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.3rem}.student-fig-svg{display:inline-flex;align-items:center;justify-content:center;height:24px}.student-fig-svg svg{height:24px;width:auto;color:var(--accent-cyan)}.student-fig-label{font-size:.7rem;font-weight:600;color:#cbd5e1}.student-speedup-hint{text-align:center;font-size:.78rem;color:var(--text-muted);background:#e8b84b14;border:1px dashed rgba(232,184,75,.3);border-radius:10px;padding:.55rem .85rem}.student-speedup-hint strong{color:var(--color-gold-light)}.share-modal-card{max-width:500px}.share-title-input,.share-url-input{width:100%;background:#0b0f19;border:1px solid var(--border-color);border-radius:8px;padding:.55rem .75rem;color:var(--text-main);font-family:var(--font-family);font-size:.84rem;outline:none;user-select:text;-webkit-user-select:text;transition:border-color .15s ease}.share-title-input:focus,.share-url-input:focus{border-color:var(--accent-cyan)}.share-url-input{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:.76rem;color:#c4b5fd;cursor:pointer}.share-summary-header{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:.4rem}.share-mode-tag{font-size:.7rem;font-weight:700;color:var(--color-gold-light);background:#e8b84b24;border:1px solid rgba(232,184,75,.35);padding:.15rem .5rem;border-radius:6px}.share-meta-pills{display:flex;flex-wrap:wrap;gap:.4rem}.share-meta-pill{background:#0b0f19;border:1px solid var(--border-color);border-radius:6px;padding:.25rem .55rem;font-size:.75rem;color:var(--text-muted)}.share-meta-pill strong{color:#f8fafc}.share-figures-preview{display:grid;grid-template-columns:repeat(auto-fill,minmax(76px,1fr));gap:.4rem;max-height:150px;overflow-y:auto;padding:.2rem 0}.share-figure-chip{background:#0b0f19;border:1px solid rgba(124,58,237,.3);border-radius:8px;padding:.3rem .25rem;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.15rem}.share-figure-svg{height:36px;display:flex;align-items:center;justify-content:center}.share-figure-svg svg{height:34px;width:auto;color:var(--accent-cyan)}.share-figure-name{font-size:.62rem;color:#cbd5e1;text-align:center;line-height:1.1;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.share-lock-note{display:flex;align-items:flex-start;gap:.45rem;font-size:.73rem;color:var(--text-muted);line-height:1.35;background:#7c3aed14;border-radius:8px;padding:.45rem .6rem}.share-lock-note svg{color:var(--accent-cyan);flex-shrink:0;margin-top:1px}.share-footer{gap:.6rem}.btn-copy-link{display:inline-flex;align-items:center;gap:.4rem}.btn-copy-link.copied{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 2px 12px #10b98173}@media (max-width: 768px){.tab-btn.btn-share-tab{padding:.28rem .52rem;height:28px;margin-left:.05rem;display:inline-flex;align-items:center;gap:.2rem}.tab-btn.btn-share-tab svg{width:14px;height:14px;margin-right:0!important}.student-mode-badge{padding:.25rem .5rem;height:28px;border-radius:999px;font-size:.72rem}body.is-student-mode .level-indicator h2{display:block;font-size:.78rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:115px}.student-figures-strip{display:none!important}}.tempo-pill.mode-pill{gap:.32rem;padding:.25rem .65rem;border-color:#94a3b840;color:var(--text-muted)}.tempo-pill.mode-pill svg{color:var(--text-muted);transition:color .15s ease}.mode-pill-val{font-size:.8rem;font-weight:700;color:#cbd5e1;white-space:nowrap}.tempo-pill.mode-pill.is-active-cr{border-color:var(--color-gold);background:#e8b84b24;box-shadow:0 0 12px #e8b84b33}.tempo-pill.mode-pill.is-active-cr svg,.tempo-pill.mode-pill.is-active-cr .mode-pill-val{color:var(--color-gold-light)}.cfg-cr-subpanel{display:flex;flex-direction:column;gap:.5rem;background:#0b0f19a6;border:1px