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- 32px)}.drawing-dialog .drawing-card{width:100%;max-height:calc(100dvh - 32px);padding:24px}.drawing-tool-row{flex-wrap:wrap;align-items:center;gap:10px;margin-top:20px;display:flex}.drawing-tool-group{background:#f0f5f2;border-radius:10px;flex-wrap:wrap;gap:4px;padding:4px;display:flex}.drawing-tool-group button,.drawing-axes-toggle,.drawing-edit-actions button{color:#5c7469;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:7px;padding:7px 11px;font-size:12px}.drawing-tool-group button[aria-pressed=true]{color:#225c4c;background:#fff;box-shadow:0 1px 5px #254c3815}.drawing-axes-toggle{background:#fff;border-color:#d8e5dd}.drawing-axes-toggle[aria-pressed=true]{color:#225c4c;background:#e9f4ee;border-color:#79ac97}.drawing-options{color:#657b70;flex-wrap:wrap;align-items:center;gap:12px 18px;margin-top:14px;font-size:12px;display:flex}.drawing-options label{align-items:center;gap:6px;display:inline-flex}.drawing-options input{accent-color:#247e71}.drawing-options select{color:#405e51;background:#fff;border:1px solid #d8e5dd;border-radius:6px;padding:4px 6px}.drawing-palette{gap:7px;display:flex}.drawing-palette button{background:var(--swatch);cursor:pointer;border:3px solid #fff;border-radius:50%;width:23px;height:23px;padding:0;box-shadow:0 0 0 1px #e0e7e2}.drawing-palette button[aria-pressed=true]{box-shadow:0 0 0 2px var(--swatch)}.drawing-tool-hint{color:#718479;min-height:20px;margin:14px 0 8px;font-size:12px;line-height:1.7}.drawing-dialog .drawing-card canvas{margin-top:0}.drawing-dialog canvas:focus-visible{outline-offset:3px;outline:2px solid #247e71}.drawing-edit-actions{flex-wrap:wrap;align-items:center;gap:6px;margin-top:10px;display:flex}.drawing-edit-actions button{background:#f7faf8;border-color:#dde7e1}.drawing-edit-actions span{color:#88988f;margin-left:auto;font-size:11px}.drawing-edit-actions button:disabled,.drawing-tool-row button:disabled{opacity:.45;cursor:default}@media (max-width:767px){.profile-dialog.drawing-dialog{width:calc(100% - 20px)}.drawing-dialog .drawing-card{max-height:calc(100dvh - 20px);padding:16px}.drawing-tool-group button,.drawing-axes-toggle{padding:8px}.drawing-tool-row{gap:8px}.drawing-options{gap:12px}.drawing-edit-actions span{width:100%;margin:4px 0 0}}.teaching-drawing{background:#fff;border:1px solid #dce9e3;border-radius:16px;margin:14px 0;overflow:hidden}.teaching-drawing-header{color:#294b41;border-bottom:1px solid #e7eee9;justify-content:space-between;align-items:center;gap:12px;padding:13px 16px;display:flex}.teaching-drawing-header strong{overflow-wrap:anywhere;min-width:0;font-size:14px}.teaching-drawing-header>div{flex-shrink:0;gap:8px;display:flex}.teaching-drawing-header button,.draw-explanation-button{color:#477263;cursor:pointer;background:#f6faf8;border:1px solid #dce9e3;border-radius:7px;align-items:center;gap:5px;padding:5px 9px;font-size:12px;display:inline-flex}.teaching-drawing-header button:hover,.draw-explanation-button:hover:not(:disabled){background:#e9f3ed}.draw-explanation-button:disabled{opacity:.5;cursor:default}.teaching-drawing-canvas{padding:10px 8px 0}.teaching-drawing figcaption{color:#6b8077;padding:0 16px 14px;font-size:12px;line-height:1.75}.teaching-drawing figcaption p{white-space:pre-wrap;margin:6px 0 0}.teaching-drawing-legend{color:#405f52;flex-wrap:wrap;gap:8px 20px;display:flex}.teaching-drawing-legend span{align-items:center;gap:7px;display:inline-flex}.teaching-drawing-legend i{border-radius:2px;width:17px;height:3px}.function-graph-controls{color:#405f52;justify-content:flex-end;align-items:center;gap:10px;font:11px system-ui,sans-serif;display:flex}.function-graph-controls label{white-space:nowrap;align-items:center;gap:4px;display:inline-flex}.function-graph-controls input{accent-color:#247e71;margin:0}.function-graph-controls select{color:#405f52;background:#fff;border:1px solid #dce9e3;border-radius:5px;max-width:105px;padding:2px 4px;font-size:11px}.teaching-drawing-dialog{color:#405f52;background:#fff;border:1px solid #dce9e3;border-radius:16px;width:min(1100px,100vw - 24px);max-height:calc(100dvh - 32px);padding:0;overflow:auto}.teaching-drawing-dialog::backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#142c26a6}.teaching-drawing-dialog>p{white-space:pre-wrap;padding:0 20px 16px;font-size:13px;line-height:1.75}@media (max-width:480px){.teaching-drawing-header{align-items:flex-start;padding:12px}.teaching-drawing-header>div{gap:4px}.teaching-drawing-header button{padding:4px 6px;font-size:11px}}@keyframes voice-call-breathe{0%,to{transform:scale(1)}50%{transform:scale(1.035)}}@keyframes voice-call-speak{0%{transform:scale(1)}to{transform:scale(1.075)}}@keyframes voice-call-spin{to{transform:rotate(388deg)}}@keyframes voice-call-spin-reverse{to{transform:rotate(-384deg)}}@media (max-width:767px){.voice-call-entry{padding:8px 10px}.voice-call-entry>span:last-child{display:none}.voice-call-backdrop{align-items:end;padding:0}.voice-call-card{border-radius:28px 28px 0 0;width:100%;min-height:min(720px,100dvh)}.voice-call-stage{min-height:310px}}