:root{color:#263a32;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--paper:#fff;--bg:#f7f6f2;--ink:#263a32;--muted:#748078;--line:#e5e8df;--soft:#f2f4ee;--red:#b54736;--blush:#fcf0e9;--green:#39745b;--mint:#edf5ef;--warm:#fbf5e8;--gold:#956c26;background:#f7f6f2;font-family:Inter,-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,sans-serif;font-size:14px;line-height:1.65}*{box-sizing:border-box}body,h1,h2,h3,p{margin:0}h1{letter-spacing:-.8px;font-size:30px;font-weight:650;line-height:1.4}h2{font-size:17px;font-weight:600;line-height:1.5}h3{font-size:14px;font-weight:600}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}input,select,textarea{border:1px solid var(--line);background:var(--paper);width:100%;min-width:0;color:var(--ink);border-radius:8px;padding:11px 12px;font-size:14px;line-height:1.5;transition:border-color .15s}input::placeholder,textarea::placeholder{color:#8f9992}textarea{resize:vertical;min-height:112px;line-height:1.9}input:focus,textarea:focus,select:focus{border-color:var(--red)}:focus-visible{outline-offset:3px;outline:3px solid #cc806b}svg{vertical-align:middle;flex-shrink:0}.number,strong{font-variant-numeric:tabular-nums}#root{flex-direction:column;min-height:100dvh;display:flex}.button{border:1px solid var(--line);background:var(--paper);min-height:41px;color:var(--ink);white-space:nowrap;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:10px 15px;font-size:13px;font-weight:500;line-height:1.4;transition:background .15s,transform .15s;display:inline-flex}.button:hover:not(:disabled){background:#f1f3ed}.button.primary{background:var(--red);color:#fff8f3;border-color:var(--red)}.button.primary:hover:not(:disabled){background:#9d392a}.button.small{min-height:34px;padding:7px 11px;font-size:12px}.button.ghost{color:var(--muted);background:0 0;border-color:#0000}.button.ghost:hover{background:var(--soft)}.button.icon-button{min-width:35px;padding:8px}.button.full{width:100%;min-height:46px;margin-top:22px}.text-button{color:var(--red);background:0 0;border:0;min-height:36px;padding:5px 0;font-size:12px}.text-button:hover{text-decoration:underline}.actions{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.muted{color:var(--muted)}.tiny{color:var(--muted);font-size:11px;line-height:1.8}.spaced{margin-top:20px}.stack{flex-direction:column;gap:22px;min-width:0;display:flex}.card{background:var(--paper);border:1px solid var(--line);border-radius:13px;min-width:0;padding:25px}.section-heading{justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px;display:flex}.section-heading.compact{margin-bottom:5px}.section-heading h2{align-items:center;gap:10px;display:flex}.section-heading h2 svg{width:19px;height:19px;color:var(--red)}.pill{white-space:nowrap;border-radius:24px;align-items:center;gap:6px;padding:4px 10px;font-size:11px;font-weight:500;line-height:1.5;display:inline-flex}.pill.good{background:var(--mint);color:var(--green)}.pill.bad{background:var(--blush);color:var(--red)}.pill.neutral{background:var(--soft);color:var(--muted)}.pill.warm{background:var(--warm);color:var(--gold)}.status-dot{background:currentColor;border-radius:50%;width:6px;height:6px;display:inline-block}.alert{background:var(--blush);color:#a13e2e;overflow-wrap:anywhere;border-radius:9px;align-items:flex-start;gap:10px;margin:14px 0;padding:13px 15px;font-size:13px;display:flex}.alert svg{margin-top:3px}.alert.success-alert{background:var(--mint);color:var(--green)}.loading{color:var(--muted);justify-content:center;align-items:center;gap:10px;padding:65px 20px;font-size:13px;display:flex}.spin{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;max-width:800px;margin:0 auto;padding:64px 