin-left:auto;display:flex;align-items:center;gap:10px;background:#273241;border:1px solid #455161;border-radius:6px;color:#d2dbe6;padding:9px 11px;font-size:14px;min-width:280px}.top-search svg{width:18px}.top-search kbd{margin-left:auto;border-color:#526075;color:#bec9d6}.top-support{color:#dfe7f2;font-size:14px;white-space:nowrap}.icon-button{color:inherit;background:transparent;padding:5px;font-size:22px}.layout{display:grid;grid-template-columns:272px minmax(0,1fr) 215px;max-width:1680px;margin:auto;min-height:calc(100vh - 78px)}.sidebar{position:sticky;top:78px;height:calc(100vh - 78px);display:flex;flex-direction:column;background:var(--side);border-right:1px solid var(--line);overflow-y:auto;padding:30px 20px 20px}.sidebar nav{flex:1}.nav-home{display:block;padding:9px 10px;margin-bottom:26px;font-size:14px;font-weight:600;border-radius:5px}.selected{background:var(--primary-soft);color:var(--primary)!important}.nav-caption{font-size:12px;font-weight:650;letter-spacing:.07em;color:var(--muted);margin:23px 10px 10px;text-transform:uppercase}.product-link{display:flex;gap:8px;align-items:center;justify-content:space-between;padding:8px 10px;font-size:14px;color:var(--muted);line-height:1.4;border-radius:4px}.product-link:hover,.page-link:hover{background:var(--soft);text-decoration:none;color:var(--ink)}.nav-count{color:var(--muted);font-size:12px}.sidebar-footer{border-top:1px solid var(--line);padding:18px 10px 0;margin-top:34px;font-size:13px}.sidebar-footer a{color:var(--muted);display:block}.sidebar-footer span{display:block;color:var(--muted);font-size:12px;margin-top:12px}.back-link{display:block;color:var(--muted);font-size:14px;margin:0 10px 18px}#product-switch{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:10px 8px;border-radius:5px;font-size:14px}.page-link{display:block;line-height:1.5;padding:6px 10px;font-size:14px;color:var(--muted);border-radius:4px}.page-link.nested{margin-left:12px;padding-left:10px;border-left:1px solid var(--line);border-radius:0 4px 4px 0}.page-link.selected{font-weight:600}.home-main{grid-column:2/4;padding:45px 60px 65px;max-width:1230px;width:100%;margin:auto}.breadcrumbs{display:flex;gap:12px;color:var(--muted);font-size:12px;letter-spacing:.05em;margin-bottom:24px;font-weight:550}.home-main .breadcrumbs{font-size:11px;letter-spacing:.12em;color:var(--primary);margin-bottom:17px}.home-main h1{font-size:2.75rem;letter-spacing:-.035em;margin-bottom:13px}.title-period{color:var(--primary)}.home-intro{color:var(--muted);margin:0 0 27px}.hero-search{display:flex;align-items:center;gap:14px;background:var(--bg);border:1px solid #bfbfbf;border-radius:7px;box-shadow:0 2px 5px #00000008;width:100%;text-align:left;padding:19px 20px;color:var(--muted)}.hero-search:hover{border-color:var(--primary);color:var(--primary)}.hero-search svg{color:var(--primary)}.hero-search kbd{margin-left:auto;white-space:nowrap;color:var(--muted)}.home-meta{display:flex;gap:22px;color:var(--muted);font-size:12px;margin-top:10px}.product-section{margin-top:40px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.section-heading h2{font-size:1.18rem;margin:0;font-weight:650}.section-heading>span{font-size:12px;color:var(--muted)}.product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.product-card{border:1px solid var(--line);border-radius:7px;display:flex;flex-direction:column;min-height:159px;padding:18px 20px;color:var(--ink);transition:border-color .16s,box-shadow .16s,transform .16s;background:var(--bg)}.product-card:hover{border-color:#a0a0a0;box-shadow:0 4px 16px #00000009;transform:translateY(-2px);text-decoration:none}.card-top{display:flex;justify-content:space-between;align-items:center}.manual-label{font-size:10px;letter-spacing:.12em;color:var(--muted);font-weight:600}.card-arrow{color:var(--primary);font-size:18px}.product-card h3{font-size:1.18rem;font-weight:620;margin:13px 0 21px;line-height:1.35}.card-bottom{display:flex;justify-content:space-between;gap:8px;font-size:12px;color:var(--muted);margin-top:auto}.card-bottom span:last-child{color:var(--primary)}.support-section{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:42px;padding-top:24px;gap:20px}.support-section h2{font-size:1.12rem;margin:0}.support-section>div{display:flex;gap:28px;font-size:14px}.on-page{position:sticky;top:78px;align-self:start;max-height:calc(100vh - 78px);overflow:auto;padding:46px 24px 24px 12px;font-size:13px}.home-main+.on-page{display:none}.toc-label{font-size:11px;letter-spacing:.08em;font-weight:600;color:var(--muted);margin-bottom:14px}.on-page a{display:block;border-left:1px solid var(--line);padding:5px 0 5px 14px;color:var(--muted);line-height:1.5}.on-page a:hover{color:var(--primary);text-decoration:none;border-color:var(--primary)}.on-page .level-3{padding-left:23px}.article-main{padding:42px 45px 75px;min-width:0;max-width:980px;width:100%;margin:0 auto}.article-title{display:flex;align-items:flex-start;gap:16px;justify-content:space-between}.article-title h1{overflow-wrap:anywhere}.print-button{background:transparent;border:1px solid var(--line);border-radius:4px;color:var(--muted);font-size:12px;padding:4px 9px;margin-top:7px}.article-main li{margin:6px 0}.article-main ul,.article-main ol{padding-left:25px}.article-main figure{margin:26px 0}.article-main img{max-width:100%;height:auto;display:block;margin:auto;border-radius:4px;cursor:zoom-in}.article-main figcaption{font-size:13px;color:var(--muted);text-align:center}.hint{border:1px solid #bcd4f1;border-left:3px solid #467bbc;border-radius:5px;background:#eef5fd;padding:7px 20px;margin:24px 0;color:#213e64}.hint.warning{background:#fff9e9;border-color:#eed99b;border-left-color:#c6952f;color:#5d4821}.hint.danger{background:#fff0f0;border-color:#f2bcbc;color:#8c2b2b}.hint.success{background:#edf8f0;border-color:#b9ddc3;color:#25603b}.hint p,.hint ul{margin:10px 0}.hint strong{font-weight:650}.article-main details{border:1px solid var(--line);border-radius:5px;padding:0 18px;margin:12px 0}.article-main summary{cursor:pointer;font-weight:600;padding:15px 0}.article-main details[open]{padding-bottom:12px}.article-main blockquote{margin:20px 0;border-left:3px solid #d0d0d0;padding:2px 20px;color:var(--muted)}.table-wrap{overflow-x:auto;width:100%;margin:22px 0;border:1px solid var(--line);border-radius:5px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);min-width:100px}th{background:var(--soft);font-weight:600}tr:last-child td{border-bottom:0}td p{margin:3px 0}.video{position:relative;aspect-ratio:16/9;margin:24px 0}.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;border-radius:5px}.resource-link,.download{padding:15px 20px;border:1px solid var(--line);border-radius:5px;background:var(--side);overflow-wrap:anywhere}.tab-section{border-top:1px solid var(--line);margin-top:24px}.step{border-left:2px solid var(--line);padding-left:22px}.page-pagination{display:flex;gap:20px;margin-top:48px;border-top:1px solid var(--line);padding-top:28px}.page-pagination a{border:1px solid var(--line);padding:13px 18px;border-radius:5px;flex:1;font-size:14px}.page-pagination a:last-child{text-align:right}.page-pagination small{display:block;color:var(--muted);margin-bottom:4px}.mobile-only{display:none}dialog{width:min(780px,calc(100vw - 32px));max-height:85vh;padding:0;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);background:var(--bg);color:var(--ink);margin:9vh auto}dialog::backdrop{background:#00000060;backdrop-filter:blur(3px)}.search-head{display:flex;align-items:center;gap:14px;padding:18px 22px;border-bottom:1px solid var(--line)}.search-head svg{color:var(--primary)}.search-head input{width:100%;min-width:0;border:0;outline:none;background:transparent;color:var(--ink);font-size:18px}.search-head button{background:var(--soft);color:var(--muted);border:1px solid var(--line);border-radius:4px;padding:3px 6px;font-size:12px}.search-controls{display:flex;align-items:center;gap:12px;padding:15px 22px 6px;font-size:14px}.search-controls select{max-width:65%;background:var(--soft);color:var(--ink);border:1px solid var(--line);border-radius:4px;padding:5px 9px;font-size:14px}.check{display:flex;align-items:center;gap:5px;margin-left:auto;white-space:nowrap}.search-hint{font-size:12px;color:var(--muted);padding:0 22px;margin:4px 0 13px}.results{max-height:53vh;overflow:auto;padding:8px 12px 16px;min-height:150px}.search-empty{padding:25px;text-align:center;color:var(--muted);font-size:14px}.search-result{display:block;padding:14px 16px;border-radius:6px;color:var(--ink);border:1px solid transparent}.search-result:hover,.search-result.active{background:var(--primary-soft);border-color:#bdbdbd;text-decoration:none}.result-product{font-size:11px;color:var(--primary);letter-spacing:.055em;text-transform:uppercase}.result-title{font-weight:620;font-size:16px;margin:2px 0 5px}.result-excerpt{font-size:13px;line-height:1.6;color:var(--muted)}mark{background:#fff0a6;color:#453500;padding:0 2px;border-radius:2px}.search-footer{border-top:1px solid var(--line);display:flex;justify-content:space-between;padding:11px 22px;font-size:12px;color:var(--muted);gap:10px}.search-footer kbd{margin-right:3px}.more-results{display:block;margin:12px auto 0;background:var(--primary-soft);color:var(--primary);padding:8px 18px;border-radius:4px}.lightbox{width:min(1200px,95vw);margin:3vh auto;max-height:94vh}.lightbox img{max-width:100%;max-height:83vh;display:block;margin:auto;object-fit:contain}.lightbox button{display:block;margin:8px 12px 8px auto;padding:5px 10px;background:var(--soft);border-radius:4px}.lightbox p{padding:0 18px;font-size:13px}.lightbox a{font-size:14px}
:root[data-theme=dark]{color-scheme:dark;--bg:#181818;--side:#141414;--ink:#e6e6e6;--muted:#aaaaaa;--line:#3a3a3a;--soft:#272727;--primary:#dddddd;--primary-soft:#303030;--header:#090909;--shadow:0 18px 70px #0006}:root[data-theme=dark] .hint{background:#172a42;color:#c9ddf7;border-color:#3c5c83}:root[data-theme=dark] .hint.warning{background:#332b17;color:#ebd398;border-color:#725e30}:root[data-theme=dark] .hint.danger{background:#361e25;color:#f0b8c0;border-color:#77444c}:root[data-theme=dark] .hint.success{background:#163126;color:#b8dfc9;border-color:#315e47}
@media(min-width:1500px){.home-main{padding:50px 72px}.product-card{min-height:168px}}@media(max-width:1200px){.top-label,.top-divider{display:none}.top{gap:20px;padding:0 24px}.layout{grid-template-columns:250px minmax(0,1fr)}.home-main{grid-column:2;padding:35px}.on-page{display:none}.article-main{padding:36px}.product-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.support-section{align-items:flex-start}.support-section>div{flex-direction:column;gap:8px}}@media(max-width:800px){.top{height:66px;padding:0 16px;gap:12px}.brand{font-size:13px;gap:9px}.brand-mark{width:32px;height:32px;font-size:24px}.brand small{font-size:9px}.top-search{min-width:0;padding:8px;margin-left:auto}.top-search span,.top-search kbd,.top-support{display:none}.mobile-only{display:block}.layout{display:block;min-height:calc(100vh - 66px)}.sidebar{position:fixed;top:66px;bottom:0;left:0;width:285px;height:calc(100dvh - 66px);z-index:35;transform:translateX(-100%);transition:transform .18s}.sidebar.open{transform:translateX(0)}#nav-backdrop:not([hidden]){display:block;position:fixed;inset:66px 0 0;background:#0005;z-index:30}.home-main,.article-main{padding:30px 24px 50px}.home-main h1{font-size:2.2rem}h1{font-size:2.05rem}.home-intro{font-size:15px}.hero-search{padding:16px;font-size:14px}.home-meta{font-size:11px}.product-section{margin-top:30px}.product-card{padding:16px;min-height:145px}.card-bottom span:last-child{display:none}.product-card h3{font-size:1.1rem}.breadcrumbs{font-size:11px}.on-page{display:none}.article-main .breadcrumbs{flex-wrap:wrap}.search-controls{gap:8px;padding:14px 16px 6px;flex-wrap:wrap}.search-controls select{max-width:60%;flex:1}.check{font-size:12px}.search-head{padding:16px}.search-footer>span:last-child{display:none}.results{max-height:52vh}.search-hint{padding:0 16px}dialog{margin:4vh auto;max-height:92vh}.search-head input{font-size:16px}}@media(max-width:430px){.home-main,.article-main{padding-left:18px;padding-right:18px}.hero-search kbd{display:none}.product-grid{gap:10px}.product-card{padding:14px}.manual-label{font-size:9px}.section-heading h2{font-size:1.05rem}.support-section{flex-direction:column}.brand b{display:none}.home-meta{gap:16px}.page-pagination{flex-direction:column}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}@media print{.top,.sidebar,.on-page,.breadcrumbs,.print-button,.page-pagination,dialog{display:none!important}.layout{display:block}.article-main{max-width:none;padding:0}body{font-size:12pt;color:#000;background:white}.article-main details{display:block}.article-main img{max-height:80vh}a{color:#000}.hint,pre,table{break-inside:avoid}h1,h2,h3{break-after:avoid}}
/* Cockpit notation retained from the supplied U-2 guide. */
.sw{font-weight:700;letter-spacing:.02em;font-size:.94em;white-space:nowrap}.scr{font-family:Consolas,monospace;background:#000;color:#2fd04f;padding:1px 6px;border-radius:3px;font-size:.86em;white-space:nowrap}.scr.w{color:#f2f2f2}.scr.a{color:#fabe46}.scr.r{color:#ff4a4a}.scr.c{color:#59b5bc}.pill{display:inline-block;font-size:12px;font-weight:650;letter-spacing:.03em;padding:1px 8px;border-radius:10px;border:1px solid var(--line);color:var(--muted);vertical-align:2px;white-space:nowrap}.pill.s{border-color:#2d9654;color:#267a45}.pill.r{border-color:var(--primary);color:var(--primary)}.lamp{display:inline-block;padding:0 7px;border-radius:3px;font:700 12px/1.7 'Segoe UI',sans-serif;letter-spacing:.04em;white-space:nowrap}.lamp.red{background:#7a1417;color:#ffd9d6}.lamp.amb{background:#7a5600;color:#ffe9b0}.lamp.grn{background:#14532d;color:#c9f5d8}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin:18px 0}.card{border:1px solid var(--line);border-radius:6px;padding:14px 16px}.card h4{margin:0 0 4px}.card p{margin:4px 0;font-size:14px;color:var(--muted)}.article-main figure svg{max-width:100%;height:auto;width:auto;display:block;margin:auto}.missing-figure{border:1px dashed var(--line);border-radius:5px;background:var(--soft);color:var(--muted);padding:24px;font-size:14px;text-align:center}.gloss{display:grid;grid-template-columns:max-content 1fr;gap:6px 18px}.gloss dt{font-weight:650}.gloss dd{margin:0;color:var(--muted)}.tw{max-width:100%;overflow:auto}.article-footer{margin-top:30px;border-top:1px solid var(--line);padding-top:16px;font-size:12px;color:var(--muted)}@media(max-width:600px){.gloss{grid-template-columns:1fr}.gloss dd{margin-bottom:8px}}

