:root {
  --diagnose-ink: #101114;
  --diagnose-paper: #f2f0eb;
  --diagnose-muted: #6d6b66;
  --diagnose-line: rgba(16, 17, 20, 0.22);
  --diagnose-soft: rgba(16, 17, 20, 0.055);
}

html {
  scroll-behavior: smooth;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 1rem;
  z-index: 500;
  padding: 0.75rem 1rem;
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
  font: 700 0.78rem/1.2 Arial, Helvetica, sans-serif;
  text-decoration: none;
  transform: translateY(-120%);
}

.skip-link:focus {
  transform: translateY(1rem);
}

body[data-experience="diagnose"] {
  background: var(--color-paper) !important;
  color: var(--color-ink) !important;
}

body[data-experience="diagnose"] .site-header {
  background: var(--color-backdrop) !important;
  border-bottom-color: var(--color-rule) !important;
}

.diagnose-hero {
  display: grid;
  grid-template-columns: minmax(32rem, 0.95fr) minmax(34rem, 1.05fr);
  gap: clamp(2rem, 4vw, 4rem);
  align-items: center;
  min-height: auto;
  padding: clamp(6rem, 8vw, 7.5rem) 0 clamp(2.75rem, 5vw, 4.5rem);
}

.diagnose-kicker,
.decision-route figcaption span,
.route-object > span,
.route-output > span {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.35;
  text-transform: uppercase;
}

.diagnose-kicker {
  margin: 0 0 1.25rem;
  color: var(--diagnose-muted);
}

.hero-copy h1 {
  max-width: 18ch;
  margin: 0;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: clamp(3.25rem, 4.2vw, 4.35rem);
  font-weight: 400;
  letter-spacing: -0.05em;
  line-height: 0.94;
}

.hero-lede {
  max-width: 34rem;
  margin: 1.35rem 0 0;
  font-size: clamp(1.04rem, 1.3vw, 1.18rem);
  line-height: 1.48;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.hero-actions .diagnose-cta {
  border-color: var(--color-ink);
  background: var(--color-ink);
  color: var(--color-paper);
}

.hero-actions .diagnose-cta:hover {
  background: transparent;
  color: var(--color-ink);
}

.diagnose-language-link {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--color-ink-soft);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  text-underline-offset: 0.3em;
}

.diagnose-language-link:hover {
  color: var(--color-ink);
}

.diagnose-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.85rem 1.2rem;
  border: 1px solid var(--diagnose-ink);
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.diagnose-cta:hover {
  background: transparent;
  color: var(--diagnose-ink);
  transform: translateY(-2px);
}

.diagnose-cta:focus-visible,
.route-controls button:focus,
.route-controls button:focus-visible {
  outline: 3px solid var(--diagnose-ink);
  outline-offset: 4px;
}

.decision-route {
  position: relative;
  margin: 0;
  padding: clamp(1.15rem, 2.4vw, 2rem);
  border: 1px solid var(--diagnose-ink);
  background: var(--diagnose-paper);
  color: var(--diagnose-ink);
}

.decision-route::before {
  position: absolute;
  inset: 0.45rem -0.45rem -0.45rem 0.45rem;
  z-index: -1;
  border: 1px solid var(--diagnose-ink);
  content: "";
}

.decision-route figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--diagnose-line);
  color: var(--diagnose-ink) !important;
}

.decision-route figcaption span,
.decision-route .route-caption span {
  color: var(--diagnose-muted) !important;
}

.decision-route figcaption strong {
  max-width: 20rem;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.86rem;
  line-height: 1.35;
  text-align: right;
}

.route-canvas {
  display: grid;
  grid-template-columns: minmax(8.5rem, 0.9fr) 2.5rem minmax(10rem, 1.05fr) 2.5rem minmax(11rem, 1.1fr);
  grid-template-rows: auto auto;
  align-items: stretch;
  gap: 1rem 0;
  min-height: 22rem;
  padding: 1.25rem 0 1rem;
}

.route-object {
  position: relative;
  border: 1px solid var(--diagnose-line);
  background: var(--diagnose-paper);
  transition: transform 280ms ease, border-color 280ms ease, background-color 280ms ease;
}

