/* ==========================================================================
   CASE STUDY DETAIL PAGE STYLESHEET (Enterprise B2B Portfolio Layout)
   Theme: SEO Center Theme
   Vibe: Minimal, Enterprise, High White-space, Premium Eco-Tech
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. RESET & BASE TOKENS FOR CASE STUDY DETAIL
   -------------------------------------------------------------------------- */
.csd-main-wrapper {
	background-color: var(--color-bg-main, #ffffff);
	color: var(--color-text-main, #1d2b1a);
	font-family: var(--font-family, 'Inter', system-ui, -apple-system, sans-serif);
	overflow-x: hidden;
}

/* --------------------------------------------------------------------------
   2. BREADCRUMBS & BADGES
   -------------------------------------------------------------------------- */
.csd-breadcrumbs {
	margin-bottom: 1.5rem;
}

.csd-bottom-breadcrumbs {
	padding: 2.5rem 0;
	background-color: var(--color-bg-light, #f9fcf8);
	border-top: 1px solid var(--color-border, #e6ede4);
	margin-bottom: 0;
}

.csd-bottom-breadcrumbs .csd-breadcrumb-list {
	justify-content: center;
	text-align: center;
}

.csd-breadcrumb-list {
	display: flex;
	flex-wrap: wrap;
	align-items: center;
	gap: 0.5rem;
	list-style: none;
	padding: 0;
	margin: 0;
	font-size: 0.875rem;
	color: var(--color-text-muted, #52634f);
}

.csd-breadcrumb-item a {
	color: var(--color-text-muted, #52634f);
	text-decoration: none;
	transition: color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.csd-breadcrumb-item a:hover {
	color: var(--color-primary, #58BA40);
}

.csd-breadcrumb-item::after {
	content: "/";
	margin-left: 0.5rem;
	opacity: 0.5;
}

.csd-breadcrumb-item:last-child::after {
	content: "";
}

.csd-breadcrumb-item.active span {
	color: var(--color-primary, #58BA40);
	font-weight: 600;
}

.csd-badge-pill {
	display: inline-block;
	background: var(--gradient-brand, linear-gradient(135deg, #2ea121 0%, #58BA40 60%, #76d35d 100%));
	color: #ffffff;
	font-size: 0.8125rem;
	font-weight: 700;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	padding: 0.375rem 1rem;
	border-radius: var(--border-radius-pill, 9999px);
	box-shadow: 0 4px 15px rgba(88, 186, 64, 0.2);
	margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   3. SECTION 1: HERO & QUICK SUMMARY BAR
   -------------------------------------------------------------------------- */
.csd-hero-section {
	padding-top: 3.5rem;
	padding-bottom: 4rem;
	background: linear-gradient(180deg, var(--color-bg-light, #f9fcf8) 0%, #ffffff 100%);
}

.csd-hero-header {
	max-width: 900px;
	margin: 0 auto 3rem auto;
	text-align: center;
}

.csd-hero-title {
	font-size: 2.75rem;
	font-weight: var(--font-weight-headline-max, 750);
	line-height: 1.2;
	color: var(--color-text-main, #1d2b1a);
	margin-bottom: 1rem;
	letter-spacing: -0.02em;
}

.csd-hero-subtitle {
	font-size: 1.375rem;
	font-weight: 600;
	color: var(--color-primary, #58BA40);
	margin-bottom: 1rem;
	line-height: 1.4;
}

.csd-hero-desc {
	font-size: 1.125rem;
	color: var(--color-text-muted, #52634f);
	line-height: 1.6;
	margin-bottom: 2rem;
}

.csd-hero-actions {
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 1rem;
	flex-wrap: wrap;
}

/* Hero Media Box */
.csd-hero-media {
	margin: 0 0 3.5rem 0;
	border-radius: var(--border-radius-lg, 10px);
	overflow: hidden;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	border: 1px solid var(--color-border, #e6ede4);
}

.csd-hero-img {
	width: 100%;
	height: auto;
	max-height: 580px;
	object-fit: cover;
	display: block;
}

/* Quick Summary Bar (4 Columns Grid) */
.csd-summary-bar {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 1.25rem;
}

