/* ===== RESET & BASE ===== */
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    :root {
      /* Colors */
      --bg-primary: #0a0e1a;
      --bg-secondary: #111827;
      --bg-tertiary: #1a1f35;
      --text-primary: #f8fafc;
      --text-secondary: #94a3b8;
      --text-muted: #64748b;
      
      /* Brand */
      --brand-blue: #3b82f6;
      --brand-cyan: #06b6d4;
      --brand-purple: #8b5cf6;
      --accent-orange: #f97316;
      --success-green: #10b981;
      
      /* Gradients */
      --gradient-primary: linear-gradient(135deg, #3b82f6, #06b6d4);
      --gradient-accent: linear-gradient(135deg, #8b5cf6, #ec4899);
      
      /* Spacing */
      --space-xs: 0.5rem;
      --space-sm: 1rem;
      --space-md: 1.5rem;
      --space-lg: 2rem;
      --space-xl: 3rem;
      --space-2xl: 4rem;
      
      /* Radius */
      --radius-sm: 0.5rem;
      --radius-md: 0.75rem;
      --radius-lg: 1rem;
      --radius-xl: 1.5rem;
      
      /* Shadows */
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
      --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
      --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
      
      /* Transitions */
      --transition-fast: 150ms ease;
      --transition-base: 250ms ease;
      --transition-slow: 350ms ease;
    }

    html {
      scroll-behavior: smooth;
      color-scheme: dark;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
      background: var(--bg-primary);
      color: var(--text-primary);
      line-height: 1.6;
      overflow-x: hidden;
    }

    /* Accessibility */
    .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 {
      outline: 2px solid var(--brand-blue);
      outline-offset: 3px;
      border-radius: var(--radius-sm);
    }

    /* ===== HEADER ===== */
    .header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(10, 14, 26, 0.8);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 var(--space-md);
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: var(--space-sm);
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
      text-decoration: none;
      transition: opacity var(--transition-fast);
    }

    .logo:hover {
      opacity: 0.8;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      background: var(--gradient-primary);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
    }

    .nav-links {
      display: flex;
      gap: var(--space-lg);
      list-style: none;
    }

    .nav-link {
      color: var(--text-secondary);
      text-decoration: none;
      font-weight: 500;
      transition: color var(--transition-fast);
      position: relative;
      padding: var(--space-xs) 0;
    }

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

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

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

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: var(--space-xs);
      padding: 0.625rem 1.25rem;
      background: var(--gradient-primary);
      color: white;
      border-radius: var(--radius-md);
      font-weight: 600;
      text-decoration: none;
      transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    }

    .nav-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: none;
      color: var(--text-primary);
      cursor: pointer;
      padding: var(--space-xs);
    }

    /* ===== HERO ===== */
    .hero {
      max-width: 1280px;
      margin: 0 auto;
      padding: var(--space-2xl) var(--space-md);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: var(--space-2xl);
      align-items: center;
      min-height: calc(100vh - 72px);
    }

    .hero-content {
      display: flex;
      flex-direction: column;
      gap: var(--space-lg);
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: var(--space-xs);
      padding: 0.5rem 1rem;
      background: rgba(59, 130, 246, 0.1);
      border: 1px solid rgba(59, 130, 246, 0.2);
      border-radius: 999px;
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--brand-blue);
      width: fit-content;
    }

    .pulse-dot {
      width: 8px;
      height: 8px;
      background: var(--brand-cyan);
      border-radius: 50%;
      animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }

    @keyframes pulse {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    .hero h1 {
      font-size: clamp(2.5rem, 5vw, 4rem);
      line-height: 1.1;
      font-weight: 800;
      letter-spacing: -0.02em;
    }

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

    .hero-description {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 540px;
    }

    .hero-actions {
      display: flex;
      gap: var(--space-md);
      flex-wrap: wrap;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: var(--space-xs);
      padding: 0.875rem 1.75rem;
      border-radius: var(--radius-md);
      font-weight: 600;
      text-decoration: none;
      transition: all var(--transition-fast);
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }

    .btn-primary {
      background: var(--gradient-primary);
      color: white;
      box-shadow: var(--shadow-md);
    }

    .btn-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 12px 24px rgba(59, 130, 246, 0.4);
    }

    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-primary);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.2);
    }

    .stats-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--space-lg);
      margin-top: var(--space-md);
    }

    .stat {
      text-align: center;
    }

    .stat-value {
      font-size: 2rem;
      font-weight: 800;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      display: block;
    }

    .stat-label {
      font-size: 0.875rem;
      color: var(--text-muted);
      text-transform: uppercase;
      letter-spacing: 0.05em;
    }

    .hero-visual {
      position: relative;
      display: flex;
      align-items: center;
      justify-content: center;
    }

    .mockup {
      width: 100%;
      max-width: 560px;
      background: var(--bg-secondary);
      border-radius: var(--radius-xl);
      border: 1px solid rgba(255, 255, 255, 0.1);
      overflow: hidden;
      box-shadow: var(--shadow-xl);
      position: relative;
    }

    .mockup::before {
      content: '';
      position: absolute;
      inset: -100px;
      background: radial-gradient(circle at 30% 30%, rgba(59, 130, 246, 0.2), transparent 70%);
      pointer-events: none;
    }

    .mockup-header {
      background: rgba(255, 255, 255, 0.03);
      padding: var(--space-sm) var(--space-md);
      display: flex;
      align-items: center;
      gap: var(--space-xs);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .mockup-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
    }

    .mockup-content {
      aspect-ratio: 16/10;
      background: linear-gradient(135deg, var(--bg-primary), var(--bg-tertiary));
      display: flex;
      align-items: center;
      justify-content: center;
      position: relative;
    }

    .mockup-pulse {
      width: 120px;
      height: 120px;
      border-radius: 50%;
      background: var(--gradient-primary);
      opacity: 0.2;
      animation: pulse-scale 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    }

    @keyframes pulse-scale {
      0%, 100% { transform: scale(1); opacity: 0.2; }
      50% { transform: scale(1.3); opacity: 0.1; }
    }

    /* ===== SECTIONS ===== */
    .section {
      max-width: 1280px;
      margin: 0 auto;
      padding: var(--space-2xl) var(--space-md);
    }

    .section-header {
      text-align: center;
      margin-bottom: var(--space-2xl);
    }

    .section-title {
      font-size: clamp(2rem, 4vw, 3rem);
      font-weight: 800;
      margin-bottom: var(--space-sm);
    }

    .section-subtitle {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 600px;
      margin: 0 auto;
    }

    /* ===== FEATURES ===== */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: var(--space-lg);
    }

    .feature-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: var(--space-xl);
      transition: all var(--transition-base);
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: '';
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(59, 130, 246, 0.1), transparent 50%);
      opacity: 0;
      transition: opacity var(--transition-base);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      border-color: rgba(59, 130, 246, 0.3);
      box-shadow: var(--shadow-lg);
    }

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

    .feature-icon {
      width: 56px;
      height: 56px;
      background: rgba(59, 130, 246, 0.1);
      border-radius: var(--radius-md);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--brand-blue);
      margin-bottom: var(--space-md);
    }

    .feature-card h3 {
      font-size: 1.25rem;
      margin-bottom: var(--space-sm);
    }

    .feature-card p {
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== HOW IT WORKS ===== */
    .steps {
      display: grid;
      gap: var(--space-xl);
      max-width: 800px;
      margin: 0 auto;
    }

    .step {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: var(--space-lg);
      align-items: start;
    }

    .step-number {
      width: 48px;
      height: 48px;
      background: var(--gradient-primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 800;
      color: white;
      flex-shrink: 0;
    }

    .step-content h3 {
      font-size: 1.5rem;
      margin-bottom: var(--space-sm);
    }

    .step-content p {
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== DOWNLOAD ===== */
    .download-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: var(--space-lg);
    }

    .download-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      padding: var(--space-xl);
      text-align: center;
      transition: all var(--transition-base);
    }

    .download-card:hover {
      transform: translateY(-4px);
      border-color: rgba(59, 130, 246, 0.3);
      box-shadow: var(--shadow-lg);
    }

    .platform-icon {
      width: 80px;
      height: 80px;
      background: rgba(59, 130, 246, 0.1);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto var(--space-md);
      color: var(--brand-blue);
    }

    .download-card h3 {
      font-size: 1.5rem;
      margin-bottom: var(--space-sm);
    }

    .download-card p {
      color: var(--text-secondary);
      margin-bottom: var(--space-md);
    }

    .requirements-list {
      list-style: none;
      margin-bottom: var(--space-lg);
      text-align: left;
    }

    .requirements-list li {
      padding: var(--space-xs) 0;
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      gap: var(--space-xs);
    }

    .requirements-list li::before {
      content: '✓';
      color: var(--success-green);
      font-weight: bold;
    }

    .store-badges {
      display: flex;
      flex-direction: column;
      gap: var(--space-sm);
      align-items: center;
    }

    .store-badge {
      height: 48px;
      transition: transform var(--transition-fast);
    }

    .store-badge:hover {
      transform: scale(1.05);
    }

    .release-note {
      margin-top: var(--space-md);
      font-size: 0.875rem;
      color: var(--text-muted);
      text-align: center;
    }

    .release-link {
      color: var(--brand-blue);
      text-decoration: none;
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
      transition: color var(--transition-fast);
    }

    .release-link:hover {
      color: var(--brand-cyan);
      text-decoration: underline;
    }

    .release-link svg {
      flex-shrink: 0;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: var(--space-md);
    }

    .faq-item {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: var(--radius-lg);
      overflow: hidden;
      transition: all var(--transition-base);
    }

    .faq-item:hover {
      border-color: rgba(59, 130, 246, 0.3);
    }

    .faq-question {
      width: 100%;
      padding: var(--space-lg);
      background: transparent;
      border: none;
      color: var(--text-primary);
      font-size: 1.125rem;
      font-weight: 600;
      text-align: left;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: var(--space-md);
    }

    .faq-icon {
      flex-shrink: 0;
      transition: transform var(--transition-base);
      color: var(--brand-blue);
    }

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

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

    .faq-item.open .faq-answer {
      max-height: 500px;
    }

    .faq-answer-content {
      padding: 0 var(--space-lg) var(--space-lg);
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* ===== FOOTER ===== */
    .footer {
      background: var(--bg-secondary);
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      margin-top: var(--space-2xl);
    }

    .footer-content {
      max-width: 1280px;
      margin: 0 auto;
      padding: var(--space-2xl) var(--space-md);
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: var(--space-2xl);
    }

    .footer-brand {
      display: flex;
      flex-direction: column;
      gap: var(--space-md);
    }

    .footer-description {
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .footer-section h4 {
      font-size: 0.875rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: var(--space-md);
      color: var(--text-primary);
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: var(--space-sm);
    }

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

    .footer-link:hover {
      color: var(--brand-blue);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: var(--space-lg) var(--space-md);
      text-align: center;
      color: var(--text-muted);
      font-size: 0.875rem;
    }

    /* ===== RESPONSIVE ===== */
    @media (max-width: 968px) {
      .nav-links, .nav-actions {
        display: none;
      }

      .mobile-menu-btn {
        display: block;
      }

      .hero {
        grid-template-columns: 1fr;
        padding: var(--space-xl) var(--space-md);
        text-align: center;
      }

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

      .hero-description {
        max-width: 100%;
      }

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

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

    @media (max-width: 640px) {
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .btn {
        width: 100%;
      }

      .features-grid, .download-grid {
        grid-template-columns: 1fr;
      }
    }

    /* ===== UTILITIES ===== */
    .container {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 var(--space-md);
    }

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

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