.route-object::after {
  position: absolute;
  inset: 0;
  border: 0 solid var(--diagnose-ink);
  pointer-events: none;
  content: "";
  transition: border-width 180ms ease;
}

.route-object > svg {
  width: 2.3rem;
  height: 2.3rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
}

.route-request {
  grid-column: 1;
  grid-row: 1;
  align-self: center;
  min-height: 11rem;
  padding: 1.25rem;
}

.route-request > span,
.route-complete > span,
.route-review > span {
  display: block;
  margin-top: 1.7rem;
  color: var(--diagnose-muted);
}

.route-request strong,
.route-complete strong,
.route-review strong {
  display: block;
  margin-top: 0.45rem;
  color: var(--diagnose-ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.05;
}

.route-request small,
.route-review small {
  display: block;
  margin-top: 0.75rem;
  color: var(--diagnose-muted);
  font-size: 0.72rem;
  line-height: 1.4;
}

.route-link {
  position: relative;
  grid-column: 2;
  grid-row: 1;
  align-self: center;
  height: 1px;
  background: var(--diagnose-line);
  overflow: hidden;
}

.route-link span,
.route-split i {
  position: absolute;
  inset: 0 auto 0 0;
  width: 45%;
  background: var(--diagnose-ink);
  opacity: 0;
}

.route-ai {
  overflow: hidden;
  grid-column: 3;
  grid-row: 1;
  align-self: center;
  min-height: 15rem;
  padding: 1.25rem;
  border-color: var(--diagnose-ink);
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
  opacity: 1;
}

.route-ai::before {
  position: absolute;
  inset: 0 0 auto;
  height: 1px;
  background: rgba(242, 240, 235, 0.42);
  content: "";
  pointer-events: none;
  transform: translateY(0);
}

.ai-mark {
  position: relative;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
}

.ai-mark i {
  position: absolute;
  top: 0.2rem;
  right: 0.2rem;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: currentColor;
}

.route-ai > span {
  display: block;
  margin-top: 1.1rem;
  color: rgba(242, 240, 235, 0.68);
}

.route-ai-title {
  display: block;
  margin-top: 0.35rem;
  color: var(--diagnose-paper);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 1.05rem;
  line-height: 1.2;
}

.ai-activity {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.25rem;
  margin-top: 0.85rem;
}

.ai-activity i {
  height: 0.18rem;
  background: rgba(242, 240, 235, 0.28);
}

.ai-activity i:first-child {
  background: var(--diagnose-paper);
}

.route-ai dl {
  margin: 1rem 0 0;
}

.route-ai dl div {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.42rem 0;
  border-top: 1px solid rgba(242, 240, 235, 0.2);
  font-size: 0.72rem;
}

.route-ai dt,
.route-ai dd {
  margin: 0;
}

.route-ai dd {
  color: rgba(242, 240, 235, 0.68);
}

.route-ai .is-missing dd {
  color: var(--diagnose-paper);
  font-weight: 700;
}

.route-ai-handoff {
  display: block;
  margin-top: 0.75rem;
  color: rgba(242, 240, 235, 0.72);
  font-size: 0.68rem;
  line-height: 1.35;
}

.route-split {
  position: relative;
  grid-column: 4;
  grid-row: 1;
  align-self: stretch;
  margin-block: 3rem;
  border-left: 1px solid var(--diagnose-line);
}

.route-split::before,
.route-split::after {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--diagnose-line);
  content: "";
}

.route-split::before { top: 0; }
.route-split::after { bottom: 0; }

.route-split span {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background: var(--diagnose-ink);
  opacity: 0;
  transform: scaleY(0);
  transform-origin: top;
}

.route-split i {
  top: auto;
  bottom: 0;
  width: 100%;
  height: 1px;
}

.route-branches {
  display: grid;
  grid-column: 5;
  grid-row: 1;
  gap: 0.75rem;
}

.route-complete,
.route-review {
  min-height: 7.35rem;
  padding: 1rem 1rem 1rem 4rem;
}

.route-complete > svg,
.route-review > svg {
  position: absolute;
  top: 1rem;
  left: 1rem;
  width: 2rem;
  height: 2rem;
}

