:root {
  --page-bg: #fffefa;
  --page-bg-soft: #faf8f5;
  --ink: #171717;
  --ink-soft: #343434;
  --muted: #656565;
  --subtle: #858585;
  --surface: #ffffff;
  --surface-warm: #fffbf5;
  --line: rgba(23, 23, 23, 0.12);
  --line-strong: rgba(23, 23, 23, 0.22);
  --orange: #f36400;
  --orange-deep: #b84700;
  --orange-soft: rgba(243, 100, 0, 0.1);
  --amber: #f5b400;
  --green: #197a4e;
  --green-soft: rgba(25, 122, 78, 0.11);
  --blue-gray: #31465b;
  --dark: #0f1115;
  --dark-soft: #191d24;
  --shadow: 0 24px 80px rgba(15, 21, 36, 0.11);
  --radius: 8px;
  --max-width: 1180px;
  --mono:
    "SFMono-Regular", Consolas, "Liberation Mono", "Noto Sans Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page-bg);
  scroll-behavior: smooth;
  scroll-padding-top: 118px;
}

body {
  min-height: 100%;
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(243, 100, 0, 0.04), rgba(255, 254, 250, 0) 520px),
    var(--page-bg);
  font-family:
    "Inter", "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  font-weight: 400;
  line-height: 1.7;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 23, 23, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 23, 23, 0.028) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.68), transparent 75%);
}

a,
button {
  font: inherit;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 3px solid rgba(243, 100, 0, 0.34);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 10px;
  left: 10px;
  padding: 10px 14px;
  color: #ffffff;
  background: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 40;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 18px;
  min-height: 64px;
  padding: 12px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 254, 250, 0.92);
  backdrop-filter: blur(16px);
}

.reading-progress {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  overflow: hidden;
  pointer-events: none;
}

.reading-progress span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--orange), var(--amber));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 80ms linear;
  will-change: transform;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 900;
  text-decoration: none;
}

.brand-symbol {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 7px;
  color: #ffffff;
  background: var(--orange);
  font-size: 10px;
  font-weight: 900;
}

.hero-section,
.content-section,
.footer-cta {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
}

.hero-section {
  min-height: calc(100svh - 96px);
  display: grid;
  place-items: center;
  padding: 96px 0 84px;
  text-align: center;
}

.section-kicker,
.section-number,
.card-label,
.comparison-label,
.stage-eyebrow,
.visual-caption,
.stage-mini-label,
.sample-note,
.kpi-status {
  font-family: var(--mono);
  letter-spacing: 0;
}

.section-kicker,
.section-number {
  margin: 0 0 18px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-inner {
  width: 100%;
  max-width: 1080px;
}

.hero-section .section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
}

.hero-section .section-kicker::before,
.hero-section .section-kicker::after {
  content: "";
  width: 36px;
  height: 1px;
  background: currentColor;
  opacity: 0.45;
}

.hero-inner h1 {
  margin: 0;
  color: var(--ink);
  font-size: 88px;
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.hero-inner h1 span {
  display: block;
}

.hero-subcopy {
  margin: 34px auto 0;
  color: var(--orange-deep);
  font-size: 28px;
  line-height: 1.45;
  font-weight: 800;
}

.hero-description {
  max-width: 760px;
  margin: 24px auto 0;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 2;
  font-weight: 500;
}

.content-section {
  padding: 92px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 900px;
  margin-bottom: 38px;
}

.section-heading h2,
.footer-cta h2 {
  margin: 0;
  color: var(--ink);
  font-size: 48px;
  line-height: 1.18;
  font-weight: 800;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.section-heading p:not(.section-number) {
  max-width: 780px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
  font-weight: 500;
}

.promise-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.comparison-column {
  min-width: 0;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.74);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.comparison-column:hover {
  transform: translateY(-3px);
  border-color: rgba(243, 100, 0, 0.28);
  box-shadow: 0 16px 48px rgba(15, 21, 36, 0.09);
}

.comparison-before {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(250, 248, 245, 0.92));
}

.comparison-after {
  border-color: rgba(243, 100, 0, 0.26);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(255, 247, 239, 0.94)),
    var(--orange-soft);
}

.comparison-label {
  width: fit-content;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.comparison-after .comparison-label {
  border-color: rgba(243, 100, 0, 0.28);
  color: var(--orange-deep);
  background: rgba(243, 100, 0, 0.08);
}

