/* Task-first teacher app. Solid grouped cards; material only on navigation. */
.teacher-native{--app-accent:#16836a;--app-tint:#e6f3ef;--app-card:var(--wb-surface);--app-gap:1.15rem;background:var(--wb-bg);font-size:16px}
.teacher-native [hidden]{display:none!important}.teacher-native.mobile-sheet-open{overflow:hidden}
.teacher-native .mobile-sheet-backdrop{display:none;position:fixed;inset:0;background:rgba(20,25,30,.35);backdrop-filter:blur(3px)}.teacher-native .mobile-sheet-backdrop.is-open{display:block}
.teacher-native[data-workspace-module=announcement]{--app-accent:#946019;--app-tint:#fbf0db}
.teacher-native[data-workspace-module=collage]{--app-accent:#7550b3;--app-tint:#efeafa}
.teacher-native[data-workspace-module=composer]{--app-accent:#2865b3;--app-tint:#e8eff9}
.teacher-native[data-workspace-module=more],.teacher-native[data-workspace-module=events],.teacher-native[data-workspace-module=schedule]{--app-accent:#516172;--app-tint:#edf0f4}
.teacher-native .manager-shell{width:100%;max-width:1240px;margin:auto;padding:1.5rem 2rem 3rem 250px}
.teacher-native .manager-app{min-height:90dvh}
.teacher-native .manager-header{position:sticky;top:0;z-index:55;display:flex;justify-content:space-between;align-items:center;padding:1rem 0 1.1rem;margin:0 0 1.3rem;background:var(--wb-chrome);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);gap:1rem}
.teacher-native .manager-header h1{font-size:1.9rem;line-height:1.2;margin:.35rem 0 0;letter-spacing:-.04em;font-weight:750}
.teacher-native .teacher-brand{font-size:.72rem;color:var(--wb-muted);font-weight:500;letter-spacing:.02em}.teacher-native .teacher-brand img{width:20px;height:20px}
.teacher-native .header-actions{flex-direction:row;gap:.6rem;align-items:center;flex-wrap:nowrap}
.teacher-native .header-actions .connectivity{padding:0;border:0;background:none;order:3}.teacher-native #hm-connectivity-app-text{display:none}
.teacher-native .app-class-chip{display:block;margin:0;max-width:150px}.teacher-native .app-class-chip select{padding:.6rem 1.6rem .6rem .6rem!important;border:0!important;background:transparent!important;min-height:44px;font-size:.8rem!important;color:var(--wb-muted);font-weight:500}
.teacher-native .app-account-button{display:grid;place-items:center;width:44px;height:44px;border:0;border-radius:50%;background:var(--wb-secondary);color:var(--wb-text);flex-shrink:0;cursor:pointer}.app-account-button svg{width:23px;height:23px}
.app-sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.teacher-native .workspace-switcher{display:contents}.teacher-native .module-picker-trigger,.teacher-native .module-picker-backdrop,.teacher-native #manager-permission-note{display:none!important}
.teacher-native .module-tabs{position:fixed;inset:0 auto 0 0;width:220px;display:flex;flex-direction:column;align-items:stretch;border-radius:0;padding:100px 16px 24px;background:var(--wb-chrome);border-right:1px solid var(--wb-line);z-index:56;gap:6px;overflow:auto;backdrop-filter:blur(20px)}
.teacher-native .module-tabs::before{content:'班主任工作台';position:absolute;top:36px;left:24px;font-size:17px;font-weight:700;color:var(--wb-text)}
.teacher-native .module-picker-head{display:none!important}.teacher-native .module-tab{display:flex;align-items:center;gap:12px;min-height:48px;flex-shrink:0;background:transparent;padding:10px 12px;font-size:14px;border-radius:12px;text-align:left;box-shadow:none}
.teacher-native .module-tab.active{background:var(--app-tint);color:var(--app-accent);box-shadow:none}.teacher-native .module-tab svg{width:22px;height:22px;flex-shrink:0}
.teacher-native .panel,.teacher-native .teacher-collage .card{border:0;border-radius:22px;padding:1.4rem;background:var(--app-card);box-shadow:0 2px 8px rgba(0,0,0,.025);margin-bottom:var(--app-gap)}
.teacher-native .panel-head{align-items:center;margin-bottom:1rem}.teacher-native .panel-head h2,.teacher-native .panel h3{font-size:1.1rem;font-weight:700;margin:0;color:var(--wb-text)}
.teacher-native p,.teacher-native .field-help{color:var(--wb-muted);font-size:.85rem;line-height:1.65}.teacher-native .panel-head p{font-size:.78rem;margin:.3rem 0 0}
.teacher-native .button,.teacher-native .teacher-collage .btn{min-height:44px!important;border-radius:12px;padding:10px 15px;font-size:.85rem;box-shadow:none;cursor:pointer}
.teacher-native .button.primary,.teacher-native .teacher-collage .btn-primary{background:var(--app-accent);color:white;border:0}.teacher-native .button.ghost{background:var(--wb-secondary);border:0;color:var(--wb-text)}
.teacher-native input,.teacher-native select,.teacher-native textarea{font-size:1rem;border-radius:12px;padding:.75rem;background:var(--wb-secondary);border:1px solid transparent;box-shadow:none;min-height:44px;accent-color:var(--app-accent)}
.teacher-native input:focus-visible,.teacher-native select:focus-visible,.teacher-native textarea:focus-visible{outline:2px solid var(--app-accent);outline-offset:2px}.teacher-native label>span{font-size:.8rem;color:var(--wb-muted);margin-bottom:.45rem}
