.overview-card{margin-bottom:18px}
.recommendation{border-left:3px solid #78a9e8;background:#f4f8fe;padding:11px 13px;margin:10px 0;border-radius:0 7px 7px 0}
.recommendation strong{color:#2873c8;font-size:12px}
.recommendation p{color:#5a718a;font-size:12px;line-height:1.6;margin:5px 0 0}
.model-box{margin-top:10px;border-left:3px solid #8f79dc;background:#f7f4ff;padding:13px 15px;border-radius:0 8px 8px 0}
.model-box span{font-size:11px;font-weight:800;color:#7159c2}
.model-box p{font-size:12px;color:#555070;line-height:1.7;margin:6px 0 0}
.student-model-card .card-label{margin-bottom:9px}.student-model-note,.student-model-status{font-size:11px;line-height:1.65;color:#71869c;margin:0 0 10px}.student-model-card label{display:block;font-size:12px;font-weight:700;color:#4b607a;margin:13px 0 7px}.student-model-card input,.student-model-card select{width:100%;height:40px;border:1px solid #dce5ef;border-radius:8px;padding:0 12px;background:#fbfdff;color:#233956;font-size:13px}.student-model-card input:focus,.student-model-card select:focus{outline:2px solid #cfe4ff}.student-model-card small{display:block;color:#8fa1b5;font-size:10px;line-height:1.5;margin-top:5px}.student-model-actions{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin:13px 0}.student-model-actions .secondary{padding:9px 12px}.student-model-status{margin:8px 0 0}
.new-demo{margin-top:9px;width:100%;text-align:center}
.history-summary{margin:-8px 0 13px;color:#5a718a;font-size:11px;line-height:1.6}
.dashboard-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.dashboard-actions label{font-size:12px;color:#60758e}
.dashboard-actions select{height:36px;border:1px solid #dce5ef;border-radius:8px;padding:0 10px;background:#fff;color:#233956;font-size:12px}
.attention-card{margin-bottom:18px;border-color:#cfe0f4;background:linear-gradient(135deg,#fff 0%,#f7fbff 100%)}
.attention-head,.attention-title-row,.record-heading{display:flex;align-items:center;justify-content:space-between;gap:16px}
.attention-head .card-label,.record-heading .card-label{margin-bottom:0}
.attention-head>span{color:#8294a8;font-size:11px}
.attention-title-row{margin-top:15px;justify-content:flex-start}
.attention-title-row h2{margin:0;color:#1d3552;font-size:22px}
.status-badge{border-radius:99px;background:#fff0e8;color:#b85d32;padding:5px 9px;font-size:11px;font-weight:750}
.status-badge.resolved{background:#e9f7f0;color:#27815e}
.attention-meta{margin-top:9px;color:#657d96;font-size:12px}
.attention-diagnosis{max-width:980px;margin:14px 0 0;color:#334f6c;font-size:13px;line-height:1.75}
.attention-actions{display:flex;gap:9px;margin-top:15px}
.category-filter-button{display:block;width:100%;border:0;padding:0;background:none;text-align:left;font:inherit;cursor:pointer}
.category-filter-button:hover .bar-header,.category-filter-button:focus .bar-header{color:#1769c2}
.category-filter-button:focus{outline:2px solid #bcd8fb;outline-offset:5px;border-radius:4px}
.record-heading{margin-bottom:15px}
.record-heading p{margin:6px 0 0;color:#758ba3;font-size:11px}
.record-actions{display:flex;align-items:center;gap:8px}
.text-button{border:0;background:none;color:#2d73c8;font-size:12px;font-weight:700;cursor:pointer;padding:6px}
.record-filters{display:grid;grid-template-columns:1.2fr 1fr 1fr 1fr;gap:10px;margin-bottom:16px;padding:13px;background:#f6f9fc;border-radius:9px}
.record-filters label{display:flex;flex-direction:column;gap:6px;color:#6c8096;font-size:11px;font-weight:700}
.record-filters input,.record-filters select{width:100%;height:36px;border:1px solid #d9e4ef;border-radius:7px;background:#fff;color:#2e4660;padding:0 10px;font-size:12px;outline:none}
.record-filters input:focus,.record-filters select:focus{border-color:#5a98e5;box-shadow:0 0 0 3px #e5f0fd}
.category-cell{color:#b15b34;font-weight:700;white-space:nowrap}
.category-cell.is-solved{color:#27815e}
.evidence-diagnosis{max-width:360px;line-height:1.55}
.empty-state{padding:22px;border:1px dashed #d5e0eb;border-radius:9px;color:#8091a4;text-align:center;font-size:12px}
