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#ffffff;--bg-secondary: #f7fafc;--bg-tertiary: #edf2f7;--border-color: #e2e8f0;--border-radius: 12px;--border-radius-lg: 16px;--border-radius-xl: 20px;--shadow-sm: 0 1px 3px rgba(0,0,0,.1);--shadow-md: 0 4px 6px rgba(0,0,0,.1);--shadow-lg: 0 10px 15px rgba(0,0,0,.1);--shadow-xl: 0 20px 25px rgba(0,0,0,.15);--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 16px;--spacing-lg: 24px;--spacing-xl: 32px;--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft 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var(--transition-base);text-decoration:none}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-success{background:var(--success-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-danger{background:var(--danger-gradient);color:#fff;box-shadow:var(--shadow-md)}.btn-danger:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-secondary)}.btn-secondary:hover:not(:disabled){background:var(--border-color)}.btn-outline{background:transparent;border:2px solid var(--primary-color);color:var(--primary-color)}.btn-outline:hover:not(:disabled){background:var(--primary-color);color:#fff}.card{background:var(--bg-primary);border-radius:var(--border-radius-lg);box-shadow:var(--shadow-md);overflow:hidden;transition:all var(--transition-base)}.card:hover{box-shadow:var(--shadow-lg)}.input{width:100%;padding:12px 16px;font-size:1rem;border:1px solid var(--border-color);border-radius:var(--border-radius);outline:none;transition:all var(--transition-fast)}.input:focus{border-color:var(--primary-color);box-shadow:0 0 0 3px #667eea1a}.badge{display:inline-flex;align-items:center;padding:4px 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768px){:root{font-size:14px}.btn{padding:10px 20px;font-size:.9rem}.card{border-radius:var(--border-radius)}}.text-center{text-align:center}.text-left{text-align:left}.text-right{text-align:right}.mt-1{margin-top:var(--spacing-sm)}.mt-2{margin-top:var(--spacing-md)}.mt-3{margin-top:var(--spacing-lg)}.mt-4{margin-top:var(--spacing-xl)}.mb-1{margin-bottom:var(--spacing-sm)}.mb-2{margin-bottom:var(--spacing-md)}.mb-3{margin-bottom:var(--spacing-lg)}.mb-4{margin-bottom:var(--spacing-xl)}.hidden{display:none}.block{display:block}.flex{display:flex}.grid{display:grid}