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40%,var(--parent-sidebar-border));color:var(--parent-sidebar-active-text);background:#fff}.parent-sidebar-restore-icon{font-size:16px;line-height:1}.parent-sidebar-restore-label{white-space:nowrap}}:root{--teacher-bg: #f4f6f8;--teacher-card: #ffffff;--teacher-text: #1f2937;--teacher-text-secondary: #5c6570;--teacher-text-muted: #8b939e;--teacher-brand: #2563eb;--teacher-brand-soft: #eff6ff;--teacher-warning: #d97706;--teacher-warning-soft: #fef3e2;--teacher-planning: #6b7280;--teacher-planning-soft: #f3f4f6;--teacher-radius-md: 14px;--teacher-shadow: 0 2px 12px rgba(31, 41, 55, .06);--teacher-page-x: 16px;--teacher-nav-height: 56px;--teacher-touch-min: 44px;--teacher-touch-control-min: 36px;--teacher-touch-control-gap: 6px;--teacher-touch-control-padding: 12px;--teacher-touch-hit-min: 36px;--teacher-sidebar-width: 240px;--teacher-content-max: 1240px;--teacher-surface: #ffffff;--teacher-border: #e8ecf1;--teacher-muted: #8b939e;--teacher-tablet-breakpoint: 768px;--teacher-desktop-breakpoint: 768px;--teacher-shell-height: 100vh;--teacher-shell-height: 100svh}html.hongtu-standalone-web-app .teacher-shell{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px);box-sizing:border-box}@media(hover:none)and (pointer:coarse){:root{--teacher-touch-min: 48px;--teacher-touch-control-min: 48px;--teacher-touch-control-gap: 8px;--teacher-touch-control-padding: 14px;--teacher-touch-hit-min: 48px}}.teacher-shell{min-height:100%;background:var(--teacher-bg);color:var(--teacher-text)}.teacher-shell-inner{min-width:0;min-height:100%;max-width:480px;margin:0 auto}.teacher-main{min-height:calc(100vh - var(--teacher-nav-height));min-height:calc(100svh - var(--teacher-nav-height));padding-bottom:calc(var(--teacher-nav-height) + env(safe-area-inset-bottom,0px) + 16px);min-width:0;width:100%}.teacher-page{padding:16px var(--teacher-page-x) 24px;max-width:720px;min-width:0;width:100%;box-sizing:border-box}@media(min-width:768px){:root{--teacher-sidebar-width: 200px;--teacher-page-x: 20px}html:has(.teacher-shell),body:has(.teacher-shell),#app:has(.teacher-shell){height:var(--teacher-shell-height);max-height:var(--teacher-shell-height);overflow:hidden}.teacher-shell{display:grid;grid-template-columns:var(--teacher-sidebar-width) minmax(0,1fr);height:var(--teacher-shell-height);max-height:var(--teacher-shell-height);min-height:0;overflow:hidden;transition:grid-template-columns .18s ease}.teacher-shell--collapsed{--teacher-sidebar-width: 72px;grid-template-columns:72px minmax(0,1fr)}.teacher-shell--focus{--teacher-sidebar-width: 0px;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}.teacher-shell--focus>.teacher-sidebar-nav{display:none!important}.teacher-shell--focus>.teacher-shell-inner{grid-column:1;grid-row:1;min-width:0;width:100%}.teacher-shell--focus>.teacher-sidebar-restore{grid-column:1;grid-row:1}@media(prefers-reduced-motion:reduce){.teacher-shell{transition:none}}.teacher-shell-inner{max-width:none;margin:0;min-width:0;min-height:0;height:100%;width:100%;display:flex;flex-direction:column;overflow:hidden}.teacher-main{flex:1 1 auto;min-height:0;min-width:0;width:100%;overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;padding:20px 22px 40px;display:flex;flex-direction:row;align-items:stretch}.teacher-main:has([data-immersive-classroom=true]){padding:0}.teacher-aux-scroll-rail{position:sticky;top:0;float:none;z-index:9;flex:0 0 