/* Scoped navigation for specialist pages: preserve their tools and content styles. */
#upgrade-header{--ink:#e7e9ec;--muted:#a4abb4;--blue:#5b8def;--line:#252a33;--mono:"Geist Mono",monospace;position:sticky;top:0;z-index:60;border-bottom:1px solid #252a33;background:#0a0b0df5;backdrop-filter:blur(18px);font-family:"Geist",system-ui,sans-serif;color:var(--ink);padding:0;margin:0}
#upgrade-header *{box-sizing:border-box}#upgrade-header a{color:inherit;text-decoration:none}#upgrade-header .header-inner{width:min(1392px,calc(100% - 80px));height:84px;margin:auto;display:flex;align-items:center;gap:40px}#upgrade-header .brand{display:inline-flex;align-items:center;gap:11px;white-space:nowrap;font-size:17px;letter-spacing:-.65px}#upgrade-header .brand b{font-weight:650}#upgrade-header .brand-mark{width:33px;height:35px;border:1px solid #343840;border-radius:9px;display:grid;place-items:center;font:600 13px var(--mono);position:relative;letter-spacing:-1px}#upgrade-header .brand-mark i{position:absolute;bottom:7px;right:5px;width:3px;height:3px;border-radius:1px;background:var(--blue)}#upgrade-header .brand-dot{display:inline-block;width:5px;height:5px;border-radius:1.7px;background:var(--blue);margin-left:4px}#upgrade-header nav{display:flex;align-items:center;gap:24px;margin-left:auto}#upgrade-header nav a{font-size:13px;min-height:44px;display:flex;align-items:center;color:var(--muted);position:relative}#upgrade-header nav a:hover,#upgrade-header nav a[aria-current]{color:var(--ink)}#upgrade-header .header-actions{display:flex;align-items:center;gap:12px}#upgrade-header .language{font:12px var(--mono);border:1px solid var(--line);border-radius:6px;min-width:38px;min-height:36px;display:grid;place-items:center}#upgrade-header .menu-toggle{display:none;color:var(--ink);background:none;border:1px solid var(--line);border-radius:8px;width:42px;height:42px;align-items:center;justify-content:center;flex-direction:column;gap:6px}#upgrade-header .menu-toggle span{width:17px;height:1px;background:var(--ink)}#upgrade-header a:focus-visible,#upgrade-header button:focus-visible{outline:2px solid #9fbeff;outline-offset:4px}
@media(max-width:1100px){#upgrade-header .header-inner{height:70px;width:calc(100% - 40px);gap:20px}#upgrade-header .header-actions{margin-left:auto}#upgrade-header .menu-toggle{display:flex}#upgrade-header nav{display:none;position:absolute;top:69px;left:0;right:0;background:#10141b;padding:12px 24px 22px;border-bottom:1px solid #343b48;flex-direction:column;align-items:stretch;gap:3px}#upgrade-header.menu-open nav{display:flex}#upgrade-header nav a{padding:7px 12px;font-size:14px}}
@media(max-width:560px){#upgrade-header .brand{font-size:16px}}