/* Public site. Deliberately not the operator dashboard: a cool paper ground,
   monospace as the display face (this product is about hex, block numbers and
   exact integers), and the two accents that carry the product's central
   distinction — amber for "seen, provisional", teal for "final". */

:root {
  --paper: #eef0f4;
  --paper-2: #ffffff;
  --band: #e6e9ef;
  --ink: #101620;
  --ink-2: #5a6474;
  --line: #d3d8e1;
  --teal: #0d7d72;
  --teal-ink: #06231f;
  --amber: #a45c07;
  --shadow: 0 1px 2px rgba(16, 22, 32, .05);

  --mono: ui-monospace, "SF Mono", SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "Helvetica Neue", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #101620;
    --paper-2: #171d29;
    --band: #141a25;
    --ink: #e8ebf1;
    --ink-2: #98a2b3;
    --line: #29313f;
    --teal: #4fd1c2;
    --teal-ink: #06231f;
    --amber: #f0b24a;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; }
b { font-weight: 620; }
code { font-family: var(--mono); font-size: .88em; }

:focus-visible { outline: 2px solid var(--teal); outline-offset: 3px; border-radius: 3px; }

.shell { max-width: 1040px; margin: 0 auto; padding: 76px 24px; }
.shell.narrow { max-width: 660px; }

/* --- header / footer ------------------------------------------------------ */

.site-head {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-head-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 12px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
}
.wordmark, .wordmark-sm {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--ink);
}
.wordmark { font-size: 18px; }
.wordmark-sm { font-size: 14px; }
.wordmark:hover { text-decoration: none; }
.beta {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--amber);
  border: 1px solid color-mix(in srgb, var(--amber) 45%, transparent);
  background: color-mix(in srgb, var(--amber) 10%, transparent);
  border-radius: 999px;
  padding: 2px 8px;
  white-space: nowrap;
}
.site-nav { display: flex; gap: 20px; flex: 1; font-size: 14.5px; }
.site-nav a { color: var(--ink-2); }
.site-nav a:hover { color: var(--ink); text-decoration: none; }

.site-foot { border-top: 1px solid var(--line); }
.site-foot-inner {
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 24px 40px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 13.5px;
  color: var(--ink-2);
}
.foot-note { flex: 1; }

/* --- buttons -------------------------------------------------------------- */

.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -.01em;
  padding: 11px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--teal); color: var(--teal-ink); }
.btn-primary:hover { background: color-mix(in srgb, var(--teal) 86%, var(--ink)); }
.btn-ghost { border-color: var(--line); color: var(--ink); background: var(--paper-2); }
.btn-ghost:hover { border-color: var(--ink-2); }
.btn-sm { padding: 7px 14px; font-size: 13px; }

/* --- type ----------------------------------------------------------------- */

.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 18px;
}
.hero-title, .page-title {
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: -.035em;
  line-height: 1.08;
  margin: 0 0 20px;
  text-wrap: balance;
}
.hero-title { font-size: clamp(30px, 5.2vw, 54px); max-width: 17ch; }
.page-title { font-size: clamp(26px, 4.4vw, 38px); }
.hero-sub { font-size: 17.5px; color: var(--ink-2); max-width: 62ch; margin: 0 0 28px; }
.hero-sub b { color: var(--ink); }
.section-title {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 26px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.lede { color: var(--ink-2); max-width: 62ch; margin: 0 0 16px; }
.lede code { color: var(--ink); }

/* --- hero ledger: the signature ------------------------------------------- */

.hero { padding-top: 8px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 52px; }

.ledger {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.ledger-row {
  display: grid;
  grid-template-columns: 116px 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 15px 20px;
  border-bottom: 1px solid var(--line);
}
.ledger-row.is-last { border-bottom: none; }
.ledger-step {
  font-family: var(--mono);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.ledger-body {
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--ink);
  overflow-wrap: anywhere;
}
.ledger-body .dim { color: var(--ink-2); }
.ledger-body .arrow { color: var(--ink-2); padding: 0 10px; }
.ledger-body .count { font-variant-numeric: tabular-nums; color: var(--amber); font-weight: 600; }
.ledger-note { font-size: 12.5px; color: var(--ink-2); text-align: right; }

