header.site-header{box-sizing:border-box;width:100%;height:94px;max-width:none;margin:0;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:0 5%;background:#f5f4ed;border-bottom:1px solid #deded4;position:relative;z-index:30;font-family:Arial,'Noto Sans JP',sans-serif}header.site-header nav{display:flex;align-items:center;gap:18px;font-size:11px;letter-spacing:.04em}header.site-header nav>a{display:block;color:#2b3028;text-decoration:none;padding:10px 0;margin:0;border:0;border-bottom:2px solid transparent;white-space:nowrap;background:none;font-weight:400}header.site-header nav>a[aria-current="page"]{border-bottom-color:#2b3028}header.site-header .menu{display:none;border:0;background:none;padding:8px;font-size:23px;color:#2b3028;width:auto;min-width:0}.account-tools{padding:12px 5%;display:flex;justify-content:flex-end;gap:20px;font-size:12px}@media(max-width:1100px){header.site-header{padding:0 3%;gap:15px}header.site-header nav{gap:12px;font-size:10px}}@media(max-width:900px){header.site-header{height:76px;padding:0 6%}header.site-header .menu{display:block}header.site-header nav{display:none;position:absolute;top:76px;left:0;right:0;background:#f5f4ed;padding:20px 6%;border-bottom:1px solid #deded4}header.site-header nav.open{display:flex;align-items:stretch;flex-direction:column;gap:8px;font-size:13px}header.site-header nav>a{padding:12px 0}}

/* Keep the shared navigation visible throughout every page. */
:root{--site-header-height:94px}
body:has(>header.site-header){padding-top:var(--site-header-height)}
header.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--site-header-height)}
html{scroll-padding-top:calc(var(--site-header-height) + 16px)}
@media(max-width:900px){
 :root{--site-header-height:76px}
 header.site-header nav{top:100%;max-height:calc(100dvh - var(--site-header-height));overflow-y:auto;box-sizing:border-box}
}
@media print{
 body:has(>header.site-header){padding-top:0}
 header.site-header{position:static!important}
}

/* Stronger navigation contrast with slightly more breathing room. */
header.site-header nav>a{color:#203b2b;font-weight:600}
header.site-header nav{gap:22px}
@media(max-width:1100px){header.site-header nav{gap:16px}}
@media(max-width:900px){header.site-header nav.open{gap:10px}}