22px}.empty-state>svg{color:var(--muted);margin-bottom:16px}.empty-state h2{font-size:18px}.empty-state p{color:var(--muted);overflow-wrap:anywhere;margin:9px 0 22px;font-size:13px}.empty-state h1{font-size:25px}.app-header{background:var(--paper);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:20px;min-height:87px;padding:22px max(28px,50vw - 630px);display:flex}.brand{align-items:center;gap:11px;width:max-content;display:flex}.brand-mark{background:var(--red);color:#fff6eb;border-radius:12px;place-items:center;width:39px;height:39px;display:grid}.brand strong{letter-spacing:3px;font-size:23px;line-height:1.1;display:block}.brand small{letter-spacing:2px;color:var(--muted);margin-top:5px;font-size:8px;font-weight:600;display:block}.header-right{color:var(--muted);align-items:center;gap:22px;font-size:12px;display:flex}.class-chip{background:var(--soft);color:var(--ink);white-space:nowrap;border-radius:30px;align-items:center;gap:6px;padding:7px 13px;display:flex}.app-footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;gap:15px;padding:20px max(28px,50vw - 630px);font-size:11px;display:flex}.app-footer span:first-child{letter-spacing:1px}.student-main{flex:1;width:100%;max-width:1176px;margin:0 auto;padding:30px 28px 45px}.breadcrumb{color:var(--muted);flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:20px;font-size:12px;display:flex}.breadcrumb span{overflow-wrap:anywhere}.breadcrumb a:hover{color:var(--red)}.stepper{color:var(--muted);align-items:center;gap:19px;margin-bottom:25px;font-size:12px;display:flex}.stepper>span{white-space:nowrap;align-items:center;gap:7px;display:flex}.stepper b{border:1px solid var(--line);background:var(--paper);border-radius:50%;place-items:center;width:23px;height:23px;font-size:10px;font-weight:500;display:grid}.stepper>i{background:var(--line);width:35px;height:1px}.stepper .active{color:var(--red)}.stepper .active b{color:#fff7ee;background:var(--red);border-color:var(--red)}.task-hero{background:var(--blush);border:1px solid #f2e1d5;border-radius:15px;justify-content:space-between;align-items:center;gap:20px;margin-bottom:25px;padding:30px;display:flex;overflow:hidden}.eyebrow{letter-spacing:2px;color:var(--red);align-items:center;gap:10px;margin-bottom:13px;font-size:11px;font-weight:600;display:flex}.eyebrow .pill{letter-spacing:0;background:var(--paper)}.eyebrow.quiet{color:var(--muted);letter-spacing:1.5px;margin-bottom:7px;font-size:10px}.task-hero h1{font-size:32px}.task-hero p{color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere;max-width:680px;margin-top:12px;font-size:13px;line-height:1.95}.envelope-scene{flex-shrink:0;width:165px;height:140px;position:relative}.envelope{background:#c7503b;border:1px solid #b14231;border-radius:11px;width:109px;height:95px;position:absolute;top:31px;left:23px;overflow:hidden;transform:rotate(-13deg);box-shadow:9px 12px #ab3f250c}.envelope:before{content:"";background:#df6e53;border-bottom:2px solid #efa18b;border-radius:0 0 65% 65%;height:100px;position:absolute;top:-42px;left:-3px;right:-3px}.envelope-coin{color:#945429;background:#f2d5a1;border:3px solid #f9e8c2;border-radius:50%;place-items:center;width:36px;height:36px;font-size:22px;display:grid;position:absolute;top:75px;left:61px;transform:rotate(-13deg)}.luck-ticket{color:#ab5a36;letter-spacing:1px;background:#fff6e4;border:1px solid #edd7b7;border-radius:4px;padding:4px 12px;font-size:10px;position:absolute;top:9px;left:72px;transform:rotate(14deg)}.spark{color:#c98d43;font-size:23px;position:absolute}.spark-a{top:10px;left:3px}.spark-b{font-size:16px;top:60px;right:5px}.student-workspace{grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);align-items:start;gap:24px;display:grid}.rules-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:9px;margin-bottom:22px;display:grid}.rules-grid>div{background:var(--soft);text-align:center;border-radius:9px;padding:15px 