:root {
  --bg: #0b0d12;
  --card: #141823;
  --card-2: #1a1f2c;
  --text: #f4f5f7;
  --muted: #9aa0aa;
  --border: rgba(255,255,255,.07);
  --accent: #7c5cff;
  --accent-2: #5cd5ff;
  --ok: #4cd789;
  --danger: #ff6b6b;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 15px/1.55 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  background:
    radial-gradient(900px 600px at 88% -10%, rgba(124,92,255,.22), transparent 60%),
    radial-gradient(800px 600px at -10% 100%, rgba(92,213,255,.18), transparent 60%),
    var(--bg);
  color: var(--text);
  min-height: 100vh;
}
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.small { font-size: 12px; }
.muted { color: var(--muted); }

.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
  backdrop-filter: blur(10px);
  background: rgba(11,13,18,.6);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 600; }
.brand .pro { background: linear-gradient(135deg, var(--accent), var(--accent-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.site-header nav a { color: var(--muted); margin-left: 18px; text-decoration: none; font-size: 14px; }
.site-header nav a:hover { color: var(--text); }

main { max-width: 880px; margin: 0 auto; padding: 40px 24px 80px; }

.hero { text-align: left; }
.eyebrow {
  display: inline-block;
  font-size: 12px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-2);
  padding: 4px 10px; border-radius: 999px;
  border: 1px solid rgba(92,213,255,.35);
  background: rgba(92,213,255,.08);
}
h1 { font-size: clamp(28px, 4vw, 44px); line-height: 1.1; letter-spacing: -.01em; margin: 14px 0 10px; }
.lede { color: var(--muted); max-width: 620px; margin: 0 0 24px; font-size: 16px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 22px;
  margin-bottom: 18px;
}
.pay-card { padding: 8px; }

.step {
  display: grid; grid-template-columns: 40px 1fr; gap: 14px;
  padding: 16px;
  border-radius: 14px;
}
.step + .step { border-top: 1px solid var(--border); }
.num {
  width: 28px; height: 28px; border-radius: 50%;
  background: rgba(124,92,255,.15);
  color: #c7baff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 13px;
  border: 1px solid rgba(124,92,255,.35);
  margin-top: 2px;
}
.step h3 { margin: 0 0 8px; font-size: 15px; }

.chains { display: flex; gap: 8px; margin-bottom: 6px; flex-wrap: wrap; }
.chains.tokens { margin-bottom: 0; margin-top: 4px; }
.chip {
  background: var(--card-2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 13px;
  cursor: pointer;
}
.chip:hover { border-color: var(--accent); }
.chip.active {
  background: linear-gradient(135deg, rgba(124,92,255,.25), rgba(92,213,255,.25));
  border-color: rgba(255,255,255,.2);
  color: #fff;
}

.actions { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }

button.primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0d12;
  border: 0;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
}
button.primary:disabled { opacity: .55; cursor: not-allowed; filter: grayscale(.3); }
button.secondary {
  background: var(--card-2);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 10px;
  cursor: pointer;
}
button.secondary:hover { border-color: var(--accent); }

.license-row { display: flex; gap: 8px; margin: 8px 0; }
.license-row input {
  flex: 1;
  background: #0c0e13;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font: 13px/1 ui-monospace, monospace;
  letter-spacing: .3px;
}

.info ol, .info ul { margin: 0; padding-left: 22px; color: var(--muted); }
.info li { margin: 6px 0; }
.info h2 { margin: 0 0 14px; font-size: 17px; }
.info details { border-top: 1px solid var(--border); padding: 10px 0; }
.info details:first-of-type { border-top: 0; }
.info summary { cursor: pointer; color: var(--text); padding: 4px 0; }
.info details p { color: var(--muted); margin: 6px 0 0; }

.receiver { margin-top: 12px; }

.site-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 32px; color: var(--muted); border-top: 1px solid var(--border);
}

@media (max-width: 540px) {
  .site-header { padding: 14px 18px; }
  main { padding: 24px 16px 60px; }
  .step { grid-template-columns: 30px 1fr; padding: 12px; }
}