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1.125rem;min-height:44px;min-width:44px;cursor:pointer;transition:all .2s cubic-bezier(.4,0,.2,1);display:inline-flex;align-items:center;justify-content:center;gap:.5rem;position:relative}._button_i3ygh_1:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}._button_i3ygh_1:disabled{cursor:not-allowed;opacity:.5}._primary_i3ygh_56{background:var(--brand-gradient, linear-gradient(135deg, #0f766e 0%, #0a635b 100%));color:#fff;box-shadow:0 1px 3px #0000001a}[data-theme=dark] ._primary_i3ygh_56{background:var(--color-primary);color:#0b1220}._primary_i3ygh_56:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 10px 15px -3px #0000001a}._primary_i3ygh_56:not(:disabled):active{transform:translateY(1px);box-shadow:0 1px 2px #0000000d}._secondary_i3ygh_78{background-color:var(--color-surface);color:var(--color-text);border:2px solid var(--color-border);box-shadow:0 1px 2px 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._followUpChip_gfvv4_166:hover{border-color:var(--teal-400);color:var(--teal-200)}._userColumn_gfvv4_193{display:flex;flex-direction:column;align-items:flex-end;width:100%}._messageImage_gfvv4_200{max-width:100%;display:block}._imageLoading_gfvv4_205{padding:12px;color:#666;font-size:14px;font-style:italic}._imageError_gfvv4_212{display:flex;align-items:center;gap:8px;padding:16px;border-radius:8px;font-size:.875rem}._imageErrorLight_gfvv4_221{background-color:var(--color-bg);border:1px dashed #cbd5e1;color:#64748b}._imageErrorDark_gfvv4_227{background-color:#33415580;border:1px dashed #475569;color:#94a3b8}._imageErrorIcon_gfvv4_233{font-size:1.25rem;opacity:.7}._imageErrorText_gfvv4_238{font-style:italic}._userImageError_gfvv4_16{display:flex;align-items:center;gap:8px;padding:12px;background-color:#ffffff26;border-radius:8px;font-size:.8125rem;color:#ffffffe6;font-style:italic}._assistantImage_gfvv4_254{width:400px;max-width:100%}._userImage_gfvv4_16{width:280px;max-width:100%}@media(max-width:640px){._assistantImage_gfvv4_254{width:100%;max-width:280px}._userImage_gfvv4_16{width:100%;max-width:200px}}._documentLink_gfvv4_276{display:flex;align-items:center;gap:8px;padding:12px;border-radius:8px;text-decoration:none;color:inherit}._documentLinkLight_gfvv4_286{background-color:#00000008;border:1px solid var(--color-border)}._documentLinkDark_gfvv4_291{background-color:#ffffff0d;border:1px solid var(--color-border)}._documentIcon_gfvv4_296{font-size:1.5rem}._documentName_gfvv4_300{font-size:.875rem;font-weight:500}._documentHint_gfvv4_305{font-size:.75rem;opacity:.7}._userDocumentPreview_gfvv4_310{display:flex;align-items:center;gap:8px;padding:8px 12px;background-color:#ffffff26;border-radius:8px}._userDocumentIcon_gfvv4_319{font-size:1.25rem}._userDocumentName_gfvv4_323{font-size:.875rem}._preWrap_gfvv4_327{white-space:pre-wrap}._translationBox_gfvv4_331{margin-top:8px;padding:8px 12px;font-size:.8125rem;font-style:italic;max-width:100%}._translationBoxLight_gfvv4_339{color:#64748b;border-left:3px solid var(--color-border)}._translationBoxDark_gfvv4_344{color:#94a3b8;border-left:3px solid var(--color-border)}._translationLanguage_gfvv4_349{font-size:.6875rem;font-weight:600;margin-bottom:4px;text-transform:uppercase;letter-spacing:.05em}._actionsRow_gfvv4_362{display:flex;align-items:center;gap:4px;margin-left:-8px}._listenButton_gfvv4_375{min-height:36px;padding:0 