.csd-summary-card {
	background-color: var(--color-bg-main, #ffffff);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 1.25rem 1rem;
	text-align: center;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-summary-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
	border-color: var(--color-primary-pastel, #e2f4dd);
}

.csd-summary-label {
	display: block;
	font-size: 0.8125rem;
	color: var(--color-text-muted, #52634f);
	text-transform: uppercase;
	letter-spacing: 0.05em;
	margin-bottom: 0.375rem;
	font-weight: 500;
}

.csd-summary-val {
	display: block;
	font-size: 1.0625rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	line-height: 1.3;
}

/* --------------------------------------------------------------------------
   4. GENERAL SECTION HEADERS
   -------------------------------------------------------------------------- */
.csd-section-header {
	max-width: 800px;
	margin: 0 auto 3.5rem auto;
	text-align: center;
}

.csd-section-subtitle {
	display: inline-block;
	font-size: 0.8125rem;
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--color-primary, #58BA40);
	margin-bottom: 0.5rem;
}

.csd-section-title {
	font-size: 2.25rem;
	font-weight: var(--font-weight-headline-max, 750);
	color: var(--color-text-main, #1d2b1a);
	line-height: 1.25;
	margin: 0;
}

/* --------------------------------------------------------------------------
   5. SECTION 2: HIỆN TRẠNG BAN ĐẦU (INITIAL STATE)
   -------------------------------------------------------------------------- */
.csd-initial-section {
	background-color: var(--color-bg-main, #ffffff);
}

.csd-initial-grid {
	display: grid;
	grid-template-columns: 1.2fr 0.8fr;
	gap: 3rem;
	align-items: start;
}

.csd-story-title {
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	margin-bottom: 1rem;
}

.csd-story-text {
	font-size: 1.0625rem;
	line-height: 1.7;
	color: var(--color-text-muted, #52634f);
	margin-bottom: 2rem;
}

.csd-pain-heading {
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	margin-bottom: 1.25rem;
}

.csd-pain-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 1.25rem;
}

.csd-pain-card {
	display: flex;
	align-items: flex-start;
	gap: 0.875rem;
	background-color: var(--color-bg-light, #f9fcf8);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 1.25rem;
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-pain-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
}

.csd-pain-icon {
	flex-shrink: 0;
	color: #d97706;
	background: #fef3c7;
	padding: 0.375rem;
	border-radius: var(--border-radius-sm, 4px);
	display: flex;
	align-items: center;
	justify-content: center;
}

.csd-pain-title {
	font-size: 0.9375rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	margin: 0 0 0.25rem 0;
}

.csd-pain-desc {
	font-size: 0.8125rem;
	color: var(--color-text-muted, #52634f);
	margin: 0;
	line-height: 1.4;
}

.csd-initial-media {
	position: sticky;
	top: 100px;
	align-self: start;
}

.csd-media-card {
	margin: 0;
	border-radius: var(--border-radius-lg, 10px);
	overflow: hidden;
	border: 1px solid var(--color-border, #e6ede4);
	background: var(--color-bg-light, #f9fcf8);
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
}

.csd-media-img {
	width: 100%;
	height: auto;
	display: block;
	object-fit: cover;
}

.csd-media-caption {
	padding: 0.875rem 1rem;
	font-size: 0.8125rem;
	color: var(--color-text-muted, #52634f);
	text-align: center;
	border-top: 1px solid var(--color-border, #e6ede4);
	background: #ffffff;
}

/* --------------------------------------------------------------------------
   6. SECTION 3: MỤC TIÊU DỰ ÁN (KPIS)
   -------------------------------------------------------------------------- */
.csd-kpi-section {
	background: linear-gradient(180deg, var(--color-bg-light, #f9fcf8) 0%, #ffffff 100%);
}

.csd-kpi-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 1.5rem;
}

.csd-kpi-card {
	background-color: var(--color-bg-main, #ffffff);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 2rem 1.5rem;
	text-align: center;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-kpi-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
	border-color: var(--color-primary-pastel, #e2f4dd);
}

.csd-kpi-val {
	display: block;
	font-size: 2.5rem;
	font-weight: var(--font-weight-headline-max, 750);
	color: var(--color-primary, #58BA40);
	line-height: 1.1;
	margin-bottom: 0.25rem;
}

