:root {
  --primary: #0a2540;
  --accent: #00a8e8;
  --light: #f4f6f8;
  --text: #222;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  line-height: 1.7;
  font-size: 18px;
  background: #fff;
}

/* Layout */
.container {
  max-width: 1100px;
  margin: auto;
  padding: 24px;
}

.narrow {
  max-width: 720px;
}

.center {
  text-align: center;
}

/* HERO */
.hero {
  background: white;
  padding: 80px 20px 40px;
  text-align: center;
  border-bottom: 1px solid #e5e5e5;
}

.hero h1 {
  font-size: 38px;
  line-height: 1.1;
  margin-bottom: 12px;
}

/* Lead */
.lead {
  font-size: 20px;
  color: #444;
  margin-bottom: 25px;
}

/* OFFER */
.offer {
  margin: 20px 0;
}

.price {
  font-size: 52px;
  font-weight: 700;
  display: block;
}

.label {
  font-size: 18px;
}

.sub {
  font-size: 14px;
  color: #666;
}

/* CTA (Wroblewski: one obvious action) */
.cta {
  display: inline-block;
  margin-top: 20px;
  padding: 18px 26px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 700;
  font-size: 18px;
  width: 100%;
  max-width: 320px;
}

.cta.large {
  font-size: 20px;
}

/* TRUST */
.trust {
  margin-top: 18px;
  font-size: 14px;
  color: #555;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* SECTIONS */
.section {
  padding: 70px 20px;
}

.section.alt {
  background: var(--light);
}

/* GRID (scan-friendly cards) */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-top: 25px;
}

.card {
  background: white;
  border: 1px solid #e5e5e5;
  border-radius: 10px;
  padding: 16px;
  text-align: center;
}

/* LIST */
.list {
  margin-top: 18px;
  padding-left: 18px;
}

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

/* HIGHLIGHT */
.highlight {
  margin-top: 18px;
  font-weight: 600;
}

/* CTA SECTION */
.cta-section {
  text-align: center;
  padding: 80px 20px;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 30px;
  font-size: 13px;
  color: #666;
  border-top: 1px solid #eee;
}

/* STICKY MOBILE CTA (Wroblewski core principle) */
.sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--accent);
  color: white;
  text-align: center;
  padding: 16px;
  font-weight: 700;
  text-decoration: none;
  display: none;
}

/* MOBILE OPTIMIZATION */
@media (max-width: 600px) {

  .hero h1 {
    font-size: 28px;
  }

  .price {
    font-size: 40px;
  }

  .cta {
    width: 100%;
  }

  .sticky-cta {
    display: block;
  }
}