:root {
  --ink: #102a43;
  --muted: #52667a;
  --teal: #087f7a;
  --teal-dark: #05605d;
  --coral: #ee6c4d;
  --cream: #fbf8f2;
  --line: #dce5e8;
  --white: #fff;
  --success: #18864b;
  --danger: #b42318;
  --shadow: 0 18px 50px rgba(16, 42, 67, 0.1);
  font-family:
    Inter,
    ui-sans-serif,
    system-ui,
    -apple-system,
    'Segoe UI',
    sans-serif;
  color: var(--ink);
  background: var(--cream);
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, var(--surface) 0, var(--cream) 70%);
  color: var(--ink);
}
a {
  color: var(--teal-dark);
  font-weight: 650;
  text-underline-offset: 3px;
}
button,
input,
select {
  font: inherit;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 8px;
}
.skip-link:focus {
  left: 8px;
  z-index: 99;
  background: var(--surface);
  color: var(--ink);
  padding: 10px;
}
.site-header {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  max-width: 1200px;
  margin: auto;
  padding: 12px 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 800;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--on-emphasis);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 22px;
}
.site-header nav a,
.nav-button {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.93rem;
}
.site-header form {
  margin: 0;
}
.nav-button {
  border: 0;
  background: none;
  cursor: pointer;
  padding: 0;
}
.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 46px;
  border: 0;
  border-radius: 12px;
  background: var(--teal);
  color: var(--on-accent);
  padding: 0 18px;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(8, 127, 122, 0.16);
  transition: 0.2s ease;
}
.button:hover,
button:hover {
  background: var(--teal-dark);
  transform: translateY(-1px);
}
.button-secondary {
  background: var(--interactive-muted);
  color: var(--teal-dark);
  box-shadow: none;
}
.button-danger {
  background: var(--danger-muted);
  color: var(--danger);
  box-shadow: none;
  border: 1px solid var(--danger-muted-strong);
}
.button-small {
  min-height: 38px;
  padding: 0 14px;
}
.button-link {
  background: none;
  color: var(--teal-dark);
  box-shadow: none;
  padding: 0;
  min-height: auto;
}
.eyebrow {
  display: inline-block;
  color: var(--teal-dark);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.76rem;
  font-weight: 850;
  text-decoration: none;
  margin-bottom: 10px;
}
h1,
h2,
h3 {
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin: 0 0 14px;
}
h1 {
  font-size: clamp(2.4rem, 5vw, 4.7rem);
}
h2 {
  font-size: clamp(1.65rem, 3vw, 2.45rem);
}
h3 {
  font-size: 1.13rem;
}
.lead {
  font-size: clamp(1.02rem, 2vw, 1.25rem);
  line-height: 1.65;
  color: var(--muted);
  max-width: 650px;
}
.muted,
.help {
  color: var(--muted);
  line-height: 1.55;
}
.hero {
  max-width: 1200px;
  margin: 20px auto 0;
  padding: 70px 24px 90px;
  min-height: 620px;
  display: flex;
  align-items: center;
  background: url('/static/purchase-ledger-hero-display.jpg?v=1') no-repeat right center/52% auto;
}
.hero-copy {
  max-width: 44%;
  position: relative;
  z-index: 1;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 28px 0;
}
.trust-row {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.9rem;
}
.trust-row span:before {
  content: '✓';
  color: var(--success);
  font-weight: 900;
  margin-right: 6px;
}
.section-wrap {
  max-width: 1120px;
  margin: auto;
  padding: 80px 24px;
}
.section-heading {
  max-width: 700px;
  margin-bottom: 34px;
}
.grid-3,
.stat-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(16, 42, 67, 0.05);
}
.icon-tile {
  width: 48px;
  height: 48px;
  border-radius: 15px;
  background: var(--surface-muted);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: 18px;
}
.auth-layout {
  min-height: calc(100vh - 148px);
  display: grid;
  grid-template-columns: minmax(390px, 560px) 1fr;
  max-width: 1280px;
  margin: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.auth-panel {
  padding: clamp(36px, 7vw, 84px);
  align-self: center;
}
.auth-panel h1 {
  font-size: clamp(2.2rem, 4vw, 3.7rem);
}
.auth-art {
  min-height: 650px;
  background: var(--illustration-surface) url('/static/purchase-ledger-hero-display.jpg?v=1') no-repeat center/cover;
}
.field {
  display: block;
  margin: 18px 0;
}
.field > span {
  display: block;
  font-weight: 750;
  margin-bottom: 7px;
}
.field input,
.field select {
  width: 100%;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  padding: 0 13px;
  color: var(--ink);
}
.field input:focus,
.field select:focus {
  outline: 3px solid color-mix(in srgb, var(--focus) 30%, transparent);
  border-color: var(--focus);
}
.auth-panel form > .button {
  width: 100%;
  margin-top: 10px;
}
.auth-switch {
  text-align: center;
  margin-top: 24px;
  color: var(--muted);
}
.password-rules {
  list-style: none;
  padding: 13px 15px;
  margin: 12px 0;
  background: var(--surface-muted);
  border-radius: 12px;
  color: var(--muted);
  font-size: 0.88rem;
}
.password-rules li {
  margin: 7px 0;
}
.password-rules li:before {
  content: '○';
  display: inline-block;
  width: 20px;
  font-weight: 900;
}
.password-rules li.met {
  color: var(--success);
}
.password-rules li.met:before {
  content: '✓';
}
.form-error {
  color: var(--danger);
