/* CDH keeps narrative short and makes the connected work visible. */
.cdh-visual { --cdh-green: #526c39; --cdh-soft: #e4eadc; }
.cdh-section { padding-block: clamp(55px,7vw,100px); }
.cdh-section-heading { margin-bottom: 35px; }
.cdh-section-heading .eyebrow { margin-bottom: 18px; color: #68517c; }
.cdh-section-heading h2 { font-size: clamp(32px,3.4vw,52px); line-height: 1.3; }
.cdh-caption { font-size: 14px; line-height: 1.8; color: #526247; margin-top: 18px; }
.cdh-icon { width: 30px; height: 30px; stroke: currentColor; stroke-width: 1.5; fill: none; flex: none; }
.cdh-intro { display: grid; grid-template-columns: .8fr 1.4fr; gap: 45px; align-items: center; padding-block: 50px 65px; }
.cdh-intro .eyebrow { color: #68517c; margin-bottom: 24px; }
.cdh-intro h1 { font-size: clamp(35px,3.9vw,62px); line-height: 1.3; }
.cdh-lead { font-size: 18px; color: #495841; margin-top: 24px; }
.cdh-intro .ax-actions { gap: 22px; }
.cdh-overview { background: var(--dark); color: #e7eddf; padding: 30px 22px 20px; }
.cdh-overview .system-stages { grid-template-columns: .7fr 1.6fr .7fr; gap: 22px; align-items: center; padding: 0; }
.cdh-overview .system-stage { padding: 18px 10px; text-align: center; }
.cdh-overview .system-stage h3 { font-size: 21px; margin-block: 14px; }
.cdh-overview .system-stage p { font-size: 14px; line-height: 1.8; margin: 0; padding: 0; border: 0; }
.cdh-overview .cdh-core { padding: 24px 14px; }
.cdh-overview .cdh-core h3 { font-size: 43px; margin: 12px 0 20px; }
.cdh-overview .cdh-core small { font-size: 12px; letter-spacing: 0; }
.cdh-domains { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 18px 10px; text-align: left; }
.cdh-domains b { display: block; font-size: 14px; font-weight: 600; color: #e4ecd9; margin: 0 0 4px; }
.cdh-domains span { display: block; font-size: 12.5px; color: #b7c5ad; line-height: 1.65; }
.cdh-overview figcaption { font-size: 13px; line-height: 1.8; color: #b8c9a9; padding-top: 22px; }
.cdh-overview .flow-replay { display: block; font-size: 13px; min-height: 44px; margin-bottom: 10px; }
.cdh-case-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 7%; align-items: start; }
.cdh-screen { margin: 0; min-width: 0; }
.cdh-screen>a { display: block; background: #e9edf0; border: 1px solid #bac4b0; }
.cdh-screen img { width: 100%; height: auto; aspect-ratio: 16/11; object-fit: cover; object-position: top; }
.cdh-screen figcaption { margin-top: 14px; line-height: 1.8; }
.cdh-screen figcaption b { display: block; font-size: 17px; font-weight: 600; }
.cdh-screen figcaption span { display: block; font-size: 13px; color: #56654c; margin-top: 4px; }
.cdh-route { border-top: 1px solid #aebba2; padding-block: 20px; }
.cdh-route h3 { font-size: 24px; margin-bottom: 18px; }
.cdh-route ol { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; padding: 0; margin: 0; list-style: none; }
.cdh-route li { position: relative; text-align: center; background: var(--cdh-soft); padding: 12px 3px; font-size: 14px; line-height: 1.6; }
.cdh-route li+li::before { content: '→'; position: absolute; right: 100%; width: 18px; color: #6b8058; }
.cdh-foundation { border-top: 1px solid #aebba2; padding-top: 20px; }
.cdh-foundation>span { font-size: 14px; color: #526247; }