18px;width:18px;align-self:stretch;height:auto;max-height:100%;margin-left:-18px;margin-right:2px;padding:0;box-sizing:border-box;pointer-events:auto}@media(hover:none),(pointer:coarse){.teacher-aux-scroll-rail{display:none!important}}.teacher-aux-scroll-track{position:relative;width:18px;height:100%;cursor:pointer}.teacher-aux-scroll-track:before{content:"";position:absolute;top:8px;bottom:8px;left:6px;width:6px;border-radius:999px;background:#94a3b873}.teacher-aux-scroll-thumb{position:absolute;left:6px;width:6px;border-radius:999px;background:#4755698c;pointer-events:auto;touch-action:none}.teacher-page{max-width:none;padding:0}}@media(min-width:1024px){:root{--teacher-sidebar-width: 240px;--teacher-page-x: 28px}.teacher-shell--collapsed{--teacher-sidebar-width: 72px;grid-template-columns:72px minmax(0,1fr)}.teacher-shell--focus{--teacher-sidebar-width: 0px;grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,1fr)}.teacher-shell--focus>.teacher-sidebar-nav{display:none!important}.teacher-shell--focus>.teacher-shell-inner{grid-column:1;grid-row:1;min-width:0;width:100%}.teacher-shell--focus>.teacher-sidebar-restore{grid-column:1;grid-row:1}.teacher-main{padding:24px 28px 48px}.teacher-main:has([data-testid=teacher-students-page]){padding-top:12px;padding-bottom:32px}}.teacher-stable-modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:80;display:flex;align-items:center;justify-content:center;padding:max(.75rem,env(safe-area-inset-top,0px)) .75rem max(.75rem,env(safe-area-inset-bottom,0px));background:#0f172a73;overscroll-behavior:none}.teacher-stable-modal{width:min(100%,28rem);max-height:min(88dvh,40rem);display:flex;flex-direction:column;overflow:hidden;padding:1rem 1.05rem 1.1rem;overscroll-behavior:contain}.teacher-stable-modal-head{display:flex;align-items:center;justify-content:space-between;gap:.75rem;flex:0 0 auto}.teacher-stable-modal-title{margin:0;font-size:1.1rem;font-weight:700}.teacher-stable-modal-close{border:none;background:transparent;font-size:1.4rem;line-height:1;cursor:pointer;color:#64748b}.teacher-stable-modal-hint{margin:.4rem 0 .65rem;font-size:.8125rem;color:#64748b;flex:0 0 auto}.teacher-stable-modal-body{flex:1 1 auto;min-height:0;overflow-x:hidden;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}body.teacher-modal-scroll-locked{overflow:hidden!important;touch-action:none}@media(max-width:767px){.teacher-stable-modal-backdrop{align-items:flex-end}.teacher-stable-modal{width:100%;max-height:min(92dvh,44rem);border-bottom-left-radius:0;border-bottom-right-radius:0}}@media(max-width:767px){.teacher-aux-scroll-rail{display:none!important}}.teacher-page-header{margin-bottom:12px}.teacher-page-header h1{font-size:22px;font-weight:700;margin:0}.teacher-page-subtitle{margin:6px 0 0;font-size:14px;color:var(--teacher-text-secondary)}.teacher-reminder-card{display:block;background:var(--teacher-card);border-radius:var(--teacher-radius-md);padding:16px;margin-bottom:12px;box-shadow:var(--teacher-shadow);text-decoration:none;color:inherit;border:1px solid transparent;transition:border-color .15s;box-sizing:border-box}.teacher-reminder-card:active,.teacher-reminder-card:hover{border-color:#2563eb33}.teacher-reminder-card.planning{background:var(--teacher-planning-soft)}.teacher-reminder-card.primary{background:#fff;border-color:#2563eb38;box-shadow:0 4px 18px #2563eb1a}.teacher-reminder-card.primary h2{font-size:18px}.teacher-reminder-card.primary .card-action{font-weight:600}.teacher-reminder-card.secondary-planning{padding:12px 14px;margin-bottom:8px;background:#fff;box-shadow:0 1px 6px #1f29370a}.teacher-reminder-card.secondary-planning h2{font-size:14px;font-weight:600;margin:0 0 4px}.teacher-reminder-card.secondary-planning .card-body{font-size:13px;line-height:1.45}.teacher-reminder-card.secondary-planning .card-action{margin-top:6px;font-size:12px;font-weight:500;color:var(--teacher-text-muted)}.teacher-reminder-card h2{font-size:16px;font-weight:600;margin:0 0 8px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.teacher-reminder-card .card-body{font-size:14px;color:var(--teacher-text-secondary);line-height:1.55}.teacher-reminder-card .card-body p{margin:0 0 4px}.teacher-reminder-card .card-body p:last-child{margin-bottom:0}.teacher-reminder-card .card-action{margin-top:10px;font-size:13px;color:var(--teacher-brand);font-weight:500}.teacher-badge-building{display:inline-block;font-size:11px;font-weight:500;color:#4b5563;background:#e5e7eb;border-radius:999px;padding:2px 8px;margin-left:auto;flex-shrink:0}.teacher-badge-planning{display:inline-block;font-size:11px;font-weight:500;color:var(--teacher-planning);background:#e5e7eb;border-radius:6px;padding:2px 8px;margin-left:auto}.teacher-badge-open{display:inline-block;font-size:11px;font-weight:500;color:#2e9e6a;background:#e8f6ef;border-radius:6px;padding:2px 8px;margin-left:auto}.teacher-empty-line{color:var(--teacher-text-muted)}.teacher-page-header-row{display:flex;align-items:center;gap:8px;min-height:var(--teacher-touch-min)}.teacher-back-btn{border:none;background:transparent;font-size:28px;line-height:1;padding:0 8px 0 0;cursor:pointer;color:var(--teacher-text);min-width:var(--teacher-touch-min);min-height:var(--teacher-touch-min);display:flex;align-items:center}.teacher-page-header-row h1{flex:1;font-size:18px;font-weight:600;margin:0}.teacher-logout-btn{display:block;width:100%;max-width:100%;margin-top:20px;padding:12px;border:1px solid #e5e7eb;border-radius:12px;background:#fff;color:#dc2626;font-size:15px;font-weight:500;cursor:pointer;box-sizing:border-box;position:static}.teacher-logout-btn:disabled{opacity:.6}.teacher-sidebar-nav{display:none}.teacher-bottom-nav{position:fixed;left:50%;transform:translate(-50%);bottom:0;width:100%;max-width:480px;height:calc(var(--teacher-nav-height) + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);display:flex;align-items:stretch;background:#fffffff7;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--teacher-border);z-index:90;box-shadow:0 -4px 24px #1f29370f}.teacher-bottom-nav-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;text-decoration:none;color:var(--teacher-text-muted);font-size:11px;min-height:var(--teacher-nav-height);transition:color .15s}.teacher-bottom-nav-item.active{color:var(--teacher-brand);font-weight:600}.teacher-bottom-nav-item.pending{color:var(--teacher-brand);font-weight:600;position:relative;background:#2563eb0f}.teacher-bottom-nav-item.pending .teacher-bottom-nav-label{text-decoration:underline;text-underline-offset:2px}.teacher-bottom-nav-icon{font-size:18px;line-height:1}.teacher-bottom-nav-label{line-height:1.2}.teacher-nav-pending-dot{width:7px;height:7px;border-radius:50%;background:#93c5fd;box-shadow:0 0 0 2px #2563eb40;flex-shrink:0;animation:teacher-nav-pending-pulse .9s ease-in-out infinite}.teacher-nav-pending-dot-bottom{position:absolute;top:6px;right:calc(50% - 