/* CSS Variables */
:root {
  /* Colors - Balanced palette */
  --primary: #1d1d1f;
  --primary-light: #424245;
  --accent: #007AFF;
  --accent-light: #5AC8FA;
  --accent-dark: #0056CC;
  --success: #30D158;
  --warning: #FF9F0A;
  --error: #FF453A;

  /* Light theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-tertiary: #e8e8ed;
  --bg-card: #ffffff;
  --text-primary: #1d1d1f;
  --text-secondary: #86868b;
  --text-tertiary: #a1a1a6;
  --border: #d2d2d7;
  --border-light: #e5e5ea;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', monospace;

  /* Spacing - 8px grid */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;
  --space-32: 128px;

  /* Border radius */
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 50px;

  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark theme */
[data-theme="dark"] {
  --bg-primary: #000000;
  --bg-secondary: #1c1c1e;
  --bg-tertiary: #2c2c2e;
  --bg-card: #1c1c1e;
  --text-primary: #ffffff;
  --text-secondary: #98989d;
  --text-tertiary: #636366;
  --border: #38383a;
  --border-light: #2c2c2e;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.47;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  z-index: 1000;
  transition: var(--transition);
}

[data-theme="dark"] .navbar {
  background: rgba(0, 0, 0, 0.8);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: 20px;
  color: var(--text-primary);
  text-decoration: none;
}

.brand-icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-10);
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 400;
  font-size: 17px;
  transition: var(--transition);
  position: relative;
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.theme-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transform: scale(1.05);
}

.theme-icon {
  width: 20px;
  height: 20px;
}

.moon-icon {
  display: none;
}

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

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

.mobile-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
  gap: 4px;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
  border-radius: 1px;
}

@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--space-4);
  }

  .nav-menu {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-4) var(--space-8);
  font-size: 17px;
  font-weight: 500;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-large {
  padding: var(--space-5) var(--space-10);
  font-size: 19px;
}

.btn-full {
  width: 100%;
}

.btn svg {
  width: 18px;
  height: 18px;
}

.btn-large svg {
  width: 20px;
  height: 20px;
}

/* Hero Section */
.hero {
  padding: calc(72px + var(--space-32)) 0 var(--space-32);
  text-align: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(0, 122, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.hero-title {
  font-size: clamp(48px, 8vw, 80px);
  font-weight: 700;
  line-height: 1.05;
  margin-bottom: var(--space-8);
  color: var(--text-primary);
  letter-spacing: -0.025em;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 21px;
  line-height: 1.4;
  color: var(--text-secondary);
  margin-bottom: var(--space-12);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  margin-bottom: var(--space-20);
}

.hero-stats {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: 15px;
  color: var(--text-secondary);
}

/* Connection Demo */
.hero-visual {
  margin-top: var(--space-20);
}

.connection-demo {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 600px;
  margin: 0 auto;
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px);
}

.demo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
}

.demo-status {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
}

.status-dot {
  width: 10px;
  height: 10px;
  background: var(--success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.1);
  }
}

.demo-speed {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
}

.speed-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--success);
  font-variant-numeric: tabular-nums;
}

.speed-unit {
  font-size: 15px;
  color: var(--text-secondary);
}

.demo-map {
  height: 120px;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-8);
  position: relative;
  overflow: hidden;
}

.connection-line {
  position: absolute;
  top: 50%;
  left: 20%;
  right: 20%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-light), var(--accent));
  transform: translateY(-50%);
  border-radius: 2px;
  animation: flow 3s infinite;
}

@keyframes flow {
  0% {
    opacity: 0.4;
    transform: translateY(-50%) scaleX(0.8);
  }
  50% {
    opacity: 1;
    transform: translateY(-50%) scaleX(1);
  }
  100% {
    opacity: 0.4;
    transform: translateY(-50%) scaleX(0.8);
  }
}

.server-point {
  position: absolute;
  top: 50%;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border: 3px solid var(--bg-card);
  border-radius: 50%;
  transform: translateY(-50%);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
  animation: ping 2s infinite;
}

@keyframes ping {
  0% { box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2); }
  50% { box-shadow: 0 0 0 8px rgba(0, 122, 255, 0.1); }
  100% { box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2); }
}

.server-point.origin {
  left: 15%;
}

.server-point.destination {
  right: 15%;
}

.demo-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

.metric {
  text-align: center;
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
}

.metric-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-value {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 15px;
}

@media (max-width: 768px) {
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    gap: var(--space-10);
  }

