:root {
  --bg-main: #04110b;
  --bg-card: #0b1f16;
  --bg-card-alt: #11271d;
  --accent-primary: #36f28f;
  --accent-secondary: #2ac77a;
  --accent-warning: #ffcc4d;
  --text-primary: #f0fff4;
  --text-secondary: #c8e5d5;
  --text-muted: #8ea99b;
  --border-soft: rgba(54, 242, 143, 0.18);
  --font-base: 'Archivo', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body,
h1,
h2,
h3,
p {
  margin: 0;
}

body {
  font-family: var(--font-base);
  background: radial-gradient(circle at 20% 20%, rgba(54, 242, 143, 0.1), transparent 60%), var(--bg-main);
  color: var(--text-primary);
}

.checkout-body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.checkout-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px clamp(24px, 6vw, 64px);
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand__logo {
  height: clamp(72px, 10vw, 110px);
  width: auto;
}

.brand__progress {
  display: grid;
  gap: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

.progress {
  width: 180px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background: linear-gradient(120deg, var(--accent-primary), #1cb46d);
}

.secure-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-soft);
  background: rgba(4, 17, 11, 0.65);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.secure-badge__icon {
  font-size: 1.2rem;
}

.checkout-wrapper {
  flex: 1;
  display: flex;
  justify-content: center;
  padding: clamp(16px, 4vw, 48px) clamp(16px, 6vw, 64px);
}

.offer-card {
  background: var(--bg-card);
  border-radius: 32px;
  border: 1px solid var(--border-soft);
  max-width: 960px;
  width: min(960px, 100%);
  padding: clamp(28px, 5vw, 56px);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}

.offer-head {
  display: grid;
  gap: 12px;
  text-align: center;
}

.offer-head h1 {
  font-size: clamp(2.1rem, 4vw, 2.8rem);
}

.offer-head p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

.offer-grid {
  display: grid;
  gap: clamp(24px, 3vw, 32px);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.offer-details {
  display: grid;
  gap: 24px;
}

.price-box {
  background: var(--bg-card-alt);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid rgba(54, 242, 143, 0.25);
  display: grid;
  gap: 12px;
  text-align: center;
}

.price-box__tag {
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent-primary);
  font-weight: 600;
}

.price-box__value {
  display: inline-flex;
  align-items: flex-end;
  gap: 6px;
  justify-content: center;
  font-size: clamp(3.4rem, 7vw, 4.2rem);
  color: var(--accent-primary);
}

.price-box__value strong {
  font-weight: 700;
  line-height: 1;
}

.price-box__value sup {
  font-size: 1.4rem;
  line-height: 1;
  margin-bottom: 12px;
}

.price-box__note {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.benefits {
  margin: 0;
  padding-left: 22px;
  display: grid;
  gap: 10px;
  font-size: 1rem;
  color: var(--text-secondary);
}

.benefits li::marker {
  color: var(--accent-primary);
}

.guarantee-box {
  background: rgba(17, 39, 29, 0.75);
  border-radius: 24px;
  padding: 28px;
  border: 1px solid rgba(255, 204, 77, 0.35);
  display: grid;
  gap: 12px;
  color: var(--text-secondary);
}

.guarantee-box h2 {
  font-size: 1.4rem;
  color: var(--accent-warning);
  display: flex;
  align-items: center;
  gap: 8px;
}

.guarantee-box ul {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 8px;
}

.checkout-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 20px;
  padding: 18px clamp(28px, 8vw, 40px);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  color: #04110b;
  background: linear-gradient(125deg, var(--accent-primary), #1cb46d);
  text-decoration: none;
  box-shadow: 0 26px 46px rgba(54, 242, 143, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  text-align: center;
}

.checkout-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 32px 52px rgba(54, 242, 143, 0.45);
}

.checkout-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.support-box {
  background: rgba(4, 17, 11, 0.6);
  border: 1px solid var(--border-soft);
  border-radius: 20px;
  padding: 22px 26px;
  display: grid;
  gap: 8px;
  text-align: center;
  color: var(--text-secondary);
}

.support-box strong {
  color: var(--accent-primary);
}

.faq {
  display: grid;
  gap: 10px;
}

.faq-item {
  background: rgba(17, 39, 29, 0.55);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  padding: 14px 20px;
  color: var(--text-secondary);
  transition: border-color 0.2s ease;
}

.faq-item[open] {
  border-color: rgba(54, 242, 143, 0.25);
}

.faq-item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
}

.faq-item p {
  margin-top: 10px;
  font-size: 0.95rem;
  line-height: 1.5;
}

.manual-confirm {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.manual-confirm a {
  color: var(--accent-primary);
  font-weight: 600;
}

.checkout-footer {
  text-align: center;
  padding: 24px 16px 40px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .checkout-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .progress {
    width: 140px;
  }

  .offer-card {
    padding: 32px 24px;
  }
}