.csd-kpi-unit {
	display: block;
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--color-text-main, #1d2b1a);
	margin-bottom: 0.75rem;
}

.csd-kpi-label {
	font-size: 0.9375rem;
	font-weight: 500;
	color: var(--color-text-muted, #52634f);
	margin: 0;
}

/* --------------------------------------------------------------------------
   7. SECTION 4: PHƯƠNG PHÁP TRIỂN KHAI (6 PILLARS WITH IMAGES)
   -------------------------------------------------------------------------- */
.csd-pillars-section {
	background-color: var(--color-bg-main, #ffffff);
}

.csd-pillars-list {
	display: flex;
	flex-direction: column;
	gap: 2.5rem;
}

.csd-pillar-card {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 2.5rem;
	align-items: center;
	background-color: var(--color-bg-light, #f9fcf8);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 2.5rem;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-pillar-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
	border-color: var(--color-primary, #58BA40);
}

/* Alternating visual layout for even cards */
.csd-pillar-card:nth-child(even) {
	grid-template-columns: 1fr 1fr;
}

.csd-pillar-card:nth-child(even) .csd-pillar-content {
	order: 2;
}

.csd-pillar-card:nth-child(even) .csd-pillar-media {
	order: 1;
}

.csd-pillar-tag {
	display: inline-block;
	font-size: 0.75rem;
	font-weight: 700;
	letter-spacing: 0.06em;
	color: var(--color-primary, #58BA40);
	background: var(--color-primary-pastel, #e2f4dd);
	padding: 0.3125rem 0.75rem;
	border-radius: var(--border-radius-pill, 9999px);
	margin-bottom: 0.75rem;
	text-transform: uppercase;
}

.csd-pillar-title {
	font-size: 1.625rem;
	font-weight: var(--font-weight-headline-max, 750);
	color: var(--color-text-main, #1d2b1a);
	margin: 0 0 0.875rem 0;
	line-height: 1.3;
}

.csd-pillar-desc {
	font-size: 1rem;
	color: var(--color-text-muted, #52634f);
	line-height: 1.6;
	margin-bottom: 1.25rem;
}

.csd-pillar-checklist {
	list-style: none;
	padding: 0;
	margin: 0;
	display: flex;
	flex-direction: column;
	gap: 0.75rem;
}

.csd-pillar-item {
	display: flex;
	align-items: flex-start;
	gap: 0.625rem;
	font-size: 0.9375rem;
	font-weight: 500;
	color: var(--color-text-main, #1d2b1a);
	line-height: 1.5;
}

.csd-pillar-media {
	margin: 0;
	border-radius: var(--border-radius-lg, 10px);
	overflow: hidden;
	border: 1px solid var(--color-border, #e6ede4);
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	background: #ffffff;
}

.csd-pillar-img {
	width: 100%;
	aspect-ratio: 4 / 3;
	height: auto;
	object-fit: cover;
	display: block;
}

/* --------------------------------------------------------------------------
   8. SECTION 5: LỘ TRÌNH TRIỂN KHAI (TIMELINE)
   -------------------------------------------------------------------------- */
.csd-timeline-section {
	background: linear-gradient(180deg, var(--color-bg-light, #f9fcf8) 0%, #ffffff 100%);
}

.csd-timeline-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 1.5rem;
	position: relative;
}

.csd-timeline-card {
	background-color: var(--color-bg-main, #ffffff);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 1.75rem 1.25rem;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-timeline-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
}

.csd-timeline-badge {
	font-size: 0.8125rem;
	font-weight: 700;
	color: var(--color-primary, #58BA40);
	margin-bottom: 0.75rem;
}

.csd-timeline-progress-bar {
	height: 6px;
	background: var(--color-border, #e6ede4);
	border-radius: var(--border-radius-pill, 9999px);
	overflow: hidden;
	margin-bottom: 1.25rem;
}

.csd-timeline-progress-fill {
	height: 100%;
	background: var(--gradient-brand, linear-gradient(135deg, #2ea121 0%, #58BA40 60%, #76d35d 100%));
	border-radius: var(--border-radius-pill, 9999px);
}

