:root {
  --color-background: #ffffff;
  --color-foreground: #000000;
  --color-card: #f5f5f7;
  --color-card-hover: #e8e8ed;
  --color-border: #d2d2d7;
  --color-primary: #007aff;
  --color-primary-hover: #0051d5;
  --color-secondary: #f5f5f7;
  --color-secondary-hover: #e8e8ed;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-text-tertiary: #6e6e73;
  --color-success: #34c759;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-lg: rgba(0, 0, 0, 0.12);

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  --color-background: #000000;
  --color-foreground: #ffffff;
  --color-card: #1c1c1e;
  --color-card-hover: #2c2c2e;
  --color-border: #38383a;
  --color-primary: #0a84ff;
  --color-primary-hover: #409cff;
  --color-secondary: #1c1c1e;
  --color-secondary-hover: #2c2c2e;
  --color-text-primary: #f5f5f7;
  --color-text-secondary: #98989d;
  --color-text-tertiary: #8e8e93;
  --color-success: #30d158;
  --color-shadow: rgba(0, 0, 0, 0.3);
  --color-shadow-lg: rgba(0, 0, 0, 0.5);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-background);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base), border-color var(--transition-base);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.8;
}

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

.logo-text {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

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

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-secondary);
  border: none;
  cursor: pointer;
  transition: background-color var(--transition-fast);
  color: var(--color-text-primary);
}

.theme-toggle:hover {
  background-color: var(--color-secondary-hover);
}

.theme-toggle .sun-icon {
  display: block;
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

.hero {
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

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

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-text-primary), var(--color-text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-3xl);
}

.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
  text-decoration: none;
  text-align: center;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 8px 16px var(--color-shadow-lg);
}

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

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

.btn-full {
  width: 100%;
  justify-content: center;
  white-space: normal;
  line-height: 1.3;
  min-height: 52px;
  padding: 0.875rem 1.25rem;
}

.btn-large {
  padding: 1.125rem 2.25rem;
  font-size: 1.125rem;
}

.hero-stats {
  display: flex;
  gap: var(--spacing-3xl);
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.features {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-card);
}

.features-grid {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  max-width: 900px;
}

.setup {
  padding: var(--spacing-4xl) 0;
}

.setup-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-3xl);
  max-width: 900px;
  margin: 0 auto;
}

.setup-step {
  display: flex;
  gap: var(--spacing-xl);
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.35);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.step-number::before {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: linear-gradient(135deg, #007aff, #00c6ff);
  opacity: 0;
  filter: blur(12px);
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.setup-step:hover .step-number {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(0, 122, 255, 0.5);
}

.setup-step:hover .step-number::before {
  opacity: 0.6;
}

.step-content {
  flex: 1;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.03) 0%,
    rgba(0, 198, 255, 0.03) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.08);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.step-content::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.08) 0%,
    rgba(0, 198, 255, 0.08) 100%);
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.step-content:hover::before {
  opacity: 1;
}

.step-content:hover {
  transform: translateY(-4px) translateX(8px);
  box-shadow: 0 20px 40px rgba(0, 122, 255, 0.15);
  border-color: rgba(0, 122, 255, 0.2);
}

.step-content > * {
  position: relative;
  z-index: 1;
}

.step-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.1) 0%,
    rgba(0, 198, 255, 0.1) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  border: 2px solid rgba(0, 122, 255, 0.15);
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.step-content:hover .step-icon {
  transform: scale(1.05);
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.2);
  border-color: rgba(0, 122, 255, 0.3);
}

.step-icon svg {
  width: 40px;
  height: 40px;
  stroke-width: 2.5;
}

.step-title {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.step-description {
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: 1.8;
  font-weight: 400;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.section-description {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  margin-bottom: var(--spacing-3xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.05) 0%,
    rgba(0, 198, 255, 0.05) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.1);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.1) 0%,
    rgba(0, 198, 255, 0.1) 100%);
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 0;
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 24px 48px rgba(0, 122, 255, 0.2);
  border-color: rgba(0, 122, 255, 0.3);
}

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

.feature-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  color: white;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
  box-shadow: 0 12px 32px rgba(0, 122, 255, 0.4);
}

.feature-icon svg {
  width: 36px;
  height: 36px;
  stroke-width: 2.5;
}

.feature-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.feature-description {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.7;
  font-weight: 400;
}

.servers {
  padding: var(--spacing-4xl) 0;
}

.servers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.server-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
}

.server-card:hover {
  background-color: var(--color-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px var(--color-shadow);
}

.server-flag {
  font-size: 2.5rem;
  flex-shrink: 0;
}

.server-info {
  flex: 1;
  min-width: 0;
}

.server-name {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.server-location {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.server-stats {
  display: flex;
  gap: var(--spacing-md);
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

.server-stat {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.server-stat svg {
  color: var(--color-primary);
}

.server-load {
  white-space: nowrap;
}

.server-status {
  font-size: 1.5rem;
  color: var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.pricing {
  padding: var(--spacing-4xl) 0;
  background-color: var(--color-card);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--color-background);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 2px solid var(--color-border);
  position: relative;
  transition: all var(--transition-base);
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px var(--color-shadow);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  transform: scale(1.05);
}

