@font-face {
  font-family: "Inter";
  src: url("../assets/fonts/inter-latin-var.woff2") format("woff2");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter Fallback";
  src: local("Arial");
  size-adjust: 107.12%;
  ascent-override: 90.44%;
  descent-override: 22.52%;
  line-gap-override: 0%;
}

:root {
  color-scheme: only light;
  --ivory: #fbf6ee;
  --paper: #ffffff;
  --navy: #08375f;
  --navy-soft: #315879;
  --navy-mute: #5f7890;
  --turquoise: #2ed9c3;
  --turquoise-deep: #13a995;
  --orange: #ff9a57;
  --line: rgba(8, 55, 95, 0.10);
  --shadow: 0 24px 70px rgba(8, 55, 95, 0.12);
  --radius: 24px;
  --radius-lg: 32px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --header-h: 64px;
  --film: #050f1a;
  --stage: #fbf6ee;
  --stage-2: #ffffff;
  --stage-deep: #f5eee2;
  --stage-text: #08375f;
  --stage-text-soft: #315879;
  --stage-eyebrow: #08375f;
  --stage-line: rgba(8, 55, 95, 0.12);
  --stage-glass: rgba(255, 255, 255, 0.66);
  --stage-glow: rgba(46, 217, 195, 0.16);
  --stage-rim: rgba(255, 154, 87, 0.12);
  --stage-grain: 0.03;
  --stage-shadow: 0 30px 80px rgba(8, 55, 95, 0.14);
  --stage-button-bg: #08375f;
  --stage-button-text: #ffffff;
  --header-bg: rgba(255, 255, 255, 0.72);
  --header-line: rgba(8, 55, 95, 0.08);
  --footer-bg: #ffffff;
  --footer-text: #315879;
  --footer-text-strong: #08375f;
}

*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--navy);
  font-family: "Inter", "Inter Fallback", Arial, sans-serif;
  font-optical-sizing: auto;
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body:not(.page-home) main { padding-top: var(--header-h); }
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
button, input, textarea, select { font: inherit; }

:focus-visible { outline: 3px solid var(--navy); outline-offset: 4px; }
.stage :focus-visible, .site-header.is-over-stage :focus-visible { outline-color: var(--turquoise); }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { color: var(--navy); font-weight: 700; letter-spacing: -0.035em; line-height: 1.02; text-wrap: balance; }
h1 { font-size: clamp(2.6rem, 6vw, 5.4rem); letter-spacing: -0.04em; line-height: 0.98; }
h2 { font-size: clamp(2.1rem, 4.1vw, 3.8rem); }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.6rem); letter-spacing: -0.02em; }
p { max-width: 42rem; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.75rem 1rem;
  background: var(--navy);
  color: var(--paper);
  transform: translateY(-150%);
}

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

.container { width: min(100% - 2.5rem, 78rem); margin-inline: auto; }
.section { padding-block: clamp(4.5rem, 9vw, 9rem); }
.section--paper { background: var(--paper); }
.section--ivory { background: var(--ivory); }

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 1.1rem;
  color: var(--navy);
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  line-height: 1.2;
  text-transform: uppercase;
}

.eyebrow b { font-weight: 700; letter-spacing: 0.06em; opacity: 0.7; }
.eyebrow::after { width: 2rem; height: 1px; background: currentColor; opacity: 0.5; content: ""; }
.lede { max-width: 36rem; color: var(--navy-soft); font-size: clamp(1.1rem, 1.5vw, 1.3rem); line-height: 1.5; text-wrap: pretty; }

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.8fr);
  gap: clamp(1.5rem, 5vw, 6rem);
  align-items: end;
  margin-bottom: clamp(2.25rem, 5vw, 4.5rem);
}

.section-heading > :last-child { margin-bottom: 0; }

.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 2rem);
}

.editorial-copy { grid-column: span 5; }
.editorial-visual { grid-column: 7 / -1; }

.feature-panel {
  min-height: 100%;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 85% 10%, rgba(255, 154, 87, 0.28), transparent 28rem),
    linear-gradient(135deg, rgba(46, 217, 195, 0.15), var(--paper) 62%);
  box-shadow: var(--shadow);
}

