.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.97);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--color-border)}.site-header.scrolled{box-shadow:var(--shadow-md)}.header-inner{max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg);display:flex;align-items:center;justify-content:space-between;height:64px}.site-logo{display:flex;align-items:center;gap:var(--space-sm);text-decoration:none;color:var(--color-text)}.site-logo:hover{text-decoration:none}.logo-icon{font-size:1.5rem}.logo-text{font-family:var(--font-display);font-size:1.35rem;font-weight:700;color:var(--color-primary);letter-spacing:-.01em}.main-nav{display:flex;align-items:center;gap:var(--space-xs)}.main-nav a,.nav-dropdown>.nav-trigger{font-family:var(--font-body);font-size:.9rem;font-weight:500;color:var(--color-text-secondary);padding:var(--space-sm)var(--space-md);border-radius:var(--radius-sm);transition:all .2s ease;text-decoration:none;white-space:nowrap;background:0 0;border:none;cursor:pointer}.main-nav a:hover,.nav-dropdown:hover>.nav-trigger{color:var(--color-primary);background:var(--color-bg-alt);text-decoration:none}.nav-dropdown{position:relative}.nav-trigger{display:flex;align-items:center;gap:4px}.nav-trigger .chevron{font-size:.65rem;transition:transform .2s ease}.nav-dropdown:hover .chevron{transform:rotate(180deg)}.dropdown-menu{display:none;position:absolute;top:100%;left:50%;transform:translateX(-50%);min-width:240px;background:var(--color-bg-card);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);padding:var(--space-sm);z-index:100}.nav-dropdown:hover .dropdown-menu,.nav-dropdown.open .dropdown-menu{display:block}.dropdown-menu a{display:block;padding:var(--space-sm)var(--space-md);font-size:.875rem;color:var(--color-text-secondary);border-radius:var(--radius-sm)}.dropdown-menu a:hover{background:var(--color-bg-alt);color:var(--color-primary);text-decoration:none}.nav-cta{display:inline-flex;align-items:center;gap:var(--space-sm);padding:var(--space-sm)var(--space-lg)!important;background:var(--color-primary)!important;color:#fff!important;border-radius:var(--radius-sm)!important;font-weight:600!important;font-size:.875rem!important}.nav-cta:hover{background:var(--color-primary-dark)!important;transform:translateY(-1px);box-shadow:var(--shadow-md)}.mobile-menu-btn{display:none;background:0 0;border:none;font-size:1.5rem;cursor:pointer;padding:var(--space-sm);color:var(--color-text);line-height:1}.mobile-nav{display:none;position:fixed;top:64px;left:0;right:0;bottom:0;background:var(--color-bg-card);z-index:999;padding:var(--space-lg);overflow-y:auto}.mobile-nav.active{display:block}.mobile-nav a{display:block;padding:var(--space-md)0;font-size:1.1rem;font-weight:500;color:var(--color-text);border-bottom:1px solid var(--color-border-light)}.mobile-nav .mobile-nav-section{margin-bottom:var(--space-lg)}.mobile-nav .mobile-nav-section-title{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--color-text-muted);margin-bottom:var(--space-sm);padding-top:var(--space-md)}.mobile-nav .mobile-nav-section a{font-size:1rem;padding:var(--space-sm)0 var(--space-sm)var(--space-md)}@media(max-width:768px){.main-nav{display:none}.mobile-menu-btn{display:block}}