.site-header,.site-header *{box-sizing:border-box}
.site-header{position:sticky;top:0;z-index:1100;width:100%;background:var(--surface);font:16px/1.5 var(--font-ui);color:var(--brand);transition:box-shadow var(--duration)}
.site-header.is-scrolled{box-shadow:0 1px 0 var(--border),0 6px 24px #1c184208}
.site-header a{color:inherit;text-decoration:none}
.header-main{max-width:1500px;margin:auto;min-height:100px;padding:10px 30px;display:flex;align-items:center;gap:20px}
.brand-lockup{display:flex;align-items:center;gap:16px;flex-shrink:0}.site-brand{display:block;flex-shrink:0}.site-brand img{display:block;width:100px;height:76px;object-fit:contain}
.manufacturer-signature{display:block;max-width:120px;border-left:1px solid var(--border);padding-left:13px;font:500 13px/1.45 var(--font-ui)}.manufacturer-signature small{display:block;margin-top:5px;font-size:11px;font-weight:400;color:var(--muted)}
.primary-navigation{display:flex;flex:1;justify-content:flex-end;gap:26px;align-items:center}.primary-navigation>a,.category-toggle{position:relative;padding:18px 0;white-space:nowrap;font-size:15px;font-weight:500}
.primary-navigation a:hover{color:var(--brand-dark)}
.primary-navigation>a:not([href$="/au/bk_23619187.html"])::before,.category-toggle::before{content:"";position:absolute;left:0;right:0;bottom:8px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--duration) var(--ease)}
.primary-navigation>a[aria-current]::before,.category-toggle[aria-current]::before,.primary-navigation>a:hover::before,.category-toggle:hover::before{transform:scaleX(1)}
.primary-navigation>a[aria-current],.category-toggle[aria-current]{text-decoration:none}
.primary-navigation>a[href="/au/bk_23619187.html"]{padding:13px 24px;color:white;background:var(--brand);border-radius:var(--radius-pill);text-decoration:none;transition:background var(--duration)}
.primary-navigation>a[href="/au/bk_23619187.html"]:hover{background:var(--brand-dark)}
.navigation-group{position:relative;display:flex;align-items:center;gap:4px}
.category-toggle{display:flex;align-items:center;gap:10px;min-height:48px;border:0;background:none;color:var(--brand);padding:12px 8px;cursor:pointer;font-family:inherit}
.category-toggle::after{content:"";width:8px;height:8px;flex:0 0 8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-2px) rotate(45deg);transition:transform var(--duration) var(--ease)}
.category-toggle[aria-expanded=true]::after{transform:translateY(2px) rotate(225deg)}
.category-toggle[aria-expanded=true]{color:var(--brand-dark)}
.category-menu{position:absolute;top:100%;left:-18px;width:350px;max-width:calc(100vw - 40px);padding:12px;background:var(--surface);border:0;box-shadow:var(--shadow-menu);border-radius:14px;animation:menu-enter var(--duration) var(--ease)}
.category-menu[hidden]{display:none}
.category-menu a{display:grid;grid-template-columns:minmax(0,1fr);align-items:center;gap:16px;min-height:48px;padding:14px 16px;margin:0;border:0;border-radius:8px;background:transparent;font:400 16px/1.45 var(--font-ui);color:var(--brand);transition:background var(--duration),color var(--duration)}

.category-menu a:hover,.category-menu a:focus-visible{background:var(--surface-soft);color:var(--brand)}
.category-menu a[aria-current=page]{background:var(--surface-soft);color:var(--brand);font-weight:500}
.header-search{display:flex;width:132px;min-height:40px;align-items:center;flex-shrink:0;margin-left:auto;padding-inline:12px;border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface-neutral)}
.header-search label{position:absolute;clip-path:inset(50%);width:1px;height:1px;overflow:hidden}
.header-search input{width:100%;min-width:0;border:0;background:transparent;padding:8px 0;font:15px var(--font-ui);color:var(--brand)}
.header-search button svg{display:block}.header-search button{border:0;padding:7px;background:none;color:var(--brand);cursor:pointer;font:19px var(--font-ui)}
.navigation-toggle{display:none}.site-header :focus-visible{outline:2px solid var(--brand);outline-offset:4px}
.site-header .header-search input:focus-visible{outline:none}
.header-search:focus-within{border-color:var(--brand)}
.header-skip{position:absolute;top:-100px;left:20px;background:white;padding:12px;z-index:2}.header-skip:focus{top:5px}
@keyframes menu-enter{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}
/* Match desktop link and disclosure heights so labels and underlines share a baseline. */
@media(min-width:1181px){.primary-navigation>a:not([href$="/au/bk_23619187.html"]),.category-toggle{display:inline-flex;align-items:center;height:56px;padding-block:0;line-height:1.5}}
@media(max-width:1350px){.header-main{gap:16px;padding-inline:24px}.primary-navigation{gap:12px}.primary-navigation>a,.category-toggle{font-size:14px}.header-search{width:116px}.manufacturer-signature{max-width:96px;font-size:12px}.primary-navigation>a[href="/au/bk_23619187.html"]{padding:12px 17px}}
@media(max-width:1180px){
 .header-main{flex-wrap:wrap;padding:8px 20px;min-height:84px;gap:12px}.brand-lockup{margin-right:auto}.site-brand img{width:95px;height:70px}
 .navigation-toggle{display:flex;align-items:center;gap:18px;background:white;border:1px solid var(--border);border-radius:var(--radius-pill);padding:10px 18px;color:var(--brand);font:15px var(--font-ui);cursor:pointer}
 .header-search{width:140px}.primary-navigation{order:5;flex:0 0 100%;display:flex;flex-direction:column;align-items:stretch;gap:0;padding:12px 0 18px}
 .site-header.navigation-ready .primary-navigation{display:none}.site-header.navigation-ready .primary-navigation.is-open{display:flex}
 .primary-navigation>a,.category-toggle{padding:12px 0;font-size:17px}.navigation-group{flex-wrap:wrap;justify-content:space-between}
 .category-menu{position:static;flex:0 0 100%;width:100%;max-width:none;box-shadow:none;margin-bottom:10px;background:var(--surface);border:1px solid var(--border)}
 .primary-navigation>a{border-bottom:1px solid var(--border)}.primary-navigation>a[href="/au/bk_23619187.html"]{text-align:center;margin-top:15px}
}
@media(max-width:580px){.header-main{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 10px}.brand-lockup{grid-column:1;grid-row:1 / 3;margin:0}.navigation-toggle{grid-column:2;grid-row:1;justify-self:end}.site-language{grid-column:2;grid-row:2;justify-self:end}.header-search{grid-column:1 / -1;grid-row:3}.primary-navigation{grid-column:1 / -1;grid-row:4}.header-search{width:105px}.header-main{gap:10px}.site-brand img{width:76px;height:60px}.manufacturer-signature{max-width:100px;font-size:10px;padding-left:10px}.manufacturer-signature small{font-size:9px}.brand-lockup{gap:6px}.navigation-toggle{padding:9px 13px;gap:10px}.header-search{order:6;width:100%;margin-top:0}.header-search input{padding:5px 0}.header-search button svg{display:block}.header-search button{padding:4px 7px}}
@media(prefers-reduced-motion:reduce){.site-header *{animation:none!important;transition:none!important}}

@media(max-width:1180px){.primary-navigation.is-open{max-height:calc(100dvh - 155px);overflow-y:auto;overscroll-behavior:contain}}