@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@400;500;600;700;800;900&family=Source+Code+Pro:wght@500;600&display=swap');

:root {
  --paper: oklch(0.965 0.012 82);
  --paper-deep: oklch(0.925 0.025 78);
  --ink: oklch(0.205 0.035 285);
  --muted: oklch(0.45 0.03 285);
  --aubergine: oklch(0.31 0.105 320);
  --aubergine-dark: oklch(0.235 0.075 320);
  --signal: oklch(0.72 0.17 55);
  --mint: oklch(0.83 0.095 166);
  --line: oklch(0.82 0.025 82);
  --white: oklch(0.985 0.006 82);
  --shell: min(1240px, calc(100vw - 40px));
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: "Archivo", Arial, sans-serif; line-height: 1.55; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; top: 10px; left: 10px; z-index: 1000; padding: 10px 14px; background: var(--ink); color: var(--white); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }
:focus-visible { outline: 3px solid var(--signal); outline-offset: 4px; }

.site-header { position: relative; z-index: 10; border-bottom: 1px solid color-mix(in oklch, var(--aubergine), transparent 55%); background: var(--aubergine); color: var(--white); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 17px; font-weight: 500; letter-spacing: -0.02em; }
.brand b { font-weight: 900; }
.brand-mark { width: 34px; height: 34px; display: grid; grid-template-columns: 1fr 1fr; gap: 3px; transform: rotate(45deg); }
.brand-mark i { display: block; background: var(--signal); }
.brand-mark i:nth-child(2), .brand-mark i:nth-child(3) { background: var(--mint); }
.nav { display: flex; align-items: center; gap: clamp(18px, 3vw, 38px); font-size: 13px; font-weight: 600; }
.nav a { opacity: 0.72; transition: opacity 180ms ease; }
.nav a:hover { opacity: 1; }
.header-status { display: inline-flex; align-items: center; gap: 9px; padding: 9px 12px; border: 1px solid color-mix(in oklch, var(--white), transparent 70%); font-size: 12px; font-weight: 700; }
.status-dot, .live-label i { width: 8px; height: 8px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px color-mix(in oklch, var(--mint), transparent 80%); }

.hero { position: relative; overflow: hidden; color: var(--white); background: var(--aubergine); }
.hero::after { content: ""; position: absolute; width: 45vw; height: 45vw; border: 1px solid color-mix(in oklch, var(--white), transparent 86%); border-radius: 50%; right: -22vw; bottom: -26vw; box-shadow: 0 0 0 8vw color-mix(in oklch, var(--white), transparent 96%), 0 0 0 16vw color-mix(in oklch, var(--white), transparent 97%); }
.hero-grid { position: relative; z-index: 1; min-height: 700px; display: grid; grid-template-columns: 1.08fr 0.92fr; align-items: center; gap: clamp(50px, 7vw, 100px); padding-block: clamp(70px, 10vw, 130px); }
.eyebrow, .section-index { margin: 0 0 24px; font: 600 12px/1.2 "Source Code Pro", monospace; letter-spacing: 0.08em; text-transform: uppercase; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(54px, 7.3vw, 108px); line-height: 0.9; letter-spacing: -0.07em; font-weight: 900; }
.hero-lead { max-width: 630px; margin: 34px 0 0; color: color-mix(in oklch, var(--white), transparent 19%); font-size: clamp(17px, 1.7vw, 22px); line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-top: 36px; }
.button { min-height: 48px; display: inline-flex; align-items: center; justify-content: space-between; gap: 26px; padding: 12px 18px; border: 1px solid transparent; border-radius: 3px; font-size: 13px; font-weight: 800; transition: transform 220ms var(--ease), background 220ms ease, color 220ms ease; }
.button:hover { transform: translateY(-3px); }
.button-primary { color: var(--ink); background: var(--signal); }
.button-text { color: var(--white); border-bottom-color: color-mix(in oklch, var(--white), transparent 45%); }
.hero-facts { display: grid; grid-template-columns: repeat(3, 1fr); max-width: 680px; margin: 60px 0 0; border-top: 1px solid color-mix(in oklch, var(--white), transparent 75%); }
.hero-facts div { padding: 18px 20px 0 0; }
.hero-facts dt { margin-bottom: 8px; color: var(--signal); font: 600 11px "Source Code Pro", monospace; text-transform: uppercase; }
.hero-facts dd { margin: 0; font-size: 13px; color: color-mix(in oklch, var(--white), transparent 18%); }

