:root {
  --paper: #f4eee4;
  --paper-2: #efe6d6;
  --ink: #1b1712;
  --ink-soft: #5b5348;
  --rule: #e3d6c3;
  --line: #d7c8b0;
  --teal: #0f5f58;
  --teal-2: #147a70;
  --stamp: #b42318;
  --paid: #1f7a4d;
  --gold: #b8892d;
  --warn: #c2410c;
  --white: #fffdf8;
  --shadow: 0 18px 40px rgba(27, 23, 18, 0.12);
  --serif: "Fraunces", "Songti SC", "Noto Serif SC", serif;
  --sans: "Figtree", "PingFang SC", "Noto Sans SC", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
img { max-width: 100%; display: block; }

.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.03em;
}
.mark {
  width: 28px;
  height: 28px;
  border: 2px solid var(--ink);
  border-radius: 4px;
  display: grid;
  place-items: center;
  font-size: 13px;
  transform: rotate(-8deg);
  background: var(--gold);
}
.nav { display: flex; gap: 22px; align-items: center; color: var(--ink-soft); font-size: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1.5px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
  border-radius: 999px;
  padding: 10px 18px;
  cursor: pointer;
  font-weight: 600;
}
.btn.ghost { background: transparent; color: var(--ink); }
.btn.teal { background: var(--teal); border-color: var(--teal); color: #f6fffd; }
.btn.warn { background: var(--stamp); border-color: var(--stamp); color: #fff; }
.btn.full { width: 100%; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  padding: 28px 0 70px;
  align-items: center;
}
.kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  font-weight: 700;
}
h1 {
  font-family: var(--serif);
  font-size: clamp(40px, 6vw, 72px);
  line-height: 0.95;
  letter-spacing: -0.04em;
  margin: 10px 0 18px;
  font-weight: 620;
}
.lede { font-size: 18px; color: var(--ink-soft); max-width: 46ch; }
.hero-actions { display: flex; gap: 12px; margin: 28px 0 18px; flex-wrap: wrap; }
.price-note { font-size: 13px; color: var(--ink-soft); }
.hero-papers { position: relative; height: 460px; }
.paper-card {
  position: absolute;
  width: 310px;
  background: var(--white);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 22px 22px 18px;
  border-radius: 4px;
}
.paper-card.one { right: 40px; top: 18px; transform: rotate(4deg); }
.paper-card.two { right: 86px; top: 92px; transform: rotate(-6deg); z-index: 2; }
.inv-top { display: flex; justify-content: space-between; font-size: 12px; color: var(--ink-soft); }
.inv-client { font-family: var(--serif); font-size: 22px; margin: 16px 0 4px; }
.inv-amt { font-size: 28px; font-weight: 700; letter-spacing: -0.04em; }
.stamp {
  position: absolute;
  right: 18px;
  bottom: 22px;
  border: 3px solid var(--stamp);
  color: var(--stamp);
  font-weight: 800;
  letter-spacing: 0.12em;
  padding: 4px 10px;
  transform: rotate(-12deg);
  font-size: 13px;
  border-radius: 4px;
}
.stamp.paid { color: var(--paid); border-color: var(--paid); }
.row { display: flex; justify-content: space-between; font-size: 13px; padding: 6px 0; border-bottom: 1px dashed var(--rule); }

.strip {
  background: var(--ink);
  color: var(--paper);
  padding: 28px 0;
}
.strip .wrap { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.quote { font-family: var(--serif); font-size: 20px; line-height: 1.25; margin: 0 0 10px; }
.who { font-size: 12px; opacity: 0.7; }

.section { padding: 72px 0; }
.section h2 {
  font-family: var(--serif);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: -0.03em;
  margin: 0 0 10px;
}
.sub { color: var(--ink-soft); margin: 0 0 28px; max-width: 60ch; }
.three { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.screen {
  background: var(--white);
  border: 1px solid var(--line);
  min-height: 280px;
  padding: 18px;
  box-shadow: var(--shadow);
}
.screen h3 { margin: 0 0 8px; font-size: 16px; }
.pill {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
  padding: 3px 8px;
  border-radius: 999px;
  margin-bottom: 12px;
  color: var(--ink-soft);
}
.mini-row { display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px solid var(--rule); font-size: 13px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); display: inline-block; }
.bad { color: var(--stamp); font-weight: 700; }
.ok { color: var(--paid); font-weight: 700; }

