/* ==========================================================================
   Identity Design — Landing 21 Ngày
   CSS riêng cho page template này, không dùng chung với các template khác.
   ========================================================================== */

.id21 {
	--blue: #1432ff;
	--blue-dark: #071bb5;
	--green: #35d12f;
	--navy: #070915;
	--ink: #101116;
	--muted: #5f6270;
	--line: #dfe1e8;
	--panel: #f4f5f8;
	--gold: #ffb800;

	margin: 0;
	font-family: "Be Vietnam Pro", Montserrat, Arial, sans-serif;
	font-size: 18px;
	line-height: 1.55;
	color: var(--ink);
	background: #fff;
	-webkit-font-smoothing: antialiased;
}

.id21 * {
	box-sizing: border-box;
}

.id21 .id21-inner {
	max-width: 860px;
	margin: 0 auto;
	padding: 0 24px;
}

.id21 h1,
.id21 h2,
.id21 h3 {
	font-weight: 800;
	letter-spacing: -0.02em;
	margin: 0 0 16px;
}

.id21 s {
	opacity: 0.65;
}

/* Topbar */
.id21-topbar {
	background: var(--navy);
	color: #fff;
	padding: 14px 0;
	font-size: 14px;
	position: sticky;
	top: 0;
	z-index: 20;
}
.id21-topbar-row {
	display: flex;
	align-items: center;
	justify-content: space-between;
}
.id21-topbar a {
	color: #cfd3ff;
	text-decoration: none;
}
.id21-logo {
	font-weight: 800;
	text-transform: lowercase;
	letter-spacing: 0.02em;
}
.id21-nav {
	list-style: none;
	display: flex;
	gap: 20px;
	margin: 0;
	padding: 0;
}
.id21-nav a {
	color: #cfd3ff;
	font-weight: 600;
	font-size: 13px;
	text-decoration: none;
}
.id21-nav a:hover {
	color: #fff;
}

/* Hero */
.id21-hero {
	background: radial-gradient(circle at 50% 20%, #182044 0%, #0b1027 45%, #050711 100%);
	color: #fff;
	padding: 72px 24px 64px;
	text-align: center;
}
.id21-badge {
	display: inline-block;
	background: var(--green);
	color: #06210a;
	font-weight: 800;
	padding: 8px 18px;
	border-radius: 99px;
	font-size: 14px;
	margin-bottom: 16px;
}
.id21-rating {
	color: var(--gold);
	font-weight: 700;
	font-size: 14px;
	letter-spacing: 0.03em;
	margin-bottom: 20px;
}
.id21-hero h1 {
	max-width: 960px;
	margin: 0 auto 20px;
	font-size: clamp(30px, 4.3vw, 56px);
	line-height: 1.12;
	letter-spacing: -0.03em;
	text-transform: uppercase;
}
.id21-hero h1 em {
	color: var(--green);
	font-style: normal;
	text-shadow: 0 0 18px rgba(53, 209, 47, 0.55);
}
.id21-hero-desc {
	max-width: 680px;
	margin: 0 auto 32px;
	color: #c7cadb;
}
.id21-hero-note {
	margin: 16px 0 0;
	font-size: 14px;
	color: #9198bd;
}

/* CTA button */
.id21-cta {
	display: inline-block;
	background: var(--blue);
	color: #fff;
	font-weight: 800;
	text-decoration: none;
	padding: 18px 36px;
	font-size: 17px;
	letter-spacing: 0.01em;
	box-shadow: 0 4px var(--blue-dark);
	transition: transform 0.15s ease;
}
.id21-cta:hover {
	transform: translateY(-2px);
	color: #fff;
}
.id21-cta-wide {
	display: block;
	text-align: center;
}
.id21-cta-block {
	text-align: center;
	padding: 0 24px 72px;
	background: inherit;
}
.id21-fineprint {
	font-size: 13px;
	color: var(--muted);
	margin: 14px 0 0;
}
.id21-dark .id21-fineprint {
	color: #9198bd;
}
.id21-trust-badges {
	display: flex;
	gap: 24px;
	justify-content: center;
	margin-top: 18px;
	flex-wrap: wrap;
	font-size: 13px;
	font-weight: 700;
	color: var(--muted);
}
.id21-dark .id21-trust-badges {
	color: #9198bd;
}

