.header{position:fixed;top:0;left:0;right:0;background-color:var(--color-background);box-shadow:var(--box-shadow);z-index:1000;transition:transform var(--transition-speed) var(--transition-timing)}.nav{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-md) 0}.logo{display:flex;align-items:center;gap:var(--spacing-sm);font-size:2.9rem;font-weight:800;justify-content:center}.logo-image{height:60px;width:auto;object-fit:contain}.logo-text{white-space:nowrap;font-size:2.9rem}.nav-list{display:flex;list-style:none;gap:var(--spacing-lg)}.nav-list a{font-weight:500;color:var(--color-text);padding:var(--spacing-xs) var(--spacing-sm);border-radius:var(--border-radius);transition:background-color var(--transition-speed) var(--transition-timing)}.nav-list a:hover{background-color:var(--color-background-alt);color:var(--color-primary)}