  .demo-metrics {
    grid-template-columns: 1fr;
  }

  .connection-demo {
    padding: var(--space-6);
  }
}

/* Page Hero */
.page-hero {
  padding: calc(72px + var(--space-20)) 0 var(--space-20);
  text-align: center;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.page-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.page-subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.4;
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--space-20);
}

.section-title {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 19px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.4;
}

/* Features Section */
.features {
  padding: var(--space-32) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-10);
}

.feature-card {
  text-align: center;
  padding: var(--space-10);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent);
}

.feature-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-8);
  color: white;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
}

.feature-icon svg {
  width: 28px;
  height: 28px;
}

.feature-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 17px;
}

/* How It Works */
.how-it-works {
  padding: var(--space-32) 0;
  background: var(--bg-secondary);
}

.workflow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  max-width: 900px;
  margin: 0 auto;
}

.workflow-step {
  flex: 1;
  text-align: center;
  padding: var(--space-8);
  background: var(--bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.workflow-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-icon {
  width: 56px;
  height: 56px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  color: white;
  box-shadow: 0 4px 16px rgba(29, 29, 31, 0.3);
}

.step-icon svg {
  width: 24px;
  height: 24px;
}

.step-title {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.step-description {
  color: var(--text-secondary);
  line-height: 1.4;
  font-size: 15px;
}

.workflow-arrow {
  color: var(--text-tertiary);
  flex-shrink: 0;
}

.workflow-arrow svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .workflow {
    flex-direction: column;
    gap: var(--space-8);
  }

  .workflow-arrow {
    transform: rotate(90deg);
  }
}

/* Servers Section */
.servers {
  padding: var(--space-32) 0;
}

.servers-map {
  height: 400px;
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  margin-bottom: var(--space-20);
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
}

.server-locations {
  position: relative;
  height: 100%;
}

.server-location {
  position: absolute;
  cursor: pointer;
}

.location-dot {
  width: 14px;
  height: 14px;
  background: var(--accent);
  border: 3px solid var(--bg-card);
  border-radius: 50%;
  animation: pulse 3s infinite;
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.2);
}

.location-tooltip {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  font-size: 13px;
  white-space: nowrap;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.server-location:hover .location-tooltip {
  opacity: 1;
}

.servers-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-8);
}

.server-stat {
  text-align: center;
  padding: var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.server-stat:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.stat-icon {
  font-size: 32px;
  margin-bottom: var(--space-4);
}

.server-stat .stat-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--space-1);
}

.server-stat .stat-label {
  font-size: 15px;
  color: var(--text-secondary);
}

/* Pricing Section */
.pricing {
  padding: var(--space-32) 0;
  background: var(--bg-secondary);
}

.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  margin-bottom: var(--space-20);
}

.toggle-label {
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 17px;
}

.toggle-switch {
  position: relative;
  width: 56px;
  height: 32px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}

.toggle-switch.active {
  background: var(--accent);
  border-color: var(--accent);
}

.toggle-slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  background: white;
  border-radius: 50%;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.toggle-switch.active .toggle-slider {
  transform: translateX(24px);
}

.discount-badge {
  background: var(--success);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  margin-left: var(--space-3);
}

.pricing-cards,
.key-pricing-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-10);
  max-width: 1000px;
  margin: 0 auto;
}

.pricing-card,
.key-pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.pricing-card.featured,
.key-pricing-card.featured {
  border-color: var(--accent);
  box-shadow: var(--shadow-xl);
  transform: scale(1.05);
}

.pricing-card:hover,
.key-pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.pricing-card.featured:hover,
.key-pricing-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
}

.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: white;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 122, 255, 0.3);
}

.card-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.plan-name {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: var(--space-6);
  color: var(--text-primary);
}

.plan-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
}

.price-amount {
  font-size: 42px;
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.price-amount.yearly {
  display: none;
}

.pricing-toggle.active ~ .pricing-cards .price-amount.monthly,
.pricing-toggle.active ~ .key-pricing-cards .price-amount.monthly {
  display: none;
}

.pricing-toggle.active ~ .pricing-cards .price-amount.yearly,
.pricing-toggle.active ~ .key-pricing-cards .price-amount.yearly {
  display: block;
}

.price-period {
  font-size: 17px;
  color: var(--text-secondary);
}

.plan-description {
  color: var(--text-secondary);
  font-size: 15px;
}

.card-features {
  margin-bottom: var(--space-10);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-3) 0;
}

.feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--success);
  flex-shrink: 0;
}

.feature-item span {
  color: var(--text-secondary);
  font-size: 15px;
}

/* FAQ Section */
.faq {
  padding: var(--space-32) 0;
}

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

.faq-item {
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
}

.faq-question {
  width: 100%;
  padding: var(--space-8);
  background: none;
  border: none;
  text-align: left;
  font-size: 17px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--accent);
}

.faq-icon {
  width: 18px;
  height: 18px;
  color: var(--text-tertiary);
  transition: var(--transition);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 var(--space-8) var(--space-8);
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 15px;
}

/* Downloads Section */
.downloads {
  padding: var(--space-32) 0;
}

.downloads-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-10);
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.download-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.download-header {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.platform-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: var(--shadow-md);
}

.platform-icon.windows { background: linear-gradient(135deg, #0078d4, #106ebe); }
.platform-icon.macos { background: linear-gradient(135deg, #007aff, #0056cc); }
.platform-icon.linux { background: linear-gradient(135deg, #fcc419, #fab005); }
.platform-icon.ios { background: linear-gradient(135deg, #007aff, #0056cc); }
.platform-icon.android { background: linear-gradient(135deg, #34c759, #30d158); }
.platform-icon.browser { background: linear-gradient(135deg, var(--accent), var(--accent-dark)); }

.platform-icon svg {
  width: 28px;
  height: 28px;
}

.platform-name {
  font-size: 22px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.platform-desc {
  color: var(--text-secondary);
  font-size: 15px;
}

.download-details {
  margin-bottom: var(--space-8);
}

.detail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--border-light);
}

.detail-item:last-child {
  border-bottom: none;
}

.detail-label {
  color: var(--text-secondary);
  font-size: 15px;
}

.detail-value {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 15px;
}

.download-options {
  display: flex;
  gap: var(--space-3);
}

.download-options .btn {
  flex: 1;
}

.store-link {
  display: block;
  transition: var(--transition);
  border-radius: var(--radius);
  overflow: hidden;
}

.store-link:hover {
  transform: scale(1.02);
}

.store-link img {
  width: 100%;
  height: auto;
}

/* Installation Guide */
.installation-guide {
  padding: var(--space-32) 0;
  background: var(--bg-secondary);
}

.guide-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-3);
  margin-bottom: var(--space-20);
  flex-wrap: wrap;
}

.tab-btn {
  padding: var(--space-4) var(--space-8);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-weight: 500;
  font-size: 15px;
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(29, 29, 31, 0.3);
}

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

.guide-tab {
  display: none;
}

.guide-tab.active {
  display: block;
}

.guide-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.guide-step {
  display: flex;
  gap: var(--space-6);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.guide-step:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step-number {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 17px;
  flex-shrink: 0;
  box-shadow: 0 4px 16px rgba(29, 29, 31, 0.3);
}

.step-content h4 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.step-content p {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 15px;
}

.step-content code {
  background: var(--bg-secondary);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  border: 1px solid var(--border);
}

/* System Requirements */
.system-requirements {
  padding: var(--space-32) 0;
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.requirement-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.requirement-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.req-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.req-icon {
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  border: 1px solid var(--border);
}

.req-icon svg {
  width: 20px;
  height: 20px;
}

.requirement-card h4 {
  font-size: 19px;
  font-weight: 600;
  color: var(--text-primary);
}

.req-list {
  list-style: none;
}

.req-list li {
  color: var(--text-secondary);
  padding: var(--space-2) 0;
  position: relative;
  padding-left: var(--space-6);
  font-size: 15px;
  line-height: 1.4;
}

.req-list li::before {
  content: '•';
  color: var(--accent);
  position: absolute;
  left: 0;
  font-weight: bold;
  font-size: 17px;
}

/* Key Form Section */
.key-form-section {
  padding: var(--space-32) 0;
}

.key-pricing {
  padding: var(--space-20) 0;
  background: var(--bg-secondary);
}

.form-container,
.success-container {
  max-width: 600px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(20px);
}

.success-container {
  display: none;
  text-align: center;
}

.form-header {
  text-align: center;
  margin-bottom: var(--space-10);
}

.form-icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  color: white;
  box-shadow: 0 8px 24px rgba(0, 122, 255, 0.3);
}

.form-icon svg {
  width: 28px;
  height: 28px;
}

.form-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.form-subtitle {
  color: var(--text-secondary);
  line-height: 1.4;
  font-size: 17px;
}

