.header{z-index:var(--z-100);-webkit-backdrop-filter:blur(20px);transition:all var(--transition-base);background:#fffffff2;border-bottom:1px solid #0000;position:fixed;top:0;left:0;right:0}.header.scrolled{border-bottom-color:var(--gray-200);box-shadow:var(--shadow-sm);background:#fffffffa}.nav{justify-content:space-between;align-items:center;height:80px;display:flex}.logo{transition:transform var(--transition-base);flex-direction:column;align-items:flex-start;display:flex}.logo:hover{transform:translate(2px)}.logo-text{font-family:var(--font-display);font-size:var(--text-2xl);color:var(--primary-900);letter-spacing:var(--tracking-tight);font-weight:400}.logo-tagline{font-size:var(--text-xs);color:var(--gray-500);text-transform:uppercase;letter-spacing:var(--tracking-widest);margin-top:-2px;font-weight:500}.nav-links{align-items:center;gap:var(--space-12);list-style:none;display:flex}.nav-link{font-size:var(--text-sm);color:var(--gray-700);text-transform:uppercase;letter-spacing:var(--tracking-wider);padding:var(--space-2)0;transition:color var(--transition-base);font-weight:500;position:relative}.nav-link:after{content:"";background:var(--primary-900);width:0;height:1px;transition:width var(--transition-base);position:absolute;bottom:0;left:0}.nav-link:hover{color:var(--primary-900)}.nav-link:hover:after{width:100%}.nav-item-with-dropdown{position:relative}.dropdown-menu{background:var(--white);border:1px solid var(--gray-200);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:var(--space-2)0;opacity:0;visibility:hidden;min-width:180px;transition:all var(--transition-base);margin-top:var(--space-2);z-index:var(--z-50);list-style:none;position:absolute;top:100%;left:50%;transform:translate(-50%)}.nav-item-with-dropdown:hover .dropdown-menu{opacity:1;visibility:visible}.dropdown-link{padding:var(--space-3)var(--space-4);font-size:var(--text-sm);color:var(--gray-700);text-transform:none;letter-spacing:normal;transition:all var(--transition-base);font-weight:500;display:block}.dropdown-link:hover{background:var(--gray-50);color:var(--primary-900)}.mobile-toggle{cursor:pointer;width:32px;height:32px;display:none;position:relative}.hamburger{background:var(--primary-900);width:24px;height:2px;transition:all var(--transition-base);position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.hamburger:before,.hamburger:after{content:"";background:var(--primary-900);width:24px;height:2px;transition:all var(--transition-base);position:absolute}.hamburger:before{top:-8px}.hamburger:after{bottom:-8px}.hamburger.open{background:0 0}.hamburger.open:before{top:0;transform:rotate(45deg)}.hamburger.open:after{bottom:0;transform:rotate(-45deg)}.mobile-menu{background:var(--white);border-bottom:1px solid var(--gray-200);opacity:0;transition:all var(--transition-base);pointer-events:none;position:fixed;top:80px;left:0;right:0;transform:translateY(-100%)}.mobile-menu.open{opacity:1;pointer-events:all;transform:translateY(0)}.mobile-menu-content{padding:var(--space-6)0}.mobile-nav-link{padding:var(--space-4)var(--container-padding);font-size:var(--text-base);color:var(--gray-700);text-transform:uppercase;letter-spacing:var(--tracking-wider);transition:all var(--transition-base);font-weight:500;display:block}.mobile-nav-link:hover{background:var(--gray-50);color:var(--primary-900)}.mobile-dropdown{padding-left:var(--space-4);background:var(--gray-50)}.mobile-dropdown-link{padding:var(--space-3)var(--container-padding);font-size:var(--text-sm);color:var(--gray-600);text-transform:none;letter-spacing:normal;transition:all var(--transition-base);font-weight:400;display:block}.mobile-dropdown-link:hover{background:var(--gray-100);color:var(--primary-900)}@media (max-width:768px){.desktop-only{display:none}.mobile-toggle{display:block}}