.network-visual { align-self: center; min-width: 0; border: 1px solid color-mix(in oklch, var(--white), transparent 65%); background: color-mix(in oklch, var(--aubergine-dark), transparent 8%); box-shadow: 22px 22px 0 color-mix(in oklch, var(--signal), transparent 5%); }
.network-topline, .network-footer { min-height: 44px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; font: 600 10px "Source Code Pro", monospace; letter-spacing: 0.08em; }
.network-topline { border-bottom: 1px solid color-mix(in oklch, var(--white), transparent 75%); }
.network-footer { gap: 12px; border-top: 1px solid color-mix(in oklch, var(--white), transparent 75%); color: color-mix(in oklch, var(--white), transparent 35%); }
.live-label { display: inline-flex; align-items: center; gap: 9px; }
.network-stage { position: relative; aspect-ratio: 1 / 0.92; min-height: 400px; overflow: hidden; }
.network-stage::before { content: ""; position: absolute; inset: 0; opacity: 0.2; background-image: linear-gradient(color-mix(in oklch, var(--white), transparent 80%) 1px, transparent 1px), linear-gradient(90deg, color-mix(in oklch, var(--white), transparent 80%) 1px, transparent 1px); background-size: 34px 34px; }
.core { position: absolute; z-index: 3; left: 50%; top: 50%; width: 142px; height: 142px; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 50%; background: var(--signal); color: var(--ink); transform: translate(-50%, -50%); box-shadow: 0 0 0 13px color-mix(in oklch, var(--signal), transparent 78%); }
.core strong { font-size: 42px; line-height: 1; letter-spacing: -0.07em; }
.core span { font-size: 9px; font-weight: 700; }
.core .core-small { margin-bottom: 4px; font-family: "Source Code Pro", monospace; }
.node { position: absolute; z-index: 3; width: 112px; min-height: 80px; padding: 11px; border: 1px solid color-mix(in oklch, var(--white), transparent 52%); background: var(--aubergine-dark); display: grid; grid-template-columns: auto 1fr; gap: 2px 9px; align-content: center; }
.node span { grid-row: 1 / 3; color: var(--signal); font: 600 10px "Source Code Pro", monospace; }
.node strong { font-size: 18px; line-height: 1; }
.node small { color: color-mix(in oklch, var(--white), transparent 40%); }
.node-sms { left: 7%; top: 12%; }
.node-voice { right: 6%; top: 17%; }
.node-ussd { right: 13%; bottom: 9%; border-color: var(--mint); }
.signal { position: absolute; z-index: 1; height: 1px; background: color-mix(in oklch, var(--white), transparent 52%); transform-origin: left center; }
.signal-a { width: 40%; left: 24%; top: 30%; transform: rotate(26deg); }
.signal-b { width: 32%; left: 53%; top: 49%; transform: rotate(-48deg); }
.signal-c { width: 35%; left: 49%; top: 52%; transform: rotate(34deg); background: var(--mint); }

.trust-strip { border-bottom: 1px solid var(--line); background: var(--paper-deep); }
.trust-inner { min-height: 110px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.trust-inner p { max-width: 340px; margin: 0; font-weight: 700; }
.trust-inner div { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: clamp(20px, 4vw, 55px); color: var(--muted); font: 600 11px "Source Code Pro", monospace; letter-spacing: 0.09em; }

.section { padding-block: clamp(90px, 12vw, 170px); }
.section-intro { display: grid; grid-template-columns: 0.62fr 1.15fr 0.8fr; gap: clamp(30px, 6vw, 90px); align-items: start; margin-bottom: clamp(60px, 8vw, 110px); }
.section-intro h2, .impact h2, .model h2, .security h2, .final-cta h2 { margin: 0; font-size: clamp(42px, 6vw, 82px); line-height: 0.98; letter-spacing: -0.055em; }
.section-intro > p:last-child { max-width: 48ch; margin: 0; color: var(--muted); font-size: 17px; }
.channel-list { border-top: 1px solid var(--ink); }
.channel-row { display: grid; grid-template-columns: 70px 0.7fr 1.4fr auto; gap: clamp(20px, 4vw, 60px); align-items: center; min-height: 150px; padding: 28px 0; border-bottom: 1px solid var(--line); transition: padding 250ms var(--ease), background 250ms ease; }
.channel-row:hover { padding-inline: 22px; background: var(--white); }
.channel-number, .channel-meta { font: 600 11px "Source Code Pro", monospace; }
.channel-number { color: var(--muted); }
.channel-row h3 { margin: 0; font-size: clamp(34px, 4vw, 58px); letter-spacing: -0.05em; }
.channel-row p { max-width: 48ch; margin: 0; color: var(--muted); }
.channel-meta { padding: 8px 10px; border: 1px solid var(--line); white-space: nowrap; }
.channel-featured .channel-meta { background: var(--mint); color: var(--ink); border-color: var(--mint); }