18px);width:6px;height:6px}@keyframes teacher-nav-pending-pulse{0%,to{opacity:.55;transform:scale(.92)}50%{opacity:1;transform:scale(1)}}@media(prefers-reduced-motion:reduce){.teacher-nav-pending-dot{animation:none}}@media(min-width:768px){.teacher-sidebar-nav{display:flex;flex-direction:column;height:100%;max-height:100%;min-height:0;background:#1e293b;color:#e2e8f0;padding:0;position:relative;align-self:stretch;overflow-x:hidden;overflow-y:auto;overscroll-behavior:contain}.teacher-sidebar-brand{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;padding:20px 16px 16px;border-bottom:1px solid rgba(255,255,255,.08);flex-shrink:0}.teacher-sidebar-brand-text{min-width:0}.teacher-sidebar-logo{display:block;font-size:18px;font-weight:800;letter-spacing:.02em;color:#fff}.teacher-sidebar-logo-hongtu{color:#c63d3d}.teacher-sidebar-logo-product{color:#fff}.teacher-sidebar-tag{display:block;margin-top:4px;font-size:12px;color:#94a3b8}.teacher-sidebar-controls{display:flex;flex-direction:column;gap:6px;flex-shrink:0}.teacher-sidebar-control{box-sizing:border-box;width:var(--teacher-touch-min);height:var(--teacher-touch-min);min-width:var(--teacher-touch-min);min-height:var(--teacher-touch-min);display:inline-flex;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.14);border-radius:10px;background:#ffffff0f;color:#e2e8f0;font-size:16px;line-height:1;cursor:pointer;padding:0}.teacher-sidebar-control:hover{background:#ffffff1f;color:#fff}.teacher-sidebar-nav--collapsed .teacher-sidebar-brand{flex-direction:column;align-items:center;padding:12px 8px}.teacher-sidebar-nav--collapsed .teacher-sidebar-brand-text{width:100%;text-align:center}.teacher-sidebar-nav--collapsed .teacher-sidebar-logo{font-size:18px}.teacher-sidebar-nav--collapsed .teacher-sidebar-tag,.teacher-sidebar-nav--collapsed .teacher-sidebar-link-text,.teacher-sidebar-nav--collapsed .teacher-sidebar-nav-error{display:none}.teacher-sidebar-nav--collapsed .teacher-sidebar-controls{width:100%;align-items:center}.teacher-sidebar-nav--collapsed .teacher-sidebar-links{padding:8px 6px;align-items:center}.teacher-sidebar-nav--collapsed .teacher-sidebar-link{width:100%;justify-content:center;padding:11px 0;gap:0}.teacher-sidebar-nav--collapsed .teacher-sidebar-link .teacher-nav-pending-dot{position:absolute;top:8px;right:8px;margin-left:0}.teacher-shell--focus .teacher-sidebar-nav,.teacher-sidebar-nav--focus-hidden{display:none!important}.teacher-sidebar-restore{position:fixed;left:max(8px,env(safe-area-inset-left,0px));top:max(12px,env(safe-area-inset-top,0px));z-index:80;box-sizing:border-box;min-width:44px;min-height:44px;display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:12px;border:1px solid var(--teacher-border, #e8ecf1);background:#fffffff5;color:var(--teacher-text, #1f2937);box-shadow:0 6px 18px #1f29371f;cursor:pointer;font-size:14px;font-weight:600}.teacher-sidebar-restore-icon{font-size:16px;line-height:1}.teacher-sidebar-restore-label{white-space:nowrap}.teacher-sidebar-links{display:flex;flex-direction:column;gap:4px;padding:12px 10px;flex:1}.teacher-sidebar-link{display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:10px;text-decoration:none;color:#cbd5e1;font-size:14px;font-weight:500;transition:background .15s,color .15s;position:relative}.teacher-sidebar-link :deep(.teacher-msg-badge){margin-left:auto}.teacher-sidebar-nav--collapsed .teacher-sidebar-link :deep(.teacher-msg-badge){position:absolute;top:6px;right:6px;margin-left:0}.teacher-sidebar-link:hover{background:#ffffff0f;color:#fff}.teacher-sidebar-link.active{background:#2563eb38;color:#fff;font-weight:600}.teacher-sidebar-link.pending{background:#2563eb33;color:#fff;box-shadow:inset 0 0 0 1px #93c5fdb3;position:relative}.teacher-sidebar-link.pending .teacher-sidebar-link-text{letter-spacing:.01em}.teacher-sidebar-link .teacher-nav-pending-dot{margin-left:auto;background:#bfdbfe}.teacher-sidebar-nav-error{margin:8px 12px 0;padding:8px 10px;border-radius:8px;font-size:12px;line-height:1.4;color:#fecaca;background:#7f1d1d73}.teacher-sidebar-icon{width:22px;text-align:center;font-size:16px;flex-shrink:0}.teacher-bottom-nav{display:none!important}}@media(min-width:1024px){.teacher-sidebar-brand{padding:24px 20px 20px}.teacher-sidebar-nav--collapsed .teacher-sidebar-brand{padding:16px 8px}.teacher-sidebar-logo{font-size:20px}.teacher-sidebar-nav--collapsed .teacher-sidebar-logo{font-size:18px}.teacher-sidebar-links{padding:16px 12px}.teacher-sidebar-link{padding:12px 14px;font-size:15px}}.teacher-main-inner{width:100%;max-width:var(--teacher-content-max);margin:0 auto;min-width:0}@media(min-width:768px){.teacher-main-inner{flex:1 1 auto;width:auto}}@media(min-width:768px){.teacher-page{max-width:none;padding:0}.teacher-page-sub,.teacher-page-subtitle{font-size:15px;color:var(--teacher-text-secondary);margin-top:8px}}.teacher-card{background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:20px;margin-bottom:16px;box-shadow:var(--teacher-shadow);box-sizing:border-box}.teacher-muted{color:var(--teacher-text-muted);font-size:14px;margin:0}.teacher-error{color:#dc2626;font-size:14px;margin:0 0 12px}.teacher-link{color:var(--teacher-brand);text-decoration:none;font-size:14px;font-weight:500}.teacher-btn{display:inline-flex;align-items:center;justify-content:center;border:1px solid transparent;border-radius:10px;padding:10px 18px;font-size:15px;font-weight:600;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;box-sizing:border-box;background:#fff;color:var(--teacher-text)}.teacher-btn-primary{background:var(--teacher-brand);color:#fff;border-color:var(--teacher-brand);box-shadow:0 2px 8px #2563eb40}.teacher-btn-primary:hover{background:#1d4ed8}.teacher-btn-outline{background:#fff;border-color:var(--teacher-border);color:var(--teacher-text)}.teacher-btn-sm{padding:8px 14px;font-size:13px}.teacher-btn-block{display:flex;width:100%;text-decoration:none}.teacher-hero-header{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}@media(min-width:768px){.teacher-hero-header{flex-direction:row;align-items:flex-start;justify-content:space-between;gap:24px}}.teacher-hero-header h1{font-size:26px;font-weight:800;margin:0;letter-spacing:-.02em}.teacher-hero-cta{flex-shrink:0;min-width:160px;padding:12px 24px;text-decoration:none}.teacher-stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-bottom:20px}@media(min-width:768px){.teacher-stats-grid{grid-template-columns:repeat(4,1fr);gap:16px}}.teacher-stat-card{background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:18px 16px;display:flex;flex-direction:column;gap:6px;box-shadow:var(--teacher-shadow)}.teacher-stat-label{font-size:13px;color:var(--teacher-text-secondary);font-weight:500}.teacher-stat-value{font-size:2rem;font-weight:800;line-height:1.1;color:var(--teacher-text);letter-spacing:-.03em}.teacher-stat-card:first-child .teacher-stat-value{color:var(--teacher-brand)}.teacher-stat-skeleton{display:block;width:2.4rem;height:1.65rem;margin-top:2px;border-radius:6px;background:linear-gradient(90deg,#eef1f4,#f7f8fa 45%,#eef1f4);background-size:200% 100%;animation:teacher-stat-shimmer 1.2s ease-in-out infinite}.teacher-stat-unavailable{display:block;min-height:1.65rem;font-size:1.5rem;font-weight:700;line-height:1.1;color:var(--teacher-muted)}@keyframes teacher-stat-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media(prefers-reduced-motion:reduce){.teacher-stat-skeleton{animation:none}}.teacher-section-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.teacher-section-head h2{margin:0;font-size:17px;font-weight:700}.teacher-task-table{list-style:none;margin:0;padding:0}.teacher-task-row{display:grid;grid-template-columns:1fr auto;gap:8px 12px;padding:16px 0;border-bottom:1px solid var(--teacher-border);align-items:center}.teacher-task-row:last-child{border-bottom:none;padding-bottom:0}@media(min-width:768px){.teacher-task-row{grid-template-columns:minmax(0,2fr) minmax(0,1fr) minmax(0,1fr) auto auto;gap:16px;align-items:center}}.teacher-task-row-title{font-weight:600;font-size:15px;margin:0 0 4px}.teacher-task-row-sub{font-size:13px;color:var(--teacher-text-secondary);margin:0}.teacher-task-row-meta{font-size:13px;color:var(--teacher-text-muted)}.teacher-task-row-status{font-size:12px;font-weight:600;padding:4px 10px;border-radius:999px;background:var(--teacher-brand-soft);color:var(--teacher-brand);white-space:nowrap;justify-self:start}.teacher-empty-state{text-align:center;padding:32px 16px}.teacher-empty-state p{margin:0 0 8px;color:var(--teacher-text-secondary)}.teacher-alert{background:#fff7ed;border-color:#fed7aa}.teacher-mobile-only-cta{display:block;margin-bottom:16px}@media(min-width:768px){.teacher-mobile-only-cta{display:none}}.teacher-desk-page{padding:0}.teacher-desk-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.teacher-desk-header h1{flex:1;font-size:22px;font-weight:800;margin:0}@media(min-width:768px){.teacher-desk-header h1{font-size:26px}.teacher-desk-header .teacher-back-btn{display:none}}.teacher-desk-refresh{border:1px solid var(--teacher-border);background:#fff;color:var(--teacher-text);padding:8px 14px;border-radius:8px;font-size:14px;cursor:pointer}.teacher-desk-tabs{display:flex;gap:8px;margin-bottom:16px;background:#eef2f6;padding:4px;border-radius:12px}.teacher-desk-tabs button{flex:1;padding:10px 12px;border:none;background:transparent;border-radius:9px;font-size:14px;font-weight:600;color:var(--teacher-text-secondary);cursor:pointer;position:relative}.teacher-desk-tabs button.active{background:#fff;color:var(--teacher-brand);box-shadow:0 1px 4px #1f293714}.teacher-desk-filters{display:flex;gap:8px;margin-bottom:16px;flex-wrap:wrap}.teacher-desk-filters button{padding:7px 14px;border:1px solid var(--teacher-border);background:#fff;border-radius:999px;font-size:13px;font-weight:500;color:var(--teacher-text-secondary);cursor:pointer}.teacher-desk-filters button.active{background:var(--teacher-brand);border-color:var(--teacher-brand);color:#fff}.teacher-desk-card{display:flex;gap:16px;background:var(--teacher-surface);border:1px solid var(--teacher-border);border-radius:var(--teacher-radius-md);padding:16px;margin-bottom:12px;box-shadow:var(--teacher-shadow)}.teacher-desk-card.is-new{border-left:4px solid #ef4444}.teacher-desk-empty{text-align:center;padding:48px 