.teacher-native textarea{line-height:1.65;resize:vertical}.teacher-native .teacher-todo-workspace,.teacher-native .teacher-event-workspace{display:block}
.teacher-native .mobile-sheet-panel{display:none}.teacher-native .mobile-sheet-trigger{display:flex;align-items:center;justify-content:space-between;border:0;background:var(--app-accent);color:#fff;border-radius:14px;min-height:48px;box-shadow:none;width:100%;margin:0 0 1.15rem;padding:12px 18px;cursor:pointer}
.teacher-native .mobile-sheet-trigger strong,.teacher-native .mobile-sheet-trigger b{color:#fff;font-size:.95rem;background:none}.teacher-native .mobile-sheet-trigger small{display:none}
.teacher-native .mobile-sheet-panel.is-mobile-open{display:block;position:fixed;z-index:100;left:50%;top:50%;bottom:auto;right:auto;transform:translate(-50%,-50%);width:min(720px,calc(100% - 40px));max-height:90dvh;margin:0;padding:1.5rem;border-radius:26px;background:var(--app-card);overflow-y:auto;overscroll-behavior:contain;box-shadow:0 24px 80px rgba(0,0,0,.22)}
.teacher-native .mobile-sheet-panel.is-mobile-open h2{padding:0;border:0;font-size:1.2rem;color:var(--wb-text)}
.teacher-native .mobile-sheet-panel .panel-head{padding-right:0}.teacher-native .mobile-sheet-close{display:inline-flex!important;align-items:center;justify-content:center;position:static;width:44px;min-height:44px;background:var(--wb-secondary);color:var(--wb-text);border:0;border-radius:50%;font-size:22px;cursor:pointer}
.teacher-native .mobile-sheet-panel>.panel-head{display:flex;flex-direction:row;flex-wrap:nowrap;position:sticky;top:-1.5rem;z-index:3;background:var(--app-card);padding:1rem 0;margin-top:-.5rem;gap:1rem}.teacher-native .mobile-sheet-panel>.panel-head>div:first-child{min-width:0;flex:1}.teacher-native .mobile-sheet-panel>.panel-head>.record-tools{flex:none}.teacher-native .mobile-sheet-panel>.panel-head>.record-tools .mobile-sheet-close{flex-shrink:0}
.teacher-native .mobile-sheet-panel textarea{min-height:120px}.teacher-native .mobile-sheet-trigger:not(.mobile-sheet-trigger-primary){background:var(--wb-secondary)}.teacher-native .mobile-sheet-trigger:not(.mobile-sheet-trigger-primary) strong,.teacher-native .mobile-sheet-trigger:not(.mobile-sheet-trigger-primary) b{color:var(--wb-text)}
.teacher-native .mobile-sheet-backdrop{z-index:90}.teacher-native .mobile-sheet-panel .record-tools{flex-shrink:0;gap:6px}.teacher-native .mobile-sheet-panel .field-grid{margin-bottom:1rem}
.app-todo-overview{display:grid;grid-template-columns:1fr auto;padding:1.5rem;border-radius:24px;background:var(--app-tint);color:var(--wb-text);margin-bottom:1rem;gap:.6rem}
.app-overline{font-size:.78rem;color:var(--app-accent);font-weight:600}.app-todo-overview h2{font-size:1.3rem;letter-spacing:-.03em;margin:.45rem 0;font-weight:600}.app-todo-overview h2 b{font-size:2.5rem;font-weight:750;vertical-align:baseline}.app-todo-overview p{margin:.2rem 0;font-size:.78rem}
.app-hero-icon{display:grid;place-items:center;width:64px;height:64px;border-radius:20px;background:var(--app-card);color:var(--app-accent);align-self:center}.app-hero-icon svg{width:36px;height:36px}
.app-todo-metrics{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);margin-top:.8rem;padding-top:1rem;border-top:1px solid rgba(22,131,106,.14)}
.app-todo-metrics button{display:grid;gap:3px;justify-items:start;border:0;background:none;color:var(--wb-text);padding:0;min-height:44px;cursor:pointer}.app-todo-metrics b{font-size:1.2rem}.app-todo-metrics span{font-size:.72rem;color:var(--wb-muted)}
.app-segment{display:flex;gap:4px;border-radius:12px;background:var(--wb-secondary);padding:4px;margin-bottom:1rem}.app-segment button{flex:1;padding:9px 5px;border:0;background:none;color:var(--wb-muted);min-height:40px;font:inherit;font-size:.8rem;border-radius:9px;cursor:pointer}.app-segment button.active{background:var(--app-card);box-shadow:0 1px 5px rgba(0,0,0,.06);color:var(--app-accent);font-weight:650}
.teacher-native .teacher-todo-list,.teacher-native .teacher-event-list{max-height:none;overflow:visible}.teacher-native .teacher-todo-item{display:grid;grid-template-columns:44px 1fr;gap:.4rem .7rem;padding:1rem 0;border:0;border-radius:0;border-bottom:1px solid var(--wb-line);background:none}.teacher-native .teacher-todo-item:last-child{border-bottom:0}.teacher-native .teacher-todo-check{width:44px;height:44px;min-width:44px;border:1.5px solid var(--app-accent);border-radius:50%;background:transparent;color:var(--app-accent);font-size:20px;padding:0;align-self:start;cursor:pointer}.teacher-native .teacher-todo-item.is-done .teacher-todo-check{background:var(--app-accent);color:white}
.teacher-native .teacher-todo-title{font-size:1rem;font-weight:650}.teacher-native .teacher-todo-title span{font-size:.65rem;background:#fbeddc;color:#936312}.teacher-native .teacher-todo-item p{margin:4px 0;font-size:.8rem}.teacher-native .teacher-todo-item small{font-size:.73rem}.teacher-native .teacher-todo-actions{grid-column:2;justify-content:flex-end;display:flex;gap:8px;margin-top:5px}
