/* 子テーマ: custom-overrides.css */
.site-header.scrolled {
  background-color: rgba(0, 0, 0, 0.8) !important;
  box-shadow: 0 2px 5px rgba(0,0,0,0.2);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}