:root {
	--navy: #0c2340;
	--navy-light: #1a3a6b;
	--gold: #f0b429;
	--gold-dark: #d99a0e;
	--blue: #2d6fad;
	--bg: #f7f9fc;
	--white: #ffffff;
	--text: #1e293b;
	--muted: #64748b;
	--radius: 12px;
	--shadow: 0 8px 30px rgba(12, 35, 64, 0.08);
	--max: 1140px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
	margin: 0;
	font-family: 'Kanit', system-ui, sans-serif;
	color: var(--text);
	background: var(--bg);
	line-height: 1.65;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--gold-dark); }

.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.skip-link {
	position: absolute; left: -9999px; top: 0; z-index: 9999;
	background: var(--gold); color: var(--navy); padding: .5rem 1rem;
}
.skip-link:focus { left: 1rem; top: 1rem; }

/* Header */
.site-header {
	background: var(--white);
	box-shadow: var(--shadow);
	position: sticky; top: 0; z-index: 100;
}
.header-inner {
	display: flex; align-items: center; justify-content: space-between;
	padding: .75rem 0; gap: 1rem;
}
.brand img { height: 56px; width: auto; }
.site-nav ul {
	display: flex; gap: .25rem; list-style: none; margin: 0; padding: 0;
}
.site-nav a {
	display: block; padding: .55rem 1rem; border-radius: 999px;
	color: var(--navy); font-weight: 500; transition: .2s;
}
.site-nav a:hover,
.site-nav a.active {
	background: var(--navy); color: var(--gold);
}
.nav-toggle {
	display: none; flex-direction: column; gap: 5px;
	background: none; border: none; cursor: pointer; padding: .5rem;
}
.nav-toggle span {
	display: block; width: 24px; height: 2px; background: var(--navy);
}

/* Hero */
.hero {
	background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 55%, #2d5a8a 100%);
	color: var(--white); padding: 4.5rem 0 5rem; position: relative; overflow: hidden;
}
.hero::after {
	content: ''; position: absolute; right: -10%; top: -30%;
	width: 50%; height: 160%; background: var(--gold); opacity: .08;
	transform: rotate(12deg); border-radius: 2rem;
}
.hero-grid {
	display: grid; grid-template-columns: 1.1fr .9fr; gap: 2.5rem; align-items: center;
	position: relative; z-index: 1;
}
.hero h1 {
	font-size: clamp(1.75rem, 4vw, 2.75rem); line-height: 1.25; margin: 0 0 1rem;
}
.hero h1 span { color: var(--gold); }
.hero p.lead { font-size: 1.1rem; opacity: .92; margin: 0 0 1.75rem; max-width: 36rem; }
.hero-card {
	background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.15);
	border-radius: var(--radius); padding: 1.5rem; backdrop-filter: blur(6px);
}
.hero-card img { margin: 0 auto 1rem; filter: drop-shadow(0 8px 24px rgba(0,0,0,.2)); }

.btn {
	display: inline-flex; align-items: center; gap: .5rem;
	padding: .75rem 1.5rem; border-radius: 999px; font-weight: 600;
	border: none; cursor: pointer; font-family: inherit; font-size: 1rem;
	transition: transform .15s, box-shadow .15s;
}
.btn-primary { background: var(--gold); color: var(--navy); }
.btn-primary:hover { background: var(--gold-dark); color: var(--navy); transform: translateY(-1px); }
.btn-outline {
	background: transparent; color: var(--white);
	border: 2px solid rgba(255,255,255,.5);
}
.btn-outline:hover { border-color: var(--gold); color: var(--gold); }
.btn-row { display: flex; flex-wrap: wrap; gap: .75rem; }

/* Sections */
.section { padding: 4rem 0; }
.section-title {
	text-align: center; margin: 0 0 .5rem;
	font-size: clamp(1.5rem, 3vw, 2rem); color: var(--navy);
}
.section-title span { color: var(--gold-dark); }
.section-sub { text-align: center; color: var(--muted); max-width: 40rem; margin: 0 auto 2.5rem; }