  font-size: 0.9rem;
  min-height: 1.3em;
}
.app-shell {
  max-width: 1200px;
  margin: 16px auto 80px;
  padding: 0 24px;
}
.welcome {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 22px;
  padding: 40px 0 28px;
}
.welcome h1 {
  font-size: clamp(2.2rem, 4vw, 3.6rem);
}
.stat-card strong {
  font-size: 2rem;
  display: block;
  margin-bottom: 6px;
}
.quick-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  margin: 20px 0;
}
.action-card {
  display: flex;
  align-items: flex-start;
  gap: 18px;
}
.action-card .icon-tile {
  flex: none;
  margin: 0;
}
.retailer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
  margin: 22px 0;
}
.retailer-card {
  position: relative;
}
.retailer-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.retailer-card label {
  display: flex;
  min-height: 116px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 9px;
  background: var(--surface);
  border: 2px solid var(--line);
  border-radius: 16px;
  padding: 12px;
  cursor: pointer;
  font-weight: 750;
}
.retailer-card label span:first-child {
  font-size: 1.65rem;
}
.retailer-card input:checked + label {
  border-color: var(--teal);
  background: var(--interactive-muted);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--focus) 24%, transparent);
}
.retailer-card input:focus + label {
  outline: 3px solid color-mix(in srgb, var(--focus) 30%, transparent);
}
.next-steps {
  display: none;
  background: var(--surface-muted);
  border-left: 4px solid var(--teal);
  padding: 20px;
  border-radius: 0 14px 14px 0;
  margin: 20px 0;
}
.next-steps.visible {
  display: block;
}
.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 25px 0;
}
.steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 14px;
  margin: 18px 0;
  align-items: start;
}
.steps li:before {
  content: counter(step);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--teal);
  color: var(--on-accent);
  display: grid;
  place-items: center;
  font-weight: 850;
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: 14px;
  overflow: hidden;
}
.data-table th,
.data-table td {
  text-align: left;
  padding: 13px;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
}
.data-table th {
  background: var(--surface-muted);
}
.settings-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 28px;
}
.settings-nav {
  position: sticky;
  top: 20px;
  align-self: start;
}
.settings-nav a {
  display: block;
  padding: 11px 13px;
  text-decoration: none;
  border-radius: 9px;
}
.settings-nav a:hover {
  background: var(--interactive-muted);
}
.settings-section {
  margin-bottom: 24px;
}
.setting-row {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  align-items: center;
  border-top: 1px solid var(--line);
  padding: 20px 0;
}
.setting-row:first-of-type {
  border-top: 0;
}
.setting-copy {
  max-width: 650px;
}
.danger-zone {
  border-color: var(--danger-muted-strong);
}
.notice {
  border-radius: 13px;
  padding: 15px 17px;
  background: var(--surface-muted);
  color: var(--teal-dark);
  margin: 16px 0;
}
.notice-warning {
  background: var(--warning-muted);
  color: var(--warning-text);
}
.token-box {
  word-break: break-all;
  background: #102a43;
  color: #fff;
  padding: 18px;
  border-radius: 14px;
  font-family: ui-monospace, monospace;
}
.privacy-content {
  max-width: 860px;
  margin: auto;
  padding: 60px 24px;
}
.privacy-content pre {
  white-space: pre-wrap;
  font: inherit;
  line-height: 1.7;
}
.empty-state {
  text-align: center;
  padding: 50px 22px;
}
.empty-state .icon-tile {
  margin: 0 auto 18px;
}
footer {
  max-width: 1200px;
  margin: auto;
  padding: 30px 24px 45px;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.86rem;
}
footer span:first-child {
  color: var(--ink);
  font-weight: 800;
  margin-right: auto;
}
@media (max-width: 900px) {
  .hero {
    background-size: 80%;
    background-position: center bottom;
    padding-bottom: 410px;
  }
  .hero-copy {
    max-width: 650px;
  }
  .grid-3,
  .stat-grid,
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .auth-layout {
    display: block;
    border-radius: 0;
    border: 0;
  }
  .auth-art {
    min-height: 340px;
  }
  .quick-grid,
  .settings-grid {
    grid-template-columns: 1fr;
  }
  .settings-nav {
    position: static;
    display: flex;
    overflow: auto;
  }
  .retailer-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (max-width: 580px) {
  .site-header {
    padding: 0 16px;
  }
  .site-header nav {
    gap: 12px;
  }
  .hero {
    padding: 40px 18px 300px;
    background-size: 125%;
  }
  .trust-row {
    background: var(--surface);
    border-radius: 12px;
    padding: 12px 14px;
  }
  .grid-3,
  .stat-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .auth-panel {
    padding: 36px 22px;
  }
  .auth-art {
    min-height: 260px;
  }
  .app-shell,
  .section-wrap {
    padding-left: 16px;
    padding-right: 16px;
  }
  .welcome {
    align-items: start;
    flex-direction: column;
  }
  .retailer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .setting-row {
    align-items: flex-start;
    flex-direction: column;
  }
  .button {
    width: 100%;
  }
  footer {
    padding-left: 16px;
    padding-right: 16px;
  }
}