/* Aircraft reading layout and progressively enhanced photograph viewer. */
.detail-top{padding-top:24px}.detail-heading{gap:24px;margin-bottom:24px}.detail-heading .lead{max-width:72ch}.detail-heading h1{font-size:clamp(2rem,4.2vw,3.6rem)}
.aircraft-photo-viewer{scroll-margin-top:100px;margin:24px 0 18px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--surface)}
.aircraft-photo-viewer [hidden]{display:none!important}.aircraft-photo-slide{margin:0}.aircraft-photo-frame{height:clamp(240px,39vw,485px);background:var(--surface-2);display:grid;place-items:center;touch-action:pan-y}
.aircraft-photo-frame{display:block;overflow:hidden}.aircraft-photo-frame img{width:100%;height:100%;min-height:0;max-height:100%;object-fit:contain;display:block}.aircraft-photo-slide figcaption{display:flex;justify-content:space-between;align-items:start;gap:16px;padding:14px 18px;font-size:.82rem;line-height:1.6;min-height:72px}
.aircraft-photo-slide figcaption>span:first-child{max-width:70ch}.photo-attribution{display:flex;flex-direction:column;align-items:flex-end;flex-shrink:0;max-width:42%;text-align:right}.photo-attribution a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
.photo-viewer-toolbar,.photo-dialog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px;border-top:1px solid var(--line)}.photo-navigation,.photo-viewer-actions{display:flex;align-items:center;gap:8px}.photo-navigation [data-photo-counter]{font-size:.8rem;font-variant-numeric:tabular-nums;min-width:92px;text-align:center;color:var(--muted)}
.photo-control{font:inherit;font-size:.8rem;min-height:40px;min-width:40px;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--fg);cursor:pointer}.photo-control:hover,.photo-control[aria-pressed=true]{background:var(--surface-2);border-color:var(--brand)}.photo-control:disabled{opacity:.4;cursor:default}
.photo-thumbnails{display:flex;gap:10px;padding:4px 16px 16px;overflow-x:auto;scrollbar-width:thin}.photo-thumbnail{position:relative;flex:0 0 116px;height:76px;border:2px solid transparent;border-radius:5px;overflow:hidden;opacity:.65;background:var(--surface-2)}.photo-thumbnail img{width:100%;height:100%;object-fit:cover;display:block}.photo-thumbnail span{position:absolute;bottom:3px;left:4px;background:#10151ed9;color:white;padding:1px 5px;border-radius:3px;font-size:.65rem}.photo-thumbnail[aria-current=true],.photo-thumbnail:hover{opacity:1;border-color:var(--brand)}
.aircraft-photo-viewer :focus-visible,.aircraft-contents :focus-visible{outline:3px solid var(--brand);outline-offset:3px}.photo-error{margin:0;padding:0 16px 12px;color:var(--muted);font-size:.85rem}
.aircraft-photo-dialog{color:var(--fg);background:var(--bg);border:1px solid var(--line);border-radius:10px;width:min(1600px,96vw);max-width:96vw;max-height:96dvh;padding:0}.aircraft-photo-dialog::backdrop{background:#000d}.aircraft-photo-dialog .aircraft-photo-frame{height:min(73dvh,950px)}.aircraft-photo-dialog .photo-dialog-toolbar{border-top:0;border-bottom:1px solid var(--line)}
.aircraft-availability{margin:12px 0;gap:16px;align-items:center}.detail-stats{margin-top:16px;padding:18px 0;gap:20px}.detail-stats strong{font-size:.95rem}.detail-body{grid-template-columns:260px minmax(0,1fr);gap:44px;padding-top:30px}
.section-nav.aircraft-contents{display:block;position:sticky;top:20px;align-self:start;max-height:calc(100dvh - 40px);overflow:auto;border:1px solid var(--line);border-radius:10px;background:var(--surface);padding:0}.aircraft-contents details>summary{padding:17px 18px;font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;list-style:none;cursor:pointer;border-bottom:1px solid var(--line)}.aircraft-contents details>summary::-webkit-details-marker{display:none}.contents-current{display:none}.aircraft-contents nav{padding:10px}.section-nav.aircraft-contents nav a{font-size:.9rem;line-height:1.4;padding:11px 12px;margin:2px 0;border:0;border-radius:5px;display:flex;gap:10px;align-items:center;justify-content:space-between;color:var(--muted)}.section-nav.aircraft-contents nav a[aria-current=location]{color:var(--fg);background:var(--surface-2);box-shadow:inset 3px 0 var(--brand)}.section-nav.aircraft-contents nav a:hover{color:var(--fg);background:var(--surface-2)}.section-nav.aircraft-contents small{font-size:.7rem;padding:1px 6px;background:var(--bg);border-radius:4px}.section-nav.aircraft-contents .contents-photos{font-size:.78rem;padding:16px 22px;border-top:1px solid var(--line);color:var(--muted);display:block}
