:root {
  color-scheme: dark;
  --ink: #020912;
  --ink-2: #061421;
  --panel: rgba(13, 27, 40, .78);
  --panel-strong: #0b1825;
  --line: rgba(163, 189, 211, .16);
  --text: #f4f8fb;
  --muted: #9eafbf;
  --cyan: #34ddd8;
  --cyan-soft: #9ef5ef;
  --blue: #178bc7;
  --gold: #ddb65e;
  --gold-soft: #f3d68f;
  --max: 1180px;
  --ease-out: cubic-bezier(.23, 1, .32, 1);
  --ease-in-out: cubic-bezier(.77, 0, .175, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 72% 8%, rgba(21, 141, 185, .12), transparent 32rem),
    radial-gradient(circle at 8% 44%, rgba(221, 182, 94, .055), transparent 26rem),
    var(--ink);
  color: var(--text);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 100;
  transform: translateY(-180%);
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--text);
  color: var(--ink);
  transition: transform 160ms var(--ease-out);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 30;
  border-bottom: 1px solid transparent;
  transition: background-color 180ms ease, border-color 180ms ease, backdrop-filter 180ms ease;
}
.site-nav.is-scrolled {
  border-color: var(--line);
  background: rgba(2, 9, 18, .78);
  backdrop-filter: blur(18px) saturate(135%);
}
.nav-inner {
  width: min(calc(100% - 40px), var(--max));
  min-height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 760; letter-spacing: -.02em; }
.brand img { width: 36px; height: 36px; border-radius: 9px; box-shadow: 0 9px 24px rgba(0,0,0,.38); }
.brand small { display: block; margin-top: -4px; color: var(--muted); font-size: 10px; font-weight: 560; letter-spacing: .12em; }
.nav-links { display: flex; align-items: center; gap: 24px; color: #becad5; font-size: 14px; }
.nav-links a { transition: color 160ms ease; }
.nav-links a:hover { color: white; }

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255,255,255,.045);
  color: var(--text);
  font-weight: 690;
  letter-spacing: -.01em;
  transition: transform 150ms var(--ease-out), border-color 150ms ease, background-color 150ms ease, box-shadow 150ms ease;
}
.button:active { transform: scale(.97); }
.button:focus-visible, .nav-links a:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(52, 221, 216, .42);
  outline-offset: 3px;
}
.button-primary {
  border-color: rgba(52, 221, 216, .45);
  background: linear-gradient(135deg, #34ddd8, #1ba9d4);
  color: #001218;
  box-shadow: 0 12px 32px rgba(30, 185, 202, .2);
}
.button-secondary:hover { border-color: rgba(243, 214, 143, .42); background: rgba(221, 182, 94, .08); }
.button-primary:hover { box-shadow: 0 16px 40px rgba(30, 185, 202, .3); }
.button-icon { width: 18px; height: 18px; }
.nav-cta { min-height: 40px; border-radius: 12px; padding-inline: 14px; font-size: 13px; }

.shell { width: min(calc(100% - 40px), var(--max)); margin: 0 auto; }
.hero {
  min-height: 860px;
  padding: 146px 0 92px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, .95fr);
  align-items: center;
  gap: clamp(42px, 7vw, 100px);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  color: var(--cyan-soft);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 30px; height: 1px; background: linear-gradient(90deg, transparent, var(--cyan)); }
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 760px;
  margin-bottom: 26px;
  font-size: clamp(52px, 7vw, 92px);
  line-height: .98;
  letter-spacing: -.065em;
  text-wrap: balance;
}
.hero-lede { max-width: 640px; margin-bottom: 30px; color: #b7c4cf; font-size: clamp(18px, 2vw, 22px); line-height: 1.62; }
.hero-lede strong { color: var(--gold-soft); font-weight: 700; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 32px; }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: 13px; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 14px var(--cyan); }

