/* ==========================================================================
   CineVault — Official Product Website Styles
   Design System: Obsidian Cinema (Derived from Stitch Architecture)
   ========================================================================== */

/* 1. Global Reset & Custom Properties */
:root {
  /* Obsidian Palette */
  --bg-void: #090A0F;
  --bg-surface: #0E1017;
  --bg-surface-elevated: #161923;
  --bg-surface-card: #121318;
  --bg-surface-glass: rgba(14, 16, 23, 0.78);
  --bg-surface-glass-high: rgba(22, 25, 35, 0.88);

  /* Accents - Rich Dark Royal & Midnight Cobalt Cinema Blue */
  --primary: #1D4ED8;
  --primary-hover: #1E40AF;
  --primary-glow: rgba(29, 78, 216, 0.32);
  --primary-glow-subtle: rgba(29, 78, 216, 0.15);
  --primary-gradient: linear-gradient(135deg, #2563EB 0%, #1D4ED8 65%, #1E3A8A 100%);

  --gold: #D4AF37;
  --gold-glow: rgba(212, 175, 55, 0.22);
  --gold-subtle: rgba(212, 175, 55, 0.1);

  --telegram: #29A9EB;
  --telegram-glow: rgba(41, 169, 235, 0.25);
  --telegram-subtle: rgba(41, 169, 235, 0.1);

  --green: #22C55E;
  --green-glow: rgba(34, 197, 94, 0.2);
  --green-subtle: rgba(34, 197, 94, 0.1);

  /* Hairline Borders & Specular Edges */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --border-active: rgba(255, 255, 255, 0.24);

  /* Typography Colors */
  --text-high: #F8FAFC;
  --text-muted: #94A3B8;
  --text-faint: #475569;
  --text-inverse: #090A0F;

  /* Font Families */
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Space Grotesk', ui-monospace, SFMono-Regular, monospace;

  /* Layout */
  --container-max: 1240px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-smooth: transform 0.2s ease, opacity 0.2s ease, border-color 0.2s ease;
}

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

img, picture, video {
  max-width: 100%;
  height: auto;
}

html {
  font-family: var(--font-main);
  background-color: var(--bg-void);
  color: var(--text-high);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  scroll-padding-top: 96px;
  -webkit-overflow-scrolling: touch;
}

#features,
#showcase,
#installation,
#faq,
#download,
.official-footer {
  scroll-margin-top: 96px;
  content-visibility: auto;
  contain-intrinsic-size: 800px;
}

/* Accessible Skip Link & Screen Reader Helpers */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--primary);
  color: #FFFFFF;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.88rem;
  z-index: 10000;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  transition: top 0.2s ease;
  text-decoration: none;
}

.skip-link:focus {
  top: 20px;
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Focus Visible Across All Interactive Elements */
:focus-visible {
  outline: 2px solid #3B82F6;
  outline-offset: 3px;
}

body {
  background-color: var(--bg-void);
  color: var(--text-high);
  line-height: 1.6;
  min-height: 100vh;
}

/* 2. Typography Hierarchy */
h1, h2, h3, h4 {
  font-family: var(--font-main);
  color: var(--text-high);
  font-weight: 700;
  line-height: 1.18;
  letter-spacing: -0.025em;
}

p {
  color: var(--text-muted);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

/* 3. Ambient Lighting & Mesh Backdrops */
.cinema-mesh-bg {
  position: relative;
  width: 100%;
  background-color: var(--bg-void);
}

.ambient-spotlight {
  position: absolute;
  top: -80px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  max-width: 100vw;
  height: 320px;
  background: radial-gradient(circle, rgba(29, 78, 216, 0.16) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* 4. Floating Glass Navigation */
.header-wrapper {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  width: 100%;
  padding: 0 16px;
  display: flex;
  justify-content: center;
  z-index: 100;
  pointer-events: none;
  transition: padding 0.25s ease;
}

@media (min-width: 769px) {
  .header-wrapper.is-scrolled .nav-bar {
    background: #0B0D14;
    border-color: var(--border-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.7);
  }
}

.nav-bar {
  pointer-events: auto;
  width: 100%;
  max-width: 1140px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 18px 10px 22px;
  background: #0E1119;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.12);
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
}

.nav-brand-logo {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.45);
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.nav-brand:hover .nav-brand-logo {
  transform: scale(1.05);
}

