:root{
  --side:#fff;
  --side-2:#f5f8f6;
  --side-ink:#33413b;
  --side-dim:#6b7872;
  --bg:#fff;
}
body{background:#fff}
.side{background:#fff;color:var(--ink);border-right:1px solid var(--hair);scrollbar-color:#cbd5cf transparent}
.side::-webkit-scrollbar-thumb{background:#cbd5cf}
.s-brand .bn,.s-id .nm{color:var(--ink)}
.s-brand .br{color:var(--acc-ink)}
.s-id{background:var(--side-2);border:1px solid var(--hair);border-radius:8px}
.s-id select,.s-key .kform input{background:#fff;color:var(--ink);border-color:#cfd8d3}
.s-id .warnlink,.s-id .warnlink a{color:var(--bad)}
.s-nav .it:hover,.s-nav .it.sub:hover{background:var(--side-2);color:var(--ink)}
.s-nav .it.sub.on{background:var(--acc-soft);color:var(--acc-ink)}
.s-nav a.it{color:var(--side-dim)}
.s-nav a.it:hover{color:var(--ink)}
.s-key{border-top-color:var(--hair)}
.s-key .kbtn.ai-connected{color:var(--acc-ink)}
.s-key .kst.ok{color:var(--ok)}
.toast{background:#fff;color:var(--ink);border:1px solid var(--hair);box-shadow:0 10px 28px rgba(31,45,38,.16)}
.toast.ok svg{color:var(--ok)}.toast.err svg{color:var(--bad)}.toast.ai svg{color:#6d28d9}.toast.info svg{color:#2563eb}
.main{width:100%;max-width:1280px}
.workflow-bar{display:grid;grid-template-columns:minmax(190px,2fr) repeat(3,minmax(120px,1fr)) auto;gap:8px;padding:14px 0;border-bottom:1px solid var(--hair)}
.workflow-results{border-bottom:1px solid var(--hair)}
.workflow-results:empty{display:none}
.workflow-results .row{padding-left:2px;padding-right:2px}
.task-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px;padding:14px 0}
.task-fields .wide{grid-column:1/-1}
.field-row{display:flex;flex-direction:column;gap:6px;min-width:0}
.field-row>span{font-size:12px;font-weight:750;color:var(--ink2)}
.field-row select[multiple]{min-height:104px}
.item-config{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto auto;gap:10px;align-items:center;width:100%}
.item-title{min-width:0}
.item-meta{font-size:11.5px;color:var(--mut);margin-top:2px;white-space:normal}
.check-control{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--ink2);white-space:nowrap}
.check-control input{accent-color:var(--acc)}
.points-input{width:72px;padding:7px 8px;text-align:right}
.minute-control{display:inline-flex;align-items:center;gap:5px;font-size:11.5px;color:var(--mut);white-space:nowrap}
.minutes-input{width:62px;padding:7px 8px;text-align:right}
.task-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.task-actions select{width:auto;min-width:150px}
.task-meta-line{display:flex;gap:8px 14px;align-items:center;flex-wrap:wrap;font-size:12px;color:var(--mut);padding:8px 0}
.status-pill{display:inline-flex;align-items:center;gap:6px;padding:3px 8px;border-radius:6px;background:color-mix(in srgb,var(--state,#64748b) 10%,#fff);color:var(--state,#64748b);font-size:11px;font-weight:800;white-space:nowrap}
.status-pill::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.state-strip{display:flex;gap:8px 16px;align-items:center;flex-wrap:wrap;padding:14px 0;border-bottom:1px solid var(--hair)}
.state-stat{display:flex;align-items:baseline;gap:5px;color:var(--mut);font-size:12px}
.state-stat b{font-family:var(--mono);font-size:18px;color:var(--ink)}
.data-head,.student-data-row{display:grid;grid-template-columns:minmax(160px,1.3fr) 120px minmax(150px,1fr) 95px minmax(180px,1.2fr) auto;gap:12px;align-items:center}
.data-head{padding:10px 4px;border-bottom:1.5px solid var(--ink);font-size:11px;font-weight:800;color:var(--mut)}
.student-data-row{padding:11px 4px;border-bottom:1px solid var(--hair-2)}
.student-data-row:hover{background:var(--hov)}
.student-data-row .name{font-weight:750}
.student-data-row .sub{font-size:11.5px;color:var(--mut);margin-top:2px}
.student-data-row .ops{display:flex;gap:6px;justify-content:flex-end}