/* Shared article typography and control notation. */
.article-main article{font-size:16px;line-height:1.8;overflow-wrap:break-word}
.article-main article>p{margin:20px 0}.article-main article>h2{padding-top:12px;border-top:1px solid var(--line);margin-top:44px}.article-main article>h3{margin-top:34px}
.article-tools{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 28px;padding-bottom:22px;border-bottom:1px solid var(--line);font-size:13px}
.pdf-download{display:inline-flex;align-items:center;gap:7px;border:1px solid #bdbdbd;border-radius:6px;padding:7px 12px;background:var(--primary-soft);font-weight:600;line-height:1.4}.pdf-download:hover{border-color:var(--primary);text-decoration:none}.manual-download{background:var(--bg);border-color:var(--line)}.download-count{font-size:11px;font-weight:400;color:var(--muted);border-left:1px solid var(--line);padding-left:8px}.article-tools .print-button{margin:0 0 0 auto;padding:7px 10px}
.notation-legend{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0 0 24px;font-size:12px;color:var(--muted)}.notation-legend>span:first-child{font-size:10px;letter-spacing:.1em;font-weight:700;margin-right:4px}
.cockpit-label{display:inline;padding:2px 6px;border:1px solid #b9cdeb;border-radius:4px;background:#edf4ff;color:#194c91;font-size:.93em;font-weight:650;box-decoration-break:clone;-webkit-box-decoration-break:clone;line-height:1.8}
.cockpit-label::before{content:'▣';margin-right:5px;font-weight:700}.control-switch{color:#166448;background:#edf8f2;border-color:#aed6c1}.control-switch::before{content:'↔'}.control-knob{color:#63448a;background:#f4effa;border-color:#d4c3e9}.control-knob::before{content:'◉'}.control-selector{color:#7a551a;background:#fff7e8;border-color:#e6cfa7}.control-selector::before{content:'◇'}
.article-main .procedure-list{padding-left:32px}.article-main .procedure-list>li{padding:9px 0 10px 8px;margin:0;border-bottom:1px solid var(--line)}.article-main .procedure-list>li:last-child{border-bottom:0}.procedure-list>li::marker{color:var(--primary);font-weight:700;font-variant-numeric:tabular-nums}.procedure-list li>p:first-child{margin-top:0}.procedure-list li>p:last-child{margin-bottom:0}.control-reference>li>strong:first-child{margin-right:5px}.article-main li li{border:0;padding:0;margin:5px 0}
.callout-label{font-size:11px;font-weight:750;letter-spacing:.07em;text-transform:uppercase;margin-top:8px}.hint .callout-label::before{content:'ℹ';margin-right:7px}.hint.warning .callout-label::before,.hint.danger .callout-label::before{content:'⚠'}.hint.success .callout-label::before{content:'✓'}
.editorial-warning{display:block;position:relative;padding:14px 18px 14px 45px;margin:16px 0;border:1px solid #e1ad47;border-left:4px solid #ba7b0c;border-radius:6px;background:#fff6db;color:#674611;font-style:normal;font-size:14px;line-height:1.55}.editorial-warning .warning-symbol{position:absolute;left:14px;top:14px;font-size:19px}.editorial-warning strong{display:block;font-size:14px}.editorial-warning>span:last-child{display:block;margin-top:4px}.draft-notice{display:flex;flex-direction:column;gap:4px;padding:14px 18px;background:#fff6db;border:1px solid #e1ad47;border-radius:6px;color:#674611;font-size:13px;margin:0 0 24px}.draft-notice strong{font-size:14px}
.article-main tbody tr:nth-child(even){background:var(--side)}.article-main th{font-size:12px;letter-spacing:.025em}.article-main figcaption{line-height:1.5;margin-top:10px}.article-main details[open]>summary{border-bottom:1px solid var(--line);margin-bottom:14px}
:root[data-theme=dark] .cockpit-label{background:#1d304b;color:#afceff;border-color:#456283}:root[data-theme=dark] .control-switch{background:#163126;color:#ade3ca;border-color:#396853}:root[data-theme=dark] .control-knob{background:#30223f;color:#ddc3f5;border-color:#655077}:root[data-theme=dark] .control-selector{background:#352b18;color:#f1d09a;border-color:#786139}:root[data-theme=dark] .editorial-warning,:root[data-theme=dark] .draft-notice{background:#332b17;color:#ffe1a0;border-color:#9c762f}
@media(max-width:600px){.article-tools{gap:8px}.article-tools .print-button{margin-left:0}.download-count{display:none}.article-main .procedure-list{padding-left:25px}.article-main .procedure-list>li{padding-left:4px}.notation-legend{gap:6px}.notation-legend>span:first-child{flex-basis:100%}.article-main article{font-size:15.5px}}
@media print{.article-tools,.notation-legend{display:none!important}.cockpit-label{color:#123859!important;background:#eef3f8!important}.editorial-warning,.draft-notice{color:#674611!important;background:#fff6db!important;break-inside:avoid}.article-main .procedure-list>li{break-inside:avoid}}

/* Shared Miltech masthead: neutral black, matching the main brand site. */
.top-search{background:#252525;border-color:#454545;color:#e1e1e1}.top-search kbd{border-color:#565656;color:#c6c6c6}.top-divider{background:#3a3a3a}.top-label,.brand small{color:#bdbdbd}.brand-mark{color:#101010}.top-support{color:#e6e6e6}

/* Supplied Miltech wordmark and neutral action buttons. */
.brand{flex-direction:column;align-items:flex-start;gap:4px;flex-shrink:0}.brand-logo{display:block;width:270px;height:auto}.brand small{margin:0;font-size:9px;letter-spacing:.24em}
.pdf-download,.manual-download,.print-button,.more-results{background:#101010;color:#fff;border:1px solid #101010}.pdf-download:hover,.manual-download:hover,.print-button:hover,.more-results:hover{background:#292929;border-color:#292929;color:#fff}.pdf-download .download-count{color:#ddd;border-color:#555}.hero-search{border-color:#bfbfbf}.hero-search:hover{border-color:#101010;color:var(--ink)}.hero-search svg{color:var(--ink)}
@media(max-width:800px){.brand-logo{width:210px}.brand small{font-size:8px;letter-spacing:.19em}.brand{gap:3px}}
@media(max-width:430px){.brand-logo{width:min(190px,48vw)}}

/* Locally hosted storefront heading font. */
@font-face{font-family:Jost;src:url('/assets/fonts/jost-bold.woff2') format('woff2');font-style:normal;font-weight:700;font-display:swap}@font-face{font-family:'Jost Card';src:url('/assets/fonts/jost-regular.woff2') format('woff2');font-style:normal;font-weight:400;font-display:swap}
h1,h2,.home-main h1,.product-card h3{font-family:Jost,Arial,sans-serif;font-weight:700;letter-spacing:0}

