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

:root {
  --color-bg: #0a0a0a;
  --color-bg-secondary: #141414;
  --color-bg-tertiary: #1a1a1a;
  --color-text: #ffffff;
  --color-text-secondary: #a0a0a0;
  --color-primary: #3b82f6;
  --color-primary-hover: #2563eb;
  --color-accent: #10b981;
  --color-accent-hover: #059669;
  --color-border: #2a2a2a;
}

html {
  scroll-behavior: smooth;
}

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

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: all 0.3s ease;
}

.header.scrolled {
  border-bottom-color: var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 700;
}

.logo-text {
  color: var(--color-text);
}

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

.nav-menu {
  display: flex;
  list-style: none;
  gap: 32px;
  align-items: center;
}

.nav-menu a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s ease;
}

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  transition: all 0.3s ease;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

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

.btn-accent:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-full {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
}

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

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background-color: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 24px;
  font-size: 14px;
  color: var(--color-primary);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  line-height: 1.2;
  margin-bottom: 24px;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 20px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

.hero-cta {
  margin-bottom: 60px;
}

.hero-cta-note {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Section Styles */
section {
  padding: 100px 0;
}

.section-title {
  font-size: 42px;
  font-weight: 700;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: 60px;
}

/* Advantages Section */
.advantages {
  background-color: var(--color-bg-secondary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.advantage-card {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
  transition: all 0.3s ease;
}

.advantage-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.advantage-icon {
  width: 64px;
  height: 64px;
  background-color: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.advantage-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
}

.advantage-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Platforms Section */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 30px;
}

.platform-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px 32px;
  text-align: center;
  transition: all 0.3s ease;
}

.platform-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.platform-icon {
  color: var(--color-primary);
  margin-bottom: 24px;
}

.platform-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 8px;
}

.platform-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* How To Section */
.how-to {
  background-color: var(--color-bg-secondary);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.step-card {
  text-align: center;
  position: relative;
}

.step-number {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  font-weight: 700;
  margin: 0 auto 24px;
}

.step-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-text {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Special Offer Section */
.special-offer {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(16, 185, 129, 0.1));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.offer-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.offer-badge {
  display: inline-block;
  padding: 8px 16px;
  background-color: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 24px;
  font-size: 14px;
  color: var(--color-accent);
  margin-bottom: 20px;
}

.offer-title {
  font-size: 40px;
  font-weight: 700;
  margin-bottom: 16px;
}

.offer-text {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

/* Pricing Section */
.pricing {
  background-color: var(--color-bg-secondary);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 40px;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.pricing-card-popular {
  border-color: var(--color-primary);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), transparent);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: white;
  padding: 6px 16px;
  border-radius: 24px;
  font-size: 12px;
  font-weight: 600;
}

.pricing-badge-best {
  background-color: var(--color-accent);
}

.pricing-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 20px;
  text-align: center;
}

.pricing-price {
  text-align: center;
  margin-bottom: 12px;
}

.price-amount {
  font-size: 48px;
  font-weight: 700;
  color: var(--color-primary);
}

.price-period {
  font-size: 16px;
  color: var(--color-text-secondary);
}

.pricing-save {
  text-align: center;
  font-size: 14px;
  color: var(--color-accent);
  margin-bottom: 24px;
  font-weight: 600;
}

.pricing-features {
  list-style: none;
  margin-bottom: 32px;
}

.pricing-features li {
  padding: 12px 0;
  font-size: 15px;
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border);
}

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

/* SEO Content Section */
.seo-content {
  background-color: var(--color-bg-secondary);
}

.seo-block {
  max-width: 900px;
  margin: 0 auto 60px;
}

.seo-block:last-child {
  margin-bottom: 0;
}

.seo-block h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 20px;
}

.seo-block p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
}

.seo-block ul {
  list-style: none;
  margin: 24px 0;
}

.seo-block ul li {
  padding: 12px 0 12px 28px;
  position: relative;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.seo-block ul li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

.benefits-table {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  margin-top: 24px;
}

.benefit-row {
  display: grid;
  grid-template-columns: 1fr 2fr;
  border-bottom: 1px solid var(--color-border);
}

.benefit-row:last-child {
  border-bottom: none;
}

.benefit-col {
  padding: 20px;
  font-size: 15px;
  line-height: 1.6;
}

.benefit-col:first-child {
  background-color: rgba(59, 130, 246, 0.05);
  color: var(--color-text);
}

.benefit-col:last-child {
  color: var(--color-text-secondary);
}

/* Reviews Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.review-card {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 32px;
}

.review-stars {
  color: #fdb022;
  font-size: 18px;
  margin-bottom: 16px;
}

.review-text {
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.review-author {
  border-top: 1px solid var(--color-border);
  padding-top: 16px;
}

.author-name {
  font-weight: 600;
  margin-bottom: 4px;
}

.author-info {
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Guarantee Section */
.guarantee {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), transparent);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.guarantee-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.guarantee-icon {
  margin-bottom: 24px;
}

.guarantee-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.guarantee-text {
  font-size: 18px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

.guarantee-features {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.guarantee-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
}

/* FAQ Section */
.faq {
  background-color: var(--color-bg-secondary);
}

.faq-grid {
  display: grid;
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px;
}

.faq-question {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--color-text);
}

.faq-answer {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* Final CTA */
.final-cta {
  text-align: center;
  padding: 120px 0;
  background: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
}

.cta-title {
  font-size: 42px;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-subtitle {
  font-size: 18px;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
}

/* Footer */
.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
  margin-bottom: 40px;
}

.footer-brand {
  max-width: 400px;
}

.footer-description {
  margin-top: 16px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.footer-links {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.footer-column h4 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 12px;
}

.footer-column ul li a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer-column ul li a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    background-color: var(--color-bg);
    flex-direction: column;
    padding: 20px;
    transition: left 0.3s ease;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-menu.active {
    left: 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
  }

  .hero-title {
    font-size: 36px;
  }

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

  .hero-stats {
    gap: 30px;
  }

  .section-title {
    font-size: 32px;
  }

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

  .advantages-grid,
  .platforms-grid,
  .steps-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .benefit-row {
    grid-template-columns: 1fr;
  }

  .guarantee-features {
    flex-direction: column;
    align-items: center;
    gap: 20px;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
  }

  .offer-title {
    font-size: 28px;
  }

  .cta-title {
    font-size: 28px;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 28px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .section-title {
    font-size: 26px;
  }
}