.usnco-lab{--lab-blue:#1e3a5f;--lab-blue-light:#2d5a8e;--lab-blue-pale:#e8f0fe;--lab-gold:#c9a227;--lab-gold-light:#f5e6a3;--lab-green:#2e7d32;--lab-green-light:#e8f5e9;--lab-red:#c62828;--lab-red-light:#ffebee;--lab-purple:#6a1b9a;--lab-purple-light:#f3e5f5;--lab-orange:#e65100;--lab-orange-light:#fff3e0;--lab-gray:#f5f5f5;--lab-gray-mid:#bdbdbd;--lab-gray-dark:#424242;--lab-radius:10px;--lab-shadow:0 2px 12px #00000014;--blue:#1e3a5f;--blue-light:#2d5a8e;--blue-pale:#e8f0fe;--gold:#c9a227;--gold-light:#f5e6a3;--green:#2e7d32;--green-light:#e8f5e9;--red:#c62828;--red-light:#ffebee;--purple:#6a1b9a;--purple-light:#f3e5f5;--orange:#e65100;--orange-light:#fff3e0;--gray:#f5f5f5;--gray-mid:#bdbdbd;--gray-dark:#424242;--radius:10px;--shadow:0 2px 12px #00000014;color:#1a1a1a;line-height:1.6}.usnco-lab .lab-header{background:linear-gradient(135deg,var(--lab-blue)0%,var(--lab-blue-light)100%);color:#fff;text-align:center;padding:2.5rem 2rem 2rem;position:relative;overflow:hidden}.usnco-lab .lab-header:after{content:"";background:#f0f2f5;border-radius:50% 50% 0 0;height:60px;position:absolute;bottom:-30px;left:0;right:0}.usnco-lab .lab-header h1{letter-spacing:-.5px;font-size:2rem;font-weight:700}@media (max-width:640px){.usnco-lab .lab-header{padding:1.5rem 1rem 1.2rem}.usnco-lab .lab-header h1{font-size:1.35rem}}.usnco-lab .lab-header p{opacity:.85;margin-top:.3rem;font-size:1.05rem}@media (max-width:640px){.usnco-lab .lab-header p{font-size:.85rem}}.usnco-lab .lab-nav{z-index:30;background:#f0f2f5;flex-wrap:wrap;justify-content:center;gap:.5rem;padding:.8rem 1rem .6rem;display:flex;position:sticky;top:0}@media (max-width:640px){.usnco-lab .lab-nav{-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap;justify-content:flex-start;gap:.35rem;padding:.6rem .5rem;overflow-x:auto}.usnco-lab .lab-nav::-webkit-scrollbar{display:none}}.usnco-lab .lab-nav button{border:2px solid var(--lab-blue);color:var(--lab-blue);cursor:pointer;white-space:nowrap;background:#fff;border-radius:30px;flex-shrink:0;padding:.55rem 1.3rem;font-size:.9rem;font-weight:600;transition:all .2s}.usnco-lab .lab-nav button.active,.usnco-lab .lab-nav button:hover{background:var(--lab-blue);color:#fff}.usnco-lab .lab-dashboard{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem;max-width:900px;margin:0 auto;padding:1rem 2rem;display:grid}@media (max-width:640px){.usnco-lab .lab-dashboard{grid-template-columns:repeat(3,1fr);gap:.6rem;padding:.8rem}.usnco-lab .stat-card{padding:.8rem .5rem}.usnco-lab .stat-card .num{font-size:1.4rem}.usnco-lab .stat-card .label{font-size:.65rem}}.usnco-lab .stat-card{border-radius:var(--lab-radius);text-align:center;box-shadow:var(--lab-shadow);background:#fff;padding:1.2rem}.usnco-lab .stat-card .num{color:var(--lab-blue);font-size:2rem;font-weight:800}.usnco-lab .stat-card .label{color:#666;text-transform:uppercase;letter-spacing:.5px;font-size:.8rem}.usnco-lab .lab-section{max-width:1100px;margin:1.5rem auto;padding:0 1.5rem}@media (max-width:640px){.usnco-lab .lab-section{margin:1rem auto;padding:0 .75rem}.usnco-lab .card-body{padding:0 1rem!important}.usnco-lab .lab-card.open .card-body{padding-bottom:1rem!important}}.usnco-lab .section-title{color:var(--lab-blue);border-bottom:3px solid