/* Vertical accordion: a shared compact width; the selected card grows out. */
.teacher-native #hm-todo-list{display:grid;gap:.75rem;justify-items:center}
.teacher-native .teacher-todo-item.todo-accordion-card{display:block;width:96%;padding:0;border:1px solid transparent;border-radius:18px;background:var(--wb-secondary);overflow:hidden;transition:width 360ms cubic-bezier(.22,1,.36,1),background-color 220ms ease,border-color 220ms ease}
.teacher-native .teacher-todo-item.todo-accordion-card:last-child{border-bottom:1px solid transparent}
.teacher-native #hm-todo-list.has-expanded .todo-accordion-card{width:90%}
.teacher-native #hm-todo-list.has-expanded .todo-accordion-card.is-expanded{width:100%;background:var(--app-tint);border-color:var(--app-accent)}
.todo-card-header{display:flex;align-items:center;gap:.6rem;min-height:74px;padding:.7rem .8rem}
.teacher-native .todo-card-header .teacher-todo-check{width:44px;height:44px;min-width:44px;align-self:center;position:relative;margin:0;border:0;background:transparent;font-size:14px;isolation:isolate}
.teacher-native .todo-card-header .teacher-todo-check::before{content:'';position:absolute;inset:10px;border:1px solid var(--wb-muted);border-radius:50%;z-index:-1}
.teacher-native .todo-card-header .teacher-todo-check:active::before{border-color:var(--app-accent);background:var(--app-tint)}
.teacher-native .todo-accordion-card.is-done .teacher-todo-check{background:transparent;color:white}
.teacher-native .todo-accordion-card.is-done .teacher-todo-check::before{border-color:var(--app-accent);background:var(--app-accent)}
.teacher-native .todo-card-trigger{display:flex;align-items:center;gap:.5rem;flex:1;min-width:0;min-height:44px;border:0;padding:0;background:none;color:var(--wb-text);text-align:left;font:inherit;cursor:pointer}
.teacher-native .todo-card-trigger:active{transform:none}.todo-card-heading{display:grid;gap:3px;flex:1;min-width:0}
.teacher-native .todo-card-heading .teacher-todo-title{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:1rem;font-weight:650;line-height:1.4}.teacher-native .todo-card-heading small{color:var(--wb-muted);font-size:.7rem;font-weight:400}
.teacher-native .is-expanded .todo-card-heading .teacher-todo-title{white-space:normal;overflow-wrap:anywhere}.todo-card-priority{font-size:.62rem;color:#936312;background:#fbeddc;padding:3px 5px;border-radius:5px;flex:none}.todo-card-chevron{width:16px;height:16px;flex:none;color:var(--wb-muted);transition:transform 300ms cubic-bezier(.22,1,.36,1)}.is-expanded .todo-card-chevron{transform:rotate(180deg)}
.todo-card-details{display:grid;grid-template-rows:0fr;visibility:hidden;transition:grid-template-rows 360ms cubic-bezier(.22,1,.36,1),visibility 0s 360ms}.is-expanded .todo-card-details{grid-template-rows:1fr;visibility:visible;transition:grid-template-rows 360ms cubic-bezier(.22,1,.36,1),visibility 0s}
.todo-card-clip{overflow:hidden;min-height:0}.todo-card-content{padding:0 1rem 1rem;opacity:0;transform:translateY(5px);transition:opacity 100ms ease,transform 140ms ease}.is-expanded .todo-card-content{opacity:1;transform:none;transition:opacity 200ms ease 140ms,transform 240ms ease 140ms}
.teacher-native .todo-card-content p{margin:0;padding:.8rem 0;border-top:1px solid var(--wb-line);white-space:pre-wrap;overflow-wrap:anywhere;color:var(--wb-text);line-height:1.65}.teacher-native .todo-card-content .teacher-todo-actions{margin-top:.4rem}
@media(prefers-reduced-motion:reduce){.teacher-native .todo-accordion-card,.teacher-native .todo-card-details,.teacher-native .todo-card-content,.teacher-native .todo-card-chevron{transition:none!important}.teacher-native .todo-card-content{transform:none}}
@media(prefers-contrast:more){.teacher-native .todo-accordion-card{border-color:var(--wb-muted)}}
.app-empty{text-align:center;padding:1.6rem .6rem}.app-empty>span{display:grid;place-items:center;width:54px;height:54px;margin:0 auto 1rem;border-radius:18px;background:var(--app-tint);color:var(--app-accent)}.app-empty svg{width:28px;height:28px}.app-empty strong{display:block;font-size:.95rem}.app-empty p{font-size:.78rem;max-width:26ch;margin:.5rem auto 0}
.app-tools-heading h2{font-size:1.1rem;margin:0}.app-tools-heading p{font-size:.8rem;margin:.4rem 0 1.25rem}.app-tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-bottom:1.4rem}
.app-tool-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;text-align:left;padding:1.3rem;border:0;border-radius:22px;background:var(--app-card);color:var(--wb-text);min-height:180px;cursor:pointer;gap:.5rem}.app-tool-icon{display:grid;place-items:center;width:46px;height:46px;border-radius:15px;background:#e9eef7;color:#4d689a}.app-tool-icon svg{width:27px;height:27px}.app-tool-card strong{font-size:1rem;margin-top:.3rem}.app-tool-card small{font-size:.74rem;color:var(--wb-muted);line-height:1.6}.app-tool-arrow{position:absolute;top:20px;right:20px;color:var(--wb-muted)}
