.topics{grid-template-columns:repeat(4,minmax(0,1fr))}.topic{padding:20px;min-height:195px}.topic.active{padding:19px}.custom-column{display:flex;flex-wrap:wrap;align-items:center;gap:9px;width:100%;padding:14px;background:#f0f3e9;border-radius:10px;font-size:13px}.custom-column input{width:95px;padding:9px;border:1px solid #aabda0;border-radius:6px}.custom-column #custom-error{color:#a33d32;width:100%}.custom-column #custom-error:empty{display:none}.builder-legend{font-size:13px;line-height:1.6;min-height:42px}.builder-scroll{overflow-x:auto;padding:12px 0}.builder-table-wrap{--column-cell:48px;position:relative;width:max-content;min-width:0;margin:auto;padding-top:28px}.builder-table{border-collapse:collapse;table-layout:fixed;font-family:Consolas,monospace;font-size:32px;width:calc(var(--cols) * var(--column-cell))}.builder-table td,.builder-table th{width:var(--column-cell);height:48px;text-align:center}.builder-table th{font:10px Manrope,Arial,sans-serif;color:#6c7d63;height:28px}.builder-table .annotations td{font-size:22px;height:35px;font-weight:bold}.builder-table .active-place{background:#e9d99f;border-radius:4px}.builder-table .changed-digit{text-decoration:line-through;text-decoration-color:#c34238;text-decoration-thickness:2px}.builder-table .result td{border-top:2px solid #59734b}.builder-table .partial{color:#61824f}.builder-table .slot{width:40px;height:44px;border:2px solid #648255;border-radius:7px;font:28px Consolas,monospace;text-align:center;background:#fffefa;color:#284b3d;padding:2px}.builder-table .carry-slot{border-color:#c34238;color:#b52e27;height:34px;font-size:23px}.builder-table .full-answer{width:100%;max-width:250px;letter-spacing:5px}.transfer-red{color:#b52e27!important;font-weight:800}.base-green{color:#32723d;font-weight:800}.builder-equation{font-size:24px;line-height:1.7;margin:12px 0}.transfer-curve{position:absolute;top:5px;height:34px;overflow:visible;pointer-events:none}.transfer-curve path{fill:none;stroke:#c34238;stroke-width:2.5;stroke-linecap:round;stroke-linejoin:round}.transfer-choice{display:flex;flex-wrap:wrap;gap:8px;margin:15px 0}.answer-form .builder-question{margin:15px 0;line-height:1.7}.answer-form .answer-row{margin:15px 0}.builder-table .slot:focus{outline:3px solid #d5b354;outline-offset:3px}@media(max-width:960px){.topics{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:760px){.topics{grid-template-columns:1fr}.topic{min-height:130px}.builder-table-wrap{--column-cell:39px}.builder-table{font-size:28px}.builder-table .slot{width:33px;font-size:25px}.builder-table .full-answer{width:100%}.builder-table th{font-size:8px}.builder-equation{font-size:23px}.custom-column input{width:80px}}

.division-work{--column-cell:48px;position:relative;width:max-content;margin:15px auto}.division-table .divisor{border-left:2px solid #59734b;border-bottom:2px solid #59734b}.division-table .remainder td:not(:last-child){border-top:1px solid #59734b}.division-table .slot{min-width:30px;max-width:100%;letter-spacing:4px}.division-entry{background:#e9d99f}.division-drop{position:absolute;top:0;pointer-events:none}.division-drop path{fill:none;stroke:#b52e27;stroke-width:2;stroke-dasharray:4 3}.multiply-curve{position:absolute;top:28px;left:0;width:100%;height:auto;pointer-events:none}.multiply-curve path{fill:none;stroke:#32723d;stroke-width:2;stroke-linecap:round}@media(max-width:760px){.division-work{--column-cell:39px}}

.multiply-curve{overflow:visible}.division-table .divisor{width:auto}.division-table col{width:var(--column-cell)}