/* ==========================================================================
   🎙️ Изменение Голоса | Voice Changer — Landing Page Stylesheet
   Cyberpunk Neon Glassmorphism Aesthetic matching the official logo
   ========================================================================== */

:root {
  /* Color Palette */
  --bg-primary: #07080d;
  --bg-secondary: #0d0f18;
  --bg-tertiary: #131624;
  --bg-glass: rgba(19, 22, 36, 0.65);
  --bg-glass-hover: rgba(28, 33, 53, 0.85);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Brand Dual-Tone Accents */
  --neon-cyan: #00d2ff;
  --neon-blue: #0072ff;
  --neon-magenta: #ff007a;
  --neon-purple: #9b51e0;
  --neon-violet: #a855f7;

  /* Metallic Accents */
  --silver-light: #f1f5f9;
  --silver-mid: #cbd5e1;
  --silver-dark: #64748b;

  /* Gradients */
  --grad-brand: linear-gradient(135deg, #00d2ff 0%, #7928ca 50%, #ff007a 100%);
  --grad-cyan: linear-gradient(135deg, #00d2ff 0%, #0072ff 100%);
  --grad-magenta: linear-gradient(135deg, #ff007a 0%, #9b51e0 100%);
  --grad-dark-card: linear-gradient(180deg, rgba(25, 30, 48, 0.7) 0%, rgba(13, 15, 24, 0.9) 100%);
  --grad-border: linear-gradient(135deg, rgba(0, 210, 255, 0.4), rgba(255, 0, 122, 0.4));

  /* Glow Shadows */
  --glow-brand: 0 0 35px rgba(121, 40, 202, 0.4), 0 0 15px rgba(0, 210, 255, 0.3);
  --glow-cyan: 0 0 25px rgba(0, 210, 255, 0.4);
  --glow-magenta: 0 0 25px rgba(255, 0, 122, 0.4);
  --glow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 1px 1px rgba(255, 255, 255, 0.08);

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Layout */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  color-scheme: dark;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Ambient Background Glow Mesh */
.ambient-glow-left {
  position: fixed;
  top: -10vw;
  left: -15vw;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(0, 210, 255, 0.12) 0%, rgba(0, 114, 255, 0.05) 50%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-right {
  position: fixed;
  top: 20vh;
  right: -15vw;
  width: 55vw;
  height: 55vw;
  background: radial-gradient(circle, rgba(255, 0, 122, 0.12) 0%, rgba(155, 81, 224, 0.06) 50%, transparent 70%);
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.ambient-glow-center {
  position: absolute;
  top: 140vh;
  left: 25vw;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(121, 40, 202, 0.08) 0%, transparent 60%);
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.gradient-text {
  background: var(--grad-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-text-cyan {
  background: var(--grad-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-magenta {
  background: var(--grad-magenta);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(7, 8, 13, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  transition: var(--transition-smooth);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 1.5rem;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  min-width: max-content;
}

.logo-img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid rgba(0, 210, 255, 0.5);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.35);
  object-fit: cover;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.logo-brand:hover .logo-img {
  transform: scale(1.06) rotate(5deg);
}

.logo-text-group {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-subtitle {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  white-space: nowrap;
}

/* Nav Menu Desktop */
.nav-container {
  display: flex;
  align-items: center;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  white-space: nowrap;
  transition: color var(--transition-fast);
  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(--grad-brand);
  transition: width 0.25s ease;
  border-radius: 2px;
}

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

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-shrink: 0;
}

/* Hamburger Button */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.hamburger-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-cyan);
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger-btn.is-active .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background-color: var(--neon-cyan);
}

.hamburger-btn.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background-color: var(--neon-cyan);
}

.btn-full {
  width: 100%;
}

/* ==========================================================================
   Buttons & CTA System
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.65rem;
  padding: 0.75rem 1.75rem;
  border-radius: 9999px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  border: none;
  outline: none;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-brand);
  color: #ffffff;
  box-shadow: var(--glow-brand);
  border-radius: 9999px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 45px rgba(121, 40, 202, 0.65), 0 0 20px rgba(0, 210, 255, 0.5);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border-radius: 9999px;
  text-decoration: none;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-large {
  padding: 1rem 2.2rem;
  font-size: 1.12rem;
  font-weight: 700;
  border-radius: 9999px;
}

a.btn, a.btn:hover, a.btn:visited, a.btn:active, a.btn span {
  text-decoration: none !important;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 210, 255, 0.1);
  border: 1px solid rgba(0, 210, 255, 0.3);
  border-radius: var(--radius-full);
  color: var(--neon-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.15);
}

.badge-pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--neon-cyan);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--neon-cyan);
  animation: pulseDot 1.8s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.4); opacity: 1; box-shadow: 0 0 12px var(--neon-cyan); }
  100% { transform: scale(0.9); opacity: 0.8; }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  padding-top: 150px;
  padding-bottom: 90px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.hero-title {
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.12;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.6;
}

.hero-stats-row {
  display: flex;
  gap: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  width: 100%;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 800;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Hero Visual Showcase */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-card-glow-wrapper {
  position: relative;
  width: 100%;
  max-width: 440px;
}

.hero-logo-frame {
  position: relative;
  border-radius: 50%;
  padding: 10px;
  background: var(--grad-brand);
  box-shadow: var(--glow-brand);
  animation: floatLogo 5s ease-in-out infinite alternate;
}

@keyframes floatLogo {
  0% { transform: translateY(0px) rotate(0deg); }
  100% { transform: translateY(-12px) rotate(1deg); }
}

.hero-logo-img {
  width: 100%;
  height: auto;
  border-radius: 50%;
  display: block;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.8);
}

.hero-floating-badge {
  position: absolute;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(19, 22, 36, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.75rem 1.2rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 2;
  animation: floatBadge 4s ease-in-out infinite alternate;
}

.hero-floating-badge.badge-top-right {
  top: 10px;
  right: -20px;
  border-color: rgba(255, 0, 122, 0.4);
  box-shadow: 0 0 20px rgba(255, 0, 122, 0.25);
}

.hero-floating-badge.badge-bottom-left {
  bottom: 10px;
  left: -20px;
  border-color: rgba(0, 210, 255, 0.4);
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.25);
  animation-delay: 1.5s;
}

@keyframes floatBadge {
  0% { transform: translateY(0px); }
  100% { transform: translateY(-8px); }
}

/* ==========================================================================
   Interactive Voice Showcase (Audio Demo Player)
   ========================================================================== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(2rem, 3.2vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
}

/* Tabs */
.tabs-container {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.tab-btn {
  background: var(--bg-tertiary);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.tab-btn.active {
  background: var(--grad-brand);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 0 20px rgba(121, 40, 202, 0.4);
}

/* Voice Preset Grid */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.preset-card {
  background: var(--grad-dark-card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.25rem;
  transition: all var(--transition-smooth);
  backdrop-filter: blur(12px);
  cursor: pointer;
  overflow: hidden;
}

.preset-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--grad-brand);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.preset-card:hover {
  transform: translateY(-5px);
  border-color: rgba(0, 210, 255, 0.3);
  box-shadow: var(--glow-card), 0 0 25px rgba(0, 210, 255, 0.15);
}

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

.preset-card.is-playing {
  border-color: var(--neon-magenta);
  box-shadow: 0 0 30px rgba(255, 0, 122, 0.3);
}

.preset-card.is-playing::before {
  opacity: 1;
  background: var(--grad-magenta);
}

.preset-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preset-avatar-name {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.preset-emoji-badge {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.preset-meta h4 {
  font-size: 1.15rem;
  margin-bottom: 0.2rem;
}

.preset-category-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.preset-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.preset-audio-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(0, 0, 0, 0.3);
  padding: 0.65rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.play-demo-btn {
  background: var(--grad-cyan);
  color: #ffffff;
  border: none;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition-fast);
  box-shadow: 0 0 15px rgba(0, 210, 255, 0.35);
}

.preset-card.is-playing .play-demo-btn {
  background: var(--grad-magenta);
  box-shadow: 0 0 15px rgba(255, 0, 122, 0.45);
}

.play-demo-btn:hover {
  transform: scale(1.1);
}

.soundwave-bars {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 22px;
}

.wave-bar {
  width: 3px;
  height: 6px;
  background: var(--text-muted);
  border-radius: 2px;
  transition: height 0.15s ease, background 0.15s ease;
}

.preset-card.is-playing .wave-bar {
  background: var(--neon-cyan);
  animation: wavePulse 1s ease-in-out infinite alternate;
}

.preset-card.is-playing .wave-bar:nth-child(2) { animation-delay: 0.15s; background: var(--neon-blue); }
.preset-card.is-playing .wave-bar:nth-child(3) { animation-delay: 0.3s; background: var(--neon-purple); }
.preset-card.is-playing .wave-bar:nth-child(4) { animation-delay: 0.45s; background: var(--neon-magenta); }
.preset-card.is-playing .wave-bar:nth-child(5) { animation-delay: 0.2s; background: var(--neon-cyan); }
.preset-card.is-playing .wave-bar:nth-child(6) { animation-delay: 0.35s; background: var(--neon-violet); }

