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var(--line);background:#fff;border-radius:9px;gap:6px;padding:8px;display:grid}.matrix-video>div{justify-content:space-between;align-items:center;gap:8px;display:flex}.matrix-video span{background:var(--violet-soft);width:fit-content;color:var(--violet);border-radius:999px;padding:3px 6px;font-size:9px;font-weight:750}.matrix-video button{color:#c65757;background:#fff0f0;border:0;border-radius:7px;width:22px;height:22px;font-size:15px;line-height:1}.matrix-video strong{-webkit-line-clamp:3;-webkit-box-orient:vertical;font-size:11px;line-height:1.35;display:-webkit-box;overflow:hidden}.empty-cell{color:#a7aab6;font-size:10px}@media (width<=960px){.content-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:repeat(2,1fr)}.library-panel{min-height:auto}}@media (width<=650px){.app-shell{width:min(100% - 24px,1420px)}.topbar{flex-direction:column;align-items:flex-start;gap:14px;padding:15px 0}.account-actions{flex-wrap:wrap;width:100%}.manage-button{flex:1}.profile-switcher{width:100%}.profile-switcher button{flex:1;justify-content:center;padding-inline:6px;font-size:11px}.hero{flex-direction:column;align-items:stretch;padding-top:30px}.date-control{min-width:0}.student-overview,.stats-grid{grid-template-columns:1fr 1fr}.student-card{padding:11px}.mini-progress{display:none}.stats-grid article{padding:12px}.stat-icon{width:34px;height:34px}.stats-grid strong{font-size:17px}.panel{border-radius:17px;padding:16px}.content-grid{gap:12px}.library-actions{flex-direction:column;align-items:flex-end}.planner-controls{grid-template-columns:1fr;align-items:stretch}.modal.planner-modal{width:calc(100vw - 12px);max-height:calc(100vh - 12px);padding:16px}.management-grid,.managed-students,.library-assignment-list{grid-template-columns:1fr}.student-management-heading{flex-direction:column;align-items:stretch}.student-management-heading select{width:100%}.modal.management-modal{max-height:calc(100vh - 24px);overflow:auto}}@media (width<=430px){.student-overview,.stats-grid{grid-template-columns:1fr}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important}}