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@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Student practice and investigations. */
.random-button{margin:3px 0 9px;justify-content:center}.mode-picker{border:0;padding:0;margin:20px 0 8px;display:grid;grid-template-columns:1fr 1fr;gap:9px}.mode-picker legend{font-size:.77rem;font-weight:750;margin-bottom:9px}.mode-picker label{border:1px solid #d4d6da;border-radius:10px;padding:11px;display:flex;align-items:flex-start;gap:9px;cursor:pointer;min-width:0}.mode-picker label:has(input:checked){border-color:var(--maroon);background:#fcf1eb}.mode-picker input{accent-color:var(--maroon);width:16px;height:16px;min-height:16px;margin:2px 0 0;flex-shrink:0}.mode-picker strong{display:block;font-size:.77rem;line-height:1.4}.mode-picker small{display:block;color:var(--muted);font-size:.7rem;margin-top:4px}.practice-panel{background:#fffaf0;border:1px solid #ead6a0;border-radius:11px;padding:15px;margin:0 0 16px}.practice-panel h3{font-size:.98rem;margin:0}.practice-panel .field-help{margin:8px 0}.practice-panel .calculations{margin-top:12px}.practice-panel .calculation{background:white;padding:10px}.practice-panel label{display:block;overflow-wrap:anywhere;font-size:.78rem;font-weight:700;color:var(--dark);margin-bottom:9px}.practice-panel input{font-size:1rem;min-width:0}.practice-feedback{border:1px solid #e7c8c8;padding:11px 13px;border-radius:8px;font-size:.8rem;margin:0 0 14px;background:#fff3f1}.practice-feedback.success{border-color:#b6dcc6;background:#e9f6ee;color:#175b33}.investigation-card{margin:24px 0;padding:24px;background:#fffdf7;border-color:#eadfc1}.investigation-card h3{font-size:1.25rem;color:var(--dark);margin:21px 0 9px}.investigation-card #idea-prompt{font-size:.95rem;max-width:870px;color:var(--ink);margin-bottom:13px}.idea-challenge{color:var(--muted);font-size:.88rem;max-width:870px;border-left:3px solid var(--gold);padding-left:12px}.idea-controls{display:flex;justify-content:space-between;gap:12px;margin-top:21px}.investigation-card a{color:var(--maroon);text-underline-offset:3px}.example-row select{max-width:100%;text-overflow:ellipsis}.practice-panel input[aria-invalid=true]{background:#fff2f0;border:2px solid #b22b32}@media(max-width:580px){.mode-picker{grid-template-columns:1fr}.investigation-card{padding:18px}.investigation-card h3{font-size:1.12rem}.investigation-card #idea-prompt{font-size:.88rem}.idea-controls .button{font-size:.75rem;padding:10px}.mode-picker small{font-size:.72rem}}

.starting-values{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;max-width:600px;margin:18px 0}.starting-values>div{padding:12px 15px;background:#fff;border:1px solid #e9dfc9;border-radius:9px;min-width:0}.starting-values span{display:block;color:var(--muted);font-size:.72rem;font-weight:700}.starting-values strong{display:block;font-size:1.45rem;font-variant-numeric:tabular-nums;color:var(--dark);overflow-wrap:anywhere}@media(max-width:580px){.starting-values{gap:8px}.starting-values>div{padding:10px}.starting-values strong{font-size:1.14rem}}