/* ============================================================
   Reset & base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	background: var(--cream);
	color: var(--ink);
	font-family: var(--font-body);
	font-size: 16px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}
html[lang="th"] body { font-family: var(--font-thai), var(--font-body); }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
	font-family: var(--font-display);
	font-weight: 800;
	letter-spacing: -0.025em;
	color: var(--ink);
	line-height: 1.15;
	margin: 0 0 16px;
}
h1 { font-size: 56px; }
h2 { font-size: 38px; }
h3 { font-size: 22px; }
p { color: var(--slate-green); margin: 0 0 16px; max-width: 70ch; }

.container {
	max-width: var(--content-max);
	margin: 0 auto;
	padding: 0 var(--side-padding);
}

.mark {
	background: linear-gradient(to top, var(--bright-yellow) 0 38%, transparent 38%);
	padding: 0 2px;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 8px;
	font-family: var(--font-body);
	font-weight: 600;
	font-size: 15px;
	padding: 14px 28px;
	border-radius: var(--radius-pill);
	border: 1px solid transparent;
	min-height: 44px;
	transition: transform 0.15s ease, background-color 0.15s ease;
	white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--signal-green); color: #fff; }
.btn--primary:hover { background: var(--forest); }
.btn--dark { background: var(--ink); color: #fff; }
.btn--outline { background: transparent; color: var(--ink); border-color: var(--border); }
.btn--outline-light { background: transparent; color: #fff; border-color: rgba(255,255,255,0.35); }
.btn--outline-light:hover { background: rgba(255,255,255,0.08); }
.btn--yellow { background: var(--bright-yellow); color: var(--ink); }
.btn--sm { padding: 10px 20px; font-size: 14px; min-height: 36px; }

/* ============================================================
   Logo
   ============================================================ */
.lnv-logo { display: inline-flex; align-items: center; gap: 2px; }
.lnv-logo__name {
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 22px;
	letter-spacing: -0.03em;
	color: var(--ink);
}
.lnv-logo__ai {
	font-family: var(--font-display);
	font-weight: 800;
	font-size: 22px;
	letter-spacing: -0.03em;
	color: var(--signal-green);
}
.lnv-logo__spark { fill: var(--bright-yellow); margin: 0 1px; }
.site-footer .lnv-logo__name,
.on-dark .lnv-logo__name { color: #fff; }

/* ============================================================
   Header / nav
   ============================================================ */
.site-header {
	border-bottom: 1px solid var(--border);
	background: var(--cream);
	position: sticky;
	top: 0;
	z-index: 100;
}
.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	padding: 16px var(--side-padding);
	max-width: var(--content-max);
	margin: 0 auto;
}
.primary-nav {
	display: flex;
	align-items: center;
	gap: 4px;
	background: transparent;
	border-radius: var(--radius-pill);
	padding: 4px;
}
.primary-nav a {
	display: inline-block;
	padding: 10px 18px;
	border-radius: var(--radius-pill);
	font-weight: 500;
	color: var(--ink);
	font-size: 15px;
}
.primary-nav a:hover { background: var(--mint-wash); }
.primary-nav a.is-active { background: var(--ink); color: #fff; }

.site-header__right { display: flex; align-items: center; gap: 20px; }
.lang-switch { display: flex; align-items: center; gap: 6px; font-weight: 600; font-size: 15px; }
.lang-switch a { color: var(--slate-green); }
.lang-switch a.is-active { color: var(--ink); }
.lang-switch span { color: var(--border); }

.nav-toggle { display: none; background: none; border: 0; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); margin: 5px 0; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer {
	background: var(--deep-green);
	color: #fff;
	padding: 64px 0 32px;
	margin-top: 96px;
}
.site-footer p, .site-footer a { color: rgba(255,255,255,0.75); }
.site-footer a:hover { color: #fff; }
.site-footer__grid {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr;
	gap: 32px;
	padding-bottom: 40px;
	border-bottom: 1px solid rgba(255,255,255,0.15);
}
.site-footer__links li { margin-bottom: 10px; }
.lnv-social { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 16px; }
.site-footer__bottom {
	display: flex;
	justify-content: space-between;
	align-items: center;
	flex-wrap: wrap;
	gap: 12px;
	padding-top: 24px;
	font-size: 14px;
}