.impact { color: var(--white); background: var(--aubergine-dark); }
.impact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 10vw, 150px); }
.impact-statement > p:last-child { max-width: 56ch; margin: 34px 0 0; color: color-mix(in oklch, var(--white), transparent 28%); font-size: 18px; }
.impact-points { border-top: 1px solid color-mix(in oklch, var(--white), transparent 70%); }
.impact-points article { display: grid; grid-template-columns: 50px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid color-mix(in oklch, var(--white), transparent 78%); }
.impact-points article > span { color: var(--signal); font: 600 11px "Source Code Pro", monospace; }
.impact-points h3 { margin: 0 0 8px; font-size: 22px; }
.impact-points p { margin: 0; color: color-mix(in oklch, var(--white), transparent 35%); }

.developers { background: var(--paper-deep); }
.developer-intro { grid-template-columns: 0.62fr 1fr 0.8fr; }
.developer-grid { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 0; align-items: stretch; }
.code-window { overflow: hidden; background: var(--ink); color: var(--white); box-shadow: 18px 18px 0 var(--signal); }
.code-title { min-height: 52px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; border-bottom: 1px solid color-mix(in oklch, var(--white), transparent 84%); color: color-mix(in oklch, var(--white), transparent 40%); font: 600 11px "Source Code Pro", monospace; }
.code-title button { border: 0; background: transparent; color: var(--mint); cursor: pointer; font: inherit; }
.code-window pre { margin: 0; padding: clamp(24px, 4vw, 48px); overflow: auto; font: 500 clamp(12px, 1.3vw, 15px)/1.8 "Source Code Pro", monospace; }
.code-method { color: var(--signal); }
.code-string { color: var(--mint); }
.developer-spec { padding: 14px 0 14px clamp(30px, 5vw, 70px); }
.developer-spec div { display: grid; gap: 7px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.developer-spec span { color: var(--muted); font: 600 10px "Source Code Pro", monospace; }
.developer-spec strong { font-size: 15px; }
.developer-spec a { display: flex; justify-content: space-between; margin-top: 30px; padding-bottom: 10px; border-bottom: 2px solid var(--ink); font-weight: 800; }

.model-grid { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: clamp(50px, 10vw, 150px); }
.roadmap { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--ink); }
.roadmap li { display: grid; grid-template-columns: 0.5fr 1fr; gap: 10px 28px; padding: 28px 0; border-bottom: 1px solid var(--line); }
.roadmap li > span { grid-row: 1 / 3; color: var(--aubergine); font: 600 11px "Source Code Pro", monospace; }
.roadmap strong { font-size: 22px; }
.roadmap p { margin: 0; color: var(--muted); }

.security { padding-block: 85px; border-top: 1px solid var(--line); background: var(--white); }
.security-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 70px; align-items: end; }
.security h2 { font-size: clamp(38px, 5vw, 64px); }
.security-list { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--ink); }
.security-list span { padding: 19px 10px 19px 0; border-bottom: 1px solid var(--line); font: 600 12px "Source Code Pro", monospace; }

.final-cta { padding-block: clamp(90px, 13vw, 170px); color: var(--white); background: var(--aubergine); }
.final-grid { display: grid; grid-template-columns: 0.55fr 1fr; gap: 80px; align-items: start; }
.final-grid > p { max-width: 28ch; margin: 6px 0 0; color: color-mix(in oklch, var(--white), transparent 32%); }
.final-cta h2 { font-size: clamp(58px, 9vw, 120px); }
.button-light { color: var(--ink); background: var(--white); }
.button-outline-light { color: var(--white); border-color: color-mix(in oklch, var(--white), transparent 55%); }
.footer { color: var(--white); background: var(--aubergine-dark); }
.footer-inner { min-height: 120px; display: grid; grid-template-columns: 1fr 1fr 1fr; align-items: center; gap: 30px; }
.footer-inner p { text-align: center; color: color-mix(in oklch, var(--white), transparent 45%); font-size: 13px; }
.footer-inner > div { display: flex; justify-content: flex-end; gap: 22px; color: color-mix(in oklch, var(--white), transparent 38%); font-size: 12px; }
.brand-footer .brand-mark { width: 27px; height: 27px; }

