:root {
  color-scheme: dark;
  --bg: #07100f;
  --panel: rgba(255, 255, 255, 0.045);
  --line: rgba(217, 243, 237, 0.11);
  --ink: #f4f8f6;
  --muted: rgba(232, 241, 238, 0.64);
  --soft: rgba(232, 241, 238, 0.44);
  --mint: #8edfd2;
  --cyan: #75cbd8;
  --violet: #9aa0d2;
  --gold: #d5ad83;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(760px 520px at 14% -8%, rgba(78, 173, 153, 0.13), transparent 68%),
    radial-gradient(680px 520px at 96% 12%, rgba(95, 117, 178, 0.1), transparent 70%),
    var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 40px, 1080px);
  min-height: 86px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  text-decoration: none;
  font-size: 17px;
  font-weight: 760;
  letter-spacing: -0.025em;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.3);
}

.site-nav { display: flex; align-items: center; gap: 22px; }

.site-nav a {
  color: var(--muted);
  font-size: 13px;
  font-weight: 620;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus-visible { color: var(--ink); }

.site-nav .open-app {
  min-height: 40px;
  padding: 9px 15px;
  border: 1px solid rgba(142, 223, 210, 0.2);
  border-radius: 13px;
  color: #dff9f3;
  background: rgba(142, 223, 210, 0.075);
}

.page {
  width: min(100% - 40px, 960px);
  margin: 0 auto;
  padding: 74px 0 112px;
}

.hero {
  max-width: 820px;
  padding: 52px 0 76px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--mint);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1 {
  max-width: 15ch;
  margin: 0;
  color: #fbfdfc;
  font-size: clamp(42px, 8vw, 76px);
  font-weight: 710;
  line-height: 0.98;
  letter-spacing: -0.063em;
}

.lead {
  max-width: 63ch;
  margin: 25px 0 0;
  color: var(--muted);
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.55;
  letter-spacing: -0.014em;
}

.boundary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 27px;
  padding: 8px 12px;
  border: 1px solid rgba(142, 223, 210, 0.16);
  border-radius: 999px;
  color: rgba(220, 245, 239, 0.76);
  background: rgba(142, 223, 210, 0.055);
  font-size: 12px;
  font-weight: 630;
}

.boundary::before {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(142, 223, 210, 0.08);
  content: "";
}

.section {
  padding: 58px 0;
  border-top: 1px solid var(--line);
}

.section-head { max-width: 700px; margin-bottom: 30px; }

h2 {
  margin: 0;
  color: #f8fbfa;
  font-size: clamp(28px, 4.6vw, 44px);
  font-weight: 680;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

h3 {
  margin: 0 0 9px;
  color: #f4f8f6;
  font-size: 17px;
  font-weight: 680;
  letter-spacing: -0.02em;
}

p { margin: 0; }

.section-head p,
.answer {
  max-width: 65ch;
  margin-top: 16px;
  color: var(--muted);
  font-size: 16px;
}

.answer strong { color: var(--ink); }

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.card {
  min-height: 168px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background:
    radial-gradient(240px 150px at 100% 0%, rgba(142, 223, 210, 0.06), transparent 72%),
    var(--panel);
}

.card .label {
  display: inline-block;
  margin-bottom: 22px;
  color: var(--soft);
  font-size: 10px;
  font-weight: 760;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.card p { color: var(--muted); font-size: 14px; }

.signal-row {
  display: grid;
  grid-template-columns: 88px minmax(140px, 0.8fr) minmax(0, 1.5fr);
  gap: 22px;
  align-items: start;
  padding: 23px 0;
  border-top: 1px solid var(--line);
}

.signal-row:first-child { border-top: 0; }

.signal-time {
  color: var(--mint);
  font-size: 13px;
  font-weight: 760;
  letter-spacing: 0.02em;
}

.signal-row p { color: var(--muted); font-size: 14px; }

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

.step {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 21px;
  background: var(--panel);
  counter-increment: step;
}

