:root {
  --type-display-xl: clamp(2.35rem, 5vw, 3.55rem);
  --type-display: clamp(1.85rem, 3.4vw, 2.55rem);
  --type-heading: 1.2rem;
  --type-body-lg: 1.125rem;
  --type-body: 1.02rem;
  --type-small: 0.875rem;
  --type-caption: 0.75rem;
  --lh-ar: 1.75;
  --lh-tight: 1.22;
  --measure: 40rem;
  --band-tint: #f4f8fb;
  --band-dark: #062433;
}

body {
  line-height: var(--lh-ar);
}

.page-hero {
  background:
    radial-gradient(ellipse 70% 55% at 80% 25%, rgba(249, 166, 26, 0.18), transparent 55%),
    linear-gradient(155deg, #041c2e 0%, var(--navy-deep) 50%, var(--navy) 100%);
}

.page-hero h1 {
  color: #fff;
}

.page-hero .flow-node,
.page-hero .demo-card {
  color: var(--ink);
}

.hero-title,
.page-hero-title,
.story-hero h1 {
  font-size: var(--type-display-xl);
  font-weight: 800;
  line-height: var(--lh-tight);
  max-width: 16ch;
}

html[lang="en"] .hero-title,
html[lang="en"] .page-hero-title,
html[lang="en"] .story-hero h1 {
  max-width: 18ch;
  letter-spacing: -0.03em;
}

.section-title {
  font-size: var(--type-display);
  line-height: var(--lh-tight);
  max-width: 22ch;
}

.section-lead,
.story-copy p,
.page-hero-lead,
.hero-lead {
  max-width: var(--measure);
  line-height: var(--lh-ar);
  font-size: var(--type-body-lg);
}

.story-kicker {
  margin: 0 0 0.65rem;
  font-size: var(--type-caption);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy-mid);
}

.story-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 1fr);
  gap: 2.5rem;
  align-items: center;
  padding: 2.5rem 0 3rem;
}

.page-hero .story-hero,
.page-hero-layout.story-hero {
  width: min(1180px, calc(100% - 2rem));
  margin-inline: auto;
}

.flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: stretch;
}

.flow-node {
  flex: 1 1 7.5rem;
  min-width: 6.5rem;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.85rem 0.7rem;
  text-align: center;
  position: relative;
}

.flow-node strong {
  display: block;
  font-size: var(--type-small);
}

.flow-node span {
  display: block;
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: var(--type-caption);
}

.flow-arrow {
  align-self: center;
  width: 1.1rem;
  height: 2px;
  background: linear-gradient(90deg, var(--navy-mid), var(--signal));
  flex: 0 0 auto;
  position: relative;
  overflow: hidden;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, #fff, transparent);
  animation: flowPulse 1.8s linear infinite;
}

html[dir="rtl"] .flow-arrow::after {
  animation-name: flowPulseRtl;
}

@keyframes flowPulse {
  from { transform: translateX(-100%); }
  to { transform: translateX(100%); }
}
@keyframes flowPulseRtl {
  from { transform: translateX(100%); }
  to { transform: translateX(-100%); }
}

.flow--stack {
  flex-direction: column;
  max-width: 22rem;
}

.flow--stack .flow-arrow {
  width: 2px;
  height: 1rem;
  align-self: center;
}

.demo-card {
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--line);
  padding: 0.9rem 1rem;
  box-shadow: 0 16px 40px rgba(6, 36, 51, 0.08);
  font-size: var(--type-small);
}

.demo-card header {
  display: flex;
  justify-content: space-between;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.demo-status {
  color: #0a7a4a;
  background: #e8f7ef;
  border-radius: 999px;
  padding: 0.1rem 0.5rem;
  font-size: var(--type-caption);
}

.band {
  background: var(--band-tint);
}

.band-dark {
  background: var(--band-dark);
  color: #e8f3f8;
}

.band-dark .eco-quote,
.band-dark .eco-node:not(.eco-node--c) {
  color: var(--ink);
}
.band-dark .eco-node:not(.eco-node--c) {
  background: #fff;
}

.band-dark .section-lead,
.band-dark p {
  color: rgba(232, 243, 248, 0.82);
}

.split-story {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: center;
}

.ui-frame {
  background: #0b2a3d;
  border-radius: 18px;
  padding: 0.7rem;
  box-shadow: 0 24px 60px rgba(6, 36, 51, 0.22);
}

.ui-frame img {
  border-radius: 10px;
  width: 100%;
}

.ui-callout {
  margin-top: 0.65rem;
  font-size: var(--type-small);
  color: rgba(255, 255, 255, 0.8);
}

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.compare article {
  border-radius: 18px;
  padding: 1.2rem;
  border: 1px solid var(--line);
  background: #fff;
}

.compare .is-after {
  border-color: var(--navy);
  background: linear-gradient(180deg, #fff, #eef7fb);
}