.app-tool-events .app-tool-icon{background:#f6e9e7;color:#af6558}.app-tool-activities .app-tool-icon{background:#f6eedb;color:#9d7830}.app-tool-public-info .app-tool-icon{background:#e9efe9;color:#60836a}.app-tool-override .app-tool-icon{background:#eee8f5;color:#8c6ba3}
.teacher-native .app-account-card{display:grid;grid-template-columns:48px 1fr;gap:1rem;align-items:center}.app-profile-icon{display:grid;place-items:center;width:48px;height:48px;border-radius:50%;background:var(--wb-secondary);color:var(--wb-muted)}.app-profile-icon svg{width:26px;height:26px}.app-account-card h2{font-size:1rem;margin:0}.app-account-card p{font-size:.75rem;margin:.2rem 0}.app-account-card>button{grid-column:1/-1;width:100%}
.teacher-native .teacher-event-item{padding:1.25rem;border:0;border-radius:18px;background:var(--wb-secondary);margin-bottom:.7rem}.teacher-native .teacher-event-item-head strong{font-size:1rem}.teacher-native .teacher-event-item p{font-size:.85rem}.teacher-native .teacher-event-item-head time{font:inherit;font-size:.7rem}.teacher-native .teacher-event-item-head{flex-wrap:wrap}
.app-student-picker{border-radius:16px;background:var(--wb-secondary);padding:1rem;margin-bottom:1.2rem}.app-student-picker .panel-head{margin-bottom:.7rem}.app-student-picker h3{margin:0}.app-student-picker #hm-event-student-count{font-size:.75rem;color:var(--wb-muted)}
.app-student-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.5rem;max-height:240px;overflow-y:auto;padding:.4rem 0;margin:.4rem 0 1rem;overscroll-behavior:contain}.app-student-option{display:flex!important;align-items:center;gap:.55rem;padding:.65rem;background:var(--app-card);border-radius:12px;min-height:58px;cursor:pointer;margin:0!important}.teacher-native .app-student-option input{width:20px;min-width:20px;height:20px;min-height:20px;padding:0;margin:0}.app-student-option span{display:grid;gap:2px;min-width:0;margin:0!important}.app-student-option strong{font-size:.85rem;color:var(--wb-text);overflow-wrap:anywhere}.app-student-option small{font-size:.65rem;color:var(--wb-muted)}.app-student-option:has(input:checked){outline:1.5px solid var(--app-accent);background:var(--app-tint)}
.app-secondary-settings{padding:.8rem 0;margin:.5rem 0 1rem;border-top:1px solid var(--wb-line)}.app-secondary-settings summary{font-size:.85rem;cursor:pointer;min-height:44px;display:flex;align-items:center}.app-secondary-settings summary::after{content:'⌄';margin-left:auto}
.teacher-native .announcement-panel textarea{min-height:160px}.teacher-native .delivery-panel{margin-top:1.6rem;padding-top:1.25rem;border-color:var(--wb-line)}.teacher-native .announcement-panel>.panel-head h2{font-size:1.3rem}.teacher-native .announcement-panel>.panel-head p{font-size:.83rem}
.app-flow-tabs{display:flex;gap:.5rem;margin:0 0 1.25rem}.app-flow-tabs button{display:flex;align-items:center;justify-content:center;gap:.5rem;flex:1;border:0;border-radius:12px;background:var(--app-card);color:var(--wb-muted);font:inherit;font-size:.83rem;min-height:48px;cursor:pointer;padding:7px}.app-flow-tabs b{font-size:.7rem;width:22px;height:22px;border-radius:50%;background:var(--wb-secondary);display:grid;place-items:center}.app-flow-tabs button.active{color:var(--app-accent);background:var(--app-tint);font-weight:650}.app-flow-tabs button.active b{color:#fff;background:var(--app-accent)}
.teacher-native .cp-heading,.teacher-native .teacher-collage>.panel-head{display:none}.teacher-native .cp-workspace{display:block}.teacher-native .cp-workspace>.panel:not(.is-flow-active){display:none}.teacher-native .cp-people{max-height:430px}.teacher-native .cp-person{border:0;background:var(--wb-secondary);border-radius:14px;min-height:64px}.teacher-native .cp-person input{min-height:20px;width:20px;height:20px;padding:0}.teacher-native .cp-person:has(input:checked){background:var(--app-tint);outline-color:var(--app-accent)}.teacher-native .cp-matter-group button[aria-pressed=true]{background:var(--app-tint);color:var(--app-accent);border-color:var(--app-accent)}
.teacher-native .cp-format select,.teacher-native .cp-format input,.teacher-native .cp-format textarea{margin-bottom:1rem}.teacher-native .cp-options{padding-top:.8rem;margin-bottom:.8rem;border-top:1px solid var(--wb-line)}.teacher-native .cp-result textarea{min-height:240px}.app-flow-next{width:100%;margin-top:1.2rem}.teacher-native .cp-result .panel-head{align-items:center}
.teacher-native .cp-date-button{color:var(--app-accent)}.teacher-native .collage-advanced summary{min-height:44px;display:flex;align-items:center;cursor:pointer}.teacher-native .collage-advanced summary::after{content:'⌄';margin-left:auto}.teacher-native .collage-advanced{margin:.9rem 0}.teacher-native .toast{z-index:150}.teacher-native .manager-header h1{color:var(--wb-text)}
