:root {
  --ink: #071426;
  --navy: #071529;
  --navy-2: #0e2138;
  --paper: #f7f3e9;
  --paper-soft: #fbf8ef;
  --cream: #efe7d7;
  --muted: rgba(7, 20, 38, 0.68);
  --inverse: #fff9ec;
  --inverse-muted: rgba(255, 249, 236, 0.74);
  --gold: #c7a45a;
  --gold-2: #dfc27a;
  --line: rgba(7, 20, 38, 0.14);
  --line-light: rgba(255, 249, 236, 0.22);
  --glass: rgba(247, 243, 233, 0.72);
  --glass-dark: rgba(7, 21, 41, 0.58);
  --ease: cubic-bezier(0.645, 0.045, 0.355, 1);
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  background: var(--paper);
}

html {
  scroll-behavior: auto;
}

body {
  margin: 0;
  color: var(--ink);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a,
button {
  color: inherit;
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: default;
  opacity: 0.36;
}

.gateway {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  height: 100dvh;
  overflow: hidden;
  isolation: isolate;
  background: var(--paper);
}

.deck {
  position: relative;
  width: 100vw;
  will-change: transform;
  transition: transform 980ms var(--ease);
}

.chrome {
  position: fixed;
  z-index: 50;
  inset: 24px 34px auto;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 22px;
  pointer-events: none;
}

.brand,
.language-switcher {
  pointer-events: auto;
}

.brand {
  display: block;
  width: clamp(168px, 17vw, 262px);
  text-decoration: none;
  filter: drop-shadow(0 16px 36px rgba(7, 20, 38, 0.24));
}

.brand img {
  display: block;
  width: 100%;
  height: auto;
}

.language-switcher {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  gap: 4px;
  border: 1px solid rgba(7, 20, 38, 0.14);
  border-radius: 999px;
  padding: 4px;
  background: rgba(247, 243, 233, 0.78);
  box-shadow: 0 18px 54px rgba(7, 20, 38, 0.12);
  backdrop-filter: blur(14px) saturate(1.05);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
}

.language-chip {
  min-width: 44px;
  min-height: 42px;
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  background: transparent;
  color: rgba(7, 20, 38, 0.68);
  font-size: 0.78rem;
  font-weight: 850;
}

.language-chip.is-active {
  background: var(--navy);
  color: var(--inverse);
}

.progress-rule {
  position: fixed;
  z-index: 54;
  inset: 0 0 auto;
  height: 3px;
  background: rgba(7, 20, 38, 0.08);
}

.progress-rule span {
  display: block;
  width: 7.7%;
  height: 100%;
  background: linear-gradient(90deg, var(--navy), var(--gold), #7da2a5);
  transition: width 640ms var(--ease);
}

.section-rail {
  position: fixed;
  z-index: 46;
  top: 50%;
  right: 9px;
  display: grid;
  gap: 1px;
  transform: translateY(-50%);
}

.section-rail a {
  display: grid;
  width: 44px;
  height: 40px;
  place-items: center;
  border: 0;
  border-radius: 999px;
  text-decoration: none;
}

.section-rail a::before {
  content: "";
  display: block;
  width: 23px;
  height: 2px;
  border-radius: 999px;
  background: rgba(7, 20, 38, 0.24);
  transition:
    background 220ms ease,
    transform 220ms ease;
}

.section-rail a.is-active::before,
.section-rail a[aria-current="true"]::before {
  background: var(--gold);
  transform: scaleX(1.55);
}

.deck-controls {
  position: fixed;
  z-index: 48;
  right: 34px;
  bottom: 26px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.round-button {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(7, 20, 38, 0.18);
  border-radius: 999px;
  background: rgba(247, 243, 233, 0.68);
  box-shadow: 0 18px 54px rgba(7, 20, 38, 0.16);
  color: var(--ink);
  backdrop-filter: blur(14px) saturate(1.05);
  -webkit-backdrop-filter: blur(14px) saturate(1.05);
}

.round-button span {
  display: block;
  margin-top: -2px;
  font-size: 2rem;
  line-height: 1;
}