.nav-brand-logo-horizontal {
  height: 34px;
  width: auto;
  max-width: 190px;
  object-fit: contain;
  display: block;
  transition: transform 0.25s ease;
}

.nav-brand:hover .nav-brand-logo-horizontal {
  transform: scale(1.03);
}

.brand-name {
  font-family: var(--font-main);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  line-height: 1;
  transition: opacity 0.2s ease;
}

.nav-brand:hover .brand-name {
  opacity: 0.9;
}

.brand-name-gold {
  background: linear-gradient(135deg, #FFDE6A 0%, #FABC36 45%, #E5901A 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  font-weight: 800;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

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

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

.btn-nav-telegram {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-high);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: var(--transition-smooth);
}

.btn-nav-telegram svg {
  width: 15px;
  height: 15px;
  color: var(--telegram);
}

.btn-nav-telegram:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: rgba(41, 169, 235, 0.4);
  color: #FFFFFF;
}

.btn-nav-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  background: var(--primary);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), 0 4px 18px var(--primary-glow);
  transition: var(--transition-smooth);
}

.btn-nav-download svg {
  width: 15px;
  height: 15px;
}

.btn-nav-download:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3), 0 6px 24px rgba(29, 78, 216, 0.5);
}

/* Mobile Menu Toggle Button (Hamburger) */
.btn-mobile-menu-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  padding: 9px;
  cursor: pointer;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
  transition: var(--transition-smooth);
  color: var(--text-high);
  flex-shrink: 0;
}

.btn-mobile-menu-toggle:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--border-hover);
  color: #FFFFFF;
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background-color: currentColor;
  border-radius: 2px;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}

.btn-mobile-menu-toggle.is-active .line-1 {
  transform: translateY(6px) rotate(45deg);
}

.btn-mobile-menu-toggle.is-active .line-2 {
  opacity: 0;
}

.btn-mobile-menu-toggle.is-active .line-3 {
  transform: translateY(-6px) rotate(-45deg);
}

/* Mobile Navigation Drawer / Dropdown */
.mobile-nav-drawer {
  display: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 16px;
  right: 16px;
  max-width: 520px;
  margin: 0 auto;
  background: #0E1119;
  border: 1px solid var(--border-hover);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  padding: 14px 16px;
  opacity: 0;
  transform: translateY(-10px) scale(0.98);
  pointer-events: none;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 1000;
}

.mobile-nav-drawer.open {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.mobile-nav-menu {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  color: var(--text-high);
  font-size: 0.92rem;
  font-weight: 600;
  transition: var(--transition-smooth);
  text-decoration: none;
}

.mobile-nav-link svg {
  color: #60A5FA;
  flex-shrink: 0;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

.mobile-nav-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 8px 0;
}

.mobile-nav-telegram {
  color: var(--telegram);
}

.mobile-nav-telegram svg {
  color: var(--telegram);
}

.mobile-nav-meta {
  padding: 8px 14px 2px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
  text-align: center;
}

/* 5. Layout Container */
.section-container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* 6. Hero Section */
.hero-section {
  position: relative;
  padding-top: 135px;
  padding-bottom: 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 22px;
}

/* Announcement Pill */
.announcement-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: #151824;
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-high);
  letter-spacing: 0.04em;
}

.pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-full);
  background: var(--primary);
  box-shadow: 0 0 10px var(--primary);
  animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-headline {
  font-size: clamp(2.4rem, 4.2vw, 3.75rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.035em;
  color: #FFFFFF;
}

.gradient-headline-accent {
  display: block;
  background: linear-gradient(135deg, #93C5FD 0%, #3B82F6 45%, #1D4ED8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  line-height: 1.65;
  color: var(--text-muted);
  max-width: 580px;
}

/* Hero CTA Row */
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding-top: 4px;
}

.btn-hero-download {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  color: #FFFFFF;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  border: 1px solid rgba(255, 255, 255, 0.22);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), 0 8px 30px var(--primary-glow);
  transition: var(--transition-smooth);
}

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

.btn-badge-chip {
  padding: 3px 9px;
  border-radius: var(--radius-full);
  background: rgba(0, 0, 0, 0.35);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  letter-spacing: 0.05em;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.btn-hero-download:hover {
  background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 60%, #1E3A8A 100%);
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.35), 0 12px 38px rgba(29, 78, 216, 0.5);
}