.comparison-column h3 {
  margin: 18px 0 20px;
  color: var(--ink);
  font-size: 26px;
  line-height: 1.3;
  font-weight: 800;
}

.comparison-column ul,
.operating-model ul,
.roadmap-grid ul,
.stage-list-items {
  margin: 0;
  padding: 0;
  list-style: none;
}

.comparison-column li,
.operating-model li,
.roadmap-grid li,
.stage-list-items li {
  position: relative;
  padding: 11px 0 11px 22px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-weight: 500;
}

.comparison-column li::before,
.operating-model li::before,
.roadmap-grid li::before,
.stage-list-items li::before {
  content: "";
  position: absolute;
  top: 22px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--line-strong);
}

.comparison-after li::before,
.operating-model li::before,
.stage-list-items li::before {
  background: var(--orange);
}

.stage-navigation {
  position: relative;
  z-index: 1;
  top: auto;
  width: 100%;
  padding: 0;
}

.stage-rail {
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 0 auto;
  padding: 2px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(243, 100, 0, 0.45) transparent;
}

.stage-link {
  position: relative;
  min-height: 112px;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  background: rgba(255, 255, 255, 0.7);
  text-align: left;
  text-decoration: none;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.stage-link:hover,
.stage-link.is-active {
  transform: translateY(-2px);
  border-color: rgba(243, 100, 0, 0.42);
  color: var(--ink);
  background: #ffffff;
}

.stage-link.is-active::before {
  content: "";
  position: absolute;
  inset: auto 12px 9px 12px;
  height: 3px;
  border-radius: 999px;
  background: var(--orange);
}

.stage-link-number {
  color: var(--orange);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
}

.stage-link-label {
  color: inherit;
  font-size: 13px;
  line-height: 1.25;
  font-weight: 700;
}

.stage-link-time {
  color: var(--subtle);
  font-size: 11px;
  line-height: 1.25;
  font-weight: 500;
}

.journey-section {
  padding-top: 92px;
}

.journey-layout {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.journey-sidebar,
.journey-content {
  min-width: 0;
}

.journey-sidebar {
  align-self: stretch;
}

.journey-sidebar-sticky {
  position: sticky;
  top: 92px;
  max-height: calc(100vh - 112px);
  overflow-y: auto;
  padding: 2px 8px 12px 0;
  scrollbar-width: thin;
  scrollbar-color: rgba(243, 100, 0, 0.35) transparent;
}

.journey-section-heading {
  max-width: 900px;
  margin-bottom: 70px;
}

.journey-progress {
  padding-top: 0;
}

.journey-progress-label {
  display: block;
  margin: 0 12px 10px;
  color: var(--subtle);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.journey-progress-links {
  display: grid;
  gap: 3px;
}

.journey-progress-link {
  min-height: 42px;
  display: grid;
  grid-template-columns: 24px 10px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius);
  color: var(--muted);
  text-decoration: none;
  transition:
    color 180ms ease,
    background 180ms ease;
}

.journey-progress-link:hover,
.journey-progress-link.is-active {
  color: var(--ink);
  background: var(--surface-warm);
}

.journey-progress-number {
  color: var(--subtle);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.journey-progress-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-strong);
  transition:
    background 180ms ease,
    box-shadow 180ms ease;
}

.journey-progress-name {
  min-width: 0;
  font-size: 12px;
  line-height: 1.35;
  font-weight: 600;
  overflow-wrap: anywhere;
}

.journey-progress-link.is-active .journey-progress-number {
  color: var(--orange-deep);
}

.journey-progress-link.is-active .journey-progress-dot {
  background: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-soft);
}

.protagonist-card {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-bottom: 34px;
  padding: 28px;
  border: 1px solid rgba(243, 100, 0, 0.22);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(243, 100, 0, 0.08), rgba(245, 180, 0, 0.05)),
    rgba(255, 255, 255, 0.86);
}

.protagonist-card h3 {
  margin: 8px 0 0;
  font-size: 26px;
  line-height: 1.3;
  font-weight: 800;
}

.protagonist-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 16px;
  font-weight: 500;
}

.card-label {
  display: inline-flex;
  width: fit-content;
  color: var(--orange-deep);
  font-size: 12px;
  font-weight: 700;
}

.stage-list {
  display: grid;
  gap: 0;
}

.stage-card {
  position: relative;
  scroll-margin-top: 96px;
  padding: 0 0 112px 64px;
}

.stage-card:last-child {
  padding-bottom: 24px;
}

.stage-card::before,
.stage-timeline-line {
  position: absolute;
  top: 10px;
  bottom: 0;
  left: 21px;
  width: 2px;
}

.stage-card::before {
  content: "";
  background: var(--line);
}

.stage-timeline-line {
  z-index: 1;
  background: linear-gradient(180deg, var(--orange), var(--amber));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 1.1s ease 120ms;
}

.stage-card.is-visible .stage-timeline-line {
  transform: scaleY(1);
}

.stage-timeline-node {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 10px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border: 2px solid #d9d4cc;
  border-radius: 50%;
  background: var(--surface);
  transition:
    border-color 260ms ease,
    box-shadow 260ms ease;
}

.stage-timeline-node i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d9d4cc;
  transition: background 260ms ease;
}

.stage-card.is-visible .stage-timeline-node {
  border-color: var(--orange);
  box-shadow: 0 0 0 7px var(--orange-soft);
}

.stage-card.is-visible .stage-timeline-node i {
  background: var(--orange);
}

.stage-kicker {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 18px;
}

.stage-number-label {
  color: var(--orange-deep);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 800;
}

.stage-chip {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink-soft);
  background: var(--surface);
  font-size: 11px;
  font-weight: 700;
}

.stage-chip-time {
  color: var(--surface);
  border-color: var(--ink);
  background: var(--ink);
}

.stage-chip-backstage {
  color: #d7d9df;
  border-color: var(--dark-soft);
  background: var(--dark-soft);
}

.stage-title {
  margin: 0;
  color: var(--ink);
  font-size: 34px;
  line-height: 1.3;
  font-weight: 900;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

.stage-summary {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 2;
  font-weight: 400;
}

.stage-editorial-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 0.9fr);
  gap: 40px;
  align-items: start;
  margin-top: 32px;
}

.stage-core {
  display: grid;
  gap: 22px;
}

.stage-brief {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.stage-brief h4,
.stage-detail-grid h4,
.visual-card h4 {
  margin: 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
}

.stage-brief p {
  margin: 10px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
  line-height: 1.8;
  font-weight: 400;
}

.stage-list-items {
  margin-top: 10px;
}

.stage-list-items li {
  padding: 6px 0 6px 16px;
  border-top: 0;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.7;
  font-weight: 500;
}

.stage-list-items li::before {
  top: 15px;
  width: 5px;
  height: 5px;
  background: var(--orange);
}

.stage-outcome h4 + p + h4 {
  margin-top: 20px;
}

.deliverable-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.deliverable-tags span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 11px;
  border: 1px solid rgba(243, 100, 0, 0.22);
  border-radius: 999px;
  color: var(--orange-deep);
  background: rgba(243, 100, 0, 0.06);
  font-size: 11.5px;
  font-weight: 700;
}

.wow-box {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid rgba(243, 100, 0, 0.24);
  border-radius: 999px;
  color: var(--orange-deep);
  background: var(--orange-soft);
}

.wow-box span {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--surface);
  background: var(--orange);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 800;
}

.wow-box strong {
  color: inherit;
  font-size: 13px;
  line-height: 1.5;
  font-weight: 800;
}

.stage-visual-slot {
  min-width: 0;
}

.stage-detail-disclosure {
  margin-top: 28px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.stage-detail-disclosure summary {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  list-style: none;
}

.stage-detail-disclosure summary::-webkit-details-marker {
  display: none;
}

.stage-detail-disclosure summary span:last-child {
  color: var(--orange);
  font-size: 20px;
  line-height: 1;
  transition: transform 180ms ease;
}

.stage-detail-disclosure[open] summary span:last-child {
  transform: rotate(45deg);
}

.stage-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px 36px;
  padding: 8px 0 28px;
}

.stage-detail-grid section {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.stage-detail-grid h4 + p,
.stage-detail-grid p + h4 {
  margin-top: 10px;
}

.stage-detail-grid p {
  margin-bottom: 18px;
  color: var(--ink-soft);
  font-size: 13.5px;
  line-height: 1.8;
  font-weight: 400;
}

.stage-card.is-backstage .visual-card {
  color: #e8e5de;
  border-color: rgba(255, 255, 255, 0.12);
  background: var(--dark-soft);
}