.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--navy);
  color: var(--paper);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  box-shadow: 0 8px 24px rgba(8, 55, 95, 0.22);
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease), transform 0.35s var(--ease), box-shadow 0.35s var(--ease), filter 0.35s var(--ease);
}

.button:hover { background: #0b467a; transform: translateY(-1px); }
.button--secondary { background: transparent; border-color: var(--line); color: var(--navy); box-shadow: none; }
.button--secondary:hover { background: rgba(46, 217, 195, 0.18); }
.stage .button { background: var(--stage-button-bg); color: var(--stage-button-text); box-shadow: 0 0 0 1px rgba(46, 217, 195, 0.25), 0 12px 34px rgba(46, 217, 195, 0.22); }
.stage .button:hover { background: var(--stage-button-bg); filter: brightness(1.08); }
.stage .button--ghost { background: rgba(255, 255, 255, 0.08); border-color: var(--stage-line); color: var(--stage-text); box-shadow: none; backdrop-filter: blur(12px); }
.stage .button--ghost:hover { filter: none; background: rgba(255, 255, 255, 0.16); }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding-bottom: 0.1rem;
  border-bottom: 1px solid rgba(8, 55, 95, 0.25);
  color: var(--navy);
  font-weight: 600;
  text-decoration: none;
}

.text-link::after { content: "→"; transition: transform 0.3s var(--ease); }
.text-link:hover::after { transform: translateX(0.25rem); }
.stage .text-link { color: var(--stage-text); border-color: var(--stage-line); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  border-bottom: 1px solid var(--header-line);
  background: var(--header-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  transition: background-color 0.5s var(--ease), border-color 0.5s var(--ease);
}

.site-header.is-over-stage { border-bottom-color: rgba(255, 255, 255, 0.08); background: rgba(5, 15, 26, 0.42); }
html:not(.js) .site-header { position: relative; height: auto; }
html:not(.js) .site-header__inner { height: auto; padding-block: 0.6rem; }
html:not(.js) body:not(.page-home) main { padding-top: 0; }
.site-header__inner { display: flex; height: 100%; align-items: center; gap: 1.25rem; }

.brand {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.6rem;
  color: var(--navy);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  text-decoration: none;
}

.brand__mark { width: 1.8rem; height: 1.8rem; }
.brand--header, .brand--footer { gap: 8px; }
.brand--header .brand__mark, .brand--footer .brand__mark { width: 30px; height: 30px; }
.brand--header .brand__wordmark, .brand--footer .brand__wordmark { width: auto; height: 27px; }
.site-header.is-over-stage .brand__wordmark { filter: brightness(0) invert(1); }
.site-nav { margin-left: auto; }

.site-nav ul, .footer-nav ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  display: inline-flex;
  min-height: 2.5rem;
  align-items: center;
  padding-inline: 0.85rem;
  border-radius: 999px;
  color: var(--navy-soft);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.3s var(--ease), background-color 0.3s var(--ease);
}

.site-nav a:hover, .site-nav a[aria-current="page"] { background: rgba(8, 55, 95, 0.06); color: var(--navy); }
.site-header.is-over-stage .site-nav a { color: rgba(255, 255, 255, 0.72); }
.site-header.is-over-stage .site-nav a:hover, .site-header.is-over-stage .site-nav a[aria-current="page"] { background: rgba(255, 255, 255, 0.08); color: #fff; }
.site-nav__action { display: none; }

.header-action { flex: 0 0 auto; min-height: 2.55rem; padding: 0.55rem 1.1rem; font-size: 0.88rem; }
.site-header.is-over-stage .header-action { background: var(--turquoise); color: var(--film); box-shadow: 0 0 0 1px rgba(46, 217, 195, 0.35), 0 10px 26px rgba(46, 217, 195, 0.25); }

.nav-toggle {
  display: none;
  min-width: 3rem;
  min-height: 2.6rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--navy);
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
}

.site-header.is-over-stage .nav-toggle { border-color: rgba(255, 255, 255, 0.16); background: rgba(255, 255, 255, 0.08); color: #fff; }

.site-footer { padding-block: 3.5rem 2rem; border-top: 1px solid var(--line); background: var(--footer-bg); color: var(--footer-text); }

.site-footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(9rem, 0.7fr));
  gap: 2.5rem;
}