12px;border-radius:8px;font-size:.875rem;font-weight:500;display:flex;align-items:center;gap:6px;transition:background .15s,color .15s;border:none}@media(max-width:640px){._listenButton_gfvv4_375{padding:10px 16px;min-height:44px;font-size:.875rem}}._listenButtonDefault_gfvv4_396{cursor:pointer}._listenButtonDisabled_gfvv4_400{cursor:not-allowed;opacity:.7}._listenButtonGenerating_gfvv4_405{animation:_pulse_gfvv4_1 1.5s ease-in-out infinite}@keyframes _pulse_gfvv4_1{0%,to{opacity:.7}50%{opacity:1}}._spinnerIcon_gfvv4_414{display:inline-block;animation:_spin_gfvv4_414 1s linear infinite}@keyframes _spin_gfvv4_414{0%{transform:rotate(0)}to{transform:rotate(360deg)}}._listenButtonDefaultLight_gfvv4_429,._listenButtonDefaultDark_gfvv4_430{background:transparent;border:none;color:var(--color-text)}._listenButtonDefaultLight_gfvv4_429:hover,._listenButtonDefaultDark_gfvv4_430:hover{background:var(--color-muted)}._listenButtonPlayingLight_gfvv4_443,._listenButtonPlayingDark_gfvv4_444{background:transparent;border:none;color:var(--color-danger-strong)}._listenIcon_gfvv4_450{font-size:1rem}._timestamp_gfvv4_454{font-size:.6875rem}._timestampLight_gfvv4_458{color:#94a3b8}._timestampDark_gfvv4_462{color:#64748b}._userTimestamp_gfvv4_466{margin-top:4px;padding-right:4px}@keyframes _messageSlide_gfvv4_1{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}._markdownContent_gfvv4_482 p{margin:0 0 10px}._markdownContent_gfvv4_482 p:last-child{margin-bottom:0}._markdownContent_gfvv4_482 ul,._markdownContent_gfvv4_482 ol{margin:0 0 12px;padding-left:24px}._markdownContent_gfvv4_482 li{margin-bottom:4px}._markdownContent_gfvv4_482 code{padding:2px 6px;border-radius:4px;font-size:.875em;font-family:Monaco,Menlo,monospace}._markdownContentLight_gfvv4_507 code{background:#0000000d}._markdownContentDark_gfvv4_511 code{background:#ffffff1a}._markdownContent_gfvv4_482 pre{padding:12px;border-radius:8px;overflow-x:auto;margin:12px 0}._markdownContentLight_gfvv4_507 pre{background:#0000000d;border:1px solid var(--color-border)}._markdownContentDark_gfvv4_511 pre{background:#0000004d;border:1px solid var(--color-border)}._markdownContent_gfvv4_482 pre code{background:none;padding:0}._markdownContent_gfvv4_482 h1,._markdownContent_gfvv4_482 h2,._markdownContent_gfvv4_482 h3{margin:16px 0 8px;font-weight:600}._markdownContent_gfvv4_482 h1{font-size:1.25rem}._markdownContent_gfvv4_482 h2{font-size:1.125rem}._markdownContent_gfvv4_482 h3{font-size:1rem}._markdownContent_gfvv4_482 blockquote{margin:12px 0;padding-left:12px;opacity:.9}._markdownContent_gfvv4_482 strong{font-weight:600}._disclaimer_gfvv4_566{display:flex;align-items:flex-start;gap:8px;margin-top:12px;padding:10px 12px;border-radius:8px;font-size:.8125rem;line-height:1.4;font-style:italic}._disclaimerLight_gfvv4_578{background-color:var(--color-bg);border:1px solid var(--color-border);color:#64748b}._disclaimerDark_gfvv4_584{background-color:#33415580;border:1px solid #475569;color:#94a3b8}._disclaimerIcon_gfvv4_590{flex-shrink:0;font-size:.875rem;font-style:normal}._disclaimerText_gfvv4_596{flex:1}._markdownContent_gfvv4_482 .katex{font-size:1.1em}._markdownContent_gfvv4_482 .katex-display{margin:1em 0;text-align:center;overflow-x:auto;overflow-y:hidden}._markdownContentDark_gfvv4_511 .katex{color:#f1f5f9}._markdownContentDark_gfvv4_511 .katex .mord.text{color:#f1f5f9!important}._markdownContentDark_gfvv4_511 .katex .mrel,._markdownContentDark_gfvv4_511 .katex .mbin,._markdownContentDark_gfvv4_511 .katex .mop{color:#f1f5f9}._markdownContentLight_gfvv4_507 .katex{color:#0f172a}._markdownContentLight_gfvv4_507 .katex .mord.text{color:#0f172a!important}@media(max-width:640px){._markdownContent_gfvv4_482 .katex{font-size:1em}._markdownContent_gfvv4_482 .katex-display{font-size:.95em}}._errorContainer_gfvv4_648{display:flex;align-items:center;gap:8px;padding:12px 16px;border-radius:8px;margin-bottom:12px;font-size:14px}._errorLight_gfvv4_658{background-color:#fff3cd;color:#856404;border:1px solid #ffeeba}._errorDark_gfvv4_664{background-color:#3d3d00;color:#ffc107;border:1px solid #665d1e}._errorIcon_gfvv4_670{font-size:16px}._suggestedVideos_gfvv4_674{margin-top:12px;padding-top:12px;border-top:1px solid rgba(128,128,128,.2)}._suggestedVideosLabel_gfvv4_680{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px}._suggestedVideosLabelLight_gfvv4_688{color:#6b7280}._suggestedVideosLabelDark_gfvv4_692{color:#9ca3af}._suggestedVideosList_gfvv4_696{display:flex;flex-direction:column;gap:6px}._suggestedVideoCard_gfvv4_702{display:flex;align-items:center;gap:10px;padding:8px;border-radius:8px;border:1px solid;cursor:pointer;transition:all .15s ease;text-align:left;width:100%;font-family:inherit}._suggestedVideoCardLight_gfvv4_716{background:#f9fafb;border-color:#e5e7eb}._suggestedVideoCardLight_gfvv4_716:hover{background:#f3f4f6;border-color:#d1d5db}._suggestedVideoCardDark_gfvv4_726{background:#ffffff0d;border-color:#ffffff1a}._suggestedVideoCardDark_gfvv4_726:hover{background:#ffffff14;border-color:#fff3}._suggestedVideoThumb_gfvv4_736{width:56px;height:42px;border-radius:4px;object-fit:cover;flex-shrink:0}._suggestedVideoThumbPlaceholder_gfvv4_744{width:56px;height:42px;border-radius:4px;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:16px}._suggestedVideoThumbPlaceholderLight_gfvv4_755{background:#e5e7eb;color:#6b7280}._suggestedVideoThumbPlaceholderDark_gfvv4_760{background:#ffffff1a;color:#9ca3af}._suggestedVideoInfo_gfvv4_765{flex:1;min-width:0;overflow:hidden}._suggestedVideoTitle_gfvv4_771{font-size:.8125rem;font-weight:500;line-height:1.3;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}._suggestedVideoTitleLight_gfvv4_780{color:#111827}._suggestedVideoTitleDark_gfvv4_784{color:#f3f4f6}._suggestedVideoDesc_gfvv4_788{font-size:.6875rem;line-height:1.3;margin-top:2px}._suggestedVideoDescLight_gfvv4_794{color:#6b7280}._suggestedVideoDescDark_gfvv4_798{color:#9ca3af}._explainButton_gfvv4_807{min-height:36px;padding:0 12px;border-radius:8px;background:none;border:none;cursor:pointer;font:inherit;font-size:.875rem;font-weight:500;color:var(--color-text)}._explainButton_gfvv4_807:hover{background:var(--color-muted)}@media(pointer:coarse){._listenButton_gfvv4_375,._explainButton_gfvv4_807{min-height:44px}}._explainButton_gfvv4_807:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px;border-radius:6px}._svgContainer_rda94_1,._mermaidContainer_rda94_2,._vegaContainer_rda94_3{display:flex;justify-content:center;align-items:center;padding:16px;border-radius:8px;margin-bottom:12px;overflow:auto;max-width:100%}._svgContainer_rda94_1 