:root {
  --bg: #ffffff;
  --text: #0b0f19;
  --muted: #687385;
  --line: #e6eaf0;
  --brand: #0a66ff;
  --brand-ink: #0b348f;
  --accent: #111827;
  --card: #f8fafc;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
  z-index: 20;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.brand {
  font-weight: 700;
  letter-spacing: 0.2px;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 20px;
}
.nav a:hover { color: var(--text); }

/* Hero */
.hero { padding: 72px 0 36px; }
.hero-inner { text-align: center; }
.hero h1 {
  font-size: 44px;
  line-height: 1.1;
  margin: 0 0 12px;
}
.subhead {
  color: var(--muted);
  font-size: 18px;
  margin: 0 auto 20px;
  max-width: 720px;
}
.hero-cta { margin-top: 8px; }
.trust {
  margin-top: 18px;
  color: var(--muted);
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
}
.btn:hover { border-color: #cfd6df; }
.btn-primary {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
}
.btn-primary:hover { background: var(--brand-ink); border-color: var(--brand-ink); }

/* Plans */
.plans { padding: 48px 0; }
.plans h2 { text-align: center; margin: 0 0 8px; }
.plans-note { text-align: center; color: var(--muted); margin: 0 0 28px; }
.plan-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.plan-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
}
.plan-card.popular { border-color: var(--brand); box-shadow: 0 8px 24px rgba(10, 102, 255, 0.08); }
.plan-card.premium { background: var(--card); }
.plan-card .badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: #111827;
  color: #fff;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 999px;
}
.plan-card h3 { margin: 0 0 6px; }
.plan-card .qty { margin: 0 0 10px; color: var(--muted); }
.plan-card .price { margin: 0 0 10px; font-weight: 600; }
.muted { color: var(--muted); font-weight: 500; }
.features { margin: 0 0 14px; padding-left: 18px; color: var(--muted); }
.features li { margin: 6px 0; }
.plan-card .btn { width: 100%; }

/* Benefits */
.benefits { padding: 40px 0; border-top: 1px solid var(--line); }
.benefit-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.benefit-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.benefit-card h4 { margin: 0 0 6px; }
.benefit-card p { color: var(--muted); margin: 0; }

/* Guarantees / Stats */
.guarantees { padding: 28px 0; border-top: 1px solid var(--line); background: #fafbfd; }
.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; text-align: center; }
.stat-num { font-size: 28px; font-weight: 700; }
.stat-label { color: var(--muted); }

/* Positioning */
.positioning { padding: 40px 0; border-top: 1px solid var(--line); }
.positioning-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.pos-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; }
.pos-points { margin: 0 0 14px; padding-left: 18px; color: var(--muted); }
.pos-points li { margin: 6px 0; }

/* Testimonials */
.testimonials { padding: 40px 0; border-top: 1px solid var(--line); }
.testimonials-sub { color: var(--muted); margin: 0 0 20px; text-align: center; }
.testimonial-grid { display: flex; gap: 16px; overflow-x: auto; -webkit-overflow-scrolling: touch; scroll-snap-type: x mandatory; padding-bottom: 8px; }
.testimonial-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; flex: 0 0 360px; scroll-snap-align: start; }
.t-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.avatar { width: 36px; height: 36px; border-radius: 50%; background: #111827; color: #fff; display: inline-flex; align-items: center; justify-content: center; font-weight: 700; }
.name { font-weight: 700; }
.role { color: var(--muted); font-size: 14px; }
.quote { color: var(--text); margin: 0; }

.testimonial-grid::-webkit-scrollbar { height: 8px; }
.testimonial-grid::-webkit-scrollbar-thumb { background: #cfd6df; border-radius: 999px; }
.testimonial-grid::-webkit-scrollbar-track { background: #f3f4f6; }

/* How it works */
.how-it-works { padding: 40px 0; border-top: 1px solid var(--line); }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { border: 1px solid var(--line); border-radius: 14px; padding: 16px; background: #fff; }
.num { display: inline-flex; width: 28px; height: 28px; align-items: center; justify-content: center; border-radius: 50%; background: var(--accent); color: #fff; font-weight: 700; margin-bottom: 8px; }

/* FAQ */
.faq { padding: 40px 0; border-top: 1px solid var(--line); }
.faq details { border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; background: #fff; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { color: var(--muted); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; color: var(--muted); }
.foot-links a { color: var(--muted); text-decoration: none; margin-left: 16px; }
.foot-links a:hover { color: var(--text); }

/* Modal */
.modal { position: fixed; inset: 0; display: none; }
.modal[aria-hidden="false"] { display: block; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.4); }
.modal-dialog { position: relative; width: 100%; max-width: 520px; margin: 6vh auto; background: #fff; border-radius: 16px; padding: 18px; border: 1px solid var(--line); box-shadow: 0 16px 40px rgba(2, 6, 23, 0.15); }
.modal-close { position: absolute; right: 10px; top: 10px; width: 32px; height: 32px; border-radius: 8px; border: 1px solid var(--line); background: #fff; cursor: pointer; }

/* Form */
.form-row { display: grid; gap: 6px; margin-bottom: 12px; }
label { font-weight: 600; }
input[type="text"], input[type="email"], textarea { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit; }
select { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font: inherit; background: #fff; }
input[readonly] { background: #f9fafb; color: var(--muted); }
.hint { color: var(--muted); }
.checkbox label { font-weight: 500; }
.form-actions { display: flex; justify-content: flex-end; margin-top: 8px; }
.form-success { color: #0a7d22; font-weight: 600; margin-top: 10px; }
.form-error { color: #dc2626; font-weight: 600; margin-top: 10px; }

/* Responsive */
@media (max-width: 980px) {
  .plan-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .hero h1 { font-size: 34px; }
  .plan-grid { grid-template-columns: 1fr; }
  .benefit-grid { grid-template-columns: 1fr; }
  .nav a { margin-left: 12px; }
}

@media (max-width: 980px) {
  .testimonial-grid { grid-template-columns: 1fr; }
}

/* Mobile enhancements */
@media (max-width: 640px) {
  .testimonial-card { flex-basis: 80%; min-width: 280px; }
  .header-inner { height: auto; padding: 10px 0; }
  .nav { overflow: auto; white-space: nowrap; }
}

/* Support */
.support { padding: 40px 0; border-top: 1px solid var(--line); }
.support-sub { color: var(--muted); margin: 0 0 22px; text-align: center; }
.support-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.support-card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 16px; text-align: left; }
.support-card h4 { margin: 0 0 6px; }
.support-card p { color: var(--muted); margin: 0 0 12px; }

@media (max-width: 980px) {
  .support-grid { grid-template-columns: 1fr; }
}