.resource-metric{display:grid;grid-template-columns:minmax(190px,1.5fr) repeat(4,minmax(70px,.5fr));gap:12px;align-items:center;padding:10px 4px;border-bottom:1px solid var(--hair-2)}
.resource-metric .metric-num{font-family:var(--mono);font-weight:750}
.task-student-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--hair)}
.task-progress{height:7px;background:var(--hair-2);border-radius:4px;overflow:hidden;min-width:110px}
.task-progress i{display:block;height:100%;background:var(--acc)}
dialog.task-preview{width:min(780px,calc(100vw - 32px));max-height:86vh;border:1px solid var(--hair);border-radius:8px;background:#fff;color:var(--ink);padding:0;box-shadow:0 24px 70px rgba(28,45,36,.2)}
dialog.task-preview::backdrop{background:rgba(22,33,28,.2)}
.preview-head{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--hair);position:sticky;top:0;background:#fff}
.preview-body{padding:4px 18px 20px;overflow:auto}
.preview-close{margin-left:auto}
.student-task-meta{display:flex;gap:8px 14px;flex-wrap:wrap;padding:8px 0 12px;color:var(--mut);font-size:12px;border-bottom:1px solid var(--hair)}
.student-item-row{display:grid;grid-template-columns:auto auto minmax(0,1fr) auto auto;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--hair-2)}
.student-item-row .done{width:18px;height:18px;accent-color:var(--acc)}
.student-item-row .item-text{min-width:0}
.student-item-row .item-desc{font-size:11.5px;color:var(--mut)}
.stuck-toggle.on{color:var(--warn);box-shadow:inset 0 0 0 1px var(--warn)}
.submission-box{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:end;padding-top:14px}
.resource-toolbar{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:12px 0;border-bottom:1px solid var(--hair)}
.resource-toolbar>.inp{width:auto;min-width:170px}
.seg.compact{padding:2px;border-radius:7px}
.seg.compact button{padding:6px 10px;font-size:11.5px;white-space:nowrap}
.resource-scope{display:flex;align-items:center;gap:5px;padding:9px 0;border-bottom:1px solid var(--hair);font-size:11.5px;color:var(--mut)}
.resource-scope>button:not(.btn){padding:5px 8px;color:var(--mut);border-bottom:2px solid transparent}
.resource-scope>button:not(.btn).on{color:var(--acc-ink);border-bottom-color:var(--acc);font-weight:800}
.resource-fold{border-bottom:1px solid var(--hair)}
.resource-fold>summary{display:flex;align-items:center;gap:8px;list-style:none;padding:13px 2px;cursor:pointer}
.resource-fold>summary::-webkit-details-marker{display:none}
.resource-fold>summary::before{content:"›";font-family:var(--mono);font-size:17px;line-height:1;color:var(--mut);transform:rotate(0);transition:transform .12s}
.resource-fold[open]>summary::before{transform:rotate(90deg)}
.resource-list-row{display:grid;grid-template-columns:auto auto auto minmax(0,1fr) auto auto;gap:9px;align-items:center;padding:10px 2px;border-top:1px solid var(--hair-2)}
.compare-check{display:flex;align-items:center}
.compare-check input{width:16px;height:16px;accent-color:var(--acc)}
.favorite-toggle{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;color:#7b8791;font-size:18px;line-height:1}
.favorite-toggle.on{color:#b7791f}
.lesson-package{border-top:1.5px solid var(--ink);border-bottom:1px solid var(--hair);margin:10px 0 4px}
.package-head{display:flex;align-items:center;gap:18px;padding:14px 2px;border-bottom:1px solid var(--hair)}
.package-head>div:first-child{display:flex;flex-direction:column;gap:3px;min-width:0}
.package-head strong{font-size:17px}
.package-head span{font-size:11.5px;color:var(--mut)}
.package-total{margin-left:auto;display:flex;align-items:baseline;gap:4px}
.package-total b{font-family:var(--mono);font-size:27px;color:var(--acc-ink)}
.package-timeline{position:relative}
