/**
 * Section 10 — FR-4 vs Other PCB Materials
 * 设计基准 1280px | 4列对比表 CSS Grid 布局
 * FR-4 列：蓝色高亮(#d0e4ff)，宽301px，含悬浮顶部图片
 * 其余3列：灰色(#f5f5f5)，宽286px，顶部与 FR-4 列表头对齐
 */

/* ============================================================
   外层 section + inner
   ============================================================ */
.sparta-product-detail-comparison {
	background: #ffffff;
	padding: 80px 0 100px;
}

.sparta-product-detail-comparison__inner {
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 40px;
	box-sizing: border-box;
}

/* ============================================================
   标题区（居中）
   ============================================================ */
.sparta-product-detail-comparison__header {
	text-align: center;
	margin-bottom: 56px;
}

.sparta-product-detail-comparison__title {
	font-family: 'Anton', sans-serif;
	font-size: 48px;
	font-weight: 400;
	line-height: 1.2;
	color: #043580;
	margin: 0 0 24px;
}

.sparta-product-detail-comparison__desc {
	font-family: 'Montserrat', sans-serif;
	font-size: 16px;
	font-weight: 400;
	line-height: 1.6;
	color: #6a6969;
	max-width: 794px;
	margin: 0 auto;
}

/* ============================================================
   CSS Grid 对比表
   列宽比例 = 286 : 301 : 286 : 286（设计稿像素值转 fr）
   列间距 14px（设计稿 300-286=14）
   ============================================================ */
.sparta-product-detail-comparison__table {
	display: grid;
	grid-template-columns: 286fr 301fr 286fr 286fr;
	column-gap: 14px;
	max-width: 1201px;
	margin: 0 auto;
}

/* ============================================================
   图片行（行1）：仅 FR-4 列有内容；其余列透明占位
   ============================================================ */
.sparta-product-detail-comparison__img-cell {
	min-height: 182px;
}

.sparta-product-detail-comparison__img-cell--empty {
	background: transparent;
}

.sparta-product-detail-comparison__img-cell--fr4 {
	background: #d0e4ff;
	border-radius: 10px 10px 0 0;
	display: flex;
	align-items: flex-end;
	justify-content: center;
	padding: 16px 20px 0;
}

.sparta-product-detail-comparison__img-cell--fr4 img {
	width: 100%;
	max-width: 259px;
	height: 161px;
	object-fit: contain;
	display: block;
}

/* ============================================================
   表头行（行2）
   ============================================================ */
.sparta-product-detail-comparison__hdr {
	font-family: 'Montserrat', sans-serif;
	font-size: 24px;
	line-height: 25px;
	text-align: center;
	padding: 28px 16px;
}

.sparta-product-detail-comparison__hdr--normal {
	background: #f5f5f5;
	border-radius: 10px 10px 0 0;
	color: #6a6969;
	font-weight: 600;
}

.sparta-product-detail-comparison__hdr--fr4 {
	background: #d0e4ff;
	color: #043580;
	font-weight: 700;
	border-radius: 0;
}

/* ============================================================
   数据行（行3–9）
   ============================================================ */
.sparta-product-detail-comparison__cell {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
	padding: 18px 16px;
	text-align: center;
	border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.sparta-product-detail-comparison__cell--normal {
	background: #f5f5f5;
	color: #6a6969;
}

.sparta-product-detail-comparison__cell--fr4 {
	background: #d0e4ff;
	color: #043580;
}

.sparta-product-detail-comparison__cell--last {
	border-radius: 0 0 10px 10px;
}

.sparta-product-detail-comparison__cell-label {
	font-family: 'Montserrat', sans-serif;
	font-weight: 600;
	font-size: 16px;
	line-height: 20px;
	display: block;
}

.sparta-product-detail-comparison__cell-value {
	font-family: 'Montserrat', sans-serif;
	font-weight: 500;
	font-size: 14px;
	line-height: 20px;
	display: block;
}

/* ============================================================
   大屏 ≥1800px
   ============================================================ */
@media (min-width: 1800px) {
	.sparta-product-detail-comparison__inner {
		max-width: 1400px;
	}

	.sparta-product-detail-comparison__title {
		font-size: 54px;
	}

	.sparta-product-detail-comparison__hdr {
		font-size: 26px;
		padding: 32px 20px;
	}

	.sparta-product-detail-comparison__cell-label {
		font-size: 17px;
	}

	.sparta-product-detail-comparison__cell-value {
		font-size: 15px;
	}
}

/* ============================================================
   平板 768px–1279px
   ============================================================ */
@media (min-width: 768px) and (max-width: 1279px) {
	.sparta-product-detail-comparison {
		padding: 60px 0 80px;
	}

	.sparta-product-detail-comparison__inner {
		padding: 0 24px;
	}

	.sparta-product-detail-comparison__title {
		font-size: 36px;
	}

	.sparta-product-detail-comparison__table {
		column-gap: 10px;
	}

	.sparta-product-detail-comparison__img-cell {
		min-height: 140px;
	}

	.sparta-product-detail-comparison__img-cell--fr4 img {
		height: 120px;
	}

	.sparta-product-detail-comparison__hdr {
		font-size: 16px;
		padding: 18px 10px;
		line-height: 20px;
	}

	.sparta-product-detail-comparison__cell {
		padding: 14px 10px;
		gap: 6px;
	}

	.sparta-product-detail-comparison__cell-label {
		font-size: 13px;
		line-height: 17px;
	}

	.sparta-product-detail-comparison__cell-value {
		font-size: 12px;
	}
}

/* ============================================================
   手机 ≤767px：横向滚动
   ============================================================ */
@media (max-width: 767px) {
	.sparta-product-detail-comparison {
		padding: 48px 0 64px;
	}

	.sparta-product-detail-comparison__inner {
		padding: 0 16px;
		overflow-x: auto;
		-webkit-overflow-scrolling: touch;
	}

	.sparta-product-detail-comparison__title {
		font-size: 28px;
		margin-bottom: 16px;
	}

	.sparta-product-detail-comparison__table {
		grid-template-columns: 160px 180px 160px 160px;
		column-gap: 8px;
		min-width: 668px;
	}

	.sparta-product-detail-comparison__img-cell {
		min-height: 110px;
	}

	.sparta-product-detail-comparison__img-cell--fr4 img {
		height: 90px;
		max-width: 140px;
	}

	.sparta-product-detail-comparison__hdr {
		font-size: 13px;
		padding: 14px 8px;
		line-height: 18px;
	}

	.sparta-product-detail-comparison__cell {
		padding: 12px 8px;
		gap: 5px;
	}

	.sparta-product-detail-comparison__cell-label,
	.sparta-product-detail-comparison__cell-value {
		font-size: 11px;
		line-height: 15px;
	}
}