.step::before {
  display: block;
  margin-bottom: 28px;
  color: var(--mint);
  font-size: 11px;
  font-weight: 760;
  letter-spacing: 0.14em;
  content: "0" counter(step);
}

.step p { color: var(--muted); font-size: 14px; }

.fact-table {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-collapse: separate;
  border-spacing: 0;
  border-radius: 20px;
  background: var(--panel);
}

.fact-table th,
.fact-table td {
  padding: 17px 19px;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 14px;
}

.fact-table tr:first-child th,
.fact-table tr:first-child td { border-top: 0; }

.fact-table th { width: 28%; color: var(--ink); font-weight: 680; }
.fact-table td { color: var(--muted); }

.faq { display: grid; gap: 10px; }

.faq details {
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.032);
}

.faq summary {
  color: var(--ink);
  font-size: 15px;
  font-weight: 680;
  cursor: pointer;
  list-style: none;
}

.faq summary::-webkit-details-marker { display: none; }

.faq summary::after {
  float: right;
  color: var(--soft);
  content: "+";
}

.faq details[open] summary::after { content: "−"; }

.faq p { max-width: 69ch; padding-top: 13px; color: var(--muted); font-size: 14px; }

.references { padding-left: 20px; color: var(--muted); }
.references li { margin: 10px 0; padding-left: 4px; }
.references a { color: #b9e9e1; text-underline-offset: 3px; }

.founder {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.founder-mark {
  display: grid;
  width: 148px;
  height: 148px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 38px;
  background: radial-gradient(circle at 36% 30%, rgba(142, 223, 210, 0.2), rgba(117, 203, 216, 0.04) 55%, transparent 72%), var(--panel);
}

.founder-mark img { width: 78px; height: 78px; border-radius: 22px; }
.founder p { max-width: 62ch; color: var(--muted); }

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px;
  border: 1px solid rgba(142, 223, 210, 0.17);
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(142, 223, 210, 0.085), rgba(117, 203, 216, 0.035));
}

.cta p { color: var(--muted); font-size: 14px; }
.cta a {
  flex: 0 0 auto;
  min-height: 46px;
  padding: 11px 17px;
  border-radius: 14px;
  color: #07110f;
  background: #bceee6;
  font-size: 13px;
  font-weight: 760;
  text-decoration: none;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(100% - 40px, 1080px);
  min-height: 96px;
  margin: 0 auto;
  border-top: 1px solid var(--line);
  color: var(--soft);
  font-size: 12px;
}

.site-footer nav { display: flex; flex-wrap: wrap; gap: 17px; }
.site-footer a { text-decoration: none; }
.site-footer a:hover { color: var(--ink); }

@media (max-width: 720px) {
  .site-header { width: min(100% - 28px, 1080px); min-height: 72px; }
  .site-nav a:not(.open-app) { display: none; }
  .page { width: min(100% - 32px, 960px); padding: 34px 0 78px; }
  .hero { padding: 48px 0 62px; }
  .grid, .steps { grid-template-columns: 1fr; }
  .signal-row { grid-template-columns: 70px 1fr; gap: 10px 16px; }
  .signal-row p { grid-column: 2; }
  .fact-table th, .fact-table td { display: block; width: 100%; border-top: 0; }
  .fact-table th { padding-bottom: 4px; }
  .fact-table td { padding-top: 0; border-bottom: 1px solid var(--line); }
  .fact-table tr:last-child td { border-bottom: 0; }
  .founder { grid-template-columns: 1fr; gap: 22px; }
  .founder-mark { width: 112px; height: 112px; border-radius: 30px; }
  .founder-mark img { width: 64px; height: 64px; }
  .cta { align-items: flex-start; flex-direction: column; }
  .site-footer { align-items: flex-start; flex-direction: column; justify-content: center; padding: 24px 0; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }