* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-blue: #0066cc;
  --dark-blue: #003d7a;
  --light-blue: #e6f2ff;
  --success-green: #10b981;
  --profit-green: #059669;
  --accent-green: #34d399;
  --text-dark: #1a202c;
  --text-gray: #4a5568;
  --text-light: #718096;
  --white: #ffffff;
  --light-gray: #f7fafc;
  --border-gray: #e2e8f0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  line-height: 1.6;
  color: var(--text-dark);
  background-color: var(--white);
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

h3 {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-dark);
  margin-bottom: 0.75rem;
}

p {
  line-height: 1.5;
  color: var(--text-gray);
}

a {
  text-decoration: none;
  transition: all 0.3s ease;
}

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: var(--white);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  padding: 1rem 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: var(--text-gray);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover {
  color: var(--primary-blue);
}

.nav-cta {
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.nav-cta:hover {
  background-color: var(--dark-blue);
}

.nav-login {
  background-color: var(--success-green);
  color: var(--white);
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.nav-login:hover {
  background-color: var(--success-green);
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: var(--white);
}

.btn-primary:hover {
  background-color: var(--dark-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-secondary {
  background-color: var(--success-green);
  color: var(--white);
}

.btn-secondary:hover {
  background-color: var(--profit-green);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-large {
  width: 100%;
  padding: 1.25rem 2rem;
  font-size: 1.125rem;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
}

.hero {
  margin-top: 80px;
  background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
}

.hero-subhead {
  font-size: 1.25rem;
  color: var(--text-gray);
  margin-bottom: 1.5rem;
}

.hero-trust {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 2rem;
  padding: 1rem;
  background-color: rgba(16, 185, 129, 0.1);
  border-left: 4px solid var(--success-green);
  border-radius: 4px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-placeholder {
  position: relative;
  width: 100%;
  max-width: 500px;
  height: 400px;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
  border-radius: 16px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.tablet-mockup {
  background-color: var(--white);
  padding: 2rem 3rem;
  border-radius: 12px;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary-blue);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.phone-mockup {
  background-color: var(--success-green);
  color: var(--white);
  padding: 1.5rem 2rem;
  border-radius: 24px;
  font-size: 1.125rem;
  font-weight: 700;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

.trust-bar {
  background-color: var(--light-gray);
  padding: 2rem 0;
}

.trust-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.trust-container h3 {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-light);
  margin-bottom: 1.5rem;
}

.trust-icons {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
}

.trust-icon {
  background-color: var(--white);
  padding: 1rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  color: var(--text-gray);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.problem-solution {
  background-color: var(--white);
}

.problem-solution h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.comparison-visual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.comparison-side {
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
}

.old-way {
  background-color: #fef2f2;
  border: 2px solid #fecaca;
}

.old-way h3 {
  color: #dc2626;
}

.old-way p {
  color: #991b1b;
}

.new-way {
  background-color: #ecfdf5;
  border: 2px solid var(--accent-green);
}

.new-way h3 {
  color: var(--success-green);
}

.new-way p {
  color: var(--profit-green);
}

.comparison-divider {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-light);
}

.how-it-works {
  background-color: var(--light-gray);
}

.how-it-works h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background-color: var(--primary-blue);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.income-hook {
  background: linear-gradient(135deg, var(--dark-blue) 0%, #001f3f 100%);
  color: var(--white);
  text-align: center;
}

.income-hook h2 {
  color: var(--white);
  font-size: 2.5rem;
}

.income-explanation {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 800px;
  margin: 0 auto 2rem;
}

.how-it-works-income {
  background-color: var(--white);
}

.how-it-works-income h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.how-it-works-income .feature-icon {
  background-color: var(--success-green);
}

.pricing-calculator {
  background: linear-gradient(135deg, var(--light-blue) 0%, #f0f9ff 100%);
}

.pricing-calculator h2 {
  text-align: center;
  margin-bottom: 3rem;
}

.calculator-card {
  background-color: var(--white);
  padding: 3rem;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  max-width: 700px;
  margin: 0 auto;
}

.calculator-input {
  margin-bottom: 2rem;
}

.calculator-input label {
  display: block;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 1rem;
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

#referral-slider {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: linear-gradient(to right, var(--primary-blue) 0%, var(--success-green) 100%);
  outline: none;
  -webkit-appearance: none;
}

#referral-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-blue);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
}

#referral-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

#referral-slider::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-blue);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  transition: all 0.3s ease;
  border: none;
}

#referral-slider::-moz-range-thumb:hover {
  transform: scale(1.2);
}

#referral-count {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-blue);
  min-width: 40px;
  text-align: center;
}

.calculator-results {
  background-color: var(--light-gray);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.result-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-gray);
}

.result-item:last-child {
  border-bottom: none;
}

.result-label {
  font-weight: 500;
  color: var(--text-gray);
}

.result-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-dark);
}

.result-highlight {
  background-color: var(--white);
  padding: 1rem;
  border-radius: 8px;
  margin-top: 1rem;
}

.result-highlight .result-value {
  font-size: 1.5rem;
  color: var(--primary-blue);
}

.profit-mode {
  background: linear-gradient(135deg, var(--success-green) 0%, var(--profit-green) 100%);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}

.result-profit .result-label {
  color: var(--white);
  font-size: 1.125rem;
}

.profit-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
}

.hidden {
  display: none;
}

.guarantee-block {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  background-color: rgba(16, 185, 129, 0.1);
  padding: 2rem;
  border-radius: 12px;
  border-left: 4px solid var(--success-green);
  margin-top: 2rem;
}

.guarantee-icon {
  width: 60px;
  height: 60px;
  background-color: var(--success-green);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.guarantee-text h3 {
  color: var(--success-green);
  margin-bottom: 0.5rem;
}

.guarantee-text p {
  color: var(--text-gray);
  margin: 0;
}

.footer-cta {
  background: linear-gradient(135deg, var(--dark-blue) 0%, #001f3f 100%);
  text-align: center;
  color: var(--white);
}

.footer-cta h2 {
  color: var(--white);
  margin-bottom: 2rem;
}

@media (max-width: 968px) {
  .nav-links {
    display: none;
  }

  .hero-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.875rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .comparison-visual {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .comparison-divider {
    transform: rotate(90deg);
  }
}

@media (max-width: 640px) {
  h1 {
    font-size: 1.875rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .section-container {
    padding: 3rem 1rem;
  }

  .hero-container {
    padding: 3rem 1rem;
  }

  .calculator-card {
    padding: 2rem 1.5rem;
  }

  .trust-icons {
    gap: 1rem;
  }

  .guarantee-block {
    flex-direction: column;
    text-align: center;
  }
}