/* ============================================================================
   Factory ERP — marketing site
   ----------------------------------------------------------------------------
   Visual language: continuous-feed greenbar accounting paper, the thing this
   software replaces. Alternating pale-green bands, printed rule lines, red
   posting ink, and the mill-grey of a fabrication shop. One moment of motion:
   the hero voucher posts itself and the balance stamp lands.
   ========================================================================== */

:root {
	--paper: #f4f5f0;
	--bar: #dce6d4;
	--ink: #17211c;
	--rule: #a3b3a0;
	--stamp: #a32b18;
	--steel: #4e5f68;
	--steel-soft: #7d8d95;

	--measure: 62ch;
	--gutter: clamp(1.25rem, 4vw, 3.5rem);
	--shell: 1180px;

	--display: "Archivo", "Helvetica Neue", Arial, sans-serif;
	--body: "Source Serif 4", Georgia, "Times New Roman", serif;
	--numeric: "Archivo", ui-monospace, monospace;
}

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	background: var(--paper);
	color: var(--ink);
	font-family: var(--body);
	font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
	line-height: 1.65;
	font-synthesis-weight: none;
}

img {
	max-width: 100%;
	display: block;
}

a {
	color: inherit;
}

:focus-visible {
	outline: 3px solid var(--stamp);
	outline-offset: 3px;
}

.shell {
	width: min(100% - (var(--gutter) * 2), var(--shell));
	margin-inline: auto;
}

.skip {
	position: absolute;
	left: -9999px;
	top: 0;
	background: var(--ink);
	color: var(--paper);
	padding: 0.75rem 1rem;
	z-index: 50;
}

.skip:focus {
	left: 0.5rem;
	top: 0.5rem;
}

/* ------------------------------------------------------------------ header */

.masthead {
	border-bottom: 1px solid var(--rule);
	background: var(--paper);
	position: sticky;
	top: 0;
	z-index: 20;
}

.masthead__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1.5rem;
	padding-block: 0.9rem;
}

.wordmark {
	display: inline-flex;
	align-items: baseline;
	gap: 0.55rem;
	font-family: var(--display);
	font-weight: 700;
	letter-spacing: -0.02em;
	font-size: 1.0625rem;
	text-decoration: none;
}

.wordmark__rule {
	width: 1.6rem;
	height: 0.7rem;
	border-top: 2px solid var(--ink);
	border-bottom: 2px solid var(--stamp);
	transform: translateY(-0.1rem);
}

.masthead nav {
	display: flex;
	align-items: center;
	gap: clamp(0.75rem, 2vw, 1.75rem);
	font-family: var(--display);
	font-size: 0.875rem;
	font-weight: 500;
}

.masthead nav a {
	text-decoration: none;
	padding-block: 0.35rem;
	border-bottom: 2px solid transparent;
}

.masthead nav a:hover {
	border-bottom-color: var(--stamp);
}

.masthead nav .btn {
	border-bottom: 0;
}

.btn {
	display: inline-block;
	font-family: var(--display);
	font-weight: 600;
	font-size: 0.9375rem;
	letter-spacing: -0.005em;
	padding: 0.6rem 1.15rem;
	border: 2px solid var(--ink);
	background: var(--ink);
	color: var(--paper);
	text-decoration: none;
	border-radius: 2px;
}

.btn:hover {
	background: var(--stamp);
	border-color: var(--stamp);
}

.btn--ghost {
	background: transparent;
	color: var(--ink);
}

.btn--ghost:hover {
	background: var(--ink);
	color: var(--paper);
	border-color: var(--ink);
}

/* -------------------------------------------------------------------- hero */

.hero {
	padding-block: clamp(2.5rem, 6vw, 5.5rem) clamp(2rem, 5vw, 4rem);
}

.hero__grid {
	display: grid;
	grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
	gap: clamp(2rem, 5vw, 4rem);
	align-items: start;
}

.hero h1 {
	font-family: var(--display);
	font-weight: 700;
	font-size: clamp(2.35rem, 1.4rem + 3.6vw, 4rem);
	line-height: 1.02;
	letter-spacing: -0.035em;
	margin: 0 0 1.25rem;
	text-wrap: balance;
}

.hero__lede {
	max-width: 44ch;
	margin: 0 0 1.75rem;
	font-size: 1.125rem;
	line-height: 1.6;
}

.hero__actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.75rem;
	margin-bottom: 2rem;
}