.route-complete > span,
.route-review > span {
  margin-top: 0;
}

.route-output {
  display: grid;
  grid-column: 1 / -1;
  grid-row: 2;
  grid-template-columns: 1.15fr repeat(3, 1fr);
  gap: 0;
  border: 1px solid var(--diagnose-line);
  transition: border-color 280ms ease, background-color 280ms ease;
}

.route-output > span,
.route-output > div {
  padding: 0.9rem 1rem;
}

.route-output > span {
  align-self: center;
}

.route-output > div {
  border-left: 1px solid var(--diagnose-line);
}

.route-output strong,
.route-output p {
  display: block;
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.35;
}

.route-output strong {
  color: var(--diagnose-ink);
}

.route-output p {
  margin-top: 0.25rem;
  color: var(--diagnose-muted);
}

.route-canvas[data-route-active="0"] [data-route-node="0"],
.route-canvas[data-route-active="1"] [data-route-node="1"],
.route-canvas[data-route-active="2"] [data-route-node="2"],
.route-canvas[data-route-active="3"] [data-route-node="3"],
.route-canvas[data-route-active="4"] [data-route-node="4"] {
  border-color: var(--diagnose-ink);
  background: #fffefb;
  opacity: 1;
  transform: translateY(-3px);
}

.route-canvas[data-route-active="1"] [data-route-node="1"] {
  border-color: var(--diagnose-ink);
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
  box-shadow: 0 0 0 4px rgba(16, 17, 20, 0.16);
  transform: translateY(-4px) scale(1.015);
}

.route-canvas[data-route-active="1"] .route-ai::before {
  animation: ai-scan 1.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.route-canvas[data-route-active="1"] .ai-activity i {
  animation: ai-activity 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.route-canvas[data-route-active="1"] .ai-activity i:nth-child(2) { animation-delay: 120ms; }
.route-canvas[data-route-active="1"] .ai-activity i:nth-child(3) { animation-delay: 240ms; }
.route-canvas[data-route-active="1"] .ai-activity i:nth-child(4) { animation-delay: 360ms; }

@keyframes ai-scan {
  from { transform: translateY(0); }
  to { transform: translateY(18rem); }
}

@keyframes ai-activity {
  from { background: rgba(242, 240, 235, 0.28); transform: scaleX(0.3); transform-origin: left; }
  to { background: var(--diagnose-paper); transform: scaleX(1); transform-origin: left; }
}

.route-canvas[data-route-active="0"] [data-route-node="0"]::after,
.route-canvas[data-route-active="1"] [data-route-node="1"]::after,
.route-canvas[data-route-active="2"] [data-route-node="2"]::after,
.route-canvas[data-route-active="3"] [data-route-node="3"]::after {
  border-width: 1px;
}

.route-canvas[data-route-active="1"] .route-link span,
.route-canvas[data-route-active="2"] .route-split span,
.route-canvas[data-route-active="3"] .route-split span,
.route-canvas[data-route-active="3"] .route-split i {
  opacity: 1;
  animation: route-travel 1.1s ease both;
}

.route-canvas[data-route-active="2"] .route-split span,
.route-canvas[data-route-active="3"] .route-split span {
  transform: scaleY(1);
}

@keyframes route-travel {
  from { transform: translateX(-100%); }
  to { transform: translateX(220%); }
}

.route-split span {
  animation-name: none !important;
}

.route-caption {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1rem;
  min-height: 5.2rem;
  padding: 1rem 0;
  border-top: 1px solid var(--diagnose-line);
}

.route-caption > span {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.route-caption strong,
.route-caption p {
  display: block;
  margin: 0;
}

.route-caption strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1rem;
  font-weight: 400;
}

.route-caption p {
  max-width: 38rem;
  margin-top: 0.3rem;
  color: var(--diagnose-muted);
  font-size: 0.76rem;
  line-height: 1.4;
}

.route-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.route-controls button {
  min-width: 2.3rem;
  min-height: 2.3rem;
  border: 1px solid var(--diagnose-ink);
  background: transparent;
  color: var(--diagnose-ink);
  cursor: pointer;
  font: 700 0.72rem/1 Arial, Helvetica, sans-serif;
}