.slide-counter {
  min-width: 60px;
  color: rgba(7, 20, 38, 0.76);
  font-size: 0.86rem;
  font-weight: 850;
  text-align: center;
}

.gateway[data-tone="dark"] .language-switcher,
.gateway[data-tone="dark"] .round-button {
  border-color: rgba(255, 249, 236, 0.18);
  background: rgba(7, 21, 41, 0.62);
  color: var(--inverse);
}

.gateway[data-tone="dark"] .language-chip {
  color: rgba(255, 249, 236, 0.74);
}

.gateway[data-tone="dark"] .language-chip.is-active {
  background: var(--gold);
  color: var(--ink);
}

.gateway[data-tone="dark"] .slide-counter {
  color: rgba(255, 249, 236, 0.78);
  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.38);
}

.slide {
  position: relative;
  width: 100vw;
  height: 100vh;
  height: 100svh;
  height: 100dvh;
  min-height: 100vh;
  min-height: 100svh;
  min-height: 100dvh;
  overflow: hidden;
  isolation: isolate;
  background: var(--paper);
  color: var(--ink);
}

.slide-media {
  position: absolute;
  z-index: -3;
  inset: 0;
  background-position: center;
  background-size: cover;
  opacity: 0;
  filter: grayscale(1) contrast(1.05) saturate(0.72);
  transform: scale(1.075);
  transition:
    opacity 900ms var(--ease),
    transform 4300ms var(--ease);
}

.slide.is-active .slide-media {
  opacity: 1;
  transform: scale(1);
}

#decision .slide-media {
  transform: scaleX(-1) scale(1.075);
}

#decision.is-active .slide-media {
  transform: scaleX(-1) scale(1);
}

.wash,
.paper-texture {
  position: absolute;
  pointer-events: none;
}

.wash {
  z-index: -2;
  inset: 0;
  opacity: 0;
  transition: opacity 780ms var(--ease);
}

.tone-photo .wash {
  background:
    linear-gradient(90deg, rgba(7, 21, 41, 0.76), rgba(7, 21, 41, 0.3) 48%, rgba(7, 21, 41, 0.82)),
    linear-gradient(0deg, rgba(7, 21, 41, 0.54), rgba(7, 21, 41, 0.08) 48%, rgba(7, 21, 41, 0.44));
}

.tone-photo-light .wash {
  background:
    linear-gradient(90deg, rgba(247, 243, 233, 0.9), rgba(247, 243, 233, 0.4), rgba(247, 243, 233, 0.94)),
    linear-gradient(0deg, rgba(247, 243, 233, 0.78), rgba(247, 243, 233, 0.18));
}

.slide.is-dimmed .wash {
  opacity: 1;
}

.paper-texture {
  z-index: -1;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(199, 164, 90, 0.12), transparent 28%),
    linear-gradient(118deg, rgba(255, 255, 255, 0.18), transparent 26%),
    repeating-linear-gradient(0deg, rgba(7, 20, 38, 0.014), rgba(7, 20, 38, 0.014) 1px, transparent 1px, transparent 5px);
  opacity: 0.58;
}

.tone-navy {
  color: var(--inverse);
  background:
    radial-gradient(circle at 74% 18%, rgba(199, 164, 90, 0.13), transparent 28%),
    linear-gradient(135deg, var(--navy), var(--navy-2));
}

.tone-photo {
  color: var(--inverse);
  background: var(--navy);
}

.slide-shell {
  position: relative;
  z-index: 1;
  display: grid;
  width: min(1200px, calc(100% - 110px));
  height: 100%;
  min-height: 0;
  margin: 0 auto;
  padding: clamp(86px, 10vh, 118px) 0 clamp(60px, 7vh, 78px);
  align-items: center;
}

.layout-cover,
.layout-chapter {
  justify-items: center;
  text-align: center;
}

.layout-split,
.layout-split-reverse,
.layout-closing {
  grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
  gap: clamp(30px, 5.5vw, 86px);
}