.stage-card.is-backstage .visual-card h4 {
  color: var(--surface);
}

.visual-card {
  min-width: 0;
  padding: 18px;
  overflow: hidden;
}

.visual-card h4 {
  margin-bottom: 14px;
}

.visual-caption {
  margin-top: 12px;
  color: var(--subtle);
  font-size: 12px;
  font-weight: 600;
}

.pipeline-visual,
.success-tree,
.diagnosis-map,
.plan-visual,
.orchestration-visual,
.first-value-visual,
.report-visual,
.executive-visual {
  display: grid;
  gap: 10px;
}

.source-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.source-stack span,
.pack-card,
.success-tree div,
.diagnosis-map div,
.plan-row,
.node,
.metric-tile,
.report-row,
.executive-column {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
}

.source-stack span {
  min-height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-align: center;
}

.pack-card {
  padding: 18px;
  border-color: rgba(243, 100, 0, 0.24);
  background: rgba(255, 247, 239, 0.86);
}

.pack-card strong,
.success-tree strong,
.diagnosis-map strong,
.plan-row strong,
.metric-tile strong,
.report-row strong,
.executive-column strong {
  display: block;
  color: var(--ink);
  font-size: 15px;
}

.pack-card span,
.success-tree span,
.diagnosis-map span,
.plan-row span,
.metric-tile span,
.report-row span,
.executive-column span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.visual-arrow {
  color: var(--orange);
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  text-align: center;
}

.success-tree div,
.diagnosis-map div,
.plan-row,
.report-row,
.executive-column {
  padding: 14px;
}

.success-tree div:nth-child(1) {
  border-left: 5px solid var(--green);
}

.success-tree div:nth-child(2) {
  border-left: 5px solid var(--blue-gray);
}

.success-tree div:nth-child(3) {
  border-left: 5px solid var(--orange);
}

.diagnosis-map {
  grid-template-columns: repeat(3, 1fr);
}

.diagnosis-map div {
  min-height: 170px;
}

.diagnosis-map div:nth-child(1) {
  border-top: 5px solid var(--green);
}

.diagnosis-map div:nth-child(2) {
  border-top: 5px solid var(--orange);
}

.diagnosis-map div:nth-child(3) {
  border-top: 5px solid var(--blue-gray);
}

.plan-visual {
  gap: 8px;
}

.plan-row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr) 74px;
  gap: 10px;
  align-items: center;
}

.plan-row span:first-child {
  margin-top: 0;
  color: var(--orange-deep);
}

.orchestration-visual {
  position: relative;
  min-height: 290px;
}

.node {
  position: absolute;
  width: 118px;
  min-height: 58px;
  display: grid;
  place-items: center;
  padding: 10px;
  color: var(--ink);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
}

.node.center {
  top: 108px;
  left: 50%;
  width: 150px;
  min-height: 78px;
  color: #ffffff;
  background: var(--orange);
  transform: translateX(-50%);
}

.node.sales {
  top: 18px;
  left: 8px;
}

.node.product {
  top: 20px;
  right: 8px;
}

.node.engineering {
  bottom: 20px;
  right: 8px;
}

.node.customer {
  bottom: 20px;
  left: 8px;
}

.orchestration-line {
  position: absolute;
  left: 54px;
  right: 54px;
  top: 50%;
  height: 1px;
  background: rgba(245, 180, 0, 0.34);
}

.orchestration-line.vertical {
  top: 56px;
  bottom: 56px;
  left: 50%;
  right: auto;
  width: 1px;
  height: auto;
}

.first-value-visual {
  grid-template-columns: repeat(2, 1fr);
}

.metric-tile {
  padding: 16px;
}

.metric-tile strong {
  font-size: 24px;
}

.metric-tile .sample-note {
  width: fit-content;
  margin-top: 10px;
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--orange-deep);
  background: rgba(243, 100, 0, 0.09);
  font-size: 11px;
  font-weight: 700;
}

.report-row {
  display: grid;
  grid-template-columns: 86px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.report-row strong {
  color: var(--orange-deep);
  font-family: var(--mono);
}

.executive-visual {
  grid-template-columns: repeat(3, 1fr);
}

.executive-column {
  min-height: 170px;
}

.executive-column strong {
  font-size: 18px;
}

.operating-model {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  align-items: stretch;
}

