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minmax(0,1fr);gap:1rem;display:grid}.math-options[data-astro-cid-kerrefsa] label[data-astro-cid-kerrefsa]{margin-bottom:.5rem;font-size:.875rem;font-weight:650;display:block}.math-options[data-astro-cid-kerrefsa] select[data-astro-cid-kerrefsa]{-webkit-appearance:none;appearance:none;border:1px solid var(--control-border);border-radius:var(--control-radius);background:var(--card) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23223C31' stroke-width='1.75' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m7 10 5 5 5-5'/%3E%3C/svg%3E") no-repeat right 12px center;width:100%;min-height:52px;color:var(--ink);font:inherit;padding:.75rem 2.5rem .75rem .85rem}.math-hint[data-astro-cid-kerrefsa]{margin:.75rem 0 1rem;font-size:.875rem}.math-session-note[data-astro-cid-kerrefsa]{margin:0 0 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1rem;font-size:.875rem}.math-error[data-astro-cid-kerrefsa]{color:var(--bad);text-align:center;font-size:.85rem}.math-keypad[data-astro-cid-kerrefsa]{grid-template-columns:repeat(3,1fr);gap:.5rem;width:min(100%,320px);margin:0 auto 1.1rem;display:grid}.math-keypad[data-astro-cid-kerrefsa] button[data-astro-cid-kerrefsa]{background:var(--card);border:1px solid var(--control-border);min-width:0;min-height:48px;color:var(--ink);border-radius:var(--control-radius);font:inherit;cursor:pointer;touch-action:manipulation;font-size:1.25rem;font-weight:550}.math-keypad[data-astro-cid-kerrefsa] button[data-astro-cid-kerrefsa]:hover{background:var(--math-soft)}.math-keypad[data-astro-cid-kerrefsa] .math-key-action[data-astro-cid-kerrefsa]{color:var(--muted);overflow-wrap:anywhere;word-break:break-word;padding-inline:4px;font-size:.875rem;line-height:1.1}.math-wide[data-astro-cid-kerrefsa]{justify-content:center;gap:.75rem;width:min(100%,320px);margin:0 auto;display:flex}.math-feedback[data-astro-cid-kerrefsa]{border:1px solid var(--accent);background:var(--math-soft);border-radius:12px;margin:1.3rem 0;padding:1.2rem;font-size:1rem;line-height:1.65}.math-feedback[data-astro-cid-kerrefsa][data-correct=true]{border-color:var(--good)}.math-feedback[data-astro-cid-kerrefsa][data-correct=false]{border-color:var(--bad)}.math-feedback[data-astro-cid-kerrefsa] p[data-astro-cid-kerrefsa]{margin:.4rem 0 0}.math-correct-answer[data-astro-cid-kerrefsa]{font-weight:650}#math-method[data-astro-cid-kerrefsa]{color:var(--muted)}#math-results{text-align:center}#math-results .math-round-label[data-astro-cid-kerrefsa]{margin:.5rem 0 0}.math-result-metrics[data-astro-cid-kerrefsa]{margin:1.3rem 0 .5rem}.math-result-metrics[data-astro-cid-kerrefsa] dt[data-astro-cid-kerrefsa]{color:var(--muted);font-size:.875rem}.math-result-score[data-astro-cid-kerrefsa]{letter-spacing:-.03em;font-variant-numeric:tabular-nums;margin:.35rem 0 0;font-size:4rem;font-weight:650;line-height:1}.math-review[data-astro-cid-kerrefsa]{text-align:left;border-top:1px solid var(--line);margin-top:1.8rem;padding-top:1.5rem}.math-review[data-astro-cid-kerrefsa] ol[data-astro-cid-kerrefsa]{padding-left:1.2rem}.math-review[data-astro-cid-kerrefsa] li{margin:1.2rem 0;padding-left:.25rem}.math-review[data-astro-cid-kerrefsa] p{color:var(--muted);margin:.35rem 0 0;font-size:.875rem;line-height:1.6}.math-review[data-astro-cid-kerrefsa] strong{font-variant-numeric:tabular-nums}.math-footnote[data-astro-cid-kerrefsa]{color:var(--muted);text-align:center;margin:1.4rem .5rem 0;font-size:.875rem;line-height:1.5}.math-terminal-error[data-astro-cid-kerrefsa]{text-align:center}.math-terminal-error[data-astro-cid-kerrefsa] p[data-astro-cid-kerrefsa]{color:var(--muted);line-height:1.65}[data-astro-cid-kerrefsa][hidden]{display:none!important}@media (width>=701px){.practice-main:has(#math-play[data-scratchpad-open=true][data-scratchpad-modal=false]){max-width:1120px}#math-play[data-scratchpad-open=true][data-scratchpad-modal=false] .math-workspace[data-astro-cid-kerrefsa]{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:24px;display:grid}#math-play[data-scratchpad-open=true][data-scratchpad-modal=false] .math-equation[data-astro-cid-kerrefsa]{font-size:3rem}}@media (width<=480px),(height<=520px){.math-result-score[data-astro-cid-kerrefsa]{font-size:3.5rem}#math-play{padding:12px}#math-play progress[data-astro-cid-kerrefsa]{display:none}#math-play #math-live{margin:4px 0;padding-block:6px}#math-play .math-round-context[data-astro-cid-kerrefsa]{margin-top:0}#math-play .math-round-label[data-astro-cid-kerrefsa]{font-size:.875rem;line-height:1.3}#math-play .math-equation[data-astro-cid-kerrefsa]{margin:.45rem 0 .55rem;font-size:2rem;line-height:1.2}#math-play .math-answer-label[data-astro-cid-kerrefsa]{margin-bottom:4px;line-height:1.25}#math-play .math-answer[data-astro-cid-kerrefsa]{min-height:56px;font-size:1.6rem}#math-play .math-input-hint[data-astro-cid-kerrefsa]{display:none}#math-play .math-keypad[data-astro-cid-kerrefsa]{gap:6px;margin-top:10px;margin-bottom:12px}#math-play .math-wide[data-astro-cid-kerrefsa]{padding:10px 12px;font-size:1rem}#math-play .math-feedback[data-astro-cid-kerrefsa]{margin:1rem 0;padding:1rem}}@media (width<=480px){.practice-heading h1{overflow-wrap:anywhere}#math-setup{padding:16px}#math-setup-title,#math-setup .math-setup-copy[data-astro-cid-kerrefsa],#math-setup .math-session-note[data-astro-cid-kerrefsa]{display:none}.math-options[data-astro-cid-kerrefsa]{grid-template-columns:1fr;gap:8px}.math-options[data-astro-cid-kerrefsa] label[data-astro-cid-kerrefsa]{margin-bottom:4px}.math-options[data-astro-cid-kerrefsa] select[data-astro-cid-kerrefsa]{background-position:right 8px center;min-height:48px;padding:.6rem 2rem .6rem .65rem;font-size:.875rem}.math-hint[data-astro-cid-kerrefsa]{margin:8px 0;line-height:1.4}.math-keypad[data-astro-cid-kerrefsa] .math-key-action[data-astro-cid-kerrefsa]{padding-block:1px;font-size:.75rem;line-height:1}}@media (width>=481px) and (height<=520px){#math-play #math-live{display:none}#math-play .math-question-area[data-astro-cid-kerrefsa]{grid-template-columns:minmax(140px,.8fr) minmax(260px,1.2fr);align-items:center;gap:6px 16px;display:grid}#math-play .math-round-context[data-astro-cid-kerrefsa]{grid-column:1/-1}#math-play .math-equation[data-astro-cid-kerrefsa]{grid-area:2/1}#math-play #math-answer-form[data-astro-cid-kerrefsa]{grid-area:2/2}#math-play .math-answer-label[data-astro-cid-kerrefsa]{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}#math-play .math-answer[data-astro-cid-kerrefsa]{min-height:44px}#math-play .math-keypad[data-astro-cid-kerrefsa]{grid-template-columns:repeat(6,minmax(0,1fr));gap:4px;margin:6px auto}#math-play .math-keypad[data-astro-cid-kerrefsa] button[data-astro-cid-kerrefsa]{min-height:44px}#math-play .math-feedback[data-astro-cid-kerrefsa]{grid-column:1/-1;margin:6px 0;padding:8px 10px;font-size:.875rem;line-height:1.35}#math-play #math-next[data-astro-cid-kerrefsa]{grid-column:1/-1}#math-play[data-phase=feedback] #math-answer-form[data-astro-cid-kerrefsa]{grid-area:3/1}#math-play[data-phase=feedback] .math-feedback[data-astro-cid-kerrefsa]{grid-area:2/2;align-self:stretch}#math-play[data-phase=feedback] #math-next[data-astro-cid-kerrefsa]{grid-area:3/2;min-height:44px;padding:6px 10px}}@media (forced-colors:active){.math-feedback[data-astro-cid-kerrefsa][data-correct]{border-width:2px}.math-answer[data-astro-cid-kerrefsa]:focus{outline-color:highlight}}