.site-footer .brand { color: var(--footer-text-strong); }
.site-footer p { max-width: 26rem; margin: 1rem 0 0; color: var(--footer-text); }
.site-footer h2 { margin-bottom: 0.9rem; color: var(--footer-text-strong); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; }
.footer-nav ul { display: grid; justify-items: start; gap: 0.55rem; }
.footer-nav a, .footer-contact a { color: var(--footer-text); text-decoration: none; }
.footer-nav a:hover, .footer-contact a:hover { color: var(--footer-text-strong); }
.footer-contact { display: grid; gap: 0.65rem; }

html.js [data-reveal] { opacity: 0; transform: translateY(22px); filter: blur(6px); transition: opacity 0.8s var(--ease), transform 0.9s var(--ease), filter 0.9s var(--ease); transition-delay: calc(var(--d, 0) * 90ms); }
html.js [data-reveal].is-visible { opacity: 1; transform: translateY(0); filter: blur(0); }

@media (max-width: 52rem) {
  .site-header__inner { min-height: var(--header-h); flex-wrap: wrap; gap: 0.75rem; }
  html.js .nav-toggle { display: inline-flex; align-items: center; justify-content: center; margin-left: auto; }
  .site-nav { flex-basis: 100%; margin-left: 0; }
  html.js .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 1.25rem;
    left: 1.25rem;
    padding: 0.75rem;
    border: 1px solid var(--line);
    border-radius: 1.25rem;
    background: var(--paper);
    box-shadow: var(--shadow);
  }
  html.js .site-nav.is-open { display: block; }
  .site-nav ul { display: grid; gap: 0.15rem; }
  .site-nav a { width: 100%; padding-inline: 0.9rem; color: var(--navy-soft); }
  .site-header.is-over-stage .site-nav a { color: var(--navy-soft); }
  .site-nav__action { display: block; padding-top: 0.5rem; }
  .site-nav__action .button { width: 100%; }
  .header-action { display: none; }
  .section-heading, .editorial-grid, .site-footer__grid { grid-template-columns: 1fr; }
  .editorial-copy, .editorial-visual { grid-column: 1; }
}

@media (max-width: 34rem) {
  .container { width: min(100% - 2rem, 78rem); }
  .brand { font-size: 1rem; }
  .brand--header .brand__mark, .brand--footer .brand__mark { width: 26px; height: 26px; }
  .brand--header .brand__wordmark, .brand--footer .brand__wordmark { height: 23px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
  html.js [data-reveal] { filter: none; transform: none; }
}

/* Payments page */
.payments-hero {
  padding-block: clamp(5rem, 10vw, 10rem) clamp(4rem, 8vw, 7rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 88% 18%, rgba(255, 154, 87, 0.38), transparent 24rem),
    radial-gradient(circle at 55% 100%, rgba(46, 217, 195, 0.24), transparent 30rem),
    var(--paper);
}

.payments-hero__grid,
.payment-chapter__split {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 5vw, 6rem);
  align-items: end;
}

.payments-hero__grid > :first-child { grid-column: span 7; }
.payments-hero__intro { grid-column: 9 / -1; }
.payments-hero__intro .lede { margin-bottom: 2rem; }

.payments-hero__map {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
}

.payments-hero__map a {
  min-height: 3rem;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  color: var(--navy);
  font-size: 0.8rem;
  font-weight: 800;
  text-decoration: none;
}

.payments-hero__map a + a { padding-left: 0.75rem; border-left: 1px solid var(--line); }
.payments-hero__map a:hover { color: var(--turquoise-deep); }

.payment-chapter { padding-block: clamp(4.5rem, 9vw, 9rem); }
.payment-chapter--store { background: var(--ivory); }
.payment-chapter--online { background: var(--paper); }
.payment-chapter--rewards { background: linear-gradient(135deg, #f5fffc, var(--ivory) 58%, #fff2e7); }

.terminal-fork {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}

.terminal-fork__branch {
  min-width: 0;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 3rem) clamp(2rem, 4vw, 3.5rem);
}

.terminal-fork__branch + .terminal-fork__branch { border-left: 1px solid var(--line); }
.terminal-fork__branch .eyebrow { margin-top: 1.5rem; }
.terminal-fork__branch h2 { max-width: 16ch; font-size: clamp(2rem, 3.4vw, 3.5rem); }
.terminal-fork__branch p:not(.eyebrow) { color: var(--navy-soft); }