.teacher-native .collage-inline-adjust{margin:0;padding:12px 0;border:0;background:none}.teacher-native .collage-inline-adjust-controls input[type=range]{min-height:30px;padding:0}.teacher-native .collage-inline-adjust-controls{gap:8px}.teacher-native .collage-inline-adjust-head strong{font-size:.85rem;overflow-wrap:anywhere}.teacher-native .collage-inline-adjust-head button{min-height:44px}.teacher-native .collage-canvas-shell{border:0;border-radius:16px;overflow:hidden}
.app-schedule-days{display:none}
.teacher-native .app-library-search{display:block;margin:1rem 0}.teacher-native .teacher-public-list{max-height:none;overflow:visible}.teacher-native .teacher-info-tabs{gap:8px;flex-wrap:wrap}.teacher-native .teacher-info-tabs button.active{background:var(--app-tint);color:var(--app-accent);border-color:transparent}
.teacher-native .teacher-collage .collage-workspace{grid-template-columns:minmax(300px,.9fr) minmax(0,1.1fr);gap:1.15rem}.teacher-native .teacher-collage[data-flow-step="4"] .collage-workspace{grid-template-columns:1fr}.teacher-native .teacher-collage .collage-preview-card{position:sticky;top:130px}.teacher-native .collage-advanced{border:0;background:var(--wb-secondary);padding:12px;border-radius:12px}.teacher-native .collage-section-title{margin-top:1.25rem}.teacher-native .collage-dropzone{min-height:180px;background:var(--app-tint);border:0;border-radius:18px;color:var(--app-accent)}.teacher-native .collage-dropzone strong{font-size:1rem}.teacher-native .teacher-collage .card-title{font-size:1.15rem}.teacher-native .teacher-collage .collage-copy-row{grid-template-columns:40px minmax(0,1fr) 36px}.teacher-native .teacher-collage .collage-preview-card>.actions{margin-top:1.25rem}
.teacher-native .teacher-public-item,.teacher-native .teacher-activity-card,.teacher-native .record{background:var(--wb-secondary);border:0;border-radius:18px;padding:1.2rem}.teacher-native .teacher-public-item h3,.teacher-native .teacher-activity-card h3{font-size:1rem}.teacher-native .teacher-info-tabs button{min-height:44px;font-size:.8rem;border-radius:12px}.teacher-native .teacher-activity-feed{gap:1rem}.teacher-native .schedule-panel .panel-head{align-items:flex-start;flex-wrap:wrap}.teacher-native .schedule-toolbar{flex-wrap:wrap}
@media(max-width:1050px) and (min-width:721px){.teacher-native .manager-shell{padding-left:210px;padding-right:1.25rem}.teacher-native .module-tabs{width:185px}.app-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.teacher-native .teacher-collage .collage-workspace{grid-template-columns:1fr}.teacher-native .teacher-collage .collage-preview-card{position:static}}
@media(max-width:720px){
  .teacher-native .manager-shell{padding:env(safe-area-inset-top) 1rem calc(100px + env(safe-area-inset-bottom));max-width:600px}
  .teacher-native .manager-header{margin:0 -1rem 1.2rem;padding:1rem;gap:.4rem}.teacher-native .manager-header h1{font-size:1.8rem}.teacher-native .teacher-brand{font-size:.65rem;gap:5px}.teacher-native .teacher-brand img{width:16px;height:16px}
  .teacher-native .header-actions{gap:.25rem}.teacher-native .app-class-chip{max-width:110px}.teacher-native .app-class-chip select{font-size:.75rem!important;padding-left:0!important;padding-right:1rem!important}.teacher-native .header-actions .connectivity{display:none}
  .teacher-native .module-tabs{display:none!important}.teacher-native .panel,.teacher-native .teacher-collage .card{padding:1.2rem;border-radius:22px}
  .teacher-native .workbench-tabbar{position:fixed;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));z-index:70;left:0;right:0;bottom:0;margin:0;padding:8px 8px calc(10px + env(safe-area-inset-bottom));background:var(--wb-chrome);border:0;box-shadow:0 -4px 24px rgba(0,0,0,.025);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px)}
  .teacher-native .workbench-tabbar button{display:grid;justify-items:center;align-content:center;gap:5px;min-height:54px;padding:4px 0;font-size:.65rem;font-weight:500;background:none;border-radius:14px;color:var(--wb-muted)}.teacher-native .workbench-tabbar button.active{color:var(--app-accent);background:var(--app-tint);font-weight:650}.teacher-native .workbench-tabbar svg{width:24px;height:24px}
  .teacher-native .mobile-sheet-panel.is-mobile-open{left:0;right:0;bottom:0;top:auto;transform:none;width:100%;max-height:92dvh;padding:1.4rem 1rem calc(1.5rem + env(safe-area-inset-bottom));border-radius:26px 26px 0 0}
  .teacher-native .mobile-sheet-panel .field-grid{grid-template-columns:1fr}.teacher-native .mobile-sheet-panel .panel-head{align-items:start}.teacher-native .mobile-sheet-panel .record-tools>.button{display:none}.teacher-native .mobile-sheet-panel .panel-head p{max-width:28ch}
  .app-todo-overview{padding:1.3rem}.app-hero-icon{width:58px;height:58px;border-radius:18px}.app-todo-overview h2 b{font-size:2.2rem}.app-todo-overview h2{font-size:1.1rem}.app-todo-overview p{font-size:.73rem}
  .app-tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:.75rem}.app-tool-card{padding:1.1rem;min-height:185px}.app-tool-card strong{font-size:.95rem}.app-tool-card small{font-size:.73rem}.app-tool-arrow{top:17px;right:17px}.app-tool-icon{width:42px;height:42px;border-radius:14px}