.card-grid {
	display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem;
}
.card {
	background: var(--white); border-radius: var(--radius); padding: 1.75rem;
	box-shadow: var(--shadow); border-top: 4px solid var(--gold);
}
.card h3 { margin: 0 0 .75rem; color: var(--navy); font-size: 1.2rem; }
.card p { margin: 0; color: var(--muted); }

.page-hero {
	background: var(--navy); color: var(--white); padding: 3rem 0;
}
.page-hero h1 { margin: 0; font-size: clamp(1.75rem, 3vw, 2.25rem); }
.page-hero p { margin: .5rem 0 0; opacity: .85; }

.split {
	display: grid; grid-template-columns: 1fr 1fr; gap: 2.5rem; align-items: start;
}
.prose h2 { color: var(--navy); margin-top: 0; }
.prose p { color: var(--muted); }

/* Video grid */
.video-grid {
	display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem;
}
.video-card {
	background: var(--white); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
}
.video-card iframe { width: 100%; aspect-ratio: 16/9; border: 0; display: block; }
.video-card .video-body { padding: 1rem 1.25rem 1.25rem; }
.video-card h3 { margin: 0; font-size: 1rem; color: var(--navy); }
.video-card a.ext { font-size: .9rem; }

.featured-video {
	border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
	background: var(--white); margin-bottom: 2rem;
}
.featured-video iframe { width: 100%; aspect-ratio: 16/9; border: 0; }

/* Contact */
.contact-grid {
	display: grid; grid-template-columns: 1fr 1fr; gap: 2rem;
}
.contact-box {
	background: var(--white); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow);
}
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: .65rem 0; border-bottom: 1px solid #e2e8f0; }
.contact-list li:last-child { border-bottom: none; }
.contact-list strong { display: block; color: var(--navy); margin-bottom: .15rem; }
.contact-form label { display: block; font-weight: 500; margin-bottom: .35rem; color: var(--navy); }
.contact-form input,
.contact-form textarea {
	width: 100%; padding: .7rem .85rem; border: 1px solid #cbd5e1;
	border-radius: 8px; font-family: inherit; font-size: 1rem; margin-bottom: 1rem;
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.map-wrap { border-radius: var(--radius); overflow: hidden; margin-top: 2rem; box-shadow: var(--shadow); }
.map-wrap iframe { width: 100%; height: 320px; border: 0; }

.stats {
	display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2rem;
}
.stat {
	text-align: center; background: rgba(255,255,255,.1); border-radius: var(--radius); padding: 1.25rem;
}
.stat strong { display: block; font-size: 1.75rem; color: var(--gold); }
.stat span { font-size: .9rem; opacity: .85; }

/* Footer */
.site-footer {
	background: var(--navy); color: rgba(255,255,255,.85); margin-top: 3rem;
}
.footer-grid {
	display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 2rem;
	padding: 3rem 0 2rem;
}
.footer-grid h3 { color: var(--gold); margin: 0 0 1rem; font-size: 1.05rem; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links a { color: rgba(255,255,255,.85); }
.footer-links a:hover { color: var(--gold); }
.footer-brand .muted { font-size: .9rem; opacity: .75; }
.footer-bottom {
	border-top: 1px solid rgba(255,255,255,.12); padding: 1rem 0 1.5rem;
	text-align: center; font-size: .875rem; opacity: .7;
}

.clients {
	display: flex; flex-wrap: wrap; gap: 1rem; justify-content: center;
}
.client-badge {
	background: var(--white); padding: .65rem 1.25rem; border-radius: 999px;
	font-size: .9rem; color: var(--navy); box-shadow: var(--shadow); font-weight: 500;
}

@media (max-width: 900px) {
	.hero-grid, .split, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
	.stats { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
	.nav-toggle { display: flex; }
	.site-nav {
		position: absolute; left: 0; right: 0; top: 100%;
		background: var(--white); box-shadow: var(--shadow);
		display: none; padding: .5rem 1rem 1rem;
	}
	.site-nav.open { display: block; }
	.site-nav ul { flex-direction: column; }
	.header-inner { position: relative; flex-wrap: wrap; }
}