Sticky 72px header of the Sivali Corp site in its two states: **glass** over the dark animated hero (`rgba(18,18,18,.28)`, 12px blur, white text) and **solid** once the page scrolls (`rgba(255,255,255,.92)`, `#E5E5E5` rule). Hovering a nav item with children opens the mega menu below it.

Anatomy: lockup (mark 36px + `SIVALI CORP`, tracked 0.18em) · nav items 15px with 14px side padding, active item in `#39399B` with a 2px inset underline · EN/ID segmented pill · primary button "Find Partners" (`#39399B`, hover `#393987`, radius 10px).

Mega menu: white panel, 260px intro column (title 20px Medium, 14px description, indigo link with arrow) divided by a `#E5E5E5` rule from a two-column grid of link cards (title 15px Medium + 13px description, `#F5F5F5` on hover, optional 40px logo tile).

On the hero the logo in the header is hidden while the hero lockup animates up into its place (scroll range `min(20% of hero, 160px)`), then the header logo appears. Below 820px the nav collapses to a 44px menu button.