:root{--brand-red: #E53935;--brand-red-light: #FF5252;--brand-red-dark: #C62828;--brand-red-subtle: #FFEBEE;--flash-orange: #FF8F00;--flash-orange-light: #FFB74D;--flash-orange-bg: #FFF3E0;--success-green: #43A047;--success-green-light: #66BB6A;--success-green-bg: #E8F5E9;--info-blue: #1976D2;--info-blue-bg: #E3F2FD;--bg-page: #F5F5F5;--bg-card: #FFFFFF;--text-primary: #212121;--text-secondary: #616161;--text-hint: #9E9E9E;--divider: #EEEEEE;--divider-strong: #E0E0E0;--shadow-card: 0 2px 12px rgba(0,0,0,.06);--shadow-elevated: 0 8px 24px rgba(0,0,0,.1);--shadow-overlay: 0 16px 48px rgba(0,0,0,.2);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;--font-size-xs: 11px;--font-size-sm: 12px;--font-size-base: 14px;--font-size-md: 15px;--font-size-lg: 17px;--font-size-xl: 20px;--font-size-2xl: 24px;--font-size-3xl: 28px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 999px;--ease-smooth: cubic-bezier(.16, 1, .3, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--duration-fast: .15s;--duration-normal: .25s;--duration-slow: .4s}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:transparent}body{font-family:var(--font-family);background:var(--bg-page);color:var(--text-primary);line-height:1.5;overflow-x:hidden}#app{min-height:100vh;max-width:100vw;overflow-x:hidden}::-webkit-scrollbar{display:none}button,[class*=btn],[class*=button],a,[role=button]{-webkit-tap-highlight-color:transparent;transition:opacity var(--duration-fast) ease,transform var(--duration-fast) ease}button:active,[class*=btn]:active,[class*=button]:active,a:active,[role=button]:active{opacity:.65;transform:scale(.97)}button,[class*=btn],[class*=button]{touch-action:manipulation}.btn-loading,button[disabled],[class*=btn][disabled]{opacity:.6;pointer-events:none;cursor:not-allowed}