.state {
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid;
  white-space: nowrap;
}
.state-pending { color: var(--amber); border-color: color-mix(in srgb, var(--amber) 45%, transparent); }
.state-final { color: var(--teal); border-color: color-mix(in srgb, var(--teal) 45%, transparent); }

/* Строка доставки появляется только когда депозит стал финальным — как в жизни. */
.ledger.is-running #delivery { opacity: 0; }
.ledger.is-settled #delivery { opacity: 1; transition: opacity .5s ease .1s; }
.ledger.is-settled .ledger-body .count { color: var(--teal); }

.ledger-caption { margin: 14px 2px 0; font-size: 13.5px; color: var(--ink-2); max-width: 60ch; }

/* --- bands ---------------------------------------------------------------- */

.band { background: var(--band); border-block: 1px solid var(--line); }

/* --- steps ---------------------------------------------------------------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(215px, 1fr));
  gap: 28px 32px;
}
.steps li { border-top: 2px solid var(--ink); padding-top: 14px; }
.step-no {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .1em;
  color: var(--ink-2);
}
.steps h3 { font-size: 16.5px; font-weight: 620; margin: 6px 0 8px; letter-spacing: -.01em; }
.steps p { margin: 0; font-size: 14.5px; color: var(--ink-2); }

/* --- tiles ---------------------------------------------------------------- */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
  gap: 16px;
}
.tile {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  box-shadow: var(--shadow);
}
.tile h3 { font-size: 15.5px; font-weight: 620; margin: 0 0 8px; letter-spacing: -.01em; }
.tile p { margin: 0; font-size: 14.5px; color: var(--ink-2); }

/* --- webhook -------------------------------------------------------------- */

.wide-split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 40px; align-items: start; }
.wide-split .section-title { grid-column: 1 / -1; }
.code-panel {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.code-head {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-2);
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--band);
}
pre.code {
  margin: 0;
  padding: 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--ink);
  overflow-x: auto;
}
pre.code .k { color: var(--teal); }

/* --- networks ------------------------------------------------------------- */

.nets { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 16px; margin-bottom: 22px; }
.net { border-left: 2px solid var(--teal); padding: 2px 0 2px 16px; }
.net.net-muted { border-left-color: var(--line); }
.net h3 { font-size: 16px; font-weight: 620; margin: 0 0 4px; }
.net-assets { font-family: var(--mono); font-size: 14px; margin: 0 0 4px; }
.net-note { font-size: 13px; color: var(--ink-2); margin: 0; }

/* --- cta ------------------------------------------------------------------ */

.cta { background: var(--band); border-top: 1px solid var(--line); }
.cta h2 { font-family: var(--mono); font-size: clamp(22px, 3.4vw, 30px); font-weight: 600; letter-spacing: -.03em; margin: 0 0 14px; }
.cta .lede { margin-bottom: 26px; }

/* --- signup --------------------------------------------------------------- */

.panel-card, .aside-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 24px;
  box-shadow: var(--shadow);
  margin-top: 24px;
}
.aside-card { background: none; box-shadow: none; }
.panel-title {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 16px;
}
.aside-card p { margin: 0 0 16px; color: var(--ink-2); font-size: 14.5px; }
.checklist { list-style: none; margin: 0 0 22px; padding: 0; }
.checklist li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 14.5px;
  color: var(--ink-2);
}
.checklist li b { color: var(--ink); }
.checklist li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--teal);
  font-family: var(--mono);
}
.panel-note { margin: 14px 0 0; font-size: 13.5px; color: var(--ink-2); }

/* --- narrow --------------------------------------------------------------- */

@media (max-width: 760px) {
  .shell { padding: 52px 20px; }
  .site-head-inner { padding: 10px 20px; gap: 12px; }
  .site-nav { display: none; }
  .hero-title { max-width: none; }
  .wordmark { flex: 1; }
  .wide-split { grid-template-columns: 1fr; gap: 26px; }
  .ledger-row { grid-template-columns: 1fr auto; row-gap: 6px; }
  .ledger-body { grid-column: 1 / -1; }
  .ledger-note, .state { text-align: left; }
}