.journey {
  display: grid;
  grid-template-columns: 14rem 1fr;
  gap: 1.25rem;
}

.journey-nav {
  display: grid;
  gap: 0.4rem;
  align-content: start;
}

.journey-nav button {
  text-align: start;
  border: 0;
  background: transparent;
  border-inline-start: 3px solid var(--line);
  padding: 0.55rem 0.75rem;
  cursor: pointer;
  color: var(--muted);
  font: inherit;
}

.journey-nav button.is-on {
  border-color: var(--signal);
  color: var(--navy-deep);
  font-weight: 700;
  background: #fff;
}

.cap-row {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 1.5rem;
  align-items: center;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
}

.cap-row:last-child {
  border-bottom: 0;
}

.use-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.use-grid article {
  background: #fff;
  border-radius: 16px;
  padding: 1.1rem;
  border: 1px solid var(--line);
}

.final-cta {
  text-align: start;
  padding: 3rem 0;
}

.final-cta h2 {
  max-width: 18ch;
}

.disconnected {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
}

.disconnected span {
  border: 1px dashed #c5d3de;
  background: #fff;
  border-radius: 12px;
  padding: 0.9rem;
  text-align: center;
  font-size: var(--type-small);
  color: var(--muted);
}

.hub {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  max-width: 32rem;
}

.hub .hub-c {
  grid-column: 2;
  grid-row: 2;
  background: var(--navy-deep);
  color: #fff;
  border-radius: 50%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  font-weight: 800;
}

.hub a,
.hub span:not(.hub-c) {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.7rem;
  text-align: center;
  font-size: var(--type-small);
}

.estimator-shell {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr) 14rem;
  gap: 1rem;
  align-items: start;
}

.est-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.35rem;
}

.est-rail li {
  font-size: var(--type-caption);
  color: var(--muted);
  padding: 0.35rem 0.45rem;
  border-radius: 8px;
}

.est-rail li.is-on {
  background: #fff;
  color: var(--navy-deep);
  font-weight: 700;
}

.est-summary {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 1rem;
  font-size: var(--type-small);
  position: sticky;
  top: calc(var(--header-h) + 1rem);
}

.sms-pipe {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.pipe-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--signal);
  animation: pulseDot 1.4s ease-in-out infinite;
}

@keyframes pulseDot {
  50% { transform: scale(1.35); opacity: 0.6; }
}

.cst-badge--topbar .cst-text {
  display: none;
}

.cst-badge--topbar {
  padding: 0.15rem;
  background: transparent;
  border: 0;
}

.cst-logo--topbar {
  height: 22px;
  width: auto;
  opacity: 0.9;
}

.topbar-nav {
  gap: 1.5rem;
}

@media (max-width: 1024px) {
  .story-hero,
  .split-story,
  .compare,
  .journey,
  .cap-row,
  .estimator-shell,
  .use-grid {
    grid-template-columns: 1fr;
  }
  .est-rail,
  .est-summary {
    position: static;
  }
  .hub {
    grid-template-columns: 1fr 1fr;
  }
  .hub .hub-c {
    grid-column: 1 / -1;
    grid-row: auto;
    width: 6.5rem;
    justify-self: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .flow-arrow::after,
  .pipe-dot {
    animation: none;
  }
}

.code-wrap {
  position: relative;
}
.code-wrap pre,
pre.code-sample {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.8rem;
  line-height: 1.55;
  direction: ltr;
  text-align: left;
}
.code-wrap .copy-btn {
  position: absolute;
  top: 0.5rem;
  inset-inline-end: 0.5rem;
  font-size: 0.75rem;
  border: 0;
  border-radius: 8px;
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  background: rgba(255,255,255,0.12);
  color: #fff;
}
.docs-shell {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto 3rem;
}
.docs-side {
  position: sticky;
  top: calc(var(--header-h) + 1rem);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0.75rem;
  display: grid;
  gap: 0.2rem;
}
.docs-side a {
  font-size: var(--type-small);
  padding: 0.35rem 0.5rem;
  border-radius: 8px;
  color: var(--navy-deep);
}
.docs-side a:hover,
.docs-side a:focus {
  background: var(--band-tint);
}
.req-res {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}
.err-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--type-small);
}
.err-table th,
.err-table td {
  border-bottom: 1px solid var(--line);
  padding: 0.45rem 0.3rem;
  text-align: start;
}
.lang-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.5rem 0;
}
.lang-tabs button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 0.3rem 0.75rem;
  cursor: pointer;
  font: inherit;
}
.lang-tabs button.is-on {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}
.thumb-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
  margin-top: 0.75rem;
}
@media (max-width: 1024px) {
  .docs-shell,
  .req-res {
    grid-template-columns: 1fr;
  }
  .docs-side {
    position: static;
    grid-template-columns: 1fr 1fr;
  }
}