.hero__facts {
	border-top: 1px solid var(--rule);
	padding-top: 1.25rem;
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
	gap: 1.25rem;
	font-family: var(--display);
	font-size: 0.875rem;
	color: var(--steel);
}

.hero__facts b {
	display: block;
	font-size: 1.5rem;
	font-weight: 700;
	color: var(--ink);
	letter-spacing: -0.02em;
	font-variant-numeric: tabular-nums;
}

/* ------------------------------------------------------------ ledger sheet */

.sheet {
	border: 1px solid var(--rule);
	background: var(--paper);
	box-shadow: 0 1px 0 var(--rule);
	overflow: hidden;
}

.sheet__head {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.85rem 1rem;
	border-bottom: 2px solid var(--ink);
	font-family: var(--display);
}

.sheet__title {
	font-weight: 700;
	font-size: 0.9375rem;
	letter-spacing: -0.01em;
}

.sheet__meta {
	font-size: 0.8125rem;
	color: var(--steel);
	font-variant-numeric: tabular-nums;
}

.sheet table {
	width: 100%;
	border-collapse: collapse;
	font-family: var(--numeric);
	font-size: 0.875rem;
}

.sheet th {
	text-align: left;
	font-weight: 600;
	font-size: 0.75rem;
	color: var(--steel);
	padding: 0.5rem 1rem;
	border-bottom: 1px solid var(--rule);
}

.sheet th.num,
.sheet td.num {
	text-align: right;
	font-variant-numeric: tabular-nums;
}

.sheet td {
	padding: 0.5rem 1rem;
	border-bottom: 1px solid rgba(163, 179, 160, 0.45);
}

.sheet tbody tr:nth-child(odd) {
	background: var(--bar);
}

.sheet tbody tr.is-pending td {
	color: transparent;
}

.sheet .dr {
	color: var(--ink);
}

.sheet .cr {
	color: var(--stamp);
}

.sheet__foot {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.85rem 1rem;
	border-top: 2px solid var(--ink);
	font-family: var(--numeric);
	font-size: 0.875rem;
	font-variant-numeric: tabular-nums;
}

.sheet__totals span + span {
	margin-left: 1.25rem;
}

.stamp {
	font-family: var(--display);
	font-weight: 700;
	font-size: 0.8125rem;
	letter-spacing: 0.02em;
	color: var(--stamp);
	border: 2px solid var(--stamp);
	border-radius: 2px;
	padding: 0.2rem 0.55rem;
	transform: rotate(-3deg) scale(0.9);
	opacity: 0;
	transition: opacity 240ms ease-out, transform 240ms cubic-bezier(0.2, 1.4, 0.5, 1);
}

.stamp.is-set {
	opacity: 1;
	transform: rotate(-3deg) scale(1);
}

.sheet__note {
	padding: 0.75rem 1rem;
	border-top: 1px solid var(--rule);
	font-size: 0.875rem;
	color: var(--steel);
	background: rgba(220, 230, 212, 0.35);
}

/* ---------------------------------------------------------------- sections */

.band {
	padding-block: clamp(2.75rem, 6vw, 5rem);
	border-top: 1px solid var(--rule);
}

.band--bar {
	background: var(--bar);
}

.band h2 {
	font-family: var(--display);
	font-weight: 700;
	font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.25rem);
	letter-spacing: -0.028em;
	line-height: 1.1;
	margin: 0 0 0.75rem;
}

.band__intro {
	max-width: var(--measure);
	margin: 0 0 2.25rem;
}

/* ledger-styled data table used for modules and rules */

.register {
	width: 100%;
	border-collapse: collapse;
	font-size: 0.9375rem;
}

.register caption {
	text-align: left;
	font-family: var(--display);
	font-size: 0.875rem;
	color: var(--steel);
	padding-bottom: 0.6rem;
}

.register th {
	font-family: var(--display);
	font-size: 0.8125rem;
	font-weight: 600;
	color: var(--steel);
	text-align: left;
	padding: 0.55rem 0.9rem;
	border-bottom: 2px solid var(--ink);
}

.register td {
	padding: 0.7rem 0.9rem;
	border-bottom: 1px solid var(--rule);
	vertical-align: top;
}

.register tbody tr:nth-child(even) {
	background: rgba(220, 230, 212, 0.5);
}

.band--bar .register tbody tr:nth-child(even) {
	background: rgba(244, 245, 240, 0.55);
}

