:root {
  --navy: #0f2540;
  --blue: #2563eb;
  --blue-dark: #1d4ed8;
  --blue-soft: #eff4ff;
  --ink: #16202e;
  --muted: #5b6472;
  --bg: #ffffff;
  --bg-soft: #f6f8fb;
  --border: #e5e9f0;
  --shadow: 0 4px 16px rgba(15, 37, 64, 0.06);
  --shadow-lg: 0 12px 32px rgba(15, 37, 64, 0.1);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

/* Certification banner */
.cert-banner {
  background: var(--navy);
  color: #fff;
  text-align: center;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  padding: 0.5rem 1rem;
}

/* Top bar */
.topbar {
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.topbar-inner {
  max-width: 1140px;
  margin: 0 auto;
  padding: 1.1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--navy);
}

.logo-mark {
  width: 2.1rem;
  height: 2.1rem;
  display: block;
}

.auth-nav {
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.link {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 0.15s ease;
}
.link:hover { color: var(--ink); }

.btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: var(--shadow);
  transition: background 0.15s ease, transform 0.15s ease;
}
.btn:hover { background: var(--blue-dark); transform: translateY(-1px); }

.btn-large {
  padding: 0.9rem 1.8rem;
  font-size: 1.05rem;
  border-radius: 10px;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  padding: 6.5rem 1.5rem 5.5rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 50% 0%, var(--blue-soft) 0%, rgba(239, 244, 255, 0) 70%),
    linear-gradient(180deg, var(--bg-soft), var(--bg) 80%);
}

.hero-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  position: relative;
}

.eyebrow {
  display: inline-block;
  background: var(--blue-soft);
  color: var(--blue-dark);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: 3.1rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1.25rem;
  color: var(--navy);
  font-weight: 800;
}

.hero-sub {
  font-size: 1.2rem;
  color: var(--muted);
  margin: 0 0 2.25rem;
  max-width: 600px;
  margin-inline: auto;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

/* How it works */
.how {
  background: var(--bg-soft);
  padding: 5rem 1.5rem;
}

.how-inner {
  max-width: 1140px;
  margin: 0 auto;
  text-align: center;
}

.how-inner h2 {
  color: var(--navy);
  font-size: 2rem;
  margin: 0 0 0.6rem;
  font-weight: 800;
}

.how-sub {
  color: var(--muted);
  margin: 0 0 3rem;
  font-size: 1.05rem;
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  text-align: left;
  position: relative;
}

.how-step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow);
  position: relative;
}

.how-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--navy));
  color: #fff;
  margin-bottom: 1rem;
}

.how-icon svg { width: 1.5rem; height: 1.5rem; }

.how-num {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--border);
}

.how-step h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin: 0 0 0.4rem;
}

.how-step p {
  color: var(--muted);
  margin: 0;
  font-size: 0.92rem;
}

/* Pricing */
.pricing {
  padding: 5rem 1.5rem;
}

.pricing-inner {
  max-width: 420px;
  margin: 0 auto;
}

.price-card {
  display: flex;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--bg);
}

.price-card-bar {
  width: 14px;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--blue), var(--navy));
}

.price-card-body {
  padding: 2.5rem 2rem;
  flex: 1;
}

.price {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.price-sub {
  color: var(--muted);
  margin: 0.5rem 0 1.75rem;
  font-size: 1rem;
}

.price-list {
  list-style: none;
  margin: 0 0 2rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.price-list li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1rem;
  color: var(--ink);
}

.price-list .check {
  color: var(--blue);
  font-weight: 700;
}

.btn-pill {
  display: block;
  text-align: center;
  border-radius: 999px;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
}

/* FAQ */
.faq {
  padding: 5rem 1.5rem;
}

.faq-inner {
  max-width: 680px;
  margin: 0 auto;
}

.faq-inner h2 {
  text-align: center;
  color: var(--navy);
  font-size: 1.8rem;
  margin: 0 0 2rem;
  font-weight: 800;
}

.faq-list {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.2rem 1.4rem;
  box-shadow: var(--shadow);
}

.faq-item dt {
  font-weight: 700;
  color: var(--navy);
  margin-bottom: 0.4rem;
}

.faq-item dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--navy), #16334f);
  padding: 4.5rem 1.5rem;
}

.cta-banner-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}

.cta-banner h2 {
  color: #fff;
  margin: 0 0 1.75rem;
  font-size: 1.8rem;
  font-weight: 800;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 1.75rem 1.5rem;
}

.footer-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.85rem;
}

.footer nav { display: flex; gap: 1.2rem; }

@media (max-width: 640px) {
  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1.05rem; }
}