svg,._mermaidContainer_rda94_2 svg{max-width:100%;height:auto;overflow:visible}._svgLight_rda94_23,._mermaidLight_rda94_24,._vegaLight_rda94_25{background-color:#f8f9fa;border:1px solid #e9ecef}._svgDark_rda94_30,._mermaidDark_rda94_31,._vegaDark_rda94_32{background-color:#1e1e1e;border:1px solid #333}._svgLight_rda94_23{color:var(--slate-800)}._svgDark_rda94_30{color:var(--slate-200)}._mermaidLight_rda94_24 svg{background-color:transparent}._mermaidDark_rda94_31 svg{background-color:transparent}._errorContainer_rda94_57{display:flex;align-items:center;gap:8px;padding:12px 16px;border-radius:8px;margin-bottom:12px;font-size:14px}._errorLight_rda94_67{background-color:#fff3cd;color:#856404;border:1px solid #ffeeba}._errorDark_rda94_73{background-color:#3d3d00;color:#ffc107;border:1px solid #665d1e}._errorIcon_rda94_79{font-size:16px}@media(max-width:768px){._svgContainer_rda94_1,._mermaidContainer_rda94_2,._vegaContainer_rda94_3{touch-action:pan-y pinch-zoom;padding:8px;transform:translateZ(0);will-change:auto;-webkit-overflow-scrolling:touch}._svgContainer_rda94_1 svg,._mermaidContainer_rda94_2 svg{max-height:400px;width:auto}._svgContainer_rda94_1 text,._mermaidContainer_rda94_2 text{font-size:12px!important}}._svgContainer_rda94_1,._mermaidContainer_rda94_2,._vegaContainer_rda94_3{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}._keyboard_xtma9_3{border-radius:12px;padding:12px;margin-top:8px;animation:_slideIn_xtma9_1 .2s ease-out}._keyboardLight_xtma9_10{background-color:#fff;border:1px solid #e2e8f0;box-shadow:0 4px 12px #00000014}._keyboardDark_xtma9_16{background-color:#1e293b;border:1px solid #334155;box-shadow:0 4px 12px #0000004d}._tabs_xtma9_23{display:flex;gap:4px;margin-bottom:12px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}._tabs_xtma9_23::-webkit-scrollbar{display:none}._tab_xtma9_23{flex-shrink:0;padding:8px 16px;border:none;border-radius:8px;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s;white-space:nowrap}._tabLight_xtma9_48{background-color:#f1f5f9;color:#64748b}._tabLight_xtma9_48:hover{background-color:#e2e8f0;color:#334155}._tabDark_xtma9_58{background-color:#334155;color:#94a3b8}._tabDark_xtma9_58:hover{background-color:#475569;color:#cbd5e1}._tabActive_xtma9_68{font-weight:600}._tabActiveLight_xtma9_72{background-color:#0d9488;color:#fff}._tabActiveLight_xtma9_72:hover{background-color:#0f766e}._tabActiveDark_xtma9_81{background-color:#2dd4bf;color:#0f172a}._tabActiveDark_xtma9_81:hover{background-color:#5eead4}._closeButton_xtma9_90{margin-left:auto;flex-shrink:0;width:32px;height:32px;border:none;border-radius:6px;font-size:1.5rem;line-height:1;cursor:pointer;transition:all .2s;display:flex;align-items:center;justify-content:center}._closeButtonLight_xtma9_106{background-color:#f1f5f9;color:#64748b}._closeButtonLight_xtma9_106:hover{background-color:#e2e8f0;color:#334155}._closeButtonDark_xtma9_116{background-color:#334155;color:#94a3b8}._closeButtonDark_xtma9_116:hover{background-color:#475569;color:#cbd5e1}._symbolGrid_xtma9_127{display:grid;grid-template-columns:repeat(auto-fill,minmax(44px,1fr));gap:6px}._symbolButton_xtma9_133{aspect-ratio:1;min-height:44px;border:none;border-radius:8px;font-size:1.25rem;cursor:pointer;transition:all .15s;display:flex;align-items:center;justify-content:center;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}._symbolButtonLight_xtma9_148{background-color:#f8fafc;border:1px solid #e2e8f0;color:#0f172a}._symbolButtonLight_xtma9_148:hover{background-color:#e2e8f0;border-color:#cbd5e1;transform:translateY(-1px)}._symbolButtonLight_xtma9_148:active{background-color:#cbd5e1;transform:translateY(0)}._symbolButtonDark_xtma9_165{background-color:#334155;border:1px solid #475569;color:#f1f5f9}._symbolButtonDark_xtma9_165:hover{background-color:#475569;border-color:#64748b;transform:translateY(-1px)}._symbolButtonDark_xtma9_165:active{background-color:#64748b;transform:translateY(0)}@keyframes _slideIn_xtma9_1{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@media(max-width:768px){._keyboard_xtma9_3{padding:10px;margin-top:6px}._tabs_xtma9_23{gap:3px;margin-bottom:10px}._tab_xtma9_23{padding:6px 12px;font-size:.8125rem}._closeButton_xtma9_90{width:28px;height:28px;font-size:1.25rem}._symbolGrid_xtma9_127{grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:5px}._symbolButton_xtma9_133{min-height:40px;font-size:1.125rem}}@media(min-width:769px)and (max-width:1024px){._symbolGrid_xtma9_127{grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:7px}._symbolButton_xtma9_133{min-height:48px;font-size:1.375rem}}@media(min-width:1025px){._symbolGrid_xtma9_127{grid-template-columns:repeat(auto-fill,minmax(50px,1fr));gap:8px}._symbolButton_xtma9_133{min-height:50px;font-size:1.5rem}}._tab_xtma9_23:focus-visible,._symbolButton_xtma9_133:focus-visible,._closeButton_xtma9_90:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media(prefers-contrast:high){._symbolButtonLight_xtma9_148,._symbolButtonDark_xtma9_165{border-width:2px}}._container_aahgw_30{flex-shrink:0;padding-bottom:env(safe-area-inset-bottom)}._composer_aahgw_39{border:1px solid var(--color-border);border-radius:16px;background:var(--color-surface);padding:8px 8px 8px 16px;display:flex;flex-direction:column;gap:4px;box-shadow:0 1px 2px #0000000a;transition:border-color .15s,box-shadow .15s}._composer_aahgw_39:focus-within{border-color:var(--teal-600);box-shadow:0 0 0 3px #0d948826}[data-theme=dark] ._composer_aahgw_39:focus-within{border-color:var(--teal-400);box-shadow:0 0 0 3px #2dd4bf33}._composerDisabled_aahgw_61{opacity:.7}._actionSpacer_aahgw_65{flex:1}._previewContainer_aahgw_69{margin-bottom:12px;padding:10px 12px;border-radius:10px;display:flex;align-items:center;gap:10px}._previewContainerLight_aahgw_78,._previewContainerDark_aahgw_83{background-color:var(--color-surface);border:1px solid var(--color-border)}._previewImage_aahgw_88{width:44px;height:44px;object-fit:cover;border-radius:8px}._previewFileName_aahgw_95{flex:1;font-size:.875rem}._previewFileNameLight_aahgw_100{color:var(--color-subtext)}._previewFileNameDark_aahgw_104{color:#e2e8f0}._documentIcon_aahgw_108{width:44px;height:44px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:1.25rem}._documentIconLight_aahgw_118{background-color:var(--color-muted)}._documentIconDark_aahgw_122{background-color:var(--color-border)}._removeButton_aahgw_126{background:none;border:none;cursor:pointer;font-size:1.125rem;padding:4px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s}._removeButtonLight_aahgw_139{color:#64748b}._removeButtonLight_aahgw_139:hover{background-color:var(--color-muted)}._removeButtonDark_aahgw_147{color:#94a3b8}._removeButtonDark_aahgw_147:hover{background-color:var(--color-border)}._recordingIndicator_aahgw_155{margin-bottom:12px;padding:10px 