/* ============================================================
   Cards
   ============================================================ */
.lnv-card {
	display: block;
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius-card);
	overflow: hidden;
}
.lnv-card__media { aspect-ratio: 16/10; background: var(--mint-wash); overflow: hidden; }
.lnv-card__media img { width: 100%; height: 100%; object-fit: cover; }
.lnv-card__body { padding: 20px; }
.lnv-card__meta-row { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.lnv-card__title { font-size: 19px; margin-bottom: 8px; }
.lnv-card__excerpt { font-size: 14px; margin-bottom: 12px; }
.lnv-card__date { font-size: 13px; color: var(--slate-green); margin: 0; }

.lnv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.lnv-grid--2 { grid-template-columns: repeat(2, 1fr); }
.lnv-grid--5 { grid-template-columns: repeat(5, 1fr); }

/* ============================================================
   Pills / chips / badges
   ============================================================ */
.lnv-pill {
	display: inline-block;
	font-size: 13px;
	font-weight: 600;
	padding: 8px 18px;
	border-radius: var(--radius-pill);
	border: 1px solid var(--border);
	background: #fff;
	color: var(--ink);
}
.lnv-pill.is-active { background: var(--ink); color: #fff; border-color: var(--ink); }
.lnv-pill--card,
.lnv-pill--teachers, .lnv-pill--school, .lnv-pill--learning, .lnv-pill--kids, .lnv-pill--future,
.lnv-pill[class*="lnv-pill--pillar"] { background: var(--mint-wash); color: var(--forest); border: none; text-transform: uppercase; font-size: 11px; letter-spacing: 0.04em; }

.lnv-lang-badge {
	display: inline-block;
	font-size: 11px;
	font-weight: 600;
	padding: 4px 10px;
	border-radius: var(--radius-pill);
	background: var(--cream-deep);
	color: var(--slate-green);
	border: 1px solid var(--border);
}
.lnv-lang-badge--both { background: var(--mint-wash); color: var(--forest); }

/* ============================================================
   Breadcrumbs, notices, placeholders
   ============================================================ */
.lnv-breadcrumbs { font-size: 14px; color: var(--slate-green); margin-bottom: 16px; }
.lnv-breadcrumbs a { color: var(--forest); }
.lnv-breadcrumbs__sep { margin: 0 8px; color: var(--border); }

.lnv-notice {
	background: var(--cream-deep);
	border: 1px solid var(--border);
	border-radius: 12px;
	padding: 14px 18px;
	font-size: 14px;
	color: var(--slate-green);
	margin-bottom: 24px;
}

.lnv-placeholder {
	display: flex;
	align-items: center;
	justify-content: center;
	background: #F4F3EC;
	border: 1px dashed #C9C6B5;
	border-radius: var(--radius-card);
	color: var(--slate-green);
	font-size: 13px;
	text-align: center;
	min-height: 120px;
	padding: 16px;
}
.lnv-placeholder--form { min-height: 220px; }

/* ============================================================
   Cookie consent
   ============================================================ */
.lnv-cookie-banner {
	position: fixed;
	left: 20px;
	right: 20px;
	bottom: 20px;
	z-index: 1000;
	background: var(--deep-green);
	color: #fff;
	border-radius: 20px;
	box-shadow: 0 10px 40px rgba(0,0,0,0.25);
	max-width: 720px;
	margin: 0 auto;
}
.lnv-cookie-banner[hidden] { display: none; }
.lnv-cookie-banner__inner { padding: 28px; }
.lnv-cookie-banner__text h3 { color: #fff; font-size: 20px; margin-bottom: 8px; }
.lnv-cookie-banner__text p { color: rgba(255,255,255,0.75); font-size: 14px; margin-bottom: 20px; }
.lnv-cookie-banner__actions { display: flex; gap: 12px; flex-wrap: wrap; }