var(--lab-gold);margin-bottom:1rem;padding-bottom:.4rem;font-size:1.3rem;font-weight:700;display:inline-block}.usnco-lab .cards{gap:1.2rem;display:grid}.usnco-lab .lab-card{border-radius:var(--lab-radius);box-shadow:var(--lab-shadow);border-left:5px solid var(--lab-blue);background:#fff;transition:transform .15s;overflow:hidden}.usnco-lab .lab-card.qual{border-left-color:var(--lab-green)}.usnco-lab .lab-card.quant{border-left-color:var(--lab-purple)}.usnco-lab .card-header{cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:1rem;padding:1.2rem 1.5rem;display:flex}@media (max-width:640px){.usnco-lab .card-header{flex-wrap:wrap;gap:.5rem;padding:1rem}}.usnco-lab .card-header:hover{background:var(--lab-gray)}.usnco-lab .lab-badge{text-transform:uppercase;letter-spacing:.5px;border-radius:20px;flex-shrink:0;padding:.2rem .7rem;font-size:.7rem;font-weight:700;display:inline-block}.usnco-lab .lab-badge.quant{background:var(--lab-purple-light);color:var(--lab-purple)}.usnco-lab .lab-badge.qual{background:var(--lab-green-light);color:var(--lab-green)}.usnco-lab .card-year{color:#999;flex-shrink:0;min-width:35px;font-size:.85rem;font-weight:600}.usnco-lab .card-title{flex:1;min-width:0;font-size:1.05rem;font-weight:700}@media (max-width:640px){.usnco-lab .card-title{flex-basis:100%;order:10;font-size:.95rem}}.usnco-lab .card-chevron{color:#999;flex-shrink:0;font-size:1.2rem;transition:transform .2s}@media (max-width:640px){.usnco-lab .card-chevron{margin-left:auto}}.usnco-lab .lab-card.open .card-chevron{transform:rotate(90deg)}.usnco-lab .card-body{max-height:0;padding:0 1.5rem;transition:max-height .3s,padding-bottom .3s;overflow:hidden}.usnco-lab .lab-card.open .card-body{max-height:5000px;padding-bottom:1.5rem}.usnco-lab .detail-tabs{border-bottom:2px solid #eee;flex-wrap:wrap;gap:.3rem;margin-bottom:1rem;padding-bottom:.5rem;display:flex}@media (max-width:640px){.usnco-lab .detail-tabs{-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-wrap:nowrap;margin-bottom:.8rem;padding-bottom:.4rem;overflow-x:auto}.usnco-lab .detail-tabs::-webkit-scrollbar{display:none}}.usnco-lab .detail-tabs button{cursor:pointer;color:#888;white-space:nowrap;background:0 0;border:none;border-radius:6px 6px 0 0;flex-shrink:0;padding:.4rem .9rem;font-size:.82rem;font-weight:600;transition:all .15s}.usnco-lab .detail-tabs button.active{color:var(--lab-blue);background:var(--lab-blue-pale)}.usnco-lab .detail-pane{display:none}.usnco-lab .detail-pane.active{display:block}.usnco-lab .data-table{border-collapse:collapse;width:100%;margin:.5rem 0;font-size:.85rem}.usnco-lab .data-table th{background:var(--lab-blue);color:#fff;text-align:left;padding:.6rem .8rem;font-weight:600}.usnco-lab .data-table td{border-bottom:1px solid #eee;padding:.5rem .8rem}.usnco-lab .data-table tr:hover td{background:var(--lab-gray)}.usnco-lab .data-table.compact th{padding:.4rem .5rem;font-size:.75rem}.usnco-lab .data-table.compact td{padding:.35rem .5rem;font-size:.78rem}.usnco-lab .rubric-bar{border-radius:6px;height:28px;margin:.5rem 0;display:flex;overflow:hidden}.usnco-lab .rubric-bar .seg{color:#fff;justify-content:center;align-items:center;font-size:.7rem;font-weight:700;display:flex}.usnco-lab .tip-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1rem;display:grid}.usnco-lab .tip-card{border-radius:var(--lab-radius);box-shadow:var(--lab-shadow);border-top:4px