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

html {
  scroll-behavior: smooth;
}

:root {
  --primary: #8b5cf6;
  --primary-dark: #6d28d9;
  --secondary: #0f172a;
  --light: #f8fafc;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --border: #e2e8f0;
  --success: #10b981;
}

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

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

/* Navigation */
.navbar {
  background: var(--secondary);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: white;
  font-size: 1.3rem;
  font-weight: bold;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-links a {
  color: #cbd5e1;
  text-decoration: none;
  transition: color 0.3s;
  font-size: 0.95rem;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--secondary) 0%, #1e293b 100%);
  color: white;
  padding: 80px 20px;
  text-align: center;
}

.hero-content h1 {
  font-size: 3rem;
  margin-bottom: 20px;
  font-weight: 700;
  line-height: 1.2;
}

.hero-content p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  color: #cbd5e1;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-cta {
  display: flex;
  gap: 20px;
  justify-content: center;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  flex-wrap: wrap;
  margin-top: 40px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-label {
  font-size: 0.9rem;
  color: #94a3b8;
}

.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(139, 92, 246, 0.3);
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

.btn-full {
  width: 100%;
}

.btn-large {
  padding: 16px 48px;
  font-size: 1.1rem;
}

/* Advantages Section */
.advantages {
  padding: 80px 20px;
  background: #f8fafc;
}

.advantages h2 {
  font-size: 2.2rem;
  margin-bottom: 50px;
  text-align: center;
  color: var(--secondary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.advantage-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.advantage-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.advantage-icon {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.advantage-card h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--secondary);
}

.advantage-card p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Setup Section */
.setup {
  padding: 80px 20px;
}

.setup h2 {
  font-size: 2.2rem;
  margin-bottom: 50px;
  text-align: center;
  color: var(--secondary);
}

.setup-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.step {
  text-align: center;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  margin-left: auto;
  margin-right: auto;
}

.step h3 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--secondary);
}

.step p {
  color: var(--text-light);
  line-height: 1.6;
}

/* Promo Section */
.promo {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.promo-content h2 {
  font-size: 2rem;
  margin-bottom: 15px;
}

.promo-content p {
  font-size: 1.1rem;
  margin-bottom: 30px;
  opacity: 0.95;
}

/* Device Selection */
.devices {
  padding: 80px 20px;
  background: #f8fafc;
}

.devices h2 {
  font-size: 2.2rem;
  margin-bottom: 50px;
  text-align: center;
  color: var(--secondary);
}

.device-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.device-card {
  background: white;
  padding: 30px;
  border-radius: 12px;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.3s;
}

.device-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
}

.device-icon {
  font-size: 3rem;
  margin-bottom: 15px;
}

.device-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--secondary);
}

.device-card p {
  color: var(--text-light);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* Pricing Section */
.pricing {
  padding: 80px 20px;
}

.pricing h2 {
  font-size: 2.2rem;
  margin-bottom: 10px;
  text-align: center;
  color: var(--secondary);
}

.pricing-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 50px;
  font-size: 1.05rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.pricing-card {
  background: white;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 30px;
  transition: all 0.3s;
  position: relative;
}

.pricing-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.pricing-card-highlight {
  border: 2px solid var(--primary);
  transform: scale(1.05);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--primary);
  color: white;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
}

.pricing-header {
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.pricing-header h3 {
  font-size: 1.2rem;
  margin-bottom: 10px;
  color: var(--secondary);
}

.price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 5px;
}

.currency {
  font-size: 1rem;
}

.price-total {
  font-size: 0.95rem;
  color: var(--text-light);
  margin-bottom: 5px;
}

.discount {
  font-size: 0.9rem;
  color: var(--success);
  font-weight: 600;
}

.pricing-features {
  list-style: none;
  margin-bottom: 25px;
}

.pricing-features li {
  padding: 8px 0;
  color: var(--text-dark);
  font-size: 0.95rem;
}

/* FAQ Section */
.faq {
  padding: 80px 20px;
  background: #f8fafc;
}

.faq h2 {
  font-size: 2.2rem;
  margin-bottom: 50px;
  text-align: center;
  color: var(--secondary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.faq-item {
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 20px;
  text-align: left;
  background: white;
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  color: var(--secondary);
  transition: all 0.3s;
}

.faq-question:hover {
  background: #f8fafc;
  color: var(--primary);
}

.faq-toggle {
  font-size: 1.5rem;
  transition: transform 0.3s;
}

.faq-item.active .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s;
}

.faq-item.active .faq-answer {
  padding: 20px;
  max-height: 500px;
}

.faq-answer p {
  color: var(--text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* SEO Content Section */
.seo-content {
  padding: 80px 20px;
}

.seo-content h2 {
  font-size: 2.2rem;
  margin-bottom: 40px;
  text-align: center;
  color: var(--secondary);
}

.seo-content h3 {
  font-size: 1.3rem;
  margin-top: 30px;
  margin-bottom: 15px;
  color: var(--secondary);
}

.seo-content article {
  max-width: 800px;
  margin: 0 auto;
  color: var(--text-dark);
  line-height: 1.8;
}

.seo-content p {
  margin-bottom: 15px;
  color: var(--text-light);
}

.seo-content ul,
.seo-content ol {
  margin-left: 20px;
  margin-bottom: 15px;
  color: var(--text-light);
}

.seo-content li {
  margin-bottom: 8px;
}

/* Footer */
.footer {
  background: var(--secondary);
  color: white;
  text-align: center;
  padding: 30px 20px;
}

.footer a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.3s;
}

.footer a:hover {
  color: white;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 2rem;
  }

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

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    gap: 20px;
  }

  .nav-links {
    gap: 1rem;
    font-size: 0.85rem;
  }

  .advantages h2,
  .setup h2,
  .pricing h2,
  .devices h2,
  .faq h2,
  .seo-content h2 {
    font-size: 1.6rem;
  }

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

  .faq-grid {
    grid-template-columns: 1fr;
  }

  .stat-value {
    font-size: 1.4rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.5rem;
  }

  .btn {
    padding: 10px 24px;
    font-size: 0.9rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 15px;
  }

  .hero-cta {
    gap: 10px;
  }

  .nav-links {
    display: none;
  }
}