:root {
  color-scheme: light dark;
  --bg: #f5f3ee;
  --surface: #ece9e1;
  --ink: #1c2027;
  --muted: #545b66;
  --accent: #1f5fc4;
  --accent-ink: #f7f9fd;
  --ring: #1f5fc4;
  --line: #d8d3c7;
  --ok: #1d6b45;
  --error: #a32a22;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15181d;
    --surface: #1d2128;
    --ink: #e9e7e2;
    --muted: #a6acb5;
    --accent: #6ea2f5;
    --accent-ink: #0f1a2c;
    --ring: #8db7f8;
    --line: #2c323b;
    --ok: #6fcf9b;
    --error: #f08a80;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 16px/1.4 var(--sans);
}

.page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 16px;
}

header.page {
  padding-top: 64px;
  padding-bottom: 32px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 16px;
  font-size: 44px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 700;
}

h2 {
  margin: 0 0 16px;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  font-weight: 600;
}

h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.lead {
  margin: 0;
  font-size: 18px;
  color: var(--muted);
  max-width: 38rem;
}

section {
  padding: 32px 0;
}

.demo {
  margin: 0 -16px;
  padding: 32px 16px;
  background: var(--surface);
  border-radius: 16px;
}

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 32px;
  counter-reset: step;
}

.step {
  counter-increment: step;
  display: grid;
  gap: 8px;
}

.step-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 44px;
}

.step-head h3::before {
  content: counter(step) ". ";
  color: var(--muted);
}

.step-body {
  margin: 0;
  color: var(--muted);
  overflow-wrap: anywhere;
}

.step-body[data-state="ok"] {
  color: var(--ok);
}

.step-body[data-state="error"],
.response[data-state="error"] {
  color: var(--error);
}

button {
  min-width: 96px;
  min-height: 44px;
  padding: 8px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  font: 600 16px/1.4 var(--sans);
  cursor: pointer;
  transition: transform 120ms ease-out, opacity 120ms ease-out;
}

button:active:not(:disabled) {
  transform: scale(0.96);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

button.quiet {
  margin-top: 16px;
  background: transparent;
  color: var(--accent);
  box-shadow: inset 0 0 0 1px var(--line);
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
}

.call-form {
  display: grid;
  gap: 8px;
}

.call-form label {
  font-size: 14px;
  color: var(--muted);
}

.call-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.call-row input {
  flex: 1 1 16rem;
  min-width: 0;
  min-height: 44px;
  padding: 8px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--bg);
  color: var(--ink);
  font: 400 15px/1.4 var(--mono);
  box-shadow: inset 0 0 0 1px var(--line);
}

.response,
.code {
  margin: 0;
  padding: 16px;
  border-radius: 8px;
  background: var(--bg);
  font: 400 14px/1.4 var(--mono);
  overflow-x: auto;
}

.response {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.code {
  background: var(--surface);
  white-space: pre;
}

.ledger {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 16px;
  margin: 32px 0 0;
}

.ledger dt {
  font-size: 14px;
  color: var(--muted);
}

.ledger dd {
  margin: 4px 0 0;
  font: 600 20px/1.4 var(--mono);
  font-variant-numeric: tabular-nums;
}

#stats {
  margin-top: 0;
}

.how {
  margin: 0;
  padding-left: 24px;
  display: grid;
  gap: 8px;
  max-width: 40rem;
}

code {
  font-family: var(--mono);
  font-size: 0.92em;
}

a {
  color: var(--accent);
  border-radius: 2px;
}

.contract {
  overflow-wrap: anywhere;
  font-size: 14px;
  color: var(--muted);
}

footer.page {
  padding-top: 32px;
  padding-bottom: 64px;
  color: var(--muted);
  font-size: 14px;
}