solid var(--lab-gold);background:#fff;padding:1.3rem}.usnco-lab .tip-card h4{color:var(--lab-blue);margin-bottom:.5rem;font-size:.95rem}.usnco-lab .tip-card ul{color:#444;padding-left:1.2rem;font-size:.88rem}.usnco-lab .tip-card ul li{margin-bottom:.3rem}@media (max-width:640px){.usnco-lab .tip-grid{grid-template-columns:1fr}}.usnco-lab .chart-row{grid-template-columns:1fr 1fr;gap:1.5rem;margin:1rem 0;display:grid}.usnco-lab .chart-box{border-radius:var(--lab-radius);box-shadow:var(--lab-shadow);background:#fff;padding:1.2rem}.usnco-lab .chart-box h4{color:var(--lab-blue);margin-bottom:.8rem;font-size:.9rem}@media (max-width:700px){.usnco-lab .chart-row{grid-template-columns:1fr}}.usnco-lab .tier{border-radius:4px;margin:.15rem 0;padding:.15rem .5rem;font-size:.75rem;font-weight:600;display:inline-block}.usnco-lab .tier.full{color:#1b5e20;background:#c8e6c9}.usnco-lab .tier.partial{color:#f57f17;background:#fff9c4}.usnco-lab .tier.low{color:#b71c1c;background:#ffcdd2}.usnco-lab .key-point{background:var(--lab-blue-pale);border-left:4px solid var(--lab-blue);border-radius:0 6px 6px 0;margin:.5rem 0;padding:.7rem 1rem;font-size:.88rem}.usnco-lab .obs-list{padding-left:1.2rem;font-size:.88rem}.usnco-lab .obs-list li{margin-bottom:.25rem}.usnco-lab .table-scroll{overflow-x:auto}.usnco-lab .trend-tag{background:var(--lab-orange-light);color:var(--lab-orange);border-radius:12px;margin:.15rem;padding:.2rem .6rem;font-size:.75rem;font-weight:600;display:inline-block}.usnco-lab .diff{text-transform:uppercase;letter-spacing:.5px;border-radius:12px;flex-shrink:0;padding:.15rem .55rem;font-size:.65rem;font-weight:700;display:inline-block}.usnco-lab .diff.easy{color:#1b5e20;background:#c8e6c9}.usnco-lab .diff.medium{color:#f57f17;background:#fff9c4}.usnco-lab .diff.hard{color:#b71c1c;background:#ffcdd2}.usnco-lab .study-toggle{border:2px solid var(--lab-gold);background:var(--lab-gold-light);color:var(--lab-blue);cursor:pointer;letter-spacing:.3px;border-radius:30px;padding:.5rem 1.2rem;font-size:.88rem;font-weight:700;transition:all .2s}.usnco-lab .study-toggle:hover,.usnco-lab .study-toggle.active{background:var(--lab-gold);color:#fff}.usnco-lab .study-prompt{border:2px dashed var(--lab-gray-mid);border-radius:var(--lab-radius);text-align:center;background:linear-gradient(135deg,#f8f9fa 0%,#e9ecef 100%);margin:.3rem 0;padding:1.5rem;display:none}.usnco-lab .study-prompt.visible{display:block}.usnco-lab .study-prompt p{color:#555;margin-bottom:.8rem;font-size:.92rem;font-style:italic;line-height:1.5}.usnco-lab .study-prompt button{background:var(--lab-blue);color:#fff;cursor:pointer;border:none;border-radius:20px;padding:.45rem 1.4rem;font-size:.85rem;font-weight:600;transition:all .2s}.usnco-lab .study-prompt button:hover{background:var(--lab-blue-light);transform:translateY(-1px);box-shadow:0 2px 8px #1e3a5f4d}.usnco-lab .study-content.study-hidden{display:none!important}.usnco-lab .reveal-all-btn{text-align:right;margin-bottom:.5rem;display:none}.usnco-lab .reveal-all-btn.visible{display:block}.usnco-lab .reveal-all-btn button{border:1.5px solid var(--lab-gray-mid);cursor:pointer;color:#888;background:0 0;border-radius:15px;padding:.3rem .9rem;font-size:.78rem;font-weight:600;transition:all .15s}.usnco-lab .reveal-all-btn button:hover{border-color:var(--lab-blue);color:var(--lab-blue);background:var(--lab-blue-pale)}.usnco-lab .topic-filter{flex-wrap:wrap;justify-content:center;gap:.5rem;padding:0 1rem .5rem;display:flex}@media (max-width:640px){.usnco-lab .topic-filter{gap:.35rem;padding:0 .5rem .5rem}.usnco-lab .topic-filter select,.usnco-lab .diff-filter{padding:.4rem .8rem!important;font-size:.78rem!important}}.usnco-lab .topic-filter select{border:2px solid var(--lab-blue);color:var(--lab-blue);cursor:pointer;background:#fff;border-radius:30px;padding:.45rem 1.2rem;font-size:.85rem;font-weight:600}.usnco-lab .expand-collapse-btn{border:1.5px solid var(--lab-gray-mid);color:#888;cursor:pointer;background:#fff;border-radius:20px;padding:.4rem 1rem;font-size:.8rem;font-weight:600;transition:all .15s}.usnco-lab .expand-collapse-btn:hover{border-color:var(--lab-blue);color:var(--lab-blue);background:var(--lab-blue-pale)}.usnco-lab .diff-filter{border:2px solid var(--lab-blue);color:var(--lab-blue);cursor:pointer;background:#fff;border-radius:30px;padding:.45rem 1.2rem;font-size:.85rem;font-weight:600}.usnco-lab .resource-nav-btn{border:2px solid var(--lab-gold);color:var(--lab-gold);cursor:pointer;background:#fff;border-radius:30px;padding:.55rem 1.3rem;font-size:.9rem;font-weight:600;transition:all .2s}.usnco-lab .resource-nav-btn:hover{background:var(--lab-gold);color:#fff}.usnco-lab .video-container{border-radius:8px;height:0;padding-bottom:56.25%;position:relative;overflow:hidden}.usnco-lab .video-container iframe{border:0;border-radius:8px;width:100%;height:100%;position:absolute;top:0;left:0}.usnco-lab .resource-card{border-radius:var(--lab-radius);box-shadow:var(--lab-shadow);border-left:5px solid var(--lab-gold);background:#fff;overflow:hidden}.usnco-lab .resource-list{color:#444;padding-left:1.3rem;font-size:.88rem;line-height:1.7}.usnco-lab .resource-list li{margin-bottom:.3rem}.usnco-lab .resource-list strong{color:var(--lab-blue)}.usnco-lab .lab-footer{text-align:center;color:#999;padding:2rem;font-size:.8rem}.usnco-lab .kbd-hint{color:#999;margin-left:.3rem;font-size:.7rem;font-weight:400}@media print{.usnco-lab .lab-header{padding:1rem}.usnco-lab .lab-header:after{display:none}.usnco-lab .lab-nav,.usnco-lab .lab-dashboard,.usnco-lab .chart-row,.usnco-lab .chart-box,.usnco-lab .study-toggle,.usnco-lab .study-prompt,.usnco-lab .reveal-all-btn,.usnco-lab .topic-filter,.usnco-lab .expand-collapse-btn,.usnco-lab .diff-filter,.usnco-lab .resource-nav-btn,.usnco-lab .video-container{display:none!important}.usnco-lab .lab-section{max-width:100%;padding:0}.usnco-lab .lab-card{box-shadow:none;page-break-inside:avoid;border:1px solid #ddd}.usnco-lab .card-body{max-height:unset!important;padding:.5rem 1rem!important;display:block!important}.usnco-lab .detail-pane{border-top:1px solid #eee;margin-bottom:.8rem;padding-top:.5rem;display:block!important}.usnco-lab .detail-tabs{display:none}.usnco-lab .study-content,.usnco-lab .study-content.study-hidden{display:block!important}.usnco-lab .data-table th{-webkit-print-color-adjust:exact;print-color-adjust:exact;background:#333}.usnco-lab .rubric-bar .seg{-webkit-print-color-adjust:exact;print-color-adjust:exact}.usnco-lab .tip-grid{grid-template-columns:1fr 1fr}.usnco-lab .lab-footer{padding:.5rem}}