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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  color: #1f2937;
  background-color: #ffffff;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  background-color: #ffffff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: #1f2937;
  text-decoration: none;
}

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

.nav a {
  color: #4b5563;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.nav a:hover {
  color: #3b82f6;
}

.btn {
  padding: 0.625rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
  font-size: 1rem;
}

.btn-primary {
  background-color: #3b82f6;
  color: white;
}

.btn-primary:hover {
  background-color: #2563eb;
}

.btn-secondary {
  background-color: #f3f4f6;
  color: #1f2937;
}

.btn-secondary:hover {
  background-color: #e5e7eb;
}

.btn-outline {
  background-color: transparent;
  border: 2px solid #3b82f6;
  color: #3b82f6;
}

.btn-outline:hover {
  background-color: #3b82f6;
  color: white;
}

.btn-large {
  padding: 0.875rem 2rem;
  font-size: 1.125rem;
}

.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 6rem 0;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  line-height: 1.2;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  opacity: 0.95;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.features {
  padding: 5rem 0;
  background-color: #f9fafb;
}

.features h2,
.testimonials h2,
.pricing h2 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 3rem;
  color: #1f2937;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: white;
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: transform 0.2s, box-shadow 0.2s;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
}

.feature-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1f2937;
}

.feature-card p {
  color: #6b7280;
  line-height: 1.7;
}

.testimonials {
  padding: 5rem 0;
  background-color: #ffffff;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background: #f9fafb;
  padding: 2rem;
  border-radius: 1rem;
  border-left: 4px solid #3b82f6;
}

.stars {
  color: #fbbf24;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.testimonial-card p {
  color: #4b5563;
  font-style: italic;
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.testimonial-author strong {
  display: block;
  color: #1f2937;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.testimonial-author span {
  color: #6b7280;
  font-size: 0.875rem;
}

.pricing {
  padding: 5rem 0;
  background-color: #f9fafb;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  padding: 2.5rem;
  border-radius: 1rem;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  position: relative;
  transition: transform 0.2s, box-shadow 0.2s;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.pricing-card.featured {
  border: 2px solid #3b82f6;
  transform: scale(1.05);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: #3b82f6;
  color: white;
  padding: 0.375rem 1rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
}

.pricing-card h3 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #1f2937;
}

.price {
  margin-bottom: 2rem;
}

.price .amount {
  font-size: 3rem;
  font-weight: 800;
  color: #1f2937;
}

.price .currency {
  font-size: 1.25rem;
  color: #6b7280;
  margin-left: 0.5rem;
}

.features-list {
  list-style: none;
  margin-bottom: 2rem;
}

.features-list li {
  padding: 0.75rem 0;
  color: #4b5563;
  border-bottom: 1px solid #e5e7eb;
}

.features-list li:last-child {
  border-bottom: none;
}

.pricing-card .btn {
  width: 100%;
}

.footer {
  background-color: #1f2937;
  color: white;
  padding: 3rem 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.25rem;
  font-weight: 700;
}

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

.footer-links a {
  color: #d1d5db;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: white;
}

.footer-copyright {
  color: #9ca3af;
  font-size: 0.875rem;
}

.content-page {
  padding: 4rem 0;
  min-height: 60vh;
}

.content-page h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: #1f2937;
}

.content-section {
  margin-bottom: 2.5rem;
}

.content-section h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: #1f2937;
}

.content-section p {
  color: #4b5563;
  line-height: 1.8;
  margin-bottom: 1rem;
}

.content-section ul {
  margin-left: 1.5rem;
  color: #4b5563;
  line-height: 1.8;
}

.content-section li {
  margin-bottom: 0.5rem;
}

.update-date {
  font-style: italic;
  color: #6b7280;
  margin-top: 2rem;
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .features h2,
  .testimonials h2,
  .pricing h2 {
    font-size: 2rem;
  }

  .pricing-card.featured {
    transform: scale(1);
  }

  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
  }

  .btn-large {
    width: 100%;
  }
}