.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-4px);
}

.featured-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--color-primary);
  color: white;
  padding: 0.375rem 1rem;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.pricing-price {
  margin-bottom: var(--spacing-sm);
}

.price-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.price-period {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
}

.pricing-save {
  color: var(--color-success);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

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

.pricing-features li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
}

.pricing-features li::before {
  content: "✓";
  color: var(--color-success);
  font-weight: bold;
  margin-right: var(--spacing-sm);
  font-size: 1.125rem;
}

.cta {
  padding: var(--spacing-4xl) 0;
  text-align: center;
}

.cta-content {
  max-width: 700px;
  margin: 0 auto;
  padding: var(--spacing-3xl);
  background: linear-gradient(135deg, var(--color-primary), #00c6ff);
  border-radius: var(--radius-xl);
  color: white;
}

.cta-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.cta-description {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

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

.cta-content .btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
}

.footer {
  background-color: var(--color-card);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

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

.footer-section a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-section a:hover {
  color: var(--color-text-primary);
}

.footer-description {
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  margin-top: var(--spacing-md);
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .nav-links {
    gap: var(--spacing-md);
  }

  .nav-links a {
    display: none;
  }

  .hero {
    padding: var(--spacing-3xl) 0;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

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

  .setup-step {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .step-number {
    width: 48px;
    height: 48px;
    font-size: 1.25rem;
  }

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

  .pricing-card.featured:hover {
    transform: translateY(-4px);
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .hero-stats {
    gap: var(--spacing-xl);
  }

  .stat-value {
    font-size: 1.5rem;
  }

  .server-card {
    padding: var(--spacing-md);
  }

  .server-flag {
    font-size: 2rem;
  }
}

.page-hero {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.page-title {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
}

.page-description {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

.install-section {
  padding: var(--spacing-4xl) 0;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-4xl);
}

.platform-card {
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.03) 0%,
    rgba(0, 198, 255, 0.03) 100%);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.1);
  text-align: center;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.platform-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.08) 0%,
    rgba(0, 198, 255, 0.08) 100%);
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.platform-card:hover::before {
  opacity: 1;
}

.platform-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(0, 122, 255, 0.15);
  border-color: rgba(0, 122, 255, 0.2);
}

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

.featured-platform {
  border-color: rgba(0, 122, 255, 0.2);
}

.platform-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  color: white;
  padding: 0.375rem 0.875rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  z-index: 2;
}

.platform-icon {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.platform-card:hover .platform-icon {
  transform: scale(1.05);
}

.platform-name {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.platform-version {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-xs);
}

.platform-requirements {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
}

.install-help {
  text-align: center;
  padding: var(--spacing-3xl);
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.08) 0%,
    rgba(0, 198, 255, 0.08) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.2);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 122, 255, 0.15);
}

.install-help::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #007aff 0%, #00c6ff 100%);
}

.install-help h3 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.install-help p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.get-key-section {
  padding: var(--spacing-4xl) 0;
}

.key-instruction-card {
  max-width: 800px;
  margin: 0 auto var(--spacing-4xl);
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.05) 0%,
    rgba(0, 198, 255, 0.05) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--spacing-3xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.15);
  text-align: center;
}

.telegram-icon-large {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  border-radius: var(--radius-xl);
  color: white;
  box-shadow: 0 12px 32px rgba(0, 122, 255, 0.3);
}

.instruction-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-3xl);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
}

.instruction-steps {
  text-align: left;
  margin-bottom: var(--spacing-3xl);
}

.instruction-step {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  align-items: flex-start;
}

.instruction-step:last-child {
  margin-bottom: 0;
}

.instruction-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25);
}

.instruction-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.instruction-content p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.telegram-bot-link {
  text-align: center;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.telegram-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.telegram-btn svg {
  flex-shrink: 0;
}

.bot-username {
  font-size: 1rem;
  color: var(--color-text-tertiary);
  font-family: monospace;
}

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

.info-card {
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.05) 0%,
    rgba(0, 198, 255, 0.05) 100%);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 122, 255, 0.15);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.info-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg,
    rgba(0, 122, 255, 0.08) 0%,
    rgba(0, 198, 255, 0.08) 100%);
  opacity: 0;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover::before {
  opacity: 1;
}

.info-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0, 122, 255, 0.2);
  border-color: rgba(0, 122, 255, 0.25);
}

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

.info-icon {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, #007aff 0%, #00c6ff 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  color: white;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.info-card:hover .info-icon {
  transform: scale(1.1) rotate(5deg);
  box-shadow: 0 12px 32px rgba(0, 122, 255, 0.45);
}

.info-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

.info-card p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.info-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.info-card ul li {
  padding: var(--spacing-sm) 0;
  color: var(--color-text-secondary);
  font-size: 0.9375rem;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.info-card ul li::before {
  content: "•";
  color: var(--color-primary);
  font-weight: bold;
  font-size: 1.25rem;
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .platforms-grid {
    grid-template-columns: 1fr;
  }

  .instruction-step {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .additional-info {
    grid-template-columns: 1fr;
  }
}