.route-controls button:hover {
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
}

.route-steps {
  display: flex;
  flex: 1;
  gap: 0.35rem;
}

.route-steps button {
  min-width: 1.9rem;
  min-height: 0.6rem;
  border: 0;
  border-bottom: 1px solid var(--diagnose-line);
}

.route-steps button.is-active {
  border-bottom-width: 3px;
  border-bottom-color: var(--diagnose-ink);
}

.diagnose-section,
.contact-panel {
  display: grid;
  grid-template-columns: minmax(16rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2.5rem, 6vw, 6rem);
  padding: clamp(3rem, 5vw, 4.5rem) 0;
  border-top: 1px solid var(--color-rule);
}

.ai-boundary {
  background: var(--diagnose-paper);
  box-shadow: 0 0 0 100vmax var(--diagnose-paper);
  color: var(--diagnose-ink);
  clip-path: inset(0 -100vmax);
}

.ai-boundary,
.contact-panel,
.decision-sheet {
  --color-ink: var(--diagnose-ink);
  --color-ink-soft: var(--diagnose-muted);
  --color-rule: var(--diagnose-line);
}

.section-heading h2,
.fit-stop h2,
.contact-panel h2 {
  max-width: 12ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(2.5rem, 5vw, 5.2rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 0.98;
}

.section-heading > p:last-child {
  max-width: 31rem;
  margin: 1.5rem 0 0;
  color: var(--diagnose-muted);
  font-size: 1rem;
  line-height: 1.55;
}

.boundary-ledger,
.engagement-spec {
  margin: 0;
}

.boundary-ledger > div,
.engagement-spec > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.38fr) 1fr;
  gap: 1.5rem;
  padding: 1.2rem 0;
  border-top: 1px solid var(--diagnose-line);
}

.boundary-ledger > div:last-child,
.engagement-spec > div:last-child {
  border-bottom: 1px solid var(--diagnose-line);
}

.boundary-ledger dt,
.engagement-spec dt {
  font: 700 0.75rem/1.35 Arial, Helvetica, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.boundary-ledger dd,
.engagement-spec dd {
  margin: 0;
  line-height: 1.5;
}

.engagement {
  --diagnose-ink: var(--color-ink);
  --diagnose-line: var(--color-rule);
  --diagnose-muted: var(--color-ink-soft);
  grid-template-columns: 1fr;
  gap: 3rem;
}

.operator-proof,
.fit-stop {
  --diagnose-ink: var(--color-ink);
  --diagnose-line: var(--color-rule);
  --diagnose-muted: var(--color-ink-soft);
}

.engagement .section-heading {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: clamp(2.5rem, 8vw, 8rem);
}

.engagement .section-heading .diagnose-kicker {
  grid-column: 1;
}

.engagement .section-heading h2,
.engagement .section-heading > p:last-child {
  grid-column: 2;
}

.engagement-path {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-ink);
  list-style: none;
}

.engagement-path li {
  display: grid;
  grid-template-columns: 4rem 1fr;
  gap: 1.5rem;
  align-items: start;
  padding: 1.35rem 0;
  border-bottom: 1px solid var(--diagnose-line);
}

.engagement-path li > span {
  font: 700 0.72rem/1.4 Arial, Helvetica, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.engagement-path h3,
.engagement-path p {
  margin: 0;
}

.engagement-path h3 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.4rem;
  font-weight: 400;
}

.engagement-path p {
  margin-top: 0.35rem;
  color: var(--diagnose-muted);
  line-height: 1.45;
}

.engagement-spec {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--diagnose-line);
}

.engagement-spec > div {
  display: block;
  padding: 1.25rem;
  border-top: 0;
  border-right: 1px solid var(--diagnose-line);
  border-bottom: 0 !important;
}

.engagement-spec > div:first-child { padding-left: 0; }
.engagement-spec > div:last-child { border-right: 0; }
.engagement-spec dd { margin-top: 0.65rem; }