/* Keep inline manual links discoverable and semantic variant pills colored. */
.article-main article a{text-decoration:underline;text-underline-offset:3px}
.pill.r{border-color:#225fc5;color:#225fc5}
:root[data-theme=dark] .pill.r{border-color:#8db9ff;color:#8db9ff}
:root[data-theme=dark] :focus-visible{outline-color:#aaaaaa}
/* U-2 v3 diagrams: inline SVG maps and menu branch maps */
.article-main figure.map{--dg:#225fc5;--dg-soft:#e8f0fc;margin:24px 0;padding:16px;border:1px solid var(--line);border-radius:8px;background:var(--soft);text-align:left}:root[data-theme=dark] .article-main figure.map{--dg:#8db9ff;--dg-soft:#1d2a3f}.article-main figure.map svg{width:100%;height:auto;display:block}.article-main figure.map figcaption{text-align:center;color:var(--muted);font-size:14px;margin-top:10px}.map .t{font:600 13px -apple-system,"Segoe UI",Arial,sans-serif;fill:var(--ink)}.map .t.s{font-weight:400;font-size:12px;fill:var(--muted)}.map .t.h{font-size:11px;letter-spacing:.08em;fill:var(--muted)}.map .t.inv{fill:#fff}:root[data-theme=dark] .map .t.inv{fill:#10141a}.map .bx{fill:var(--bg);stroke:var(--muted);stroke-width:1.2}.map .bx.src{stroke:var(--dg);stroke-width:1.6}.map .bx.bus{fill:var(--dg-soft);stroke:var(--dg);stroke-width:1.6}.map .bar{fill:var(--dg)}.map .bar2{fill:var(--dg-soft);stroke:var(--dg);stroke-width:1}.map .ln path{fill:none;stroke:var(--muted);stroke-width:1.4}.map .ln path.dash{stroke-dasharray:5 4}.map .ahf{fill:var(--muted)}.map .axis line{stroke:var(--line);stroke-width:1}
.branch .root{background:var(--header);color:#fff;font-weight:700;font-size:14px;letter-spacing:.04em;text-align:center;padding:8px;border-radius:6px;margin-bottom:12px}.branch .root.sub{margin-top:16px;background:var(--muted)}.branch .cols{display:grid;gap:10px}.branch .c3{grid-template-columns:repeat(3,1fr)}.branch .c4{grid-template-columns:repeat(4,1fr)}.branch .c5{grid-template-columns:repeat(5,1fr)}.branch .c6{grid-template-columns:repeat(6,1fr)}.branch .col{position:relative;padding-top:10px}.branch .col::before{content:"";position:absolute;left:50%;top:-12px;height:22px;border-left:2px solid var(--dg)}.branch .hd{background:var(--dg-soft);border:1.5px solid var(--dg);border-radius:6px;padding:6px 8px;font-weight:700;font-size:13px;text-align:center;margin-bottom:6px}.branch .lf{background:var(--bg);border:1px solid var(--line);border-radius:5px;padding:5px 8px;font-size:12.5px;line-height:1.35;margin:5px 0 0 10px;position:relative}.branch .lf::before{content:"";position:absolute;left:-10px;top:50%;width:10px;border-top:1px solid var(--muted)}.branch .lf.inop{color:var(--muted);border-style:dashed}.branch kbd{font-size:10.5px;padding:0 5px;min-width:0}
@media(max-width:860px){.branch .c4,.branch .c5,.branch .c6{grid-template-columns:repeat(2,1fr)}.branch .c3{grid-template-columns:1fr}.branch .col::before{display:none}}
.article-main figure.shot{margin:22px 0;text-align:center}.article-main figure.shot img{width:620px;max-width:100%;background:#fff;border:1px solid var(--line);border-radius:8px}.article-main figure.shot.mfdscr img{width:480px;border:1px solid #333;border-radius:4px}.article-main figure.shot.sq img{width:340px;border:1px solid #333;border-radius:4px}.article-main figure.shot.wide img{width:600px;border:1px solid #333;border-radius:4px}.article-main figure.shot.panel img{width:100%}.article-main figure.shot.art img{background:#1b1f26;border:0;border-radius:8px;padding:6px}.article-main figure.shot figcaption{color:var(--muted);font-size:14px;margin-top:10px}.map .rt{stroke:#d8109f;stroke-width:3}.map .rtd{stroke:#d8109f;stroke-width:3;stroke-dasharray:8 6}.map .ds{stroke:#2f9fe0;stroke-width:2;stroke-dasharray:6 5}.map .ofly{stroke:#e6b800;stroke-width:2.5;stroke-dasharray:7 5}.map .dim{stroke:var(--muted);stroke-width:1;stroke-dasharray:4 4}.map .dim2{stroke:var(--line);stroke-width:1;stroke-dasharray:2 4}.map .dpm{fill:var(--bg);stroke:#d8109f;stroke-width:2.5}.map .tp{fill:#d8109f;stroke:none}.map .trc{fill:none;stroke:var(--muted);stroke-width:1;stroke-dasharray:4 4}.map .arc{fill:none;stroke:#d8109f;stroke-width:3}.map .acp{fill:none;stroke:var(--ink);stroke-width:2}.map .acf{fill:var(--ink)}.map .zone,.map .zone5{fill:none;stroke:#b76e00;stroke-width:1.2;stroke-dasharray:5 4}:root[data-theme=dark] .map .zone,:root[data-theme=dark] .map .zone5{stroke:#f0b455}
/* U-2S User Guide components (imported 2026-11-01): numbered steps, callouts on cockpit pictures, picture groups, static checklists */
.article-main{--u2-red:#e5322d;--u2-blue:#225fc5;--u2-ok-bg:#eaf6ef;--u2-warn:#b76e00}:root[data-theme=dark] .article-main{--u2-blue:#8db9ff;--u2-ok-bg:#14271c;--u2-warn:#f0b455}
.article-main .lede{margin:12px 0}
.article-main ol.steps{list-style:none;counter-reset:s;padding:0;margin:16px 0}.article-main ol.steps>li{counter-increment:s;position:relative;padding:8px 0 8px 44px;margin:0;display:flow-root}.article-main ol.steps>li::before{content:counter(s);position:absolute;left:0;top:9px;width:28px;height:28px;border-radius:50%;background:var(--u2-blue);color:#fff;font-weight:700;font-size:13.5px;display:flex;align-items:center;justify-content:center}.article-main ol.steps>li .why{display:block;color:var(--muted);font-size:14.5px}
.article-main ol.callouts{list-style:none;counter-reset:c;padding:0;margin:14px 0 20px}.article-main ol.callouts>li{counter-increment:c;position:relative;padding:3px 0 3px 40px;margin:4px 0}.article-main ol.callouts>li::before{content:counter(c);position:absolute;left:0;top:4px;width:24px;height:24px;border-radius:50%;background:#fff;color:#111;border:1.5px solid #111;font-weight:700;font-size:12.5px;display:flex;align-items:center;justify-content:center}.article-main .callouts.lab>li{display:inline-block;margin:3px 18px 3px 0;padding-left:32px}
.article-main td.n,.article-main th.n{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;min-width:0}
.article-main .colabel{margin:18px 0 4px}.article-main .pill.chk{border-color:var(--u2-warn);color:var(--u2-warn)}.article-main .lamp.n{background:var(--soft);border:1px solid var(--line);color:var(--ink)}
.article-main figure img{display:inline-block}
.article-main figure.shot.render img{width:640px;max-width:100%;height:auto;border:0;border-radius:10px;background:transparent}.article-main figure.shot.render.tall img{width:400px}.article-main figure.shot.render.wide img{width:100%}.article-main figure.shot.render.small img{width:300px}
.article-main figure.shot .rw{position:relative;display:inline-block;max-width:100%;line-height:0;vertical-align:top}.article-main figure.shot .rw img{display:block;margin:0}.article-main figure.shot.render.wide .rw{display:block}.article-main figure.shot.sq .rw img{width:300px}
.article-main figure.shot .co{position:absolute;transform:translate(-50%,-50%);width:24px;height:24px;border-radius:50%;background:#fff;color:#111;border:2px solid var(--u2-red);font:700 12px/20px -apple-system,"Segoe UI",Arial,sans-serif;text-align:center;box-shadow:0 1px 4px rgba(0,0,0,.55);pointer-events:none}
.article-main figure.shot .cot{position:absolute;width:6px;height:6px;border-radius:50%;background:var(--u2-red);border:1.5px solid #fff;transform:translate(-50%,-50%);pointer-events:none;box-sizing:content-box;box-shadow:0 0 2px rgba(0,0,0,.6)}
.article-main figure.shot .rw svg.lead{position:absolute;left:0;top:0;width:100%;height:100%;overflow:visible;pointer-events:none}.article-main figure.shot .rw svg.lead line{stroke:var(--u2-red);stroke-width:1.6}.article-main figure.shot .rw svg.lead line.h{stroke:#fff;stroke-width:4.2;opacity:.9}
.article-main figure.shot.efb img{width:100%;height:auto;border-radius:8px;border:1px solid var(--line);background:#fff}
.article-main figure.shot.ext img{width:100%;height:auto;border:0;border-radius:10px;background:radial-gradient(ellipse at 50% 38%,#f7f8fa 0%,#e3e7eb 62%,#cdd3da 100%)}.article-main figure.shot.ext.med img{width:640px;max-width:100%}
.article-main figure.dims{margin:22px 0;text-align:center}.article-main figure.dims svg{width:100%;height:auto;display:block;margin:0 auto 10px}.article-main figure.dims svg text{font:600 44px -apple-system,"Segoe UI",Arial,sans-serif;fill:#1c1f23}.article-main figure.dims svg .dl{stroke:#3a4048;stroke-width:3.5;fill:none}.article-main figure.dims svg .ex{stroke:#6b737d;stroke-width:2.5;stroke-dasharray:12 10;fill:none}.article-main figure.dims svg .bg{fill:#eef1f4}
.article-main .duo{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:12px;align-items:end;margin:18px 0}.article-main .duo figure,.article-main .trio figure,.article-main .scrpair figure,.article-main .seq figure{margin:0}
.article-main .trio{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:18px 0}.article-main .trio figcaption{font-size:13.5px;line-height:1.45}@media(max-width:860px){.article-main .trio{grid-template-columns:1fr}}
.article-main .pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;margin:16px 0 28px}.article-main .pcard{border:1px solid var(--line);border-radius:10px;background:var(--soft);padding:10px 12px 12px;display:flex;flex-direction:column;gap:6px}.article-main .pcard .pimg{display:flex;align-items:center;justify-content:center;height:170px}.article-main .pcard img{max-width:100%;max-height:170px;width:auto;height:auto;object-fit:contain;margin:0}.article-main .pcard b{font-size:14.5px;line-height:1.35;display:flex;gap:8px;align-items:baseline}.article-main .pcard .n{flex:none;font-style:normal;width:22px;height:22px;border-radius:50%;background:#fff;color:#111;border:2px solid var(--u2-red);font:700 11.5px/18px -apple-system,"Segoe UI",Arial,sans-serif;text-align:center}.article-main .pcard span{font-size:13.5px;color:var(--muted);line-height:1.45}
.article-main .seq{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px 18px;margin:18px 0 24px;counter-reset:q;max-width:760px}.article-main .seq figure{position:relative;counter-increment:q}.article-main .seq img{width:100%;height:auto;display:block;border-radius:4px;border:1px solid #333;background:#000}.article-main .seq figure::before{content:counter(q);position:absolute;left:-8px;top:-9px;width:24px;height:24px;border-radius:50%;background:var(--u2-blue);color:#fff;font:700 12.5px/24px -apple-system,"Segoe UI",Arial,sans-serif;text-align:center;z-index:1;box-shadow:0 1px 3px rgba(0,0,0,.4)}.article-main .seq .keys{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0 2px;min-height:22px}.article-main .seq figcaption{font-size:13.5px;line-height:1.45;margin-top:4px}.article-main .seq.wide{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));max-width:none}
.article-main .scrpair{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,300px));gap:14px 18px;margin:18px 0}.article-main .scrpair img{width:100%;height:auto;border-radius:4px;border:1px solid #333}.article-main .scrpair figcaption{font-size:13.5px;line-height:1.45}.article-main .scrpair.wide{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.article-main .scrpair.wide img{border-radius:6px}
.article-main .steps>li .qthumb{float:right;margin:0 0 8px 16px;width:150px;text-align:center;font-size:11.5px;line-height:1.3;color:var(--muted);text-decoration:none}.article-main .steps>li .qthumb img{width:150px;height:auto;max-height:150px;object-fit:contain;display:block;margin:0 auto 3px;border-radius:6px}.article-main .steps>li .qthumb img.scr{background:#000;border:1px solid #333;width:auto;max-width:150px}@media(max-width:640px){.article-main .steps>li .qthumb,.article-main .steps>li .qthumb img{width:96px}}
.article-main .tthumb{float:right;margin:0 0 4px 10px;line-height:0}.article-main .tthumb img{height:56px;width:auto;max-width:96px;object-fit:contain;border-radius:5px;border:1px solid var(--line);background:var(--soft);padding:2px}.article-main .tthumb img.scr{background:#000;border-color:#333;padding:0}
.article-main .cl{border:1px solid var(--line);border-radius:8px;margin:22px 0;overflow:hidden;background:var(--bg)}.article-main .cl .clh{padding:10px 14px;background:var(--soft);border-bottom:1px solid var(--line)}.article-main .cl .clh h3{margin:0;font-size:16px;letter-spacing:.04em}.article-main .cl .when{margin:0;padding:10px 14px 0;color:var(--muted);font-size:14px}.article-main .cl .items{list-style:none;margin:0;padding:6px 0 8px}.article-main .cl .items>*{margin:0}.article-main .cl .i .row{display:flex;align-items:baseline;gap:8px;padding:6px 14px}.article-main .cl .n{flex:none;width:20px;text-align:right;color:var(--muted);font-size:13px;font-variant-numeric:tabular-nums}.article-main .cl .it{font-weight:600;min-width:0}.article-main .cl .dl{flex:1 1 20px;min-width:20px;border-bottom:2px dotted var(--muted);opacity:.45;transform:translateY(-4px);font-size:0;color:transparent}.article-main .cl .st{font-weight:700;text-align:right;max-width:55%}.article-main .cl .hn{display:block;padding:0 14px 6px 42px;margin-top:-3px;color:var(--muted);font-size:13.5px;line-height:1.45}.article-main .cl a.go{white-space:nowrap;margin-left:4px}.article-main .cl h4.sub{margin:0;line-height:1.4;padding:14px 14px 4px 42px;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--muted);text-transform:uppercase}.article-main .cl .nt .hint{margin:6px 14px 8px 42px;font-size:14.5px}.article-main .cl.notes .nt .hint{margin-left:14px}.article-main .cl .tn{position:relative;padding:5px 14px 5px 34px;font-size:14.5px;line-height:1.5}.article-main .cl .tn::before{content:"";position:absolute;left:18px;top:13px;width:6px;height:6px;border-radius:50%;background:var(--muted)}@media(max-width:600px){.article-main .cl .i .row{padding:7px 10px;gap:6px}.article-main .cl .st{max-width:48%}}
.article-main .clidx{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:18px 0 28px}.article-main .clidx>div{border:1px solid var(--line);border-radius:8px;padding:12px 14px;background:var(--soft)}.article-main .clidx b{display:block;margin-bottom:6px}.article-main .clidx a{display:block;font-size:14px;line-height:1.7}
@media(min-width:861px){.branch .c7{grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}}@media(max-width:860px){.branch .c7{grid-template-columns:repeat(2,1fr)}}
.article-main{--ok:#1f8a4c;--warn:#b76e00;--dang:#d1302f;--info:#346ddb;--screen-green:#2fd04f}:root[data-theme=dark] .article-main{--ok:#6fcf97;--warn:#f0b455;--dang:#ff7b76;--info:#7ea6f2}.article-main figure svg{--primary:var(--u2-blue);--accent:var(--u2-blue)}

/* Header actions (2026-11-02): Report a bug, Request a feature, Support */
.top-actions{display:flex;align-items:center;gap:8px}
.top-action{display:inline-flex;align-items:center;gap:7px;height:36px;padding:0 12px;border:1px solid #ffffff2e;border-radius:6px;color:#e8e8e8;font-size:13.5px;font-weight:550;white-space:nowrap}
.top-action:hover{background:#ffffff14;border-color:#ffffff55;color:#fff;text-decoration:none}
.top-action.primary{background:#fff;color:#111;border-color:#fff}
.top-action.primary:hover{background:#e9e9e9;color:#111}
.top-action svg{flex:none}
.top-search{margin-left:auto}
.side-actions{display:none}
@media(max-width:1350px){.top-action:not(.primary) span{display:none}.top-action:not(.primary){padding:0 10px}}
@media(max-width:800px){.top-actions{display:none}.side-actions{display:flex;flex-direction:column;gap:10px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid var(--line)}.side-actions a{color:var(--ink)!important;font-weight:550}}

/* Page layout (2026-11-02): menu always on the left edge; article and "On this page" centred in the space that remains */
:root{--nav-w:300px}
.layout{max-width:none;margin:0;grid-template-columns:var(--nav-w) minmax(0,1fr) minmax(0,980px) 230px minmax(0,1fr)}
.layout>.sidebar{grid-column:1}.layout>.article-main{grid-column:3;max-width:none}.layout>.on-page{grid-column:4}.layout>.home-main{grid-column:2/6}
.nav-hidden .layout{grid-template-columns:0 minmax(0,1fr) minmax(0,980px) 230px minmax(0,1fr)}
.nav-hidden .sidebar{visibility:hidden;overflow:hidden;padding:0;border:0}
.menu-toggle{display:block;font-size:20px;width:36px;height:36px;margin-left:-6px;border-radius:6px}
.menu-toggle:hover{background:#ffffff14}
@media(max-width:1200px){.layout{grid-template-columns:var(--nav-w) minmax(0,1fr)}.nav-hidden .layout{grid-template-columns:0 minmax(0,1fr)}.layout>.article-main,.layout>.home-main{grid-column:2;max-width:980px}.layout>.home-main{max-width:1230px}}
@media(max-width:800px){.layout{display:block}.layout>.article-main,.layout>.home-main{max-width:none}.nav-hidden .sidebar{visibility:visible;overflow-y:auto;padding:30px 20px 20px;border-right:1px solid var(--line)}}

/* Manual navigation (2026-11-02, v3): pinned header, product menu, tree with one indent step per level */
.sidebar{padding-top:0;scrollbar-width:thin}
.sidebar nav>.nav-home{margin-top:30px}
.nav-head{position:sticky;top:0;z-index:2;background:var(--side);margin:0 -20px;padding:22px 20px 12px;border-bottom:1px solid transparent}
.sidebar.scrolled .nav-head{border-bottom-color:var(--line);box-shadow:0 6px 12px -10px #0003}
.product-menu{position:relative}
.product-menu summary{list-style:none;display:flex;align-items:center;gap:10px;border:1px solid var(--line);background:var(--bg);border-radius:7px;padding:9px 10px 9px 12px;cursor:pointer}
.product-menu summary::-webkit-details-marker{display:none}
.product-menu summary:hover{border-color:#b9b9b9}
.pm-text{display:flex;flex-direction:column;flex:1;min-width:0}
.pm-kicker{font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);font-weight:600}
.pm-name{font-size:15px;font-weight:650;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pm-chev{color:var(--muted);transition:transform .15s;flex:none}
.product-menu[open] .pm-chev{transform:rotate(180deg)}
.pm-list{position:absolute;left:0;right:0;top:calc(100% + 6px);z-index:5;background:var(--bg);border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);padding:8px;max-height:min(70vh,560px);overflow:auto}
.pm-all{display:block;padding:8px 10px;font-size:13.5px;color:var(--muted);border-bottom:1px solid var(--line);margin-bottom:4px}
.pm-cap{font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:650;margin:10px 10px 4px}
.pm-link{display:block;padding:7px 10px;border-radius:5px;font-size:14px;color:var(--ink)}
.pm-link:hover,.pm-all:hover{background:var(--soft);text-decoration:none}
.pm-link.current{background:var(--primary-soft);font-weight:650}
.nav-tools{display:flex;gap:6px;align-items:center;margin:10px 0 0}
.nav-filter-wrap{position:relative;flex:1;min-width:0}
.nav-filter-wrap svg{position:absolute;left:9px;top:50%;transform:translateY(-50%);color:var(--muted);pointer-events:none}
#nav-filter{width:100%;border:1px solid var(--line);background:var(--bg);color:var(--ink);padding:8px 8px 8px 29px;border-radius:6px;font:inherit;font-size:13.5px}
#nav-filter:focus{outline:2px solid var(--primary);outline-offset:-1px}
.nav-expand{border:1px solid var(--line);background:var(--bg);color:var(--muted);border-radius:6px;padding:8px 9px;font:inherit;font-size:12px;white-space:nowrap;cursor:pointer}
.nav-expand:hover{color:var(--ink);background:var(--soft)}
.nav-empty{margin:12px 2px 2px;color:var(--muted);font-size:13.5px}

/* Sections: a clear title with a rule between sections */
.nav-tree{--step:16px;--slot:22px;padding:4px 0 12px}
.nav-tree .nav-section{border-top:1px solid var(--line);padding:6px 0 8px}
.nav-tree .nav-section:first-child{border-top:0}
.nav-heading{margin:0;font:inherit}
.nav-tree .nav-caption{display:flex;align-items:center;gap:8px;width:100%;background:none;border:0;cursor:pointer;font:inherit;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--ink);margin:6px 0 4px;padding:7px 6px 7px 8px;text-transform:uppercase;text-align:left;border-radius:6px}
.nav-tree .nav-caption:hover{background:var(--soft)}
.nav-tree .nav-caption>span:first-child{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-tree .nav-caption .chev{color:var(--muted);transform:rotate(90deg)}
.nav-section.closed .nav-caption .chev{transform:rotate(0)}
.nav-section.closed{padding-bottom:4px}

/* Tree rows: arrow slot first, then the title; one indent step per level, a guide line under each open group */
.nav-tree .nav-list{list-style:none;margin:0;padding:0;position:relative}
.nav-tree .nav-item{margin:0}
.nav-tree .nav-row{position:relative;display:flex;align-items:flex-start;gap:2px;padding-left:calc(4px + var(--d,0) * var(--step));border-radius:6px}
.nav-tree .nav-row:hover{background:var(--soft)}
.nav-tree .chev{flex:none;transition:transform .15s}
.nav-toggle{flex:none;display:flex;align-items:center;justify-content:center;width:var(--slot);height:32px;padding:0;border:0;background:none;color:var(--muted);border-radius:4px;cursor:pointer}
.nav-toggle:hover{color:var(--ink)}
.nav-toggle[aria-expanded=true] .chev{transform:rotate(90deg)}
.nav-spacer{flex:none;width:var(--slot);height:32px;position:relative}
.nav-spacer::after{content:"";position:absolute;left:50%;top:50%;width:4px;height:4px;margin:-2px 0 0 -2px;border-radius:50%;background:var(--line)}
.nav-tree .page-link{flex:1;min-width:0;display:block;padding:6px 8px 6px 4px;font-size:14px;line-height:1.45;color:var(--muted);border-radius:0 6px 6px 0;background:none!important;box-shadow:none;margin:0;border:0}
.nav-tree .page-link:hover{color:var(--ink);text-decoration:none}
.nav-tree .nav-list.nested::before{content:"";position:absolute;top:0;bottom:6px;left:calc(4px + var(--d,0) * var(--step) + var(--slot) / 2);border-left:1px solid var(--line)}
.nav-tree .nav-list.nested>.nav-item>.nav-row .nav-spacer::after{display:none}
/* Weight and colour show the structure: groups darker than pages, the open path darker still */
.nav-item.has-children>.nav-row>.page-link{color:var(--ink);font-weight:550}
.nav-tree .nav-list.nested .page-link{font-size:13.5px}
.nav-tree .page-link.ancestor{color:var(--ink);font-weight:600}
.nav-tree .nav-row:has(.page-link.selected){background:var(--primary-soft)}
.nav-tree .nav-row:has(.page-link.selected)::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--primary)}
.nav-tree .page-link.selected{color:var(--ink)!important;font-weight:650}
.nav-tree .page-link:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;border-radius:6px}
.nav-tree .page-link mark{background:#ffe08a;color:inherit;border-radius:2px;padding:0 1px}
:root[data-theme=dark] .nav-tree .page-link mark{background:#6b5714}
.nav-tree.filtering .nav-spacer::after{display:none}
/* The current page's headings (only where "On this page" is not shown) */
.nav-headings{display:none;list-style:none;margin:2px 0 6px;padding:0 0 0 calc(4px + (var(--d,0) + 1) * var(--step) + var(--slot) / 2)}
.nav-headings li{border-left:1px dashed var(--line)}
.nav-headings a{display:block;font-size:13px;line-height:1.4;padding:4px 10px;color:var(--muted);border-radius:0 4px 4px 0}
.nav-headings a:hover{background:var(--soft);text-decoration:none;color:var(--ink)}
.nav-headings a.active,.on-page a.active{color:var(--ink);font-weight:600}
.on-page a.active{border-left-color:var(--primary)}
.breadcrumbs{flex-wrap:wrap;row-gap:4px}
.breadcrumbs a{color:inherit}
@media(max-width:1200px){.nav-headings{display:block}}
@media(prefers-reduced-motion:reduce){.nav-tree .chev,.pm-chev{transition:none}}
@media(max-width:800px){.nav-head{padding-top:16px}.nav-toggle,.nav-spacer{height:38px}.nav-tree .page-link{padding-top:9px;padding-bottom:9px}#nav-filter{font-size:16px}.menu-toggle{margin-left:-4px}}
@media print{.top-actions,.menu-toggle{display:none!important}}

/* Header controls share the search bar height (2026-11-02) */
@media(min-width:801px){.top-search,.top-action{height:44px;box-sizing:border-box}.top-search{padding-top:0;padding-bottom:0}.top-action{padding:0 14px}#theme-toggle{width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:6px;padding:0}#theme-toggle:hover{background:#ffffff14}}
@media(min-width:801px) and (max-width:1350px){.top-action:not(.primary){width:44px;padding:0;justify-content:center}}
/* Exterior renders sit on the page background (2026-11-02). Dark theme keeps a faint backdrop so the black aircraft stays visible. */
.article-main figure.shot.ext img{background:transparent;border-radius:0}
:root[data-theme=dark] .article-main figure.shot.ext img{background:radial-gradient(ellipse at 50% 45%,#3a3d42 0%,#26282c 55%,transparent 80%)}
/* Legend of control symbols (2026-11-02): bottom of the right-hand column; at the end of the article where that column is hidden */
@media(min-width:1201px){.on-page{display:flex;flex-direction:column;height:calc(100vh - 78px)}}
.toc-main{min-height:0}
.toc-legend{margin-top:auto;padding-top:18px}
.notation-legend.side{display:flex;flex-direction:column;align-items:flex-start;gap:7px;margin:0;padding:14px 0 0;border-top:1px solid var(--line);font-size:12px}
.notation-legend.side>span:first-child{font-size:11px;letter-spacing:.1em;font-weight:700;text-transform:uppercase;color:var(--muted);margin:0 0 2px}
.notation-legend{margin:36px 0 0;padding-top:16px;border-top:1px solid var(--line)}
.notation-legend>span:first-child{text-transform:uppercase}
@media(min-width:1201px){.article-main .notation-legend{display:none}}

