:root {
  --bg: #f8fafc;
  --surface: #ffffff;
  --surface-soft: #eff6ff;
  --border: #e2e8f0;
  --text: #0f172a;
  --muted: #64748b;
  --navy: #1e293b;
  --green: #22c55e;
  --green-dark: #16a34a;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --radius: 16px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Avenir Next", "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(900px 500px at 0% -10%, rgba(37, 99, 235, 0.12), transparent 60%),
    radial-gradient(900px 500px at 100% -10%, rgba(34, 197, 94, 0.14), transparent 60%),
    var(--bg);
  color: var(--text);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
.container { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }

.skip-link {
  position: absolute;
  top: -50px;
  left: 12px;
  background: var(--text);
  color: #fff;
  padding: 8px 10px;
  border-radius: 10px;
}
.skip-link:focus { top: 10px; z-index: 999; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 70px;
}

.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand.small { font-size: 14px; }
.brand-mark {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 12px;
  background: #e8f5ee;
  border: 1px solid #c8ead6;
}
.brand-mark svg { width: 20px; height: 20px; fill: var(--green); }
.brand-text { font-size: 20px; font-weight: 600; color: var(--navy); }
.brand-text strong { font-weight: 800; }

.nav-menu {
  display: flex;
  list-style: none;
  gap: 6px;
  margin: 0;
  padding: 0;
}
.nav-menu a {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: 10px;
  color: #334155;
  font-weight: 600;
}
.nav-menu a:hover { background: #eef2ff; }

.nav-toggle { display: none; }

.section { padding: 72px 0; }
.section.alt { background: #f1f5f9; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 26px;
  align-items: start;
}
.badge {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: #e2e8f0;
  color: #334155;
  font-size: 13px;
  font-weight: 700;
}
h1 {
  margin: 12px 0;
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--navy);
}
.grad {
  background: linear-gradient(90deg, var(--blue-dark), var(--green-dark));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lead { color: var(--muted); font-size: 18px; max-width: 52ch; margin: 0; }

.hero-actions { display: flex; gap: 10px; margin-top: 20px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid transparent;
  font-weight: 700;
  cursor: pointer;
}
.btn-primary {
  background: linear-gradient(135deg, var(--green), var(--green-dark));
  color: #fff;
  box-shadow: 0 12px 22px rgba(34, 197, 94, 0.25);
}
.btn-secondary {
  background: #fff;
  border-color: var(--border);
  color: #1e293b;
}

.hero-points {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}
.hero-point {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  color: #334155;
}

.phone-mock {
  background: var(--navy);
  color: #e2e8f0;
  border-radius: 24px;
  border: 1px solid #334155;
  padding: 18px;
  box-shadow: 0 20px 45px rgba(15, 23, 42, 0.25);
}
.mock-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
}
.mock-block {
  background: #243046;
  border: 1px solid #31415e;
  border-radius: 14px;
  padding: 14px;
  margin-bottom: 12px;
}
.credit { font-size: 28px; margin: 2px 0 0; font-weight: 800; color: #f8fafc; }
.mock-list { display: grid; gap: 10px; }
.plan {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 12px;
  padding: 12px;
  font-size: 14px;
  border: 1px solid rgba(255,255,255,0.12);
}
.plan strong { font-size: 13px; }
.plan.green { background: rgba(34, 197, 94, 0.22); }
.plan.blue { background: rgba(37, 99, 235, 0.25); }
.plan.cyan { background: rgba(14, 116, 144, 0.25); }
.plan.purple { background: rgba(126, 34, 206, 0.25); }

.section-head { margin-bottom: 20px; }
.section-head h2 {
  margin: 0;
  color: #0f172a;
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.02em;
}
.section-head p { margin: 4px 0 0; color: var(--muted); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  min-height: 155px;
}
.feature-card h3 { margin: 0 0 6px; font-size: 18px; color: #0f172a; }
.feature-card p { margin: 0; color: var(--muted); font-size: 14px; }

.credit-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.credit-card {
  padding: 18px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: #fff;
}
.credit-card h3 { margin: 0 0 8px; color: #0f172a; }
.credit-card p { margin: 0; font-weight: 700; color: #334155; }
.credit-card.featured { border-color: #8db5ff; background: #eef4ff; }

.credit-usage {
  margin-top: 14px;
  display: grid;
  gap: 8px;
  color: #334155;
}

.security-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.security-wrap h2 { margin: 0 0 8px; }
.security-wrap p { margin: 0; color: var(--muted); }
.security-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.security-list li {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
  color: #334155;
}

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  align-items: start;
}
.contact-form {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  display: grid;
  gap: 10px;
}
.contact-form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  color: #334155;
}
input, textarea {
  width: 100%;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  background: #fff;
}
input:focus, textarea:focus { outline: 2px solid #bfdbfe; border-color: #93c5fd; }
.hidden { display: none; }

.site-footer {
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 20px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.footer-links { display: flex; gap: 14px; }
.muted { color: var(--muted); }

@media (max-width: 960px) {
  .hero-grid,
  .feature-grid,
  .credit-grid,
  .security-wrap,
  .contact { grid-template-columns: 1fr; }

  .nav-toggle {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #fff;
  }
  .nav-toggle-bars,
  .nav-toggle-bars::before,
  .nav-toggle-bars::after {
    content: "";
    display: block;
    width: 18px;
    height: 2px;
    background: #1e293b;
    position: relative;
    border-radius: 2px;
  }
  .nav-toggle-bars::before { position: absolute; top: -6px; }
  .nav-toggle-bars::after { position: absolute; top: 6px; }

  .nav-menu {
    position: absolute;
    right: 20px;
    top: 62px;
    width: min(280px, calc(100% - 40px));
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 8px;
    box-shadow: 0 14px 28px rgba(15,23,42,0.12);
  }
  .nav-menu.open { display: flex; }
}