:root {
      --colors-background-primary: #ffffff;
      --colors-background-secondary: #f9fafb;
      --colors-background-tertiary: #f3f4f6;
      --colors-background-elevated: #ffffff;
      --colors-background-glass: rgba(255, 255, 255, 0.72);
      --colors-text-primary: #1d1d1f;
      --colors-text-secondary: #6e6e73;
      --colors-text-tertiary: #636366;
      --colors-border-primary: #e5e7eb;
      --colors-border-secondary: #d1d5db;
      --colors-brand-primary: #0071e3;
      --colors-brand-secondary: #7c3aed;
      --colors-success: #10b981;
      --colors-error: #ef4444;
      --colors-warning: #f59e0b;
      --spacing-xs: 4px;
      --spacing-sm: 8px;
      --spacing-md: 16px;
      --spacing-lg: 24px;
      --spacing-xl: 32px;
      --spacing-2xl: 48px;
      --spacing-3xl: 64px;
      --spacing-4xl: 96px;
      --spacing-5xl: 128px;
      --fontSize-xs: 12px;
      --fontSize-sm: 14px;
      --fontSize-base: 16px;
      --fontSize-lg: 18px;
      --fontSize-xl: 20px;
      --fontSize-2xl: 24px;
      --fontSize-3xl: 30px;
      --fontSize-4xl: 36px;
      --fontSize-5xl: 48px;
      --fontSize-6xl: 60px;
      --fontSize-7xl: 72px;
      --fontSize-8xl: 96px;
      --fontFamily-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
      --fontFamily-serif: Georgia, "Times New Roman", Times, serif;
      --fontFamily-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;
      --fontWeight-normal: 400;
      --fontWeight-medium: 500;
      --fontWeight-semibold: 600;
      --fontWeight-bold: 700;
      --lineHeight-tight: 1.1;
      --lineHeight-snug: 1.25;
      --lineHeight-normal: 1.5;
      --lineHeight-relaxed: 1.75;
      --borderRadius-none: 0px;
      --borderRadius-sm: 4px;
      --borderRadius-md: 8px;
      --borderRadius-lg: 12px;
      --borderRadius-full: 9999px;
      --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
      --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
      --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
      --shadow-xl: 0 20px 50px -12px rgba(0, 0, 0, 0.12);
      --maxWidth-sm: 640px;
      --maxWidth-md: 768px;
      --maxWidth-lg: 1024px;
      --maxWidth-xl: 1280px;
      --zIndex-dropdown: 100;
      --zIndex-sticky: 200;
      --zIndex-modal: 300;
      --zIndex-tooltip: 400;
      --opacity-subtle: 0.5;
      --opacity-muted: 0.7;
      --opacity-overlay: 0.8;
      --duration-fast: 150ms;
      --duration-normal: 300ms;
      --duration-slow: 500ms;
      --duration-slower: 800ms;
      --easing-ease: ease;
      --easing-easeIn: cubic-bezier(0.4, 0, 1, 0.2);
      --easing-easeOut: cubic-bezier(0, 0, 0.2, 1);
      --easing-easeInOut: cubic-bezier(0.4, 0, 0.2, 1);
      --gradient-subtle: linear-gradient(180deg, #f9fafb 0%, #ffffff 100%);
      --gradient-brand: linear-gradient(135deg, #0071e3 0%, #7c3aed 100%);
      --gradient-warm: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
      --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 113, 227, 0.12) 0%, transparent 70%);
      --gradient-mesh: radial-gradient(at 27% 37%, rgba(0, 113, 227, 0.06) 0%, transparent 50%), radial-gradient(at 97% 21%, rgba(124, 58, 237, 0.06) 0%, transparent 50%), radial-gradient(at 52% 99%, rgba(0, 113, 227, 0.04) 0%, transparent 50%);
    }
    
    @media (prefers-color-scheme: dark) {
      :root {
        --colors-background-primary: #000000;
        --colors-background-secondary: #111111;
        --colors-background-tertiary: #1a1a1a;
        --colors-background-elevated: #161616;
        --colors-background-glass: rgba(22, 22, 22, 0.72);
        --colors-text-primary: #f5f5f7;
        --colors-text-secondary: #a1a1a6;
        --colors-text-tertiary: #86868b;
        --colors-border-primary: #222222;
        --colors-border-secondary: #333333;
        --colors-brand-primary: #2997ff;
        --colors-brand-secondary: #a78bfa;
        --colors-success: #10b981;
        --colors-error: #ef4444;
        --colors-warning: #f59e0b;
        --spacing-xs: 4px;
        --spacing-sm: 8px;
        --spacing-md: 16px;
        --spacing-lg: 24px;
        --spacing-xl: 32px;
        --spacing-2xl: 48px;
        --spacing-3xl: 64px;
        --spacing-4xl: 96px;
        --spacing-5xl: 128px;
        --fontSize-xs: 12px;
        --fontSize-sm: 14px;
        --fontSize-base: 16px;
        --fontSize-lg: 18px;
        --fontSize-xl: 20px;
        --fontSize-2xl: 24px;
        --fontSize-3xl: 30px;
        --fontSize-4xl: 36px;
        --fontSize-5xl: 48px;
        --fontSize-6xl: 60px;
        --fontSize-7xl: 72px;
        --fontSize-8xl: 96px;
        --fontFamily-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
        --fontFamily-serif: Georgia, "Times New Roman", Times, serif;
        --fontFamily-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, monospace;
        --fontWeight-normal: 400;
        --fontWeight-medium: 500;
        --fontWeight-semibold: 600;
        --fontWeight-bold: 700;
        --lineHeight-tight: 1.1;
        --lineHeight-snug: 1.25;
        --lineHeight-normal: 1.5;
        --lineHeight-relaxed: 1.75;
        --borderRadius-none: 0px;
        --borderRadius-sm: 4px;
        --borderRadius-md: 8px;
        --borderRadius-lg: 12px;
        --borderRadius-full: 9999px;
        --shadow-sm: 0 1px 2px 0 rgba(255, 255, 255, 0.02);
        --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.03);
        --shadow-lg: 0 10px 25px -3px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.04);
        --shadow-xl: 0 20px 50px -12px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
        --maxWidth-sm: 640px;
        --maxWidth-md: 768px;
        --maxWidth-lg: 1024px;
        --maxWidth-xl: 1280px;
        --zIndex-dropdown: 100;
        --zIndex-sticky: 200;
        --zIndex-modal: 300;
        --zIndex-tooltip: 400;
        --opacity-subtle: 0.5;
        --opacity-muted: 0.7;
        --opacity-overlay: 0.8;
        --duration-fast: 150ms;
        --duration-normal: 300ms;
        --duration-slow: 500ms;
        --duration-slower: 800ms;
        --easing-ease: ease;
        --easing-easeIn: cubic-bezier(0.4, 0, 1, 0.2);
        --easing-easeOut: cubic-bezier(0, 0, 0.2, 1);
        --easing-easeInOut: cubic-bezier(0.4, 0, 0.2, 1);
        --gradient-subtle: linear-gradient(180deg, #0a0a0a 0%, #111111 100%);
        --gradient-brand: linear-gradient(135deg, #2997ff 0%, #a78bfa 100%);
        --gradient-warm: linear-gradient(135deg, #f97316 0%, #ef4444 100%);
        --gradient-hero: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(41, 151, 255, 0.15) 0%, transparent 70%);
        --gradient-mesh: radial-gradient(at 27% 37%, rgba(41, 151, 255, 0.08) 0%, transparent 50%), radial-gradient(at 97% 21%, rgba(167, 139, 250, 0.08) 0%, transparent 50%), radial-gradient(at 52% 99%, rgba(41, 151, 255, 0.05) 0%, transparent 50%);
      }
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      padding: 0;
      font-family: system-ui, -apple-system, sans-serif;
      background-color: var(--colors-background-primary);
      color: var(--colors-text-primary);
    }

    :focus-visible {
      outline: 2px solid var(--colors-brand-primary);
      outline-offset: 2px;
    }

    .skip-link {
      position: absolute;
      left: -9999px;
      top: auto;
      width: 1px;
      height: 1px;
      overflow: hidden;
      z-index: 9999;
      padding: 1rem;
      background: var(--colors-background-primary);
      color: var(--colors-text-primary);
      text-decoration: underline;
    }

    .skip-link:focus {
      position: fixed;
      left: 1rem;
      top: 1rem;
      width: auto;
      height: auto;
      overflow: visible;
    }
    @keyframes fadeIn {
  from { opacity: 0 }
  to { opacity: 1 }
}
    @keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px) }
  to { opacity: 1; transform: translateY(0) }
}
    @keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px) }
  to { opacity: 1; transform: translateY(0) }
}
    @keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-40px) }
  to { opacity: 1; transform: translateX(0) }
}
    @keyframes slideInRight {
  from { opacity: 0; transform: translateX(40px) }
  to { opacity: 1; transform: translateX(0) }
}
    @keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9) }
  to { opacity: 1; transform: scale(1) }
}
    @keyframes pulse {
  0% { transform: scale(1) }
  50% { transform: scale(1.05) }
  100% { transform: scale(1) }
}
    @keyframes float {
  0% { transform: translateY(0px) }
  50% { transform: translateY(-10px) }
  100% { transform: translateY(0px) }
}