:root{--bg: #f5f7fa;--bg-card: #ffffff;--text: #1a1a2e;--text-secondary: #6b7280;--primary: #4f46e5;--primary-hover: #4338ca;--danger: #ef4444;--danger-hover: #dc2626;--success: #10b981;--border: #e5e7eb;--radius: 8px;--shadow: 0 1px 3px rgba(0,0,0,.1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;border-radius:var(--radius);padding:8px 16px;font-size:14px;font-weight:500;transition:background .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:var(--danger-hover)}.btn-secondary{background:var(--border);color:var(--text)}.btn-secondary:hover{background:#d1d5db}input,select,textarea{border:1px solid var(--border);border-radius:var(--radius);padding:8px 12px;font-size:14px;width:100%;outline:none;transition:border-color .15s}input:focus,select:focus,textarea:focus{border-color:var(--primary)}.card{background:var(--bg-card);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}table{width:100%;border-collapse:collapse}th,td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border)}th{font-weight:600;font-size:13px;color:var(--text-secondary);text-transform:uppercase}.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:12px;font-weight:500}.badge-green{background:#d1fae5;color:#065f46}.badge-red{background:#fee2e2;color:#991b1b}.badge-blue{background:#dbeafe;color:#1e40af}