.lnv-cookie-modal { position: fixed; inset: 0; z-index: 1100; display: flex; align-items: center; justify-content: center; padding: 20px; }
.lnv-cookie-modal[hidden] { display: none; }
.lnv-cookie-modal__backdrop { position: absolute; inset: 0; background: rgba(11,59,36,0.55); }
.lnv-cookie-modal__panel {
	position: relative;
	background: var(--cream);
	border-radius: 24px;
	padding: 40px;
	max-width: 560px;
	width: 100%;
	max-height: 85vh;
	overflow-y: auto;
}
.lnv-cookie-modal__panel h2 { margin-bottom: 12px; }
.lnv-cookie-row {
	display: flex;
	align-items: flex-start;
	justify-content: space-between;
	gap: 16px;
	background: #fff;
	border: 1px solid var(--border);
	border-radius: 16px;
	padding: 20px;
	margin-bottom: 16px;
}
.lnv-cookie-row p { font-size: 13px; margin: 4px 0 0; }
.lnv-toggle {
	position: relative;
	width: 48px;
	height: 28px;
	border-radius: var(--radius-pill);
	background: #D8D5C4;
	border: none;
	flex-shrink: 0;
	padding: 0;
}
.lnv-toggle__knob {
	position: absolute;
	top: 3px; left: 3px;
	width: 22px; height: 22px;
	border-radius: 50%;
	background: #fff;
	transition: left 0.15s ease;
}
.lnv-toggle[aria-pressed="true"] { background: var(--signal-green); }
.lnv-toggle[aria-pressed="true"] .lnv-toggle__knob { left: 23px; }
.lnv-toggle--locked { background: var(--signal-green); opacity: 0.6; }
.lnv-toggle--locked .lnv-toggle__knob { left: 23px; }
.lnv-cookie-modal__actions { display: flex; gap: 12px; justify-content: flex-end; margin-top: 8px; }

/* ============================================================
   Video (click-to-load)
   ============================================================ */
.lnv-video { position: relative; aspect-ratio: 16/9; border-radius: var(--radius-card); overflow: hidden; background: var(--ink); }
.lnv-video__play { position: absolute; inset: 0; width: 100%; height: 100%; padding: 0; border: 0; background: none; }
.lnv-video__play img { width: 100%; height: 100%; object-fit: cover; opacity: 0.85; }
.lnv-video__play-icon {
	position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
	width: 64px; height: 64px; border-radius: 50%;
	background: var(--signal-green); color: #fff;
	display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.lnv-video iframe { width: 100%; height: 100%; border: 0; }
.lnv-video__consent-gate {
	position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center;
	gap: 12px; background: rgba(11,59,36,0.92); color: #fff; text-align: center; padding: 24px;
}

/* ============================================================
   Forms
   ============================================================ */
input[type="text"], input[type="email"], input[type="search"], textarea {
	font-family: var(--font-body);
	font-size: 15px;
	padding: 14px 20px;
	border-radius: var(--radius-pill);
	border: 1px solid var(--border);
	background: #fff;
	color: var(--ink);
	width: 100%;
}
textarea { border-radius: 20px; }

/* ============================================================
   Homepage sections
   ============================================================ */
.eyebrow {
	font-family: var(--font-body);
	font-weight: 700;
	font-size: 13px;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--forest);
	margin-bottom: 12px;
}
.eyebrow--on-dark { color: var(--lime); }

.lnv-hero {
	position: relative;
	overflow: hidden;
	background: linear-gradient(to bottom, var(--cream-deep), var(--cream) 70%);
	padding: 80px 0 64px;
}
.lnv-hero__sunrise {
	position: absolute;
	left: 50%;
	bottom: -60%;
	width: 1400px;
	height: 1400px;
	transform: translateX(-50%);
	border-radius: 50%;
	background: radial-gradient(circle at center, var(--bright-yellow) 0%, transparent 62%);
	opacity: 0.55;
	z-index: 0;
}
.lnv-hero__inner { position: relative; z-index: 1; max-width: 780px; text-align: center; margin: 0 auto; }
.lnv-hero__inner .eyebrow { display: block; text-align: center; }
.lnv-hero h1 { font-size: 52px; }
.lnv-hero__lede { font-size: 18px; max-width: 60ch; margin: 0 auto 32px; }
.lnv-hero__ctas { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }
.lnv-hero__pillars { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

.lnv-section { padding: 80px 0; }
.lnv-section__head { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 32px; flex-wrap: wrap; }
.lnv-section__lede { font-size: 17px; max-width: 65ch; margin-bottom: 32px; }
.lnv-link-arrow { color: var(--forest); font-weight: 600; white-space: nowrap; }

.lnv-ebook-banner {
	display: grid;
	grid-template-columns: 220px 1fr;
	gap: 32px;
	align-items: center;
	background: var(--cream-deep);
	border: 1px solid var(--border);
	border-radius: var(--radius-card);
	padding: 32px;
	margin-bottom: 32px;
}
.lnv-ebook-banner__cover { aspect-ratio: 3/4; }