/* U-2S User Guide components: U2 101 - The Basics (2026-11-02) */

.article-main .b101-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:16px 0 20px}
.article-main .b101-stat{border:1px solid var(--line);border-radius:10px;padding:14px 14px 12px;background:var(--soft,#f6f6f6);display:flex;flex-direction:column;gap:4px}
.article-main .b101-stat .v{font-size:1.9rem;font-weight:800;line-height:1.05;letter-spacing:-.02em}
.article-main .b101-stat .l{font-size:13.5px;color:var(--muted);line-height:1.35}
.article-main .b101-cards .card{position:relative;padding-top:16px}
.article-main .b101-ico{font-size:1.35em;line-height:1;margin-right:2px}
.article-main .b101-cards .article-main .b101-ico{display:block;font-size:1.6rem;margin-bottom:8px}
ol.article-main .b101-timeline{list-style:none;counter-reset:t;display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:10px;padding:0;margin:14px 0 22px}
ol.article-main .b101-timeline>li{counter-increment:t;position:relative;border:1px solid var(--line);border-radius:10px;padding:38px 12px 12px;margin:0;font-size:14px;line-height:1.45}
ol.article-main .b101-timeline>li::before{content:counter(t);position:absolute;left:12px;top:10px;width:22px;height:22px;border-radius:50%;background:var(--ink,#222);color:var(--bg,#fff);font-weight:700;font-size:12px;display:flex;align-items:center;justify-content:center}
ol.article-main .b101-timeline>li b{display:block;font-size:15px;margin-bottom:2px}
.article-main .b101-phase{border:1px solid var(--line);border-radius:12px;padding:4px 20px 14px;margin:22px 0}
.article-main .b101-phase>h3{margin-top:16px}
.article-main .b101-key{font-size:1.08em;font-weight:600;line-height:1.5;border-left:4px solid var(--ink,#222);padding:4px 0 4px 14px;margin:10px 0 14px}
.article-main .b101-concept,.article-main .b101-sub{border-top:1px dashed var(--line);padding-top:6px;margin-top:14px}
.article-main .b101-concept>h4,.article-main .b101-sub>h4{margin:10px 0 4px}
details.article-main .b101-more{border:0;padding:0;margin:4px 0 8px}
details.article-main .b101-more>summary{display:inline-block;cursor:pointer;font-size:13.5px;font-weight:600;padding:5px 12px;border:1px solid var(--line);border-radius:99px;list-style:none}
details.article-main .b101-more>summary::-webkit-details-marker{display:none}
details.article-main .b101-more>summary::before{content:"+ "}
details.article-main .b101-more[open]>summary::before{content:"\2212  "}
.article-main .b101-pairs{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;margin:14px 0}
.article-main .b101-pair{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14px;line-height:1.45}
.article-main .b101-pair .q{font-weight:650;margin-bottom:6px}
.article-main .b101-pair .a{color:var(--muted)}
.article-main .b101-mistakes{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:10px;margin:14px 0}
.article-main .b101-mistake{border:1px solid var(--line);border-radius:10px;padding:12px 14px;font-size:14px;line-height:1.45;display:flex;flex-direction:column;gap:6px}
.article-main .b101-mistake .m{font-weight:650}
.article-main .b101-mistake .w{color:var(--muted)}
.article-main .b101-mistake .i{border-top:1px solid var(--line);padding-top:6px}
@media print{details.article-main .b101-more>summary{display:none}}

.article-main .b101-quote{margin:18px 0 22px;padding:22px 26px;border:0;border-radius:12px;background:var(--ink,#1e1e1e);color:var(--bg,#fff)}
.article-main .b101-quote p{margin:0;font-size:1.35rem;line-height:1.45;font-weight:650;letter-spacing:-.01em}
.article-main .b101-quote p::before{content:"\201C";font-size:2.4rem;line-height:0;vertical-align:-.45em;margin-right:6px;opacity:.6}
.article-main .b101-video{margin:18px 0 26px}
.article-main .b101-video .video{position:relative;width:100%;aspect-ratio:16/9;border-radius:10px;overflow:hidden;background:#000}
.article-main .b101-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.article-main .b101-video figcaption{font-size:13.5px;color:var(--muted);margin-top:8px;text-align:center}

/* Figures (v2): crisp lines, steady numbers, a background-coloured outline on labels that sit on lines, scroll instead of shrink on phones */
.article-main figure.map svg{shape-rendering:geometricPrecision;text-rendering:geometricPrecision;font-variant-numeric:tabular-nums}
.article-main figure.map svg text.hl{paint-order:stroke fill;stroke:var(--soft);stroke-width:3.5px;stroke-linejoin:round;stroke-opacity:.92}
@media(max-width:700px){.article-main figure.map{overflow-x:auto;-webkit-overflow-scrolling:touch}.article-main figure.map svg{min-width:620px}}
@media print{.article-main figure.map svg{min-width:0}}
/* U-2 ICAW message dictionary (guide build 0.9.432): static table; the guide's filter bar needs its script and is not on the site */
.article-main .icaw-az{display:flex;flex-wrap:wrap;gap:4px 10px;font-weight:600;margin:6px 0 0}
.article-main table.icaw td,.article-main table.icaw-dead td{vertical-align:top}
.article-main table.icaw td:first-child{min-width:150px}
.article-main table.icaw td:first-child .scr,.article-main table.icaw-dead td:first-child .scr{display:inline-block;margin:0 4px 4px 0;white-space:normal}
.article-main table.icaw small.lv{display:block;color:var(--muted);font-size:11.5px;font-weight:600;letter-spacing:.03em}
.article-main table.icaw small.icaw-note{display:block;margin-top:6px;color:var(--muted);font-size:12.5px;line-height:1.45}
.article-main .icaw-see{color:var(--muted)}
.article-main table.icaw tr:target td{background:var(--primary-soft)}

/* U-2 Introduction design elements, from the roadmap page (2026-11-11): timeline, fact tiles, number tiles */
.article-main ol.u2tl{--u2a:var(--u2-blue,#225fc5);list-style:none;margin:24px 0 30px;padding:0;position:relative}
.article-main ol.u2tl::before{content:"";position:absolute;left:116px;top:12px;bottom:12px;width:1px;background:linear-gradient(var(--u2a),var(--line) 85%,transparent)}
.article-main ol.u2tl>li{display:grid;grid-template-columns:100px 1fr;gap:34px;padding:14px 0;margin:0;border:0;position:relative}
.article-main ol.u2tl>li::after{content:"";position:absolute;left:112px;top:25px;width:9px;height:9px;border-radius:50%;background:var(--bg);border:1.5px solid var(--u2a)}
.article-main ol.u2tl>li.now::after{background:var(--u2a);box-shadow:0 0 0 5px color-mix(in srgb,var(--u2a) 18%,transparent)}
.article-main ol.u2tl .yr{font-size:34px;line-height:1;font-weight:750;letter-spacing:.01em;text-align:right;padding-top:4px;color:transparent;-webkit-text-stroke:1px var(--u2a);font-variant-numeric:tabular-nums}
.article-main ol.u2tl>li.now .yr{color:var(--u2a);-webkit-text-stroke:0}
.article-main ol.u2tl small{display:block;font-size:11px;font-weight:650;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.article-main ol.u2tl b{display:block;font-size:18px;line-height:1.3;margin:2px 0 4px}
.article-main ol.u2tl p{margin:0;font-size:15px;line-height:1.55;color:var(--muted);max-width:600px}
.article-main ol.u2tl em{display:inline-block;margin-top:9px;font-style:normal;font-size:12px;font-weight:650;letter-spacing:.03em;color:var(--u2a);border:1px solid color-mix(in srgb,var(--u2a) 45%,transparent);border-radius:999px;padding:2px 10px}
.article-main ol.u2tl em a{color:inherit;text-decoration:underline}
.article-main .u2facts{--u2a:var(--u2-blue,#225fc5);display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:10px;overflow:hidden;margin:22px 0}
.article-main .u2facts>div{background:var(--bg);padding:18px 18px 16px}
.article-main .u2facts b{display:block;font-size:28px;line-height:1.05;font-weight:750;letter-spacing:-.01em}
.article-main .u2facts small{display:block;font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--u2a);margin:6px 0 8px}
.article-main .u2facts p{margin:0;font-size:14px;line-height:1.5;color:var(--muted)}
.article-main .u2stats{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin:20px 0}
.article-main .u2stats>div{border:1px solid var(--line);border-radius:7px;padding:10px 12px;background:var(--side)}
.article-main .u2stats b{display:block;font-size:24px;line-height:1.1;font-weight:750}
.article-main .u2stats span{display:block;font-size:12px;line-height:1.4;color:var(--muted);margin-top:3px}
@media(max-width:900px){.article-main .u2stats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:640px){.article-main ol.u2tl::before{left:6px}.article-main ol.u2tl>li{grid-template-columns:1fr;gap:4px;padding:12px 0 12px 26px}.article-main ol.u2tl>li::after{left:2px;top:20px}.article-main ol.u2tl .yr{text-align:left;font-size:28px}.article-main .u2facts{grid-template-columns:1fr}.article-main .u2stats{grid-template-columns:1fr 1fr}}
@media print{.article-main ol.u2tl .yr{color:#000;-webkit-text-stroke:0}.article-main ol.u2tl>li,.article-main .u2facts>div{break-inside:avoid}}
.article-main .u2facts b,.article-main .u2stats b{color:var(--ink)}

/* U-2 readability pass (2026-11-11): lead sentence, related pages box, glossary links, split list items, flight-phase table */
.article-main p.lede{font-size:1.09rem;line-height:1.65;margin-top:0}
.article-main p.related{margin:40px 0 0;padding:13px 16px;border:1px solid var(--line);border-left:3px solid var(--u2-blue,#225fc5);border-radius:6px;background:var(--side);font-size:14.5px;line-height:1.9}
.article-main p.related b{margin-right:6px}
.article-main a.gl{color:inherit;text-decoration:underline dotted;text-decoration-color:var(--muted);text-underline-offset:3px;cursor:help}
.article-main a.gl:hover{color:var(--u2-blue,#225fc5);text-decoration-style:solid}
.article-main li>p.sp{margin:7px 0 0}
.article-main table.u2flow td{font-size:13.5px;line-height:1.75;min-width:120px}
.article-main table.u2flow td:first-child{min-width:110px}
@media print{.article-main a.gl{text-decoration:none}}

/* U-2 example pictures (2026-11-11): every simulator screen picture sits in a closable box with an Example tag and has the same display width */
:root{--ex-w:min(360px,calc(100vw - 48px));--ex-tag:#6b3fd4;--ex-soft:#f1ecfc}
:root[data-theme=dark]{--ex-tag:#b79cff;--ex-soft:#262036}
.article-main details.exd{width:calc(var(--ex-w) + 26px);max-width:100%;margin:18px auto;border:1px solid var(--ex-tag);border-radius:10px;background:var(--bg)}
.article-main details.exd:has(.shot){width:calc(var(--ex-w) + 82px)}
.article-main details.exd>summary{display:flex;align-items:center;gap:10px;cursor:pointer;list-style:none;padding:8px 12px;border-radius:9px;background:var(--ex-soft);font-size:13px;font-weight:600;color:var(--ink)}
.article-main details.exd>summary::-webkit-details-marker{display:none}
.article-main details.exd>summary::after{content:"";margin-left:auto;width:7px;height:7px;border-right:2px solid var(--ex-tag);border-bottom:2px solid var(--ex-tag);transform:rotate(45deg);transition:transform .15s}
.article-main details.exd[open]>summary{border-radius:9px 9px 0 0;border-bottom:1px solid var(--ex-tag)}
.article-main details.exd[open]>summary::after{transform:rotate(-135deg)}
.article-main details.exd .tag{flex:none;padding:2px 9px;border-radius:999px;background:var(--ex-tag);color:#fff;font:700 10.5px/16px -apple-system,"Segoe UI",Arial,sans-serif;letter-spacing:.12em;text-transform:uppercase}
:root[data-theme=dark] .article-main details.exd .tag{color:#1b1f26}
.article-main figure.ex,.article-main figure.shot.ex{display:flex;flex-direction:column;align-items:center;text-align:center;margin:0;padding:12px 12px 10px}
.article-main figure.shot.ex{padding:12px 40px 10px}
.article-main figure.ex img,.article-main figure.shot.ex img,.article-main figure.shot.ex.ex .rw img,.article-main figure.shot.ex.ex.ex img{width:var(--ex-w);max-width:100%;height:auto;margin:0;border:1px solid #333;border-radius:4px;background:#000}
.article-main figure.ex>figcaption,.article-main figure.shot.ex>figcaption{width:100%;text-align:center;font-size:13.5px;line-height:1.45;margin-top:8px}
.article-main figure.ex .rw{width:var(--ex-w);max-width:100%;margin-left:auto;margin-right:auto}
.article-main figure.ex .keys{justify-content:center;width:100%;min-height:0}
.article-main .seq,.article-main .seq.wide,.article-main .scrpair,.article-main .scrpair.wide{display:flex;flex-wrap:wrap;justify-content:center;align-items:flex-start;max-width:none;gap:6px 22px;margin:18px 0}
.article-main .seq figure.ex::before{display:none}.article-main .seq figure.ex{counter-increment:none}
.article-main .seq{counter-reset:q}
.article-main .seq details.exd{counter-increment:q}
.article-main .seq details.exd .tag::before{content:counter(q) " · "}

/* U-2 page maps (2026-11-11): one card per page key, no connector lines */
.article-main figure.map:has(>.branch){padding:0;background:var(--bg);overflow:hidden}
.article-main .branch .root{background:var(--soft);color:var(--ink);text-align:left;font-size:15px;letter-spacing:.06em;padding:12px 18px;border-radius:0;margin:0;border-bottom:1px solid var(--line);display:flex;align-items:baseline;gap:10px}
.article-main .branch .root::after{content:"PAGE MAP";font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--dg)}
.article-main .branch .root.sub{margin-top:0;border-top:1px solid var(--line);background:var(--soft)}
.article-main .branch .cols,.article-main .branch .cols.c3,.article-main .branch .cols.c4,.article-main .branch .cols.c5,.article-main .branch .cols.c6,.article-main .branch .cols.c7{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(100%,230px),1fr));gap:14px;padding:16px 18px 18px}
.article-main .branch .col{padding:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg);display:flex;flex-direction:column}
.article-main .branch .col::before{display:none}
.article-main .branch .hd{display:flex;align-items:center;gap:8px;text-align:left;border:0;border-bottom:1px solid var(--line);border-radius:0;margin:0;padding:9px 12px;background:var(--dg-soft);font-size:13.5px}
.article-main .branch .hd kbd{flex:none;font-size:11px;padding:1px 7px;border-radius:4px;background:var(--dg);color:#fff;border:0;box-shadow:none;letter-spacing:.04em}
:root[data-theme=dark] .article-main .branch .hd kbd{color:#10151c}
.article-main .branch .lf{margin:0;border:0;border-radius:0;border-top:1px solid var(--line);padding:7px 12px 7px 28px;font-size:13px;line-height:1.4}
.article-main .branch .hd+.lf{border-top:0}
.article-main .branch .lf::before{left:13px;top:15px;width:6px;height:6px;border:0;border-radius:50%;background:var(--dg)}
.article-main .branch .lf.inop{color:var(--muted);border-style:solid;font-style:italic}
.article-main .branch .lf.inop::before{background:transparent;border:1.5px solid var(--muted);box-sizing:border-box}

