:root{--color-primary: #667eea;--color-primary-dark: #5a6fd6;--color-primary-light: #7b8eef;--color-secondary: #764ba2;--color-secondary-dark: #6a4392;--color-secondary-light: #8957b2;--gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);--gradient-primary-hover: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-secondary-dark) 100%);--color-success: #27ae60;--color-success-dark: #219a52;--color-success-light: #2ecc71;--color-error: #e74c3c;--color-error-dark: #c0392b;--color-error-light: #ec7063;--color-warning: #f39c12;--color-warning-dark: #d68910;--color-warning-light: #f5b041;--color-info: #2176c7;--color-info-dark: #1a67b3;--color-info-light: #3498db;--color-titlebar: #231279;--color-titlebar-text: #ffffff;--color-bg-desktop: radial-gradient(circle at 60% 40%, #3a7bd5 0%, #1e3c72 100%);--color-bg-app: #f5f5f5;--color-bg-card: #ffffff;--color-bg-input: #f8fafc;--color-bg-overlay: rgba(0, 0, 0, .8);--color-glass-bg: rgba(243, 246, 251, .65);--color-glass-blur: blur(12px) saturate(1.2);--color-text-primary: #333333;--color-text-secondary: #666666;--color-text-muted: #999999;--color-text-inverse: #ffffff;--color-text-link: var(--color-primary);--color-border: #e1e5e9;--color-border-dark: #b5c9e2;--color-border-focus: var(--color-primary);--font-family-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-family-mono: "Consolas", "Courier New", monospace;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-md: 1.08rem;--font-size-lg: 1.15rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-2xl: 24px;--spacing-3xl: 32px;--spacing-4xl: 40px;--border-width: 1px;--border-width-thick: 2px;--border-radius-sm: 4px;--border-radius-md: 6px;--border-radius-lg: 8px;--border-radius-xl: 12px;--border-radius-2xl: 16px;--border-radius-full: 50%;--shadow-sm: 0 1px 4px rgba(0, 0, 0, .1);--shadow-md: 0 2px 8px rgba(0, 0, 0, .1);--shadow-lg: 0 4px 12px rgba(0, 0, 0, .1);--shadow-xl: 0 8px 32px rgba(31, 38, 135, .25);--shadow-taskbar: 0 -2px 8px rgba(0, 0, 0, .1);--z-base: 1;--z-dropdown: 10;--z-sticky: 20;--z-modal: 30;--z-overlay: 50;--z-tooltip: 100;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease;--transition-spring: .25s cubic-bezier(.4, 2, .6, 1);--taskbar-height: 56px;--header-height: 52px;--input-height: 44px;--button-height: 44px;--mobile-max-width: 480px;--mobile-nav-height: 56px}.focus-visible:focus,*:focus-visible{outline:2px solid var(--color-primary);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}.sr-only-focusable:focus{position:static;width:auto;height:auto;padding:inherit;margin:inherit;overflow:visible;clip:auto;white-space:normal}