:root {
  --radius: 0.625rem;
  --background: oklch(0.975 0.002 250);
  --foreground: oklch(0.18 0.005 250);
  --card: oklch(1 0 0);
  --primary: oklch(0.16 0.004 250);
  --primary-foreground: oklch(0.99 0 0);
  --secondary: oklch(0.96 0.003 250);
  --muted-foreground: oklch(0.52 0.008 250);
  --border: oklch(0.91 0.004 250);
  --gold: oklch(0.72 0.13 78);
  --note-bg: oklch(0.97 0.05 95);
  --note-fg: oklch(0.45 0.09 70);
  --gradient-cta: linear-gradient(135deg, oklch(0.24 0.006 250), oklch(0.1 0.004 250));
  --shadow-card: 0 1px 2px oklch(0.2 0.01 250 / 6%), 0 8px 24px oklch(0.2 0.01 250 / 6%);
  --shadow-cta: 0 10px 24px oklch(0.15 0.01 250 / 25%);
}

* { box-sizing: border-box; border-color: var(--border); }

html { min-height: 100%; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--foreground);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, a, summary { -webkit-tap-highlight-color: transparent; }

.page {
  min-height: 100vh;
  padding: 2rem 1rem;
}

.container {
  width: 100%;
  max-width: 36rem;
  margin: 0 auto;
}

.card {
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  background: var(--card);
  box-shadow: var(--shadow-card);
}

.hero {
  padding: 2.5rem 1.5rem 1.75rem;
  text-align: center;
}

.logo {
  width: 3rem;
  height: 3rem;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--primary);
  color: var(--primary-foreground);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.125rem;
  letter-spacing: -0.025em;
}

h1 {
  margin: 0;
  color: var(--foreground);
  font-size: 1.25rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.025em;
  text-transform: uppercase;
}

.amount {
  margin: 0.5rem 0 0;
  color: var(--gold);
  font-size: 0.875rem;
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.subtitle {
  margin: 0.75rem 0 0;
  color: var(--muted-foreground);
  font-size: 0.75rem;
  line-height: 1.5;
}

.redeem-section {
  padding: 1.75rem 1.25rem;
  border-top: 1px solid var(--border);
}

.redeem-section > h2,
.faq-section > h2 {
  margin: 0;
  text-align: center;
  color: var(--foreground);
  font-size: 0.75rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.steps {
  margin-top: 1.25rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.step {
  padding: 1rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: color-mix(in oklch, var(--secondary) 40%, transparent);
  text-align: center;
}

.number {
  width: 1.5rem;
  height: 1.5rem;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--primary);
  color: var(--primary-foreground);
  font-size: 0.6875rem;
  line-height: 1;
  font-weight: 700;
}

.step-title {
  margin: 0.75rem 0 0;
  color: var(--foreground);
  font-size: 0.6875rem;
  line-height: 1.2;
  font-weight: 600;
}

.step-sub {
  margin: 0.25rem 0 0;
  color: var(--muted-foreground);
  font-size: 0.625rem;
  line-height: 1.2;
}

.cta {
  margin-top: 1.5rem;
  min-height: 3.25rem;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--gradient-cta);
  color: var(--primary-foreground);
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.025em;
  box-shadow: var(--shadow-cta);
  transition: transform 150ms ease;
}

.cta:hover { transform: scale(1.02); }
.cta:active { transform: scale(0.99); }

.trust-row {
  margin-top: 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  color: var(--muted-foreground);
  font-size: 0.6875rem;
  line-height: 1.25;
}

.rating { color: var(--gold); }

.note {
  margin: 1rem 0 0;
  padding: 0.75rem 1rem;
  border-radius: 0.375rem;
  background: var(--note-bg);
  color: var(--note-fg);
  text-align: center;
  font-size: 0.6875rem;
  line-height: 1.6;
}

.faq-section { margin-top: 2.5rem; }

.faq-section > h2 {
  font-size: 1.125rem;
  letter-spacing: -0.025em;
  text-transform: none;
}

.faqs {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq {
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: var(--card);
  box-shadow: var(--shadow-card);
  padding: 0 1rem;
}

.faq summary {
  min-height: 3.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  cursor: pointer;
  list-style: none;
  color: var(--foreground);
  font-size: 0.75rem;
  line-height: 1.4;
  font-weight: 500;
}

.faq summary::-webkit-details-marker { display: none; }
.faq summary::marker { display: none; }

.plus {
  flex: 0 0 auto;
  color: var(--muted-foreground);
  font-size: 1rem;
  line-height: 1;
  transition: transform 150ms ease;
}

.faq[open] .plus { transform: rotate(45deg); }

.faq p {
  margin: 0;
  padding: 0 0 1rem;
  color: var(--muted-foreground);
  font-size: 0.75rem;
  line-height: 1.6;
}

.footer {
  padding: 2.5rem 0 1.5rem;
  color: var(--muted-foreground);
  text-align: center;
  font-size: 0.625rem;
  line-height: 1.6;
}

.footer p { margin: 0; }
.footer p + p { margin-top: 0.25rem; }
.footer a { color: inherit; text-decoration: underline; }

@media (min-width: 640px) {
  h1 { font-size: 1.5rem; }
  .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

@media (prefers-reduced-motion: reduce) {
  .cta, .plus { transition: none; }
}