.cdh-foundation ul { list-style: none; padding: 0; margin: 12px 0; display: flex; gap: 10px 18px; flex-wrap: wrap; font-size: 15px; }
.cdh-foundation .text-link { font-size: 14px; min-height: 44px; padding-top: 7px; }
.cdh-return { display: grid; grid-template-columns: 1fr 1fr; gap: 8%; align-items: center; }
.cdh-return .eyebrow { color: #536842; margin-bottom: 20px; }
.cdh-return h2 { font-size: clamp(30px,3vw,44px); }
.cdh-return-values { display: flex; align-items: center; gap: 28px; margin: 25px 0; }
.cdh-return-values div>span { display: block; font-size: 14px; color: #536842; }
.cdh-return-values strong { display: flex; align-items: baseline; gap: 7px; font-size: clamp(60px,6vw,88px); line-height: 1.2; font-weight: 600; letter-spacing: -.06em; }
.cdh-return-values strong small { font-size: 18px; letter-spacing: -.03em; white-space: nowrap; }
.cdh-return-values>span { font-size: 30px; color: #70855d; }
.cdh-return-values>div:last-child strong { color: var(--cdh-green); }
.cdh-evidence-route { display: flex; gap: 20px; flex-wrap: wrap; list-style: none; padding: 0; margin: 0; font-size: 16px; }
.cdh-evidence-route li+li::before { content: '→'; margin-right: 15px; color: #778963; }
.cdh-scale { margin-bottom: 32px; padding-bottom: 0; }
.cdh-scale .system-stages { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 40px; padding: 0; }
.cdh-visual .cdh-scale .system-stage { padding: 25px; background: #e9eee3; border-color: #aaba99; color: #34462b; }
.cdh-scale .cdh-icon { display: block; margin-bottom: 18px; }
.cdh-scale .system-stage small { display: block; font-size: 13px; color: #526741; letter-spacing: 0; }
.cdh-scale .system-stage h3 { font-size: 27px; margin: 12px 0; }
.cdh-scale .system-stage p { font-size: 16px; line-height: 1.8; border: 0; margin: 0; padding: 0; color: #465b37; }
.cdh-visual .cdh-scale .system-stage.flow-current { background: #dce8cf; border-color: #69884d; box-shadow: inset 3px 0 #69884d; }
.cdh-scale .map-wires path.on-route { stroke: #66824a; }
.cdh-scale .map-wires path.flow-trace { stroke: #46662d; filter: none; }
.cdh-scale .flow-packet { fill: #496b30; filter: none; }
.cdh-scale figcaption { font-size: 14px; line-height: 1.9; color: #536547; padding-top: 22px; }
.cdh-scale .flow-replay { color: #3f5b2d; border-color: #7e946a; font-size: 13px; min-height: 44px; }
.cdh-scale .flow-replay:hover { background: #dce8cf; }
.cdh-metric-intro { font-size: 14px; line-height: 1.9; color: #526247; border-top: 1px solid var(--line); padding-top: 24px; }
.cdh-metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 35px; margin-block: 20px; }
.cdh-metrics>div+div { border-left: 1px solid var(--line); padding-left: 35px; }
.cdh-metrics span { display: block; font-size: 14px; color: #526247; }
.cdh-metrics strong { display: block; font-size: clamp(32px,4vw,54px); font-weight: 600; letter-spacing: -.05em; color: #3a532b; line-height: 1.4; margin-block: 8px; }
.cdh-metrics p,.cdh-impact-limit { font-size: 14px; line-height: 1.9; color: #526247; }
.cdh-calculation { border-block: 1px solid var(--line); margin-top: 22px; padding-block: 5px; }
.cdh-calculation summary { cursor: pointer; min-height: 48px; display: list-item; align-content: center; font-size: 15px; font-weight: 600; }
.cdh-calculation .impact-assumptions { max-width: 750px; margin: 14px 0 20px; }