.device-silhouette {
  position: relative;
  width: min(100%, 26rem);
  min-height: 16rem;
  margin-inline: auto;
  overflow: hidden;
  background:
    radial-gradient(circle at 55% 25%, rgba(46, 217, 195, 0.85), transparent 2.5rem),
    linear-gradient(145deg, #164b76, #082b4a 68%, #ff9a57 160%);
  box-shadow: var(--shadow);
}

.device-silhouette::before {
  position: absolute;
  inset: 1.25rem 22% 2.5rem;
  border: 0.45rem solid #e7fff9;
  border-radius: 1.1rem;
  background: linear-gradient(145deg, #103d63, #0b2843);
  box-shadow: inset 0 0 0 1px rgba(46, 217, 195, 0.4), 0 1.25rem 2.5rem rgba(0, 0, 0, 0.25);
  content: "";
}

.device-silhouette__screen {
  position: absolute;
  z-index: 1;
  top: 42%;
  left: 50%;
  color: var(--turquoise);
  font-size: clamp(0.75rem, 1.6vw, 1rem);
  font-weight: 800;
  letter-spacing: -0.05em;
  transform: translate(-50%, -50%);
}

.device-silhouette--fixed { border-radius: 50% 50% 1.5rem 1.5rem; }
.device-silhouette__base { position: absolute; z-index: 2; bottom: 1rem; left: 33%; width: 34%; height: 1rem; border-radius: 999px; background: #d7f8f1; box-shadow: 0 0.6rem 0 rgba(8, 55, 95, 0.3); }
.device-silhouette--mobile { width: min(100%, 20rem); border-radius: 3rem; transform: rotate(5deg); }
.device-silhouette--mobile::before { inset: 1.1rem 28% 1.1rem; border-radius: 1.25rem; }
.device-silhouette--mobile .device-silhouette__screen { top: 38%; }
.device-silhouette__tap { position: absolute; z-index: 2; right: 31%; bottom: 2rem; width: 1.5rem; height: 1.5rem; border: 2px solid var(--turquoise); border-radius: 50%; }

.payment-chapter__closing { margin: clamp(2rem, 4vw, 3rem) 0 0; text-align: center; }
.payment-chapter__split > :first-child { grid-column: span 5; }
.payment-chapter__split > :last-child { grid-column: 7 / -1; }
.payment-chapter__split--reverse > :first-child { grid-column: span 5; }
.payment-chapter__split--reverse > :last-child { grid-column: 7 / -1; }
.payment-chapter__copy .lede { margin-bottom: 2rem; }

.online-field,
.rewards-field {
  position: relative;
  min-height: clamp(21rem, 40vw, 31rem);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: radial-gradient(circle at 78% 28%, rgba(255, 154, 87, 0.7), transparent 5rem), linear-gradient(135deg, #eafff9, #d9f4ff 62%, #fff6ec);
}

.online-field::before,
.online-field::after {
  position: absolute;
  left: 12%;
  width: 76%;
  height: 1px;
  background: var(--navy);
  content: "";
  opacity: 0.32;
}

.online-field::before { top: 38%; transform: rotate(20deg); }
.online-field::after { top: 64%; transform: rotate(-14deg); }
.online-field span,
.online-field strong { position: absolute; z-index: 1; max-width: 10rem; padding: 0.8rem 1rem; border: 1px solid var(--line); border-radius: 999px; background: rgba(255, 255, 255, 0.76); color: var(--navy); font-size: 0.82rem; line-height: 1.2; }
.online-field span { top: 20%; left: 9%; }
.online-field strong { right: 9%; bottom: 19%; text-align: right; }
.online-field i { position: absolute; top: 43%; left: 45%; width: 4.8rem; height: 4.8rem; border: 0.9rem solid var(--turquoise); border-radius: 50%; box-shadow: 0 0 0 1rem rgba(46, 217, 195, 0.16); }

