:root{--bg: #f1f5f9;--surface: #ffffff;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--primary: #2563eb;--primary-hover: #1d4ed8;--green: #16a34a;--green-bg: #dcfce7;--amber: #d97706;--amber-bg: #fef3c7;--red: #dc2626;--red-bg: #fee2e2;--blue: #2563eb;--blue-bg: #dbeafe;--gray-bg: #e2e8f0;--radius: 8px;--shadow: 0 1px 3px rgba(15, 23, 42, .08)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}.app{min-height:100vh;display:flex;flex-direction:column}.app-header{background:#0f172a;color:#fff}.app-header-inner{max-width:1100px;margin:0 auto;padding:16px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}.brand{display:flex;align-items:center;gap:12px}.brand-logo{width:40px;height:40px;border-radius:var(--radius);background:var(--primary);color:#fff;font-weight:700;display:flex;align-items:center;justify-content:center}.brand h1{margin:0;font-size:18px}.brand p{margin:0}.app-header .muted{color:#94a3b8}.demo-box{display:flex;flex-direction:column;align-items:flex-end;gap:6px;max-width:380px}.demo-status{margin:0;color:#cbd5e1;font-size:12px;text-align:right}.app-body{flex:1;max-width:1100px;width:100%;margin:0 auto;padding:24px}.app-footer{max-width:1100px;width:100%;margin:0 auto;padding:8px 24px 24px;font-size:12px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.stepnav{display:flex;gap:4px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:6px;margin-bottom:24px;box-shadow:var(--shadow)}.stepnav-item{flex:1;display:flex;align-items:center;gap:8px;padding:10px 12px;border:none;background:transparent;border-radius:6px;cursor:pointer;font:inherit;color:var(--muted);position:relative}.stepnav-item:disabled{cursor:not-allowed}.stepnav-num{width:24px;height:24px;border-radius:50%;background:var(--gray-bg);color:var(--muted);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;flex-shrink:0}.stepnav-item.active{background:var(--blue-bg);color:var(--blue);font-weight:600}.stepnav-item.active .stepnav-num{background:var(--blue);color:#fff}.stepnav-item.done:not(.active) .stepnav-num{background:var(--green);color:#fff}.stepnav-label{white-space:nowrap}.stepnav-connector{flex:1;height:2px;background:var(--gray-bg);margin-left:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;border:1px solid transparent;border-radius:var(--radius);font:inherit;font-weight:500;cursor:pointer;transition:background .15s,border-color .15s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-secondary{background:var(--surface);color:var(--text);border-color:var(--border)}.btn-secondary:hover:not(:disabled){background:var(--bg)}.btn-ghost{background:transparent;color:var(--muted)}.btn-ghost:hover:not(:disabled){color:var(--text);background:var(--bg)}.btn-danger{background:var(--red);color:#fff}.btn-danger:hover:not(:disabled){background:#b91c1c}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow);margin-bottom:24px}.card-title{margin:0 0 8px;font-size:16px}.muted{color:var(--muted)}.small{font-size:12px}code{background:var(--bg);border:1px solid var(--border);border-radius:4px;padding:1px 5px;font-size:12px}.file-form{display:flex;align-items:center;gap:12px;margin-top:12px;flex-wrap:wrap}.file-input{font:inherit}.text-form{margin-top:12px}textarea,select,input[type=text]{width:100%;padding:8px 10px;border:1px solid var(--border);border-radius:6px;font:inherit;background:#fff}textarea:focus,select:focus,input:focus{outline:2px solid var(--blue-bg);border-color:var(--blue)}select{width:auto}.model-select{display:flex;align-items:center;gap:8px;font-weight:500}.model-select select{min-width:220px}.tabs{display:inline-flex;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;margin:12px 0}.tab{padding:8px 18px;border:none;background:var(--surface);cursor:pointer;font:inherit;color:var(--muted)}.tab.active{background:var(--blue);color:#fff;font-weight:600}.table-wrap{overflow-x:auto;margin:12px 0}.table{width:100%;border-collapse:collapse;border:1px solid var(--border);background:#fff}.table th,.table td{padding:8px 10px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}.table th{background:#f8fafc;font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);font-weight:600}.table tr:last-child td{border-bottom:none}.table tr.row-low{background:#fff5f5}.table tr.row-medium{background:#fffbeb}.table tr.row-skipped{opacity:.5}.col-num{text-align:right;white-space:nowrap}.col-check,.col-unit{width:1%;white-space:nowrap;text-align:center}.col-qty{white-space:nowrap}.desc-cell{max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.override-grid{display:grid;grid-template-columns:110px 130px 130px;gap:6px;min-width:400px}.candidate-select{min-width:200px;max-width:280px}.badge{display:inline-block;padding:2px 8px;border-radius:999px;font-size:12px;font-weight:600;white-space:nowrap}.badge-green{background:var(--green-bg);color:#15803d}.badge-amber{background:var(--amber-bg);color:#b45309}.badge-red{background:var(--red-bg);color:#b91c1c}.badge-blue{background:var(--blue-bg);color:var(--blue)}.badge-gray{background:var(--gray-bg);color:var(--muted)}.error-box{margin-top:12px;padding:10px 14px;border:1px solid #fca5a5;background:var(--red-bg);color:#991b1b;border-radius:6px;font-weight:500}.info-box{margin-top:12px;padding:10px 14px;border:1px solid var(--blue-bg);background:var(--blue-bg);color:#1e3a8a;border-radius:6px}.error-list{margin-top:12px;background:var(--red-bg);border:1px solid #fca5a5;border-radius:6px;padding:10px 14px}.error-list h5{margin:0 0 6px;font-size:13px;color:#991b1b}.error-list ul{margin:0;padding-left:18px;color:#7f1d1d}.result{margin-top:16px;border-top:1px solid var(--border);padding-top:16px}.result h4,.result-title{margin:16px 0 8px;font-size:14px}.stat-row{display:flex;gap:12px;margin:12px 0;flex-wrap:wrap}.stat{flex:1;min-width:120px;background:#f8fafc;border:1px solid var(--border);border-radius:var(--radius);padding:12px;text-align:center}.stat-value{display:block;font-size:22px;font-weight:700;color:var(--primary)}.stat-label{font-size:12px;color:var(--muted)}.actions{display:flex;gap:12px;margin-top:12px}.nav-actions{display:flex;justify-content:space-between;margin-top:24px;padding-top:16px;border-top:1px solid var(--border)}.match-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:8px}.approval-banner{display:flex;align-items:center;gap:10px;border:1px solid var(--amber-bg);background:var(--amber-bg);border-radius:6px;padding:10px 14px;margin:12px 0;color:#92400e}.offer-result h4{margin:16px 0 8px}.email-draft{font-family:inherit}.iframe-wrap{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.iframe-wrap iframe{width:100%;height:600px;border:none;display:block;background:#fff}.app-footer .muted{color:var(--muted)}