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10px;border-radius:8px;font-size:12px;gap:6px}.nvr-btn--block{width:100%}.nvr-btn--primary{background:var(--nvr-accent);color:#fff;font-weight:600}.nvr-btn--primary:hover:not(:disabled){background:var(--nvr-accent-hover)}.nvr-btn--outline{background:var(--nvr-surface);border-color:var(--nvr-line);color:var(--nvr-body)}.nvr-btn--outline:hover:not(:disabled){background:var(--nvr-line-soft)}.nvr-btn--ghost{background:var(--nvr-line-soft);color:var(--nvr-ink)}.nvr-btn--ghost:hover{background:var(--nvr-line)}.nvr-btn--danger{background:var(--nvr-danger);color:#fff;font-weight:600}.nvr-btn--danger:hover{background:var(--nvr-danger-hover)}.nvr-btn--danger-soft{background:#fef2f2;border-color:#fecaca;color:var(--nvr-danger-hover);font-weight:600}.nvr-btn--danger-soft:hover{background:#fee2e2}.nvr-icon-btn{width:32px;height:32px;flex-shrink:0;border-radius:8px;border:none;background:transparent;color:var(--nvr-muted);display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.nvr-icon-btn:hover,.nvr-icon-btn.is-active{background:var(--nvr-line-soft);color:var(--nvr-ink)}.nvr-panel{flex:0 0 360px;min-width:0;display:flex;flex-direction:column;border-radius:20px;background:var(--nvr-surface);border:1px solid var(--nvr-line);overflow:hidden}.nvr-tabs{display:flex;gap:4px;padding:8px;border-bottom:1px solid var(--nvr-line);align-items:center}.nvr-tab{flex:1;height:40px;border-radius:10px;border:none;background:transparent;color:var(--nvr-body);display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:14px;font-weight:500;cursor:pointer}.nvr-tab:hover{background:var(--nvr-line-soft)}.nvr-tab.is-active{background:var(--nvr-accent-soft);color:var(--nvr-accent-ink);font-weight:600}.nvr-tab__count{font-size:11px;font-weight:600;padding:1px 6px;border-radius:999px;background:var(--nvr-line);color:var(--nvr-body)}.nvr-tab.is-active .nvr-tab__count{background:var(--nvr-accent);color:#fff}.nvr-tab__close{display:none;width:36px;height:36px;border-radius:10px;border:none;background:transparent;color:var(--nvr-muted);align-items:center;justify-content:center;cursor:pointer}.nvr-panel__body{flex:1;min-height:0;overflow-y:auto;display:flex;flex-direction:column}.nvr-section-label{padding:12px 16px 8px;font-size:12px;font-weight:600;color:var(--nvr-muted);letter-spacing:.04em;text-transform:uppercase}.nvr-section-label--flush{padding:4px 0 0}.nvr-empty{margin:auto;padding:24px;text-align:center;font-size:14px;color:var(--nvr-muted)}.nvr-hands{margin:12px;padding:12px;border-radius:12px;background:#fffbeb;border:1px solid #fde68a;display:flex;flex-direction:column;gap:10px}.nvr-hands__title{font-size:13px;font-weight:600;color:#92400e}.nvr-hands__row{display:flex;align-items:center;gap:10px}.nvr-hands__name{flex:1;min-width:0;font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nvr-person{border-top:1px solid var(--nvr-line-soft)}.nvr-person__row{display:flex;align-items:center;gap:10px;padding:10px 16px}.nvr-person__text{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.nvr-person__name{font-size:14px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nvr-person__tags{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.nvr-person__mic{width:28px;height:28px;flex-shrink:0;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#a1a1aa}.nvr-person__mic.is-on{color:#15803d;background:#f0fdf4}.nvr-person__actions{margin:0 16px 12px;padding:10px 12px;border-radius:10px;background:#fafafa;border:1px solid var(--nvr-line);display:flex;gap:6px;flex-wrap:wrap}.nvr-tag{font-size:11px;font-weight:500;padding:2px 