24px;background:var(--teacher-surface);border:1px dashed var(--teacher-border);border-radius:var(--teacher-radius-md);color:var(--teacher-text-secondary)}.teacher-desk-empty-title{font-size:16px;font-weight:600;color:var(--teacher-text);margin:0 0 8px}@media(hover:none)and (pointer:coarse){[data-testid=source-material-floating-window] .window-header,[data-testid=source-material-floating-window] .window-toolbar,[data-testid=source-pdf-toolbar]{gap:var(--teacher-touch-control-gap);row-gap:var(--teacher-touch-control-gap)}[data-testid=source-material-floating-window] .ghost,[data-testid=source-material-floating-window] .primary,[data-testid=source-pdf-toolbar] .ghost,[data-testid=source-material-pdf-viewer] .ghost,[data-testid=source-material-docx-viewer] .ghost,[data-testid=source-material-workbench] .touch-btn{box-sizing:border-box;min-height:var(--teacher-touch-control-min);min-width:var(--teacher-touch-control-min);padding-left:var(--teacher-touch-control-padding);padding-right:var(--teacher-touch-control-padding);touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}[data-testid=source-window-zoom-out],[data-testid=source-window-zoom-in]{width:var(--teacher-touch-control-min);height:var(--teacher-touch-control-min);min-width:var(--teacher-touch-control-min);min-height:var(--teacher-touch-control-min);padding:0;font-size:1.35rem;line-height:1}[data-testid=source-window-maximize],[data-testid=source-window-collapse],[data-testid=source-window-expand],[data-testid=source-window-close],[data-testid=source-pdf-prev],[data-testid=source-pdf-next]{min-height:var(--teacher-touch-control-min);min-width:var(--teacher-touch-hit-min);padding-left:var(--teacher-touch-control-padding);padding-right:var(--teacher-touch-control-padding)}[data-testid=source-material-floating-window] .ghost:not(:disabled):active,[data-testid=source-material-floating-window] .primary:not(:disabled):active,[data-testid=source-pdf-toolbar] .ghost:not(:disabled):active,[data-testid=source-material-workbench] .touch-btn:not(:disabled):not(.disabled):active,[data-testid=teacher-lesson-tool-dock] .dock-btn:not(:disabled):active,[data-testid=teacher-lesson-document-tools] .dock-btn:not(:disabled):active{background:#d7e4de;transform:scale(.97)}[data-testid=teacher-lesson-tool-dock] .dock-btn,[data-testid=teacher-lesson-document-tools] .dock-btn{min-height:max(var(--teacher-lesson-dock-hit, 48px),var(--teacher-touch-control-min));min-width:max(var(--teacher-lesson-dock-hit, 48px),var(--teacher-touch-hit-min));touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}}:root{--teacher-lesson-dock-width: 56px;--teacher-lesson-dock-expanded-width: 132px;--teacher-lesson-dock-btn: 38px;--teacher-lesson-dock-hit: 44px;--teacher-lesson-dock-gap: 6px;--teacher-lesson-dock-bg: #1e293b;--teacher-lesson-dock-fg: #e2e8f0;--teacher-lesson-dock-muted: #94a3b8;--teacher-lesson-dock-active: #2563eb;--teacher-lesson-dock-active-bg: rgba(37, 99, 235, .22);--teacher-lesson-dock-focus: #b42318;--teacher-lesson-dock-focus-bg: rgba(180, 35, 24, .32);--teacher-lesson-dock-sep: rgba(255, 255, 255, .12);--teacher-lesson-dock-radius: 14px;--teacher-lesson-title-strip: 40px;--teacher-lesson-dock-restore-visual: 36px;--teacher-lesson-dock-restore-hit: 48px;--teacher-lesson-dock-restore-width: 36px}@media(hover:none)and (pointer:coarse),(any-pointer:coarse){:root{--teacher-lesson-dock-hit: 48px;--teacher-lesson-dock-gap: 8px;--teacher-lesson-dock-restore-hit: 48px}}