@keyframes wavePulse {
  0% { height: 4px; }
  100% { height: 22px; }
}

/* ==========================================================================
   Before / After Interactive Comparison Widget
   ========================================================================== */
.comparison-container {
  background: var(--grad-dark-card);
  border: 1px solid rgba(0, 210, 255, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6), var(--glow-brand);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  margin-top: 3rem;
}

.comparison-info h3 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.comparison-info p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.comparison-toggle-box {
  display: flex;
  background: rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-full);
  padding: 5px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 1.5rem;
  width: fit-content;
}

.toggle-switch-btn {
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.toggle-switch-btn.active {
  background: var(--grad-brand);
  color: #ffffff;
  box-shadow: 0 0 15px rgba(121, 40, 202, 0.4);
}

.visualizer-canvas-box {
  background: rgba(0, 0, 0, 0.6);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
}

#waveformCanvas {
  width: 100%;
  height: 90px;
}

/* ==========================================================================
   Technology & Acoustic Science (Praat PSOLA)
   ========================================================================== */
.tech-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
}

.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.tech-card-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.tech-feature-card {
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  display: flex;
  gap: 1.25rem;
  transition: transform var(--transition-fast);
}

.tech-feature-card:hover {
  transform: translateX(6px);
  border-color: rgba(255, 0, 122, 0.3);
}

.tech-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(255, 0, 122, 0.1);
  border: 1px solid rgba(255, 0, 122, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.tech-feature-content h4 {
  font-size: 1.1rem;
  margin-bottom: 0.3rem;
}

.tech-feature-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.vs-comparison-table {
  background: var(--grad-dark-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--glow-card);
}

.vs-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.vs-col-title {
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
}

.vs-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.95rem;
}

.vs-bad {
  color: #f87171;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.vs-good {
  color: #4ade80;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
}

/* ==========================================================================
   How It Works (3 Steps)
   ========================================================================== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  position: relative;
}

.step-card {
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2.2rem 1.8rem;
  position: relative;
  transition: transform var(--transition-smooth), border-color var(--transition-smooth);
}

.step-card:hover {
  transform: translateY(-6px);
  border-color: var(--neon-cyan);
  box-shadow: var(--glow-cyan);
}

.step-number {
  position: absolute;
  top: -15px;
  left: 25px;
  width: 38px;
  height: 38px;
  background: var(--grad-brand);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.1rem;
  box-shadow: 0 0 15px rgba(121, 40, 202, 0.5);
}

.step-icon-wrap {
  font-size: 2.5rem;
  margin-bottom: 1.2rem;
  margin-top: 0.5rem;
}

.step-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.step-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Pricing Section
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 2.5rem;
  max-width: 900px;
  margin: 0 auto;
  align-items: center;
}

.price-card {
  background: var(--grad-dark-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.75rem;
  position: relative;
  transition: transform var(--transition-smooth);
}

.price-card.featured {
  background: linear-gradient(180deg, rgba(32, 24, 56, 0.9) 0%, rgba(13, 15, 24, 0.95) 100%);
  border-color: rgba(255, 0, 122, 0.4);
  box-shadow: 0 0 40px rgba(121, 40, 202, 0.35);
  transform: scale(1.04);
}

.price-card.featured:hover {
  transform: scale(1.06);
}

.price-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 1.5rem;
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0.5rem 0;
}

.price-period {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.price-features li.active {
  color: var(--text-primary);
  font-weight: 500;
}

.feature-check {
  color: #4ade80;
  font-size: 1.1rem;
}

.payment-methods-strip {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  justify-content: center;
  padding-top: 0.5rem;
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.2);
}

.faq-item.active {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 20px rgba(0, 210, 255, 0.15);
}

.faq-question {
  padding: 1.3rem 1.7rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
}

.faq-chevron {
  transition: transform var(--transition-fast);
  color: var(--text-muted);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  background: rgba(0, 0, 0, 0.2);
}

.faq-answer-inner {
  padding: 0 1.7rem 1.4rem 1.7rem;
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.65;
}

/* ==========================================================================
   GEO / AI Knowledge Matrix Block (SEO / Perplexity / Yandex Neuro)
   ========================================================================== */
.geo-knowledge-section {
  background: rgba(13, 15, 24, 0.85);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 70px 0;
}

.geo-content-box {
  background: rgba(7, 8, 13, 0.6);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.geo-content-box h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.geo-content-box p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1rem;
  line-height: 1.65;
}

.geo-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.geo-tag {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Legal & Safety Section Styles
   ========================================================================== */
.safety-grid {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 960px;
  margin: 0 auto;
}

.safety-card {
  background: var(--grad-dark-card);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.safety-badge-warning {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: #fbbf24;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 1.2rem;
}

