/* ==========================================================================
   RECOIL OPTIMIZER — MASTER LUXURY GLASSMORPHISM & SWISS TECHNICAL HUD CSS
   Architecture: Unified Recoil Signature Palette | Zero-Overflow Responsive
   Typography: Plus Jakarta Sans (Display/Prose) + JetBrains Mono (HUD) + JetBrains Mono
   ========================================================================== */

:root {
  /* Modern Browser UI Theming & Native Controls (Baseline 2024) */
  color-scheme: dark;
  accent-color: var(--primary);

  /* Core Surface Palette — Recoil Signature Obsidian & Carbon */
  --bg-deep: #08090d;
  --bg-surface: #0e1117;
  --bg-inset: #0a0c10;
  --bg-card: rgba(15, 17, 23, 0.82);
  --bg-card-hover: rgba(22, 25, 34, 0.92);
  --bg-glass: rgba(15, 17, 23, 0.86);

  /* Primary Solar Amber Tokens (10.8:1 WCAG AAA Contrast on Primary Buttons) */
  --primary: #f59e0b;
  --primary-hover: #fbbf24;
  --primary-contrast: #07080c;
  --primary-glow: rgba(245, 158, 11, 0.28);
  --primary-soft: rgba(245, 158, 11, 0.12);

  /* Secondary Semantic & Tactical Accents */
  --accent-amber: #fbbf24;
  --accent-amber-glow: rgba(251, 191, 36, 0.24);
  --accent-emerald: #10b981;
  --accent-emerald-glow: rgba(16, 185, 129, 0.24);
  --accent-cobalt: #3b82f6;
  --accent-cobalt-bright: #60a5fa;
  --accent-cobalt-glow: rgba(59, 130, 246, 0.24);
  --accent-rose: #f43f5e;
  --accent-rose-glow: rgba(244, 63, 94, 0.24);

  /* Structural & Luminous Borders */
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(245, 158, 11, 0.36);

  /* Typography Hierarchy */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Precision Font Stacks */
  --font-sans: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display: 'Plus Jakarta Sans', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-hud: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  --font-mono: 'JetBrains Mono', Consolas, monospace;

  /* Geometric Radii */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* Motion, Elevation & Canvas Channels */
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-elevation: 0 24px 48px -12px rgba(0, 0, 0, 0.72);
  --shadow-hud: 0 4px 12px rgba(0, 0, 0, 0.45);
  --skin-particle-rgb: 245, 158, 11;
  --skin-accent-rgb: 59, 130, 246;
}

/* ==========================================================================
   1. RESET, CUSTOM SCROLLBAR & GLOBAL BASELINE
   ========================================================================== */

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

* {
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--bg-deep);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-deep);
  border-left: 1px solid var(--border-subtle);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-hover) 0%, var(--primary) 100%);
  border-radius: 9999px;
  border: 2px solid var(--bg-deep);
  box-shadow: none;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-hover);
}

::selection {
  background: var(--primary);
  color: var(--primary-contrast);
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-deep);
  color: var(--text-main);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-main);
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
  position: relative;
  min-height: 100vh;
}

img, svg, canvas, video {
  max-width: 100%;
  display: block;
}

/* ==========================================================================
   2. AMBIENT CYBERNETIC BACKDROPS & TECHNICAL GRID
   ========================================================================== */







.container {
  width: 100%;
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   3. TYPOGRAPHY PRECISION & HUD READOUTS
   ========================================================================== */

h1, h2, h3, h4,
.hero-title,
.section-title,
.feature-title,
.display-heading {
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  color: var(--text-main);
  overflow-wrap: break-word;
  word-break: break-word;
  text-wrap: balance;
}

/* Modern Typographic Quality (Baseline 2024 // Prevents Runts & Orphaned Words) */
p,
.hero-subtitle,
.section-desc,
.os-matrix-desc,
.sec-card-desc,
.faq-answer {
  text-wrap: pretty;
}

.hero-stat-value,
.mock-stat-value,
.nav-brand-title,
.qs-step-num,
.telemetry-counter-val {
  font-family: var(--font-hud);
  font-variant-numeric: tabular-nums;
}

