:root {
  --bg: #f5eee6;
  --paper: #fffcf8;
  --ink: #1a1916;
  --muted: #6d6860;
  --line: #e4e0d8;
  --soft: #eeece6;
  --good: #1f6b45;
  --bad: #8d3a32;
  --shadow: 0 24px 60px rgba(26, 25, 22, 0.06);
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: "Outfit", "Avenir Next", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
}
a { color: inherit; text-decoration: none; }
button, input { font: inherit; color: inherit; }
button { cursor: pointer; }

.wrap {
  width: min(1080px, calc(100% - 2.4rem));
  margin: 0 auto;
}
.narrow {
  width: min(720px, calc(100% - 2.4rem));
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.35rem 0 0.4rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.coin {
  width: 1.85rem;
  height: 1.85rem;
  border-radius: 50%;
  background: url("coin.png") center / 128% no-repeat;
  box-shadow: 0 1px 2px rgba(90, 62, 20, 0.18);
  flex: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  color: var(--muted);
  font-size: 0.94rem;
}
.nav-links a:hover { color: var(--ink); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  padding: 0 1.05rem;
  border-radius: 999px;
  border: 1px solid transparent;
  background: var(--ink);
  color: #f7f4ee;
  letter-spacing: -0.01em;
}
.btn:hover { background: #000; }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line);
}
.btn.ghost:hover { background: #fff; }
.btn:disabled { opacity: 0.45; cursor: default; }

.hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.2rem 0 3.4rem;
}
.coin-hero {
  width: min(26rem, 86vw);
  height: auto;
  margin: 0 0 0.2rem;
  display: block;
}
.kicker {
  margin: 0 0 0.9rem;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
h1 {
  margin: 0;
  max-width: 12ch;
  font-family: var(--serif);
  font-weight: 520;
  font-size: clamp(3rem, 6vw, 4.8rem);
  line-height: 0.96;
  letter-spacing: -0.035em;
}
.lede {
  max-width: 34rem;
  margin: 1.15rem auto 0;
  color: var(--muted);
  font-size: 1.12rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.7rem;
}
.hero .hero-actions { justify-content: center; }

.facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.facts div { padding: 1.35rem 1.2rem 1.35rem 0; }
.facts strong {
  display: block;
  font-size: 1.02rem;
  font-weight: 500;
  letter-spacing: -0.02em;
}
.facts span { color: var(--muted); font-size: 0.92rem; }

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding: 4.2rem 0;
}
.steps article {
  padding-top: 0.2rem;
}
.num {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
}
.steps h2, .panel h2, .dash h2 {
  margin: 0.35rem 0 0.4rem;
  font-family: var(--serif);
  font-weight: 520;
  font-size: 1.7rem;
  letter-spacing: -0.03em;
}
.steps p, .panel p { margin: 0; color: var(--muted); }

.panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 1.4rem;
  padding: 1.6rem;
  box-shadow: var(--shadow);
  margin-bottom: 4.5rem;
}
.code {
  margin: 0;
  padding: 1.2rem 1.15rem;
  border-radius: 1rem;
  background: #171614;
  color: #f3eee6;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.82rem;
  line-height: 1.7;
  overflow: auto;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.code em { color: #d7c4a1; font-style: normal; }

.close {
  padding: 0 0 4rem;
}
.close h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 520;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.035em;
  line-height: 1;
}
.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 0 2rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.dash { padding: 2.2rem 0 4rem; }
.balance {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 1.5rem;
  padding: 1.6rem 1.5rem 1.35rem;
  box-shadow: var(--shadow);
}
.balance .label { margin: 0; color: var(--muted); font-size: 0.92rem; }
.amount {
  margin: 0.2rem 0 0;
  font-family: var(--serif);
  font-weight: 520;
  font-size: clamp(3.2rem, 8vw, 4.6rem);
  letter-spacing: -0.04em;
  line-height: 0.95;
}
.equiv { margin: 0.45rem 0 0; color: var(--muted); }
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.3rem;
}
.card {
  margin-top: 1rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  padding: 0.4rem 1.15rem;
}
.card h2 {
  font-family: var(--sans);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0;
  margin: 0.85rem 0 0.2rem;
}
.item, .empty {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--line);
}
.item:first-of-type, .card h2 + .item, .card h2 + .empty { border-top: 0; }
.item small, .empty { color: var(--muted); }
.plus { color: var(--good); }
.minus { color: var(--ink); }
.keyline {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: 0.85rem 0 1rem;
  border-top: 1px solid var(--line);
}
.keyline code {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 0.86rem;
}
.form {
  display: grid;
  gap: 0.65rem;
  padding-bottom: 1rem;
}
.form label { font-size: 0.82rem; color: var(--muted); }
.form input {
  width: 100%;
  margin-top: 0.25rem;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 0.8rem;
  min-height: 2.7rem;
  padding: 0 0.8rem;
}
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chips button, .text-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  min-height: 2.2rem;
  padding: 0 0.8rem;
}
.note {
  min-height: 1.2rem;
  margin: 0.2rem 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}
.hidden { display: none; }

@media (max-width: 800px) {
  .hero, .panel, .steps, .facts { grid-template-columns: 1fr; }
  .hero { padding-top: 0.4rem; }
  .nav-links span { display: none; }
  .facts div { padding-right: 0; }
  .footer { flex-direction: column; }
}