.layout-split-reverse {
  grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
}

.layout-split-reverse .copy-block,
.layout-split-reverse .cta-stack {
  order: 2;
}

.layout-split-reverse .detail-card {
  order: 1;
}

.layout-wide,
.layout-metrics,
.layout-timeline-wide {
  align-content: center;
  gap: clamp(26px, 4.5vh, 46px);
}

.copy-block {
  max-width: 660px;
}

.copy-block.centered {
  max-width: 980px;
  justify-self: center;
  text-align: center;
}

.layout-chapter .copy-block.centered {
  max-width: min(1120px, 100%);
}

.copy-block.centered .lead {
  margin-inline: auto;
  text-align: center;
}

.layout-chapter .copy-block.centered .lead {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 18px;
  color: var(--gold);
  font-size: clamp(0.74rem, 0.9vw, 0.92rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before,
.eyebrow::after {
  content: "";
  width: clamp(30px, 4vw, 62px);
  height: 1px;
  background: currentColor;
}

.copy-block:not(.centered) .eyebrow::after {
  display: none;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.display,
.headline {
  margin-bottom: 24px;
  font-family:
    Georgia,
    "Iowan Old Style",
    "Times New Roman",
    serif;
  font-weight: 600;
  letter-spacing: 0;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
  text-wrap: balance;
}

.display {
  max-width: 1120px;
  font-size: clamp(4.6rem, 8.2vw, 8.7rem);
  line-height: 0.9;
}

.layout-chapter .display {
  font-size: clamp(4.1rem, 7.4vw, 7.7rem);
  overflow-wrap: normal;
  word-break: normal;
}

.headline {
  font-size: clamp(3.15rem, 5.7vw, 6.1rem);
  line-height: 0.94;
}

.lead {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.35vw, 1.24rem);
  line-height: 1.48;
  overflow-wrap: break-word;
}

.layout-cover .lead {
  max-width: 860px;
  margin-inline: auto;
  font-size: clamp(1.08rem, 1.55vw, 1.42rem);
}

.tone-navy .lead,
.tone-photo .lead {
  color: var(--inverse-muted);
}

.ornament {
  width: min(480px, 66vw);
  height: 1px;
  margin: 28px auto;
  background: linear-gradient(90deg, transparent, currentColor, transparent);
  color: rgba(255, 249, 236, 0.38);
}

.tone-paper .ornament,
.tone-photo-light .ornament {
  color: rgba(7, 20, 38, 0.22);
}

.detail-card,
.roadmap-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--glass);
  box-shadow: 0 26px 76px rgba(7, 20, 38, 0.12);
  backdrop-filter: blur(9px) saturate(1.04);
  -webkit-backdrop-filter: blur(9px) saturate(1.04);
}

.tone-navy .detail-card,
.tone-photo .detail-card {
  border-color: var(--line-light);
  background: var(--glass-dark);
  box-shadow: 0 28px 84px rgba(0, 0, 0, 0.24);
}

.detail-card h2,
.roadmap-card h2 {
  margin: 0 0 18px;
  font-size: clamp(1.25rem, 1.8vw, 1.74rem);
  line-height: 1.14;
}

.detail-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.54;
}

.tone-navy .detail-card p,
.tone-photo .detail-card p {
  color: var(--inverse-muted);
}

.gateway-card {
  align-self: center;
}

.gateway-axis {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.gateway-axis span {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  border: 1px solid rgba(7, 20, 38, 0.16);
  border-radius: 999px;
  padding: 8px 13px;
  background: rgba(255, 255, 255, 0.32);
  color: var(--ink);
  font-size: 0.85rem;
  font-weight: 860;
}

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 4vw, 58px);
  width: 100%;
}

.pillar-grid article {
  display: grid;
  min-height: 236px;
  align-content: start;
  border-top: 1px solid var(--line);
  padding-top: 26px;
}