7px}.rules-grid small{color:var(--muted);margin-bottom:6px;font-size:11px;display:block}.rules-grid strong{letter-spacing:-1px;font-size:26px;font-weight:600}.rules-grid span{margin-left:3px;font-size:11px}.rules-grid em{font-size:16px;font-style:normal}.rules-grid .key-rule{background:var(--blush);color:var(--red)}.prize-row{border-top:1px solid var(--line);justify-content:space-between;align-items:center;gap:10px;padding:13px 0;font-size:13px;display:flex}.prize-row>span{flex-wrap:wrap;align-items:center;gap:9px;min-width:0;display:flex}.prize-row b{white-space:nowrap;font-size:14px;font-weight:600}.prize-icon{background:var(--soft);width:29px;height:29px;color:var(--muted);border-radius:8px;place-items:center;display:grid}.prize-icon.warm{background:var(--warm);color:var(--gold)}.note{color:var(--muted);border-top:1px dashed var(--line);align-items:flex-start;gap:9px;margin-top:19px;padding-top:17px;font-size:12px;display:flex}.note svg{margin-top:3px}.challenge{gap:14px;margin-top:19px;display:flex}.challenge>span{color:var(--red);margin-top:1px;font-size:12px;font-weight:600}.challenge h3{font-size:14px}.challenge p{color:var(--muted);margin-top:5px;font-size:12px;line-height:1.9}.field{flex-direction:column;gap:8px;min-width:0;font-size:12px;font-weight:500;display:flex}.field-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px;display:grid}.input-unit{display:block;position:relative}.input-unit input{font-variant-numeric:tabular-nums;padding-right:37px}.input-unit>span{color:var(--muted);pointer-events:none;font-weight:400;position:absolute;top:13px;right:12px}.divider-label{letter-spacing:1px;color:var(--muted);align-items:center;gap:12px;margin:24px 0 17px;font-size:11px;display:flex}.divider-label:after{content:"";background:var(--line);flex:1;height:1px}.calculation-fields{grid-template-columns:1fr 1fr 1.1fr;gap:10px;margin:19px 0 22px;display:grid}.calculation-fields .field{font-size:11px}.field-help{color:var(--muted);justify-content:space-between;gap:10px;margin-top:6px;font-size:11px;display:flex}.form-foot{text-align:center;color:var(--muted);margin-top:12px;font-size:11px}.result-wrap{max-width:780px;margin:0 auto}.result-heading{text-align:center;padding:20px 0 30px}.result-stamp{background:var(--mint);width:64px;height:64px;color:var(--green);border-radius:50%;place-items:center;margin:0 auto 20px;display:grid;box-shadow:0 0 0 8px #edf5ef80}.result-heading h1{font-size:28px}.result-heading p{color:var(--muted);margin-top:9px;font-size:13px}.result-heading.not-correct .result-stamp{background:var(--blush);color:var(--red);box-shadow:0 0 0 8px #fcf0e980}.result-meta{border-bottom:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:20px;font-size:14px;display:flex}.result-metrics{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:17px 0 25px;display:grid}.result-metrics>div{background:var(--soft);border-radius:10px;min-width:0;padding:16px}.result-metrics small{color:var(--muted);margin-bottom:3px;font-size:11px;display:block}.result-metrics strong{letter-spacing:-.7px;font-size:27px;font-weight:600}.result-metrics span{margin-left:3px;font-size:12px}.result-metrics p{color:var(--muted);margin-top:4px;font-size:11px}.check-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:flex-start;gap:12px;padding:15px 0;display:flex}.check-row:last-child{border:0;padding-bottom:0}.check-text{align-items:flex-start;gap:11px;min-width:0;display:flex}.check-text>svg{color:var(--green);margin-top:3px}.check-text.failed>svg{color:var(--red)}.check-text