:root{--line:#e4e8ee;--blue:#4b6cba}
.public-number-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:25px 0 45px}.public-number-grid>a{display:grid;grid-template-columns:30px 1fr;gap:4px 10px;align-items:center;padding:16px;background:#fff;border:1px solid #e1e7ef;border-radius:8px;text-decoration:none}.public-number-grid>a:hover{border-color:#8ea6d5}.public-number-grid b{grid-row:span 2;font-size:23px;font-weight:550;color:#4b6cba}.public-number-grid span{font-size:13px;line-height:1.45}.public-number-grid small{font-size:11px;color:#7a8699}.public-topics{margin:40px 0}.public-task-list{border:1px solid #e1e7ef;border-radius:10px;overflow:hidden;margin:25px 0}.public-task-row{display:flex;gap:17px;align-items:flex-start;padding:22px;text-decoration:none;border-bottom:1px solid #e8edf3;background:#fff}.public-task-row:last-child{border-bottom:0}.public-task-row:hover{background:#f9fbfe}.public-task-number{flex:none;width:30px;color:#7a8eae;font-size:19px}.public-task-row>span:nth-child(2){flex:1;min-width:0}.public-task-row strong{font-size:16px;font-weight:550;display:block}.public-task-row small{font-size:11px;color:#7e899a;display:block;margin:5px 0 9px}.public-task-preview{font-size:13px;color:#6b7789;line-height:1.7;display:block}.public-related{margin:42px 0}.public-related h2{font-size:26px}.public-pagination{display:flex;gap:8px;flex-wrap:wrap;margin:25px 0}.public-pagination>a,.public-pagination>span{border:1px solid #dfe6f0;border-radius:6px;padding:7px 13px;text-decoration:none;font-size:14px}.public-pagination>[aria-current]{background:#edf2fb;color:#4b6cba}.public-question{max-width:830px}.public-question>header h1{font-size:36px;margin:12px 0 32px;line-height:1.2}.public-exercise{--math-green:#34735d;--math-warm:#a16942}.public-exercise .math-question-card{padding:26px 30px}.public-exercise button,.public-exercise input,.public-exercise textarea,.public-exercise select{font:inherit}.public-exercise button{cursor:pointer}.public-exercise button:disabled{opacity:.6;cursor:default}.public-exercise .text-button{background:none;border:0;color:#4b6cba;font-size:13px;padding:5px 0}.public-exercise .primary{border:0;color:#fff}.public-exercise .secondary{color:#4b6cba;background:#f0f4fb;border:1px solid #dce5f2;border-radius:6px;padding:8px 12px}.public-exercise [hidden]{display:none!important}.public-exercise .math-source{display:block;padding:18px 0 0;margin:24px 0 0;width:100%;border-top:1px solid #e4e8ee}.public-exercise .math-source>p{font-size:11px}.public-exercise .math-answer-form textarea{max-width:100%;box-sizing:border-box}.public-exercise .math-text .katex{font-size:1.08em}.public-exercise .math-feedback{margin-top:20px}.public-exercise .public-result{font-size:14px;line-height:1.7;margin:18px 0 0}.public-exercise .public-result.correct{color:#34735d}.public-exercise .public-result.incorrect,.public-error{color:#a16942}.public-manual{font-size:13px;color:#6c7d94}.public-next{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin:30px 0}.public-exercise .math-source-properties ul{padding:0;list-style:none}.public-exercise .math-source-properties p{margin-top:0}.public-exercise .bio-table-wrap{overflow-x:auto;max-width:100%}.public-exercise fieldset{min-width:0}.public-exercise .bio-diagram{margin-inline:0}.public-exercise .bio-diagram img{max-width:100%}.public-exercise svg{max-width:100%}.public-question .public-exercise h2{font-size:24px}.public-question .public-exercise h3{font-size:19px}.public-question .public-exercise h4{font-size:16px}.public-question .math-answer,.public-question .solution-steps .math-text{font-size:16px}.public-question .public-exercise .criteria-table .math-text{font-size:14px}
@media(max-width:800px){.public-number-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:600px){.public-number-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.public-number-grid>a{padding:13px;gap:4px 6px}.public-number-grid span{font-size:12px}.public-task-row{padding:17px 13px;gap:10px}.public-task-row strong{font-size:15px}.public-task-preview{font-size:12px}.public-question>header h1{font-size:28px}.public-exercise .math-question-card,.public-exercise .math-feedback{padding:20px 17px}.public-exercise .math-problem{font-size:15px}.public-question .solution-steps .math-text{font-size:15px}.public-exercise .bio-match{display:block}.public-exercise .math-form-actions{gap:15px}.public-next{gap:18px}.public-task-number{width:23px}.public-exercise .math-answer-form>input{width:100%;max-width:290px;box-sizing:border-box}}

.share-card{padding:24px;border:1px solid #e0e6ee;border-radius:10px;background:#fff}.share-card h3{margin:0 0 10px;font-size:22px}.share-card p{font-size:14px;color:#637187}.share-card .actions{gap:15px}.share-card .text-button{padding:8px 0;background:none;border:0;color:#4b6cba;font:inherit;font-size:12px;cursor:pointer}.copy-status{overflow-wrap:anywhere}.copy-status:empty{display:none}.share-preview{display:block;width:100%;max-width:600px;height:auto;margin:25px 0;border:1px solid #e4e8ee;border-radius:8px}