14px;border-radius:10px;display:flex;align-items:center;gap:10px}._recordingIndicatorRecording_aahgw_164{background-color:#ef44441a;border:1px solid #ef4444}._recordingIndicatorTranscribing_aahgw_169{background-color:#0d94881a}._recordingIndicatorTranscribingLight_aahgw_173,._recordingIndicatorTranscribingDark_aahgw_177{border:1px solid var(--color-primary)}._recordingIcon_aahgw_181{font-size:1.125rem}._recordingText_aahgw_185{font-size:.875rem;font-weight:500}._recordingTextRecording_aahgw_190{color:#ef4444}._recordingTextTranscribingLight_aahgw_194,._recordingTextTranscribingDark_aahgw_198{color:var(--color-primary)}._hiddenInput_aahgw_202{display:none}._actionButtonsRow_aahgw_206{display:flex;align-items:center;gap:2px;margin-left:-8px}._actionButton_aahgw_206{background:none;cursor:pointer;font-size:1.25rem;width:40px;height:40px;display:flex;align-items:center;justify-content:center;transition:all .2s;border-radius:8px;flex-shrink:0}._actionButtonLight_aahgw_227{border:1px solid #cbd5e1;color:#64748b}._actionButtonDark_aahgw_232{border:1px solid #475569;color:#94a3b8}._actionButtonDisabled_aahgw_237{cursor:not-allowed;opacity:.5}._actionButtonLight_aahgw_227:not(._actionButtonDisabled_aahgw_237):hover{background-color:var(--color-muted)}._actionButtonDark_aahgw_232:not(._actionButtonDisabled_aahgw_237):hover{background-color:var(--color-border)}._recordButtonRecording_aahgw_20{background:#ef4444;color:#fff;animation:_pulse-recording_aahgw_1 1.5s ease-in-out infinite}._actionDivider_aahgw_260{color:#cbd5e1;font-size:1.25rem;font-weight:300;padding:0 4px;-webkit-user-select:none;user-select:none}._practiceButton_aahgw_20{background:#2563eb!important;color:#fff!important;border:none!important}._practiceButton_aahgw_20:hover{background:#1d4ed8!important}._exploreButton_aahgw_278{background:#7c3aed!important;color:#fff!important;border:none!important}._exploreButton_aahgw_278:hover{background:#6d28d9!important}._progressButton_aahgw_288{width:auto!important;padding:0 10px!important;gap:4px;font-size:.75rem!important;font-weight:600}._progressButtonLight_aahgw_296{background:var(--color-surface)!important;border:1px solid #e5e7eb!important;color:#374151!important}._progressButtonLight_aahgw_296:hover{background:#f9fafb!important}._progressButtonDark_aahgw_306{background:#1f2937!important;border:1px solid #4b5563!important;color:#fff!important}._progressButtonDark_aahgw_306:hover{background:#374151!important}._levelBadge_aahgw_316{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;background-color:#2563eb;color:#fff;border-radius:50%;font-size:.625rem;font-weight:700}._xpText_aahgw_329{font-size:.6875rem}._streakIcon_aahgw_333{font-size:.75rem}._textInput_aahgw_338{background:none;border:none;outline:none;resize:none;font-family:inherit;font-size:16px;line-height:1.5;color:var(--color-text);padding:6px 