h3{font-size:13px}.check-text p{color:var(--muted);overflow-wrap:anywhere;margin-top:4px;font-size:12px;line-height:1.85}.check-row .pill{flex-shrink:0}.result-extra{margin-top:20px}.reason-block{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--soft);border-radius:8px;margin:13px 0 10px;padding:16px;font-size:13px;line-height:1.9}.teacher-feedback{border-top:1px solid var(--line);margin-top:18px;padding-top:18px}.teacher-feedback p{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--green);margin-top:8px;font-size:13px}.result-actions{flex-wrap:wrap;justify-content:center;gap:12px;margin-top:25px;display:flex}.submitted-calculation{background:var(--blush);color:var(--red);border-radius:8px;margin-top:18px;padding:12px 14px;font-size:12px}.teacher-shell{flex:1;grid-template-columns:194px minmax(0,1fr);width:100%;max-width:1440px;margin:0 auto;display:grid}.sidebar{background:var(--paper);border-right:1px solid var(--line);flex-direction:column;gap:6px;padding:30px 18px;display:flex}.sidebar-label{letter-spacing:1.5px;color:var(--muted);padding:0 13px 16px;font-size:10px}.nav-item{color:var(--muted);border-radius:9px;align-items:center;gap:12px;padding:13px;font-size:14px;display:flex}.nav-item.active{background:var(--blush);color:var(--red);font-weight:600}.nav-item:hover{background:var(--soft)}.nav-item.active:hover{background:var(--blush)}.sidebar-bottom{color:var(--muted);margin-top:auto;padding:35px 12px 0;font-size:12px}.sidebar-bottom>svg{margin-bottom:8px}.sidebar-bottom .button{margin:22px 0 0 -8px;padding-left:8px;font-size:12px}.teacher-main{min-width:0;padding:32px 32px 40px}.page-top{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:18px;margin-bottom:26px;display:flex}.page-top h1{font-size:27px}.page-top>div>p:not(.eyebrow){color:var(--muted);margin-top:6px;font-size:13px}.page-top .breadcrumb{margin-bottom:7px;font-size:11px}.question-list{flex-direction:column;gap:20px;display:flex}.question-card{background:var(--paper);border:1px solid var(--line);border-radius:13px;padding:25px}.question-card-top{justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;display:flex}.question-card h2{overflow-wrap:anywhere;font-size:20px}.question-description{color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere;margin-top:8px;font-size:13px}.question-rules{color:var(--muted);border-top:1px solid var(--line);border-bottom:1px solid var(--line);flex-wrap:wrap;gap:24px;margin:20px 0;padding:17px 0;font-size:12px;display:flex}.question-rules b{color:var(--ink);margin-left:4px;font-weight:500}.question-bottom{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:15px;display:flex}.question-bottom .tiny p{margin-top:3px;font-size:10px}.editor-grid{grid-template-columns:minmax(0,1fr) 230px;align-items:start;gap:24px;display:grid}.editor-aside{background:var(--blush);color:var(--muted);border-radius:11px;padding:22px;font-size:12px;line-height:1.95}.editor-aside h3{color:var(--red);align-items:center;gap:8px;margin-bottom:13px;display:flex}.editor-aside>div{color:var(--ink);align-items:center;gap:7px;margin-top:13px;display:flex}.editor-aside>div>svg{color:var(--green)}.editor-aside>p:last-child{margin-top:14px}.editor-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:25px;display:flex}.summary-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:15px;margin-bottom:25px;display:grid}.summary-card{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:21px}.summary-card>div{color:var(--muted);justify-content:space-between;align-items:center;gap:6px;display:flex}.summary-card small{font-size:12px}.summary-card strong{margin-top:10px;font-size:34px;font-weight:600;line-height:1.3;display:block}.summary-card strong