:root {
  --pti-blue: #1BA5D4;
  --pti-blue-dark: #0E5E8A;
  --pti-blue-light: #E8F6FC;
  --pti-charcoal: #2D2D2D;
  --pti-gray: #5A6570;
  --pti-cream: #FAF8F4;
}
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--pti-charcoal);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4, .serif {
  font-family: 'Playfair Display', Georgia, serif;
  letter-spacing: -0.01em;
  color: var(--pti-charcoal);
}
h1 { font-weight: 700; line-height: 1.1; }
h2 { font-weight: 700; line-height: 1.15; }
.text-brand { color: var(--pti-blue); }
.bg-brand { background-color: var(--pti-blue); }
.bg-brand-dark { background-color: var(--pti-blue-dark); }
.bg-brand-light { background-color: var(--pti-blue-light); }
.bg-cream { background-color: var(--pti-cream); }
.border-brand { border-color: var(--pti-blue); }

.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background-color: var(--pti-blue); color: white;
  padding: 0.875rem 1.75rem; border-radius: 0.5rem;
  font-weight: 600; letter-spacing: 0.01em;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(27, 165, 212, 0.25);
}
.btn-primary:hover { background-color: var(--pti-blue-dark); transform: translateY(-1px); box-shadow: 0 6px 18px rgba(27, 165, 212, 0.35); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background-color: transparent; color: var(--pti-blue);
  padding: 0.875rem 1.75rem; border-radius: 0.5rem;
  font-weight: 600; border: 2px solid var(--pti-blue);
  transition: all 0.2s ease;
}
.btn-secondary:hover { background-color: var(--pti-blue); color: white; }

.hero-gradient {
  background: linear-gradient(135deg, rgba(14, 94, 138, 0.85) 0%, rgba(27, 165, 212, 0.75) 100%);
}
.section-divider {
  height: 4px;
  width: 60px;
  background: var(--pti-blue);
  margin: 0 auto 1.5rem;
  border-radius: 2px;
}

.card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 4px 20px rgba(14, 94, 138, 0.08);
  border: 1px solid rgba(14, 94, 138, 0.06);
  transition: all 0.3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(14, 94, 138, 0.12);
}
.card-accent { border-top: 4px solid var(--pti-blue); }

.nav-link { color: var(--pti-charcoal); font-weight: 500; transition: color 0.2s; }
.nav-link:hover { color: var(--pti-blue); }
.nav-link.active { color: var(--pti-blue); }

.stat-value { font-family: 'Playfair Display', serif; font-size: 3rem; font-weight: 700; color: var(--pti-blue); line-height: 1; }
.stat-label { color: var(--pti-gray); font-size: 0.95rem; text-transform: uppercase; letter-spacing: 0.08em; margin-top: 0.5rem; }

.testimonial {
  background: white;
  border-radius: 1rem;
  padding: 2.5rem;
  box-shadow: 0 4px 20px rgba(14, 94, 138, 0.06);
  position: relative;
}
.testimonial::before {
  content: '"';
  position: absolute;
  top: -10px; left: 20px;
  font-family: 'Playfair Display', serif;
  font-size: 5rem;
  color: var(--pti-blue);
  line-height: 1;
}
.pricing-card {
  background: white;
  border-radius: 1rem;
  padding: 2.5rem 2rem;
  box-shadow: 0 4px 20px rgba(14, 94, 138, 0.08);
  border: 2px solid transparent;
  transition: all 0.3s ease;
}
.pricing-card.featured { border-color: var(--pti-blue); position: relative; transform: scale(1.03); }
.pricing-card.featured::before {
  content: 'Most Popular';
  position: absolute;
  top: -14px; left: 50%;
  transform: translateX(-50%);
  background: var(--pti-blue);
  color: white;
  padding: 0.35rem 1rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.mobile-menu { display: none; }
@media (max-width: 768px) {
  .mobile-menu.open { display: block; }
}