.decision-sheet {
  --diagnose-ink: #101114;
  --diagnose-line: rgba(16, 17, 20, 0.22);
  --diagnose-muted: #6d6b66;
  display: grid;
  grid-template-columns: minmax(15rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(2rem, 6vw, 6rem);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  border: 1px solid var(--diagnose-ink);
  background: #fffefb;
  color: var(--diagnose-ink);
}

.engagement-operations {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--diagnose-line);
}

.engagement-operations > div {
  padding: 1.25rem;
}

.engagement-operations > div + div {
  border-left: 1px solid var(--diagnose-line);
}

.engagement-operations strong {
  font: 700 0.75rem/1.35 Arial, Helvetica, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.engagement-operations p {
  max-width: 36rem;
  margin: 0.65rem 0 0;
  color: var(--diagnose-muted);
  line-height: 1.5;
}

.decision-sheet .diagnose-kicker {
  margin-bottom: 0.8rem;
}

.decision-sheet h3 {
  max-width: 18ch;
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.7rem, 3vw, 2.8rem);
  font-weight: 400;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.decision-sheet dl {
  margin: 0;
}

.decision-sheet dl > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.42fr) 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--diagnose-line);
}

.decision-sheet dl > div:last-child {
  border-bottom: 1px solid var(--diagnose-line);
}

.decision-sheet dt {
  font: 700 0.7rem/1.4 Arial, Helvetica, sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.decision-sheet dd {
  margin: 0;
  line-height: 1.45;
}

.operator-proof-copy > p {
  max-width: 43rem;
  margin: 0;
  font-size: clamp(1.15rem, 2vw, 1.55rem);
  line-height: 1.5;
}

.operator-proof-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.5rem;
  margin-top: 1.5rem;
}

.operator-proof-links a {
  border-bottom: 1px solid currentColor;
  color: var(--color-ink);
  font: 700 0.78rem/1.5 Arial, Helvetica, sans-serif;
  text-decoration: none;
}

.operator-proof-links a:hover {
  border-bottom-width: 2px;
}

.fit-copy > ul {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-rule);
  list-style: none;
}

.fit-copy li {
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--color-rule);
  font-size: 1.06rem;
  line-height: 1.5;
}

.stop-note {
  margin-top: 3rem;
  padding: 1.5rem;
  border: 1px solid var(--color-ink);
}

.stop-note strong {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.55rem;
  font-weight: 400;
}

.stop-note p {
  max-width: 38rem;
  margin: 0.8rem 0 0;
  color: var(--color-ink-soft);
  line-height: 1.55;
}

.not-for {
  margin: 1.5rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  line-height: 1.5;
}

.fit-clarifier {
  margin: 0.7rem 0 0;
  font-size: 0.92rem;
  line-height: 1.5;
}

.contact-panel {
  margin-bottom: clamp(3.5rem, 6vw, 6rem);
  padding-inline: clamp(1.2rem, 4vw, 4rem);
  border: 1px solid var(--diagnose-ink);
  background: var(--diagnose-paper);
  color: var(--diagnose-ink);
}

.contact-panel .diagnose-kicker,
.contact-panel .contact-copy small {
  color: var(--diagnose-muted);
}

.contact-copy > p {
  max-width: 39rem;
  margin: 0 0 1.6rem;
  font-size: 1.08rem;
  line-height: 1.55;
}

.contact-panel .diagnose-cta {
  border-color: var(--diagnose-ink);
  background: var(--diagnose-ink);
  color: var(--diagnose-paper);
}

.contact-panel .diagnose-cta:hover {
  background: transparent;
  color: var(--diagnose-ink);
}

.contact-copy small {
  display: block;
  max-width: 28rem;
  margin-top: 0.9rem;
  line-height: 1.45;
}

.diagnosis-form {
  position: relative;
  margin-top: 1.75rem;
}

.diagnosis-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.15rem;
}

.diagnosis-field {
  display: grid;
  gap: 0.45rem;
}

.diagnosis-field-wide {
  grid-column: 1 / -1;
}

.diagnosis-field label,
.diagnosis-form__privacy {
  font: 700 0.73rem/1.4 Arial, Helvetica, sans-serif;
  letter-spacing: 0.035em;
}