/* U-2 page map buttons, clearer sections, Coming Soon (2026-11-11) */
.article-main .branch a.hd.go{color:var(--ink);text-decoration:none;cursor:pointer;transition:background .12s,color .12s}
.article-main .branch a.hd.go::after{content:"\2192";margin-left:auto;font-weight:700;color:var(--dg)}
.article-main .branch a.hd.go:hover,.article-main .branch a.hd.go:focus-visible{background:var(--dg);color:#fff}
:root[data-theme=dark] .article-main .branch a.hd.go:hover,:root[data-theme=dark] .article-main .branch a.hd.go:focus-visible{color:#10151c}
.article-main .branch a.hd.go:hover::after,.article-main .branch a.hd.go:focus-visible::after{color:inherit}
.article-main .branch a.hd.go:hover kbd,.article-main .branch a.hd.go:focus-visible kbd{background:#fff;color:var(--dg)}
.article-main div.soon{display:flex;align-items:center;gap:14px;margin:18px 0;padding:14px 16px;border:1px solid var(--ex-tag);border-radius:10px;background:var(--ex-soft)}
.article-main div.soon p{margin:0}
.article-main .tag{display:inline-block;padding:2px 9px;border-radius:999px;background:var(--ex-tag);color:#fff;font:700 10.5px/16px -apple-system,"Segoe UI",Arial,sans-serif;letter-spacing:.12em;text-transform:uppercase;vertical-align:middle}
:root[data-theme=dark] .article-main .tag{color:#1b1f26}
.article-main div.soon .tag{flex:none;font-size:12px;padding:4px 12px}

/* U-2 section separators (2026-11-11): parts (h2) are a tinted band, sections (h3) have a full rule with a blue mark, sub-sections (h4) a side bar */
.article-main.u2 h2{margin:72px 0 22px;padding:12px 16px;background:var(--soft);border-left:5px solid var(--u2-blue,#225fc5);border-radius:0 8px 8px 0;font-size:1.45rem;line-height:1.25;scroll-margin-top:84px}
.article-main.u2 h3{position:relative;margin:56px 0 16px;padding-top:22px;border-top:1px solid var(--line);font-size:1.3rem;scroll-margin-top:84px}
.article-main.u2 h3::before{content:"";position:absolute;left:0;top:-2px;width:56px;height:3px;border-radius:2px;background:var(--u2-blue,#225fc5)}
.article-main.u2 h2+h3,.article-main.u2 figure.map+h3,.article-main.u2 p.lede+h3,.article-main.u2>h3:first-child{margin-top:28px}
.article-main.u2 h2+h3{border-top:0;padding-top:0}.article-main.u2 h2+h3::before{display:none}
.article-main.u2 h4{margin:30px 0 10px;padding-left:10px;border-left:3px solid var(--line);font-size:1.02rem;scroll-margin-top:84px}
.article-main.u2 p.colabel{margin:22px 0 6px}

/* U-2 download card (2026-11-11): black sign-off style card - name line, bold "// Download" line, no logo */
.article-main a.dlcard{display:flex;align-items:center;gap:28px;margin:18px 0 24px;padding:26px 36px;border-radius:12px;background:#0b0c0e;color:#d7d9dc;text-decoration:none;font-family:Jost,Arial,sans-serif;border:1px solid #0b0c0e;transition:border-color .15s,box-shadow .15s,transform .15s}
:root[data-theme=dark] .article-main a.dlcard{border-color:#2a2f37}
.article-main a.dlcard:hover,.article-main a.dlcard:focus-visible{border-color:var(--u2-blue,#225fc5);box-shadow:0 8px 22px rgba(0,0,0,.25);transform:translateY(-1px)}
.article-main a.dlcard .dltext{display:flex;flex-direction:column;gap:10px;min-width:0}
.article-main a.dlcard .dlname{font-family:'Jost Card',Jost,Arial,sans-serif;font-size:17px;font-weight:400;line-height:1.4;color:#d7d9dc}
.article-main a.dlcard .dlgo{font-size:19px;font-weight:700;color:#fff;letter-spacing:.01em}
.article-main a.dlcard:hover .dlgo,.article-main a.dlcard:focus-visible .dlgo{text-decoration:underline;text-underline-offset:4px}
.article-main a.dlcard::after{content:"";flex:0 0 auto;margin-left:auto;width:46px;height:46px;border-radius:50%;border:1.5px solid #d7d9dc;background:no-repeat center/22px url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 4v14M6 12l6 6 6-6'/%3E%3C/svg%3E");transition:transform .15s,border-color .15s}
.article-main a.dlcard:hover::after,.article-main a.dlcard:focus-visible::after{transform:translateY(3px);border-color:#ffffff}
@media (max-width:640px){.article-main a.dlcard{flex-direction:column;align-items:flex-start;gap:18px;padding:22px 24px}.article-main a.dlcard::after{width:40px;height:40px;background-size:20px}}
@media print{.article-main a.dlcard{-webkit-print-color-adjust:exact;print-color-adjust:exact}}

/* U-2 Coming Soon box: same yellow as the Caution (warning) callout */
.article-main div.soon{background:#fff9e9;border-color:#eed99b;color:#5d4821}
.article-main div.soon .tag{background:#c6952f;color:#2b2010}
:root[data-theme=dark] .article-main div.soon{background:#332b17;border-color:#725e30;color:#ebd398}
:root[data-theme=dark] .article-main div.soon .tag{background:#c6952f;color:#2b2010}

/* U-2 variant cards (Welcome page) */
.article-main .u2var{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:20px 0 26px}
.article-main .u2var .v{display:flex;flex-direction:column;border:1px solid var(--line);border-top:4px solid var(--muted);border-radius:10px;padding:16px 18px 14px;background:var(--side)}
.article-main .u2var .v.now{border-top-color:var(--ok,#1f8a4c)}
.article-main .u2var .v.upd{border-top-color:var(--u2-blue,#225fc5)}
.article-main .u2var .vst{align-self:flex-start;font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:2px 9px;border-radius:999px;color:#fff;background:var(--u2-blue,#225fc5)}
.article-main .u2var .now .vst{background:var(--ok,#1f8a4c)}
:root[data-theme=dark] .article-main .u2var .vst{color:#111}
.article-main .u2var .vn{display:block;font-size:30px;line-height:1.1;font-weight:800;letter-spacing:-.02em;margin:12px 0 2px;color:var(--ink)}
.article-main .u2var .vck{font-size:13px;font-weight:650;letter-spacing:.05em;text-transform:uppercase;color:var(--muted)}
.article-main .u2var .v>p{margin:0;display:flex;flex-direction:column;flex:1}
.article-main .u2var .vd{display:block;font-size:14.5px;line-height:1.55;margin:10px 0 14px;flex:1}
.article-main .u2var .vft{display:grid;grid-template-columns:1fr 1fr;gap:8px;border-top:1px solid var(--line);padding-top:10px}
.article-main .u2var .vft span{font-weight:700;font-size:15px}
.article-main .u2var .vft small{display:block;font-size:11px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
@media(max-width:900px){.article-main .u2var{grid-template-columns:1fr}}
@media print{.article-main .u2var{grid-template-columns:repeat(3,1fr)}.article-main .u2var .v{break-inside:avoid}}
.article-main .tag.go-tag{background:var(--ok,#1f8a4c)}
.article-main .u2var .vck{display:block}

/* U-2 "How this manual is organized" parts: 2 x 2 grid */
.article-main .u2parts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:20px 0 24px}
.article-main .u2parts .pt{display:flex;flex-direction:column;border:1px solid var(--line);border-top:4px solid var(--u2-blue,#225fc5);border-radius:10px;padding:18px 20px 18px;background:var(--side)}
.article-main .u2parts .pt>p{margin:0;display:flex;flex-direction:column;flex:1}
.article-main .u2parts .phd{display:flex;align-items:center;gap:12px}
.article-main .u2parts .pn{flex:none;display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:8px;background:var(--u2-blue,#225fc5);color:#fff;font-weight:800;font-size:17px}
:root[data-theme=dark] .article-main .u2parts .pn{color:#111}
.article-main .u2parts a.ph{font-size:19px;font-weight:750;letter-spacing:-.01em;color:var(--ink);text-decoration:none}
.article-main .u2parts a.ph:hover{color:var(--u2-blue,#225fc5)}
.article-main .u2parts .pd{display:block;color:var(--muted);font-size:14.5px;line-height:1.55;margin:10px 0 14px}
.article-main .u2parts .pl{display:flex;flex-wrap:wrap;gap:7px}
.article-main .u2parts .pl a{display:inline-block;padding:4px 11px;border:1px solid var(--line);border-radius:999px;background:var(--bg);font-size:13.5px;line-height:1.5;color:var(--ink);text-decoration:none;transition:border-color .15s,color .15s}
.article-main .u2parts .pl a:hover,.article-main .u2parts .pl a:focus-visible{border-color:var(--u2-blue,#225fc5);color:var(--u2-blue,#225fc5)}
@media(max-width:640px){.article-main .u2parts{grid-template-columns:1fr}}
@media print{.article-main .u2parts .pt{break-inside:avoid}}