.gradient-text {
  background: linear-gradient(135deg, #ffffff 20%, var(--primary-hover) 65%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-amber {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-amber) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-text-primary {
  background: linear-gradient(135deg, #ffffff 15%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.mono-readout {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   4. 100% SINGLE-LINE STICKY NAVBAR (.site-header, .navbar)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 10px;
  z-index: 1000;
  max-width: 1040px;
  margin: 0 auto 12px auto;
  padding: 0 16px;
  width: 100%;
}

.navbar {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: nowrap;
  padding: 10px 18px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--border-subtle);
  box-shadow:
    0 16px 36px -8px rgba(0, 0, 0, 0.6),
    
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  z-index: 1000;
  transition: var(--transition);
}

.navbar:hover {
  border-color: var(--border-glow);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
  white-space: nowrap;
}

.nav-logo {
  height: 32px;
  width: auto;
  filter: none;
  transition: var(--transition);
  flex-shrink: 0;
}

.nav-brand:hover .nav-logo {
  transform: scale(1.06) rotate(-3deg);
}

.nav-brand-title {
  font-family: var(--font-hud);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.nav-brand-title span,
.nav-brand-accent {
  color: var(--primary);
  text-shadow: none;
  transition: var(--transition);
}

.nav-version-badge {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--primary-soft);
  color: var(--primary-hover);
  border: 1px solid var(--border-glow);
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.3vw, 20px);
  flex-wrap: nowrap;
  white-space: nowrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li {
  flex-shrink: 0;
}

.nav-links a {
  white-space: nowrap;
  font-size: clamp(0.79rem, 0.88vw, 0.86rem);
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  letter-spacing: 0.005em;
  padding: 6px 2px;
  position: relative;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0%;
  height: 2px;
  background: var(--primary);
  box-shadow: none;
  transition: width 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: 99px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-main);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  flex-wrap: nowrap;
}

.nav-discord-contact {
  background: rgba(88, 101, 242, 0.12);
  border: 1px solid rgba(88, 101, 242, 0.38);
  color: #8ea1e1;
  min-height: 38px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.nav-discord-contact svg {
  color: #5865F2;
  transition: transform 0.2s ease;
}

.nav-discord-contact:hover {
  background: rgba(88, 101, 242, 0.22);
  border-color: #5865F2;
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(88, 101, 242, 0.25);
}

.nav-discord-contact:hover svg {
  transform: scale(1.1);
  color: #7983f5;
}

.lang-toggle,
.nav-github-link {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  min-height: 38px;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}

.lang-toggle:hover,
.nav-github-link:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-glow);
  box-shadow: none;
  transform: translateY(-1px);
}

.btn-nav-download {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 55%, #d97706 100%);
  color: var(--primary-contrast);
  min-height: 38px;
  padding: 7px 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 0.83rem;
  font-weight: 800;
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  border: 1px solid rgba(251, 191, 36, 0.5);
  white-space: nowrap;
  flex-shrink: 0;
}

.btn-nav-download svg {
  color: var(--primary-contrast);
  stroke: currentColor;
  flex-shrink: 0;
}

.btn-nav-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
  filter: brightness(1.06);
}

/* Mobile Hamburger Button & Drawer (Hidden on Desktop >= 1080px) */
.nav-hamburger {
  display: none;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  padding: 0;
}

.nav-hamburger:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-glow);
  color: var(--primary-hover);
}

.mobile-nav-drawer {
  display: none;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
  padding: 16px 18px;
  background: rgba(15, 17, 23, 0.96);
  backdrop-filter: blur(22px) saturate(180%);
  -webkit-backdrop-filter: blur(22px) saturate(180%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.78);
}

.mobile-nav-drawer.open,
.mobile-nav-drawer.active,
.mobile-nav-drawer.is-open,
.mobile-nav-drawer[aria-hidden="false"] {
  display: flex;
}

.mobile-nav-drawer ul,
.mobile-nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
}

.mobile-nav-drawer a,
.mobile-nav-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: var(--radius-xs);
  color: var(--text-main);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  transition: var(--transition);
}

.mobile-nav-drawer a:hover,
.mobile-nav-links a:hover {
  background: var(--primary-soft);
  color: var(--primary-hover);
}

/* Mid-Desktop Single-Line Safeguard (1080px - 1240px) */
@media (min-width: 1080px) and (max-width: 1240px) {
  .nav-version-badge,
  .nav-github-text {
    display: none !important;
  }
}

/* Compact Tablet / Mobile Navbar Breakpoint (<= 1079px) */
@media (max-width: 1079px) {
  .nav-links {
    display: none !important;
  }

  .nav-hamburger {
    display: inline-flex !important;
  }
}

/* ==========================================================================
   5. HIGH-CONTRAST TACTICAL BUTTONS & HUD BADGES
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 46px;
  padding: 12px 26px;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.005em;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  user-select: none;
}

.btn-primary {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 55%, #d97706 100%);
  color: var(--primary-contrast);
  font-weight: 800;
  border-color: rgba(251, 191, 36, 0.55);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.45),
    
    inset 0 1px 0 rgba(255, 255, 255, 0.38);
}

.btn-primary svg {
  color: var(--primary-contrast);
  stroke: currentColor;
  flex-shrink: 0;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.45),
    
    inset 0 1px 0 rgba(255, 255, 255, 0.48);
  filter: brightness(1.06);
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  font-weight: 700;
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-glow);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}

/* HUD Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: 9999px;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  line-height: 1.2;
}

.badge-pulse {
  background: var(--primary-soft);
  border: 1px solid var(--border-glow);
  color: var(--primary-hover);
  box-shadow:  inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: var(--primary);
  border-radius: 50%;
  box-shadow: none;
  animation: pulse-ring 2s infinite;
  flex-shrink: 0;
}

@keyframes pulse-ring {
  0% { transform: scale(0.92); opacity: 0.8; box-shadow: none; }
  50% { transform: scale(1.28); opacity: 1; box-shadow: none; }
  100% { transform: scale(0.92); opacity: 0.8; box-shadow: none; }
}

.badge-success {
  background: rgba(16, 185, 129, 0.14);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.35);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-weight: 700;
  flex-shrink: 0;
}

.badge-warning {
  background: rgba(245, 158, 11, 0.14);
  color: var(--accent-amber);
  border: 1px solid rgba(245, 158, 11, 0.35);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-weight: 700;
  flex-shrink: 0;
}

/* ==========================================================================
   6. ABOVE-THE-FOLD HERO, MICRO-GUARANTEES, UNIFIED OS+PIN BAR & 5-STAT STRIP
   ========================================================================== */

.hero {
  padding: 20px 0 34px 0;
  text-align: center;
  position: relative;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: clamp(1.85rem, 3.2vw, 2.25rem);
  font-weight: 800;
  margin: 12px auto 10px auto;
  max-width: 820px;
  letter-spacing: -0.03em;
  line-height: 1.14;
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    #fef3c7 58%,
    var(--primary) 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  overflow-wrap: break-word;
  word-break: break-word;
  text-wrap: balance;
  filter: drop-shadow(0 8px 28px rgba(0, 0, 0, 0.45));
}

.hero-subtitle {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 18px auto;
  line-height: 1.55;
  overflow-wrap: break-word;
  word-break: break-word;
  text-wrap: balance;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.btn-hero-download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 55%, #d97706 100%);
  color: var(--primary-contrast);
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 0.92rem;
  text-decoration: none;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45),  inset 0 1px 0 rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(251, 191, 36, 0.55);
  transition: var(--transition);
  cursor: pointer;
}

.btn-hero-download:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
  filter: brightness(1.07);
}

.hero-arch-badge {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 999px;
  background: rgba(7, 8, 12, 0.28);
  color: var(--primary-contrast);
  border: 1px solid rgba(7, 8, 12, 0.2);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 0.88rem;
  text-decoration: none;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.btn-hero-secondary:hover {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-glow);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transform: translateY(-2px);
}

.hero-pin-note {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 5px 14px;
  margin: 0 auto 18px auto;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-muted);
}

.hero-pin-note strong {
  color: var(--accent-amber);
  font-family: var(--font-hud);
  letter-spacing: 0.08em;
}

.btn-copy-pin-mini {
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.4);
  color: var(--accent-amber);
  padding: 3px 9px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-copy-pin-mini:hover {
  background: var(--primary);
  color: var(--primary-contrast);
}

/* Google-Grade Engineering Security Pillars */
.security-grid-google {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  width: 100%;
  margin-top: 24px;
}

@media (max-width: 1024px) {
  .security-grid-google {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

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

.sec-card-google {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-top: 2px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  backdrop-filter: blur(16px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.sec-card-google:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
}

.sec-card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  border: 1px solid var(--border-glow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 14px;
}

.sec-card-title {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.sec-card-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* 4-Column Hero Executive Telemetry Strip (.hero-stats-strip & .executive-telemetry-strip) */
.hero-stats-strip,
.executive-telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  width: 100%;
  max-width: 860px;
  margin: 14px auto 18px auto;
  text-align: center;
}

.hero-stats-strip > *,
.hero-stat-card,
.hero-stat-item,
.telemetry-counter-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-top: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  padding: 10px 8px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    0 12px 28px -8px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.hero-stats-strip > *::before,
.hero-stat-card::before,
.hero-stat-item::before,
.telemetry-counter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: radial-gradient(ellipse at top, var(--primary-glow) 0%, transparent 75%);
  pointer-events: none;
  opacity: 0.65;
  transition: opacity 0.3s ease;
}

.hero-stats-strip > *:hover,
.hero-stat-card:hover,
.hero-stat-item:hover,
.telemetry-counter-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glow);
  border-top-color: var(--primary-hover);
  box-shadow:
    0 18px 36px -8px rgba(0, 0, 0, 0.65),
    ;
}

.hero-stat-value,
.telemetry-counter-val {
  font-family: var(--font-hud);
  font-variant-numeric: tabular-nums;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.hero-stat-label,
.telemetry-counter-label {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  line-height: 1.3;
}

.hero-stat-sub {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--text-dim);
  letter-spacing: 0.03em;
}

/* ==========================================================================
   7. AUTHENTIC WINDOWS 11 / WPF APP WINDOW (.app-window) & OSCILLOSCOPE
   ========================================================================== */

.hero-mockup-wrapper {
  max-width: 860px;
  margin: 18px auto 0 auto;
  width: 100%;
  perspective: 1200px;
}

.app-window {
  background: linear-gradient(180deg, var(--bg-surface) 0%, var(--bg-deep) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  box-shadow:
    0 28px 60px -14px rgba(0, 0, 0, 0.85),
    
    0 0 0 1px rgba(255, 255, 255, 0.06),
    inset 0 1px 0 rgba(255, 255, 255, 0.12);
  overflow: hidden;
  text-align: left;
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.45s ease, border-color 0.35s ease;
  max-width: 100%;
  width: 100%;
  position: relative;
}

.app-window::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0.85;
  z-index: 2;
}

/* Authentic Windows 11 / WPF Titlebar (36px Native Height) */
.window-titlebar {
  background: var(--bg-inset);
  border-bottom: 1px solid var(--border-subtle);
  height: 36px;
  min-height: 36px;
  padding: 0 0 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  overflow: hidden;
  user-select: none;
}

.wpf-titlebar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  padding: 0;
  height: 100%;
}

.wpf-app-emblem {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: var(--primary-soft);
  border: 1px solid var(--border-glow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
  overflow: hidden;
}

.wpf-app-emblem img,
.wpf-app-emblem svg {
  width: 12px;
  height: 12px;
  object-fit: contain;
}

.wpf-title-stack {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex-wrap: nowrap;
}

.window-title,
.wpf-window-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-main);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.wpf-admin-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 6px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.60rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  background: rgba(245, 158, 11, 0.12);
  color: var(--primary-hover);
  border: 1px solid var(--border-glow);
  flex-shrink: 0;
}

.wpf-titlebar-right {
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex-shrink: 0;
  height: 100%;
}

.wpf-header-telemetry {
  display: flex;
  align-items: center;
  gap: 6px;
}

.wpf-telemetry-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}

.wpf-telemetry-pill strong,
.wpf-telemetry-pill .telemetry-val {
  color: var(--accent-emerald);
  font-weight: 700;
}

.win-caption-controls {
  display: inline-flex;
  align-items: stretch;
  height: 36px;
}

.win-caption-btn {
  width: 38px;
  height: 36px;
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.win-caption-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.win-btn-close:hover {
  background: #e81123 !important;
  color: #fff !important;
}

.window-content {
  padding: 10px 12px;
  display: grid;
  grid-template-columns: 180px minmax(0, 1fr);
  gap: 14px;
}

/* Mockup Sidebar (180px Compact) */
.mock-sidebar {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.mock-menu-item {
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  transition: var(--transition);
  border-left: 2px solid transparent;
  user-select: none;
}

.mock-menu-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
}

.mock-menu-item.active {
  background: linear-gradient(90deg, var(--primary-soft) 0%, rgba(255, 255, 255, 0.02) 100%);
  color: var(--primary-hover);
  border-left: 2px solid var(--primary);
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}

.mock-menu-item.active svg {
  color: var(--primary);
  filter: none;
}

.mock-menu-item svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* Mockup Panes */
.mock-panes-wrapper {
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

.mock-pane {
  display: none;
  animation: fadeInPane 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  min-width: 0;
}

.mock-pane.active {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

@keyframes fadeInPane {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.mock-stat-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.mock-stat-card {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-top: 2px solid var(--border-glow);
  border-radius: var(--radius-xs);
  padding: 8px 12px;
  transition: var(--transition);
}

.mock-stat-card:hover {
  border-color: var(--border-glow);
  background: rgba(255, 255, 255, 0.04);
}

.mock-stat-title {
  font-size: 0.70rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.mock-stat-value {
  font-family: var(--font-hud);
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-top: 2px;
  line-height: 1.15;
}

.mock-stat-card:first-child .mock-stat-value {
  color: var(--primary);
  text-shadow: none;
}

/* Compact Oscilloscope Canvas Wrapper & Stress Button */
.dpc-oscilloscope-box,
.oscilloscope-box {
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    rgba(7, 8, 12, 0.88);
  background-size: 16px 16px, 16px 16px, 100% 100%;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 6px 10px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.75);
}

.oscilloscope-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
  flex-wrap: wrap;
}

.oscilloscope-title {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.oscilloscope-readout {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  color: var(--accent-emerald);
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.28);
  padding: 1px 6px;
  border-radius: 4px;
}

.btn-osc-stress {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(244, 63, 94, 0.12);
  border: 1px solid rgba(244, 63, 94, 0.36);
  color: #fda4af;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-osc-stress:hover,
.btn-osc-stress.active {
  background: var(--accent-rose);
  color: #ffffff;
  border-color: var(--accent-rose);
  box-shadow: 0 0 14px var(--accent-rose-glow);
}

.dpc-oscilloscope-box canvas,
.oscilloscope-box canvas,
.oscilloscope-canvas,
#dpc-oscilloscope-canvas {
  width: 100%;
  height: 105px !important;
  max-height: 105px !important;
  display: block;
  border-radius: 4px;
}

/* Compact Mockup Cards & Rows */
.mock-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  gap: 10px;
  flex-wrap: wrap;
}

.mock-hardware-summary {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(0, 0, 0, 0.32);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 10px 12px;
}

.hw-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.76rem;
  gap: 10px;
  flex-wrap: wrap;
}

.hw-label {
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.70rem;
  font-weight: 700;
}

.hw-val {
  color: var(--text-main);
  font-weight: 600;
  text-align: right;
}

.mock-tune-cta {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 10px 12px;
}

.mock-tweak-list {
  background: rgba(0, 0, 0, 0.28);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.mock-tweak-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.022);
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  gap: 10px;
  transition: var(--transition);
}

.mock-tweak-row:hover {
  background: rgba(255, 255, 255, 0.045);
  border-color: var(--border-subtle);
}

.mock-tweak-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.mock-tweak-name {
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--text-main);
  overflow-wrap: break-word;
}

.mock-tweak-sub {
  font-size: 0.68rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  overflow-wrap: break-word;
}

/* Scaled Micro-Toggle Switch */
.toggle-switch {
  width: 32px;
  height: 18px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid var(--border-subtle);
  border-radius: 9999px;
  position: relative;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.toggle-switch.active {
  background: var(--primary);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: none;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 1px;
  left: 1px;
  width: 14px;
  height: 14px;
  background: #ffffff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.35);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.toggle-switch.active::after {
  transform: translateX(14px);
}

/* AutoDriver Styles */
.mock-driver-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mock-driver-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  background: rgba(255, 255, 255, 0.022);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  gap: 10px;
  transition: var(--transition);
}

.mock-driver-card:hover {
  border-color: var(--border-glow);
}

.mock-driver-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 1;
}

.mock-driver-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.mock-driver-name {
  font-size: 0.80rem;
  font-weight: 600;
  color: var(--text-main);
}