.csd-timeline-title {
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	margin: 0 0 0.5rem 0;
}

.csd-timeline-desc {
	font-size: 0.875rem;
	color: var(--color-text-muted, #52634f);
	margin: 0;
	line-height: 1.5;
}

/* --------------------------------------------------------------------------
   9. SECTION 6: KẾT QUẢ ĐẠT ĐƯỢC (RESULTS DASHBOARD - FIXED HEADER UI)
   -------------------------------------------------------------------------- */
.csd-results-section {
	background-color: var(--color-primary-light, rgba(88, 186, 64, 0.05));
	border-top: 1px solid var(--color-border, #e6ede4);
	border-bottom: 1px solid var(--color-border, #e6ede4);
}

.csd-metrics-dashboard {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 1.5rem;
}

.csd-metric-card {
	background-color: var(--color-bg-main, #ffffff);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 1.75rem 1.5rem;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-metric-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
}

.csd-metric-header {
	margin-bottom: 1.25rem;
}

.csd-metric-top-row {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.625rem;
	width: 100%;
}

.csd-metric-name {
	font-size: 1.0625rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	line-height: 1.35;
	margin: 0;
	width: 100%;
	min-height: 2.7em;
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.csd-metric-pct {
	display: inline-block;
	font-size: 0.75rem;
	font-weight: 600;
	color: #ffffff;
	background: var(--gradient-brand, linear-gradient(135deg, #2ea121 0%, #58BA40 60%, #76d35d 100%));
	padding: 0.35rem 0.75rem;
	border-radius: var(--border-radius-pill, 9999px);
	white-space: nowrap;
	max-width: 100%;
	overflow: hidden;
	text-overflow: ellipsis;
	line-height: 1.2;
}

.csd-metric-compare {
	display: flex;
	align-items: baseline;
	gap: 0.625rem;
	flex-wrap: wrap;
}

.csd-val-old {
	font-size: 1.25rem;
	color: var(--color-text-muted, #52634f);
	text-decoration: line-through;
	opacity: 0.75;
}

.csd-val-arrow {
	font-size: 1.25rem;
	color: var(--color-primary, #58BA40);
	font-weight: 700;
}

.csd-val-new {
	font-size: 2.25rem;
	font-weight: var(--font-weight-headline-max, 750);
	color: var(--color-primary, #58BA40);
	line-height: 1;
}

/* --------------------------------------------------------------------------
   10. SECTION 7: BIỂU ĐỒ & BẰNG CHỨNG THỰC TẾ (PROOFS)
   -------------------------------------------------------------------------- */
.csd-proof-section {
	background-color: var(--color-bg-main, #ffffff);
}

.csd-proof-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 2rem;
}

.csd-proof-card {
	margin: 0;
	background-color: var(--color-bg-light, #f9fcf8);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	overflow: hidden;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
}

.csd-proof-img {
	width: 100%;
	height: auto;
	display: block;
	object-fit: cover;
}

.csd-proof-caption {
	padding: 1.5rem;
	background-color: #ffffff;
	border-top: 1px solid var(--color-border, #e6ede4);
}

.csd-proof-title {
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
	margin: 0 0 0.5rem 0;
}

.csd-proof-desc {
	font-size: 0.875rem;
	color: var(--color-text-muted, #52634f);
	margin: 0;
	line-height: 1.5;
}

/* --------------------------------------------------------------------------
   11. SECTION 8: GALLERY HÌNH ÁNH THỰC TẾ
   -------------------------------------------------------------------------- */
.csd-gallery-section {
	background: linear-gradient(180deg, var(--color-bg-light, #f9fcf8) 0%, #ffffff 100%);
}

.csd-gallery-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1.5rem;
}

.csd-gallery-item {
	margin: 0;
	background-color: #ffffff;
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	overflow: hidden;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-gallery-item:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
}

.csd-gallery-img {
	width: 100%;
	height: 240px;
	object-fit: cover;
	display: block;
}

.csd-gallery-caption {
	padding: 1rem;
	font-size: 0.875rem;
	font-weight: 600;
	color: var(--color-text-main, #1d2b1a);
	text-align: center;
	border-top: 1px solid var(--color-border, #e6ede4);
}