.btn-hero-telegram {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-high);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.btn-hero-telegram svg {
  width: 18px;
  height: 18px;
  color: var(--telegram);
}

.btn-hero-telegram:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(41, 169, 235, 0.4);
  color: #FFFFFF;
  transform: translateY(-2px);
}

/* Hero Trust Row */
.hero-trust-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 14px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.trust-badge-item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 14px;
  background: #141724;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-high);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
  transition: var(--transition-smooth);
}

.trust-badge-item:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.16);
}

.trust-badge-item svg {
  flex-shrink: 0;
  color: var(--green);
}

/* Smartphone Mockup (Right Column) */
.hero-mockup-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.titanium-device-bezel {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 320px;
  padding: 8px;
  border-radius: 44px;
  background: #11141E;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.65);
}

.device-screen-frame {
  position: relative;
  border-radius: 36px;
  overflow: hidden;
  background: #000000;
  aspect-ratio: 9 / 19.5;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
}

.hero-app-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Dynamic Island Camera Notch */
.phone-dynamic-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 84px;
  height: 18px;
  background: #000000;
  border-radius: 20px;
  z-index: 10;
  box-shadow: inset 0 0 2px rgba(255, 255, 255, 0.15), 0 2px 6px rgba(0, 0, 0, 0.8);
}

.screen-glass-glare {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0) 50%);
  pointer-events: none;
}

/* 7. Performance Metrics Bar */
.metrics-section {
  padding: 30px 0 50px 0;
}

.metrics-glass-card {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 28px 36px;
  border-radius: var(--radius-xl);
  background: var(--bg-surface-glass);
  background: #0E1017;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 8px 12px;
  border-right: 1px solid var(--border-subtle);
}

.metric-item:last-child {
  border-right: none;
}

.metric-number {
  font-family: var(--font-main);
  font-size: clamp(2rem, 3vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #FFFFFF;
}

.metric-number.highlight-gold {
  color: var(--gold);
}

.metric-number.highlight-primary {
  color: #60A5FA;
}

.metric-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 8. Core Capabilities (Bento Grid) */
.section-header-center {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px auto;
}

.section-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 2.8vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 0.98rem;
  color: var(--text-muted);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.bento-card {
  position: relative;
  padding: 30px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: var(--transition-smooth);
}

.bento-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

.bento-icon-box {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition-smooth);
}

.bento-icon-box svg {
  width: 22px;
  height: 22px;
}

.bento-card:hover .bento-icon-box {
  border-color: rgba(255, 255, 255, 0.25);
}

.bento-card:nth-child(1) .bento-icon-box svg,
.bento-card:nth-child(3) .bento-icon-box svg,
.bento-card:nth-child(5) .bento-icon-box svg {
  color: var(--gold);
}

.bento-card:nth-child(2) .bento-icon-box svg,
.bento-card:nth-child(4) .bento-icon-box svg,
.bento-card:nth-child(6) .bento-icon-box svg {
  color: var(--primary);
}

.bento-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.bento-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-high);
}

.bento-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.bento-tag.tag-gold {
  background: var(--gold-subtle);
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.bento-tag.tag-primary {
  background: rgba(29, 78, 216, 0.22);
  color: #93C5FD;
  border: 1px solid rgba(29, 78, 216, 0.4);
}

.bento-tag.tag-muted {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

.bento-body {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* 9. Interactive App Screen Showcase (App Preview) */
.showcase-section {
  padding: 90px 0 80px;
  border-top: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 50% 60%, rgba(23, 107, 255, 0.12) 0%, rgba(53, 167, 255, 0.04) 50%, transparent 80%);
}

.showcase-header-center {
  text-align: center;
  max-width: 840px;
  margin: 0 auto 46px;
}

.showcase-pill-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: rgba(23, 107, 255, 0.12);
  border: 1px solid rgba(53, 167, 255, 0.35);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  color: #35A7FF;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.preview-dot-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #176BFF;
  box-shadow: 0 0 10px #176BFF;
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

.showcase-headline {
  font-family: var(--font-heading);
  font-size: clamp(2.3rem, 4.4vw, 3.6rem);
  font-weight: 900;
  letter-spacing: 0.03em;
  color: #FFFFFF;
  line-height: 1.1;
  margin: 0 0 16px;
  text-transform: uppercase;
  text-shadow: 0 4px 30px rgba(0, 0, 0, 0.8);
}