/* Sections */
.id21-section {
	padding: 88px 24px;
}
.id21-light {
	background: #fff;
	color: var(--ink);
}
.id21-dark {
	background: var(--navy);
	color: #e9eaf5;
}
.id21-copy-narrow {
	max-width: 760px;
}
.id21-copy-narrow-inline {
	max-width: 760px;
	margin-left: auto;
	margin-right: auto;
}

.id21-section h2 {
	text-align: center;
	font-size: clamp(28px, 4vw, 44px);
	line-height: 1.2;
	letter-spacing: -0.02em;
	text-transform: uppercase;
}
.id21-title-rule {
	width: 220px;
	height: 2px;
	margin: 0 auto 40px;
	background: linear-gradient(90deg, transparent, var(--blue), transparent);
}
.id21-dark .id21-title-rule {
	background: linear-gradient(90deg, transparent, #fff, transparent);
	opacity: 0.5;
}

.id21-copy p {
	margin: 0 0 20px;
}
.id21-lead {
	text-align: center;
	max-width: 700px;
	margin: 0 auto 32px;
}
.id21-note {
	text-align: center;
	font-size: 14px;
	color: var(--muted);
}

.id21-copy blockquote,
.id21-quote {
	font-size: 21px;
	font-weight: 700;
	line-height: 1.45;
	margin: 24px 0;
	padding: 18px 24px;
	background: var(--panel);
	border-left: 5px solid var(--blue);
}
.id21-dark .id21-copy blockquote,
.id21-dark .id21-quote {
	background: #111526;
	border-left-color: var(--green);
	color: #fff;
}

.id21-copy .key-statement,
span.key-statement {
	display: block;
	text-align: center;
	font-size: clamp(22px, 3vw, 32px);
	font-weight: 800;
	line-height: 1.35;
	margin: 28px auto;
	max-width: 760px;
}
.id21-dark .key-statement {
	color: var(--green);
	text-shadow: 0 0 16px rgba(20, 50, 255, 0.5);
}

.id21-tag {
	display: inline-block;
	background: var(--blue);
	color: #fff;
	font-size: 12px;
	font-weight: 800;
	letter-spacing: 0.05em;
	padding: 6px 16px;
	border-radius: 99px;
	margin: 0 auto 18px;
}
.id21-final .id21-tag {
	display: block;
	width: fit-content;
	margin: 0 auto 24px;
}

/* Identity loop diagram */
.id21-loop {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 16px;
	margin: 32px 0;
}
.id21-loop-node {
	background: #111526;
	border: 1px solid #262b48;
	border-radius: 10px;
	padding: 20px;
	text-align: center;
}
.id21-loop-index {
	display: block;
	font-size: 13px;
	font-weight: 800;
	color: var(--green);
	margin-bottom: 8px;
}
.id21-loop-node strong {
	display: block;
	margin-bottom: 6px;
	font-size: 15px;
}
.id21-loop-node span:last-child {
	font-size: 13px;
	color: #9198bd;
}
.id21-loop-return {
	text-align: center;
	font-weight: 700;
	color: var(--green);
	margin: 8px 0 32px;
}

/* Product showcase */
.id21-product-mark {
	text-align: center;
	font-weight: 800;
	letter-spacing: 0.03em;
	color: #fff;
	margin-bottom: 8px;
}
.id21-trust-ribbon {
	text-align: center;
	font-size: 13px;
	font-weight: 700;
	color: var(--gold);
	margin-bottom: 24px;
}
.id21-journey {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 12px;
	margin-top: 32px;
}
.id21-journey-step {
	display: flex;
	align-items: center;
	gap: 10px;
	background: #111526;
	border-radius: 8px;
	padding: 14px 16px;
	font-size: 14px;
}
.id21-journey-index {
	color: var(--green);
	font-weight: 800;
}