span{color:var(--muted);margin-left:5px;font-size:13px;font-weight:400}.summary-card p{color:var(--muted);margin-top:10px;font-size:11px}.summary-card.accent{background:var(--mint);border-color:#0000}.summary-card.accent strong{color:var(--green)}.question-selector{max-width:520px;margin-bottom:20px}.table-box{background:var(--paper);border:1px solid var(--line);border-radius:12px;overflow:hidden}.table-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:19px 21px;display:flex}.table-heading h2{overflow-wrap:anywhere;font-size:15px}.table-toolbar{border-bottom:1px solid var(--line);flex-wrap:wrap;align-items:center;gap:12px;padding:17px 20px;display:flex}.search-field{flex:1;min-width:160px;position:relative}.search-field svg{color:var(--muted);position:absolute;top:14px;left:12px}.search-field input{padding-left:37px}.table-toolbar select{width:auto;max-width:100%;font-size:13px}.table-scroll{overflow-x:auto}table{border-collapse:collapse;white-space:nowrap;text-align:left;width:100%;font-size:12px}th{background:var(--soft);color:var(--muted);padding:13px 16px;font-size:11px;font-weight:500}td{border-bottom:1px solid var(--line);padding:17px 16px}td strong{white-space:normal;overflow-wrap:anywhere;max-width:150px;font-weight:600;display:block}td small{color:var(--muted);margin-top:3px;font-size:10px;display:block}.record-date{font-size:11px}tbody tr:last-child td{border:0}tbody tr:hover{background:#fafbf7}.table-footer{border-top:1px solid var(--line);color:var(--muted);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:15px 20px;font-size:11px;display:flex}.pagination{align-items:center;gap:12px;display:flex}.access-page{text-align:center;flex:1;width:100%;max-width:560px;margin:0 auto;padding:75px 28px}.access-icon{width:65px;height:65px;color:var(--red);background:var(--blush);border-radius:20px;place-items:center;margin:0 auto 24px;display:grid}.access-page h1{font-size:26px}.access-page>p{color:var(--muted);margin:14px 0 25px;font-size:14px;line-height:1.9}.access-page .alert{text-align:left}.modal-dialog,.drawer-dialog{color:var(--ink);background:var(--paper);border:1px solid var(--line);padding:26px;box-shadow:0 20px 80px #13251c25}.modal-dialog{border-radius:15px;width:min(480px,100vw - 32px);max-height:calc(100dvh - 40px)}.drawer-dialog{border:0;border-left:1px solid var(--line);border-radius:0;width:min(610px,100vw);max-width:100vw;height:100dvh;max-height:100dvh;margin:0;position:fixed;inset:0 0 0 auto;overflow-y:auto}.modal-dialog::backdrop,.drawer-dialog::backdrop{background:#14221c70}.dialog-heading{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;padding-bottom:19px;display:flex}.dialog-heading h2{font-size:21px}.dialog-heading .icon-button{flex-shrink:0}.dialog-description{color:var(--muted);font-size:14px;line-height:1.9}.dialog-actions{flex-wrap:wrap;justify-content:flex-end;gap:10px;margin-top:22px;display:flex}.detail-timestamp{margin:-8px 0 22px}.detail-identity{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;display:flex}.person{align-items:center;gap:11px;display:flex}.person p{color:var(--muted);margin-top:2px;font-size:12px}.avatar{background:var(--soft);color:var(--green);border-radius:10px;place-items:center;width:41px;height:41px;font-size:18px;font-weight:600;display:grid}.detail-tabs{border-bottom:1px solid var(--line);gap:25px;margin:23px 0;display:flex}.detail-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:2px solid #0000;padding:8px 0 13px;font-size:13px}.detail-tabs button[aria-pressed=true]{border-color:var(--red);color:var(--red)}.detail-prizes{background:var(--soft);border-radius:9px;justify-content:space-between;gap:15px;padding:15px 17px;font-size:13px;display:flex}.detail-prizes