/* Shared shell. Deliberately scoped to avoid changing labs and article layouts. */
.lngr-container{width:min(1240px,calc(100% - 48px));margin-inline:auto}
.lngr-header{background:var(--paper);color:var(--ink);border-bottom:1px solid var(--line)}
/* Explicit link colours also cover pages without the legacy base stylesheet. */
.lngr-header a,.lngr-footer a{color:inherit}
.lngr-header a:hover,.lngr-footer a:hover{color:var(--accent)}
.lngr-header a:focus-visible,.lngr-footer a:focus-visible{outline:3px solid var(--accent);outline-offset:4px}
.lngr-header-inner{display:flex;align-items:center;gap:20px;flex-wrap:wrap;padding-block:22px}
.lngr-brand{font:900 25px/1.15 system-ui,sans-serif;letter-spacing:-1.2px;text-decoration:none;white-space:nowrap}
.lngr-brand small{display:block;font:9px/1.5 ui-monospace,monospace;letter-spacing:1.8px;margin-top:5px}
.lngr-nav{display:flex;align-items:center;gap:6px 19px;flex:1;flex-wrap:wrap;justify-content:flex-end}
.lngr-nav a,.lngr-languages a{font:650 13px/1.5 system-ui,sans-serif;text-decoration:none;padding:10px 0;border-bottom:2px solid transparent}
.lngr-nav a[aria-current]{border-bottom-color:var(--accent);color:var(--accent)}
.lngr-languages{display:flex;gap:4px;align-items:center}
.lngr-languages a{padding:9px 11px}
.lngr-languages a[aria-current]{background:var(--ink);color:var(--white)}
.lngr-footer{border-top:1px solid var(--line);padding:30px 0 40px;background:var(--paper);color:var(--muted);font:13px/1.7 system-ui,sans-serif}
.lngr-footer-top{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.lngr-footer-top strong{font-size:20px;color:var(--ink)}
.lngr-footer nav{display:flex;gap:8px 20px;flex-wrap:wrap}
.lngr-footer nav a{padding-block:8px}
.lngr-footer p{margin:16px 0 0}
.lngr-skip{position:fixed;top:-150px;left:16px;background:var(--ink);color:var(--white);padding:14px;z-index:1000}
.lngr-skip:focus{top:12px}
@media(max-width:1100px){.lngr-nav{order:3;flex-basis:100%;justify-content:flex-start}.lngr-languages{margin-left:auto}}
@media(max-width:600px){.lngr-container{width:calc(100% - 32px)}.lngr-header-inner{gap:12px;padding-block:17px}.lngr-nav{gap:2px 17px}.lngr-nav a{font-size:12px;min-height:40px}.lngr-brand{font-size:23px}.lngr-brand small{font-size:8px;letter-spacing:1.2px}}
@media print{.lngr-header,.lngr-footer,.lngr-skip{display:none}}

/* Shared LNGR monogram, traced from the retained brand board. */
.lngr-brand{display:inline-flex;align-items:center;gap:13px}
.lngr-signet{display:block;width:60px;height:auto;flex:0 0 60px}
@media(max-width:600px){.lngr-brand{gap:10px}.lngr-signet{width:48px;flex-basis:48px}}