.cdh-calculation>p { font-size: 14px; line-height: 1.9; color: #526247; margin-bottom: 18px; max-width: 900px; }
.cdh-calculation a { text-decoration: underline; text-underline-offset: 4px; }
.cdh-visual .ink .cdh-section-heading .eyebrow { color: #c8b1dc; }
.cdh-future { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 5%; }
.cdh-future>div { display: flex; align-items: center; gap: 18px; border-top: 1px solid #718164; padding-top: 24px; }
.cdh-future h3 { font-size: 25px; line-height: 1.5; }
.cdh-future .cdh-icon { color: #c2d8a5; }
.cdh-visual .ink .cdh-caption { color: #bbc9b0; margin-top: 28px; }
.cdh-contact { display: flex; justify-content: space-between; align-items: center; gap: 35px; }
.cdh-contact h2 { font-size: clamp(32px,3.8vw,54px); }
.cdh-contact>div { display: flex; align-items: center; gap: 25px; flex-wrap: wrap; }
@media(max-width:1100px) {
 .cdh-intro { grid-template-columns: 1fr; gap: 35px; }
 .cdh-overview { max-width: 900px; width: 100%; }
 .cdh-overview .system-stages { grid-template-columns: .7fr 1.6fr .7fr; }
}
@media(max-width:800px) {
 .cdh-case-grid,.cdh-return { grid-template-columns: 1fr; gap: 35px; }
 .cdh-screen { max-width: 750px; }
 .cdh-scale .system-stages { gap: 25px; }
 .cdh-visual .cdh-scale .system-stage { padding: 20px 16px; }
 .cdh-scale .system-stage h3 { font-size: 23px; }
 .cdh-future { grid-template-columns: 1fr; gap: 20px; }
 .cdh-future>div { padding-top: 18px; }
 .cdh-contact { display: block; }
 .cdh-contact>div { margin-top: 25px; }
}
@media(max-width:650px) {
 .cdh-intro { padding-block: 24px 45px; gap: 28px; }
 .cdh-intro h1 { font-size: clamp(33px,9vw,44px); }
 .cdh-lead { font-size: 16px; margin-top: 20px; }
 .cdh-caption { font-size: 13px; }
 .cdh-overview { padding: 22px 16px 18px; }
 .cdh-overview .system-stages { grid-template-columns: 1fr; gap: 27px; }
 .cdh-overview .system-stage { padding: 15px; }
 .cdh-overview .system-stage h3 { margin-block: 8px; font-size: 23px; }
 .cdh-overview .system-stage p { font-size: 15px; }
 .cdh-overview .cdh-icon { display: none; }
 .cdh-overview .cdh-core { padding: 20px; }
 .cdh-overview .cdh-core h3 { font-size: 38px; margin-block: 8px 18px; }
 .cdh-domains { gap: 15px 12px; }
 .cdh-domains b { font-size: 15px; }
 .cdh-domains span { font-size: 13px; }
 .cdh-section-heading h2 { font-size: 32px; }
 .cdh-route h3 { font-size: 24px; }
 .cdh-route li { font-size: 13px; }
 .cdh-route ol { gap: 16px; }
 .cdh-route li+li::before { width: 16px; }
 .cdh-return-values { gap: 20px; }
 .cdh-return-values strong { font-size: 60px; }
 .cdh-return-values strong small { font-size: 16px; }
 .cdh-evidence-route { gap: 10px; font-size: 14px; }
 .cdh-evidence-route li+li::before { margin-right: 10px; }
 .cdh-scale .system-stages { grid-template-columns: 1fr; gap: 28px; }
 .cdh-visual .cdh-scale .system-stage { padding: 20px; }
 .cdh-scale .cdh-icon { float: right; margin: 0; }
 .cdh-scale .system-stage h3 { font-size: 25px; }
 .cdh-scale figcaption { font-size: 14px; }
 .cdh-metrics { grid-template-columns: 1fr; gap: 20px; }
 .cdh-metrics>div+div { border-left: 0; border-top: 1px solid var(--line); padding: 20px 0 0; }
 .cdh-metrics strong { font-size: 38px; }
 .cdh-future h3 { font-size: 24px; }
}