.pillar-grid b {
  color: var(--navy);
  font-family:
    Georgia,
    "Iowan Old Style",
    "Times New Roman",
    serif;
  font-size: clamp(5.4rem, 12vw, 11.6rem);
  font-weight: 500;
  line-height: 0.86;
  margin-bottom: clamp(22px, 2.7vw, 38px);
}

.pillar-grid strong {
  display: block;
  color: var(--ink);
  font-size: clamp(1.05rem, 1.6vw, 1.36rem);
  margin-bottom: 8px;
}

.pillar-grid span {
  color: var(--muted);
  line-height: 1.45;
}

.card-grid {
  display: grid;
  gap: 12px;
}

.chapter-card .card-grid,
.layout-split .card-grid,
.layout-split-reverse .card-grid {
  grid-template-columns: 1fr;
}

.chapter-card {
  width: min(900px, 100%);
  padding: clamp(16px, 2vw, 24px);
}

.chapter-card .card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid article,
.operation-grid article {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 15px 16px;
  background: rgba(255, 255, 255, 0.28);
}

.tone-navy .card-grid article,
.tone-photo .card-grid article {
  border-color: var(--line-light);
  background: rgba(255, 249, 236, 0.07);
}

.card-grid strong,
.operation-grid strong {
  color: var(--gold);
  font-size: 1.06rem;
  line-height: 1.22;
}

.card-grid span,
.operation-grid span {
  color: var(--muted);
  line-height: 1.42;
}

.tone-navy .card-grid span,
.tone-photo .card-grid span,
.tone-navy .operation-grid span,
.tone-photo .operation-grid span {
  color: var(--inverse-muted);
}

.operation-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.operation-grid article {
  min-height: 170px;
  align-content: start;
  padding: 18px;
}

.timeline {
  position: relative;
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  position: relative;
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 18px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.tone-photo .timeline li {
  border-top-color: var(--line-light);
}

.timeline b {
  color: var(--gold);
  font-size: 0.88rem;
  font-weight: 900;
}

.timeline strong {
  display: block;
  margin-bottom: 4px;
  color: inherit;
  font-size: 1.04rem;
}

.timeline em {
  display: block;
  color: var(--muted);
  font-style: normal;
  line-height: 1.38;
}

.tone-photo .timeline em,
.tone-navy .timeline em {
  color: var(--inverse-muted);
}

.roadmap-card {
  width: min(1120px, 100%);
  margin: 0 auto;
}

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

.roadmap-card .timeline li {
  grid-template-columns: 1fr;
  border-top: 2px solid var(--navy);
  padding: 22px 18px 0 0;
}

.roadmap-card .timeline li::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 18px;
  height: 18px;
  border: 3px solid var(--paper);
  border-radius: 50%;
  background: var(--navy);
  box-shadow: 0 0 0 1px var(--navy);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.metric-grid article {
  display: grid;
  min-height: 130px;
  align-content: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
  background: rgba(255, 255, 255, 0.32);
}

.tone-navy .metric-grid article,
.tone-photo .metric-grid article {
  border-color: var(--line-light);
  background: rgba(255, 249, 236, 0.08);
}

.metric-grid strong {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--navy);
  font-family:
    Georgia,
    "Iowan Old Style",
    "Times New Roman",
    serif;
  font-size: clamp(2.1rem, 4vw, 4.15rem);
  line-height: 0.9;
  overflow-wrap: anywhere;
}

.tone-navy .metric-grid strong,
.tone-photo .metric-grid strong {
  color: var(--inverse);
}

.metric-grid small {
  color: var(--gold);
  font-size: 0.34em;
}

.metric-grid span {
  color: var(--muted);
  font-weight: 780;
  line-height: 1.25;
}

.tone-navy .metric-grid span,
.tone-photo .metric-grid span {
  color: var(--inverse-muted);
}

.metric-note {
  width: min(920px, 100%);
  margin: -10px auto 0;
  color: rgba(7, 20, 38, 0.62);
  font-size: clamp(0.82rem, 0.92vw, 0.98rem);
  line-height: 1.38;
  text-align: center;
}

.tone-navy .metric-note,
.tone-photo .metric-note {
  color: var(--inverse-muted);
}

