:root {
  --ink: #0f1a2e;
  --body: #46516a;
  --muted: #6b7489;
  --line: #e4e8f0;
  --bg: #ffffff;
  --soft: #f6f8fc;
  --brand: #3b4cca;
  --brand-dark: #2c3aa6;
  --brand-tint: #eef0ff;
  --radius: 12px;
  --max: 1120px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 700; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 3.2vw, 2.1rem); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 600; }
p { margin: 0 0 12px; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }

.container { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
@media (min-width: 768px) { .container { padding: 0 32px; } }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 700; font-size: 1.15rem; }
.logo:hover { text-decoration: none; }
.logo svg { width: 28px; height: 28px; flex: none; }
.nav-links { display: none; gap: 28px; }
.nav-links a { color: var(--body); font-size: 0.95rem; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
@media (min-width: 820px) { .nav-links { display: flex; } }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  font-weight: 600; font-size: 0.95rem; line-height: 1.2;
  border: 1px solid transparent; transition: background 0.15s, border-color 0.15s;
}
.btn:hover { text-decoration: none; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: #c9cfdc; }
.btn-sm { padding: 9px 16px; font-size: 0.9rem; }

/* Hero */
.hero {
  padding: 72px 0 80px;
  background:
    radial-gradient(800px 400px at 85% -10%, #e3e7ff 0%, transparent 60%),
    radial-gradient(600px 300px at 0% 0%, #eaf6ff 0%, transparent 60%);
}
.hero-grid { display: grid; gap: 48px; align-items: center; }
@media (min-width: 920px) { .hero-grid { grid-template-columns: 1.1fr 0.9fr; } }
.eyebrow {
  display: inline-block; font-size: 0.8rem; font-weight: 600; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--brand); background: var(--brand-tint);
  padding: 6px 12px; border-radius: 999px; margin-bottom: 18px;
}
.hero p.lead { font-size: 1.15rem; max-width: 34em; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Checkout illustration */
.mock {
  background: #fff; border: 1px solid var(--line); border-radius: 16px;
  box-shadow: 0 24px 48px -24px rgba(15, 26, 46, 0.25);
  padding: 24px; max-width: 420px; width: 100%; justify-self: center;
}
.mock-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.mock-head strong { color: var(--ink); }
.mock-amount { font-size: 1.6rem; font-weight: 700; color: var(--ink); }
.mock-field { height: 42px; border: 1px solid var(--line); border-radius: 8px; margin-bottom: 12px; background: var(--soft); position: relative; }
.mock-field::after { content: ""; position: absolute; left: 14px; top: 16px; height: 10px; width: 40%; border-radius: 4px; background: #dde2ec; }
.mock-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.mock-pay { height: 44px; border-radius: 8px; background: var(--brand); margin-top: 8px; }
.mock-note { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: var(--muted); margin-top: 14px; }
.mock-note svg { width: 14px; height: 14px; flex: none; }

/* Sections */
section { padding: 80px 0; }
.section-alt { background: var(--soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head p { font-size: 1.05rem; }

.grid { display: grid; gap: 20px; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 960px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.card p { margin: 0; font-size: 0.97rem; }
.icon {
  width: 40px; height: 40px; border-radius: 10px; background: var(--brand-tint); color: var(--brand);
  display: grid; place-items: center; margin-bottom: 16px;
}
.icon svg { width: 20px; height: 20px; }

/* Steps */
.steps { counter-reset: step; }
.step { position: relative; padding-top: 8px; }
.step-num {
  width: 36px; height: 36px; border-radius: 50%; background: var(--ink); color: #fff;
  display: grid; place-items: center; font-weight: 700; margin-bottom: 16px;
}

/* Security */
.security { display: grid; gap: 40px; align-items: start; }
@media (min-width: 920px) { .security { grid-template-columns: 0.9fr 1.1fr; } }
.checklist { list-style: none; margin: 0; padding: 0; display: grid; gap: 16px; }
.checklist li { display: flex; gap: 14px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.checklist svg { width: 20px; height: 20px; flex: none; color: var(--brand); margin-top: 3px; }
.checklist strong { color: var(--ink); display: block; margin-bottom: 2px; }
.small { font-size: 0.88rem; color: var(--muted); }

/* CTA */
.cta { text-align: center; }
.cta-box {
  background: var(--ink); color: #c9d0e0; border-radius: 20px; padding: 56px 24px;
}
.cta-box h2 { color: #fff; }
.cta-box p { max-width: 520px; margin: 0 auto 24px; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; font-size: 0.92rem; color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; gap: 16px 28px; align-items: center; justify-content: space-between; }
.footer-links { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.footer-links a { color: var(--muted); }
.footer-links a:hover { color: var(--ink); }

/* Legal pages */
.legal { padding: 56px 0 80px; }
.legal .container { max-width: 760px; }
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); }
.legal h2 { font-size: 1.2rem; margin-top: 32px; }
.legal .updated { color: var(--muted); font-size: 0.92rem; margin-bottom: 28px; }
.legal ul { padding-left: 20px; margin: 0 0 12px; }