/* Visual Magnifier Zoom Button & Overlay Rules */
.csd-zoom-btn {
	position: relative;
	width: 100%;
	display: block;
	padding: 0;
	margin: 0;
	border: none;
	background: none;
	cursor: pointer;
	text-align: left;
	overflow: hidden;
}

.csd-zoom-overlay {
	position: absolute;
	inset: 0;
	background: rgba(11, 17, 8, 0.4);
	backdrop-filter: blur(2px);
	display: flex;
	align-items: center;
	justify-content: center;
	opacity: 0;
	transition: opacity 0.3s ease;
}

.csd-zoom-btn:hover .csd-zoom-overlay,
.csd-zoom-btn:focus-visible .csd-zoom-overlay {
	opacity: 1;
}

.csd-zoom-icon {
	width: 48px;
	height: 48px;
	background: var(--color-primary, #58BA40);
	color: #ffffff;
	border-radius: var(--border-radius-pill, 9999px);
	display: flex;
	align-items: center;
	justify-content: center;
	box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
	transform: scale(0.8);
	transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.csd-zoom-btn:hover .csd-zoom-icon {
	transform: scale(1);
}

/* --------------------------------------------------------------------------
   12. SECTION 9: KHÁCH HÀNG NÓI GÌ (TESTIMONIAL)
   -------------------------------------------------------------------------- */
.csd-review-section {
	background-color: var(--color-bg-main, #ffffff);
}

.csd-review-card {
	max-width: 900px;
	margin: 0 auto;
	background-color: var(--color-bg-light, #f9fcf8);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 3.5rem 3rem;
	text-align: center;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
}

/* Testimonial inside Hero Section */
.csd-hero-review-wrapper {
	max-width: 850px;
	margin: 0 auto 3.5rem auto;
}

.csd-hero-review-wrapper .csd-review-card {
	padding: 2.5rem 2rem;
	background-color: var(--color-bg-light, #f9fcf8);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
}

.csd-review-stars {
	color: #f59e0b;
	display: flex;
	justify-content: center;
	gap: 0.25rem;
	margin-bottom: 1.5rem;
}

.csd-review-quote {
	font-size: 1.25rem;
	line-height: 1.7;
	font-weight: 500;
	color: var(--color-text-main, #1d2b1a);
	margin: 0 0 2rem 0;
	font-style: italic;
}

.csd-review-author {
	display: flex;
	align-items: center;
	justify-content: center;
	gap: 1rem;
}

.csd-author-avatar {
	width: 64px;
	height: 64px;
	border-radius: var(--border-radius-pill, 9999px);
	object-fit: cover;
	border: 2px solid var(--color-primary, #58BA40);
}

.csd-author-info {
	text-align: left;
}

.csd-author-name {
	display: block;
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
}

.csd-author-role {
	display: block;
	font-size: 0.875rem;
	color: var(--color-text-muted, #52634f);
}

/* --------------------------------------------------------------------------
   13. SECTION 10: THÔNG SỐ KỸ THUẬT DỰ ÁN (SPECS GRID)
   -------------------------------------------------------------------------- */
.csd-specs-section {
	background: linear-gradient(180deg, var(--color-bg-light, #f9fcf8) 0%, #ffffff 100%);
}

.csd-specs-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1.5rem;
}

.csd-spec-card {
	background-color: var(--color-bg-main, #ffffff);
	border: 1px solid var(--color-border, #e6ede4);
	border-radius: var(--border-radius-lg, 10px);
	padding: 1.5rem;
	box-shadow: var(--shadow-subtle, 0 4px 20px rgba(0, 0, 0, 0.008));
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1);
	will-change: transform, opacity;
}

.csd-spec-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--shadow-hover, 0 8px 30px rgba(88, 186, 64, 0.008));
}

.csd-spec-label {
	display: block;
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--color-text-muted, #52634f);
	text-transform: uppercase;
	margin-bottom: 0.5rem;
}

.csd-spec-val {
	display: block;
	font-size: 1.125rem;
	font-weight: 700;
	color: var(--color-text-main, #1d2b1a);
}

