.site-header{position:sticky;top:0;z-index:var(--z-sticky);background-color:var(--color-background);border-bottom:1px solid var(--color-border)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:var(--spacing-lg);height:5rem}.site-branding{flex-shrink:0}.site-logo{display:flex;flex-direction:column;align-items:center;text-decoration:none;line-height:1.2}.site-title-text{font-size:var(--font-size-lg);font-weight:var(--font-weight-semibold);letter-spacing:var(--letter-spacing-wider);color:var(--color-heading)}.site-title-accent{font-size:var(--font-size-lg);font-weight:var(--font-weight-normal);letter-spacing:var(--letter-spacing-wider);color:var(--color-heading)}.title-highlight{color:var(--color-primary)}.custom-logo-link{display:block}.custom-logo{max-height:4rem;width:auto}.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:2.5rem;height:2.5rem;padding:var(--spacing-sm);cursor:pointer;background:0 0}.hamburger-line{display:block;width:100%;height:2px;background-color:var(--color-heading);transition:transform var(--transition-base),opacity var(--transition-base)}.menu-toggle[aria-expanded=true] .hamburger-line:first-child{transform:translateY(7px) rotate(45deg)}.menu-toggle[aria-expanded=true] .hamburger-line:nth-child(2){opacity:0}.menu-toggle[aria-expanded=true] .hamburger-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.primary-navigation{display:none;position:absolute;top:100%;left:0;right:0;background-color:var(--color-background);border-bottom:1px solid var(--color-border);box-shadow:var(--shadow-md)}.primary-navigation.is-open{display:block}.nav-menu{display:flex;flex-direction:column;padding:var(--spacing-md) 0}.nav-menu>li{border-bottom:1px solid var(--color-border)}.nav-menu>li:last-child{border-bottom:none}.nav-menu a{display:block;padding:var(--spacing-md) var(--container-padding);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);color:var(--color-text);letter-spacing:var(--letter-spacing-wide);text-transform:uppercase;transition:color var(--transition-fast),background-color var(--transition-fast)}.nav-menu a:focus,.nav-menu a:hover{color:var(--color-primary);background-color:var(--color-background-alt)}.nav-menu .current-menu-item>a,.nav-menu .current_page_item>a{color:var(--color-primary)}.nav-menu .sub-menu{background-color:var(--color-background-alt)}.nav-menu .sub-menu a{padding-left:calc(var(--container-padding) + var(--spacing-lg));font-size:var(--font-size-xs)}