/* ============================================================
   КапиТех Бокс — kapibox.ru
   Design System: Dark glassmorphism, aurora accents
   ============================================================ */

:root {
  --bg-primary: #060918;
  --bg-secondary: #0A0E27;
  --bg-tertiary: #0F1338;
  --accent-cyan: #00D4FF;
  --accent-purple: #7B61FF;
  --accent-coral: #FF6B6B;
  --accent-green: #00E5A0;
  --text-primary: #FFFFFF;
  --text-secondary: #A0AEC0;
  --text-muted: #4A5568;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-bg-hover: rgba(255, 255, 255, 0.08);
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --section-padding: 120px;
  --container-max: 1200px;
  --border-radius: 16px;
  --border-radius-sm: 8px;
  --border-radius-lg: 24px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  max-width: 100vw;
}

body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

::selection { background: var(--accent-cyan); color: var(--bg-primary); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glass Card */
.glass-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--border-radius);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

.glass-card > .card-glow {
  position: absolute !important;
  top: 0; left: 0; width: 100%; height: 100%;
  border-radius: inherit;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.glass-card > *:not(.card-glow) { position: relative; z-index: 1; }

.glass-card:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(255, 255, 255, 0.12);
}

/* ============ Navbar ============ */
.navbar {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(6, 9, 24, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  padding: 10px 0;
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-kapi { color: var(--text-primary); }
.logo-box { color: var(--accent-cyan); font-weight: 800; }

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-link:hover { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-link.active { color: var(--text-primary); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-login {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

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

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: var(--bg-primary);
  transition: all var(--transition-base);
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}

.nav-mobile-only { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#neural-canvas {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: 1;
}

.hero-aurora {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  z-index: 2;
  overflow: hidden;
  pointer-events: none;
}

.aurora-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  animation: auroraFloat 20s ease-in-out infinite;
  will-change: transform;
  contain: layout style;
}

.aurora-1 {
  width: 600px; height: 600px;
  background: radial-gradient(circle, var(--accent-cyan), transparent 70%);
  top: -15%; right: -10%;
}

.aurora-2 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, var(--accent-purple), transparent 70%);
  bottom: -10%; left: -10%;
  animation-delay: -7s;
}

.aurora-3 {
  width: 400px; height: 400px;
  background: radial-gradient(circle, var(--accent-green), transparent 70%);
  top: 40%; left: 40%;
  animation-delay: -14s;
  opacity: 0.15;
}

@keyframes auroraFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  25% { transform: translate(40px, -30px) scale(1.1); }
  50% { transform: translate(-20px, 20px) scale(0.95); }
  75% { transform: translate(30px, 40px) scale(1.05); }
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  padding: 0 24px;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  backdrop-filter: blur(8px);
}

.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent-green);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 229, 160, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 6px rgba(0, 229, 160, 0); }
}

.hero-logo-wrapper {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  line-height: 1.1;
}

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

.hero-logo-box {
  color: var(--accent-cyan);
  position: relative;
}

.hero-logo-box::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 100%; height: 4px;
  background: var(--accent-cyan);
  border-radius: 2px;
  opacity: 0.5;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.5;
}

.hero-subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1.0625rem);
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

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

.hero-stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: inline;
}

.hero-stat-suffix {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent-cyan);
  opacity: 0.7;
}

.hero-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-stat-divider {
  width: 1px;
  height: 40px;
  background: var(--glass-border);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
}

.scroll-line {
  width: 1px; height: 60px;
  background: linear-gradient(to bottom, var(--accent-cyan), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.6); }
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 100px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: var(--bg-primary);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.btn-glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: var(--glass-bg-hover);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* ============ Sections ============ */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header { text-align: center; margin-bottom: 64px; }

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 100px;
  background: rgba(0, 212, 255, 0.08);
  border: 1px solid rgba(0, 212, 255, 0.15);
  color: var(--accent-cyan);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============ Features ============ */
.features {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

/* Features tabs */
.features-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}
.features-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-weight: 500;
  font-family: var(--font-body);
  color: var(--text-secondary);
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  cursor: pointer;
  transition: all var(--transition-base);
}
.features-tab:hover {
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
}
.features-tab.active {
  background: rgba(0,212,255,0.1);
  color: var(--accent-cyan);
  border-color: rgba(0,212,255,0.25);
}
.tab-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Features carousel — grid on desktop, horizontal scroll on mobile */
.features-carousel {
  overflow: visible;
}
.features-track {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.features-track .feature-card {
  transition: opacity 0.3s, transform 0.3s;
}
.features-track .feature-card.hidden-card {
  display: none;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 32px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(circle at center, rgba(0, 212, 255, 0.03), transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

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

.feature-icon {
  width: 40px; height: 40px;
  color: var(--accent-cyan);
  margin-bottom: 20px;
}

.feature-icon.accent-purple { color: var(--accent-purple); }
.feature-icon.accent-coral { color: var(--accent-coral); }
.feature-icon.accent-green { color: var(--accent-green); }

.feature-card h3 {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex: 1;
}

.feature-level {
  display: inline-block;
  margin-top: 16px;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(0, 212, 255, 0.1);
  color: var(--accent-cyan);
  border: 1px solid rgba(0, 212, 255, 0.15);
  align-self: flex-start;
}

.feature-level.level-standard { background: rgba(0, 229, 160, 0.1); color: var(--accent-green); border-color: rgba(0, 229, 160, 0.15); }
.feature-level.level-advanced { background: rgba(123, 97, 255, 0.1); color: var(--accent-purple); border-color: rgba(123, 97, 255, 0.15); }
.feature-level.level-premium { background: rgba(255, 107, 107, 0.1); color: var(--accent-coral); border-color: rgba(255, 107, 107, 0.15); }
.feature-level.level-enterprise, .feature-level.level-corporate { background: rgba(255, 255, 255, 0.05); color: var(--text-secondary); border-color: rgba(255, 255, 255, 0.1); }

/* ============ How it works ============ */
.how-it-works {
  background: var(--bg-primary);
}

.steps-grid {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.step-card {
  padding: 40px 32px;
  text-align: center;
  flex: 1;
  max-width: 320px;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.3;
  margin-bottom: 16px;
}

.step-icon {
  width: 48px; height: 48px;
  margin: 0 auto 20px;
  color: var(--accent-cyan);
}

.step-icon.accent-purple { color: var(--accent-purple); }
.step-icon.accent-green { color: var(--accent-green); }

.step-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.step-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.step-arrow {
  flex-shrink: 0;
  width: 60px;
  color: var(--text-muted);
  opacity: 0.3;
  margin-top: 80px;
}

.privacy-banner {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 40px;
}

.privacy-icon {
  flex-shrink: 0;
  width: 64px; height: 64px;
  color: var(--accent-green);
}

.privacy-text h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.privacy-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ Pricing ============ */
.pricing {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 30%, var(--bg-secondary) 70%, var(--bg-primary) 100%);
}

.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 48px;
}

.toggle-label {
  font-size: 0.9375rem;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.toggle-label.active { color: var(--text-primary); font-weight: 600; }

.toggle-discount {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 100px;
  background: rgba(0, 229, 160, 0.15);
  color: var(--accent-green);
  font-size: 0.75rem;
  font-weight: 700;
}

.toggle-switch {
  width: 48px; height: 26px;
  border-radius: 13px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  position: relative;
  transition: all var(--transition-base);
}

.toggle-knob {
  position: absolute;
  top: 3px; left: 3px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--accent-cyan);
  transition: transform var(--transition-base);
}

.toggle-switch.active .toggle-knob { transform: translateX(22px); }
.toggle-switch.active { background: rgba(0, 212, 255, 0.15); }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.pricing-card {
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.pricing-card.featured {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.04);
}

.pricing-card.featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
}

.pricing-featured-tag {
  position: absolute;
  top: 12px; right: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: var(--bg-primary);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-header { margin-bottom: 20px; }

.pricing-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.pricing-desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.price-currency {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--accent-cyan);
  opacity: 0.7;
}

.price-period {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  margin-bottom: 28px;
  flex: 1;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.pricing-features li svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
}

.pricing-features li.included svg { color: var(--accent-green); }
.pricing-features li.excluded { opacity: 0.4; }
.pricing-features li.excluded svg { color: var(--text-muted); }

/* Enterprise Banner */
.enterprise-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 40px;
  margin-bottom: 80px;
}

.enterprise-content h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.enterprise-content p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 600px;
}

/* Subscription Info */
.subscription-info {
  padding: 48px;
  margin-bottom: 80px;
}

.subscription-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 36px;
}

.subscription-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

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

.sub-icon {
  width: 32px; height: 32px;
  margin: 0 auto 16px;
  color: var(--accent-cyan);
}

.sub-icon.accent-purple { color: var(--accent-purple); }
.sub-icon.accent-green { color: var(--accent-green); }

.sub-item h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.sub-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Device Section */
.device-section { margin-bottom: 80px; }

.device-section .section-header { margin-bottom: 40px; }

.device-card { padding: 48px; }

.device-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.device-specs {
  display: grid;
  gap: 16px;
}

.spec-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--glass-border);
}

.spec-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-shrink: 0;
  max-width: 40%;
}

.spec-value {
  font-size: 0.9375rem;
  font-weight: 500;
  text-align: right;
}

.device-price-block { text-align: center; }

.device-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 8px;
  margin-bottom: 12px;
}

.device-price-from {
  font-size: 1rem;
  color: var(--text-muted);
}

.device-price-amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.device-price-currency {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-cyan);
  opacity: 0.7;
}

.device-price-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

/* Payment Methods */
.payment-methods { margin-bottom: 40px; }

.payment-methods h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  margin-bottom: 32px;
}

.payment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.payment-card {
  padding: 28px 24px;
  text-align: center;
}

.payment-icon {
  width: 40px; height: 40px;
  margin: 0 auto 16px;
  color: var(--accent-cyan);
}

.payment-icon.accent-purple { color: var(--accent-purple); }
.payment-icon.accent-green { color: var(--accent-green); }

.payment-card h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.payment-card p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ FAQ ============ */
.faq { background: var(--bg-primary); }

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item { overflow: hidden; }

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

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

.faq-chevron {
  width: 20px; height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition-base);
  flex-shrink: 0;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer p {
  padding: 0 28px 24px;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============ Contact ============ */
.contact {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.contact-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
}

.contact-icon {
  width: 24px; height: 24px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 0.9375rem;
  font-weight: 500;
}

.contact-card {
  padding: 40px 32px;
  text-align: center;
}

.contact-card-logo {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.contact-card-divider {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  margin: 0 auto 20px;
}

.contact-card-text {
  margin-bottom: 28px;
}

.contact-card-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.7;
}

/* ============ Footer ============ */
.footer {
  padding: 60px 0 32px;
  border-top: 1px solid var(--glass-border);
}

.footer-content {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 64px;
  margin-bottom: 40px;
}

.footer-main .footer-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h4 {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.footer-col a, .footer-col span {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

.footer-col a:hover { color: var(--accent-cyan); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  text-align: center;
}

/* ============ Popup ============ */
.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.popup-overlay.hidden { display: none; }
.popup-card { animation: popupIn 0.3s ease; }
@keyframes popupIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

/* ============ Scroll Reveal ============ */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  :root { --section-padding: 80px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .features-track { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .device-info { grid-template-columns: 1fr; }
  .steps-grid { flex-direction: column; align-items: center; }
  .step-arrow { transform: rotate(90deg); margin: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  :root { --section-padding: 60px; }

  .nav-menu, .nav-actions { display: none; }
  .nav-toggle { display: flex; z-index: 1001; }

  .nav-menu.active {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100vh;
    background: rgba(6, 9, 24, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    gap: 24px;
    z-index: 999;
  }

  .nav-menu.active .nav-link {
    font-size: 1.25rem;
  }

  .nav-mobile-only {
    display: list-item;
    margin-top: 8px;
  }

  .nav-menu.active .nav-mobile-login {
    color: var(--text-primary);
    font-size: 1.1rem;
  }

  .nav-menu.active .nav-mobile-cta-link {
    color: var(--accent-cyan);
    font-size: 1.1rem;
    font-weight: 600;
  }

  .features-grid { grid-template-columns: 1fr; }
  .features-tabs { gap: 6px; justify-content: flex-start; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
  .features-tabs::-webkit-scrollbar { display: none; }
  .features-tab { white-space: nowrap; padding: 6px 12px; font-size: 0.75rem; flex-shrink: 0; }
  .features-carousel { overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; margin: 0 -20px; padding: 0 20px; scrollbar-width: none; overscroll-behavior-x: contain; }
  .features-carousel::-webkit-scrollbar { display: none; }
  .features-track { display: flex; gap: 16px; grid-template-columns: none; align-items: stretch; }
  .features-track .feature-card { min-width: 260px; max-width: 280px; flex-shrink: 0; height: auto; }
  /* Партнёры — карусель на мобильном */
  .partners-grid { display: flex !important; overflow-x: auto; overflow-y: hidden; -webkit-overflow-scrolling: touch; gap: 16px !important; margin: 0 -20px !important; padding: 0 20px 12px !important; scrollbar-width: none; grid-template-columns: none !important; }
  .partners-grid::-webkit-scrollbar { display: none; }
  .partners-grid > * { min-width: 260px; max-width: 300px; flex-shrink: 0; }
  .pricing-grid { grid-template-columns: 1fr; }
  .payment-grid { grid-template-columns: 1fr; }
  .enterprise-banner { flex-direction: column; text-align: center; gap: 24px; }
  .subscription-grid { grid-template-columns: 1fr; }
  .privacy-banner { flex-direction: column; text-align: center; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; gap: 24px; }

  .hero-stats {
    gap: 20px;
    padding: 0 16px;
  }

  .hero-stat-number { font-size: 1.5rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .pricing-card { padding: 28px 20px; }
  .device-card { padding: 28px 20px; }
  .privacy-banner { padding: 28px 20px; }
  .enterprise-banner { padding: 28px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .scroll-reveal { opacity: 1; transform: none; }
}