.diagnosis-field input,
.diagnosis-field select,
.diagnosis-field textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.75rem 0.8rem;
  border: 1px solid var(--diagnose-line);
  border-radius: 0;
  background: #fffefb;
  color: var(--diagnose-ink);
  font: 400 0.95rem/1.45 Arial, Helvetica, sans-serif;
}

.diagnosis-field textarea {
  min-height: 9rem;
  resize: vertical;
}

.diagnosis-field input:focus-visible,
.diagnosis-field select:focus-visible,
.diagnosis-field textarea:focus-visible,
.diagnosis-form__privacy input:focus-visible,
.diagnosis-email-fallback:focus-visible {
  outline: 3px solid rgba(16, 17, 20, 0.28);
  outline-offset: 2px;
  border-color: var(--diagnose-ink);
}

.diagnosis-field [aria-invalid="true"] {
  border-color: #9b1c1c;
  box-shadow: 0 0 0 1px #9b1c1c;
}

.diagnosis-field small {
  margin: 0;
  color: var(--diagnose-muted);
  font-size: 0.72rem;
}

.diagnosis-form__privacy {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.65rem;
  align-items: start;
  margin-top: 1.25rem;
  font-weight: 400;
  letter-spacing: 0;
  line-height: 1.5;
}

.diagnosis-form__privacy input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.15rem 0 0;
  accent-color: var(--diagnose-ink);
}

.diagnosis-form__privacy a,
.diagnosis-email-fallback {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.diagnosis-form__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1rem;
  align-items: center;
  margin-top: 1.4rem;
}

.diagnosis-form .diagnose-cta {
  border-radius: 0;
  cursor: pointer;
  font: 700 0.78rem/1 Arial, Helvetica, sans-serif;
}

.diagnosis-form .diagnose-cta:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.diagnosis-form__status,
.diagnosis-form__fallback,
.diagnosis-email-fallback {
  font-size: 0.78rem;
  line-height: 1.45;
}

.diagnosis-form__status {
  min-height: 1.4rem;
  margin-top: 0.8rem;
}

.diagnosis-form__status[data-state="error"] {
  color: #781515;
}

.diagnosis-form__status[data-state="success"] {
  max-width: 38rem;
  padding: 1rem;
  border: 1px solid var(--diagnose-ink);
  background: #fffefb;
  color: var(--diagnose-ink);
}

.diagnosis-form__fallback {
  margin: 1rem 0 0;
  color: var(--diagnose-muted);
}

.diagnosis-email-fallback {
  display: inline-block;
  margin-top: 1.25rem;
  font-weight: 700;
}

.diagnosis-form__honeypot {
  position: absolute !important;
  left: -10000px !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}

.diagnosis-example-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin-top: var(--space-lg);
  color: inherit;
  text-underline-offset: 0.3em;
}

.diagnosis-example-page .article-header {
  max-width: 58rem;
}

.diagnosis-example-page .article-page {
  padding-top: clamp(7.5rem, 10vw, 10rem);
}

.example-disclaimer {
  max-width: 58rem;
  padding: var(--space-md) 0 var(--space-md) var(--space-lg);
  border-left: 2px solid var(--color-ink);
  color: var(--color-ink-soft);
}

.example-route-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: var(--space-xl) 0;
  background: var(--color-rule);
  border: 1px solid var(--color-rule);
}

.example-route-grid > section {
  min-width: 0;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  background: var(--color-paper);
}

.example-route-grid h2 {
  margin-top: 0;
}

.example-route-grid dl,
.example-route-grid ul {
  margin-bottom: 0;
}

.example-route-grid dl {
  display: grid;
  gap: var(--space-md);
}

.example-route-grid dt {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.example-route-grid dd {
  margin: var(--space-xs) 0 0;
}

.example-decision {
  padding: clamp(1.5rem, 4vw, 3.5rem);
  background: var(--color-ink);
  color: var(--color-paper);
}

.example-decision p {
  max-width: 62ch;
}

@media (max-width: 48rem) {
  .example-route-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1100px) {
  .diagnose-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-copy h1 { max-width: 16ch; }

  .route-canvas {
    grid-template-columns: minmax(8rem, 0.9fr) 2.2rem minmax(9rem, 1fr) 2.2rem minmax(10rem, 1fr);
  }
}

