/**
 * Header Layout: Sticky Slide Down
 *
 * Layout-specific styles for the Sticky Slide Down header (Ghost Header System).
 * Global header structural styles shared across all layouts live in style.css.
 * Add rules here that are exclusive to this layout variant.
 *
 * Loaded conditionally via celeste_enqueue_layout_assets() in functions.php —
 * only enqueued when this layout is the active header for the current page.
 *
 * @package Celeste_Theme
 * @since   2.2.0
 */