.lnv-panel { border-radius: 24px; padding: 48px; margin-bottom: 40px; }
.lnv-panel--dark { background: linear-gradient(135deg, var(--deep-green), var(--forest)); }

.lnv-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center; }
.lnv-stat__num { display: block; font-family: var(--font-display); font-weight: 800; font-size: 36px; color: var(--ink); }
.lnv-stat__label { display: block; font-size: 13px; color: var(--slate-green); margin-top: 4px; }

.lnv-testimonial {
	display: flex;
	gap: 24px;
	align-items: flex-start;
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius-card);
	padding: 32px;
	margin: 0;
}
.lnv-testimonial__avatar { width: 72px; height: 72px; border-radius: 50%; flex-shrink: 0; font-size: 11px; }
.lnv-testimonial__quote { font-size: 18px; color: var(--ink); font-style: normal; }
.lnv-testimonial__name { font-weight: 700; margin-bottom: 0; }
.lnv-testimonial__role { font-size: 13px; margin: 0; }

.lnv-founder { display: flex; gap: 24px; align-items: center; margin-top: 48px; padding-top: 40px; border-top: 1px solid var(--border); }

.lnv-section--contact { background: var(--mint-wash); }
.lnv-contact { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.lnv-contact__details { margin: 24px 0 32px; }
.lnv-contact__details li { margin-bottom: 8px; color: var(--slate-green); }
.lnv-contact__form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); padding: 32px; }

/* ============================================================
   Knowledge Hub (archive / category / single)
   ============================================================ */
.lnv-hero--hub { padding: 64px 0 48px; }
.lnv-hub-search { display: flex; gap: 12px; max-width: 620px; margin: 0 auto; }
.lnv-hub-search input { flex: 1; }

.lnv-topic-filter { display: flex; gap: 10px; flex-wrap: wrap; margin: 32px 0; }
.lnv-muted { color: var(--slate-green); font-size: 14px; }

.lnv-panel--newsletter { background: var(--cream-deep); border: 1px solid var(--border); padding: 40px; }
.lnv-panel--newsletter h3 { max-width: 36ch; }

.lnv-pillar-card {
	display: block;
	background: #fff;
	border: 1px solid var(--border);
	border-radius: var(--radius-card);
	padding: 24px;
	text-align: center;
}
.lnv-pillar-card h3 { font-size: 16px; margin-bottom: 6px; }
.lnv-pillar-card span { font-size: 13px; color: var(--slate-green); }

.lnv-intro-answer { background: var(--mint-wash); border-radius: var(--radius-card); padding: 28px; margin: 24px 0; }
.lnv-intro-answer p { color: var(--ink); font-size: 17px; }

.lnv-on-topic { margin: 32px 0; }
.lnv-on-topic ul { display: flex; flex-direction: column; gap: 8px; }
.lnv-on-topic a { color: var(--forest); font-weight: 500; }

.lnv-article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 56px; margin-top: 24px; align-items: start; }
.lnv-article h1 { margin-top: 12px; }
.lnv-article__body { font-size: 17px; line-height: 1.75; margin-top: 24px; }
.lnv-article__body h2 { margin-top: 40px; font-size: 26px; }
.lnv-article__body p { max-width: none; }

.lnv-author-row { display: flex; gap: 14px; align-items: center; margin: 20px 0 28px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.lnv-author-row p { font-size: 13px; margin: 2px 0 0; }

.lnv-tldr { background: var(--cream-deep); border-radius: var(--radius-card); padding: 28px; margin-bottom: 32px; }
.lnv-tldr p:last-child { color: var(--ink); font-size: 17px; margin: 0; }

.lnv-faq { margin-top: 40px; }
.lnv-faq__item { border-bottom: 1px solid var(--border); padding: 18px 0; }
.lnv-faq__item summary { font-weight: 600; cursor: pointer; color: var(--ink); }
.lnv-faq__item p { margin-top: 12px; }

.lnv-sidebar { position: sticky; top: 96px; display: flex; flex-direction: column; gap: 24px; }
.lnv-toc { background: var(--cream-deep); border-radius: var(--radius-card); padding: 24px; }
.lnv-toc ul { display: flex; flex-direction: column; gap: 10px; margin-top: 8px; }
.lnv-toc a { font-size: 14px; color: var(--slate-green); }
.lnv-toc a.is-active { color: var(--forest); font-weight: 600; }
.lnv-sidebar__cta { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); padding: 24px; }