/* --------------------------------------------------------------------------
   15. LIGHTBOX MODAL STYLES
   -------------------------------------------------------------------------- */
.csd-lightbox-modal {
	position: fixed;
	inset: 0;
	z-index: 99999;
	display: flex;
	align-items: center;
	justify-content: center;
}

.csd-lightbox-backdrop {
	position: absolute;
	inset: 0;
	background: rgba(11, 17, 8, 0.85);
	backdrop-filter: blur(8px);
}

.csd-lightbox-dialog {
	position: relative;
	z-index: 2;
	max-width: 90vw;
	max-height: 90vh;
	display: flex;
	flex-direction: column;
	align-items: center;
}

.csd-lightbox-close {
	position: absolute;
	top: -40px;
	right: 0;
	background: none;
	border: none;
	color: #ffffff;
	font-size: 2.5rem;
	cursor: pointer;
	line-height: 1;
}

.csd-lightbox-prev,
.csd-lightbox-next {
	position: absolute;
	top: 50%;
	transform: translateY(-50%);
	background: rgba(255, 255, 255, 0.2);
	color: #ffffff;
	border: none;
	width: 48px;
	height: 48px;
	border-radius: var(--border-radius-pill, 9999px);
	font-size: 1.5rem;
	cursor: pointer;
	display: flex;
	align-items: center;
	justify-content: center;
	transition: background 0.3s ease;
}

.csd-lightbox-prev:hover,
.csd-lightbox-next:hover {
	background: var(--color-primary, #58BA40);
}

.csd-lightbox-prev { left: -60px; }
.csd-lightbox-next { right: -60px; }

.csd-lightbox-content {
	margin: 0;
	text-align: center;
}

.csd-lightbox-img {
	max-width: 85vw;
	max-height: 75vh;
	object-fit: contain;
	border-radius: var(--border-radius-lg, 10px);
	box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
}

.csd-lightbox-caption {
	margin-top: 1rem;
	color: #ffffff;
	font-size: 1rem;
	font-weight: 500;
}

/* --------------------------------------------------------------------------
   16. RESPONSIVE BREAKPOINTS & DYNAMIC ODD-STRETCH GRID RULES
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
	.csd-hero-title { font-size: 2.25rem; }
	.csd-summary-bar { grid-template-columns: repeat(2, 1fr); }
	.csd-initial-grid { grid-template-columns: 1fr; }
	.csd-kpi-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-pillar-card,
	.csd-pillar-card:nth-child(even) { grid-template-columns: 1fr; gap: 1.5rem; }
	.csd-pillar-card:nth-child(even) .csd-pillar-content { order: 1; }
	.csd-pillar-card:nth-child(even) .csd-pillar-media { order: 2; }
	.csd-timeline-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-metrics-dashboard { grid-template-columns: repeat(2, 1fr); }
	.csd-gallery-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-specs-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
	.csd-hero-title { font-size: 1.875rem; }
	.csd-hero-subtitle { font-size: 1.125rem; }
	.csd-section-title { font-size: 1.75rem; }
	.csd-summary-bar { grid-template-columns: repeat(2, 1fr); }
	.csd-pain-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-kpi-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-timeline-grid { grid-template-columns: 1fr; }
	.csd-metrics-dashboard { grid-template-columns: 1fr; }
	.csd-proof-grid { grid-template-columns: 1fr; }
	.csd-gallery-grid { grid-template-columns: 1fr; }
	.csd-specs-grid { grid-template-columns: repeat(2, 1fr); }
	.csd-review-card { padding: 2rem 1.25rem; }
	.csd-lightbox-prev { left: 10px; }
	.csd-lightbox-next { right: 10px; }

	/* DYNAMIC ODD-STRETCH GRID RULE FOR MOBILE */
	.grid-item:nth-child(odd):last-child {
		grid-column: span 2;
	}
}

@media (max-width: 480px) {
	.csd-summary-bar { grid-template-columns: 1fr; }
	.csd-specs-grid { grid-template-columns: 1fr; }
	.csd-pain-grid { grid-template-columns: 1fr; }
	.csd-kpi-grid { grid-template-columns: 1fr; }
	
	/* Reset grid span if container drops to 1 col */
	.grid-item:nth-child(odd):last-child {
		grid-column: span 1;
	}
}