.showcase-subheadline {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 660px;
  margin: 0 auto 28px;
}

/* Filter Bar */
.showcase-filter-bar {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border-radius: var(--radius-full);
  background: rgba(14, 18, 28, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(14, 16, 23, 0.95);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.showcase-filter-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.showcase-filter-pill:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.05);
}

.showcase-filter-pill.active {
  color: #FFFFFF;
  background: rgba(23, 107, 255, 0.2);
  border-color: rgba(53, 167, 255, 0.6);
  box-shadow: 0 0 18px rgba(23, 107, 255, 0.35);
}

.showcase-filter-pill .pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.25);
  transition: all 0.2s ease;
}

.showcase-filter-pill.active .pill-dot {
  background: #35A7FF;
  box-shadow: 0 0 8px #35A7FF;
}

/* Multi-Device Mockup Grid */
.showcase-devices-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  align-items: start;
  transition: all 0.3s ease;
}

.showcase-devices-grid.view-all {
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.showcase-devices-grid.view-player {
  grid-template-columns: repeat(2, minmax(280px, 340px));
  justify-content: center;
}

/* Device Card & Frame */
.showcase-device-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.showcase-device-card.hidden-card {
  display: none !important;
}

.showcase-device-chassis {
  width: 100%;
  border-radius: 36px;
  background: #060B18;
  border: 2px solid #1E2942;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.6);
  padding: 8px 8px 10px 8px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.showcase-device-card:hover .showcase-device-chassis {
  transform: translateY(-6px);
  border-color: #35A7FF;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.8);
}

.showcase-chassis-top {
  height: 16px;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-shrink: 0;
  margin-bottom: 6px;
}

.chassis-speaker-slit {
  width: 44px;
  height: 3.5px;
  border-radius: 9999px;
  background: #1C263D;
}

.chassis-camera-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #0A0F1D;
  border: 1px solid #1E2B45;
  box-shadow: inset 0 0 2px #000;
}

.showcase-screen-viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 824 / 1784;
  background: #050A18;
  overflow: hidden;
  margin: 0;
  padding: 0;
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.showcase-screen-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.showcase-device-card:hover .showcase-screen-img {
  transform: scale(1.02);
}

.showcase-chassis-bottom {
  height: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 6px;
}

.chassis-home-bar {
  width: 60px;
  height: 4px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.35);
}

.showcase-screen-glare {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06) 0%, rgba(255, 255, 255, 0) 60%);
  pointer-events: none;
}

.showcase-zoom-badge {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: #0E111C;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
  opacity: 0;
  transition: all 0.25s ease;
  pointer-events: none;
}

.showcase-device-card:hover .showcase-zoom-badge {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.showcase-zoom-badge svg {
  width: 12px;
  height: 12px;
}

/* Captions below devices */
.showcase-device-caption {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 4px;
}

.caption-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: #E2E8F0;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

.showcase-device-card:hover .caption-title {
  color: #35A7FF;
  text-shadow: 0 0 10px rgba(53, 167, 255, 0.6);
}

.caption-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Interaction hint */
.showcase-interaction-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 40px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
}

.showcase-interaction-hint svg {
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

/* Responsive Breakpoints for Mockup Grid */
@media (max-width: 1024px) {
  .showcase-devices-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    max-width: 940px;
  }
}

@media (max-width: 768px) {
  .showcase-devices-grid {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    margin: 0 -16px;
    padding: 12px 20px 24px;
    scrollbar-width: none;
    -ms-overflow-style: none;
    -webkit-overflow-scrolling: touch;
  }
  .showcase-devices-grid::-webkit-scrollbar {
    display: none;
  }
  .showcase-device-card {
    flex: 0 0 250px;
    scroll-snap-align: center;
  }
}


/* 10. Verified Safety & Trust Section */
.security-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.security-glass-box {
  position: relative;
  border-radius: var(--radius-xl);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 44px;
  overflow: hidden;
}

.security-corner-glow {
  position: absolute;
  top: 0;
  right: 0;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(29, 78, 216, 0.15) 0%, transparent 70%);
  /* filter: blur removed for 60fps GPU performance */
  pointer-events: none;
}

.security-header {
  max-width: 640px;
  margin-bottom: 36px;
}

.security-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}

.security-card {
  padding: 24px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

