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

:root {
  --primary-color: #00d4aa;
  --primary-dark: #00b894;
  --secondary-color: #1a1a2e;
  --text-dark: #16213e;
  --text-light: #6b7280;
  --bg-light: #f9fafb;
  --white: #ffffff;
  --gradient: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
}

html {
  scroll-behavior: smooth;
}

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

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

/* Navigation */
.navbar {
  background: var(--white);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-text {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-dark);
}

.logo-vpn {
  color: var(--primary-color);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 30px;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-dark);
  font-weight: 500;
  transition: color 0.3s;
}

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

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #00d4aa 0%, #00b894 100%);
  padding: 100px 0;
  color: var(--white);
  text-align: center;
}

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

.hero h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 20px;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 20px;
  margin-bottom: 30px;
  opacity: 0.95;
}

.hero-features {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.feature-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.2);
  padding: 10px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
}

.cta-button {
  display: inline-block;
  background: var(--white);
  color: var(--primary-color);
  padding: 16px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 700;
  font-size: 18px;
  transition: transform 0.3s, box-shadow 0.3s;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

/* Advantages Section */
.advantages {
  padding: 80px 0;
  background: var(--bg-light);
}

.advantages h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 50px;
  color: var(--text-dark);
}

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

.advantage-card {
  background: var(--white);
  padding: 40px 30px;
  border-radius: 16px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
}

.advantage-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 212, 170, 0.2);
}

.advantage-icon {
  margin-bottom: 20px;
}

.advantage-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.advantage-card p {
  color: var(--text-light);
  line-height: 1.8;
}

/* How To Section */
.how-to {
  padding: 80px 0;
  background: var(--white);
}

.how-to h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 60px;
  color: var(--text-dark);
}

.steps {
  display: flex;
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

.step {
  flex: 1;
  display: flex;
  gap: 20px;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--gradient);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.step-content p {
  color: var(--text-light);
  line-height: 1.8;
}

/* CTA Secondary Section */
.cta-secondary {
  background: var(--secondary-color);
  color: var(--white);
  padding: 80px 0;
  text-align: center;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
}

.cta-content p {
  font-size: 18px;
  margin-bottom: 40px;
  opacity: 0.9;
}

/* Pricing Section */
.pricing {
  padding: 80px 0;
  background: var(--bg-light);
}

.pricing h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.pricing-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 50px;
  font-size: 18px;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--white);
  border-radius: 20px;
  padding: 40px 30px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s, box-shadow 0.3s;
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 212, 170, 0.2);
}

.pricing-card-popular {
  border: 3px solid var(--primary-color);
  transform: scale(1.05);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-color);
  color: var(--white);
  padding: 8px 24px;
  border-radius: 50px;
  font-weight: 700;
  font-size: 14px;
}

.pricing-header {
  text-align: center;
  margin-bottom: 30px;
}

.pricing-header h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-dark);
}

.price {
  margin-bottom: 10px;
}

.price-amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary-color);
}

.price-period {
  font-size: 18px;
  color: var(--text-light);
}

.price-total {
  font-size: 16px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.discount-badge {
  display: inline-block;
  background: rgba(0, 212, 170, 0.1);
  color: var(--primary-color);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 700;
}

.pricing-features {
  list-style: none;
  margin-bottom: 30px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  color: var(--text-dark);
}

.pricing-button {
  display: block;
  width: 100%;
  background: var(--gradient);
  color: var(--white);
  padding: 16px;
  border-radius: 50px;
  text-align: center;
  text-decoration: none;
  font-weight: 700;
  transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 212, 170, 0.4);
}

/* Devices Section */
.devices {
  padding: 80px 0;
  background: var(--white);
}

.devices h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--text-dark);
}

.devices-subtitle {
  text-align: center;
  color: var(--text-light);
  margin-bottom: 50px;
  font-size: 18px;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.devices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1100px;
  margin: 0 auto;
}

.device-card {
  background: var(--bg-light);
  border-radius: 16px;
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
}

.device-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 212, 170, 0.2);
}

.device-icon {
  margin-bottom: 20px;
}

.device-card h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-dark);
}

.device-card p {
  color: var(--text-light);
  margin-bottom: 25px;
}

.device-button {
  display: inline-block;
  background: var(--primary-color);
  color: var(--white);
  padding: 12px 40px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: background 0.3s, transform 0.3s;
}

.device-button:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* FAQ Section */
.faq {
  padding: 80px 0;
  background: var(--bg-light);
}

.faq h2 {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 50px;
  color: var(--text-dark);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: 12px;
  margin-bottom: 20px;
  overflow: hidden;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.faq-question {
  padding: 25px 30px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.3s;
}

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

.faq-question h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
}

.faq-answer {
  padding: 0 30px 25px 30px;
}

.faq-answer p {
  color: var(--text-light);
  line-height: 1.8;
}

/* Footer */
.footer {
  background: var(--secondary-color);
  color: var(--white);
  padding: 60px 0 30px;
}

.footer-content {
  text-align: center;
}

.footer-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-text {
  max-width: 600px;
  margin: 0 auto 20px;
  opacity: 0.8;
}

.footer-copyright {
  opacity: 0.6;
  font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .hero h1 {
    font-size: 32px;
  }

  .hero-subtitle {
    font-size: 16px;
  }

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

  .steps {
    flex-direction: column;
  }

  .pricing-grid,
  .devices-grid,
  .advantages-grid {
    grid-template-columns: 1fr;
  }

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

  h2 {
    font-size: 28px !important;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 60px 0;
  }

  .hero h1 {
    font-size: 28px;
  }

  .cta-button {
    padding: 14px 30px;
    font-size: 16px;
  }
}