.vault-stage {
  position: relative;
  isolation: isolate;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
}
.vault-stage::before {
  content: "";
  position: absolute;
  inset: 12%;
  z-index: -2;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(42, 204, 216, .24), rgba(8, 65, 91, .08) 48%, transparent 70%);
  filter: blur(22px);
}
.vault-stage::after {
  content: "";
  position: absolute;
  inset: 14%;
  z-index: -1;
  border: 1px solid rgba(52, 221, 216, .12);
  border-radius: 50%;
  box-shadow: 0 0 70px rgba(52, 221, 216, .08), inset 0 0 70px rgba(52, 221, 216, .04);
}
.vault-image {
  width: min(100%, 580px);
  filter: drop-shadow(0 44px 50px rgba(0,0,0,.45));
  transition: transform 500ms var(--ease-out);
}
.vault-orbit {
  position: absolute;
  padding: 9px 13px;
  border: 1px solid rgba(165, 194, 215, .18);
  border-radius: 99px;
  background: rgba(5, 17, 28, .76);
  backdrop-filter: blur(15px);
  color: #b9c8d5;
  font-size: 12px;
  box-shadow: 0 12px 28px rgba(0,0,0,.25);
}
.orbit-one { top: 12%; right: -2%; }
.orbit-two { bottom: 15%; left: -5%; color: var(--gold-soft); }

.section { padding: 104px 0; }
.section-tight { padding: 76px 0; }
.section-kicker { margin-bottom: 14px; color: var(--cyan); font-size: 12px; font-weight: 780; letter-spacing: .16em; text-transform: uppercase; }
.section-title { max-width: 820px; margin-bottom: 20px; font-size: clamp(36px, 5vw, 60px); line-height: 1.06; letter-spacing: -.048em; text-wrap: balance; }
.section-copy { max-width: 720px; margin-bottom: 42px; color: var(--muted); font-size: 18px; }

.pillars { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.pillar {
  min-height: 280px;
  position: relative;
  overflow: hidden;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: linear-gradient(145deg, rgba(17,34,49,.9), rgba(7,18,29,.88));
}
.pillar::after { content: ""; position: absolute; inset: auto -30% -55% 10%; height: 180px; border-radius: 50%; background: var(--accent, var(--cyan)); opacity: .08; filter: blur(24px); }
.pillar-index { color: var(--accent, var(--cyan)); font-size: 12px; font-weight: 780; letter-spacing: .14em; }
.pillar h3 { margin: 56px 0 12px; font-size: 25px; letter-spacing: -.03em; }
.pillar p { margin-bottom: 0; color: var(--muted); font-size: 14px; }
.pillar-gold { --accent: var(--gold); }

.statement-band {
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(52,221,216,.055), rgba(221,182,94,.045));
}
.statement-grid { min-height: 220px; display: grid; grid-template-columns: .8fr 1.2fr; align-items: center; gap: 60px; }
.statement-label { color: var(--cyan); font-size: 12px; font-weight: 780; letter-spacing: .16em; }
.statement { margin: 0; font-size: clamp(28px, 4vw, 50px); line-height: 1.18; letter-spacing: -.045em; text-wrap: balance; }
.statement em { color: var(--gold-soft); font-family: ui-serif, "New York", Georgia, serif; font-style: normal; }

.architecture {
  display: grid;
  grid-template-columns: 1fr 52px 1fr 52px 1fr;
  align-items: stretch;
  gap: 12px;
}
.arch-card { min-height: 190px; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); }
.arch-card small { color: var(--cyan); font-weight: 760; letter-spacing: .1em; }
.arch-card h3 { margin: 26px 0 8px; font-size: 21px; }
.arch-card p { margin: 0; color: var(--muted); font-size: 14px; }
.arch-arrow { display: grid; place-items: center; color: #4d6679; font-size: 24px; }
.arch-key { border-color: rgba(221,182,94,.28); background: linear-gradient(145deg, rgba(36,31,23,.86), rgba(12,20,28,.9)); }
.arch-key small { color: var(--gold-soft); }

