:root {
  --primary: #28eefc;
  --secondary: #23499d;
  --on-primary: #111111;
  --on-secondary: #ffffff;
  --bg: #ffffff;
  --surface: #f6f8fb;
  --light: #e9edf3;
  --dark: #12151b;
  --muted: #566173;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--dark);
  background-color: var(--bg);
  line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  color: var(--dark);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  font-weight: 800;
}

h2.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
}

.kicker {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.lead {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--muted);
}

.navbar {
  background-color: var(--bg);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.navbar-brand img {
  max-height: 40px;
}

.section-padding {
  padding: clamp(48px, 7vw, 88px) 0;
}

.hero {
  background-color: var(--surface);
  padding-top: 8rem;
  padding-bottom: 8rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  bottom: 0; left: 0;
  background: radial-gradient(circle at top right, rgba(40, 238, 252, 0.08) 0%, transparent 50%);
  opacity: 0.8;
  z-index: 0;
}

.hero .benefits-list {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--muted);
}

.hero .benefits-list li {
  display: flex;
  align-items: center;
  margin-bottom: 12px;
}

.hero .benefits-list li .icon {
  width: 20px;
  height: 20px;
  margin-right: 10px;
  color: var(--primary);
  flex-shrink: 0;
}

.offer-card {
  background-color: var(--bg);
  border-radius: 16px;
  border: 1px solid var(--light);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08), 0 4px 12px rgba(0, 0, 0, 0.05);
  max-width: 480px;
}

.offer-card h3 {
  color: var(--dark);
  font-size: 1.5rem;
  font-weight: 700;
}

.form-control {
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--light);
  font-size: 1rem;
  color: var(--dark);
  background-color: var(--bg);
}

.form-control::placeholder {
  color: var(--muted);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 0.25rem rgba(40, 238, 252, 0.25);
}

.form-reassurance {
  font-size: 0.875rem;
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  max-width: 100%;
  padding: 15px 30px;
  margin: 8px 0;
  gap: 10px;
  border: none;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  line-height: 1.2;
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  box-sizing: border-box;
  cursor: pointer;
  transition: filter .25s ease, box-shadow .25s ease, transform .25s ease;
  min-height: 48px;
}

.btn-cta {
  background: var(--primary);
  color: var(--on-primary) !important;
  box-shadow: 0 10px 24px -8px rgba(18,21,27,.35);
}

.btn-secondary {
  background: var(--secondary);
  color: var(--on-secondary) !important;
}

.btn-cta:hover, .btn-secondary:hover {
  filter: brightness(.94);
  box-shadow: 0 14px 30px -10px rgba(18,21,27,.45);
  transform: translateY(-2px);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.info-card, .chapter-card {
  background-color: var(--bg);
  border: 1px solid var(--light);
  border-radius: 16px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.03);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.info-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.07);
}

.icon-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  border-radius: 10px;
  color: var(--on-primary);
}

.icon-chip .icon {
  width: 24px;
  height: 24px;
  stroke-width: 2;
}

.info-card .card-title, .chapter-card .chapter-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--dark);
}

.info-card .card-text, .chapter-card .chapter-blurb {
  color: var(--muted);
  font-size: 1rem;
}

.final-cta {
  background-color: var(--secondary);
  color: var(--on-secondary);
}

.final-cta h2 {
  color: var(--on-secondary);
}

.final-cta .lead {
  color: rgba(255, 255, 255, 0.8);
}

.final-cta .offer-card {
  background-color: var(--bg);
  color: var(--dark);
}

.final-cta .offer-card h3 {
  color: var(--dark);
}

footer {
  background-color: var(--dark);
  color: #aeb5c2;
}

footer img {
  filter: brightness(0) invert(1) brightness(0.8);
}

@media (max-width: 991.98px) {
  .hero {
    padding-top: 5rem;
    padding-bottom: 5rem;
  }
  .hero .benefits-list {
    text-align: center;
  }
  .hero .benefits-list li {
    justify-content: center;
  }
}

@media (max-width: 575.98px) {
  .btn {
    width: 100%;
  }
}