  .app-flow-tabs{gap:5px;margin-bottom:1rem}.app-flow-tabs button{gap:5px;font-size:.72rem;min-height:50px}.app-flow-tabs b{width:19px;height:19px;font-size:.65rem;flex-shrink:0}
  .teacher-native .teacher-collage .collage-workspace{display:block}.teacher-native .teacher-collage .collage-preview-card{position:static}.teacher-native .teacher-collage .collage-copy-row{grid-template-columns:minmax(0,1fr) 36px}.teacher-native .teacher-collage .collage-copy-row label{grid-column:1/-1}
  .teacher-native .cp-workspace .panel-head{display:flex;justify-content:space-between;align-items:center}.teacher-native .cp-people{max-height:360px}.teacher-native .cp-person strong{font-size:.9rem}.teacher-native .cp-format .cp-date-label{margin-top:0}
}
@media(prefers-color-scheme:dark){.teacher-native{--app-accent:#77cbb1;--app-tint:#263d35}.teacher-native[data-workspace-module=announcement]{--app-accent:#e5ba6e;--app-tint:#3d3425}.teacher-native[data-workspace-module=collage]{--app-accent:#c1a3ec;--app-tint:#332a43}.teacher-native[data-workspace-module=composer]{--app-accent:#9abef0;--app-tint:#26354a}.teacher-native[data-workspace-module=more],.teacher-native[data-workspace-module=events],.teacher-native[data-workspace-module=schedule]{--app-accent:#bdc9d8;--app-tint:#303843}.teacher-native .button.primary,.teacher-native .teacher-collage .btn-primary,.teacher-native .mobile-sheet-trigger strong,.teacher-native .mobile-sheet-trigger b{color:#151719}.app-flow-tabs button.active b{color:#151719}.app-tool-icon{background:var(--wb-secondary)!important;color:var(--wb-text)!important}}
@media(prefers-reduced-transparency:reduce){.teacher-native .manager-header,.teacher-native .module-tabs,.teacher-native .workbench-tabbar{background:var(--wb-surface);backdrop-filter:none;-webkit-backdrop-filter:none}}
.teacher-native .app-tool-card{transition:transform 220ms cubic-bezier(.22,1,.36,1),box-shadow 220ms ease}.teacher-native .app-tool-card:active{transform:scale(.97)}
.teacher-native .app-tool-icon{transition:transform 250ms cubic-bezier(.22,1,.36,1)}.teacher-native .app-flow-tabs button,.teacher-native .app-segment button,.teacher-native .workbench-tabbar button,.teacher-native .module-tab{transition:background-color 200ms ease,color 200ms ease,transform 120ms ease-out}.teacher-native .workbench-tabbar button:active svg{transform:scale(.9)}
.teacher-native .app-student-option,.teacher-native .cp-person{transition:background-color 180ms ease,outline-color 180ms ease}.teacher-native .app-student-option:active,.teacher-native .cp-person:active{background:var(--app-tint)}
@media(hover:hover) and (pointer:fine){.teacher-native .app-tool-card:hover{transform:translateY(-3px);box-shadow:0 9px 24px rgba(30,40,50,.065)}.teacher-native .app-tool-card:hover .app-tool-icon{transform:rotate(-4deg)}.teacher-native .todo-card-trigger:hover .todo-card-heading{color:var(--app-accent)}}
@media(prefers-reduced-motion:reduce){.teacher-native .app-tool-card,.teacher-native .app-tool-icon,.teacher-native .app-flow-tabs button,.teacher-native .app-segment button,.teacher-native .workbench-tabbar button,.teacher-native .module-tab,.teacher-native .app-student-option,.teacher-native .cp-person{transition:none!important;transform:none!important}.teacher-native .workbench-tabbar button:active svg{transform:none}}
@media(prefers-reduced-motion:reduce){.teacher-native *{animation:none!important;scroll-behavior:auto!important}.teacher-native button:active{transform:none}}
@media print{.teacher-native .manager-shell,.teacher-native .mobile-sheet-backdrop,.teacher-native .workbench-tabbar{display:none!important}}

/* 五步拼图：编辑过程中始终展示同一张实时画布。 */
.teacher-native .app-collage-stage[hidden],.teacher-native .collage-controls[hidden],.teacher-native .app-collage-export-actions[hidden],.teacher-native .app-photo-adjust[hidden]{display:none!important}
.app-collage-step-title{font-size:1.05rem;margin:0 0 1rem}
.teacher-native .app-grid-settings{margin:.6rem 0;padding:0;background:none}
.teacher-native .app-grid-settings summary{display:inline-flex;gap:.7rem;min-height:44px;padding:0 12px;border-radius:10px;background:var(--wb-secondary);font-size:.8rem;color:var(--app-accent)}
.teacher-native .app-grid-settings[open]{padding:10px;background:var(--wb-secondary)}
.teacher-native .collage-link-content{margin:0;background:none;padding:0}.teacher-native .collage-link-content>summary{display:none}
.teacher-native .app-detail-list{display:grid;gap:10px}.teacher-native .app-detail-list .todo-accordion-card{display:block;padding:0;margin:0;overflow:hidden;border:1px solid transparent;transition:background-color 240ms ease,border-color 240ms ease,box-shadow 300ms ease}
.teacher-native .app-detail-list .is-expanded{background:var(--app-card);border-color:var(--wb-line);box-shadow:0 8px 24px rgba(30,40,50,.04)}
.teacher-native .app-detail-list .todo-card-header{padding:.8rem 1rem}.teacher-native .app-detail-list .todo-card-heading h3,.teacher-native .app-detail-list .todo-card-heading strong,.teacher-native .app-detail-list .record-title{margin:0;font-size:1rem;font-weight:650;line-height:1.4}