@media(max-width:1050px){.record-filters{grid-template-columns:1fr 1fr}.evidence-diagnosis{max-width:260px}}
@media(max-width:680px){.record-filters{grid-template-columns:1fr}.attention-title-row,.record-heading{align-items:flex-start;flex-direction:column}.attention-actions{flex-direction:column}.attention-actions button{width:100%}}
.hint-box .strategy-reason{padding-top:7px;border-top:1px solid #d7e6f8;color:#66809c;font-size:11px}
.feedback-source{margin:9px 0 0;color:#8294a8;font-size:11px}
.assignment-overview-card,.exercise-detail-card{margin-bottom:18px}
.roster-note{max-width:360px;color:#7b8da1;font-size:11px;line-height:1.5;text-align:right}
.exercise-overview-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.exercise-overview-card{border:1px solid #dfe7f0;border-radius:11px;background:#fff;padding:15px;text-align:left;color:#314a65;cursor:pointer;transition:border-color .16s,box-shadow .16s,transform .16s}
.exercise-overview-card:hover{border-color:#9fc4f0;box-shadow:0 8px 20px #2c6eb214;transform:translateY(-1px)}
.exercise-overview-card:focus{outline:3px solid #d9eaff;outline-offset:2px}
.exercise-overview-card.active{border-color:#4f91df;background:#f6faff;box-shadow:0 0 0 2px #dcecff}
.exercise-card-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.exercise-card-heading strong{font-size:14px;color:#1f3c5d;line-height:1.4}
.exercise-card-heading span{white-space:nowrap;color:#7d8fa3;font-size:10px;background:#f1f5f9;border-radius:99px;padding:4px 7px}
.exercise-card-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:5px;margin:14px 0 11px}
.exercise-card-stats span{display:flex;flex-direction:column;gap:3px;color:#8797a9;font-size:9px;text-align:center}
.exercise-card-stats b{color:#2f5f93;font-size:17px}
.exercise-overview-card p{margin:0;color:#667d94;font-size:11px;line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.exercise-detail-card>.record-heading h2{margin:5px 0 0;color:#1f3958;font-size:22px}
.detail-time{color:#7e91a6;font-size:11px;white-space:nowrap}
.exercise-detail-metrics{display:grid;grid-template-columns:repeat(5,minmax(90px,1fr));gap:10px;margin:18px 0}
.detail-metric{border:1px solid #e3eaf2;border-radius:9px;background:#f8fafc;padding:13px;text-align:center}
.detail-metric strong{display:block;color:#285f9f;font-size:22px}
.detail-metric span{display:block;margin-top:4px;color:#788b9f;font-size:10px}
.exercise-analysis-grid{margin:0;padding:17px 0;border-top:1px solid #edf1f5;border-bottom:1px solid #edf1f5}
.exercise-analysis-grid>section{min-width:0}
.student-status-heading{margin-top:18px}
.status-view-filter{display:flex;align-items:center;gap:8px;color:#6c8096;font-size:11px;font-weight:700}
.status-view-filter select{height:34px;border:1px solid #d9e4ef;border-radius:7px;background:#fff;color:#2e4660;padding:0 9px;font-size:11px}
.homework-status{display:inline-block;border-radius:99px;padding:5px 9px;font-size:10px;font-weight:750;white-space:nowrap}
.homework-status.is-completed{background:#e8f7ef;color:#267d59}
.homework-status.is-attention{background:#fff0e8;color:#ad5933}
.homework-status.is-unsubmitted{background:#eef2f6;color:#718398}
.student-status-table td:first-child{font-weight:700;color:#345a82}
.trajectory-source-row.is-selected{background:#eaf4ff;box-shadow:inset 3px 0 0 #3f88df}
.trajectory-backdrop{position:fixed;inset:0;z-index:89;background:#10243d52;opacity:0;pointer-events:none;transition:opacity .2s ease}
.trajectory-drawer{position:fixed;z-index:90;top:0;right:0;width:min(460px,calc(100vw - 48px));height:100vh;display:flex;flex-direction:column;background:#fff;border-left:1px solid #d9e5f2;box-shadow:-18px 0 42px #16395b26;transform:translateX(105%);visibility:hidden;transition:transform .22s ease,visibility 0s linear .22s}
.trajectory-drawer.is-open{transform:translateX(0);visibility:visible;transition:transform .22s ease}
.trajectory-drawer-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:24px 22px 18px;border-bottom:1px solid #e5ecf4}
.trajectory-drawer-head .card-label{margin-bottom:7px}
.trajectory-drawer-head h2{margin:0;color:#1e3957;font-size:20px;line-height:1.4}