.package-stage{display:grid;grid-template-columns:92px minmax(0,1fr);gap:15px;padding:13px 2px;border-bottom:1px solid var(--hair-2)}
.package-time{display:flex;flex-direction:column;gap:2px;padding-left:14px;position:relative}
.package-time::before{content:"";position:absolute;left:0;top:5px;width:7px;height:7px;border-radius:50%;background:var(--acc)}
.package-time strong{font-family:var(--mono);font-size:13px}
.package-time span{font-size:11px;color:var(--mut)}
.package-items{min-width:0}
.package-item{display:grid;grid-template-columns:auto minmax(0,1fr) auto auto;gap:9px;align-items:center;padding:5px 0}
.package-actions{display:flex;align-items:center;gap:12px;padding:12px 2px}
.package-actions>span{font-family:var(--mono);font-size:12px;color:var(--mut)}
.package-actions .btn{margin-left:auto}
.compare-table{overflow:auto}
.compare-head,.compare-row{display:grid;grid-template-columns:minmax(170px,1.4fr) 70px 75px 80px 120px minmax(180px,1.3fr);gap:10px;align-items:center;min-width:800px;padding:10px 2px}
.compare-head{font-size:11px;font-weight:800;color:var(--mut);border-bottom:1.5px solid var(--ink)}
.compare-row{font-size:12px;border-bottom:1px solid var(--hair-2)}
.compare-row>span:first-child{display:flex;flex-direction:column;gap:2px}
.compare-row small{color:var(--mut)}
.class-pulse{border-top:1.5px solid var(--ink);border-bottom:1px solid var(--hair);margin-top:10px}
.pulse-head{display:flex;align-items:center;gap:12px;padding:12px 2px;border-bottom:1px solid var(--hair)}
.pulse-head>div{display:flex;align-items:baseline;gap:10px}
.pulse-head span{font-family:var(--mono);font-size:11px;color:var(--mut)}
.pulse-head .btn{margin-left:auto}
.pulse-metrics{display:grid;grid-template-columns:repeat(7,minmax(78px,1fr));border-bottom:1px solid var(--hair)}
.pulse-metric{display:flex;flex-direction:column;gap:2px;padding:12px 10px;border-right:1px solid var(--hair-2)}
.pulse-metric:last-child{border-right:none}
.pulse-metric b{font-family:var(--mono);font-size:23px;color:var(--ink)}
.pulse-metric span{font-size:11px;color:var(--mut)}
.pulse-metric.warn b{color:var(--warn)}.pulse-metric.bad b{color:var(--bad)}
.pulse-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(300px,.8fr);gap:26px;padding:14px 2px}
.subhead{font-size:11.5px;font-weight:800;color:var(--ink2);margin-bottom:10px}
.pulse-trend{display:grid;grid-template-columns:repeat(7,minmax(28px,1fr));gap:7px;align-items:end;height:82px}
.trend-day{display:grid;grid-template-rows:52px 14px 14px;align-items:end;text-align:center;min-width:0}
.trend-day i{display:block;width:60%;max-width:24px;margin:0 auto;background:var(--acc);border-radius:2px 2px 0 0}
.trend-day b{font-family:var(--mono);font-size:10px}.trend-day span{font-size:9.5px;color:var(--mut)}
.risk-row{display:grid;grid-template-columns:28px minmax(0,1fr) auto;gap:9px;align-items:center;padding:6px 0;border-bottom:1px solid var(--hair-2)}
.risk-row>span:nth-child(2){display:flex;flex-direction:column;min-width:0}
.risk-row b{font-size:12px}.risk-row small{font-size:10.5px;color:var(--mut);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.risk-score{font-family:var(--mono);font-weight:800;color:var(--bad)}
.stats-detail-bar{display:grid;grid-template-columns:auto minmax(210px,1.2fr) repeat(3,minmax(130px,.7fr)) minmax(150px,.8fr) minmax(110px,.55fr);gap:8px;align-items:center;padding:16px 0 8px}
.stats-detail-bar strong{font-size:13px;white-space:nowrap}
.stats-detail-bar .inp{min-width:0}
.evidence-pill{display:inline-flex;align-items:center;padding:3px 8px;border-radius:6px;background:color-mix(in srgb,var(--evidence,#64748b) 10%,#fff);color:var(--evidence,#64748b);font-size:11px;font-weight:800}
.evidence-ladder{display:grid;grid-template-columns:repeat(6,minmax(72px,1fr));gap:0;padding:12px 0;border-bottom:1px solid var(--hair)}