.mock-driver-meta {
  font-size: 0.67rem;
  color: var(--text-dim);
  font-family: var(--font-mono);
  margin-top: 1px;
}

.btn-clean-mini {
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.38);
  color: #fda4af;
  font-size: 0.70rem;
  font-family: var(--font-mono);
  font-weight: 700;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}

.btn-clean-mini:hover {
  background: var(--accent-rose);
  color: #ffffff;
  box-shadow: 0 0 14px var(--accent-rose-glow);
}

.mock-autodriver-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
  flex-wrap: wrap;
}

/* Security Grid inside Mockup */
.mock-security-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.sec-status-box {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  padding: 10px;
}

.sec-status-title {
  font-size: 0.67rem;
  font-family: var(--font-mono);
  color: var(--text-dim);
}

.sec-status-val {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  font-weight: 800;
  margin: 4px 0 2px 0;
}

.sec-status-sub {
  font-size: 0.67rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Authentic WPF Bottom Status Bar (.window-statusbar) */
.window-statusbar {
  background: var(--bg-inset);
  border-top: 1px solid var(--border-subtle);
  padding: 4px 12px;
  height: 24px;
  min-height: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.70rem;
  color: var(--text-dim);
}

.statusbar-left,
.statusbar-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.statusbar-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.statusbar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 6px var(--accent-emerald);
}

/* ==========================================================================
   8. GLOBAL SECTIONS & HEADERS (COMPACT Ocular Ergonomics)
   ========================================================================== */

.section {
  padding: 38px 0;
  position: relative;
  width: 100%;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 20px auto;
  width: 100%;
}

.section-tag {
  display: inline-block;
  color: var(--primary-hover);
  font-family: var(--font-mono);
  font-size: 0.70rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
  padding: 3px 12px;
  background: var(--primary-soft);
  border: 1px solid var(--border-glow);
  border-radius: 9999px;
  box-shadow: none;
}

.section-title {
  font-family: var(--font-sans);
  font-size: clamp(1.6rem, 2.5vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.18;
  margin-bottom: 10px;
  overflow-wrap: break-word;
  word-break: break-word;
}

.section-desc {
  font-size: 0.93rem;
  color: var(--text-muted);
  overflow-wrap: break-word;
  word-break: break-word;
  line-height: 1.55;
  max-width: 620px;
  margin: 0 auto;
}

/* ==========================================================================
   10. FEATURES BENTO GRID
   ========================================================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 22px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  transition: var(--transition);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
}

.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-elevation);
}

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

.feature-icon-wrapper {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  border: 1px solid var(--border-subtle);
}

.icon-blue {
  background: rgba(59, 130, 246, 0.14);
  color: var(--accent-cobalt-bright);
  border-color: rgba(59, 130, 246, 0.32);
  box-shadow: 0 0 18px var(--accent-cobalt-glow);
}

.icon-amber {
  background: var(--primary-soft);
  color: var(--accent-amber);
  border-color: var(--border-glow);
  box-shadow: none;
}

.icon-emerald {
  background: rgba(16, 185, 129, 0.14);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.3);
  box-shadow: 0 0 18px var(--accent-emerald-glow);
}

.icon-rose {
  background: rgba(244, 63, 94, 0.14);
  color: var(--accent-rose);
  border-color: rgba(244, 63, 94, 0.3);
  box-shadow: 0 0 18px var(--accent-rose-glow);
}

.feature-title {
  font-family: var(--font-sans);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.22;
  margin-bottom: 10px;
  overflow-wrap: break-word;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
  overflow-wrap: break-word;
}

/* ==========================================================================
   11. DUAL DOWNLOAD HUB & 3-STEP QUICK START GUIDE
   ========================================================================== */

.download-section {
  background:
    radial-gradient(circle at 50% 30%, var(--primary-glow) 0%, transparent 65%),
    linear-gradient(180deg, rgba(15, 17, 23, 0.65) 0%, var(--bg-deep) 100%);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.download-passkey-box {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, var(--bg-card) 100%);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  margin-bottom: 28px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.download-passkey-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.dpk-left {
  max-width: 720px;
}