.operating-model article,
.principles-grid article,
.roadmap-grid article,
.kpi-grid article {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.78);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.operating-model article:hover,
.principles-grid article:hover,
.roadmap-grid article:hover,
.kpi-grid article:hover {
  transform: translateY(-3px);
  border-color: rgba(243, 100, 0, 0.26);
  box-shadow: 0 18px 52px rgba(15, 21, 36, 0.08);
}

.operating-model article {
  padding: 24px;
}

.operating-model .model-center {
  grid-column: 1 / -1;
  order: -1;
  display: grid;
  min-height: 180px;
  place-items: center;
  border-color: rgba(243, 100, 0, 0.22);
  background:
    linear-gradient(135deg, rgba(243, 100, 0, 0.1), rgba(25, 122, 78, 0.07)),
    rgba(255, 255, 255, 0.86);
}

.model-center p {
  max-width: 820px;
  margin: 0;
  color: var(--ink);
  font-size: 36px;
  line-height: 1.32;
  font-weight: 800;
  text-align: center;
}

.operating-model h3,
.principles-grid h3,
.roadmap-grid h3 {
  margin: 10px 0 16px;
  color: var(--ink);
  font-size: 22px;
  line-height: 1.32;
  font-weight: 800;
}

.principles-grid,
.roadmap-grid,
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.principles-grid article,
.roadmap-grid article,
.kpi-grid article {
  padding: 22px;
}

.principles-grid span,
.roadmap-grid span,
.kpi-status {
  display: block;
  color: var(--orange-deep);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 700;
}

.principles-grid p {
  margin: 0;
  color: var(--ink-soft);
  font-weight: 500;
}

.kpi-grid article {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 176px;
}

.kpi-grid strong {
  display: block;
  color: var(--ink);
  font-size: 38px;
  line-height: 1;
  font-weight: 900;
}

.kpi-grid span:not(.kpi-status) {
  display: block;
  margin-top: 18px;
  color: var(--ink-soft);
  font-weight: 600;
}

.kpi-status {
  margin-top: 18px;
  color: var(--subtle);
}

.feedback-loop {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
  counter-reset: feedback;
}

.feedback-loop div {
  position: relative;
  min-height: 150px;
  display: flex;
  align-items: flex-end;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.8);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.3;
  font-weight: 700;
}

.feedback-loop div::before {
  counter-increment: feedback;
  content: "0" counter(feedback);
  position: absolute;
  top: 14px;
  left: 16px;
  color: var(--orange-deep);
  font-family: var(--mono);
  font-size: 12px;
}

.feedback-loop div::after {
  content: "->";
  position: absolute;
  right: -18px;
  top: 50%;
  z-index: 2;
  color: var(--orange);
  font-family: var(--mono);
  font-weight: 700;
  transform: translateY(-50%);
}

.feedback-loop div:last-child {
  border-color: rgba(243, 100, 0, 0.26);
  background: var(--orange-soft);
}

.feedback-loop div:last-child::after {
  content: "";
}

.roadmap-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.roadmap-grid article {
  min-height: 300px;
}

.roadmap-grid li {
  font-size: 14px;
}

.footer-cta {
  margin-bottom: 56px;
  padding: 76px 48px;
  border: 1px solid rgba(243, 100, 0, 0.26);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(243, 100, 0, 0.12), rgba(25, 122, 78, 0.08)),
    #ffffff;
  text-align: center;
}

.footer-cta h2 {
  max-width: 920px;
  margin: 0 auto;
}

.footer-cta a {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  margin-top: 28px;
  padding: 0 18px;
  border: 1px solid var(--orange);
  border-radius: 999px;
  color: #ffffff;
  background: var(--orange);
  font-weight: 700;
  text-decoration: none;
}

.noscript-fallback {
  display: grid;
  gap: 12px;
  margin-top: 30px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #ffffff;
}

.noscript-fallback h3,
.noscript-fallback h4,
.noscript-fallback p {
  margin: 0;
}

.noscript-fallback article {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.js-enabled [data-reveal],
.js-enabled .stage-card {
  opacity: 0;
  transform: translateY(22px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

.js-enabled [data-reveal].is-visible,
.js-enabled .stage-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1120px) {
  .hero-inner h1 {
    font-size: 72px;
  }

  .journey-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    gap: 36px;
  }

  .stage-editorial-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .stage-visual-slot {
    max-width: 680px;
  }

  .operating-model,
  .principles-grid,
  .kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .roadmap-grid,
  .feedback-loop {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feedback-loop div::after {
    content: "";
  }
}