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

.security-card-top svg {
  width: 24px;
  height: 24px;
}

.security-card:nth-child(1) .security-card-top svg {
  color: var(--green);
}

.security-card:nth-child(2) .security-card-top svg {
  color: var(--telegram);
}

.security-card:nth-child(3) .security-card-top svg {
  color: var(--gold);
}

.security-status-badge {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: 4px;
}

.status-green {
  background: var(--green-subtle);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.status-cyan {
  background: var(--telegram-subtle);
  color: var(--telegram);
  border: 1px solid rgba(41, 169, 235, 0.3);
}

.status-gold {
  background: var(--gold-subtle);
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.security-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-high);
}

.security-card-body {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* SHA-256 Checksum Container */
.checksum-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 24px;
  border-radius: var(--radius-md);
  background: #06070B;
  border: 1px solid var(--border-subtle);
}

.checksum-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}

.checksum-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.checksum-hash {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--gold);
  word-break: break-all;
  user-select: all;
}

.btn-copy-hash {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-high);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
}

.btn-copy-hash svg {
  width: 14px;
  height: 14px;
}

.btn-copy-hash:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--border-hover);
}

/* 11. 3-Step Sideload Installation */
.install-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step-card {
  padding: 32px;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.step-num-pill {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  font-weight: 800;
}

.step-card:nth-child(1) .step-num-pill {
  background: var(--primary);
  color: #FFFFFF;
}

.step-card:nth-child(2) .step-num-pill {
  background: var(--bg-surface-elevated);
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

.step-card:nth-child(3) .step-num-pill {
  background: var(--bg-surface-elevated);
  color: var(--green);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-high);
}

.step-body {
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text-muted);
}

/* 12. Technical Specifications Table */
.specs-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.specs-table-wrapper {
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.specs-table tr {
  border-bottom: 1px solid var(--border-subtle);
  transition: background 0.15s ease;
}

.specs-table tr:last-child {
  border-bottom: none;
}

.specs-table tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.specs-table td {
  padding: 16px 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.specs-key {
  color: var(--text-muted);
  font-weight: 500;
  width: 40%;
}

.specs-val {
  color: var(--text-high);
  font-weight: 600;
}

.specs-val.val-gold {
  color: var(--gold);
}

/* 13. Bottom Conversion Box */
.conversion-section {
  padding: 80px 0;
  border-top: 1px solid var(--border-subtle);
}

.conversion-card {
  position: relative;
  border-radius: var(--radius-xl);
  background: var(--bg-surface-elevated);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 56px 32px;
  text-align: center;
  overflow: hidden;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
}

.conversion-spotlight {
  display: none;
}

.conversion-content {
  position: relative;
  z-index: 1;
  max-width: 620px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.conversion-brand-emblem {
  display: flex;
  justify-content: center;
  margin-bottom: 6px;
}

.conversion-logo-img {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3), 0 0 30px rgba(29, 78, 216, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.conversion-title {
  font-size: clamp(1.8rem, 2.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #FFFFFF;
}

.conversion-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.conversion-btn-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding-top: 10px;
}

.conversion-meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-faint);
  margin-top: 6px;
}

/* 13.5. Frequently Asked Questions (FAQ) */
.faq-section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.faq-accordion {
  max-width: 820px;
  margin: 40px auto 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-surface-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
}

.faq-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-surface-elevated);
}

.faq-item.active {
  border-color: rgba(212, 175, 55, 0.4);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(212, 175, 55, 0.15);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  color: var(--text-high);
  font-family: var(--font-main);
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  transition: color 0.2s ease;
}

.faq-question:hover {
  color: #FFFFFF;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--gold);
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.35s ease;
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 220px;
  padding: 0 24px 20px;
}

.faq-answer p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.faq-answer code {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 7px;
  border-radius: 4px;
  color: #FFDE6A;
}

/* 14. Official Footer */
.official-footer {
  border-top: 1px solid var(--border-subtle);
  background: #06070B;
  padding: 48px 0 36px 0;
}

.footer-top-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
  margin-bottom: 28px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.footer-brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  object-fit: cover;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  flex-shrink: 0;
}

.footer-brand-logo-horizontal {
  height: 28px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  display: block;
  opacity: 0.95;
  transition: opacity 0.2s ease;
}