.evidence-ladder span{display:flex;align-items:center;gap:5px;position:relative;font-size:10.5px;color:var(--mut)}
.evidence-ladder span::after{content:"";position:absolute;left:8px;right:-2px;top:5px;height:1px;background:var(--hair)}
.evidence-ladder span:last-child::after{display:none}
.evidence-ladder i{width:10px;height:10px;border-radius:50%;border:2px solid var(--hair);background:#fff;position:relative;z-index:1}
.evidence-ladder span.on{color:var(--acc-ink);font-weight:750}
.evidence-ladder span.on i{border-color:var(--acc);background:var(--acc)}
.evidence-progress i{background:#0f8a55}
.teacher-actions-feed{padding:9px 0;border-bottom:1px solid var(--hair)}
.teacher-action{padding:10px 0 10px 13px;border-left:3px solid var(--acc);border-bottom:1px solid var(--hair-2)}
.teacher-action:last-child{border-bottom:none}
.teacher-action-head{display:flex;align-items:center;gap:12px}
.teacher-action-head span{margin-left:auto;font-family:var(--mono);font-size:10.5px;color:var(--mut)}
.teacher-action p{margin:5px 0;font-size:12.5px;line-height:1.65}
.teacher-action small{display:block;color:var(--mut);margin-top:4px}
.action-due{font-size:11.5px;color:var(--bad);font-weight:750}
.action-links{display:flex;gap:6px;flex-wrap:wrap;padding:6px 0}
.action-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 18px;padding:10px 0}
.action-fields .field-row:nth-child(2),.action-fields .field-row:nth-child(3){grid-column:1/-1}
.action-resource-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
.action-resource{display:flex;gap:8px;align-items:flex-start;padding:8px 0;border-bottom:1px solid var(--hair-2)}
.action-resource input{margin-top:2px;accent-color:var(--acc)}
.action-resource span{display:flex;flex-direction:column;gap:2px;min-width:0}
.action-resource b{font-size:12px}.action-resource small{font-size:10.5px;color:var(--mut)}
.dialog-actions{display:flex;justify-content:flex-end;padding:12px 0 2px;border-top:1px solid var(--hair)}
@media(max-width:920px){
  .side{border-right:none;border-bottom:1px solid var(--hair)}
  .student-task-page .side{
    display:grid;
    grid-template-columns:auto minmax(0,1fr);
    grid-template-areas:
      "brand identity"
      "flow flow"
      "quick quick"
      "key key";
    align-items:center;
    gap:5px 10px;
    overflow:visible;
    padding:8px 10px 6px;
  }
  .student-task-page .s-brand{grid-area:brand;padding:4px 0}
  .student-task-page .s-brand .bn,
  .student-task-page .s-brand .br{display:none}
  .student-task-page .s-id{
    grid-area:identity;
    display:grid;
    grid-template-columns:auto minmax(0,1fr);
    align-items:center;
    gap:2px 10px;
    min-width:0;
    margin:0;
    padding:7px 9px;
  }
  .student-task-page .s-id .nm{min-width:0;white-space:nowrap}
  .student-task-page .s-id .mt{
    min-width:0;
    margin:0;
    font-size:10.5px;
    line-height:1.35;
    white-space:normal;
    overflow-wrap:anywhere;
  }
  .student-task-page .s-id .warnlink{grid-column:1/-1}
  .student-task-page #navList{
    grid-area:flow;
    width:100%;
    min-width:0;
    max-width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    scrollbar-width:none;
    border-top:1px solid var(--hair-2);
    padding-top:4px;
  }
  .student-task-page #navList::-webkit-scrollbar{display:none}
  .student-task-page #chSub{display:none}
  .student-task-page .side>.s-nav:not(#navList):not(#chSub){
    grid-area:quick;
    width:100%;
    min-width:0;
    max-width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    scrollbar-width:none;
    border-top:1px solid var(--hair-2);
    padding-top:4px;
  }
  .student-task-page .side>.s-nav:not(#navList):not(#chSub)::-webkit-scrollbar{display:none}
  .student-task-page .s-key{
    grid-area:key;
    width:100%;
    margin:0;
    padding:0;
    border:none;
  }
  .student-task-page .s-key:empty{display:none}
  .workflow-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .workflow-bar>*:first-child{grid-column:1/-1}
  .workflow-bar .btn{width:100%;justify-content:center}
  .resource-toolbar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .resource-toolbar .seg,.resource-toolbar>.inp{width:100%;min-width:0}
  .resource-toolbar>.grow{display:none}
  .resource-toolbar>#composeLessonBtn{grid-column:1/-1}
  .resource-scope{overflow-x:auto;white-space:nowrap;scrollbar-width:none}
  .resource-scope::-webkit-scrollbar{display:none}
  .resource-list-row{grid-template-columns:auto auto auto minmax(0,1fr)}
  .resource-list-row .resource-open{grid-column:3/4}
  .resource-list-row .resource-add{grid-column:4/5;justify-self:start}
  .package-item{grid-template-columns:auto minmax(0,1fr)}
  .package-item .resource-open,.package-item .rec-add{grid-row:2}
  .package-item .resource-open{grid-column:1/2}.package-item .rec-add{grid-column:2/3;justify-self:start}
  .pulse-metrics{grid-template-columns:repeat(4,minmax(70px,1fr))}
  .pulse-metric:nth-child(4){border-right:none}
  .pulse-grid{grid-template-columns:1fr}
  .stats-detail-bar{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stats-detail-bar strong{grid-column:1/-1}
  .data-head{display:none}
  .student-data-row{grid-template-columns:minmax(150px,1fr) auto}
  .student-data-row>*{min-width:0}
  .student-data-row .ops{grid-column:1/-1;justify-content:flex-start}
  .resource-metric{grid-template-columns:minmax(150px,1fr) repeat(2,minmax(60px,.5fr))}
  .resource-metric>*:nth-child(4),.resource-metric>*:nth-child(5){display:none}
}
@media(max-width:620px){
  .student-task-page .s-id{grid-template-columns:1fr;gap:2px}
  .student-task-page .s-id .warnlink{grid-column:auto}
  .task-fields{grid-template-columns:1fr}
  .task-fields .wide{grid-column:auto}
  .item-config{grid-template-columns:minmax(0,1fr) auto}
  .item-config .check-control,.item-config .minute-control,.item-config .points-input{grid-row:2}
  .item-config .task-actions{grid-column:1/-1}
  .workflow-bar{grid-template-columns:1fr}
  .workflow-bar>*:first-child{grid-column:auto}
  .resource-toolbar{grid-template-columns:1fr}
  .resource-toolbar>#composeLessonBtn{grid-column:auto}
  .resource-scope .grow{display:none}
  .resource-list-row{grid-template-columns:auto auto minmax(0,1fr)}
  .resource-list-row>.tag{grid-column:3/4}
  .resource-list-row>.item-title{grid-column:1/-1}
  .resource-list-row .resource-open{grid-column:1/2}
  .resource-list-row .resource-add{grid-column:2/4}
  .package-head{align-items:flex-start}.package-total{white-space:nowrap}
  .package-stage{grid-template-columns:1fr;gap:7px}
  .package-time{flex-direction:row;align-items:center;gap:7px}
  .package-actions{align-items:flex-start;flex-direction:column}
  .package-actions .btn{margin-left:0;width:100%;justify-content:center}
  .pulse-metrics{grid-template-columns:repeat(2,minmax(0,1fr))}
  .pulse-metric:nth-child(even){border-right:none}
  .stats-detail-bar{grid-template-columns:1fr}
  .stats-detail-bar strong{grid-column:auto}
  .evidence-ladder{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px 0}
  .evidence-ladder span:nth-child(3)::after,.evidence-ladder span:nth-child(6)::after{display:none}
  .action-fields{grid-template-columns:1fr}
  .action-fields .field-row:nth-child(2),.action-fields .field-row:nth-child(3){grid-column:auto}
  .action-resource-list{grid-template-columns:1fr}
  .student-item-row{grid-template-columns:auto auto minmax(0,1fr)}
  .student-item-row .go,.student-item-row .stuck-toggle{grid-row:2}
  .student-item-row .go{grid-column:2/4}
  .submission-box{grid-template-columns:1fr}
}