.phone-card {
  position: relative;
  min-height: 380px;
  padding-right: clamp(18px, 16vw, 240px);
}

.phone-card::after {
  content: "";
  position: absolute;
  z-index: 1;
  right: clamp(18px, 3vw, 34px);
  top: 50%;
  width: clamp(118px, 13vw, 166px);
  aspect-ratio: 0.52;
  transform: translateY(-50%);
  border: 10px solid rgba(7, 20, 38, 0.78);
  border-radius: 28px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.54)),
    repeating-linear-gradient(90deg, rgba(7, 20, 38, 0.12) 0 8px, rgba(199, 164, 90, 0.2) 8px 12px);
  box-shadow: 0 24px 60px rgba(7, 20, 38, 0.22);
}

.phone-card > h2,
.phone-card > .card-grid {
  position: relative;
  z-index: 2;
}

.phone-preview {
  position: absolute;
  z-index: 2;
  right: calc(clamp(18px, 3vw, 34px) + clamp(12px, 1.2vw, 18px));
  top: 50%;
  display: grid;
  width: calc(clamp(118px, 13vw, 166px) - clamp(24px, 2.4vw, 36px));
  gap: clamp(8px, 1vw, 12px);
  transform: translateY(-50%);
}

.phone-preview-row {
  min-height: clamp(34px, 4vw, 46px);
  display: grid;
  grid-template-columns: clamp(22px, 2.6vw, 30px) minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(7, 20, 38, 0.12);
  border-radius: 10px;
  padding: 7px;
  background: rgba(255, 249, 236, 0.7);
  box-shadow: 0 10px 24px rgba(7, 20, 38, 0.08);
  color: rgba(7, 20, 38, 0.74);
  font-size: clamp(0.62rem, 0.8vw, 0.78rem);
  font-weight: 850;
  line-height: 1.05;
}

.phone-preview-icon {
  position: relative;
  width: clamp(22px, 2.6vw, 30px);
  aspect-ratio: 1;
  border-radius: 9px;
  background: rgba(199, 164, 90, 0.18);
}

.phone-preview-icon::before,
.phone-preview-icon::after {
  content: "";
  position: absolute;
}

.phone-preview-icon-1::before {
  inset: 7px 6px 6px;
  border-bottom: 2px solid var(--gold);
  border-left: 2px solid var(--gold);
}

.phone-preview-icon-1::after {
  left: 9px;
  right: 7px;
  bottom: 8px;
  height: 12px;
  background: linear-gradient(90deg, var(--gold) 0 3px, transparent 3px 6px, var(--gold) 6px 9px, transparent 9px 12px, var(--gold) 12px 15px);
}

.phone-preview-icon-2::before {
  top: 7px;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  transform: translateX(-50%);
}

.phone-preview-icon-2::after {
  left: 7px;
  right: 7px;
  bottom: 7px;
  height: 9px;
  border: 2px solid var(--gold);
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
  border-bottom: 0;
}

.phone-preview-icon-3::before {
  top: 8px;
  left: 8px;
  width: 14px;
  height: 14px;
  border: 3px solid var(--gold);
  border-radius: 50%;
}

.phone-preview-icon-3::after {
  right: 7px;
  bottom: 7px;
  width: 9px;
  height: 3px;
  border-radius: 999px;
  background: var(--gold);
  transform: rotate(44deg);
  transform-origin: center;
}

.list-stack {
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.list-stack li {
  position: relative;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.38;
}

.list-stack li::before {
  content: "";
  position: absolute;
  top: 0.62em;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold);
}

.tone-photo .list-stack li,
.tone-navy .list-stack li {
  color: var(--inverse-muted);
}

.cta-stack {
  display: grid;
  align-self: center;
  gap: 16px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.cta {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 249, 236, 0.22);
  border-radius: 999px;
  padding: 12px 22px;
  color: var(--inverse);
  text-decoration: none;
  font-weight: 900;
  text-align: center;
}

.cta.primary {
  border-color: var(--gold);
  background: var(--gold);
  color: var(--ink);
}