.footer-brand:hover .footer-brand-logo-horizontal {
  opacity: 1;
}

.footer-nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
}

.footer-link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.footer-link:hover {
  color: var(--text-high);
}

.footer-bottom-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.82rem;
  color: var(--text-faint);
}

.footer-version-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.version-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--green);
}

/* 15. Lightbox Modal */
.lightbox-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(6, 7, 11, 0.96);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.lightbox-modal.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lightbox-container {
  position: relative;
  max-width: 420px;
  max-height: 90vh;
  border-radius: 36px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  background: #000000;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8);
  transform: scale(0.92);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.lightbox-modal.active .lightbox-container {
  transform: scale(1);
}

.lightbox-img {
  width: 100%;
  height: auto;
  max-height: 90vh;
  object-fit: contain;
  display: block;
}

.btn-close-lightbox {
  position: absolute;
  top: 18px;
  right: 18px;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background: rgba(14, 16, 23, 0.85);
  border: 1px solid var(--border-subtle);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition-smooth);
}

.btn-close-lightbox:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: scale(1.08);
}

/* 16. Toast Notification */
.toast-notice {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: var(--radius-full);
  background: #141724;
  border: 1px solid var(--border-subtle);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  pointer-events: none;
}

.toast-notice.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* 17. Responsive Media Queries */
.mobile-only-text {
  display: none;
}

@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }

  .btn-mobile-menu-toggle {
    display: flex;
  }

  .mobile-nav-drawer {
    display: block;
  }

  .nav-actions {
    gap: 8px;
  }

  .hero-section {
    padding-top: 110px;
    padding-bottom: 50px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-content {
    align-items: center;
  }

  .hero-cta-row {
    justify-content: center;
  }

  .hero-trust-row {
    justify-content: center;
  }

  .titanium-device-bezel {
    max-width: 280px;
    margin: 0 auto;
  }

  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .showcase-layout {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .showcase-info {
    align-items: center;
  }

  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}

@media (max-width: 768px) {
  .desktop-only-text {
    display: none !important;
  }

  .mobile-only-text {
    display: inline !important;
  }

  .header-wrapper {
    top: 0;
    left: 0;
    right: 0;
    padding: 0;
    background: #090A0F;
    border-bottom: 1px solid var(--border-subtle);
  }

  .mobile-nav-drawer {
    top: 100%;
    left: 0;
    right: 0;
    max-width: 100%;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border-top: none;
    border-left: none;
    border-right: none;
    background: #0E1119;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.85);
  }

  .nav-bar {
    padding: 10px 14px;
    padding-top: max(10px, env(safe-area-inset-top, 10px));
    width: 100%;
    max-width: 100%;
    border-radius: 0;
    border: none;
    background: transparent;
    box-shadow: none;
  }

  .nav-brand {
    flex-shrink: 0;
    gap: 8px;
  }

  .nav-brand-logo {
    width: 26px;
    height: 26px;
    border-radius: 7px;
  }

  .nav-brand-logo-horizontal {
    height: 28px;
    max-width: 140px;
  }

  .brand-name {
    font-size: 1.12rem;
  }

  .nav-links {
    display: none;
  }

  .nav-actions {
    gap: 6px;
    flex-shrink: 0;
  }

  .btn-nav-telegram span {
    display: none;
  }

  .btn-nav-telegram {
    padding: 6px 9px;
    flex-shrink: 0;
  }

  .btn-nav-download {
    padding: 6px 12px;
    font-size: 0.74rem;
    font-weight: 700;
    gap: 5px;
    flex-shrink: 0;
  }

  .hero-section {
    padding-top: 85px;
    padding-bottom: 36px;
  }

  .hero-grid {
    gap: 30px;
  }

  .hero-content {
    align-items: center;
    text-align: center;
  }

  .announcement-pill {
    font-size: 0.72rem;
    padding: 5px 13px;
    max-width: 95%;
    text-align: center;
  }

  .hero-headline {
    font-size: clamp(1.85rem, 6.8vw, 2.35rem);
    text-align: center;
    line-height: 1.2;
  }

  .hero-description {
    font-size: 0.92rem;
    line-height: 1.55;
    text-align: center;
    max-width: 480px;
  }

  .hero-cta-row {
    justify-content: center;
    gap: 12px;
    width: 100%;
    max-width: 400px;
  }

