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

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --accent-blue: #3b82f6;
  --accent-pink: #ec4899;
  --accent-gold: #f59e0b;
  --border-color: #334155;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", "Cantarell", sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
}

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

/* Header */
.header {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

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

.logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

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

.nav a:hover {
  color: var(--accent-blue);
}

.cta-button-small {
  background: var(--accent-blue);
  color: white;
  padding: 10px 20px;
  border-radius: 8px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button-small:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

/* Hero Section */
.hero {
  padding: 80px 0 100px;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero h1 {
  font-size: 48px;
  line-height: 1.2;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff, var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 30px;
  line-height: 1.6;
}

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

.hero-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
}

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

.cta-button {
  display: inline-block;
  padding: 16px 32px;
  border-radius: 12px;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  transition: all 0.3s;
  font-size: 16px;
}

.cta-button.primary {
  background: linear-gradient(135deg, var(--accent-blue), #2563eb);
  color: white;
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

.cta-button.primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 40px rgba(59, 130, 246, 0.5);
}

.payment-icons {
  display: flex;
  gap: 16px;
  font-size: 14px;
  color: var(--text-secondary);
}

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.laptop-illustration {
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* Features Section */
.features {
  padding: 100px 0;
  background: var(--bg-primary);
}

.features h2 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 60px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

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

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-blue);
  box-shadow: 0 15px 40px rgba(59, 130, 246, 0.2);
}

.feature-icon {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon.blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent-blue);
}

.feature-icon.pink {
  background: rgba(236, 72, 153, 0.1);
  color: var(--accent-pink);
}

.feature-icon.gold {
  background: rgba(245, 158, 11, 0.1);
  color: var(--accent-gold);
}

.feature-card h3 {
  font-size: 22px;
  margin-bottom: 12px;
}

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

/* Instructions Section */
.instructions {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.instructions h2 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 20px;
}

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

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  max-width: 1000px;
  margin: 0 auto;
}

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

.step-number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-pink));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 24px;
}

.step-content h3 {
  font-size: 24px;
  margin-bottom: 12px;
}

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

/* Special Offer Section */
.special-offer {
  padding: 100px 0;
  background: var(--bg-primary);
}

.offer-card {
  max-width: 800px;
  margin: 0 auto;
  background: linear-gradient(135deg, #1e293b, #334155);
  border: 2px solid var(--accent-gold);
  border-radius: 24px;
  padding: 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.offer-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.1) 0%, transparent 70%);
  animation: rotate 10s linear infinite;
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

.offer-card > * {
  position: relative;
  z-index: 1;
}

.offer-badge {
  display: inline-block;
  background: var(--accent-gold);
  color: var(--bg-primary);
  padding: 8px 24px;
  border-radius: 20px;
  font-weight: 700;
  font-size: 14px;
  margin-bottom: 20px;
}

.offer-card h2 {
  font-size: 42px;
  margin-bottom: 20px;
}

.offer-card p {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 40px;
}

.timer {
  margin-bottom: 40px;
}

.timer-text {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.timer-display {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.timer-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 20px;
  min-width: 100px;
  display: flex;
  flex-direction: column;
}

.timer-block span:first-child {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-gold);
}

.timer-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.timer-separator {
  font-size: 36px;
  font-weight: 700;
  color: var(--accent-gold);
  display: flex;
  align-items: center;
}

.cta-button.large {
  font-size: 20px;
  padding: 20px 48px;
}

/* Tariffs Section */
.tariffs {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.tariffs h2 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 20px;
}

.tariffs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 60px;
}

.tariff-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: 16px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  transition: all 0.3s;
}

.tariff-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.tariff-card.popular {
  border-color: var(--accent-gold);
  position: relative;
}

.tariff-card.popular::before {
  content: "⭐ ПОПУЛЯРНО";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gold);
  color: var(--bg-primary);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 700;
}

.tariff-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
  align-self: flex-start;
}

.tariff-badge.blue {
  background: rgba(59, 130, 246, 0.2);
  color: var(--accent-blue);
}

.tariff-badge.pink {
  background: rgba(236, 72, 153, 0.2);
  color: var(--accent-pink);
}

.tariff-badge.gold {
  background: rgba(245, 158, 11, 0.2);
  color: var(--accent-gold);
}

.tariff-card h3 {
  font-size: 24px;
  margin-bottom: 20px;
}

.tariff-price {
  margin-bottom: 8px;
}

.tariff-price .price {
  font-size: 42px;
  font-weight: 700;
  color: var(--accent-blue);
}

.tariff-price .period {
  font-size: 16px;
  color: var(--text-secondary);
  margin-left: 8px;
}

.tariff-total {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 4px;
}

.tariff-save {
  color: var(--accent-gold);
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 24px;
}

.tariff-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

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

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

.tariff-button {
  display: block;
  background: linear-gradient(135deg, var(--accent-blue), #2563eb);
  color: white;
  padding: 16px 32px;
  border-radius: 12px;
  text-align: center;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s;
}

.tariff-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.tariff-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
}

/* SEO Section */
.seo-section {
  padding: 100px 0;
  background: var(--bg-primary);
}

.seo-section h2 {
  font-size: 40px;
  margin-bottom: 40px;
}

.seo-content {
  max-width: 900px;
}

.seo-content p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
  font-size: 16px;
}

.seo-content h3 {
  font-size: 28px;
  margin-top: 40px;
  margin-bottom: 16px;
  color: var(--accent-blue);
}

.seo-content ul {
  margin: 24px 0;
  padding-left: 24px;
}

.seo-content li {
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.6;
}

.seo-content strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* FAQ Section */
.faq {
  padding: 100px 0;
  background: var(--bg-secondary);
}

.faq h2 {
  font-size: 40px;
  text-align: center;
  margin-bottom: 60px;
}

.faq-list {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 16px;
  overflow: hidden;
}

.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px;
  cursor: pointer;
  transition: background 0.3s;
}

.faq-question:hover {
  background: rgba(59, 130, 246, 0.05);
}

.faq-question h3 {
  font-size: 18px;
  font-weight: 600;
}

.faq-question svg {
  transition: transform 0.3s;
  stroke: var(--accent-blue);
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
}

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

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

.faq-answer p {
  padding: 0 24px 24px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

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

.footer-text {
  color: var(--text-secondary);
  font-size: 14px;
  text-align: center;
}

/* Responsive Design */
@media (max-width: 968px) {
  .nav {
    display: none;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero h1 {
    font-size: 36px;
  }

  .hero-features {
    justify-content: center;
  }

  .hero-image {
    order: -1;
  }

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

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

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

  .offer-card {
    padding: 40px 24px;
  }

  .timer-display {
    flex-wrap: wrap;
  }
}

@media (max-width: 640px) {
  .hero h1 {
    font-size: 28px;
  }

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

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

  .offer-card h2 {
    font-size: 32px;
  }

  .timer-block {
    min-width: 80px;
    padding: 12px;
  }

  .timer-block span:first-child {
    font-size: 28px;
  }
}