header,header.scrolled{transition:background-color .4s ease,box-shadow .4s ease,border-color .4s ease,color .3s ease;}
header.scrolled{background:rgba(242,245,249,.76);backdrop-filter:blur(12px) saturate(120%);-webkit-backdrop-filter:blur(12px) saturate(120%);border-bottom:1px solid rgba(214,224,236,.42);box-shadow:0 6px 22px rgba(24,53,85,.065)}
header.scrolled .header-search,header.scrolled #language{background:rgba(255,255,255,.3);border-color:rgba(154,174,198,.3)}
header.scrolled .brand-logo{background:transparent}
@media(max-width:760px){header,header.scrolled{background:rgba(242,245,249,.78);backdrop-filter:blur(12px) saturate(120%);-webkit-backdrop-filter:blur(12px) saturate(120%);box-shadow:0 5px 18px rgba(24,53,85,.06);border-bottom:1px solid rgba(214,224,236,.38)}header .header-search,header #language{background:rgba(255,255,255,.28);border-color:rgba(154,174,198,.32)}header nav.open,header.scrolled nav.open{background:rgba(246,248,251,.98)}}
@media(prefers-reduced-motion:reduce){header,header.scrolled{transition:none}}