  .hero-trust-row {
    justify-content: center;
    gap: 8px 10px;
    width: 100%;
  }

  .trust-badge-item {
    font-size: 0.72rem;
    padding: 5px 11px;
  }

  .hero-mockup-wrapper {
    margin-top: 6px;
  }

  .titanium-device-bezel {
    max-width: 250px;
    border-radius: 36px;
    padding: 6px;
    margin: 0 auto;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.6);
  }

  .device-screen-frame {
    border-radius: 30px;
  }

  .phone-dynamic-notch {
    width: 68px;
    height: 15px;
    top: 7px;
  }

  .metrics-section {
    padding: 20px 0 40px 0;
  }

  .metrics-glass-card {
    grid-template-columns: repeat(2, 1fr);
    padding: 16px 10px;
    gap: 0;
    border-radius: var(--radius-lg);
  }

  .metric-item {
    padding: 12px 6px;
    border-right: none;
  }

  .metric-item:nth-child(odd) {
    border-right: 1px solid var(--border-subtle);
  }

  .metric-item:nth-child(-n+2) {
    border-bottom: 1px solid var(--border-subtle);
  }

  .metric-number {
    font-size: 1.65rem;
  }

  .metric-label {
    font-size: 0.62rem;
    letter-spacing: 0.04em;
  }

  .features-section {
    padding: 40px 0;
  }

  .bento-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .bento-card {
    padding: 20px 18px;
    border-radius: var(--radius-md);
  }

  .bento-icon-box {
    margin-bottom: 12px;
    width: 40px;
    height: 40px;
  }

  .bento-title {
    font-size: 1.05rem;
  }

  .bento-body {
    font-size: 0.85rem;
    line-height: 1.55;
  }

  .showcase-section {
    padding: 40px 0;
  }

  .showcase-header-center {
    margin-bottom: 24px;
  }

  .showcase-headline {
    font-size: clamp(1.6rem, 5.5vw, 1.95rem);
  }

  .showcase-subheadline {
    font-size: 0.88rem;
  }

  .install-section {
    padding: 40px 0;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .step-card {
    padding: 20px 18px;
    border-radius: var(--radius-md);
  }

  .step-title {
    font-size: 1.05rem;
  }

  .step-body {
    font-size: 0.86rem;
    line-height: 1.55;
  }

  .tv-sideload-box {
    margin-top: 20px;
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }

  .tv-sideload-header {
    font-size: 0.92rem;
  }

  .tv-sideload-desc {
    font-size: 0.82rem;
    line-height: 1.5;
  }

  .tv-sideload-box .downloader-code-box {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(0, 0, 0, 0.65);
    border: 1px solid rgba(212, 175, 55, 0.45);
    border-radius: 12px;
    margin-top: 12px;
    width: 100%;
    box-sizing: border-box;
  }

  .tv-sideload-box .downloader-code-text {
    font-size: 0.92rem;
    line-height: 1.2;
    text-align: left;
    color: #FFDE6A;
    font-weight: 700;
    display: inline-block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .tv-sideload-box .btn-mini-copy {
    width: auto;
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 0.8rem;
    background: rgba(212, 175, 55, 0.2);
    border-color: rgba(212, 175, 55, 0.5);
  }

  .tv-sideload-subnote {
    margin-top: 10px;
    font-size: 0.76rem;
    color: var(--text-muted);
    text-align: center;
    word-break: break-all;
  }

  .tv-direct-link {
    color: var(--text-muted);
    text-decoration: underline;
    opacity: 0.85;
  }

  .tv-direct-link:hover {
    color: var(--gold);
    opacity: 1;
  }

  @media (max-width: 360px) {
    .tv-sideload-box .downloader-code-box {
      flex-direction: column;
      align-items: stretch;
      text-align: center;
    }
    .tv-sideload-box .downloader-code-text {
      text-align: center;
    }
    .tv-sideload-box .btn-mini-copy {
      width: 100%;
      justify-content: center;
    }
  }

  .faq-section {
    padding: 40px 0;
  }

  .faq-question {
    padding: 15px 16px;
    font-size: 0.94rem;
  }

  .faq-answer {
    padding: 0 16px;
  }

  .faq-item.active .faq-answer {
    padding: 0 16px 16px;
  }

  .faq-answer p {
    font-size: 0.86rem;
    line-height: 1.6;
  }

  .faq-answer code {
    word-break: break-all;
  }

  .conversion-section {
    padding: 40px 0;
  }

  .conversion-card {
    padding: 32px 18px;
    border-radius: var(--radius-lg);
  }