.key-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-6);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
  font-size: 15px;
}

.form-group input,
.form-group select {
  padding: var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 15px;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.input-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: var(--space-2);
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
  font-size: 15px;
  line-height: 1.4;
}

.checkbox-label input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  flex-shrink: 0;
  position: relative;
  transition: var(--transition);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
  content: '';
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.checkbox-text {
  color: var(--text-secondary);
}

.link {
  color: var(--accent);
  text-decoration: none;
}

.link:hover {
  text-decoration: underline;
}

.submit-btn {
  position: relative;
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-loading {
  display: none;
}

.btn-loading svg {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Success Message */
.success-icon {
  width: 80px;
  height: 80px;
  background: var(--success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-8);
  color: white;
  box-shadow: 0 8px 24px rgba(48, 209, 88, 0.3);
}

.success-icon svg {
  width: 40px;
  height: 40px;
}

.success-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.success-subtitle {
  color: var(--text-secondary);
  margin-bottom: var(--space-10);
  font-size: 17px;
}

.highlight {
  color: var(--accent);
  font-weight: 600;
}

.key-display {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
}

.key-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.key-header h3 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.key-header p {
  color: var(--text-secondary);
  font-size: 13px;
}

.key-value-container {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.key-value {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: var(--accent);
  text-align: center;
}

.copy-btn {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.copy-btn:hover {
  background: var(--border);
  color: var(--text-primary);
  transform: scale(1.05);
}

.copy-btn svg {
  width: 16px;
  height: 16px;
}

.activation-guide {
  text-align: left;
  margin-bottom: var(--space-10);
}

.activation-guide h4 {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.guide-list {
  color: var(--text-secondary);
  padding-left: var(--space-6);
  font-size: 15px;
}

.guide-list li {
  margin-bottom: var(--space-3);
  line-height: 1.4;
}

.success-actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
}

/* Key Info */
.key-info {
  padding: var(--space-32) 0;
  background: var(--bg-secondary);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
}

.info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.info-icon {
  width: 56px;
  height: 56px;
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
  color: var(--accent);
  border: 1px solid var(--border);
}

.info-icon svg {
  width: 24px;
  height: 24px;
}

.info-title {
  font-size: 19px;
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.info-description {
  color: var(--text-secondary);
  line-height: 1.4;
  font-size: 15px;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-20) 0 var(--space-10);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-20);
  margin-bottom: var(--space-16);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: 20px;
  color: var(--text-primary);
}

.footer-brand .brand-icon {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-10);
}

.link-group h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

.link-group a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-3);
  transition: var(--transition);
  font-size: 15px;
}

.link-group a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-10);
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  color: var(--text-tertiary);
  font-size: 15px;
}

.social-links {
  display: flex;
  gap: var(--space-4);
}

.social-links a {
  width: 40px;
  height: 40px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(29, 29, 31, 0.3);
}

.social-links svg {
  width: 18px;
  height: 18px;
}

/* Animations */
[data-aos] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-aos].aos-animate {
  opacity: 1;
  transform: translateY(0);
}

[data-aos="fade-right"] {
  transform: translateX(-30px);
}

[data-aos="fade-right"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-left"] {
  transform: translateX(30px);
}

[data-aos="fade-left"].aos-animate {
  transform: translateX(0);
}

[data-aos="fade-up"] {
  transform: translateY(30px);
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 768px) {
  .mobile-hide {
    display: none;
  }
  .hero {
    padding: 120px 0 0 0 !important;
  }
  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }

  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-6);
    text-align: center;
  }

  .pricing-cards,
  .key-pricing-cards {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .footer-links {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: var(--space-8);
  }

  .workflow {
    gap: var(--space-6);
  }
}

/* Mobile menu styles */
@media (max-width: 768px) {
  .nav-menu.mobile-open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    flex-direction: column;
    padding: var(--space-8);
    gap: var(--space-6);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
    backdrop-filter: blur(20px);
  }

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

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

  .mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
}

/* Loading states */
.btn.loading {
  pointer-events: none;
}

.btn.loading .btn-text {
  opacity: 0;
}

.btn.loading .btn-loading {
  display: block;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* Smooth scrolling for Safari */
@supports (-webkit-appearance: none) {
  html {
    scroll-behavior: auto;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --border: #000000;
    --shadow: none;
    --shadow-md: none;
    --shadow-lg: none;
    --shadow-xl: none;
  }

  [data-theme="dark"] {
    --border: #ffffff;
  }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}