.bv-header{position:sticky;top:0;z-index:40;background:rgba(243,244,246,0.9);backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border-subtle)}.bv-header-inner{display:flex;align-items:center;justify-content:space-between;padding-top:var(--space-3);padding-bottom:var(--space-3);gap:var(--space-4)}.bv-brand{display:flex;align-items:center;gap:var(--space-3);color:var(--color-heading)}.bv-brand:hover,.bv-brand:focus-visible{text-decoration:none}.bv-brand-mark{width:40px;height:40px;border-radius:12px;background:radial-gradient(circle at 20% 0,var(--color-primary),transparent 55%),linear-gradient(145deg,#030712,#111827);display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md)}.bv-brand-symbol{width:18px;height:18px;border-radius:6px;border:1px solid rgba(255,255,255,0.5);box-shadow:0 0 0 1px rgba(15,23,42,0.5);background:radial-gradient(circle at 30% 0,#bfdbfe,transparent 60%)}.bv-brand-text{display:flex;flex-direction:column;gap:2px}.bv-brand-title{font-family:var(--font-display);font-weight:600;font-size:var(--font-size-lg);color:var(--color-heading);letter-spacing:0.03em}.bv-brand-tagline{font-size:var(--font-size-xs);text-transform:uppercase;letter-spacing:0.16em;color:var(--color-text-soft)}.bv-nav{display:flex;align-items:center}.bv-nav-list{display:flex;align-items:center;gap:var(--space-4)}.bv-nav-link{font-size:var(--font-size-sm);font-weight:500;color:var(--color-text-muted);padding:0.35rem 0;border-bottom:2px solid transparent;transition:color var(--transition-base),border-color var(--transition-base),background-color var(--transition-base)}.bv-nav-link:hover,.bv-nav-link:focus-visible{color:var(--color-heading);border-color:var(--color-primary-soft)}.bv-nav-item{position:relative}.bv-nav-cta .bv-nav-link-cta{padding:0.5rem 1.25rem;border-radius:999px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-strong));color:#fff;border:none;box-shadow:var(--shadow-soft-blue);display:inline-flex;align-items:center;gap:0.5rem}.bv-nav-cta .bv-nav-link-cta::after{content:"\f061";font-family:"Font Awesome 6 Free";font-weight:900;font-size:0.8em}.bv-nav-cta .bv-nav-link-cta:hover,.bv-nav-cta .bv-nav-link-cta:focus-visible{background:linear-gradient(135deg,var(--color-primary-strong),#1743a5);box-shadow:var(--shadow-lg);color:#fff}.bv-nav-cta .bv-nav-link-cta:active{box-shadow:var(--shadow-md)}.nav-toggle{display:none}@media(max-width:959.98px){.bv-header-inner{padding-top:var(--space-2);padding-bottom:var(--space-2)}.bv-nav-list{gap:var(--space-3)}.bv-brand-title{font-size:var(--font-size-md)}.bv-brand-tagline{display:none}}@media(max-width:767.98px){.bv-header-inner{gap:var(--space-2)}.bv-nav{position:absolute;inset-inline:0;top:100%;background:rgba(243,244,246,0.98);backdrop-filter:blur(14px);border-bottom:1px solid var(--color-border-subtle);transform-origin:top;transform:scaleY(0.9);opacity:0;visibility:hidden;transition:opacity var(--transition-base),transform var(--transition-base),visibility var(--transition-base)}.bv-nav-list{flex-direction:column;align-items:flex-start;padding:var(--space-3) var(--space-4);gap:var(--space-2)}.bv-nav-link{width:100%;padding:0.6rem 0}.bv-nav-cta .bv-nav-link-cta{width:100%;justify-content:center;margin-top:0.25rem}.nav-toggle{display:flex;margin-left:auto}.bv-header-inner.menu-open .bv-nav{opacity:1;visibility:visible;transform:scaleY(1)}.bv-header-inner.menu-open .nav-toggle{background-color:var(--color-surface);box-shadow:var(--shadow-sm)}.bv-header-inner.menu-open .nav-toggle span{background-color:var(--color-heading)}}@media(prefers-reduced-motion:reduce){.bv-nav{transition:none}.bv-nav-link,.bv-nav-cta .bv-nav-link-cta{transition:none}}