.site-header{--header-bar-height:88px;--header-logo-height:64px;backdrop-filter:saturate(1.4) blur(8px);background:var(--white-a92);border-bottom:1px solid transparent;position:sticky;top:0;transition:border-color .3s var(--ease),box-shadow .3s var(--ease);z-index:40}.site-header.scrolled{border-color:var(--line);box-shadow:var(--shadow-header)}.site-header .wrap{align-items:center;display:flex;gap:12px;height:var(--header-bar-height);justify-content:space-between}.site-header .lockup-img{height:var(--header-logo-height)}.site-header .btn{flex-shrink:0;font-size:15px;padding:11px 18px;white-space:nowrap}@media (max-width:640px){.site-header{--header-bar-height:72px;--header-logo-height:52px}.site-header .btn{font-size:14px;padding:9px 12px}}