.site-header{z-index:50;padding-top:env(safe-area-inset-top,0px);background:0 0;border-bottom:1px solid #0000;transition:background .3s,border-color .3s,box-shadow .3s;position:sticky;top:0}.site-header.scrolled{-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);background:#f8fbffeb;border-bottom-color:#0b5bd41f;box-shadow:0 4px 20px #0a224c14}.site-header:not(.scrolled) .brand-name,.site-header:not(.scrolled) .brand-lockup{color:var(--text-strong)}.site-header:not(.scrolled) .brand-tagline{color:var(--text-muted)}.site-header:not(.scrolled) .nav-link{color:var(--text-strong);font-weight:600}.site-header:not(.scrolled) .nav-link:hover{color:var(--brand-primary-strong)}.site-header:not(.scrolled) .header-utility-link{color:var(--text-strong)}.site-header:not(.scrolled) .header-utility-link:hover{color:var(--brand-primary-strong)}.site-header:not(.scrolled) .mobile-quick-link{color:var(--text-strong);font-weight:700}.site-header:not(.scrolled) .mobile-quick-link:hover{color:var(--brand-primary-strong)}.site-header-inner{justify-content:space-between;align-items:center;gap:1rem;min-height:80px;display:flex}.brand-lockup{align-items:center;gap:.75rem;display:inline-flex}.brand-badge{object-fit:contain;flex:none;width:38px;height:38px;display:block}.brand-text{flex-direction:column;align-items:flex-start;display:flex}.brand-name{font-family:var(--font-product), "Segoe UI", system-ui, sans-serif;letter-spacing:-.02em;font-size:1.3rem;font-weight:700;line-height:1;display:block}.brand-tagline{font-family:var(--font-sans-heading,var(--font-sans));letter-spacing:.16em;text-transform:uppercase;color:var(--text-muted);opacity:.7;margin-top:2px;font-size:9px;font-weight:600;display:block}.site-nav{align-items:center;gap:.5rem;display:inline-flex}.nav-link{color:var(--text-muted);letter-spacing:.005em;padding:.3rem .5rem;font-size:.875rem;font-weight:500;transition:color .18s}.nav-link:hover{color:var(--brand-primary-strong)}.header-cta-group{align-items:center;gap:.7rem;display:inline-flex}.header-utility-link{color:var(--text-muted);text-underline-offset:2px;font-size:.86rem;font-weight:700;text-decoration:underline;text-decoration-thickness:1.2px}.header-utility-link:hover{color:var(--brand-primary-strong)}.mobile-quick-nav{display:none}.mobile-quick-link{white-space:nowrap;color:var(--text-muted);justify-content:center;align-items:center;padding:.3rem .5rem;font-size:.82rem;font-weight:700;display:inline-flex}.mobile-quick-link:hover{color:var(--brand-primary-strong)}.hamburger-btn{appearance:none;cursor:pointer;width:40px;height:40px;color:var(--text-muted);background:0 0;border:1px solid #0000;border-radius:11px;flex:none;place-items:center;transition:background .2s,color .2s;display:none}.hamburger-btn:hover{color:var(--text-strong);background:#0a224c14}.site-header.scrolled .hamburger-btn{color:var(--text-muted)}.site-header.scrolled 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.site-header.scrolled .button.button-subtle:hover{background:#94a3b82e;border-color:#94a3b852}.theme-toggle{appearance:none;cursor:pointer;width:38px;height:38px;color:var(--text-muted);background:0 0;border:1px solid #0000;border-radius:11px;flex:none;place-items:center;transition:background .2s,color .2s,transform .15s;display:grid}.theme-toggle:hover{color:var(--text-strong);background:#0a224c14}.theme-toggle:active{transform:scale(.92)}.theme-toggle svg{width:18px;height:18px;display:block}.theme-toggle .sun,.theme-toggle[data-mode=dark] .moon{display:none}.theme-toggle[data-mode=dark] .sun{display:block}.site-header.scrolled .theme-toggle{color:var(--text-muted)}.site-header.scrolled .theme-toggle:hover{color:var(--text-strong);background:#0a224c14}[data-theme=dark] .site-header.scrolled .theme-toggle{color:#ffffffb3}[data-theme=dark] .site-header.scrolled .theme-toggle:hover{color:#fff;background:#ffffff14}