b{margin-left:5px;font-size:20px}.drawer-dialog .result-metrics{gap:9px;margin:15px 0 23px}.drawer-dialog .result-metrics>div{padding:13px}.drawer-dialog .result-metrics strong{font-size:25px}.drawer-dialog .result-metrics p{font-size:10px}.drawer-dialog .check-text p{font-size:11px}.drawer-dialog .check-text h3{font-size:12px}.drawer-dialog .check-row{padding:13px 0}.feedback-section{border-top:1px solid var(--line);margin-top:24px;padding-top:21px}.history-item{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:15px;padding:19px 0;display:flex}.history-item p{color:var(--muted);margin-top:6px;font-size:12px}.history-item>div:last-child{flex-direction:column;flex-shrink:0;align-items:flex-end;display:flex}.history-item h3 .pill{margin-left:5px}@media (width>=1600px){.teacher-shell{border-left:1px solid var(--line);border-right:1px solid var(--line)}}@media (width<=1100px){.teacher-shell{grid-template-columns:174px minmax(0,1fr)}.teacher-main{padding:28px 25px}.sidebar{padding-left:12px;padding-right:12px}.editor-grid{grid-template-columns:minmax(0,1fr) 200px;gap:18px}.editor-aside{padding:18px}.student-workspace{gap:20px}.student-workspace .card{padding:22px}.rules-grid strong{font-size:24px}.calculation-fields{gap:7px}.calculation-fields input{padding-left:9px}.task-hero p{max-width:570px}}@media (width<=900px){.editor-grid{grid-template-columns:1fr}.editor-aside{display:none}.teacher-shell{grid-template-columns:155px minmax(0,1fr)}.teacher-main{padding:25px 20px}.nav-item{gap:9px;padding:11px;font-size:13px}.sidebar{padding-left:9px;padding-right:9px}.summary-grid{gap:11px}.summary-card{padding:16px}.summary-card p{font-size:10px}.summary-card strong{font-size:30px}.summary-card>div>svg{display:none}.task-hero h1{font-size:29px}.envelope-scene{width:135px}.student-workspace{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:17px}.student-workspace .card{padding:19px}.prize-row{font-size:12px}.prize-row b{font-size:13px}.calculation-fields{grid-template-columns:1fr 1fr}.calculation-fields>.field:last-child{grid-column:1/-1}.rules-grid strong{font-size:21px}.rules-grid>div{padding:13px 4px}.rules-grid small{font-size:10px}}@media (width<=720px){.student-workspace{grid-template-columns:1fr;gap:22px}.student-main{padding:25px 20px 35px}.student-workspace .card{padding:23px}.calculation-fields{grid-template-columns:1fr 1fr 1.1fr;gap:10px}.calculation-fields>.field:last-child{grid-column:auto}.rules-grid>div{padding:17px 7px}.rules-grid strong{font-size:28px}.rules-grid small{font-size:12px}.envelope-scene{display:none}.task-hero{padding:25px}.task-hero h1{font-size:27px}.task-hero p{max-width:none}.header-motto{display:none}.app-header{min-height:80px;padding:19px 21px}.app-footer{padding:19px 21px}.teacher-shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--line);flex-direction:row;align-items:center;gap:8px;padding:10px 18px}.sidebar-label{display:none}.sidebar-bottom{margin:0 0 0 auto;padding:0}.sidebar-bottom>svg,.sidebar-bottom>p{display:none}.sidebar-bottom .button{gap:0;min-width:36px;min-height:36px;margin:0;padding:8px;font-size:0}.sidebar-bottom .button svg{width:17px;height:17px}.nav-item{padding:10px 13px;font-size:13px}.teacher-main{padding:25px 20px 35px}.page-top{gap:16px}.page-top h1{font-size:26px}.question-card{padding:22px}.drawer-dialog .result-metrics strong{font-size:25px}.question-description{font-size:12px}.question-bottom .actions{gap:7px}.summary-card strong{font-size:28px}}@media (width<=480px){input,select,textarea{font-size:16px}.button{min-height:44px;font-size:13px}.button.small{min-height:39px}.button.icon-button{min-width:39px}.text-button{min-height:40px}.student-main{padding:23px 17px 30px}.student-workspace .card,.card{padding:20px}.student-workspace .stack,.student-workspace{gap:19px}.app-header{gap:10px;padding:18px}.brand-mark{border-radius:11px;width:36px;height:36px}.brand strong{font-size:22px}.brand small{letter-spacing:1.7px;font-size:7px}.class-chip{padding:7px 10px;font-size:11px}.header-right{gap:0}.app-footer{padding:17px 18px;font-size:10px}.breadcrumb{margin-bottom:19px;font-size:11px}.stepper{gap:8px;margin-bottom:22px;font-size:11px}.stepper>i{width:17px}.stepper>span{gap:5px}.stepper b{width:21px;height:21px;font-size:9px}.task-hero{margin-bottom:21px;padding:24px 21px}.task-hero h1{letter-spacing:-.6px;font-size:25px}.task-hero p{font-size:12px}.eyebrow{letter-spacing:1px;gap:8px;font-size:10px}.rules-grid{gap:8px}.rules-grid strong{font-size:25px}.rules-grid small{font-size:11px}.rules-grid span{font-size:10px}.prize-row{gap:8px;font-size:12px}.prize-row>span{gap:7px}.prize-row b{font-size:12px}.prize-row .pill{padding:3px 7px;font-size:10px}.section-heading{margin-bottom:19px}.section-heading h2{font-size:16px}.section-heading .tiny{font-size:10px}.field-grid{gap:12px}.field{font-size:12px}.calculation-fields{gap:8px}.calculation-fields .field{font-size:10px}.calculation-fields input{padding-left:8px;padding-right:27px;font-size:16px}.calculation-fields .input-unit>span{right:9px}.field-help,.form-foot{font-size:10px}.note{font-size:11px}.challenge h3{font-size:13px}.challenge p{font-size:11px}.result-heading{padding:16px 0 26px}.result-heading h1{font-size:23px}.result-heading p{font-size:12px}.result-meta{font-size:13px}.result-metrics{gap:8px}.result-metrics>div{padding:12px 9px}.result-metrics strong{font-size:23px}.result-metrics span{margin-left:2px;font-size:10px}.result-metrics p,.result-metrics small{font-size:10px}.check-text{gap:8px}.check-text p{font-size:11px}.check-text h3{font-size:12px}.check-row .pill{padding:4px 8px;font-size:10px}.check-row{gap:8px}.teacher-main{padding:24px 17px 30px}.page-top h1{font-size:25px}.page-top>div>p:not(.eyebrow){font-size:12px}.summary-grid{gap:8px;margin-bottom:21px}.summary-card{padding:13px 10px}.summary-card strong{font-size:26px}.summary-card strong span{margin-left:2px;font-size:11px}.summary-card small{font-size:10px}.summary-card p{margin-top:7px;font-size:9px}.table-toolbar{gap:9px;padding:13px}.search-field{flex-basis:100%}.table-toolbar select{flex:1;min-width:0;font-size:13px}.table-heading{padding:17px}.table-heading h2{font-size:14px}.table-footer{padding:14px 16px}.question-card{padding:19px}.question-card h2{font-size:18px}.question-rules{gap:10px 18px;font-size:11px}.question-bottom{gap:17px}.question-bottom .actions{width:100%}.question-bottom .button.small{padding:8px;font-size:11px}.question-bottom .button svg{width:13px;height:13px}.question-bottom .actions>.button{flex:1}.modal-dialog,.drawer-dialog{padding:22px 18px}.dialog-heading h2{font-size:20px}.dialog-description{font-size:13px}.drawer-dialog .result-metrics>div{padding:12px 9px}.drawer-dialog .result-metrics strong{font-size:23px}.drawer-dialog .result-metrics p{font-size:9px}.drawer-dialog .result-metrics small{font-size:10px}.drawer-dialog .check-row{gap:6px}.detail-prizes{font-size:12px}.history-item{gap:10px}.history-item p{font-size:11px}.access-page{padding:65px 22px}.access-page h1{font-size:23px}.access-page>p{font-size:13px}.editor-actions .button{padding:10px 12px;font-size:12px}}@media (width<=360px){.student-main,.teacher-main{padding-left:13px;padding-right:13px}.card,.student-workspace .card{padding:17px}.rules-grid strong{font-size:23px}.rules-grid small{font-size:10px}.calculation-fields{grid-template-columns:1fr 