.top-header{--engco-header-width:min(calc(100% - clamp(24px,10vw,170px)),var(--engco-wide-max,1880px));position:fixed;top:clamp(8px,0.85vw,16px);left:50%;right:auto;z-index:1000;width:var(--engco-header-width);margin:0;transform:translateX(-50%);font-family:var(--engco-font,"Inter","Helvetica Neue",Arial,sans-serif);background:rgba(57,62,64,0.86);border:1px solid rgba(255,255,255,0.12);border-radius:12px;box-shadow:0 14px 36px rgba(2,8,23,0.28),inset 0 1px 0 rgba(255,255,255,0.08);backdrop-filter:blur(18px) saturate(150%);-webkit-backdrop-filter:blur(18px) saturate(150%);overflow:visible;transition:background-color 180ms ease,box-shadow 180ms ease,border-color 180ms ease}