dashed rgba(232,184,75,.3);border-radius:8px;padding:.55rem .7rem;margin-top:.2rem}.cfg-subtext-label{font-size:.76rem;font-weight:600;color:#cbd5e1}@media (max-width: 768px){.tempo-pill.mode-pill{padding:.25rem .45rem;gap:.25rem}.mode-pill-val{font-size:.76rem}}.live-dot{width:9px;height:9px;border-radius:50%;background:#f59e0b;box-shadow:0 0 8px #f59e0bb3;display:inline-block;flex-shrink:0;animation:livePulse 1.8s infinite ease-in-out}.live-dot.is-online{background:#10b981;box-shadow:0 0 10px #10b981d9}@keyframes livePulse{0%,to{transform:scale(1);opacity:1}50%{transform:scale(1.25);opacity:.7}}.student-live-pill{display:inline-flex;align-items:center;gap:.4rem;background:#10b98124;border:1px solid rgba(16,185,129,.45);color:#6ee7b7;font-size:.76rem;font-weight:700;padding:.32rem .65rem;border-radius:8px;white-space:nowrap}.tab-btn.btn-switch-teacher{background:#e8b84b1f;border:1px solid rgba(232,184,75,.4);color:var(--color-gold-light);font-size:.78rem;font-weight:700;padding:.35rem .7rem;display:inline-flex;align-items:center;gap:.25rem}.tab-btn.btn-switch-teacher:hover{background:#e8b84b3d;border-color:var(--color-gold);color:#fff;transform:translateY(-1px)}.teacher-live-banner{background:linear-gradient(135deg,#10b9811f,#7c3aed29);border:1px solid rgba(16,185,129,.38);border-radius:14px;padding:.65rem 1rem;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem;box-shadow:0 6px 20px #00000059}.teacher-live-info{display:flex;align-items:center;gap:.65rem}.teacher-live-texts{display:flex;flex-direction:column;gap:.1rem}.teacher-live-title-row{display:flex;align-items:center;gap:.45rem}.teacher-live-tag{font-size:.68rem;font-weight:800;letter-spacing:.04em;color:#6ee7b7;background:#10b9812e;border:1px solid rgba(16,185,129,.4);padding:.1rem .45rem;border-radius:5px}.teacher-live-room{font-size:.73rem;font-weight:700;color:var(--color-gold-light);font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.teacher-live-status{font-size:.8rem;font-weight:600;color:#f1f5f9}.teacher-live-actions{display:flex;align-items:center;flex-wrap:wrap;gap:.45rem}.btn-live-ctrl{background:#151d30;border:1px solid rgba(148,163,184,.28);color:#e2e8f0;font-size:.76rem;font-weight:700;padding:.36rem .7rem;border-radius:8px;cursor:pointer;display:inline-flex;align-items:center;gap:.35rem;transition:all .15s ease}.btn-live-ctrl:hover{background:#1e293b;border-color:var(--accent-cyan);color:#fff;transform:translateY(-1px)}.btn-live-ctrl.is-audio-on{border-color:#10b98173;color:#6ee7b7;background:#10b9811f}.btn-live-ctrl.is-audio-muted{border-color:#f59e0b73;color:#fcd34d;background:#f59e0b1f}.btn-live-ctrl.btn-live-exit{border-color:#ef444466;color:#fca5a5;background:#ef44441a}.btn-live-ctrl.btn-live-exit:hover{background:#ef444438;border-color:#ef4444;color:#fff}.btn-live-monitor-start{display:inline-flex;align-items:center;gap:.4rem;background:linear-gradient(135deg,#059669,#10b981);box-shadow:0 2px 12px #10b98159}.btn-live-monitor-start:hover{box-shadow:0 4px 16px #10b9818c}.live-toast{position:fixed;bottom:1.35rem;right:1.35rem;background:#0f172af2;border:1px solid rgba(16,185,129,.5);color:#f8fafc;padding:.65rem 1.05rem;border-radius:12px;font-size:.82rem;font-weight:700;box-shadow:0 10px 30px #000000a6,0 0 18px #10b98140;z-index:250;align-items:center;gap:.5rem;animation:popIn .2s ease-out forwards}@media (max-width: 768px){.teacher-live-banner{padding:.45rem .65rem;gap:.45rem}.teacher-live-status{font-size:.72rem}.btn-live-ctrl{padding:.28rem .5rem;font-size:.7rem}.tab-btn.btn-switch-teacher{padding:.25rem .5rem;font-size:.7rem;height:28px}.student-live-pill{padding:.22rem .45rem;font-size:.68rem;height:28px}}