.register .entry {
	font-family: var(--numeric);
	font-size: 0.875rem;
}

.register .entry b {
	font-weight: 600;
}

.tag {
	font-family: var(--display);
	font-size: 0.75rem;
	font-weight: 600;
	padding: 0.15rem 0.45rem;
	border: 1px solid currentColor;
	border-radius: 2px;
	white-space: nowrap;
}

.tag--live {
	color: var(--stamp);
}

.tag--queued {
	color: var(--steel-soft);
}

/* build sequence — genuinely ordered, so it is numbered */

.sequence {
	list-style: none;
	margin: 0;
	padding: 0;
	counter-reset: phase;
	display: grid;
	gap: 0;
}

.sequence li {
	counter-increment: phase;
	display: grid;
	grid-template-columns: 3.25rem minmax(0, 1fr) auto;
	gap: 1rem;
	align-items: baseline;
	padding: 0.85rem 0;
	border-bottom: 1px solid var(--rule);
}

.sequence li::before {
	content: counter(phase, decimal-leading-zero);
	font-family: var(--numeric);
	font-weight: 700;
	font-size: 1.05rem;
	color: var(--steel-soft);
	font-variant-numeric: tabular-nums;
}

.sequence li[data-state="done"]::before {
	color: var(--stamp);
}

.sequence h3 {
	font-family: var(--display);
	font-size: 1rem;
	font-weight: 600;
	margin: 0 0 0.15rem;
	letter-spacing: -0.012em;
}

.sequence p {
	margin: 0;
	font-size: 0.9375rem;
	color: var(--steel);
	max-width: 58ch;
}

.sequence .weeks {
	font-family: var(--numeric);
	font-size: 0.8125rem;
	color: var(--steel);
	white-space: nowrap;
}

/* spec columns */

.specs {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
	gap: 0 clamp(1.5rem, 4vw, 3rem);
}

.specs section {
	padding-block: 1rem;
	border-top: 1px solid var(--rule);
}

.specs h3 {
	font-family: var(--display);
	font-size: 0.9375rem;
	font-weight: 600;
	margin: 0 0 0.6rem;
}

.specs ul {
	margin: 0;
	padding-left: 1.1rem;
	font-size: 0.9375rem;
	color: var(--steel);
}

.specs li {
	margin-bottom: 0.3rem;
}

/* closing call to action */

.close {
	background: var(--ink);
	color: var(--paper);
	padding-block: clamp(3rem, 7vw, 5.5rem);
}

.close h2 {
	font-family: var(--display);
	font-weight: 700;
	font-size: clamp(1.9rem, 1.3rem + 2.4vw, 3rem);
	letter-spacing: -0.032em;
	line-height: 1.05;
	margin: 0 0 1rem;
	max-width: 20ch;
}

.close p {
	max-width: 52ch;
	margin: 0 0 2rem;
	color: #cdd6cd;
}

.close .btn {
	background: var(--paper);
	color: var(--ink);
	border-color: var(--paper);
}

.close .btn:hover {
	background: var(--stamp);
	border-color: var(--stamp);
	color: var(--paper);
}

.close .btn--ghost {
	background: transparent;
	color: var(--paper);
	border-color: var(--steel-soft);
}

.close code {
	font-family: var(--numeric);
	font-size: 0.875rem;
	color: #cdd6cd;
}

/* ------------------------------------------------------------------ footer */

.colophon {
	border-top: 1px solid var(--rule);
	padding-block: 1.75rem;
	font-size: 0.875rem;
	color: var(--steel);
}

.colophon__inner {
	display: flex;
	flex-wrap: wrap;
	gap: 1rem 2rem;
	justify-content: space-between;
	align-items: baseline;
}

.colophon a {
	text-decoration-color: var(--rule);
	text-underline-offset: 3px;
}

/* ------------------------------------------------------------- narrow view */

@media (max-width: 880px) {
	.hero__grid {
		grid-template-columns: 1fr;
	}

	.masthead nav a:not(.btn) {
		display: none;
	}

	.sequence li {
		grid-template-columns: 2.5rem minmax(0, 1fr);
	}

	.sequence .weeks {
		grid-column: 2;
	}

	.register--scroll {
		display: block;
		overflow-x: auto;
	}
}

@media (prefers-reduced-motion: reduce) {
	.stamp {
		transition: none;
	}

	*,
	*::before,
	*::after {
		animation-duration: 0.001ms !important;
		transition-duration: 0.001ms !important;
	}
}