.article-content>section{margin-bottom:36px;padding-bottom:36px;scroll-margin-top:32px}.article-content>section>h2{font-size:clamp(1.5rem,2.2vw,2rem);margin-bottom:16px}.article-content p{line-height:1.8}.article-content .body-large{font-size:1.05rem;line-height:1.85}.article-content .eyebrow{font-size:.7rem;letter-spacing:.11em}.article-content .source-context{font-size:.78rem;line-height:1.6;color:var(--muted);margin-top:10px}.history-chapter{margin:22px 0}.history-chapter h3{font-size:1.18rem}.article-content .source-line{font-size:.8rem;line-height:1.6;overflow-wrap:anywhere}.background-source{margin-top:20px}
.article-content .pilot-perspective{margin:22px 0;padding:24px 26px;border:1px solid var(--line);border-left:3px solid var(--brand);border-radius:8px;background:var(--surface)}.pilot-perspective h3{font-size:1.2rem;margin:0 0 6px}.pilot-perspective .pilot-author{font-size:.85rem;color:var(--brand);margin:0 0 16px;font-weight:600}.pilot-perspective blockquote{margin:20px 0;padding:0 0 0 18px;font-size:1.1rem}.pilot-perspective blockquote p{margin:0}.article-content .note-card{padding:22px 24px;margin:18px 0;border-radius:8px}.note-card h3{font-size:1.12rem;margin:0 0 10px}
.implementation-card.implementation-disclosure{padding:0;margin:20px 0;overflow:hidden;border-radius:8px;scroll-margin-top:32px}.implementation-disclosure>summary{list-style:none;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:20px 22px;cursor:pointer}.implementation-disclosure>summary::-webkit-details-marker{display:none}.implementation-disclosure>summary h3{font-size:1.08rem;margin:6px 0}.implementation-disclosure>summary p{font-size:.8rem;margin:0;color:var(--muted)}.implementation-disclosure>summary:after{content:'+';font-size:1.5rem;color:var(--brand)}.implementation-disclosure[open]>summary:after{content:'−'}.implementation-disclosure[open]>summary{border-bottom:1px solid var(--line)}.implementation-disclosure>summary:hover{background:var(--surface-2)}.implementation-expanded{padding:22px}.implementation-expanded .implementation-detail{margin-top:24px}.implementation-expanded h4{font-size:1rem}.implementation-jump{gap:8px}.implementation-jump a{font-size:.8rem}.detail-body .resource-row{padding:14px 0}.detail-body .resource-row strong{font-size:.9rem}.detail-body .resource-row small{font-size:.78rem}
.aircraft-contents [hidden]{display:none!important}.section-nav.aircraft-contents .contents-subsections{margin:0 8px 8px 18px;border-left:1px solid var(--line)}.section-nav.aircraft-contents .contents-subsections a{font-size:.76rem;padding:8px 10px;line-height:1.5;display:block}
@media(min-width:901px){.aircraft-contents details>summary{cursor:default;pointer-events:none}}
@media(max-width:1100px) and (min-width:901px){.detail-body{grid-template-columns:225px minmax(0,1fr);gap:28px}.photo-attribution{max-width:40%}}
@media(max-width:900px){.detail-body{display:block;padding-top:16px}.section-nav.aircraft-contents{top:10px;z-index:15;max-height:75dvh;overflow:auto;margin:0 0 26px;box-shadow:0 5px 16px #0002}.aircraft-contents details>summary{display:flex;justify-content:space-between;align-items:center;gap:12px;border:0;padding:14px 16px}.aircraft-contents details[open]>summary{border-bottom:1px solid var(--line)}.aircraft-contents details>summary:after{content:'⌄';color:var(--brand)}.aircraft-contents details[open]>summary:after{content:'⌃'}.contents-current{display:block;margin-left:auto;text-transform:none;font-weight:400;letter-spacing:0;color:var(--muted);font-size:.78rem}.article-content>section{scroll-margin-top:78px}.implementation-card.implementation-disclosure{scroll-margin-top:78px}.photo-attribution{flex-shrink:1}.detail-stats{display:flex;flex-wrap:wrap}.detail-stats>div{flex:1 0 120px}.aircraft-availability{flex-wrap:wrap}}
@media(max-width:600px){.detail-top{padding-top:16px}.detail-heading{align-items:start}.detail-heading h1{font-size:2rem}.detail-heading .button{font-size:.75rem;padding:9px 10px}.aircraft-photo-frame{height:250px}.aircraft-photo-slide figcaption{display:block;padding:12px 14px;font-size:.75rem;min-height:112px}.photo-attribution{max-width:none;align-items:start;text-align:left;margin-top:6px;gap:2px}.photo-viewer-toolbar{flex-wrap:wrap;padding:8px 10px}.photo-viewer-actions{margin-left:auto}.photo-control{font-size:.72rem;padding:7px 9px}.photo-navigation [data-photo-counter]{min-width:80px;font-size:.73rem}.photo-thumbnail{flex-basis:88px;height:60px}.photo-thumbnails{padding:4px 10px 12px;gap:8px}.article-content .pilot-perspective,.article-content .note-card{padding:18px}.implementation-disclosure>summary,.implementation-expanded{padding:17px}.aircraft-photo-dialog .aircraft-photo-frame{height:60dvh}}
@media(prefers-reduced-motion:reduce){.aircraft-photo-viewer *{scroll-behavior:auto!important}}