/**
 * #page_header .design_header — Canvas ノイズ + 白グラデーション
 */

#page_header .design_header {
	position: relative;
	overflow: hidden;
	isolation: isolate;
	background-color: transparent !important;
}

#page_header .design_header .ideage-design-header-noise {
	position: absolute;
	inset: 0;
	z-index: 0;
	overflow: hidden;
	pointer-events: none;
	background-color: #f4f4f4;
}

#page_header .design_header .ideage-design-header-noise__canvas {
	display: block;
	width: 100%;
	height: 100%;
}

#page_header .design_header .ideage-design-header-noise__gradient {
	position: absolute;
	inset: 0;
	z-index: 1;
	background: linear-gradient(
		to bottom,
		#ffffff 0%,
		rgba(255, 255, 255, 0.65) 45%,
		rgba(255, 255, 255, 0) 100%
	);
	pointer-events: none;
}

#page_header .design_header .page-header-motifs {
	z-index: 2;
}

#page_header .design_header .title_area,
#page_header .design_header .desc_area {
	position: relative;
	z-index: 3;
}

/* TOP Hero — 同一 Canvas ノイズ + 上下透明・中央白グラデーション */
.ideage-top-hero {
	isolation: isolate;
}

.ideage-top-hero .ideage-design-header-noise {
	position: absolute;
	inset: 0;
	z-index: 0;
	overflow: hidden;
	pointer-events: none;
	background-color: #f4f4f4;
}

.ideage-top-hero .ideage-design-header-noise__canvas {
	display: block;
	width: 100%;
	height: 100%;
}

.ideage-top-hero .ideage-design-header-noise__gradient {
	position: absolute;
	inset: 0;
	z-index: 1;
	background: linear-gradient(
		to bottom,
		rgba(255, 255, 255, 0) 0%,
		#ffffff 50%,
		rgba(255, 255, 255, 0) 100%
	);
	pointer-events: none;
}