.teacher-native .app-detail-list .todo-card-heading>div{width:100%}.teacher-native .app-detail-list .todo-card-heading h3{order:-1}.teacher-native .app-detail-list .teacher-public-item .todo-card-heading>div{display:flex;flex-direction:column;gap:4px}
.teacher-native .app-detail-list .todo-card-heading span:not(.status),.teacher-native .app-detail-list .todo-card-heading time,.teacher-native .app-detail-list .record-meta,.teacher-native .app-detail-list .record-summary{color:var(--wb-muted);font-size:.72rem}.teacher-native .app-detail-list .todo-card-content h4{font-size:.82rem;margin:1rem 0 .4rem}.teacher-native .app-detail-list .todo-card-content .record-actions{margin-top:1rem;flex-wrap:wrap}
/* 只读课程表：按周展示节次与科目。 */
.teacher-native .teacher-quick-table{min-width:0;table-layout:fixed}.teacher-native .teacher-quick-table th:first-child{width:80px}.teacher-native .teacher-quick-table thead{background:var(--wb-secondary);color:var(--wb-muted)}
.teacher-native .teacher-quick-table th,.teacher-native .teacher-quick-table td{height:56px;text-align:center;padding:8px;border-color:var(--wb-line)}.teacher-native .teacher-quick-table tbody th{font-weight:500;color:var(--wb-muted);font-size:.8rem;background:none}
.lesson-subject-label{font-size:1.2rem;font-weight:650;color:var(--wb-text);overflow-wrap:anywhere}.teacher-native .teacher-quick-table td.app-day-active{background:var(--app-tint)}
@media(max-width:720px){
  .teacher-native .teacher-collage>.app-flow-tabs{overflow-x:auto;justify-content:flex-start;scrollbar-width:none}.teacher-native .teacher-collage>.app-flow-tabs button{flex:none;min-width:90px;flex-direction:column;gap:4px}
  .teacher-native .teacher-collage .collage-workspace{display:flex;flex-direction:column;gap:12px}.teacher-native .teacher-collage .collage-controls,.teacher-native .teacher-collage .collage-preview-card{width:100%;box-sizing:border-box}
  .teacher-native .teacher-collage:not([data-flow-step="4"]) .collage-preview-card{order:-1;position:sticky;top:var(--collage-header-height,90px);z-index:20;padding:12px;border-radius:16px;box-shadow:0 5px 16px rgba(30,40,50,.06)}
  .teacher-native .teacher-collage:not([data-flow-step="4"]) .collage-preview-card:has(.app-grid-settings[open]){position:static}
  .teacher-native .teacher-collage:not([data-flow-step="4"]) .collage-preview-card .card-title{font-size:.85rem}.teacher-native .teacher-collage:not([data-flow-step="4"]) .collage-preview-card .field-help{display:none}.teacher-native .teacher-collage:not([data-flow-step="4"]) #ts-collage-summary{margin:3px 0;font-size:.65rem}
  .teacher-native .teacher-collage:not([data-flow-step="4"]) .collage-canvas-shell{margin-top:4px}.teacher-native .teacher-collage:not([data-flow-step="4"]) canvas{height:23dvh;max-height:220px;width:100%;object-fit:contain}
  .teacher-native .teacher-collage:not([data-flow-step="4"]) .app-grid-settings{position:absolute;right:12px;top:4px}.teacher-native .teacher-collage:not([data-flow-step="4"]) .app-grid-settings[open]{position:static}
}

/* 科目简称让手机也能一次看完整周。 */
.teacher-native .app-schedule-days{display:none!important}
/* Editors use sheets, so the remaining student preview fills the workspace. */
.teacher-native #hm-homework-module .workspace{grid-template-columns:minmax(0,1fr);gap:0;min-width:0}
.teacher-native #hm-preview-panel{width:100%;min-width:0;box-sizing:border-box}
.teacher-native #hm-preview{width:100%;min-width:0;box-sizing:border-box;overflow-wrap:anywhere}
/* Keep legacy public-information header styles away from accordion wrappers. */
.teacher-native .app-detail-list .teacher-public-item-head{align-items:flex-start}
.teacher-native .app-detail-list .teacher-public-item-head>span{padding:0;background:none;font-weight:400}
.teacher-native .app-detail-list .teacher-event-item-head{display:grid;gap:5px;justify-content:start}
.teacher-native .app-detail-list .teacher-event-item-head>div{justify-content:flex-start;gap:7px 10px}
.teacher-native .app-detail-list .teacher-event-item-head time{white-space:nowrap;font-weight:400}
.teacher-native .app-detail-list .teacher-event-item-head small{margin:0;line-height:1.5}
/* Canvas first; compact adjustment rows with visible values. */
.teacher-native .app-photo-adjust{margin-top:16px;padding:0 16px}
.teacher-native .app-photo-adjust>summary{min-height:48px;display:flex;align-items:center;justify-content:space-between;font-size:.85rem;cursor:pointer}
.teacher-native .app-photo-adjust .collage-inline-adjust{padding:0 0 16px}
.teacher-native .app-photo-adjust .collage-inline-adjust-head{align-items:center;gap:12px;margin-bottom:12px}
.teacher-native .app-photo-adjust .collage-inline-adjust-head>div{min-width:0;flex:1}
.teacher-native .app-photo-adjust .collage-inline-adjust-head strong{display:block;font-size:.9rem;line-height:1.4}
.teacher-native .app-photo-adjust .collage-inline-adjust-head span{font-size:.7rem;line-height:1.5;margin-top:3px}
