:root {
  --bg: #0d0f14;
  --bg-alt: #14171f;
  --card: #1a1e28;
  --border: #262b38;
  --text: #eef0f4;
  --text-dim: #9aa1b0;
  --accent: #4f8cff;
  --accent-dark: #3a6fd6;
  --success: #2fbf71;
  --error: #ff5c5c;
  --radius: 10px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(13, 15, 20, 0.9);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  max-width: 880px;
  margin: 0 auto;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  gap: 28px;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.nav-links a:hover { color: var(--text); }

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  border: none;
  transition: background 0.15s ease, transform 0.1s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-primary:hover { background: var(--accent-dark); }

.btn-block { width: 100%; text-align: center; }

/* Hero */
.hero {
  padding: 96px 0 72px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(79, 140, 255, 0.1);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.hero p.sub {
  font-size: 1.08rem;
  color: var(--text-dim);
  max-width: 560px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-note {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Sections */
section {
  padding: 64px 0;
  border-top: 1px solid var(--border);
}

section h2 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  text-align: center;
}

section p.section-sub {
  text-align: center;
  color: var(--text-dim);
  max-width: 520px;
  margin: 0 auto 40px;
}

/* Feature grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 20px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}

.card h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.card p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.check {
  color: var(--success);
  margin-right: 8px;
}

/* Steps */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
  counter-reset: step;
}

.step {
  text-align: center;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  margin: 0 auto 14px;
}

.step h3 {
  font-size: 0.98rem;
  margin-bottom: 6px;
}

.step p {
  color: var(--text-dim);
  font-size: 0.9rem;
}

/* Pricing */
.pricing-card {
  max-width: 380px;
  margin: 0 auto;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
  text-align: center;
}

.price {
  font-size: 2.4rem;
  font-weight: 700;
  margin: 10px 0 4px;
}

.price-note {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.pricing-list {
  text-align: left;
  list-style: none;
  margin: 24px 0;
  font-size: 0.92rem;
  color: var(--text-dim);
}

.pricing-list li {
  margin-bottom: 10px;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 18px 0;
}

.faq-item h3 {
  font-size: 0.98rem;
  margin-bottom: 8px;
}

.faq-item p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.82rem;
}

/* Checkout page */
.checkout-wrap {
  max-width: 480px;
  margin: 0 auto;
  padding: 64px 24px;
}

.checkout-header {
  text-align: center;
  margin-bottom: 32px;
}

.checkout-header h1 {
  font-size: 1.5rem;
  margin-bottom: 6px;
}

.checkout-header p {
  color: var(--text-dim);
  font-size: 0.92rem;
}

.order-summary {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.order-summary .name {
  font-weight: 600;
  font-size: 0.95rem;
}

.order-summary .desc {
  color: var(--text-dim);
  font-size: 0.82rem;
}

.order-summary .amount {
  font-weight: 700;
  font-size: 1.1rem;
}

form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.field {
  margin-bottom: 18px;
}

.field label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  padding: 11px 13px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  font-size: 0.95rem;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
}

.field-error {
  color: var(--error);
  font-size: 0.78rem;
  margin-top: 6px;
  display: none;
}

.pay-error {
  display: none;
  background: rgba(255, 92, 92, 0.1);
  border: 1px solid rgba(255, 92, 92, 0.35);
  color: var(--error);
  padding: 13px 15px;
  border-radius: 8px;
  font-size: 0.88rem;
  margin-top: 16px;
}

.secure-note {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.78rem;
  margin-top: 16px;
}

.back-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.back-link:hover { color: var(--text); }

@media (max-width: 640px) {
  .hero h1 { font-size: 2rem; }
  .nav-links { display: none; }
}