1fr}.calculation-fields>.field:last-child{grid-column:1/-1}.stepper{gap:5px;font-size:10px}.stepper>i{width:9px}.stepper>span{gap:4px}.task-hero{padding:21px 18px}.task-hero h1{font-size:23px}.prize-row>span{gap:5px}.prize-icon{width:24px;height:26px}.prize-row .pill{padding:3px 5px}.prize-row b{font-size:11px}.summary-card strong{font-size:24px}.summary-card p{display:none}.summary-card small{font-size:9px}.sidebar{gap:4px;padding-left:12px;padding-right:12px}.nav-item{padding:10px;font-size:12px}.app-header{padding-left:15px;padding-right:15px}.class-chip{font-size:10px}.result-metrics strong,.drawer-dialog .result-metrics strong{font-size:20px}.result-metrics span{font-size:9px}.result-actions{gap:8px}.result-actions .button{font-size:12px}}@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.review-pending .result-stamp{color:var(--gold);background:var(--warm);box-shadow:0 0 0 8px #fbf5e880}.student-answer-values{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0 24px;display:grid}.student-answer-values>div{background:var(--soft);overflow-wrap:anywhere;border-radius:9px;min-width:0;padding:15px}.student-answer-values small{color:var(--muted);font-size:11px;display:block}.student-answer-values strong{font-size:25px;font-weight:600}.student-answer-values span{margin-left:3px;font-size:12px}input[readonly]{background:var(--soft)}@media (width<=480px){.student-answer-values{gap:8px}.student-answer-values>div{padding:12px 9px}.student-answer-values strong{font-size:21px}.student-answer-values small,.student-answer-values span{font-size:10px}}.student-login-main{flex:1;justify-content:center;align-items:flex-start;width:100%;padding:54px 20px 65px;display:flex}.student-login-card{background:var(--paper);border:1px solid var(--line);border-radius:17px;width:min(460px,100%);padding:35px;box-shadow:0 14px 45px #263a3205}.login-symbol{width:59px;height:59px;color:var(--red);background:var(--blush);border-radius:18px;place-items:center;margin-bottom:24px;display:grid}.student-login-card h1{font-size:29px}.student-login-card .eyebrow{margin-bottom:8px;font-size:10px}.login-intro{color:var(--muted);margin:11px 0 28px;font-size:13px}.student-login-card .field{gap:7px}.student-login-card .field>.tiny,.student-login-card .field>.required-mark{margin-top:-6px;font-size:11px;font-weight:400}.required-mark{color:var(--red)}.login-hint{border-top:1px solid var(--line);color:var(--muted);margin-top:23px;padding-top:19px;font-size:12px;line-height:1.85}.student-header-actions{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:20px;min-width:0;display:flex}.student-identity{color:var(--green);background:var(--mint);overflow-wrap:anywhere;border-radius:9px;align-items:center;gap:7px;min-width:0;max-width:340px;padding:8px 11px;font-size:12px;display:flex}.student-nav{align-items:center;gap:19px;font-size:13px;display:flex}.student-nav>a:hover{color:var(--red)}.student-session-card{background:var(--soft);overflow-wrap:anywhere;border-radius:9px;flex-wrap:wrap;justify-content:space-between;gap:12px;margin-bottom:20px;padding:13px 14px;font-size:12px;display:flex}.own-task-status h3{margin-top:23px;font-size:17px}.own-task-status>p{color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere;margin-top:10px;font-size:13px;line-height:1.9}@media (width<=720px){.student-header{flex-wrap:wrap}.student-header-actions{flex:1;gap:13px}.student-nav{gap:15px;font-size:12px}.student-identity{max-width:100%}}@media (width<=480px){.student-login-main{padding:30px 17px 40px}.student-login-card{padding:26px 22px}.student-header-actions{flex-basis:100%;justify-content:space-between}.student-nav{justify-content:space-between;gap:12px;width:100%}.student-identity{padding:7px 10px;font-size:11px}.student-login-card h1{font-size:26px}}