.teacher-native .app-photo-adjust .collage-inline-adjust-head button{flex:none;white-space:nowrap;padding:8px 12px;background:var(--app-card);border:0}
.teacher-native .app-photo-adjust .collage-inline-adjust-controls{grid-template-columns:minmax(0,1fr) auto;gap:8px 24px;align-items:center;margin:0}
.teacher-native .app-photo-adjust .collage-inline-adjust-controls>label{display:grid;grid-template-columns:34px minmax(0,1fr) 42px;align-items:center;gap:10px;margin:0;min-width:0;min-height:44px}
.teacher-native .app-photo-adjust .collage-inline-adjust-controls>label>span{margin:0;font-size:.75rem}
.teacher-native .app-photo-adjust input[type=range]{height:32px;min-height:32px;margin:0;background:none;border:0;cursor:pointer}
.teacher-native .app-photo-adjust output{text-align:right;font-size:.75rem;font-variant-numeric:tabular-nums;color:var(--app-accent)}
.teacher-native .app-photo-adjust .collage-inline-nudge{grid-column:2;grid-row:1/4;justify-self:center;gap:4px;grid-template-columns:repeat(3,36px)}
.teacher-native .app-photo-adjust .collage-nudge button{min-width:36px;min-height:36px;background:var(--app-card);border:1px solid var(--wb-line);border-radius:9px;color:var(--wb-text)}
.teacher-native .teacher-collage[data-flow-step="4"] .collage-preview-card{position:static}
.teacher-native .teacher-collage[data-flow-step="4"] canvas{display:block;width:100%;height:auto;max-height:52dvh;object-fit:contain}
.teacher-native .app-collage-export-actions{display:flex;flex-wrap:wrap;gap:10px;padding-top:16px;border-top:1px solid var(--wb-line)}
.teacher-native #hm-collage-export{margin-top:16px;padding-top:16px;border-top:1px solid var(--wb-line)}
/* Distinguish today's column from the slate table header. */
.teacher-native .teacher-quick-table thead th{background:#34485c;color:#fff;border-color:#536679}
.teacher-native .teacher-quick-table thead th.app-day-active{background:#167963;color:#fff}
.teacher-native .teacher-quick-table thead small{display:block;font-size:.6rem;line-height:1.3;font-weight:400;opacity:.9;color:inherit}
.teacher-native .teacher-quick-table td.app-day-active{background:#dff2eb;border-left-color:#a4d5c5;border-right-color:#a4d5c5}
.teacher-native .teacher-quick-table td.app-day-active .lesson-subject-label{color:#175a49}
@media(prefers-color-scheme:dark){
  .teacher-native .teacher-quick-table thead th{background:#35475b;border-color:#596b7d}
  .teacher-native .teacher-quick-table thead th.app-day-active{background:#226d5a}
  .teacher-native .teacher-quick-table td.app-day-active{background:#213f35;border-color:#3f695b}
  .teacher-native .teacher-quick-table td.app-day-active .lesson-subject-label{color:#a8e4d0}
}
@media(max-width:720px){
  .teacher-native .teacher-quick-wrap{overflow:hidden;border:1px solid var(--wb-line);border-radius:14px;margin-top:1rem}
  .teacher-native #hm-preview-panel{width:auto}
  .teacher-native .teacher-quick-table{display:table;width:100%;min-width:0;border-collapse:collapse;table-layout:fixed}
  .teacher-native .teacher-quick-table thead{display:table-header-group}.teacher-native .teacher-quick-table tbody{display:table-row-group;background:none}
  .teacher-native .teacher-quick-table tr{display:table-row;border:0;padding:0}
  .teacher-native .teacher-quick-table th,.teacher-native .teacher-quick-table td,.teacher-native .teacher-quick-table td:not(.app-day-active){display:table-cell;height:48px;text-align:center;vertical-align:middle;padding:5px 2px;border-right:1px solid var(--wb-line);border-bottom:1px solid var(--wb-line);margin:0}
  .teacher-native .teacher-quick-table th:first-child{width:48px}.teacher-native .teacher-quick-table thead th{height:38px;font-size:.7rem;font-weight:500}.teacher-native .teacher-quick-table tbody th{font-size:.67rem;white-space:nowrap}
  .teacher-native .teacher-quick-table td.app-day-active{padding:5px 2px;text-align:center}.teacher-native .teacher-quick-table .lesson-subject-label{font-size:1rem}.teacher-native #hm-quick-note{font-size:.65rem;line-height:1.7;margin:.8rem 0 0}
  .teacher-native .app-photo-adjust .collage-inline-adjust-controls{grid-template-columns:minmax(0,1fr);gap:4px}
  .teacher-native .app-photo-adjust .collage-inline-nudge{display:flex;grid-column:1;grid-row:auto;margin-top:8px;gap:6px}.teacher-native .app-photo-adjust .collage-inline-nudge>span{display:none}.teacher-native .app-photo-adjust .collage-nudge button{min-width:40px;min-height:44px}.teacher-native .app-photo-adjust .collage-inline-nudge button[aria-label="向左移动"]{order:1}.teacher-native .app-photo-adjust .collage-inline-nudge button[aria-label="向上移动"]{order:2}.teacher-native .app-photo-adjust .collage-inline-nudge button[aria-label="恢复居中"]{order:3}.teacher-native .app-photo-adjust .collage-inline-nudge button[aria-label="向下移动"]{order:4}.teacher-native .app-photo-adjust .collage-inline-nudge button[aria-label="向右移动"]{order:5}
  .teacher-native .app-collage-export-actions>.btn{flex:1;min-width:130px}
}