/* Welcome page: manual organization in the page-map card design, 2 x 2 */
.article-main .branch .c2{grid-template-columns:repeat(2,minmax(0,1fr))}
.article-main figure.orgmap{padding:0;border:0;background:transparent}
.article-main .branch .lf.ds{padding-left:12px;color:var(--muted);font-size:13px}
.article-main .branch .lf.ds::before{display:none}
.article-main .branch .lf a{color:var(--ink);text-decoration:none}
.article-main .branch .lf a:hover,.article-main .branch .lf a:focus-visible{color:var(--dg);text-decoration:underline}
.article-main .orgmap .branch a.hd.go kbd{min-width:2.2em;text-align:center}
@media(max-width:640px){.article-main .branch .c2{grid-template-columns:1fr}}
/* U-2 Story timeline v2: centre spine, alternating cards, era bands */
.article-main ol.u2tl.v2{--cw:#d1302f;--dev:var(--u2-blue,#225fc5);--nw:#1f8a4c;margin:28px 0 34px;padding:0;list-style:none;position:relative}
:root[data-theme=dark] .article-main ol.u2tl.v2{--cw:#ff7b76;--nw:#6fcf97}
.article-main ol.u2tl.v2::before{display:none}
.article-main ol.u2tl.v2>li{display:grid;grid-template-columns:minmax(0,1fr) 92px minmax(0,1fr);gap:0;padding:0;margin:0;position:relative;border:0}
.article-main ol.u2tl.v2>li::after{display:none}
.article-main ol.u2tl.v2>li.e-cw{--ec:var(--cw)}
.article-main ol.u2tl.v2>li.e-dev{--ec:var(--dev)}
.article-main ol.u2tl.v2>li.e-now{--ec:var(--nw)}
/* spine segment for every row */
.article-main ol.u2tl.v2>li::before{content:"";position:absolute;left:50%;top:0;bottom:0;width:3px;margin-left:-1.5px;background:var(--ec);opacity:.35}
.article-main ol.u2tl.v2>li.era:first-child::before{top:50%}
.article-main ol.u2tl.v2>li:last-child::before{bottom:auto;height:38px}
/* era label */
.article-main ol.u2tl.v2>li.era{grid-template-columns:1fr;justify-items:center;padding:14px 0 10px}
.article-main ol.u2tl.v2>li.era span{position:relative;z-index:1;font-size:11.5px;font-weight:750;letter-spacing:.16em;text-transform:uppercase;color:#fff;background:var(--ec);padding:5px 14px;border-radius:999px}
:root[data-theme=dark] .article-main ol.u2tl.v2>li.era span{color:#111}
/* year badge on the spine */
.article-main ol.u2tl.v2 .yr{grid-column:2;grid-row:1;align-self:start;justify-self:center;position:relative;z-index:1;margin-top:18px;padding:5px 10px;border-radius:8px;background:var(--bg);border:2px solid var(--ec);color:var(--ec);-webkit-text-stroke:0;font-size:16px;font-weight:800;line-height:1.1;letter-spacing:.02em;text-align:center;font-variant-numeric:tabular-nums}
.article-main ol.u2tl.v2>li.now .yr{background:var(--ec);color:#fff;box-shadow:0 0 0 6px color-mix(in srgb,var(--ec) 20%,transparent)}
:root[data-theme=dark] .article-main ol.u2tl.v2>li.now .yr{color:#111}
/* event card */
.article-main ol.u2tl.v2>li.ev>div{grid-row:1;position:relative;margin:10px 0;padding:13px 16px 14px;border:1px solid var(--line);border-radius:10px;background:var(--side)}
.article-main ol.u2tl.v2>li.l>div{grid-column:1;border-right:4px solid var(--ec);text-align:right}
.article-main ol.u2tl.v2>li.r>div{grid-column:3;border-left:4px solid var(--ec)}
.article-main ol.u2tl.v2>li.ev>div::after{content:"";position:absolute;top:30px;width:22px;border-top:2px solid var(--ec);opacity:.6}
.article-main ol.u2tl.v2>li.l>div::after{right:-27px}
.article-main ol.u2tl.v2>li.r>div::after{left:-27px}
.article-main ol.u2tl.v2>li.now>div{background:color-mix(in srgb,var(--ec) 8%,var(--bg));border-color:color-mix(in srgb,var(--ec) 45%,var(--line))}
.article-main ol.u2tl.v2 small{color:var(--ec);letter-spacing:.14em}
.article-main ol.u2tl.v2 b{font-size:17px;margin:3px 0 5px;color:var(--ink)}
.article-main ol.u2tl.v2 p{max-width:none;font-size:14.5px}
.article-main ol.u2tl.v2>li.l p{margin-left:auto}
.article-main ol.u2tl.v2 em{--u2a:var(--ec);background:var(--bg)}
@media(max-width:760px){
.article-main ol.u2tl.v2>li{grid-template-columns:70px minmax(0,1fr)}
.article-main ol.u2tl.v2>li::before{left:35px}
.article-main ol.u2tl.v2 .yr{grid-column:1;font-size:14px;padding:4px 7px}
.article-main ol.u2tl.v2>li.l>div,.article-main ol.u2tl.v2>li.r>div{grid-column:2;text-align:left;border-right:1px solid var(--line);border-left:4px solid var(--ec)}
.article-main ol.u2tl.v2>li.now>div{border-right-color:color-mix(in srgb,var(--ec) 45%,var(--line))}
.article-main ol.u2tl.v2>li.l>div::after,.article-main ol.u2tl.v2>li.r>div::after{left:-13px;right:auto;width:9px}
.article-main ol.u2tl.v2>li.era{grid-template-columns:70px 1fr;justify-items:start}
.article-main ol.u2tl.v2>li.era span{grid-column:1 / 3}
}
@media print{.article-main ol.u2tl.v2 .yr{color:#000}.article-main ol.u2tl.v2>li{break-inside:avoid}}
.article-main ol.u2tl.v2>li.ev+li.ev{margin-top:-52px}
.article-main ol.u2tl.v2 em{border-radius:8px}
@media(max-width:760px){.article-main ol.u2tl.v2>li.ev+li.ev{margin-top:0}}
/* U-2 pogo phases (Introduction) */
.article-main .pogo{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:20px 0 24px;counter-reset:none}
.article-main .pogo .pg{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:10px;background:var(--side);padding:14px 16px 16px}
.article-main .pogo .pg>p{margin:0;display:flex;flex-direction:column;flex:1}
.article-main .pogo .pgh{display:flex;align-items:center;gap:10px;font-size:16px;font-weight:750;color:var(--ink)}
.article-main .pogo .pgn{flex:none;display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;background:var(--u2-blue,#225fc5);color:#fff;font-size:13.5px;font-weight:800}
:root[data-theme=dark] .article-main .pogo .pgn{color:#111}
.article-main .pogo .pgt{display:block;font-size:14.5px;line-height:1.55;margin-top:8px}
.article-main .pogo .pgb{display:block;margin-top:12px;padding:9px 12px;border:1px solid #eed99b;border-left:3px solid #c6952f;border-radius:8px;background:#fff9e9;color:#5d4821;font-size:13.5px;line-height:1.5}
:root[data-theme=dark] .article-main .pogo .pgb{background:#332b17;border-color:#725e30;border-left-color:#c6952f;color:#ebd398}
.article-main .pogo .pgbl{display:block;font-size:11px;font-weight:750;letter-spacing:.08em;text-transform:uppercase;margin-bottom:2px}
.article-main .pogo .pgbl::before{content:"\26A0";margin-right:6px}
@media(max-width:700px){.article-main .pogo{grid-template-columns:1fr}}
@media print{.article-main .pogo .pg{break-inside:avoid}}
/* U-2 Variants page */
.article-main .vrel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;margin:18px 0 24px;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.article-main .vrel>div{padding:14px 18px 16px;background:var(--side);position:relative}
.article-main .vrel>div>p{margin:0}
.article-main .vrel .r1{border-top:4px solid var(--ok,#1f8a4c)}
.article-main .vrel .r2{border-top:4px solid var(--u2-blue,#225fc5);border-left:1px solid var(--line)}
.article-main .vrel .rn{display:block;font-size:11px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.article-main .vrel b{display:block;font-size:19px;margin:2px 0 6px;color:var(--ink)}
.article-main .vrel .rl{display:block;font-size:14.5px;line-height:1.55}
.article-main .vrel .r1::after{content:"\2192";position:absolute;right:-13px;top:50%;transform:translateY(-50%);z-index:1;width:24px;height:24px;border-radius:50%;background:var(--bg);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:13px;color:var(--muted)}
.article-main .u2var.vfull .vsel{display:block;font-size:12.5px;color:var(--muted);margin:-6px 0 12px}
.article-main .u2var.vfull .vsel b{color:var(--ink);font-weight:650}
.article-main .u2var.vfull .vgv{display:block;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line);font-size:13px;line-height:1.6}
.article-main .u2var.vfull .vgv small{display:block;font-size:11px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.article-main .u2var.vfull .vgv span{display:block}
.article-main .tag.deftag{background:var(--ok,#1f8a4c);font-size:9.5px;padding:1px 7px;margin-left:2px}
.article-main table.fit small{color:var(--muted)}
.article-main .livgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:8px;margin:16px 0 22px}
.article-main .livgrid>p{display:contents}
.article-main .livgrid span{display:block;border:1px solid var(--line);border-radius:8px;padding:8px 11px;background:var(--side)}
.article-main .livgrid b{display:block;font-size:13.5px;line-height:1.35}
.article-main .livgrid small{display:block;font:600 12px/1.4 ui-monospace,Consolas,monospace;color:var(--muted);margin-top:2px}
@media(max-width:700px){.article-main .vrel{grid-template-columns:1fr}.article-main .vrel .r2{border-left:0;border-top:4px solid var(--u2-blue,#225fc5)}.article-main .vrel .r1::after{display:none}}
/* Timeline v2: fixed geometry so the connector always meets the year badge centre (40px below the row top) */
.article-main ol.u2tl.v2 .yr{box-sizing:border-box;height:30px;line-height:26px;padding:0 10px;margin-top:25px}
.article-main ol.u2tl.v2>li.ev>div::after{top:29px;margin-top:-1px;opacity:1;border-top-color:color-mix(in srgb,var(--ec) 60%,var(--bg))}
/* solid spine colour, so overlapping rows do not draw darker bands */
.article-main ol.u2tl.v2>li::before{opacity:1;background:color-mix(in srgb,var(--ec) 35%,var(--bg))}
@media(max-width:760px){.article-main ol.u2tl.v2 .yr{height:26px;line-height:22px;padding:0 7px;margin-top:27px}}
.article-main table.fit .fitn{display:inline-flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--u2-blue,#225fc5);color:#fff;font-weight:800;font-size:12.5px}
:root[data-theme=dark] .article-main table.fit .fitn{color:#111}
.article-main table.fit td small{display:block;margin-top:3px;line-height:1.45}
.article-main .branch .c2>.col:only-child{grid-column:1/-1}
.article-main .orgmap .lf b{font-weight:650}
.article-main .branch a.hd.go .tag{margin-left:8px}
/* U-2 Sceneries: airfield cards */
.article-main .afields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin:18px 0 22px}
.article-main .afields>p{display:contents}
.article-main a.af{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:12px;background:var(--side);padding:0 0 14px;color:var(--ink);text-decoration:none;overflow:hidden;transition:border-color .15s,box-shadow .15s,transform .15s}
.article-main a.af:hover,.article-main a.af:focus-visible{border-color:var(--u2-blue,#225fc5);box-shadow:0 8px 22px rgba(0,0,0,.10);transform:translateY(-2px);text-decoration:none}
.article-main a.af .afh{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 16px;background:#0b0c0e;color:#fff}
.article-main a.af .afc{font:800 22px/1 ui-monospace,Consolas,monospace;letter-spacing:.08em}
.article-main a.af .afm{font-size:10.5px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:999px;background:var(--ok,#1f8a4c);color:#fff}
.article-main a.af .afn{display:block;font-size:19px;font-weight:750;margin:12px 16px 0}
.article-main a.af .afw{display:block;font-size:12.5px;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:2px 16px 0}
.article-main a.af .afw::before{content:"\25C9";margin-right:6px;color:var(--u2-blue,#225fc5)}
.article-main a.af .afd{display:block;font-size:14px;line-height:1.55;color:var(--muted);margin:10px 16px 12px;flex:1}
.article-main a.af .afs{display:grid;grid-template-columns:1fr 1.4fr 1fr;gap:1px;margin:0 16px;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--line)}
.article-main a.af .afs>span{display:block;background:var(--bg);padding:7px 9px;font-size:13px;font-weight:650;line-height:1.35}
.article-main a.af .afs small{display:block;font-size:10px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:2px}
.article-main a.af .afg{display:block;margin:12px 16px 0;font-size:13px;font-weight:700;color:var(--u2-blue,#225fc5)}
.article-main a.af .afg::after{content:" \2192"}
@media(max-width:760px){.article-main .afields{grid-template-columns:1fr}.article-main a.af .afs{grid-template-columns:1fr 1fr}.article-main a.af .afs>span:nth-child(2){grid-column:1/-1}}
@media print{.article-main a.af{break-inside:avoid}.article-main a.af .afh{-webkit-print-color-adjust:exact;print-color-adjust:exact}}
.article-main a.af .afh{min-height:50px}
.article-main a.af .afm.sep,.article-main div.af .afm.sep{background:#5b6270}
.article-main div.af{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:12px;background:var(--side);padding:0 0 14px;overflow:hidden}
.article-main div.af .afh{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px 16px;background:#0b0c0e;color:#fff;min-height:50px}
.article-main div.af .afc{font:800 22px/1 ui-monospace,Consolas,monospace;letter-spacing:.08em}
.article-main div.af .afm{font-size:10.5px;font-weight:750;letter-spacing:.1em;text-transform:uppercase;padding:3px 9px;border-radius:999px;color:#fff}
.article-main div.af .afn{display:block;font-size:19px;font-weight:750;margin:12px 16px 0}
.article-main div.af .afw{display:block;font-size:12.5px;font-weight:650;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin:2px 16px 0}
