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

:root {
  --color-black: #000000;
  --color-yellow: #FFD700;
  --color-white: #FFFFFF;
  --color-gray-dark: #1a1a1a;
  --color-gray-medium: #2a2a2a;
  --color-gray-light: #f5f5f5;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  --border-radius: 8px;
  --transition: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-black);
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo a {
  text-decoration: none;
}

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.5px;
}

.logo-highlight {
  color: var(--color-yellow);
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  color: var(--color-white);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--color-yellow);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-yellow);
  transition: var(--transition);
}

.nav-link:hover::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px;
}

.mobile-toggle span {
  width: 25px;
  height: 3px;
  background-color: var(--color-yellow);
  border-radius: 2px;
  transition: var(--transition);
}

.hero {
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-dark) 100%);
  color: var(--color-white);
  padding: calc(80px + var(--spacing-xxl)) 0 var(--spacing-xxl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 215, 0, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease-out;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
  letter-spacing: -1px;
}

.highlight {
  color: var(--color-yellow);
  position: relative;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.5;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.95rem;
  font-weight: 500;
}

.feature-icon {
  color: var(--color-yellow);
  font-size: 1.2rem;
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-primary:hover {
  background-color: #ffed4e;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

.btn-outline:hover {
  background-color: var(--color-black);
  color: var(--color-yellow);
}

.btn-large {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.1rem;
}

.section {
  padding: var(--spacing-xxl) 0;
}

.section-dark {
  background-color: var(--color-gray-light);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

.section-subtitle {
  text-align: center;
  font-size: 1.1rem;
  color: #666;
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.inline-link {
  color: var(--color-black);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--color-yellow);
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
  transition: var(--transition);
}

.inline-link:hover {
  color: var(--color-yellow);
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.step-card {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.step-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-dark) 100%);
  color: var(--color-yellow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 800;
  margin: 0 auto var(--spacing-md);
}

.step-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.step-description {
  color: #666;
  line-height: 1.6;
}

.benefits-grid,
.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.benefit-card,
.resource-card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  transition: var(--transition);
  border: 2px solid transparent;
}

.benefit-card:hover,
.resource-card:hover {
  border-color: var(--color-yellow);
  transform: translateY(-3px);
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.benefit-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.benefit-title,
.resource-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.benefit-description,
.resource-description {
  color: #666;
  line-height: 1.6;
}

.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.plan-card {
  background-color: var(--color-white);
  border: 2px solid #e0e0e0;
  border-radius: var(--border-radius);
  padding: var(--spacing-xl);
  transition: var(--transition);
  position: relative;
}

.plan-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.plan-popular {
  border-color: var(--color-yellow);
  border-width: 3px;
  box-shadow: 0 8px 20px rgba(255, 215, 0, 0.2);
}

.plan-badge {
  position: absolute;
  top: -12px;
  right: 20px;
  background-color: var(--color-yellow);
  color: var(--color-black);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
}

.plan-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.plan-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.plan-price {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin: var(--spacing-md) 0;
}

.price-currency {
  font-size: 1.2rem;
  font-weight: 600;
  margin-right: 2px;
  margin-top: 8px;
}

.price-value {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.price-period {
  font-size: 1rem;
  color: #666;
  margin-left: 2px;
  margin-top: 8px;
}

.plan-save {
  background-color: #e8f5e9;
  color: #2e7d32;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 4px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-top: var(--spacing-sm);
}

.plan-features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.plan-features li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid #f0f0f0;
  font-size: 0.95rem;
}

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

.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.device-card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  text-align: center;
  transition: var(--transition);
  border: 2px solid transparent;
}

.device-card:hover {
  border-color: var(--color-yellow);
  transform: scale(1.05);
}

.device-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.device-name {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
}

.device-description {
  font-size: 0.9rem;
  color: #666;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.testimonial-card {
  background-color: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
  transform: translateY(-3px);
}

.testimonial-stars {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
}

.testimonial-text {
  font-style: italic;
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  color: #333;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.testimonial-author strong {
  font-weight: 700;
  color: var(--color-black);
}

.testimonial-author span {
  font-size: 0.9rem;
  color: #666;
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.about-content p {
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
  color: #333;
}

.about-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.faq-container {
  max-width: 800px;
  margin: 0 auto;
  margin-top: var(--spacing-xl);
}

.faq-item {
  background-color: var(--color-white);
  margin-bottom: var(--spacing-md);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.faq-question {
  width: 100%;
  padding: var(--spacing-md);
  background-color: var(--color-white);
  border: none;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.05rem;
  font-weight: 600;
  transition: var(--transition);
}

.faq-question:hover {
  background-color: var(--color-gray-light);
}

.faq-icon {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--color-yellow);
  transition: var(--transition);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

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

.faq-answer p {
  padding: 0 var(--spacing-md) var(--spacing-md);
  line-height: 1.7;
  color: #555;
}

.section-cta {
  background: linear-gradient(135deg, var(--color-black) 0%, var(--color-gray-dark) 100%);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-xxl) 0;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
}

.cta-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.cta-subtitle {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

.cta-note {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  opacity: 0.85;
}

.footer {
  background-color: var(--color-black);
  color: var(--color-white);
  padding: var(--spacing-xxl) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  margin-bottom: var(--spacing-md);
}

.footer-description {
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
  opacity: 0.9;
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  font-size: 1.5rem;
  transition: var(--transition);
  text-decoration: none;
}

.social-link:hover {
  transform: scale(1.2);
}

.footer-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-yellow);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-white);
  text-decoration: none;
  opacity: 0.9;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-yellow);
  opacity: 1;
}

.footer-contact {
  margin-bottom: var(--spacing-sm);
  opacity: 0.9;
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0.8;
  font-size: 0.9rem;
}

.footer-note {
  margin-top: var(--spacing-sm);
  font-size: 0.85rem;
  opacity: 0.6;
  font-style: italic;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--color-black);
    transition: var(--transition);
    padding: var(--spacing-lg);
  }

  .nav.active {
    left: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
  }

  .mobile-toggle {
    display: flex;
  }

  .hero {
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-lg);
  }

  .hero-features {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .section {
    padding: var(--spacing-lg) 0;
  }

  .steps,
  .benefits-grid,
  .resources-grid,
  .plans-grid,
  .devices-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}