/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
	html { scroll-behavior: auto; }
	*, *::before, *::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.01ms !important;
	}
}
body {
	margin: 0;
	/* Positioning context for the homepage's decorative ant trail (see
	   ant-trail.css) — lets it be position:absolute against the whole
	   document instead of position:fixed against the viewport, so it
	   scrolls normally and reads as one continuous trail. */
	position: relative;
	font-family: var(--font-body);
	font-size: var(--step-0);
	line-height: 1.6;
	color: var(--color-body);
	background: var(--color-surface);
}
img, svg, video { max-width: 100%; height: auto; display: block; }
table { border-collapse: collapse; width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--color-navy); text-decoration-thickness: 1.5px; text-underline-offset: 2px; }
a:hover { color: var(--color-navy-700); }

/* Headings */
h1, h2, h3, h4, .font-display {
	font-family: var(--font-display);
	color: var(--color-ink);
	line-height: 1.15;
	font-weight: 600;
	margin: 0 0 var(--space-s);
}
h1 { font-size: var(--step-4); }
h2 { font-size: var(--step-3); }
h3 { font-size: var(--step-2); }
h4 { font-size: var(--step-1); }
p { margin: 0 0 var(--space-m); }
.eyebrow {
	display: inline-block;
	font-family: var(--font-body);
	font-size: var(--step--1);
	font-weight: 700;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--color-navy-700);
	margin: 0 0 var(--space-2xs);
}

/* Focus visibility — WCAG AA */
a:focus-visible, button:focus-visible, input:focus-visible,
select:focus-visible, textarea:focus-visible, [tabindex]:focus-visible {
	outline: 3px solid var(--color-focus);
	outline-offset: 2px;
	border-radius: 2px;
}

/* Skip link */
.skip-link {
	position: absolute;
	left: var(--space-s);
	top: -100px;
	background: var(--color-navy);
	color: #fff;
	padding: var(--space-xs) var(--space-s);
	border-radius: var(--radius-s);
	z-index: 1000;
	transition: top var(--transition);
}
.skip-link:focus {
	top: var(--space-s);
	color: #fff;
}
.screen-reader-text {
	position: absolute;
	width: 1px; height: 1px;
	overflow: hidden;
	clip: rect(1px, 1px, 1px, 1px);
	white-space: nowrap;
}

/* Layout primitives */
.container {
	max-width: var(--container-max);
	margin-inline: auto;
	padding-inline: var(--container-pad);
}
.section {
	padding-block: var(--space-2xl);
}
.section--tight { padding-block: var(--space-xl); }
.section--alt { background: var(--color-surface-alt); }
.section-head {
	max-width: 46rem;
	margin-bottom: var(--space-l);
}
.section-head--center { margin-inline: auto; text-align: center; }
.stack > * + * { margin-top: var(--space-m); }
.text-muted { color: var(--color-muted); }

/* Buttons */
.btn {
	display: inline-flex;
	align-items: center;
	gap: var(--space-2xs);
	font-weight: 600;
	padding: 0.75em 1.4em;
	border-radius: var(--radius-s);
	border: 2px solid transparent;
	cursor: pointer;
	text-decoration: none;
	transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn-primary {
	/* --color-blue fails AA for white text (~3:1); --color-action is the
	   same accent hue darkened until white text clears 4.5:1. */
	background: var(--color-action);
	color: #fff;
}
.btn-primary:hover { background: var(--color-navy-700); color: #fff; }
.btn-outline {
	background: transparent;
	border-color: currentColor;
	color: inherit;
}
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-row { display: flex; flex-wrap: wrap; gap: var(--space-s); }

/* Badge */
.badge {
	display: inline-block;
	font-size: var(--step--1);
	font-weight: 700;
	padding: 0.25em 0.75em;
	border-radius: 999px;
	background: var(--color-blue-100);
	color: var(--color-navy);
	letter-spacing: 0.02em;
}