.article-main div.af .afw::before{content:"\25C9";margin-right:6px;color:var(--u2-blue,#225fc5)}
.article-main div.af .afd{display:block;font-size:14px;line-height:1.55;color:var(--muted);margin:10px 16px 12px;flex:1}
.article-main .af .afby{display:block;margin:0 16px;font-size:13.5px;font-weight:650}
.article-main .af .afby small{display:block;font-size:10px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.article-main .afields .af.ext .afh{background:#2a2f37}
.article-main a.af.ext .afg::after{content:" \2197"}
.article-main p.afinc{margin:-6px 0 4px;font-size:14px;font-weight:650;color:var(--ok,#1f8a4c)}
.article-main a.af.nolink{cursor:default}.article-main a.af.nolink:hover{transform:none;box-shadow:none;border-color:var(--line)}
.article-main .afields.one{grid-template-columns:1fr}
.article-main .afields.one a.af .afs{grid-template-columns:repeat(3,minmax(0,1fr));max-width:620px}
/* ===== U-2 checklists: printed aircraft checklist card look ===== */
.article-main .cl{--ink:#111;--paper:#fbfaf5;--rule:#111;--fine:#555;position:relative;margin:26px 0 30px;padding:0 0 10px;background:var(--paper);color:var(--ink);border:2px solid var(--rule);border-radius:2px;box-shadow:0 1px 0 #0000000d,0 8px 22px #00000014;font-family:"Arial Narrow","Roboto Condensed","Helvetica Neue",Arial,sans-serif;overflow:visible}
.article-main .cl::before{content:"";position:absolute;inset:4px;border:1px solid var(--rule);pointer-events:none}
.article-main .cl .clh{position:relative;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;margin:4px 4px 0;padding:6px 12px 8px;background:none;border-bottom:2px solid var(--rule)}
.article-main .cl .clh::before{content:"U-2S CHECKLIST";justify-self:start;font:700 10.5px/1 Arial,sans-serif;letter-spacing:.14em;color:var(--fine)}
.article-main .cl .clh::after{content:"NORMAL PROCEDURES";justify-self:end;font:700 10.5px/1 Arial,sans-serif;letter-spacing:.14em;color:var(--fine)}
.article-main .cl .clh h3{grid-column:2;grid-row:1;margin:0;font-size:18px;font-weight:800;letter-spacing:.06em;text-align:center;text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px;color:var(--ink);border:0;padding:0}
.article-main .cl .clh h3::before,.article-main .cl .clh h3::after{display:none}
.article-main .cl .when{margin:8px 18px 2px;padding:6px 0 8px;color:#333;font-size:14px;font-style:italic;border-bottom:1px solid #0003}
.article-main .cl .items{padding:6px 10px 4px}
.article-main .cl .i{margin:0}
.article-main .cl .i>p{margin:0}
.article-main .cl .i .row{display:flex;align-items:baseline;gap:6px;padding:6px 8px 2px}
.article-main .cl .n{flex:none;width:26px;text-align:right;color:var(--ink);font-weight:800;font-size:14.5px}
.article-main .cl .n::after{content:"."}
.article-main .cl .it{font-weight:700;font-size:15px;letter-spacing:.02em;color:var(--ink);text-transform:uppercase}
.article-main .cl .dl{flex:1 1 24px;min-width:24px;border-bottom:2px dotted var(--ink);opacity:.75;transform:translateY(-4px)}
.article-main .cl .st{font-weight:800;font-size:15px;letter-spacing:.02em;text-align:right;max-width:52%;text-transform:uppercase;color:var(--ink)}
.article-main .cl .hn{display:block;padding:0 8px 6px 46px;margin-top:1px;color:#4a4a4a;font-size:13px;line-height:1.45;font-family:Arial,sans-serif}
.article-main .cl a{color:#1a4fa0}
.article-main .cl a.go{font-size:12.5px;font-weight:600}
.article-main .cl h4.sub{display:flex;align-items:center;gap:10px;margin:10px 18px 2px;padding:6px 0 2px;font-size:12.5px;font-weight:800;letter-spacing:.14em;color:var(--ink);text-transform:uppercase}
.article-main .cl h4.sub::before,.article-main .cl h4.sub::after{content:"";flex:1;border-top:1.5px solid var(--ink)}
.article-main .cl .nt .hint{margin:8px 26px 10px 54px;padding:6px 14px 8px;background:transparent;border:0;border-radius:0;color:var(--ink);font-family:Arial,sans-serif;font-size:13.5px;line-height:1.5}
.article-main .cl .nt .hint .callout-label{display:block;text-align:center;font-size:12px;font-weight:800;letter-spacing:.22em;margin:0 0 2px;color:var(--ink)}
.article-main .cl .nt .hint .callout-label::before{content:none}
.article-main .cl .nt .hint p{margin:0}
.article-main .cl .nt .hint p>b:first-child{display:none}
.article-main .cl .nt .hint.warning{border:1.5px solid var(--ink)}
.article-main .cl .nt .hint.danger{border:4px double var(--ink)}
.article-main .cl .tn{color:var(--ink)}
.article-main .cl .tn::before{background:var(--ink)}
/* emergency cards: hazard band and red title */
.article-main .cl.em{--rule:#111;border-color:#111}
.article-main .cl.em .clh{padding-top:16px;border-bottom-color:#111}
.article-main .cl.em .clh::after{content:"EMERGENCY PROCEDURES";color:#b3121b}
.article-main .cl.em .clh h3{color:#b3121b}
.article-main .cl.em::after{content:"";position:absolute;left:4px;right:4px;top:4px;height:8px;background:repeating-linear-gradient(-45deg,#111 0 10px,#f2c200 10px 20px)}
.article-main .cl.em .when{font-style:normal;font-weight:600;color:#111;background:#fff3c4;border:1px solid #d9b100;border-radius:0;padding:7px 10px;margin:10px 18px 4px}
.article-main .cl.em .when::before{content:"CONDITION  ";font-weight:800;letter-spacing:.12em;font-size:11.5px}
@media(max-width:640px){.article-main .cl .clh{grid-template-columns:1fr;gap:4px;text-align:center}.article-main .cl .clh::before,.article-main .cl .clh::after{justify-self:center}.article-main .cl .clh h3{grid-column:1;grid-row:2}.article-main .cl .clh::after{grid-row:3}.article-main .cl .hn{padding-left:38px}.article-main .cl .nt .hint{margin-left:18px;margin-right:10px}.article-main .cl .st{max-width:50%}}
@media print{.article-main .cl{box-shadow:none;background:#fff}}
@media(max-width:640px){
.article-main .cl .i .row{flex-wrap:wrap;row-gap:2px}
.article-main .cl .it{flex:1 0 calc(100% - 34px)}
.article-main .cl .dl{margin-left:32px}
.article-main .cl .st{max-width:none}
}
.article-main .cl.em .clh::after{white-space:nowrap}
.article-main.u2 .cl h4.sub{border-left:0;padding-left:0;margin-left:18px}
/* ===== Checklists v2: site font, plainer and denser, like a printed flight checklist ===== */
.article-main .cl{font-family:inherit;padding:0;border:1.5px solid #111;border-radius:4px;box-shadow:none;margin:22px 0 26px}
.article-main .cl::before{content:none}
.article-main .cl .clh{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0;padding:8px 14px;background:#111;border-bottom:0}
.article-main .cl .clh::before{content:none}
.article-main .cl .clh::after{content:"NORMAL";font:700 10.5px/1 inherit;letter-spacing:.12em;color:#bbb;justify-self:auto}
.article-main .cl .clh h3{grid-column:auto;grid-row:auto;text-align:left;text-decoration:none;font-size:15.5px;font-weight:750;letter-spacing:.05em;color:#fff}
.article-main .cl .when{margin:0;padding:8px 14px;font-style:normal;font-size:13.5px;color:#444;border-bottom:1px solid #0002;background:#f1efe8}
.article-main .cl .items{padding:4px 0 6px}
.article-main .cl .i{border-bottom:1px solid #0000000f}
.article-main .cl .i:last-of-type{border-bottom:0}
.article-main .cl .i .row{padding:5px 14px 1px 12px;gap:6px}
.article-main .cl .n{width:22px;font-weight:700;font-size:13.5px;color:#555}
.article-main .cl .n::after{content:none}
.article-main .cl .it,.article-main .cl .st{font-size:14.5px;font-weight:700;letter-spacing:.01em}
.article-main .cl .st{font-weight:800}
.article-main .cl .dl{border-bottom:1.5px dotted #111;opacity:.55;transform:translateY(-4px)}
.article-main .cl .hn{font-family:inherit;padding:0 14px 6px 40px;font-size:12.5px;color:#5a5a5a;line-height:1.45}
.article-main .cl a.go{font-weight:500;font-size:12px;color:#5a6b85;text-decoration:none;white-space:nowrap}
.article-main .cl a.go:hover{text-decoration:underline;color:#1a4fa0}
.article-main.u2 .cl h4.sub{display:block;margin:8px 0 2px;padding:5px 14px;background:#e6e3da;border:0;font-size:11.5px;font-weight:800;letter-spacing:.1em;color:#222}
.article-main .cl h4.sub::before,.article-main .cl h4.sub::after{content:none}
.article-main .cl .nt .hint{margin:6px 14px 8px 40px;padding:5px 10px;border:0;border-left:3px solid #888;background:#f1efe8;font-family:inherit;font-size:13px;text-align:left}
.article-main .cl .nt .hint .callout-label{display:inline;text-align:left;font-size:11px;letter-spacing:.08em;margin:0 6px 0 0}
.article-main .cl .nt .hint p{display:inline}
.article-main .cl .nt .hint.warning{border:0;border-left:3px solid #c6952f;background:#fff6dc}
.article-main .cl .nt .hint.danger{border:0;border-left:3px solid #b3121b;background:#fde9ea}
/* emergency cards */
.article-main .cl.em::after{height:6px;left:0;right:0;top:0}
.article-main .cl.em .clh{padding-top:12px;background:#b3121b}
.article-main .cl.em .clh h3{color:#fff}
.article-main .cl.em .clh::after{content:"EMERGENCY";color:#ffd6d8}
.article-main .cl.em .when{background:#fff6dc;border:0;border-bottom:1px solid #e3cf8a;margin:0;padding:8px 14px}
.article-main .cl.em .when::before{content:"CONDITION: ";font-size:11px;letter-spacing:.08em}
@media(max-width:640px){.article-main .cl .dl{margin-left:28px}.article-main .cl .hn{padding-left:34px}.article-main .cl .nt .hint{margin-left:14px}}
.article-main .cl.em::after{content:none;display:none}
.article-main .cl.em .clh{padding-top:8px}
table.kb th:first-child,table.kb td:first-child{width:24%;font-weight:600}table.kb th:last-child,table.kb td:last-child{width:120px;text-align:center}table.kb td:nth-child(2) p:first-child{margin-top:0}table.kb td:nth-child(2) p+p{color:var(--muted);font-size:13.5px}table.kb code{font-size:.84em}.ck{font-size:15px}
.efbfig{float:right;width:300px;margin:6px 0 22px 30px}.efbfig img,.efbsub img{width:100%;border-radius:12px;border:1px solid var(--line);box-shadow:0 6px 24px #00000018}.efbfig figcaption,.efbsub figcaption{text-align:left;margin-top:8px;line-height:1.45}.article-main h3{clear:both}.efbpair{display:flex;gap:22px;clear:both;margin:24px 0}.efbpair>p{display:contents}.efbsub{flex:1;margin:0;max-width:300px}.efbsolo{max-width:300px;margin:24px 0}.article-main .efbfig,.article-main .efbsub{margin-top:6px}
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@media(max-width:760px){.efbtab{flex-direction:column;align-items:center}.efbshot{flex:none;width:100%;max-width:300px}.efbshot.tall::after{display:none}}
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@media(max-width:760px){.qpaths{grid-template-columns:1fr}}
.qsg .qb{fill:var(--u2-blue,#225fc5)}.qsg .qfull{fill:var(--u2-blue,#225fc5);opacity:.18}.qsg .qbt{font-size:12px;font-weight:700;fill:#fff}.qsg .qn{fill:var(--ink)}.qsg .qnt{font-size:11px;font-weight:800;fill:var(--bg,#fff)}.qsg .qready{stroke:#1e9e5a;stroke-width:2;stroke-dasharray:5 4}.qsg .qrt{fill:#1e9e5a;font-weight:700;font-size:12.5px}.qsg .t{font-size:13px}.qsg .t.h{font-size:13px;font-weight:800;letter-spacing:.06em}
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.qsg .qarr{fill:var(--u2-blue,#225fc5);opacity:.35}.qsg .qft{fill:var(--u2-blue,#225fc5)}
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.b101-part{display:flex;flex-direction:column;gap:2px;margin:56px 0 6px;padding:22px 24px;border-radius:14px;background:var(--ink,#111);color:var(--bg,#fff)}.b101-part>p{display:contents}.b101-part .pn{font-size:11.5px;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:#8fb4ff}.b101-part .pt{font-size:26px;font-weight:800;letter-spacing:-.01em;line-height:1.2}.b101-part .pd{font-size:14.5px;opacity:.75}.b101-part+h3{margin-top:28px}
.b101-stats{grid-template-columns:repeat(3,minmax(0,1fr))!important;gap:12px!important}.b101-stats>p{display:contents}.b101-stat .v{font-size:1.75rem!important;color:var(--u2-blue,#225fc5)}.b101-stat .l{font-size:14.5px!important;font-weight:750;color:var(--ink)!important}.b101-stat .x{font-size:13.5px;line-height:1.5;color:var(--muted)}
@media(max-width:760px){.b101-stats{grid-template-columns:1fr 1fr!important}}
.b101-flights{grid-template-columns:repeat(3,minmax(0,1fr))!important}.b101-tip{display:block;margin-top:12px;padding-top:10px;border-top:1px solid var(--line);font-size:13px;line-height:1.5;color:var(--muted)}
@media(max-width:760px){.b101-flights{grid-template-columns:1fr!important}}
.b101-stat>p{display:contents}.b101-stat .v,.b101-stat .l,.b101-stat .x{display:block}
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/* Technical schematic style for the Aircraft Systems diagrams */
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.map.tech rect{shape-rendering:crispEdges}
:root[data-theme=dark] .article-main figure.map.tech{--dg:#8db9ff;--dg-soft:#1d2a3f;--tg:#24282e}
.map.tech .t{letter-spacing:.02em}.map.tech .t.s{text-transform:none;letter-spacing:0}.map.tech .t.h{letter-spacing:.1em}
.map.tech .t{font-size:11.5px}.map.tech .t.s{font-size:11.5px}.map.tech .t.h{font-size:11px}