7px;border-radius:6px;background:var(--nvr-line-soft);color:var(--nvr-body);white-space:nowrap}.nvr-tag--teacher{background:var(--nvr-accent-soft-2);color:var(--nvr-accent-ink);font-weight:600}.nvr-tag--muted{background:var(--nvr-line-soft);color:var(--nvr-muted)}.nvr-chat{flex:1;min-height:0;display:flex;flex-direction:column}.nvr-chat__list{flex:1;min-height:0;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:14px}.nvr-msg{display:flex;gap:10px}.nvr-msg__body{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.nvr-msg__head{display:flex;align-items:baseline;gap:8px}.nvr-msg__name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nvr-msg__time{margin-left:auto;font-size:11px;color:var(--nvr-muted);font-variant-numeric:tabular-nums}.nvr-msg__bubble{font-size:14px;line-height:1.45;padding:8px 12px;border-radius:4px 12px 12px;background:var(--nvr-line-soft);color:var(--nvr-ink);overflow-wrap:anywhere;white-space:pre-wrap}.nvr-msg__bubble.is-teacher{background:var(--nvr-accent-soft)}.nvr-chat__form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--nvr-line)}.nvr-input{flex:1;min-width:0;height:44px;padding:0 14px;border-radius:12px;border:1px solid var(--nvr-line);background:#fafafa;font:inherit;font-size:14px;color:var(--nvr-ink)}.nvr-input:focus{background:#fff;border-color:var(--nvr-accent);outline:none}.nvr-send{width:44px;height:44px;flex-shrink:0;border-radius:12px;border:none;background:var(--nvr-accent);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}.nvr-send:hover:not(:disabled){background:var(--nvr-accent-hover)}.nvr-send:disabled{opacity:.5;cursor:not-allowed}.nvr-attendance{padding:16px;gap:14px}.nvr-attendance__head{display:flex;align-items:center;gap:10px}.nvr-attendance__head>span:last-child{display:flex;flex-direction:column}.nvr-attendance__icon{width:40px;height:40px;border-radius:12px;background:var(--nvr-accent-soft-2);color:var(--nvr-accent-hover);display:flex;align-items:center;justify-content:center}.nvr-attendance__title{font-size:15px;font-weight:600}.nvr-attendance__sub{font-size:12px;color:var(--nvr-muted)}.nvr-notice{display:flex;gap:10px;padding:12px;border-radius:12px;background:var(--nvr-accent-soft);color:var(--nvr-accent-ink);font-size:13px;line-height:1.45}.nvr-notice svg{flex-shrink:0;margin-top:1px}.nvr-att-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-top:1px solid var(--nvr-line-soft)}.nvr-att-row__text{flex:1;min-width:0;display:flex;flex-direction:column}.nvr-att-row__detail{font-size:12px;color:var(--nvr-muted)}.nvr-toasts{position:fixed;top:76px;left:50%;transform:translate(-50%);z-index:50;display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none}.nvr-toast{padding:10px 16px;border-radius:12px;background:var(--nvr-ink);color:#fff;font-size:14px;font-weight:500;box-shadow:0 12px 40px #0003;animation:nvr-toast-in .2s ease;max-width:min(92vw,480px)}.nvr-toast--success{background:#166534}.nvr-toast--error{background:var(--nvr-danger-hover)}.nvr-toast--hand{background:var(--nvr-hand);color:var(--nvr-ink)}@keyframes nvr-toast-in{0%{opacity:0;transform:translateY(-6px)}}.nvr-dialog-backdrop{position:fixed;inset:0;z-index:60;background:#18181b73;display:flex;align-items:center;justify-content:center;padding:16px}.nvr-dialog{width:100%;max-width:420px;padding:24px;border-radius:20px;background:var(--nvr-surface);box-shadow:0 24px 60px #00000040}.nvr-dialog__title{margin:0 0 8px;font-size:18px;font-weight:700}.nvr-dialog__text{margin:0 0 20px;font-size:14px;line-height:1.5;color:var(--nvr-body)}.nvr-dialog__actions{display:flex;justify-content:flex-end;gap:8px}@media(max-width:1100px){.nvr-ctl--panel{display:inline-flex}.nvr-ctl--label span{display:none}.nvr-panel{position:fixed;top:64px;right:0;bottom:0;width:min(380px,100vw);z-index:40;border-radius:20px 0 0 20px;box-shadow:-12px 0 40px #00000026}.nvr-tab__close{display:inline-flex}}@media(max-width:720px){.nvr-header{padding:0 12px}.nvr-header__divider,.nvr-code,.nvr-me__text,.nvr-brand__name,.nvr-brand__badge{display:none}.nvr-body{padding:8px;gap:8px}.nvr-strip{height:96px;grid-auto-columns:minmax(120px,160px);gap:8px}.nvr-controls{justify-content:center;padding:8px}.nvr-btn{padding:0 10px;font-size:13px}.nvr-stage__pip{width:132px}}