:root{--paper: #f6f3ec;--paper-raised: #fffdf8;--ink: #211f19;--ink-soft: #5b5648;--ink-faint: #8a8474;--line: #e2dbc9;--line-strong: #cfc6ac;--green: #1f6b45;--green-deep: #123a26;--green-tint: #e9f1e9;--terracotta: #ad5a2a;--terracotta-deep: #7f3f1a;--terracotta-tint: #f6e9dd;--ok: #1f6b45;--warn: #a4451c;--font-display: "Titillium Web", "Segoe UI", system-ui, sans-serif;--font-body: "Titillium Web", "Segoe UI", system-ui, sans-serif;--font-mono: "Titillium Web", "Segoe UI", system-ui, sans-serif;--radius-sm: 4px;--radius: 7px;--shadow-card: 0 1px 2px rgba(33, 31, 25, .04), 0 6px 20px -12px rgba(33, 31, 25, .18)}*{box-sizing:border-box}::selection{background:var(--terracotta-tint);color:var(--terracotta-deep)}html{scroll-behavior:smooth}body{margin:0;font-family:var(--font-body);background:var(--paper);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased}a{color:inherit}:focus-visible{outline:2px solid var(--terracotta);outline-offset:2px;border-radius:3px}input,textarea,select,button{accent-color:var(--green)}.topbar{background:var(--green-deep);color:#f3f0e6;padding:22px clamp(16px,4vw,32px) 0;border-bottom:3px solid var(--terracotta)}.brand{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px;max-width:1040px;margin-left:auto;margin-right:auto;flex-wrap:wrap}.brand-left{display:flex;align-items:center;gap:14px}.brand-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.brand-university{height:45px;width:auto;display:block;background:#fffdf8;padding:6px 12px;border-radius:var(--radius-sm);flex-shrink:0}#user-chip{display:flex;align-items:center;gap:10px;font-size:.85rem;color:#f3f0e6d9}.user-chip-name{font-weight:600;color:#f3f0e6}.user-chip-src{font-size:.7rem;text-transform:uppercase;letter-spacing:.05em;border:1px solid rgba(243,240,230,.35);border-radius:3px;padding:2px 6px;color:#f3f0e6bf}#user-chip button{background:transparent;border:1px solid rgba(243,240,230,.4);color:#f3f0e6e6;padding:4px 10px;font-size:.78rem;margin:0}#user-chip button:hover{background:#f3f0e61f;border-color:#f3f0e6b3}.brand-mark{background:transparent;color:#f3f0e6;font-family:var(--font-mono);font-weight:700;font-size:.85rem;letter-spacing:.02em;border:1.5px solid rgba(243,240,230,.55);border-radius:var(--radius-sm);padding:7px 9px;flex-shrink:0}.brand h1{margin:0;font-family:var(--font-display);font-weight:700;font-size:1.5rem;letter-spacing:.01em}.brand p{margin:2px 0 0;font-size:.8rem;color:#f3f0e6b8;font-family:var(--font-mono)}#tabnav{display:flex;gap:clamp(10px,3vw,22px);flex-wrap:wrap;max-width:1040px;margin:0 auto}.tab{color:#f3f0e6ad;text-decoration:none;padding:0 2px 12px;font-size:.88rem;font-weight:500;border-bottom:2px solid transparent;transition:color .15s ease,border-color .15s ease}.tab:hover{color:#f3f0e6}.tab.active{background:transparent;color:#f3f0e6;font-weight:600;border-bottom-color:var(--terracotta)}main{max-width:1040px;margin:0 auto;padding:clamp(20px,4vw,36px) clamp(16px,4vw,32px) 60px}.card{background:var(--paper-raised);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card);padding:24px clamp(18px,3vw,28px);margin-bottom:22px}.eyebrow{display:inline-block;font-family:var(--font-mono);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--terracotta-deep);background:var(--terracotta-tint);padding:3px 8px;border-radius:3px;margin-bottom:10px}.card h2{margin:0 0 6px;font-family:var(--font-display);font-weight:700;font-size:1.3rem;color:var(--green-deep)}.card h3{margin-top:0;font-family:var(--font-display);font-weight:700;font-size:1.05rem;color:var(--green-deep)}.muted{color:var(--ink-soft);font-size:.9rem}.warn{color:var(--warn);font-size:.9rem}.ok{color:var(--ok);font-size:.9rem}.lab-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:16px;flex-wrap:wrap}.lab-head>div:first-child{flex:1;min-width:220px}.lab-head .eyebrow{margin-bottom:8px}.lab-head h2{margin-bottom:4px}.lab-score{flex-shrink:0;min-width:130px;text-align:right}.lab-score-value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1.7rem;font-weight:700;color:var(--green-deep);line-height:1.1}.lab-score-value span{font-size:.85rem;font-weight:500;color:var(--ink-faint)}.lab-score-bar{width:100%;height:5px;background:var(--line);border-radius:3px;overflow:hidden;margin:6px 0 4px}.lab-score-fill{height:100%;background:var(--terracotta);transition:width .35s ease}.lab-score-label{font-size:.65rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--ink-faint)}@media (max-width: 560px){.lab-score{text-align:left;width:100%}}.push-grade-btn{margin:10px 0 0;padding:6px 12px;font-size:.78rem;background:var(--terracotta);border-color:var(--terracotta);color:#fffdf8}.push-grade-btn:hover:not(:disabled){background:var(--terracotta-deep);border-color:var(--terracotta-deep)}.push-grade-btn:disabled{opacity:.6;cursor:default}.push-grade-status{font-size:.75rem;margin-top:6px;line-height:1.4}.lti-banner{background:var(--green-tint);border:1px solid var(--green);border-radius:var(--radius-sm);padding:10px 14px;margin-bottom:18px;font-size:.85rem;color:var(--green-deep)}.tab-score{display:inline-block;margin-left:7px;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:.68rem;font-weight:700;background:#f3f0e629;padding:1px 6px;border-radius:9px;vertical-align:2px}.auth-card{max-width:420px;margin:24px