.cta.primary .route-emphasis,
.cta.primary .brand-emphasis {
  color: currentColor;
}

.note {
  margin: 0;
  color: var(--inverse-muted);
  font-size: clamp(1.02rem, 1.3vw, 1.18rem);
  line-height: 1.46;
}

.route-emphasis,
.brand-emphasis {
  color: var(--gold);
  font-weight: 850;
}

[data-animate] {
  opacity: 0;
  transform: translate3d(0, 24px, 0);
  transition:
    opacity 720ms var(--ease),
    transform 720ms var(--ease);
  transition-delay: calc(var(--reveal-order, 0) * 115ms);
}

.slide.is-reveal-ready [data-animate] {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

@media (min-width: 1200px) and (max-height: 920px) {
  .slide-shell {
    padding-top: 80px;
    padding-bottom: 52px;
  }

  .display {
    margin-bottom: 18px;
    font-size: min(clamp(4rem, 6.7vw, 7.05rem), 13.2vh);
    line-height: 0.9;
  }

  .layout-chapter .display {
    margin-bottom: 18px;
    font-size: min(clamp(3.55rem, 6vw, 6.15rem), 12.2vh);
    line-height: 0.91;
  }

  .headline {
    font-size: clamp(2.9rem, 4.35vw, 5.05rem);
    line-height: 0.95;
  }

  .lead {
    font-size: clamp(0.98rem, 1.08vw, 1.14rem);
    line-height: 1.42;
  }

  .layout-chapter .copy-block.centered {
    max-width: min(1040px, 100%);
  }

  .layout-metrics,
  .layout-timeline-wide {
    gap: 22px;
  }

  .layout-metrics .headline {
    font-size: clamp(3rem, 4.45vw, 5.15rem);
    line-height: 0.92;
  }

  .layout-split-reverse .copy-block {
    max-width: 760px;
  }

  .layout-split-reverse .headline {
    font-size: clamp(2.9rem, 4.28vw, 4.95rem);
  }

  .metric-grid article {
    min-height: 112px;
    padding: 16px;
  }

  .metric-grid strong {
    font-size: clamp(2rem, 3.35vw, 3.65rem);
  }

  .chapter-card {
    width: min(860px, 100%);
    padding: 18px 20px;
  }

  .chapter-card .card-grid article {
    padding: 13px 14px;
  }
}

@media (max-width: 1100px) {
  .slide-shell {
    width: min(900px, calc(100% - 76px));
  }

  .layout-split,
  .layout-split-reverse,
  .layout-closing {
    gap: 34px;
  }

  .headline {
    font-size: clamp(2.75rem, 5.5vw, 5rem);
  }

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

@media (max-width: 880px) {
  .chrome {
    inset: 18px 18px auto;
  }

  .slide-shell {
    width: min(680px, calc(100% - 36px));
    padding: 94px 0 72px;
  }

  .layout-split,
  .layout-split-reverse,
  .layout-closing {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .layout-split-reverse .copy-block,
  .layout-split-reverse .cta-stack,
  .layout-split-reverse .detail-card {
    order: initial;
  }

  .pillar-grid,
  .metric-grid,
  .roadmap-card .timeline,
  .chapter-card .card-grid {
    grid-template-columns: 1fr;
  }

  .pillar-grid {
    gap: 16px;
  }

  .pillar-grid article {
    min-height: 120px;
    grid-template-columns: 100px 1fr;
    align-items: center;
    align-content: center;
    gap: 16px;
  }

  .pillar-grid b {
    grid-row: span 2;
    font-size: 4.4rem;
    margin-bottom: 0;
  }

  .roadmap-card .timeline {
    gap: 12px;
  }

  .roadmap-card .timeline li {
    border-top-width: 1px;
    padding: 14px 0 0;
  }
}

@media (max-width: 720px) {
  .brand {
    width: 152px;
  }

  .language-switcher {
    min-height: 44px;
  }

  .language-chip {
    min-width: 40px;
    min-height: 40px;
    padding: 7px 9px;
  }

