:root {
	--machine-active: #12d8ff;
	--machine-line: #31596e;
	--machine-blocked: #ff4d4d;
}
.approach-stage {
	scroll-margin-top: 9rem;
}
.approach-intro {
	padding: clamp(6rem, 9vh, 8rem) 0 clamp(4rem, 7vh, 6rem);
}
.approach-intro__grid {
	display: grid;
	grid-template-columns: minmax(0, 1.05fr) minmax(18rem, 0.75fr);
	gap: clamp(2rem, 6vw, 7rem);
	align-items: end;
}
.approach-intro h1 {
	max-width: 13ch;
	margin: 0;
	font-size: clamp(3.5rem, 5.4vw, 5.25rem);
	line-height: 0.96;
	letter-spacing: -0.055em;
}
.approach-intro__copy {
	max-width: 39rem;
	color: var(--color-text-muted);
}
.approach-intro__system-link {
	display: inline-flex;
	gap: 0.65rem;
	align-items: center;
	margin-top: 1.7rem;
	color: var(--machine-active);
	font: 700 0.72rem/1 var(--font-display);
	letter-spacing: 0.13em;
	text-decoration: none;
	text-transform: uppercase;
}
.approach-intro__system-link span {
	width: 1.25rem;
	height: 1px;
	background: var(--machine-active);
	box-shadow: 0 0 0.7rem var(--machine-active);
}
.approach-trajectory {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 1rem 2rem;
	align-items: center;
	padding-block: 1.25rem 3.5rem;
	border-top: 1px solid color-mix(in srgb, var(--machine-line) 55%, transparent);
}
.approach-trajectory__label,
.approach-step__id {
	color: var(--machine-active);
	font: 700 0.68rem/1 var(--font-display);
	letter-spacing: 0.13em;
	text-transform: uppercase;
}
.approach-trajectory ol {
	display: flex;
	flex-wrap: wrap;
	gap: 0.7rem 1.35rem;
	margin: 0;
	padding: 0;
	color: var(--color-text-muted);
	list-style: none;
	font: 600 0.78rem/1.3 var(--font-display);
}
.approach-story {
	position: relative;
	padding: clamp(3rem, 6vw, 6rem) 0;
	overflow: clip;
	background:
		radial-gradient(
			circle at 50% 45%,
			color-mix(in srgb, var(--machine-active) 8%, transparent),
			transparent 37rem
		),
		linear-gradient(180deg, #03101a, #02080d);
}
.approach-story:before {
	position: absolute;
	inset: 0;
	opacity: 0.34;
	background-image:
		linear-gradient(
			color-mix(in srgb, var(--machine-line) 28%, transparent) 1px,
			transparent 1px
		),
		linear-gradient(
			90deg,
			color-mix(in srgb, var(--machine-line) 28%, transparent) 1px,
			transparent 1px
		);
	background-size: 4rem 4rem;
	content: '';
	pointer-events: none;
}
.approach-story > .page-shell {
	position: relative;
	z-index: 1;
}
.approach-section-header {
	max-width: 48rem;
	margin-bottom: 2rem;
}
.approach-section-header h2 {
	margin: 0.5rem 0 0.85rem;
	font-size: clamp(2.4rem, 5vw, 4.75rem);
	line-height: 0.96;
	letter-spacing: -0.05em;
}
.approach-section-header > p:last-child {
	color: var(--color-text-muted);
}
/* One machine / six states: the index and editorial panels share one machine
   coordinate system; stage selection changes emphasis, not machine geometry. */
.approach-process {
	--process-machine-width: clamp(28rem, 34vw, 31rem);
	--process-pipe-height: clamp(7.75rem, 9.5vw, 9.75rem);
	--process-axis-y: 53%;
	position: relative;
	isolation: isolate;
}
.process-index {
	position: relative;
	z-index: 8;
	display: grid;
	grid-template-columns: repeat(6, minmax(0, 1fr));
	width: min(52rem, 72vw);
	margin: 0 auto 1.5rem;
	padding: 0;
	list-style: none;
}
.process-index a {
	display: grid;
	min-height: 2.65rem;
	place-items: center;
	border-bottom: 1px solid
		color-mix(in srgb, var(--machine-line) 70%, transparent);
	color: #7f99aa;
	font: 700 0.57rem/1 var(--font-display);
	letter-spacing: 0.06em;
	text-align: center;
	text-decoration: none;
	text-transform: uppercase;
}
.process-index a[aria-current='step'] {
	border-color: var(--machine-active);
	color: var(--machine-active);
	box-shadow:
		inset 0 -2px 0 var(--machine-active),
		0 0.35rem 0.8rem color-mix(in srgb, var(--machine-active) 14%, transparent);
}
.process-index a:focus-visible,
.approach-intro__system-link:focus-visible {
	outline: 3px solid var(--color-focus);
	outline-offset: 3px;
}
/* Only component readiness enables the shared editorial frame and hidden panels.