  .conversion-brand-emblem {
    width: 52px;
    height: 52px;
    margin-bottom: 14px;
  }

  .conversion-title {
    font-size: 1.65rem;
  }

  .conversion-sub {
    font-size: 0.88rem;
  }

  .conversion-btn-row .btn-hero-download,
  .conversion-btn-row .btn-hero-telegram {
    width: 100%;
    max-width: 340px;
    justify-content: center;
  }

  .footer-top-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    padding-bottom: 20px;
    margin-bottom: 20px;
  }

  .footer-nav-links {
    gap: 14px 18px;
  }

  .footer-bottom-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .section-container {
    padding: 0 14px;
  }

  .hero-headline {
    font-size: clamp(1.75rem, 6.5vw, 2.05rem);
  }

  .btn-hero-download,
  .btn-hero-telegram {
    width: 100%;
    justify-content: center;
  }

  .modal-content-card {
    padding: 22px 16px;
    border-radius: var(--radius-lg);
  }

  .modal-title {
    font-size: 1.25rem;
  }

  .modal-sub {
    font-size: 0.82rem;
  }

  .modal-reassurance-box {
    padding: 12px;
  }

  .modal-step-item {
    padding: 10px 12px;
    font-size: 0.82rem;
  }

  .btn-modal-action {
    padding: 12px 16px;
    font-size: 0.88rem;
  }
}

@media (max-width: 380px) {
  .nav-brand-logo-horizontal {
    height: 24px;
    max-width: 115px;
  }

  .btn-nav-download span {
    display: none;
  }

  .btn-nav-download {
    padding: 6px 10px;
  }

  .hero-headline {
    font-size: 1.65rem;
  }

  .trust-badge-item {
    font-size: 0.68rem;
    padding: 4px 8px;
  }

  .metric-number {
    font-size: 1.45rem;
  }

  .metric-label {
    font-size: 0.58rem;
  }
}

/* ==========================================================================
   CineVault v2.7.0 — Interactive Features, Modals & UX Enhancements
   ========================================================================== */

/* 1. Hero Specs Pill */
.hero-specs-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-spec-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 500;
}

.hero-spec-chip.chip-gold {
  background: var(--gold-subtle);
  border-color: rgba(212, 175, 55, 0.25);
  color: #F6D878;
}

.hero-spec-chip.chip-clean {
  background: var(--green-subtle);
  border-color: rgba(34, 197, 94, 0.25);
  color: #4ADE80;
}

/* Showcase Dots on Mobile */
.showcase-dots {
  display: none;
}

@media (max-width: 768px) {
  .showcase-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 16px 0 8px;
  }

  .showcase-dot {
    position: relative;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.25);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all 0.25s ease;
  }

  /* 44x44px accessible touch target */
  .showcase-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 44px;
    height: 44px;
  }

  .showcase-dot.active {
    width: 26px;
    border-radius: var(--radius-full);
    background: #3B82F6;
    box-shadow: 0 0 12px rgba(59, 130, 246, 0.6);
  }
}

.showcase-device-card:focus-visible {
  outline: 2px solid #3B82F6;
  outline-offset: 6px;
  border-radius: 40px;
}

.section-features {
  padding-top: 60px;
  padding-bottom: 70px;
}

@media (max-width: 768px) {
  .section-features {
    padding-top: 40px;
    padding-bottom: 48px;
  }
}

/* Reduced Motion Accessibility */
@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;
  }
}

/* Clean Security Transparency Card */
.security-transparency-card {
  margin-top: 24px;
  padding: 18px 22px;
  background: rgba(14, 23, 43, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  text-align: left;
}

.transparency-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #35A7FF;
  font-weight: 700;
  font-size: 0.88rem;
  margin-bottom: 6px;
}

.transparency-note {
  font-size: 0.85rem;
  color: var(--text-muted, #8D9AB5);
  line-height: 1.55;
  margin: 0;
}

.transparency-note code {
  background: rgba(255, 255, 255, 0.08);
  padding: 2px 6px;
  border-radius: 4px;
  color: #FABC36;
  font-size: 0.82rem;
}