:root {
  --bg: #080a0b;
  --bg-2: #0b0d12;
  --panel: rgba(255, 255, 255, 0.03);
  --border: #1b1e22;
  --text: #e9eaec;
  --muted: #9aa0a6;
  --muted-2: #6b7176;
  --teal: #2dd4bf;
  --cyan: #22d3ee;
  --deep: #0d9488;
  --grad: linear-gradient(135deg, #2dd4bf 0%, #22d3ee 100%);
  --radius: 16px;
  --max: 1120px;
  --font:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---------- Nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(8, 10, 11, 0.72);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.3px;
}

.brand .mark {
  width: 30px;
  height: 30px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  color: var(--muted);
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 700;
  font-size: 14.5px;
  padding: 11px 20px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    opacity 0.15s ease;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--grad);
  color: #04201d;
}

.btn-primary:hover {
  opacity: 0.92;
}

.btn-ghost {
  border-color: var(--border);
  color: var(--text);
  background: var(--panel);
}

.btn-ghost:hover {
  border-color: #2c3137;
}

.btn-lg {
  padding: 15px 28px;
  font-size: 16px;
}

@media (max-width: 720px) {
  .nav-links a:not(.btn) {
    display: none;
  }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 72px;
  text-align: center;
}

.hero::before {
  content: "";
  position: absolute;
  top: -260px;
  left: 50%;
  transform: translateX(-50%);
  width: 760px;
  height: 760px;
  background: radial-gradient(
    circle,
    rgba(13, 148, 136, 0.28) 0%,
    rgba(13, 148, 136, 0) 62%
  );
  pointer-events: none;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--teal);
  border: 1px solid rgba(45, 212, 191, 0.25);
  background: rgba(45, 212, 191, 0.07);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 26px;
}

.eyebrow .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 10px var(--teal);
}

.hero h1 {
  font-size: clamp(38px, 6vw, 66px);
  line-height: 1.04;
  letter-spacing: -1.6px;
  font-weight: 850;
  margin: 0 auto 22px;
  max-width: 14ch;
}

.hero p.sub {
  font-size: clamp(16px, 2.1vw, 20px);
  color: var(--muted);
  max-width: 56ch;
  margin: 0 auto 38px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.trust-line {
  margin-top: 30px;
  color: var(--muted-2);
  font-size: 13px;
}

/* ---------- Chains strip ---------- */
.chains {
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 26px 0;
}

.chains .wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 30px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}

.chip i {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

/* ---------- Sections ---------- */
.section {
  padding: 88px 0;
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  letter-spacing: -1px;
  line-height: 1.1;
  margin: 0 0 16px;
  font-weight: 820;
}

.section-head p {
  color: var(--muted);
  font-size: 17px;
  margin: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

@media (max-width: 880px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

.card {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.035),
    rgba(255, 255, 255, 0.01)
  );
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition:
    border-color 0.18s ease,
    transform 0.18s ease;
}

.card:hover {
  border-color: rgba(45, 212, 191, 0.35);
  transform: translateY(-3px);
}

.card .ic {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: rgba(45, 212, 191, 0.1);
  border: 1px solid rgba(45, 212, 191, 0.2);
  margin-bottom: 18px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 19px;
  letter-spacing: -0.3px;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* steps */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  counter-reset: step;
}

@media (max-width: 880px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  position: relative;
}

.step .num {
  font-size: 13px;
  font-weight: 800;
  color: var(--teal);
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* CTA band */
.cta-band {
  text-align: center;
  border: 1px solid rgba(45, 212, 191, 0.22);
  border-radius: 24px;
  padding: 64px 28px;
  background:
    radial-gradient(
      circle at 50% 0%,
      rgba(13, 148, 136, 0.18),
      transparent 70%
    ),
    var(--bg-2);
}

.cta-band h2 {
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -1px;
  margin: 0 0 14px;
  font-weight: 840;
}

.cta-band p {
  color: var(--muted);
  font-size: 17px;
  max-width: 48ch;
  margin: 0 auto 30px;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 54px 0 40px;
  margin-top: 20px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.footer .brand {
  margin-bottom: 14px;
}

.footer .blurb {
  color: var(--muted-2);
  font-size: 14px;
  max-width: 34ch;
}

.foot-cols {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}

.foot-col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted-2);
  margin: 0 0 14px;
}

.foot-col a {
  display: block;
  color: var(--muted);
  font-size: 14.5px;
  margin-bottom: 10px;
  transition: color 0.15s ease;
}

.foot-col a:hover {
  color: var(--text);
}

.footer-bottom {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--muted-2);
  font-size: 13px;
}

/* ---------- Legal / doc pages ---------- */
.doc {
  max-width: 820px;
  margin: 0 auto;
  padding: 64px 24px 96px;
}

.doc h1 {
  font-size: clamp(32px, 5vw, 46px);
  letter-spacing: -1.2px;
  margin: 0 0 10px;
  font-weight: 840;
}

.doc .updated {
  color: var(--muted-2);
  font-size: 14px;
  margin-bottom: 40px;
}

.doc h2 {
  font-size: 22px;
  letter-spacing: -0.4px;
  margin: 40px 0 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.doc h3 {
  font-size: 17px;
  margin: 26px 0 10px;
}

.doc p,
.doc li {
  color: var(--muted);
  font-size: 15.5px;
}

.doc ul {
  padding-left: 22px;
}

.doc li {
  margin-bottom: 10px;
}

.doc a {
  color: var(--teal);
}

.doc a:hover {
  text-decoration: underline;
}

.doc a.btn-primary {
  color: #04201d;
}

.doc a.btn:hover {
  text-decoration: none;
  opacity: 0.92;
}

.toc {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 40px;
}

.toc strong {
  display: block;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted-2);
  margin-bottom: 12px;
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 24px;
}

@media (max-width: 620px) {
  .toc ul {
    grid-template-columns: 1fr;
  }
}

.toc a {
  color: var(--muted);
  font-size: 14px;
}

.toc a:hover {
  color: var(--teal);
}

.callout {
  border: 1px solid rgba(45, 212, 191, 0.22);
  background: rgba(45, 212, 191, 0.05);
  border-radius: 12px;
  padding: 18px 20px;
  margin: 24px 0;
  color: var(--text);
  font-size: 15px;
}

/* support specific */
.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 36px 0;
}

@media (max-width: 720px) {
  .support-grid {
    grid-template-columns: 1fr;
  }
}

.faq {
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
}

.faq summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 650;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.faq summary::after {
  content: "+";
  color: var(--teal);
  font-size: 22px;
  font-weight: 400;
  transition: transform 0.2s ease;
}

.faq[open] summary::after {
  transform: rotate(45deg);
}

.faq .faq-body {
  padding: 0 20px 18px;
  color: var(--muted);
  font-size: 15px;
}