   Without it, all stages remain in flow; mobile keeps the same readiness boundary. */
.approach-process__frame {
	position: relative;
}
.approach-process[data-enhanced="true"] .approach-process__frame {
	display: grid;
	grid-template-rows: minmax(17rem, 36%) minmax(27rem, 64%);
	height: clamp(44rem, 82svh, 48rem);
	overflow: clip;
}
.approach-process__editorial {
	position: relative;
	z-index: 5;
}
.approach-stage {
	display: grid;
	grid-template-columns: minmax(0, 1fr) minmax(18rem, 23rem);
	column-gap: clamp(5rem, 9vw, 10rem);
	align-items: end;
	padding: clamp(2rem, 4vh, 3rem) clamp(3.75rem, 7vw, 7.5rem)
		clamp(2rem, 4vh, 2.75rem);
}
.approach-stage + .approach-stage {
	border-top: 1px solid color-mix(in srgb, var(--machine-line) 35%, transparent);
}
.approach-stage h3 {
	max-width: 10ch;
	margin: 0;
	font-size: clamp(3.5rem, 5vw, 5rem);
	line-height: 0.94;
	letter-spacing: -0.055em;
}
.approach-stage__description {
	justify-self: end;
	width: min(100%, 23rem);
	margin: 0;
	color: #afc2ce;
	font-size: clamp(1rem, 1.15vw, 1.15rem);
	line-height: 1.6;
}
.approach-process[data-enhanced="true"] .approach-process__editorial .approach-stage {
	position: absolute;
	inset: 0;
	opacity: 0;
	visibility: hidden;
	pointer-events: none;
	border: 0;
}
.approach-process[data-enhanced="true"] .approach-process__editorial .approach-stage.is-active {
	opacity: 1;
	visibility: visible;
	pointer-events: auto;
}
.approach-process__machine {
	position: relative;
	min-height: 27rem;
	overflow: clip;
	isolation: isolate;
}
.approach-machine {
	position: absolute;
	z-index: 3;
	top: var(--process-axis-y);
	left: 50%;
	width: var(--process-machine-width);
	aspect-ratio: 1/0.78;
	transform: translate(-50%, -50%);
	pointer-events: none;
}
.approach-machine__pipe {
	position: absolute;
	z-index: 1;
	top: var(--process-axis-y);
	width: max(25rem, 45vw);
	height: var(--process-pipe-height);
	overflow: hidden;
	transform: translateY(-50%);
}
.approach-machine__pipe img {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
}
.approach-machine__pipe--input {
	right: calc(50% + (var(--process-machine-width) * 0.3));
}
.approach-machine__pipe--input img {
	object-position: right center;
}
.approach-machine__pipe--flow {
	left: calc(50% + (var(--process-machine-width) * 0.3));
}
.approach-machine__pipe--flow img {
	object-position: left center;
}
.approach-machine__material {
	position: absolute;
	z-index: 3;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	overflow: clip;
}
.approach-machine__valve {
	display: block;
	width: 100%;
	height: auto;
	object-fit: contain;
}
/* Static physicality comes from the valve images. Functional SVG paths remain
   in the shared coordinate system but contribute no visible static geometry. */
.approach-machine__overlay {
	position: absolute;
	z-index: 4;
	top: 0;
	left: 0;
	width: 100%;
	height: auto;
	aspect-ratio: 1;
	overflow: visible;
	visibility: hidden;
	opacity: 0;
}
.approach-machine__overlay path {
	fill: none;
	stroke: var(--machine-active);
	stroke-width: 4;
	stroke-opacity: 0;
	vector-effect: non-scaling-stroke;
}
.machine-reactor,
.machine-return,
.machine-route {
	opacity: 0;
}
/* Material profiles distinguish the six semantic states without relocating assets. */
.approach-process[data-stage='input'] .approach-machine__pipe--input {
	opacity: 1;
	filter: brightness(1.1) contrast(1.05);
}
.approach-process[data-stage='input'] .approach-machine__valve {
	opacity: 0.68;
}
.approach-process[data-stage='input'] .approach-machine__pipe--flow {
	opacity: 0.26;
	filter: brightness(0.78) saturate(0.72);
}
.approach-process[data-stage='control'] .approach-machine__pipe--input,
.approach-process[data-stage='control'] .approach-machine__pipe--flow {
	opacity: 0.65;
}
.approach-process[data-stage='control'] .approach-machine__valve {
	opacity: 1;
	filter: brightness(1.06) contrast(1.04);
}
.approach-process[data-stage='flow'] .approach-machine__pipe--input {
	opacity: 0.25;
	filter: brightness(0.8) saturate(0.75);
}
.approach-process[data-stage='flow'] .approach-machine__valve {
	opacity: 0.6;
}
.approach-process[data-stage='flow'] .approach-machine__pipe--flow {
	opacity: 0.94;
	filter: brightness(1.12) contrast(1.08);
}
.approach-process[data-stage='transmission'] .approach-machine__pipe--input {
	opacity: 0.22;
	filter: brightness(0.72) saturate(0.68);
}
.approach-process[data-stage='transmission'] .approach-machine__valve {
	opacity: 0.52;
	filter: brightness(0.9) contrast(1.03);
}
.approach-process[data-stage='transmission'] .approach-machine__pipe--flow {
	opacity: 1;
	filter: brightness(1.28) contrast(1.16) saturate(1.12);
}
.approach-process[data-stage='inspection'] .approach-machine__pipe--input {
	opacity: 0.2;
	filter: brightness(0.7) saturate(0.65);
}
.approach-process[data-stage='inspection'] .approach-machine__valve {
	opacity: 1;
	filter: brightness(1.13) contrast(1.1) saturate(1.06);
}
.approach-process[data-stage='inspection'] .approach-machine__pipe--flow {
	opacity: 0.32;
	filter: brightness(0.76) saturate(0.7);
}
.approach-process[data-stage='return'] .approach-machine__pipe--input,
.approach-process[data-stage='return'] .approach-machine__pipe--flow {
	opacity: 0.86;
	filter: brightness(1.1) contrast(1.07);
}
.approach-process[data-stage='return'] .approach-machine__valve {
	opacity: 0.54;
	filter: brightness(0.92) contrast(1.02);
}
.approach-capabilities,
.approach-practice,
.approach-closing {
	padding-block: clamp(4rem, 8vw, 8rem);
}
.approach-capability-list,
.approach-tech,
.approach-practice__grid {
	display: grid;
	grid-template-columns: repeat(2, minmax(0, 1fr));
	gap: 1rem;
}
.approach-capability-list article,
.approach-tech article {
	display: grid;
	grid-template-columns: auto 1fr;
	gap: 1rem;
	padding: 1.25rem;
	border: 1px solid var(--color-border);
}
.approach-capability-list article > span {
	color: var(--machine-active);
	font: 700 1rem/1 var(--font-display);
}
.approach-tech {
	grid-template-columns: repeat(3, minmax(0, 1fr));
	margin-top: 1rem;
}
.approach-tech article {
	display: block;
}
.approach-practice {
	background: var(--color-surface);
}
.approach-closing {
	text-align: center;
}
.approach-closing > .page-shell {
	max-width: 56rem;
}
.approach-machine__port-label {
	position: absolute;
	z-index: 5;
	top: clamp(1.5rem, 3vh, 2.25rem);
	display: grid;
	gap: 0.25rem;
	color: var(--machine-active);
	font: 700 0.62rem/1 var(--font-display);
	letter-spacing: 0.12em;
	text-transform: uppercase;
}
.approach-machine__port-label strong {
	color: #dff6ff;
	font-size: clamp(1.2rem, 1.7vw, 1.8rem);
	letter-spacing: -0.04em;
}
.approach-machine__port-label--input {
	left: clamp(3.5rem, 7vw, 7rem);
}
.approach-machine__port-label--flow {
	right: clamp(3.5rem, 7vw, 7rem);
	text-align: right;
}
@media (max-width: 74.99rem) {
	.approach-stage {
		column-gap: 2rem;
		padding-inline: clamp(2rem, 5vw, 4rem);
	}
	.approach-stage h3 {
		font-size: clamp(2.5rem, 4.4vw, 3.8rem);
	}
	.approach-process__machine .approach-machine {
		width: clamp(24rem, 42vw, 27rem);
	}
}
@media (max-width: 47.99rem) {
	.approach-intro__grid,
	.approach-capability-list,
	.approach-tech,
	.approach-practice__grid {
		grid-template-columns: 1fr;
	}
	.approach-trajectory {
		grid-template-columns: 1fr;
	}
	.approach-story {
		padding-block: 3.5rem;
	}
	.process-index {
		grid-template-columns: repeat(3, minmax(0, 1fr));
		width: 100%;
		margin-bottom: 1.5rem;
	}
	.process-index a {
		min-height: 2.3rem;
		font-size: 0.55rem;
	}
	.approach-process[data-enhanced="true"] .approach-process__frame {
		display: grid;
		grid-template-rows: auto auto;
		height: auto;
		overflow: visible;
	}
	.approach-process__editorial {
		position: relative;
		display: block;
	}
	.approach-stage {
		display: block;
		padding: 1.5rem 0;
		border-top: 1px solid
			color-mix(in srgb, var(--machine-line) 35%, transparent);
	}
	.approach-process[data-enhanced="true"] .approach-process__editorial .approach-stage {
		position: absolute;
		inset: 0;
		opacity: 0;
		visibility: hidden;
		pointer-events: none;
		border: 0;
	}
	.approach-process[data-enhanced="true"] .approach-process__editorial .approach-stage.is-active {
		position: relative;
		inset: auto;
		opacity: 1;
		visibility: visible;
		pointer-events: auto;
		border-top: 1px solid
			color-mix(in srgb, var(--machine-line) 35%, transparent);
	}
	.approach-stage h3 {
		margin-top: 0.55rem;
		font-size: clamp(2.55rem, 12vw, 3.55rem);
	}
	.approach-stage__description {
		justify-self: auto;
		width: 100%;
		max-width: 34rem;
		margin-top: 0.85rem;
	}
	.approach-process__machine {
		display: grid;
		grid-template-columns: 1fr 1fr;
		gap: 0.6rem 1rem;
		min-height: 0;
		padding-top: 1.5rem;
	}
	.approach-process__machine .approach-machine {
		position: relative;
		grid-column: 1/-1;
		top: auto;
		left: auto;
		width: min(22rem, 88vw);
		margin: 0 auto;
		transform: none;
	}
	.approach-process__machine .approach-machine__pipe {
		display: none;
	}
	.approach-process__machine .approach-machine__port-label {
		position: static;
		font-size: 0.52rem;
	}
	.approach-machine__port-label--input {
		justify-self: start;
	}
	.approach-machine__port-label--flow {
		justify-self: end;
	}
	.approach-machine__material {
		height: 100%;
	}
}
@media (prefers-reduced-motion: reduce) {
	.approach-stage {
		transition: none;
	}
	.approach-machine__overlay path {
		stroke-dasharray: none !important;
	}
}