.trajectory-close{flex:0 0 auto;width:34px;height:34px;border:0;border-radius:8px;background:#eef4fb;color:#456685;font-size:24px;line-height:1;cursor:pointer}
.trajectory-close:hover,.trajectory-close:focus{background:#dfeeff;color:#1d68b8;outline:2px solid #c5def9}
.trajectory-drawer-body{min-height:0;overflow-y:auto;padding:18px 22px 28px}
.trajectory-drawer-body .timeline-item{padding:15px 16px}
.timeline-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:10px}
.timeline-heading strong{color:#28577f;font-size:13px}
.timeline-heading time{color:#8192a4;font-size:10px;white-space:nowrap}
.timeline-diagnosis{margin:0 0 12px;color:#405a76;font-size:12px;line-height:1.65}
.timeline-details{display:grid;grid-template-columns:76px minmax(0,1fr);gap:6px 10px;margin:0;padding-top:10px;border-top:1px solid #e2eaf3;font-size:11px;line-height:1.55}
.timeline-details dt{color:#8292a3;font-weight:700}
.timeline-details dd{margin:0;color:#405a76;overflow-wrap:anywhere}
.trajectory-state{padding:22px 16px;border:1px dashed #cfdae6;border-radius:9px;background:#f8fafc;color:#6d8196;text-align:center;font-size:12px;line-height:1.7}
.trajectory-state.is-loading::before{content:"";display:inline-block;width:12px;height:12px;margin-right:8px;border:2px solid #b9d3ef;border-top-color:#367fcf;border-radius:50%;vertical-align:-2px;animation:trajectory-spin .8s linear infinite}
.trajectory-state.is-error{border-color:#efc7c1;background:#fff8f7;color:#a34c43}
@keyframes trajectory-spin{to{transform:rotate(360deg)}}
.app-notice{position:fixed;z-index:120;left:50%;bottom:24px;max-width:min(560px,calc(100vw - 32px));padding:11px 16px;border-radius:9px;background:#1f3958;color:#fff;box-shadow:0 10px 30px #10243d38;font-size:12px;line-height:1.55;opacity:0;pointer-events:none;transform:translate(-50%,12px);transition:opacity .18s,transform .18s}
.app-notice.is-visible{opacity:1;transform:translate(-50%,0)}
.app-notice.is-error{background:#963f39}
.app-notice.is-success{background:#237654}
@media(max-width:680px){body.trajectory-open{overflow:hidden}}
.intervention-card{margin-bottom:18px}
.intervention-queue{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.intervention-item{width:100%;border:1px solid #dde7f1;border-left:4px solid #82a9d4;border-radius:9px;background:#fbfdff;padding:13px 14px;text-align:left;cursor:pointer}
.intervention-item:hover,.intervention-item:focus{border-color:#98bde5;background:#f4f9ff;outline:2px solid #d8e9fb}
.intervention-item.priority-3{border-left-color:#d66c55;background:#fffaf8}
.intervention-item.priority-2{border-left-color:#d7a342;background:#fffdf7}
.intervention-item-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.intervention-item-head strong{color:#274967;font-size:13px}
.intervention-item-head span{border-radius:99px;background:#e8f1fb;color:#47739f;padding:4px 7px;font-size:9px;font-weight:800;white-space:nowrap}
.priority-3 .intervention-item-head span{background:#fde9e4;color:#a64d3c}
.priority-2 .intervention-item-head span{background:#fff1cf;color:#906817}
.intervention-item p{margin:7px 0 0;color:#71869b;font-size:10px;line-height:1.55}
.intervention-item .intervention-reason{color:#4e657d;font-size:11px}
.intervention-item .intervention-action{color:#2d6cae;font-weight:700}
@media(max-width:760px){.intervention-queue{grid-template-columns:1fr}}
@media(max-width:1050px){.exercise-overview-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.exercise-detail-metrics{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.exercise-overview-grid{grid-template-columns:1fr}.roster-note{text-align:left}.exercise-detail-metrics{grid-template-columns:repeat(2,1fr)}.student-status-heading{align-items:stretch}.status-view-filter{justify-content:space-between}.status-view-filter select{flex:1}.exercise-card-stats{grid-template-columns:repeat(4,1fr)}.trajectory-backdrop.is-open{opacity:1;pointer-events:auto}.trajectory-drawer{width:100vw;border-left:0}.trajectory-drawer-head{padding:20px 17px 15px}.trajectory-drawer-body{padding:15px 17px 24px}}