/* Evidence ledger */
.id21-ledger {
	border: 1px solid var(--line);
	border-radius: 12px;
	overflow: hidden;
	margin: 32px 0;
}
.id21-ledger-head {
	background: var(--panel);
	font-weight: 800;
	text-align: center;
	padding: 14px;
	letter-spacing: 0.03em;
	text-transform: uppercase;
	font-size: 13px;
}
.id21-ledger-item {
	display: flex;
	align-items: flex-start;
	gap: 14px;
	padding: 18px 20px;
	border-top: 1px solid var(--line);
}
.id21-ledger-check {
	color: var(--green);
	font-weight: 800;
	font-size: 18px;
}
.id21-ledger-number {
	color: var(--muted);
	font-weight: 800;
}
.id21-ledger-item p {
	margin: 4px 0 0;
	color: var(--muted);
	font-size: 15px;
}
.id21-conclusion {
	text-align: center;
	margin-top: 24px;
}
.id21-conclusion span {
	display: block;
	font-size: 13px;
	color: var(--muted);
	margin-bottom: 6px;
}
.id21-conclusion strong {
	font-size: 20px;
}

/* Daily track */
.id21-daily-track {
	display: grid;
	grid-template-columns: repeat(5, 1fr);
	gap: 12px;
	margin: 32px 0;
}
.id21-daily-step {
	text-align: center;
	padding: 18px 10px;
	border: 1px solid var(--line);
	border-radius: 8px;
}
.id21-daily-dot {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 28px;
	height: 28px;
	border-radius: 50%;
	background: var(--blue);
	color: #fff;
	font-weight: 800;
	font-size: 13px;
	margin-bottom: 10px;
}
.id21-daily-step strong {
	display: block;
	margin-bottom: 6px;
	font-size: 14px;
}
.id21-daily-step span:last-child {
	font-size: 12px;
	color: var(--muted);
}
.id21-reset {
	text-align: center;
}
.id21-reset span {
	display: block;
	font-size: 13px;
	color: var(--muted);
	margin-bottom: 6px;
}

/* Evidence engine */
.id21-evidence-examples {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 16px;
	margin: 32px 0;
}
.id21-evidence-card {
	background: #111526;
	border-radius: 8px;
	padding: 20px;
	text-align: center;
}
.id21-evidence-plus {
	display: inline-block;
	background: var(--green);
	color: #06210a;
	font-size: 11px;
	font-weight: 800;
	padding: 4px 10px;
	border-radius: 99px;
	margin-bottom: 10px;
}
.id21-evidence-card strong {
	display: block;
	margin-bottom: 6px;
}
.id21-evidence-card p {
	font-size: 14px;
	color: #9198bd;
	margin: 0;
}
.id21-proof-numbers {
	display: flex;
	justify-content: center;
	gap: 16px;
	margin: 24px 0;
	font-weight: 800;
	font-size: 20px;
	color: #4a4f70;
}
.id21-proof-numbers .is-active {
	color: var(--green);
	font-size: 32px;
}
.id21-old-story {
	text-align: center;
	font-weight: 700;
	margin: 0 0 24px;
}

/* Curriculum modules */
.id21-module-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 20px;
	margin-top: 20px;
}
.id21-module-card {
	border: 1px solid var(--line);
	border-radius: 8px;
	padding: 24px;
}
.id21-module-day {
	display: inline-block;
	font-size: 12px;
	font-weight: 800;
	color: var(--blue);
	margin-bottom: 8px;
}
.id21-module-card h3 {
	font-size: 16px;
	margin-bottom: 8px;
	text-transform: none;
}
.id21-module-card p {
	font-size: 14px;
	color: var(--muted);
	margin: 0 0 14px;
}
.id21-module-card ul {
	margin: 0;
	padding-left: 18px;
	font-size: 13px;
	color: var(--ink);
}
.id21-module-card li {
	margin-bottom: 6px;
}