/* Language Switcher */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 700;
  margin-left: auto;
  margin-right: 8px;
}
.lang-link {
  opacity: 0.55;
  transition: opacity 180ms ease, background 180ms ease, border-color 180ms ease;
  padding: 4px 8px;
  border-radius: 2px;
  border: 1px solid transparent;
}
.lang-link:hover {
  opacity: 0.9;
}
.lang-link.active {
  opacity: 1;
  background: color-mix(in oklch, var(--white), transparent 92%);
  border: 1px solid color-mix(in oklch, var(--white), transparent 75%);
}

/* Maturity Disclaimer */
.hero-disclaimer {
  margin-top: 36px;
  padding: 16px;
  border: 1px solid color-mix(in oklch, var(--signal), transparent 45%);
  background: color-mix(in oklch, var(--aubergine-dark), transparent 10%);
  color: color-mix(in oklch, var(--white), transparent 10%);
  font-size: 13px;
  line-height: 1.6;
  border-radius: 3px;
  text-align: left;
}
.hero-disclaimer strong {
  color: var(--signal);
  font-family: "Source Code Pro", monospace;
  font-size: 11px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}


@media (max-width: 960px) {
  .nav { display: none; }
  .hero-grid, .impact-grid, .model-grid, .security-grid { grid-template-columns: 1fr; }
  .hero-grid { min-height: auto; }
  .network-visual { width: min(620px, calc(100% - 18px)); }
  .section-intro, .developer-intro { grid-template-columns: 0.45fr 1.2fr; }
  .section-intro > p:last-child { grid-column: 2; }
  .developer-grid { grid-template-columns: 1fr; }
  .developer-spec { display: grid; grid-template-columns: 1fr 1fr; gap: 0 25px; padding: 45px 0 0; }
  .developer-spec a { grid-column: 1 / -1; }
  .final-grid { grid-template-columns: 1fr; gap: 35px; }
}

@media (max-width: 680px) {
  :root { --shell: min(100% - 28px, 1240px); }
  .site-header { position: relative; }
  .header-inner { min-height: 66px; }
  .header-status { font-size: 0; gap: 0; padding: 10px; }
  .hero-grid { padding-block: 64px 90px; }
  .hero h1 { font-size: clamp(52px, 16vw, 76px); }
  .hero-facts { grid-template-columns: 1fr; gap: 0; }
  .hero-facts div { padding: 14px 0; border-bottom: 1px solid color-mix(in oklch, var(--white), transparent 84%); }
  .network-visual { box-shadow: 10px 10px 0 var(--signal); }
  .network-stage { min-height: 350px; }
  .node { width: 92px; min-height: 68px; padding: 8px; }
  .node strong { font-size: 14px; }
  .node small { font-size: 9px; }
  .core { width: 112px; height: 112px; }
  .core strong { font-size: 34px; }
  .network-footer { flex-wrap: wrap; padding-block: 10px; }
  .trust-inner { padding-block: 25px; align-items: flex-start; flex-direction: column; }
  .trust-inner div { justify-content: flex-start; }
  .section-intro, .developer-intro { grid-template-columns: 1fr; }
  .section-intro > p:last-child { grid-column: auto; }
  .channel-row { grid-template-columns: 42px 1fr; gap: 12px; }
  .channel-row p, .channel-meta { grid-column: 2; }
  .channel-row:hover { padding-inline: 0; }
  .impact-grid { gap: 65px; }
  .developer-spec { grid-template-columns: 1fr; }
  .roadmap li { grid-template-columns: 1fr; }
  .roadmap li > span { grid-row: auto; }
  .security-list { grid-template-columns: 1fr; }
  .footer-inner { padding-block: 35px; grid-template-columns: 1fr; }
  .footer-inner p { text-align: left; }
  .footer-inner > div { justify-content: flex-start; flex-wrap: wrap; }
}

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