.dpk-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-amber);
  letter-spacing: 0.06em;
  display: inline-block;
  margin-bottom: 6px;
}

.dpk-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin: 0;
}

.btn-copy-passkey-alt {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 55%, #d97706 100%);
  color: var(--primary-contrast);
  border: 1px solid rgba(251, 191, 36, 0.5);
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.84rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
  flex-shrink: 0;
}

.btn-copy-passkey-alt:hover {
  transform: translateY(-2px);
  filter: brightness(1.07);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr));
  gap: 28px;
  margin-top: 28px;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}

.download-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  width: 100%;
}

.download-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-elevation);
}

.download-card.recommended {
  border-color: var(--primary);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.65);
}

.download-card:not(.recommended) .recommended-ribbon {
  display: none;
}

.recommended-ribbon {
  position: absolute;
  top: -13px;
  right: 22px;
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 55%, #d97706 100%);
  color: var(--primary-contrast);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 5px 14px;
  border-radius: 9999px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.45);
}

.download-header {
  margin-bottom: 18px;
}

.arch-title {
  font-family: var(--font-sans);
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.arch-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.specs-list {
  list-style: none;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 11px;
  flex: 1;
}

.specs-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-main);
  line-height: 1.45;
}

.specs-list svg {
  flex-shrink: 0;
  color: var(--accent-emerald);
  margin-top: 2px;
}

.hash-container {
  background: rgba(0, 0, 0, 0.42);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--text-dim);
  gap: 8px;
}

.hash-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.btn-copy-hash {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

.btn-copy-hash:hover {
  color: var(--text-main);
  border-color: var(--primary);
  background: var(--primary-soft);
}

.btn-verify-hash {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: var(--accent-emerald);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  text-decoration: none;
}

.btn-verify-hash:hover {
  background: var(--accent-emerald);
  color: var(--primary-contrast);
  box-shadow: 0 0 14px var(--accent-emerald-glow);
}

/* 3-Step Quick Start Guide (.quickstart-pipeline) */
.quickstart-pipeline {
  max-width: 960px;
  margin: 34px auto 12px auto;
  width: 100%;
}

.quickstart-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.qs-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-top: 2px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
  transition: var(--transition);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.qs-step-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-glow);
  box-shadow: 0 14px 32px rgba(0, 0, 0, 0.5);
}

.qs-step-num {
  font-family: var(--font-hud);
  font-variant-numeric: tabular-nums;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary-hover);
  background: var(--primary-soft);
  border: 1px solid var(--border-glow);
  padding: 3px 10px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  letter-spacing: 0.05em;
}

.qs-step-card h4,
.qs-step-title {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
}

.qs-step-card p,
.qs-step-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.qs-step-highlight {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.28);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-amber);
}

.qs-smartscreen-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: auto;
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.32);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--accent-cobalt-bright);
}

.qs-sim-pin-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: auto;
  padding: 7px 12px;
  border-radius: var(--radius-xs);
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(16, 185, 129, 0.36);
  color: var(--accent-emerald);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.qs-sim-pin-btn:hover {
  background: var(--accent-emerald);
  color: var(--primary-contrast);
  box-shadow: 0 0 16px var(--accent-emerald-glow);
}

/* ==========================================================================
   12. SECURITY PILLARS & FAQ ACCORDION
   ========================================================================== */

.security-banner {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, var(--primary-soft) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 38px 28px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
  text-align: center;
  box-shadow: var(--shadow-elevation);
}

.security-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.security-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(16, 185, 129, 0.32);
  color: var(--accent-emerald);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px var(--accent-emerald-glow);
}

.security-title {
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--text-main);
  overflow-wrap: break-word;
}

.security-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  overflow-wrap: break-word;
  line-height: 1.5;
}

/* FAQ Accordion */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  width: 100%;
}

.faq-item:hover,
.faq-item.open {
  border-color: var(--border-glow);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.4);
}

.faq-question {
  min-height: 54px;
  padding: 18px 22px;
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.98rem;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  text-align: left;
  gap: 14px;
}

.faq-question span {
  flex: 1;
  min-width: 0;
  word-break: break-word;
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.faq-icon {
  flex-shrink: 0;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.25s ease;
  color: var(--primary);
  width: 20px;
  height: 20px;
}