/* Testimonials / placeholders */
.id21-placeholder-grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: 14px;
	margin: 24px 0;
}
.id21-placeholder {
	border: 2px dashed var(--line);
	border-radius: 7px;
	background: var(--panel);
	color: var(--muted);
	font-size: 12px;
	font-weight: 700;
	text-align: center;
	padding: 40px 10px;
}
.id21-placeholder.has-image {
	border-style: solid;
	padding: 0;
	overflow: hidden;
	aspect-ratio: 1 / 1;
}
.id21-placeholder.has-image img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}
.id21-case-grid {
	grid-template-columns: repeat(3, 1fr);
}

/* Price line */
.id21-price-line {
	text-align: center;
	font-size: clamp(40px, 7vw, 72px);
	font-weight: 800;
	margin: 24px 0;
}

/* Offer / checkout */
.id21-offer-visual {
	text-align: center;
	font-weight: 800;
	color: var(--muted);
	letter-spacing: 0.02em;
	margin-bottom: 6px;
}
.id21-offer-card {
	border: 2px solid var(--blue);
	border-radius: 14px;
	padding: 40px 32px;
	text-align: center;
	margin-top: 24px;
}
.id21-offer-discount {
	display: inline-block;
	background: var(--green);
	color: #06210a;
	font-weight: 800;
	padding: 6px 16px;
	border-radius: 99px;
	font-size: 13px;
	margin-bottom: 14px;
}
.id21-offer-original {
	color: var(--muted);
	margin: 0;
}
.id21-offer-price {
	font-size: clamp(38px, 6vw, 56px);
	font-weight: 800;
	color: var(--blue);
	margin: 4px 0;
}
.id21-offer-save {
	font-size: 14px;
	font-weight: 700;
	color: var(--green);
	margin-bottom: 24px;
}
.id21-offer-benefits {
	list-style: none;
	margin: 0 0 28px;
	padding: 0;
	text-align: left;
	max-width: 480px;
	margin-left: auto;
	margin-right: auto;
}
.id21-offer-benefits li {
	padding: 10px 0;
	border-top: 1px solid var(--line);
	font-size: 15px;
}
.id21-offer-benefits li:first-child {
	border-top: none;
}

/* Guarantee */
.id21-badge-pill {
	display: block;
	width: fit-content;
	margin: 0 auto 20px;
	background: rgba(53, 209, 47, 0.12);
	color: var(--green);
	border: 1px solid var(--green);
	padding: 6px 16px;
	border-radius: 99px;
	font-size: 12px;
	font-weight: 800;
	text-align: center;
}
.id21-guarantee-seal {
	width: 160px;
	height: 160px;
	border-radius: 50%;
	border: 3px solid var(--green);
	display: flex;
	align-items: center;
	justify-content: center;
	text-align: center;
	font-weight: 800;
	margin: 0 auto 32px;
	padding: 16px;
	font-size: 14px;
	color: var(--green);
}
.id21-guarantee-steps {
	max-width: 480px;
	margin: 0 auto 32px;
	padding-left: 20px;
}
.id21-guarantee-steps li {
	margin-bottom: 10px;
}
.id21-decision-block {
	text-align: center;
	margin-top: 32px;
}
.id21-decision-block span {
	font-size: 13px;
	color: #9198bd;
	display: block;
	margin-bottom: 8px;
}

/* Bonus */
.id21-bonus-grid {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap: 20px;
	margin: 32px 0;
}
.id21-bonus-card {
	border: 1px solid var(--line);
	border-radius: 8px;
	padding: 24px;
}
.id21-bonus-index {
	display: inline-block;
	font-size: 12px;
	font-weight: 800;
	color: var(--blue);
	margin-bottom: 8px;
}
.id21-bonus-card h3 {
	font-size: 16px;
	text-transform: none;
	margin-bottom: 8px;
}
.id21-bonus-card p {
	font-size: 14px;
	color: var(--muted);
	margin: 0 0 14px;
}
.id21-bonus-card .id21-quote {
	font-size: 14px;
	margin: 0;
	padding: 12px 16px;
}