auto}.auth-card form{margin-top:8px}.auth-card button[type=submit]{width:100%;margin:6px 0 0;padding:10px 14px}.note{border:1px solid var(--terracotta-tint);border-left:3px solid var(--terracotta);background:var(--terracotta-tint);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:10px 14px;font-size:.9rem;color:var(--terracotta-deep)}.note strong{color:inherit}textarea,input[type=text],input[type=password],input:not([type]),select{width:100%;padding:9px 11px;border:1px solid var(--line-strong);background:var(--paper-raised);border-radius:var(--radius-sm);font-family:var(--font-body);font-size:.95rem;color:var(--ink);margin-bottom:10px;transition:border-color .15s ease}textarea:focus,input:focus,select:focus{border-color:var(--green)}label{display:block;font-size:.75rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:var(--ink-faint);margin-bottom:4px}input[type=checkbox]{width:auto;margin:0 6px 0 0;vertical-align:-2px}input[type=range]{width:100%;margin:4px 0 0}button{background:var(--paper-raised);border:1px solid var(--line-strong);color:var(--green-deep);padding:8px 14px;border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font-body);font-size:.87rem;font-weight:500;margin:0 8px 8px 0;transition:border-color .15s ease,background .15s ease,transform .1s ease}button:hover{border-color:var(--green);background:var(--green-tint)}button:active{transform:translateY(1px)}button.primary{background:var(--green);border-color:var(--green);color:#fdfbf5}button.primary:hover{background:var(--green-deep);border-color:var(--green-deep)}.preset-row,.button-row{margin-bottom:4px}.stat-row{display:flex;gap:0;margin:16px 0;flex-wrap:wrap;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.stat{padding:12px 20px 12px 0;margin-right:20px;text-align:left;min-width:90px;border-right:1px solid var(--line)}.stat:last-child{border-right:none;margin-right:0}.stat span{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:1.5rem;font-weight:700;color:var(--green-deep);line-height:1.1}.stat label{font-size:.68rem;font-weight:600;letter-spacing:.05em;color:var(--ink-faint);margin-top:4px;text-transform:uppercase}.token-chips{display:flex;flex-wrap:wrap;gap:5px}.token-chip{background:var(--green-tint);border:1px solid transparent;border-radius:3px;padding:2px 7px;font-size:.8rem;font-family:var(--font-mono);color:var(--green-deep)}.slider-row{display:flex;gap:32px;flex-wrap:wrap;margin-bottom:4px}.slider-row label{display:flex;flex-direction:column;gap:6px;font-size:.75rem;min-width:180px;text-transform:none;letter-spacing:0;color:var(--ink-soft)}.slider-row label span{font-family:var(--font-mono);color:var(--green-deep);font-weight:700}.output-list,.output-item{margin-top:10px}.output-item{background:var(--paper);border:1px solid var(--line);border-left:3px solid var(--green);border-radius:0 var(--radius-sm) var(--radius-sm) 0;padding:12px 14px;margin-bottom:10px}.output-meta{font-family:var(--font-mono);font-size:.72rem;color:var(--ink-faint);margin-bottom:6px;letter-spacing:.01em}.output-text{font-size:.95rem;white-space:pre-wrap}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:28px}@media (max-width: 800px){.two-col{grid-template-columns:1fr;gap:20px}}.output-item-wrong{border-left-color:var(--warn)}.cot-steps{margin:0 0 10px;padding-left:20px;font-size:.92rem}.cot-steps li{margin-bottom:5px}.cot-answer{padding-top:8px;border-top:1px solid var(--line);font-size:.95rem}.var-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:0 16px;margin-bottom:6px}.chain-step{border-left:2px solid var(--line-strong);padding:0 0 4px 16px;margin-bottom:18px}.chain-step-head{display:flex;align-items:center;gap:9px;margin-bottom:8px;font-size:.95rem;color:var(--green-deep)}.chain-step-num{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;background:var(--green);color:#fdfbf5;font-size:.72rem;font-weight:700;flex-shrink:0}code{font-family:var(--font-mono);font-size:.88em;background:var(--green-tint);color:var(--green-deep);padding:1px 5px;border-radius:3px}.checklist{list-style:none;padding:0;margin:0}.checklist li{padding:9px 0;border-bottom:1px solid var(--line);font-size:.92rem}.checklist li:last-child{border-bottom:none}.checklist label{display:flex;align-items:center;text-transform:none;letter-spacing:0;font-weight:400;font-size:inherit;color:var(--ink);cursor:pointer}.inline-form{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.inline-form input,.inline-form select{width:auto;flex:1;min-width:180px;margin-bottom:0}.data-table{width:100%;border-collapse:collapse;margin-top:14px;font-size:.88rem}.data-table th,.data-table td{border:none;border-bottom:1px solid var(--line);padding:9px 10px;text-align:left}.data-table th{background:transparent;font-family:var(--font-mono);font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-faint);border-bottom:1.5px solid var(--line-strong)}.data-table tbody tr:hover{background:var(--paper)}.footer{text-align:center;padding:24px 16px 36px;color:var(--ink-faint);font-size:.78rem;font-family:var(--font-mono);border-top:1px solid var(--line);margin-top:8px}ul.plain{padding-left:0;list-style:none;margin:0}ul.plain li{padding:8px 0;border-bottom:1px solid var(--line);font-size:.92rem}ul.plain li:last-child{border-bottom:none}