  .section-rail {
    display: none;
  }

  .deck-controls {
    right: 14px;
    bottom: 14px;
  }

  .round-button {
    width: 44px;
    height: 44px;
  }

  .slide-counter {
    min-width: 54px;
    color: rgba(255, 249, 236, 0.82);
    text-shadow: 0 1px 16px rgba(0, 0, 0, 0.48);
  }

  .slide-shell {
    width: min(100% - 28px, 540px);
    padding: 76px 0 62px;
    align-content: center;
  }

  .display {
    font-size: clamp(2.7rem, 13vw, 4.35rem);
    line-height: 0.94;
  }

  .layout-chapter .display {
    font-size: clamp(2.08rem, 8.4vw, 2.95rem);
    line-height: 0.98;
    overflow-wrap: normal;
  }

  .layout-chapter .copy-block {
    width: 100%;
    max-width: 100%;
  }

  .headline {
    margin-bottom: 14px;
    font-size: clamp(2rem, 9vw, 3.18rem);
    line-height: 0.98;
  }

  .lead {
    font-size: 0.92rem;
    line-height: 1.36;
  }

  .eyebrow {
    gap: 9px;
    margin-bottom: 10px;
    font-size: 0.68rem;
  }

  .eyebrow::before,
  .eyebrow::after {
    width: 26px;
  }

  .detail-card,
  .roadmap-card {
    padding: 14px;
  }

  .detail-card h2,
  .roadmap-card h2 {
    margin-bottom: 10px;
    font-size: 1.08rem;
  }

  .card-grid,
  .timeline,
  .operation-grid,
  .metric-grid {
    gap: 8px;
  }

  .card-grid article,
  .operation-grid article {
    padding: 10px 11px;
  }

  .card-grid strong,
  .operation-grid strong {
    font-size: 0.94rem;
  }

  .card-grid span,
  .operation-grid span,
  .timeline em {
    font-size: 0.84rem;
    line-height: 1.28;
  }

  .operation-grid {
    grid-template-columns: 1fr;
  }

  .operation-grid article {
    min-height: auto;
  }

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

  .pillar-grid article {
    min-height: 96px;
    grid-template-columns: 70px 1fr;
    padding-top: 12px;
  }

  .pillar-grid b {
    font-size: 3.2rem;
  }

  .pillar-grid strong,
  .pillar-grid span {
    font-size: 0.86rem;
  }

  .metric-grid article {
    min-height: 82px;
    padding: 11px;
  }

  .metric-grid strong {
    font-size: clamp(1.5rem, 7vw, 2.25rem);
  }

  .metric-grid span {
    font-size: 0.82rem;
  }

  .timeline li {
    grid-template-columns: 70px 1fr;
    gap: 10px;
    padding-top: 9px;
  }

  .timeline strong {
    font-size: 0.92rem;
  }

  .phone-card {
    min-height: auto;
    padding-right: 14px;
  }

  .phone-card::after {
    display: none;
  }

  .phone-preview {
    display: none;
  }

  .cta {
    min-height: 46px;
    padding: 10px 16px;
  }

  .note {
    font-size: 0.94rem;
  }
}

@media (max-width: 390px), (max-height: 760px) {
  .slide-shell {
    padding-top: 72px;
    padding-bottom: 58px;
  }

  .headline {
    font-size: clamp(1.82rem, 8.4vw, 2.7rem);
  }

  .display {
    font-size: clamp(2.35rem, 11.8vw, 3.7rem);
  }

  .layout-chapter .display {
    font-size: clamp(1.95rem, 8vw, 2.65rem);
  }

  .lead {
    font-size: 0.84rem;
  }

  .detail-card h2,
  .roadmap-card h2 {
    font-size: 1rem;
  }

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

  .metric-grid article {
    min-height: 74px;
    padding: 9px;
  }

  .metric-grid strong {
    font-size: clamp(1.28rem, 6.4vw, 1.8rem);
    gap: 5px;
  }

  .metric-grid span {
    font-size: 0.74rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}