@media (max-width: 760px) {
  .diagnose-hero {
    gap: 2rem;
    padding: 5rem 0 2.5rem;
  }

  .hero-copy h1 {
    max-width: none;
    font-size: clamp(2.35rem, 10vw, 2.75rem);
    line-height: 0.96;
  }

  .hero-lede {
    margin-top: 1rem;
    font-size: 1.03rem;
  }

  .hero-actions { margin-top: 1.25rem; }

  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .decision-route {
    margin-inline: -0.35rem;
  }

  .decision-route figcaption {
    align-items: flex-start;
    flex-direction: column;
  }

  .decision-route figcaption strong {
    text-align: left;
  }

  .route-canvas {
    grid-template-columns: 1fr 1.4rem 1fr;
    grid-template-rows: auto 1.6rem auto 1.6rem auto auto;
    min-height: 0;
  }

  .route-request {
    grid-column: 1;
    grid-row: 1;
  }

  .route-link {
    grid-column: 2;
    grid-row: 1;
  }

  .route-ai {
    grid-column: 3;
    grid-row: 1;
  }

  .route-split {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 50%;
    height: auto;
    margin: 0 auto;
    border-top: 0;
    border-left: 1px solid var(--diagnose-line);
    border-right: 1px solid var(--diagnose-line);
  }

  .route-split::before,
  .route-split::after { display: none; }

  .route-branches {
    grid-column: 1 / -1;
    grid-row: 3;
    grid-template-columns: 1fr 1fr;
  }

  .route-output {
    grid-column: 1 / -1;
    grid-row: 5;
    grid-template-columns: 1fr;
  }

  .route-output > div {
    border-top: 1px solid var(--diagnose-line);
    border-left: 0;
  }

  .route-request,
  .route-ai { min-height: 14rem; }

  .route-complete,
  .route-review {
    min-height: 9.5rem;
    padding: 3.7rem 0.8rem 0.8rem;
  }

  .route-complete > svg,
  .route-review > svg { left: 0.8rem; }

  .route-caption {
    grid-template-columns: 3rem 1fr;
  }

  .route-controls { flex-wrap: wrap; }
  .route-steps { order: 3; flex-basis: 100%; }

  .diagnose-section,
  .contact-panel,
  .engagement .section-heading,
  .decision-sheet {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .engagement .section-heading .diagnose-kicker,
  .engagement .section-heading h2,
  .engagement .section-heading > p:last-child {
    grid-column: 1;
  }

  .engagement .section-heading h2 { margin-top: -1.5rem; }

  .engagement-path li {
    grid-template-columns: 2.5rem 1fr;
  }

  .engagement-spec { grid-template-columns: 1fr; }
  .engagement-spec > div {
    padding-inline: 0;
    border-top: 1px solid var(--diagnose-line);
    border-right: 0;
  }

  .engagement-operations {
    grid-template-columns: 1fr;
  }

  .engagement-operations > div + div {
    border-top: 1px solid var(--diagnose-line);
    border-left: 0;
  }

  .diagnosis-form__grid {
    grid-template-columns: 1fr;
  }

  .diagnosis-field-wide {
    grid-column: 1;
  }
}

@media (max-width: 460px) {
  .route-canvas {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1.4rem auto 1.4rem auto;
  }

  .route-request,
  .route-ai,
  .route-branches,
  .route-output {
    grid-column: 1;
  }

  .route-request { grid-row: 1; min-height: 0; }
  .route-link {
    grid-column: 1;
    grid-row: 2;
    justify-self: center;
    width: 1px;
    height: 100%;
  }
  .route-ai { grid-row: 3; min-height: 0; }
  .route-split {
    grid-column: 1;
    grid-row: 4;
    width: 50%;
  }
  .route-branches {
    grid-row: 5;
    grid-template-columns: 1fr;
  }
  .route-output { grid-row: 6; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .route-object,
  .route-output,
  .diagnose-cta {
    transition: none;
  }

  .route-link span,
  .route-split span,
  .route-split i,
  .route-ai::before,
  .ai-activity i {
    animation: none !important;
  }

  .route-object,
  .route-output {
    opacity: 1;
  }
}