@media (max-width: 820px) {
  html {
    scroll-padding-top: 112px;
  }

  .site-header {
    padding: 12px 18px;
  }

  .hero-section,
  .content-section,
  .footer-cta {
    width: min(100% - 32px, var(--max-width));
  }

  .hero-section {
    padding: 72px 0 64px;
  }

  .section-heading h2,
  .footer-cta h2 {
    font-size: 34px;
  }

  .hero-inner h1 {
    font-size: 52px;
  }

  .hero-subcopy {
    font-size: 20px;
  }

  .hero-description {
    font-size: 16px;
  }

  .content-section {
    padding: 68px 0;
  }

  .promise-comparison,
  .protagonist-card,
  .operating-model,
  .principles-grid,
  .kpi-grid,
  .roadmap-grid,
  .feedback-loop,
  .diagnosis-map,
  .executive-visual {
    grid-template-columns: 1fr;
  }

  .comparison-column,
  .protagonist-card {
    padding: 22px;
  }

  .stage-navigation {
    top: auto;
  }

  .stage-rail {
    width: 100%;
    grid-auto-columns: minmax(176px, 68vw);
    grid-auto-flow: column;
    grid-template-columns: none;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    padding-bottom: 8px;
  }

  .stage-link {
    scroll-snap-align: start;
  }

  .journey-layout {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .journey-sidebar-sticky {
    position: static;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }

  .journey-sidebar {
    align-self: auto;
  }

  .journey-section-heading {
    max-width: 680px;
    margin-bottom: 24px;
  }

  .journey-progress {
    overflow-x: auto;
    padding-bottom: 8px;
    scroll-snap-type: x mandatory;
  }

  .journey-progress-label {
    margin-left: 0;
  }

  .journey-progress-links {
    width: max-content;
    grid-auto-columns: minmax(190px, 58vw);
    grid-auto-flow: column;
  }

  .journey-progress-link {
    scroll-snap-align: start;
  }

  .stage-card {
    scroll-margin-top: 124px;
    padding: 0 0 88px 52px;
  }

  .stage-card::before,
  .stage-timeline-line {
    left: 17px;
  }

  .stage-timeline-node {
    left: 6px;
  }

  .stage-title {
    font-size: 30px;
  }

  .stage-editorial-grid {
    margin-top: 26px;
  }

  .stage-detail-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .source-stack,
  .first-value-visual {
    grid-template-columns: 1fr;
  }

  .model-center p {
    font-size: 28px;
  }

  .footer-cta {
    padding: 48px 24px;
  }
}

@media (max-width: 460px) {
  .hero-section,
  .content-section,
  .footer-cta {
    width: min(100% - 24px, var(--max-width));
  }

  .hero-inner h1 {
    font-size: 40px;
    line-height: 1.12;
  }

  .journey-section-heading h2 span {
    display: block;
  }

  .section-heading h2,
  .footer-cta h2 {
    font-size: 27px;
  }

  .stage-navigation {
    top: auto;
  }

  .stage-link {
    min-height: 96px;
  }

  .stage-title {
    font-size: 26px;
  }

  .stage-card {
    padding: 0 0 76px 40px;
  }

  .stage-card::before,
  .stage-timeline-line {
    left: 12px;
  }

  .stage-timeline-node {
    left: 1px;
  }

  .visual-card {
    padding: 16px;
  }

  .stage-kicker {
    align-items: flex-start;
    gap: 8px;
  }

  .stage-chip {
    min-height: 26px;
    padding-inline: 9px;
  }

  .stage-summary {
    font-size: 15px;
    line-height: 1.9;
  }

  .stage-editorial-grid {
    gap: 24px;
  }

  .wow-box {
    width: 100%;
    align-items: flex-start;
    border-radius: var(--radius);
  }

  .plan-row,
  .report-row {
    grid-template-columns: 1fr;
  }

  .orchestration-visual {
    min-height: 380px;
  }

  .node {
    width: 112px;
  }

  .node.center {
    top: 148px;
  }

  .node.sales {
    top: 12px;
    left: 0;
  }

  .node.product {
    top: 12px;
    right: 0;
  }

  .node.engineering {
    right: 0;
    bottom: 12px;
  }

  .node.customer {
    left: 0;
    bottom: 12px;
  }

  .kpi-grid strong {
    font-size: 32px;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }

  .js-enabled [data-reveal],
  .js-enabled .stage-card {
    opacity: 1;
    transform: none;
  }
}