.evidence-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 22px; align-items: stretch; }
.evidence-intro { padding: 36px; border-radius: 26px; background: linear-gradient(150deg, rgba(17,35,50,.9), rgba(5,16,27,.9)); border: 1px solid var(--line); }
.evidence-intro strong { display: block; margin-bottom: 40px; color: var(--gold-soft); font: 42px/1 ui-serif, "New York", Georgia, serif; }
.evidence-list { display: grid; gap: 10px; }
.evidence-item { padding: 18px 20px; display: grid; grid-template-columns: 36px 1fr auto; align-items: center; gap: 14px; border: 1px solid var(--line); border-radius: 18px; background: rgba(10, 24, 37, .72); }
.status-dot { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: rgba(52,221,216,.1); color: var(--cyan); font-weight: 800; }
.evidence-item b { display: block; font-size: 15px; }
.evidence-item span { color: var(--muted); font-size: 12px; }
.evidence-item code { color: var(--cyan-soft); font: 11px ui-monospace, SFMono-Regular, Menlo, monospace; }

.comparison-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 24px; background: rgba(7,18,29,.68); }
.comparison { width: 100%; min-width: 800px; border-collapse: collapse; }
.comparison th, .comparison td { padding: 20px 22px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.comparison tr:last-child td { border-bottom: 0; }
.comparison th { color: var(--muted); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.comparison td:first-child { width: 22%; color: white; font-weight: 700; }
.comparison td { color: #aebdca; font-size: 14px; }
.comparison .vault-col { background: rgba(52,221,216,.035); color: #dffdfa; }

.screens { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 14px; }
.screen-card { overflow: hidden; border: 1px solid var(--line); border-radius: 22px; background: #050e17; box-shadow: 0 18px 40px rgba(0,0,0,.22); transition: transform 220ms var(--ease-out), border-color 220ms ease; }
.screen-card img { width: 100%; height: auto; }

.legacy-flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; counter-reset: legacy; }
.legacy-step { counter-increment: legacy; padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: var(--panel); }
.legacy-step::before { content: "0" counter(legacy); display: block; margin-bottom: 34px; color: var(--gold-soft); font: 16px ui-monospace, monospace; }
.legacy-step h3 { font-size: 17px; }
.legacy-step p { margin-bottom: 0; color: var(--muted); font-size: 13px; }

.faq { display: grid; grid-template-columns: .75fr 1.25fr; gap: 54px; align-items: start; }
.faq-list { border-top: 1px solid var(--line); }
details { border-bottom: 1px solid var(--line); }
summary { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; cursor: pointer; list-style: none; font-weight: 680; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--cyan); font-size: 23px; font-weight: 350; transition: transform 180ms var(--ease-out); }
details[open] summary::after { transform: rotate(45deg); }
details p { max-width: 720px; padding: 0 36px 22px 0; color: var(--muted); font-size: 14px; }

.final-cta { padding: 84px 24px; border: 1px solid rgba(52,221,216,.2); border-radius: 32px; text-align: center; background: radial-gradient(circle at 50% 0, rgba(52,221,216,.12), transparent 45%), linear-gradient(145deg, rgba(14,32,47,.88), rgba(5,15,25,.92)); box-shadow: inset 0 1px rgba(255,255,255,.04); }
.final-cta h2 { max-width: 760px; margin: 0 auto 18px; }
.final-cta p { max-width: 620px; margin: 0 auto 30px; color: var(--muted); }

