*{margin:0;padding:0;box-sizing:border-box}:root{--color-bg-primary: #FFFFFF;--color-bg-secondary: #F5F5F7;--color-bg-tertiary: #E8E8ED;--color-text-primary: #1D1D1F;--color-text-secondary: #6E6E73;--color-accent: #007AFF;--color-accent-hover: #0051D5;--color-success: #34C759;--color-border: #D2D2D7;--color-shadow: rgba(0, 0, 0, .1);--color-shadow-hover: rgba(0, 0, 0, .15);--spacing-xs: 8px;--spacing-sm: 16px;--spacing-md: 24px;--spacing-lg: 32px;--spacing-xl: 48px;--spacing-2xl: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-size-small: 15px;--font-size-body: 17px;--font-size-h3: 24px;--font-size-h2: 32px;--font-size-h1: 48px;--transition-fast: .2s ease;--transition-medium: .3s ease}body{font-family:var(--font-family);font-size:var(--font-size-body);line-height:1.5;color:var(--color-text-primary);background-color:var(--color-bg-secondary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}h1{font-size:var(--font-size-h1);font-weight:700;letter-spacing:-.5px;margin-bottom:var(--spacing-sm)}h2{font-size:var(--font-size-h2);font-weight:600;margin-bottom:var(--spacing-sm)}h3{font-size:var(--font-size-h3);font-weight:600;margin-bottom:var(--spacing-xs)}p{font-size:var(--font-size-body);color:var(--color-text-secondary);line-height:1.5}::-webkit-scrollbar{width:12px;height:12px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:6px;border:3px solid var(--color-bg-secondary)}::-webkit-scrollbar-thumb:hover{background:#B8B8BD}