/* Decision (two paths) */
.id21-path {
	border: 1px solid #262b48;
	border-radius: 10px;
	padding: 28px;
	margin-bottom: 20px;
}
.id21-path h3 {
	text-align: center;
	font-size: 18px;
	text-transform: uppercase;
}
.id21-path-old {
	opacity: 0.75;
}
.id21-path-new {
	border-color: var(--green);
}
.id21-or {
	text-align: center;
	font-weight: 800;
	color: var(--muted);
	margin: 12px 0;
}
.id21-story-beats {
	padding-left: 20px;
}
.id21-story-beats li {
	margin-bottom: 8px;
}
.id21-decision-price {
	text-align: center;
	margin-top: 32px;
}
.id21-decision-price span:first-child {
	display: block;
	font-size: 13px;
	color: #9198bd;
	margin-bottom: 8px;
}
.id21-decision-price strong {
	display: block;
	font-size: 40px;
	color: var(--green);
	margin-bottom: 8px;
}
.id21-decision-price span:last-child {
	font-size: 13px;
	color: #9198bd;
}

/* FAQ accordion */
.id21-faq-list {
	margin-top: 24px;
}
.id21-faq-item {
	border-bottom: 1px solid var(--line);
	padding: 18px 0;
}
.id21-faq-item summary {
	cursor: pointer;
	font-weight: 700;
	list-style: none;
}
.id21-faq-item summary::-webkit-details-marker {
	display: none;
}
.id21-faq-item summary::after {
	content: '+';
	float: right;
	font-weight: 800;
	color: var(--blue);
}
.id21-faq-item[open] summary::after {
	content: '−';
}
.id21-faq-item p {
	margin: 14px 0 0;
	color: var(--muted);
}

/* Deadline (urgency) */
.id21-deadline {
	text-align: center;
	font-weight: 800;
	color: var(--gold);
}

/* Final */
.id21-final {
	text-align: center;
}
.id21-final h2 {
	max-width: 800px;
	margin: 0 auto 20px;
}
.id21-final .id21-price-line {
	color: var(--green);
}

/* Footer */
.id21-footer {
	background: var(--navy);
	color: #9198bd;
	text-align: center;
	padding: 48px 24px 100px;
	font-size: 14px;
}
.id21-footer strong {
	color: #fff;
	font-size: 18px;
	letter-spacing: 0.02em;
}
.id21-footer p {
	margin: 8px 0;
}
.id21-footer a {
	color: var(--green);
	text-decoration: none;
	font-weight: 700;
}

/* Sticky mobile bar */
.id21-mobilebar {
	display: none;
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	background: var(--navy);
	color: #fff;
	padding: 14px 20px;
	align-items: center;
	justify-content: space-between;
	z-index: 30;
	box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
}
.id21-mobilebar span {
	font-weight: 800;
	font-size: 14px;
}
.id21-mobilebar a {
	background: var(--blue);
	color: #fff;
	text-decoration: none;
	font-weight: 800;
	padding: 10px 20px;
	box-shadow: 0 3px var(--blue-dark);
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 900px) {
	.id21-loop {
		grid-template-columns: repeat(2, 1fr);
	}
	.id21-module-grid,
	.id21-bonus-grid,
	.id21-evidence-examples {
		grid-template-columns: repeat(2, 1fr);
	}
	.id21-daily-track {
		grid-template-columns: repeat(3, 1fr);
	}
	.id21-journey {
		grid-template-columns: 1fr;
	}
	.id21-placeholder-grid {
		grid-template-columns: repeat(2, 1fr);
	}
}

@media (max-width: 640px) {
	.id21-section {
		padding: 64px 20px;
	}
	.id21-hero {
		padding: 56px 20px 48px;
	}
	.id21-loop,
	.id21-module-grid,
	.id21-bonus-grid,
	.id21-evidence-examples,
	.id21-daily-track,
	.id21-case-grid {
		grid-template-columns: 1fr;
	}
	.id21-mobilebar {
		display: flex;
	}
	.id21-footer {
		padding-bottom: 110px;
	}
	.id21-offer-card {
		padding: 28px 20px;
	}
}