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

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.32s cubic-bezier(0.16, 1, 0.3, 1);
  padding: 0 22px;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.65;
  word-break: break-word;
  overflow-wrap: anywhere;
}

.faq-item.open .faq-answer {
  padding-bottom: 22px;
}

/* ==========================================================================
   13. FOOTER & TOAST NOTIFICATIONS
   ========================================================================== */

.footer {
  border-top: 1px solid var(--border-subtle);
  padding: 56px 0 38px 0;
  background: var(--bg-deep);
  color: var(--text-dim);
  font-size: 0.88rem;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 42px;
}

.footer-brand-desc {
  margin-top: 12px;
  color: var(--text-muted);
  max-width: 340px;
  line-height: 1.6;
  font-size: 0.88rem;
  overflow-wrap: break-word;
}

.footer-column-title {
  font-family: var(--font-sans);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.86rem;
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
  gap: 16px;
  flex-wrap: wrap;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  background: var(--bg-surface);
  border: 1px solid var(--primary);
  color: var(--text-main);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.65);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.86rem;
  font-weight: 600;
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
  max-width: calc(100vw - 44px);
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ==========================================================================
   14. FLAWLESS RESPONSIVE BREAKPOINTS (1024px, 768px, 480px)
   ========================================================================== */

/* Tablet Landscape & Compact Desktop (<= 1024px) */
@media (max-width: 1024px) {
  .container {
    padding: 0 20px;
  }

  .hero-stats-strip,
  .executive-telemetry-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .window-content {
    grid-template-columns: 205px minmax(0, 1fr);
    padding: 12px;
    gap: 12px;
  }

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

  .security-banner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

/* Tablet Portrait & Phablet (<= 768px) */
@media (max-width: 768px) {
  .site-header {
    padding: 0 14px;
    top: 10px;
  }

  .navbar {
    padding: 9px 14px;
  }

  .wpf-header-telemetry,
  .trust-bar-divider {
    display: none;
  }

  .hero-trust-pin-bar {
    border-radius: var(--radius-md);
    padding: 12px 14px;
  }

  .hero-stats-strip,
  .executive-telemetry-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .window-content {
    grid-template-columns: 1fr;
    padding: 10px;
    gap: 10px;
  }

  .mock-sidebar {
    flex-direction: row;
    overflow-x: auto;
    padding: 6px;
    gap: 6px;
    -webkit-overflow-scrolling: touch;
  }

  .mock-menu-item {
    white-space: nowrap;
    min-height: 36px;
    padding: 6px 10px;
    font-size: 0.75rem;
    border-left: none;
    border-bottom: 2px solid transparent;
    flex-shrink: 0;
  }

  .mock-menu-item.active {
    border-left: none;
    border-bottom: 2px solid var(--primary);
  }

  .mock-stat-cards,
  .mock-security-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 28px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

/* Mobile Handsets (<= 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 14px;
  }

  .navbar {
    padding: 8px 12px;
    border-radius: var(--radius-md);
  }

  .nav-brand-title {
    font-size: 0.92rem;
  }

  .btn-nav-download {
    padding: 6px 11px;
    font-size: 0.76rem;
  }

  .hero-title {
    font-size: clamp(1.7rem, 7.5vw, 2.25rem);
    margin: 14px 0 12px 0;
  }

  .hero-subtitle {
    font-size: 0.93rem;
    margin-bottom: 18px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats-strip,
  .executive-telemetry-strip {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .mock-tweak-row,
  .mock-driver-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .download-card {
    padding: 16px 20px;
  }

  .security-banner {
    grid-template-columns: 1fr;
    padding: 24px 16px;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ==========================================================================
   21. MODERN WEB STANDARDS & RENDERING OPTIMIZATION (Baseline 2024-2025)
   Features: content-visibility: auto, contain-intrinsic-size, Layout Isolation
   ========================================================================== */

/* Defer rendering of heavy below-the-fold blocks to slash TBT and accelerate FCP/LCP */
#os-matrix-mount {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 720px;
}

#security {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 460px;
}

#downloads {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 580px;
}

#faq {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 520px;
}

footer.footer {
  content-visibility: auto;
  contain-intrinsic-size: auto none auto 320px;
}

/* Structural Layout Containment for interactive widgets */
.os-matrix-card,
.mock-window,
.oscilloscope-box {
  contain: layout style;
}