:root {
  --green-950: #09291d;
  --green-900: #0d3525;
  --green-800: #124a34;
  --green-700: #176044;
  --green-100: #e8f1eb;
  --green-50: #f3f7f4;
  --ink: #17211c;
  --muted: #66716b;
  --line: #dce4df;
  --line-strong: #b8c7bd;
  --paper: #fff;
  --danger: #9b2d2d;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, input { font: inherit; }

.public-top {
  min-height: 72px;
  padding: 0 max(22px, calc((100vw - 1040px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
}

.public-top img {
  width: auto;
  height: 38px;
  display: block;
}

.public-top a {
  color: var(--green-700);
  font-size: 13px;
  font-weight: 800;
}

.payment-shell {
  width: min(1040px, calc(100% - 40px));
  margin: 0 auto;
  padding: 54px 0 80px;
  flex: 1;
}

.payment-intro {
  max-width: 760px;
}

.payment-intro > p {
  margin: 0;
  color: var(--green-700);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.payment-intro h1 {
  margin: 9px 0 10px;
  color: var(--green-950);
  font-size: clamp(36px, 6vw, 62px);
  line-height: 1;
  letter-spacing: -.05em;
}

.payment-intro > span {
  color: var(--muted);
  font-size: 16px;
}

.payment-content,
.tracking-form,
.tracking-result {
  margin-top: 38px;
  border-top: 1px solid var(--line);
}

.loading,
.error-message,
.payment-message {
  padding: 26px 0;
  color: var(--muted);
}

.error-message { color: var(--danger); }

.payment-status {
  padding: 18px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
}

.payment-status span {
  color: var(--muted);
  font-size: 13px;
}

.payment-status strong {
  color: var(--green-900);
}

.payment-lines {
  border-bottom: 1px solid var(--line);
}

.payment-line {
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  border-bottom: 1px solid var(--line);
}

.payment-line:last-child { border-bottom: 0; }

.payment-line span { color: var(--muted); }

.payment-line strong {
  color: var(--ink);
  text-align: right;
}

.payment-line.total {
  min-height: 68px;
}

.payment-line.total span,
.payment-line.total strong {
  color: var(--green-950);
  font-size: 19px;
  font-weight: 850;
}

.payment-actions {
  padding: 28px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.primary-button,
.tracking-form button {
  min-height: 48px;
  padding: 0 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green-900);
  border-radius: 7px;
  background: var(--green-900);
  color: #fff;
  cursor: pointer;
  font-weight: 800;
  text-decoration: none;
}

.secondary-link {
  color: var(--green-700);
  font-size: 13px;
  font-weight: 800;
}

.payment-notice {
  padding: 16px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

.payment-notice.warning {
  color: #765614;
}

.tracking-form {
  padding-top: 28px;
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 22px;
  align-items: end;
}

.tracking-form label {
  display: grid;
  gap: 7px;
}

.tracking-form label span {
  font-size: 12px;
  font-weight: 800;
}

.tracking-form input {
  width: 100%;
  min-height: 48px;
  padding: 10px 0;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  border-radius: 0;
  outline: 0;
  background: transparent;
}

.tracking-form input:focus {
  border-bottom-color: var(--green-700);
  box-shadow: 0 1px 0 var(--green-700);
}

#tracking-status {
  grid-column: 1 / -1;
  min-height: 20px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.tracking-result {
  padding-top: 24px;
}

footer {
  padding: 24px max(22px, calc((100vw - 1040px) / 2));
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  border-top: 1px solid var(--line);
  background: var(--green-50);
}

footer a {
  color: var(--green-800);
  font-size: 13px;
  font-weight: 750;
}

@media (max-width: 720px) {
  .payment-shell {
    width: min(100% - 30px, 660px);
    padding-top: 38px;
  }

  .tracking-form {
    grid-template-columns: 1fr;
  }

  #tracking-status {
    grid-column: 1;
  }

  .payment-status,
  .payment-line {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 12px 0;
  }

  .payment-line strong {
    text-align: left;
  }
}