/* ============================================================
   Legal / privacy page
   ============================================================ */
.lnv-hero--legal { padding: 56px 0 32px; text-align: left; }
.lnv-hero--legal .lnv-hero__inner { text-align: left; margin: 0; }
.lnv-hero--legal .eyebrow { text-align: left; }

.lnv-table-wrap { overflow-x: auto; margin: 20px 0; }
.lnv-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.lnv-table th, .lnv-table td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
.lnv-table th { font-family: var(--font-display); font-weight: 700; color: var(--ink); background: var(--cream-deep); }
.lnv-table td { color: var(--slate-green); }

.lnv-list { margin: 0 0 20px; padding-left: 20px; list-style: disc; }
.lnv-list li { color: var(--slate-green); margin-bottom: 8px; }

/* ============================================================
   Search
   ============================================================ */
.lnv-search-layout { display: grid; grid-template-columns: 1fr 260px; gap: 40px; margin-top: 24px; align-items: start; }

/* ============================================================
   E-book gate
   ============================================================ */
.lnv-ebook-gate { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 24px; align-items: start; }
.lnv-ebook-gate__form { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); padding: 32px; position: sticky; top: 96px; }

/* ============================================================
   Responsive — spec §7
   ============================================================ */
@media (min-width: 641px) and (max-width: 1024px) {
	.site-header__inner { flex-wrap: wrap; row-gap: 12px; padding: 12px 20px; }
	.primary-nav { gap: 0; }
	.primary-nav a { padding: 8px 12px; font-size: 14px; }
	.site-header__right { gap: 12px; }
	.site-header__right .btn { padding: 10px 18px; font-size: 14px; }
}

@media (max-width: 1024px) {
	.lnv-grid { grid-template-columns: repeat(2, 1fr); }
	.lnv-grid--5 { grid-template-columns: repeat(3, 1fr); }
	.site-footer__grid { grid-template-columns: 1fr 1fr; }
	.lnv-stats { grid-template-columns: repeat(2, 1fr); }
	.lnv-contact { grid-template-columns: 1fr; }
	.lnv-ebook-banner { grid-template-columns: 1fr; }
	.lnv-article-layout { grid-template-columns: 1fr; }
	.lnv-sidebar { position: static; }
	.lnv-ebook-gate { grid-template-columns: 1fr; }
	.lnv-ebook-gate__form { position: static; }
	.lnv-search-layout { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
	:root { --side-padding: 20px; }
	h1 { font-size: 32px; }
	h2 { font-size: 26px; }
	.primary-nav { display: none; flex-direction: column; align-items: stretch; position: fixed; top: 73px; left: 0; right: 0; bottom: 0; background: var(--cream); padding: 24px; z-index: 99; }
	.primary-nav.is-open { display: flex; }
	.primary-nav a { padding: 16px 18px; font-size: 18px; min-height: 44px; }
	.nav-toggle { display: block; order: 2; }
	.site-header__inner { flex-wrap: nowrap; gap: 8px; padding: 12px 16px; }
	.lnv-logo__name, .lnv-logo__ai { font-size: 17px; }
	.site-header__right { order: 3; gap: 8px; }
	.lang-switch { font-size: 13px; gap: 4px; }
	.site-header__right .btn { padding: 10px 14px; font-size: 13px; }
	.lnv-grid, .lnv-grid--2, .lnv-grid--5 { grid-template-columns: 1fr; }
	.site-footer__grid { grid-template-columns: 1fr; }
	.lnv-cookie-banner { left: 12px; right: 12px; bottom: 12px; }
	.lnv-cookie-banner__actions .btn { flex: 1; }
	.lnv-hero h1 { font-size: 30px; }
	.lnv-hero__inner { text-align: left; }
	.lnv-hero__inner .eyebrow { text-align: left; }
	.lnv-hero__lede { margin-left: 0; margin-right: 0; }
	.lnv-hero__ctas { justify-content: flex-start; }
	.lnv-hero__pillars { justify-content: flex-start; }
	.lnv-stats { grid-template-columns: repeat(2, 1fr); }
	.lnv-panel { padding: 28px; }
	.lnv-founder { flex-direction: column; align-items: flex-start; text-align: left; }
	.lnv-testimonial { flex-direction: column; }
	.lnv-hub-search { flex-direction: column; }
	.lnv-panel--newsletter, .lnv-tldr, .lnv-intro-answer { padding: 20px; }
}