.fx {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: center;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 36px;
}
.big-num {
  font-family: var(--serif);
  font-size: 84px;
  line-height: 0.85;
  letter-spacing: -0.05em;
}
.pricing { display: grid; grid-template-columns: 1fr 1.15fr; gap: 16px; }
.price-card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 28px;
}
.price-card.featured { background: var(--teal); color: #f4fffc; border-color: var(--teal); }
.price-card .amt { font-family: var(--serif); font-size: 56px; letter-spacing: -0.05em; margin: 8px 0; }
.price-card ul { padding-left: 18px; color: inherit; opacity: 0.9; }
.compare { font-size: 13px; opacity: 0.8; margin-top: 12px; }

footer { border-top: 1px solid var(--line); padding: 28px 0 48px; color: var(--ink-soft); font-size: 13px; display: flex; justify-content: space-between; }

.app-shell { min-height: 100vh; display: grid; grid-template-rows: auto 1fr; }
.app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(244, 238, 228, 0.92);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 8;
  flex-wrap: wrap;
}
.app-bar .tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.app-bar .right-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.tab {
  border: 0;
  background: transparent;
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--ink-soft);
}
.tab.active { background: var(--ink); color: var(--paper); }
.app-main { width: min(1100px, calc(100% - 36px)); margin: 22px auto 60px; }
.panel { display: none; }
.panel.show { display: block; }
.grid-2 { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 22px; }
label { display: block; font-size: 12px; font-weight: 700; letter-spacing: 0.04em; margin: 12px 0 6px; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--white);
  padding: 10px 12px;
  border-radius: 6px;
  outline: none;
}
textarea { min-height: 72px; resize: vertical; }
.items { width: 100%; border-collapse: collapse; font-size: 13px; }
.items th { text-align: left; font-size: 11px; color: var(--ink-soft); padding: 6px 4px; }
.items td { padding: 4px; }
.items input { padding: 8px; }
.preview {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 26px;
  min-height: 520px;
  position: relative;
  box-shadow: var(--shadow);
}
.toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.stat-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 18px; }
.stat {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 16px 18px;
}
.stat b { display: block; font-family: var(--serif); font-size: 28px; letter-spacing: -0.04em; }
.list { display: flex; flex-direction: column; gap: 10px; }
.card {
  background: var(--white);
  border: 1px solid var(--line);
  padding: 16px 18px;
  display: grid;
  grid-template-columns: 1.4fr 1fr auto;
  gap: 12px;
  align-items: center;
}
.client { font-family: var(--serif); font-size: 20px; margin: 0; }
.meta { font-size: 12px; color: var(--ink-soft); }
.amt { font-size: 22px; font-weight: 700; letter-spacing: -0.03em; }
.chase { display: flex; gap: 6px; margin-top: 8px; }
.step {
  font-size: 11px;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}
.step.on { background: var(--teal); color: #fff; border-color: var(--teal); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.table { width: 100%; border-collapse: collapse; background: var(--white); }
.table th, .table td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--rule); font-size: 14px; }
.table th { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); }
.modal-bg {
  position: fixed; inset: 0; background: rgba(27,23,18,0.45);
  display: none; align-items: center; justify-content: center; z-index: 20; padding: 20px;
}
.modal-bg.show { display: flex; }
.modal {
  width: min(560px, 100%);
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 22px;
  max-height: 90vh;
  overflow: auto;
}
.mail { background: var(--white); border: 1px solid var(--line); padding: 14px; white-space: pre-wrap; font-size: 13px; }
.hint { font-size: 12px; color: var(--ink-soft); }
.empty { padding: 40px; text-align: center; color: var(--ink-soft); background: var(--white); border: 1px dashed var(--line); }

.io-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.io-block { background: var(--white); border: 1px solid var(--line); padding: 18px; }
.io-block h3 { margin: 0 0 6px; font-family: var(--serif); }
.fmt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 12px; }
.fmt-grid .btn { width: 100%; }
#importPaste { min-height: 140px; margin-top: 10px; font-family: var(--mono); font-size: 12px; }

.pay-page { width: min(720px, calc(100% - 32px)); margin: 40px auto 80px; }
.pay-box { background: var(--white); border: 1px solid var(--line); padding: 28px; box-shadow: var(--shadow); }
.card-form { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 12px; }
.stripe-bar { height: 6px; background: linear-gradient(90deg, #635bff, #00d4ff); margin: -28px -28px 20px; }

@media (max-width: 900px) {
  .hero, .grid-2, .three, .pricing, .fx, .strip .wrap, .card, .card-form, .io-grid, .fmt-grid { grid-template-columns: 1fr; }
  .hero-papers { height: 300px; }
  .paper-card { width: 260px; }
  .paper-card.one { right: 8px; }
  .nav { display: none; }
  .big-num { font-size: 56px; }
  .app-bar { flex-wrap: wrap; gap: 10px; }
}