.hk-stack-cards {
	--hk-stack-intro-w: 44.5%;
	--hk-stack-top: 130px;
	--hk-stack-step: 28px;
	--hk-stack-media: 198px;

	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 64px;
}

.hk-stack-cards__intro {
	flex: 0 0 var(--hk-stack-intro-w);
	min-width: 0;
	align-self: stretch;
}

.hk-stack-cards.is-sticky .hk-stack-cards__intro-inner {
	position: sticky;
	top: var(--hk-stack-top);
}

.hk-stack-cards__title {
	margin: 0;
	color: var(--hk-ink);
	font-family: var(--hk-font);
	font-size: clamp(30px, 2.8vw, 40px);
	font-weight: 600;
	line-height: 1.375;
	letter-spacing: -.02em;
}

.hk-stack-cards__desc {
	margin-top: 54px;
	color: var(--hk-ink);
	font-size: 18px;
	font-weight: 400;
	line-height: 1.55;
	letter-spacing: -.01em;
	text-align: justify;
}

.hk-stack-cards__list {
	display: flex;
	flex: 1 1 0;
	flex-direction: column;
	gap: 37px;
	min-width: 0;
	max-width: 682px;
}

.hk-stack-cards__card {
	position: relative;
	padding: 38px 39px 35px 32px;
	border: 2px solid var(--hk-amber);
	border-radius: 30px;
	background: var(--hk-white);
}

.hk-stack-cards.is-sticky .hk-stack-cards__card {
	position: sticky;
	transform-origin: center top;
	transition: transform .4s var(--hk-ease), box-shadow .4s var(--hk-ease);
	top: calc(var(--hk-stack-top) + var(--hk-stack-i, 0) * var(--hk-stack-step));
	box-shadow: 0 -6px 24px rgba(102, 50, 14, .04);
}

.hk-stack-cards__card-title {
	margin: 0 0 40px;
	color: var(--hk-ink);
	font-family: var(--hk-font);
	font-size: 22px;
	font-weight: 700;
	line-height: 1.36;
}

.hk-stack-cards__card-body {
	display: flex;
	align-items: center;
	gap: 36px;
}

.hk-stack-cards__media {
	display: flex;
	align-items: center;
	justify-content: center;
	flex: 0 0 var(--hk-stack-media);
	width: var(--hk-stack-media);
	aspect-ratio: 1;
}

.hk-stack-cards__media img,
.hk-stack-cards__media .hk-anim {
	width: 100%;
	height: auto;
	max-height: 100%;
	object-fit: contain;
}

.hk-stack-cards__media .hk-anim {
	--hk-anim-w: 100%;
}

.hk-stack-cards__card-content {
	flex: 1 1 0;
	min-width: 0;
	color: #000;
	font-size: 16px;
	font-weight: 400;
	line-height: 1.5;
}

.hk-stack-cards__card-content p {
	margin-bottom: .55em;
}

.hk-stack-cards__card-content ul,
.hk-stack-cards__card-content ol {
	margin: 0;
	padding-left: 1.2em;
}

.hk-stack-cards__card-content li {
	margin-bottom: .2em;
}

@media (max-width: 1024px) {
	.hk-stack-cards {
		--hk-stack-media: 150px;

		gap: 36px;
	}

	.hk-stack-cards__desc {
		margin-top: 28px;
		font-size: 16px;
	}

	.hk-stack-cards__card {
		padding: 28px 24px;
	}

	.hk-stack-cards__card-title {
		margin-bottom: 24px;
		font-size: 20px;
	}

	.hk-stack-cards__card-body {
		gap: 24px;
	}
}

@media (max-width: 880px) {
	.hk-stack-cards {
		flex-direction: column;
		align-items: stretch;
	}

	.hk-stack-cards__intro {
		flex-basis: auto;
	}

	.hk-stack-cards.is-sticky .hk-stack-cards__intro-inner {
		position: static;
	}

	.hk-stack-cards__list {
		max-width: none;
	}
}

@media (max-width: 767px) {
	.hk-stack-cards {
		--hk-stack-media: 120px;
	}

	.hk-stack-cards {
		--hk-stack-top: 90px;
		--hk-stack-step: 14px;
	}

	.hk-stack-cards__list {
		gap: 20px;
	}

	.hk-stack-cards__card {
		padding: 24px 20px;
		border-radius: 24px;
	}

	.hk-stack-cards__card-body {
		flex-direction: column;
		align-items: flex-start;
		gap: 16px;
	}

	.hk-stack-cards__media {
		flex-basis: auto;
	}
}

/* Thẻ cao hơn màn hình: bỏ dính (script.js gắn .no-stick) */
.hk-stack-cards.is-sticky .hk-stack-cards__card.no-stick {
	position: relative;
	top: auto;
}

/* Thẻ đã bị thẻ sau phủ lên: thu nhỏ nhẹ tạo chiều sâu */
.hk-stack-cards.is-sticky .hk-stack-cards__card.is-covered {
	transform: scale(.965);
	box-shadow: 0 -10px 30px rgba(102, 50, 14, .06);
}

@media (prefers-reduced-motion: reduce) {
	.hk-stack-cards.is-sticky .hk-stack-cards__card {
		transition: none;
	}
}