.subhero { padding: 154px 0 64px; border-bottom: 1px solid var(--line); }
.subhero h1 { max-width: 900px; font-size: clamp(44px, 6vw, 72px); }
.prose { max-width: 820px; padding: 70px 0 110px; }
.prose h2 { margin: 52px 0 16px; font-size: 30px; letter-spacing: -.035em; }
.prose h3 { margin: 34px 0 10px; font-size: 19px; }
.prose p, .prose li { color: #aebdca; }
.prose a { color: var(--cyan-soft); text-decoration: underline; text-underline-offset: 4px; }
.prose code { padding: 2px 6px; border-radius: 6px; background: rgba(255,255,255,.06); color: var(--cyan-soft); }
.notice { margin: 28px 0; padding: 20px 22px; border-left: 2px solid var(--gold); background: rgba(221,182,94,.055); color: #d7cba9; }
.answer-nav { margin-bottom: 42px; padding: 20px 22px; display: flex; flex-wrap: wrap; gap: 10px 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel); }
.answer-nav strong { width: 100%; color: white; }
.answer-nav a { font-size: 14px; }
.criteria-list { display: grid; gap: 12px; padding: 0; list-style: none; counter-reset: criteria; }
.criteria-list li { counter-increment: criteria; padding: 20px; display: grid; grid-template-columns: minmax(170px, .7fr) 1.3fr; gap: 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(10,24,37,.64); }
.criteria-list li::before { content: "0" counter(criteria); color: var(--cyan); font: 11px ui-monospace, monospace; grid-column: 1 / -1; }
.criteria-list strong { color: white; }
.criteria-list span { color: #aebdca; }

footer { margin-top: 110px; border-top: 1px solid var(--line); }
.footer-inner { padding: 38px 0 48px; display: grid; grid-template-columns: 1fr auto; gap: 32px; color: var(--muted); font-size: 13px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.footer-note { max-width: 700px; margin-top: 10px; color: #6f8395; font-size: 11px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 580ms var(--ease-out), transform 580ms var(--ease-out); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (hover: hover) and (pointer: fine) {
  .vault-stage:hover .vault-image { transform: translateY(-6px) rotate(.35deg); }
  .pillar:hover, .screen-card:hover { transform: translateY(-5px); border-color: rgba(52,221,216,.28); }
  .pillar { transition: transform 220ms var(--ease-out), border-color 220ms ease; }
}

@media (max-width: 980px) {
  .nav-links a:not(.nav-cta):not(.language-link) { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 132px; }
  .hero-copy { text-align: center; }
  .hero-lede { margin-inline: auto; }
  .hero-actions, .trust-row { justify-content: center; }
  .vault-stage { width: min(620px, 100%); margin: 0 auto; }
  .pillars { grid-template-columns: repeat(2, 1fr); }
  .evidence-layout, .faq { grid-template-columns: 1fr; }
  .screens { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 12px; }
  .screen-card { min-width: min(310px, 74vw); scroll-snap-align: center; }
  .legacy-flow { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .shell, .nav-inner { width: min(calc(100% - 28px), var(--max)); }
  .nav-inner { min-height: 64px; }
  .brand small { display: none; }
  .language-link { font-size: 12px; }
  .nav-cta { display: none; }
  .hero { padding: 116px 0 58px; gap: 22px; }
  h1 { font-size: clamp(45px, 14vw, 66px); }
  .hero-lede { font-size: 17px; }
  .hero-actions .button { width: 100%; }
  .vault-orbit { display: none; }
  .section { padding: 76px 0; }
  .section-tight { padding: 56px 0; }
  .pillars, .legacy-flow { grid-template-columns: 1fr; }
  .pillar { min-height: 230px; }
  .pillar h3 { margin-top: 38px; }
  .statement-grid { min-height: 260px; grid-template-columns: 1fr; align-content: center; gap: 18px; }
  .architecture { grid-template-columns: 1fr; }
  .arch-arrow { min-height: 28px; transform: rotate(90deg); }
  .evidence-intro { padding: 25px; }
  .evidence-item { grid-template-columns: 32px 1fr; }
  .evidence-item code { grid-column: 2; }
  .final-cta { padding: 58px 20px; }
  .footer-inner { grid-template-columns: 1fr; }
  .criteria-list li { grid-template-columns: 1fr; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; transition: opacity 180ms ease; }
}


.vault-image {
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: contain;
}