.rewards-field { background: radial-gradient(circle at 27% 27%, rgba(46, 217, 195, 0.6), transparent 7rem), radial-gradient(circle at 78% 74%, rgba(255, 154, 87, 0.72), transparent 9rem), #fff9ef; }
.rewards-field__ring { position: absolute; inset: 18%; border: 1px solid rgba(8, 55, 95, 0.22); border-radius: 50%; }
.rewards-field strong,
.rewards-field em { position: absolute; z-index: 1; padding: 0.8rem 1rem; border-radius: 999px; font-size: 0.85rem; font-style: normal; font-weight: 800; }
.rewards-field strong { top: 25%; left: 17%; background: var(--navy); color: var(--paper); }
.rewards-field em { right: 15%; bottom: 24%; background: var(--turquoise); color: var(--navy); }
.rewards-field i { position: absolute; top: 47%; left: 48%; width: 0.9rem; height: 0.9rem; border-radius: 50%; background: var(--orange); box-shadow: -5rem -3.5rem 0 0 var(--turquoise), 4.5rem 3rem 0 0 var(--navy); }

@media (max-width: 45rem) {
  .payments-hero__grid,
  .payment-chapter__split { grid-template-columns: 1fr; }
  .payments-hero__grid > :first-child,
  .payments-hero__intro,
  .payment-chapter__split > :first-child,
  .payment-chapter__split > :last-child,
  .payment-chapter__split--reverse > :first-child,
  .payment-chapter__split--reverse > :last-child { grid-column: 1; }
  .terminal-fork { grid-template-columns: 1fr; }
  .terminal-fork__branch + .terminal-fork__branch { border-top: 1px solid var(--line); border-left: 0; }
  .payment-chapter__split--reverse > :first-child { order: 2; }
  .payment-chapter__split--reverse > :last-child { order: 1; }
}

/* Platform page */
.platform-hero {
  padding-block: clamp(5rem, 10vw, 10rem) clamp(4rem, 8vw, 7rem);
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 22%, rgba(46, 217, 195, 0.28), transparent 22rem),
    radial-gradient(circle at 68% 86%, rgba(255, 154, 87, 0.28), transparent 26rem),
    var(--ivory);
}

.platform-hero__grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(1.5rem, 5vw, 6rem);
  align-items: end;
}

.platform-hero__grid > :first-child { grid-column: span 7; }
.platform-hero__grid > :last-child { grid-column: 9 / -1; margin-bottom: 0; }

.platform-signal-section { padding-block: clamp(4.5rem, 9vw, 9rem); }

.signal-field {
  position: relative;
  display: grid;
  min-height: clamp(27rem, 50vw, 38rem);
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-rows: repeat(9, minmax(0, 1fr));
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 48% 48%, rgba(46, 217, 195, 0.36), transparent 13rem),
    radial-gradient(circle at 88% 21%, rgba(255, 154, 87, 0.46), transparent 13rem),
    linear-gradient(135deg, #eefefa, #f0f8ff 56%, #fff7ed);
  box-shadow: var(--shadow);
}

.signal-field::before,
.signal-field::after {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 10%;
  width: 80%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(8, 55, 95, 0.65) 16%, var(--turquoise) 50%, rgba(8, 55, 95, 0.65) 84%, transparent);
  content: "";
  transform-origin: center;
  animation: signal-pulse 5s ease-in-out infinite;
}

.signal-field::before { transform: rotate(18deg); }
.signal-field::after { transform: rotate(-16deg); animation-delay: -2.5s; }

.signal-node,
.signal-core {
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  justify-self: center;
  border: 1px solid rgba(8, 55, 95, 0.2);
  border-radius: 999px;
  box-shadow: 0 0.75rem 2rem rgba(8, 55, 95, 0.12);
  font-size: clamp(0.75rem, 1.5vw, 0.94rem);
  font-weight: 800;
  line-height: 1.2;
  text-align: center;
}

.signal-node { min-width: 6.2rem; padding: 0.8rem 1rem; background: rgba(255, 255, 255, 0.86); color: var(--navy); }
.signal-node--fixed { grid-area: 2 / 2 / span 1 / span 2; }
.signal-node--mobile { grid-area: 4 / 1 / span 1 / span 2; }
.signal-node--online { grid-area: 6 / 2 / span 1 / span 2; }
.signal-node--rewards { grid-area: 8 / 3 / span 1 / span 2; }