.main-warning-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.main-warning-card p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.65;
  margin-bottom: 0.85rem;
}

.safety-columns-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.safety-box {
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  padding: 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.safety-box.allowed-box {
  border: 1px solid rgba(74, 222, 128, 0.3);
  box-shadow: 0 0 25px rgba(74, 222, 128, 0.08);
}

.safety-box.prohibited-box {
  border: 1px solid rgba(248, 113, 113, 0.35);
  box-shadow: 0 0 25px rgba(248, 113, 113, 0.1);
}

.safety-box-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.safety-box-header h4 {
  font-size: 1.1rem;
}

.safety-box.allowed-box h4 {
  color: #4ade80;
}

.safety-box.prohibited-box h4 {
  color: #f87171;
}

.safety-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.safety-list li {
  position: relative;
  padding-left: 1.4rem;
}

.allowed-box .safety-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: #4ade80;
  font-weight: bold;
}

.prohibited-box .safety-list li::before {
  content: '✕';
  position: absolute;
  left: 0;
  color: #f87171;
  font-weight: bold;
}

.safety-table-card {
  background: var(--bg-glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.safety-table-card h4 {
  font-size: 1.2rem;
  margin-bottom: 1.25rem;
}

.safety-table-wrap {
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

.safety-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.safety-table th {
  background: rgba(255, 255, 255, 0.05);
  padding: 0.9rem 1.1rem;
  color: var(--text-primary);
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.safety-table td {
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-secondary);
}

.status-good {
  color: #4ade80;
  font-weight: 600;
}

.status-bad {
  color: #f87171;
  font-weight: 600;
}

.risk-low {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(74, 222, 128, 0.15);
  color: #4ade80;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.8rem;
}

.risk-high {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  background: rgba(248, 113, 113, 0.15);
  color: #f87171;
  border-radius: 4px;
  font-weight: 600;
  font-size: 0.8rem;
}

.safety-disclaimer-sub {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

@media (max-width: 768px) {
  .safety-columns-grid {
    grid-template-columns: 1fr;
  }
  .safety-card {
    padding: 1.5rem;
  }
}

/* ==========================================================================
   Final CTA Banner
   ========================================================================== */
.final-cta-section {
  padding: 100px 0;
}

.final-cta-card {
  background: radial-gradient(circle at center, rgba(121, 40, 202, 0.3) 0%, rgba(13, 15, 24, 0.95) 70%);
  border: 1px solid rgba(0, 210, 255, 0.35);
  border-radius: var(--radius-lg);
  padding: 4.5rem 2rem;
  text-align: center;
  box-shadow: 0 0 60px rgba(121, 40, 202, 0.3), var(--glow-cyan);
  position: relative;
  overflow: hidden;
}

.final-cta-card h2 {
  font-size: clamp(2.2rem, 3.8vw, 3.4rem);
  font-weight: 800;
  margin-bottom: 1.2rem;
}

.final-cta-card p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.2rem auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #040508;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 50px 0 30px 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-links {
  display: flex;
  gap: 1.8rem;
  list-style: none;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--neon-cyan);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Sticky Mobile CTA Bar */
.sticky-mobile-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: rgba(7, 8, 13, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid rgba(0, 210, 255, 0.3);
  z-index: 99;
  display: none;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   Responsive Breakpoints & Mobile Drawer
   ========================================================================== */
@media (max-width: 1120px) {
  .hamburger-btn {
    display: flex;
  }

  .nav-container {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(7, 8, 13, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid rgba(0, 210, 255, 0.25);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.85);
    padding: 1.25rem 1.5rem;
    transform: translateY(-15px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  }

  .nav-container.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-menu {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
    width: 100%;
  }

  .nav-link {
    display: block;
    padding: 0.8rem 1.2rem;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 1.05rem;
  }

  .nav-link:hover {
    background: rgba(0, 210, 255, 0.1);
    border-color: rgba(0, 210, 255, 0.3);
  }

  .mobile-nav-cta {
    display: block;
    margin-top: 0.75rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-content {
    align-items: center;
  }
  .hero-stats-row {
    justify-content: center;
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .comparison-container {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
  }
  .price-card.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .sticky-mobile-cta {
    display: flex;
  }
  .site-header {
    height: 68px;
  }
  .header-container {
    height: 68px;
  }
  .hero-section {
    padding-top: 105px;
  }
  .hero-floating-badge {
    display: none;
  }
}

@media (max-width: 480px) {
  .header-cta-btn {
    display: none;
  }
  .brand-subtitle {
    display: none;
  }
  .brand-title {
    font-size: 1.05rem;
  }
}