:root{--color-black: #000000;--color-white: #ffffff;--color-primary: #1976D2;--color-primary-light: #2196F3;--color-primary-lighter: #64B5F6;--color-primary-dark: #1565C0;--color-secondary: #FFA726;--color-secondary-light: #FFB74D;--color-secondary-dark: #F57C00;--color-accent: #43A047;--color-accent-light: #66BB6A;--color-accent-dark: #2E7D32;--color-text-primary: #1a1a1a;--color-text: #333333;--color-text-secondary: #666666;--color-text-tertiary: #999999;--color-text-light: #999999;--color-text-disabled: #cccccc;--color-bg: #ffffff;--color-bg-elevated: #ffffff;--color-bg-secondary: #fafafa;--color-bg-tertiary: #f5f5f5;--color-bg-gray: #e8e8e8;--color-bg-hover: #f0f0f0;--color-border-light: #e6e6e6;--color-border: #d0d0d0;--color-border-strong: #bfbfbf;--color-emphasis: #1976D2;--color-success: #43A047;--color-warning: #FFA726;--color-error: #E53935;--color-info: #1976D2;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 2px 4px rgba(0, 0, 0, .06);--shadow-md: 0 4px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 16px rgba(0, 0, 0, .1);--shadow-xl: 0 12px 24px rgba(0, 0, 0, .12);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--spacing-2xl: 48px;--font-xs: 12px;--font-sm: 14px;--font-md: 16px;--font-lg: 18px;--font-xl: 20px;--font-2xl: 24px;--font-3xl: 28px;--font-4xl: 32px;--font-weight-regular: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--line-height-tight: 1.2;--line-height-base: 1.5;--line-height-relaxed: 1.8;--radius-xs: 2px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--radius-2xl: 20px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--z-dropdown: 1000;--z-sticky: 1100;--z-fixed: 1200;--z-modal-backdrop: 1300;--z-modal: 1400;--z-popover: 1500;--z-tooltip: 1600}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{width:100%;height:100%}body{font-size:var(--font-md);color:var(--color-text);background-color:var(--color-bg);line-height:1.5}#app{width:100%;height:100%}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.flex-col{display:flex;flex-direction:column}.text-center{text-align:center}.text-sm{font-size:var(--font-sm)}.text-xs{font-size:var(--font-xs)}.text-lg{font-size:var(--font-lg)}.text-xl{font-size:var(--font-xl)}.text-2xl{font-size:var(--font-2xl)}.text-secondary{color:var(--color-text-secondary)}.text-light{color:var(--color-text-light)}.font-bold{font-weight:700}.truncate{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.line-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.btn{padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);background-color:var(--color-white);color:var(--color-text);font-size:var(--font-md);cursor:pointer;transition:all .3s}.btn:active{opacity:.7}.btn-primary{background-color:var(--color-primary);color:var(--color-white);border-color:var(--color-primary)}.btn-outline{background-color:transparent;border-color:var(--color-border)}.tag{display:inline-block;padding:2px 8px;font-size:var(--font-xs);border-radius:var(--radius-sm);background-color:var(--color-bg-secondary);color:var(--color-text-secondary);border:1px solid var(--color-border)}.card{background-color:var(--color-white);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--spacing-md)}.input{width:100%;padding:var(--spacing-sm) var(--spacing-md);border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--font-md);background-color:var(--color-white);color:var(--color-text)}.input:focus{outline:none;border-color:var(--color-text)}.divider{height:1px;background-color:var(--color-border);margin:var(--spacing-md) 0}