.signal-core {
  grid-area: 3 / 5 / span 4 / span 4;
  width: min(100%, 15rem);
  min-height: 8.8rem;
  padding: 1.5rem;
  border-width: 0.75rem;
  border-color: rgba(46, 217, 195, 0.3);
  background: var(--navy);
  color: var(--paper);
  font-size: clamp(1rem, 2vw, 1.3rem);
  letter-spacing: -0.03em;
}

.signal-field__caption { display: flex; justify-content: flex-end; margin-top: 1.5rem; }
.signal-field__caption h2 { margin-bottom: 0; font-size: clamp(1.7rem, 3.5vw, 3.25rem); }

.platform-narrative { padding-block: clamp(4.5rem, 9vw, 9rem); background: var(--ivory); }
.platform-narrative__list { border-top: 1px solid var(--line); }
.platform-narrative__step { display: grid; grid-template-columns: minmax(4rem, 1fr) minmax(0, 8fr); gap: clamp(1.25rem, 4vw, 5rem); padding-block: clamp(2rem, 4.5vw, 4rem); border-bottom: 1px solid var(--line); }
.platform-narrative__step > span { color: var(--turquoise-deep); font-size: clamp(1.2rem, 2vw, 1.8rem); font-weight: 800; letter-spacing: -0.05em; }
.platform-narrative__step .eyebrow { margin-bottom: 0.8rem; }
.platform-narrative__step h2 { max-width: 17ch; margin-bottom: 1rem; font-size: clamp(1.9rem, 3.6vw, 3.4rem); }
.platform-narrative__step p:not(.eyebrow) { margin-bottom: 0; color: var(--navy-soft); font-size: 1.06rem; }

@keyframes signal-pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.72; }
}

@media (max-width: 45rem) {
  .platform-hero__grid { grid-template-columns: 1fr; }
  .platform-hero__grid > :first-child, .platform-hero__grid > :last-child { grid-column: 1; }
  .signal-field { min-height: 30rem; }
  .signal-node--fixed { grid-area: 2 / 1 / span 1 / span 5; }
  .signal-node--mobile { grid-area: 3 / 8 / span 1 / span 5; }
  .signal-node--online { grid-area: 7 / 1 / span 1 / span 5; }
  .signal-node--rewards { grid-area: 8 / 8 / span 1 / span 5; }
  .signal-core { grid-area: 4 / 4 / span 3 / span 6; min-height: 7.5rem; border-width: 0.5rem; }
  .signal-field__caption { grid-template-columns: 1fr; gap: 1rem; }
  .platform-narrative__step { grid-template-columns: 3rem minmax(0, 1fr); }
}

@media (prefers-reduced-motion: reduce) {
  .signal-field::before, .signal-field::after { animation: none; }
}

/* Developers and contact pages */
.developer-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.developer-steps li { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 1rem; padding: clamp(1.5rem, 3vw, 2.5rem); border-bottom: 1px solid var(--line); }
.developer-steps li + li { border-left: 1px solid var(--line); }
.developer-steps span { color: var(--turquoise-deep); font-size: 1.25rem; font-weight: 800; letter-spacing: -0.05em; }
.developer-steps h3 { margin-bottom: 0.75rem; }
.developer-steps p { margin-bottom: 0; color: var(--navy-soft); }

.requirement-list { display: grid; gap: 0; margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.requirement-list li { padding: 1rem 0 1rem 2rem; border-bottom: 1px solid var(--line); color: var(--navy-soft); font-weight: 700; }
.requirement-list li::before { display: inline-block; width: 1.25rem; margin-left: -2rem; color: var(--turquoise-deep); content: "→"; }

.contact-methods { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.contact-card { min-height: 100%; padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--line); border-radius: var(--radius); background: linear-gradient(135deg, rgba(46, 217, 195, 0.14), var(--paper) 68%); box-shadow: var(--shadow); }
.contact-card:nth-child(2) { background: linear-gradient(135deg, rgba(255, 154, 87, 0.18), var(--paper) 68%); }
.contact-card h3 { max-width: 12ch; margin-bottom: 1rem; }
.contact-card p:not(.eyebrow) { color: var(--navy-soft); }

@media (max-width: 45rem) {
  .developer-steps, .contact-methods { grid-template-columns: 1fr; }
  .developer-steps li + li { border-top: 1px solid var(--line); border-left: 0; }
}