0;min-height:28px}._sendButton_aahgw_352{width:40px;height:40px;border-radius:10px;border:none;background:var(--teal-700);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background .15s}._sendButton_aahgw_352:not(:disabled):hover{background:var(--teal-800)}[data-theme=dark] ._sendButton_aahgw_352{background:var(--teal-400);color:var(--slate-950)}[data-theme=dark] ._sendButton_aahgw_352:not(:disabled):hover{background:var(--teal-300)}._sendButton_aahgw_352:disabled{background:var(--color-muted);color:var(--color-control);cursor:not-allowed}@keyframes _pulse-recording_aahgw_1{0%,to{transform:scale(1);box-shadow:0 0 #ef444466}50%{transform:scale(1.05);box-shadow:0 0 0 8px #ef444400}}@media(max-width:768px){._container_aahgw_30{padding:8px 12px;padding-bottom:max(8px,env(safe-area-inset-bottom))}._actionButtonsRow_aahgw_206{gap:2px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;-ms-overflow-style:none}._actionButtonsRow_aahgw_206::-webkit-scrollbar{display:none}._actionButton_aahgw_206{width:36px;height:36px;font-size:1.125rem;border-radius:6px}._actionDivider_aahgw_260{padding:0 2px;font-size:1rem}._progressButton_aahgw_288{padding:0 6px!important;min-width:auto}._levelBadge_aahgw_316{width:16px;height:16px;font-size:.5625rem}._xpText_aahgw_329,._streakIcon_aahgw_333{font-size:.625rem}._composer_aahgw_39{padding:6px 6px 6px 12px}._textInput_aahgw_338{padding:6px 0}}._popover_tjl9m_5{position:absolute;top:calc(100% + 6px);left:16px;width:380px;max-width:calc(100vw - 32px);max-height:min(560px,calc(100vh - 120px));display:flex;flex-direction:column;background:var(--color-surface);border:1px solid var(--color-border);border-radius:14px;box-shadow:0 12px 32px #0f172a24,0 2px 6px #0f172a0f;z-index:40;overflow:hidden}[data-theme=dark] ._popover_tjl9m_5,[data-theme=dark] ._menu_tjl9m_23{box-shadow:0 12px 32px #00000080}._fullScreen_tjl9m_28{position:static;width:auto;max-width:none;max-height:none;height:100%;border:none;border-radius:0;box-shadow:none}._header_tjl9m_39{display:flex;flex-direction:column;gap:10px;padding:12px 12px 8px;border-bottom:1px solid var(--color-border)}._fullScreen_tjl9m_28 ._header_tjl9m_39{padding:8px 12px 10px}._phoneHeader_tjl9m_51{display:flex;align-items:center;gap:4px;margin-left:-4px}._phoneTitle_tjl9m_58{flex:1;margin:0;font-size:18px;font-weight:600;line-height:1.3}._searchWrap_tjl9m_66{position:relative}._searchIcon_tjl9m_70{position:absolute;left:12px;top:13px;display:flex;color:var(--color-control);pointer-events:none}._search_tjl9m_66{width:100%;min-height:44px;border:1px solid var(--color-border);border-radius:10px;padding:0 14px 0 38px;font-family:inherit;font-size:15px;background:var(--color-surface);color:var(--color-text)}._search_tjl9m_66:focus{outline:2px solid var(--color-focus);outline-offset:-1px;border-color:transparent}._list_tjl9m_97{overflow:auto;flex:1;padding:4px 8px 8px}._group_tjl9m_103{display:flex;flex-direction:column;gap:2px}._groupLabel_tjl9m_109{margin:0;padding:10px 10px 4px;font-size:12px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--color-subtext)}._noMatch_tjl9m_119{padding:24px 12px;text-align:center;font-size:14px;color:var(--color-subtext)}._row_tjl9m_126{position:relative;display:flex;align-items:center;border-radius:10px}._row_tjl9m_126:hover,._row_tjl9m_126[aria-current=true]{background:var(--color-muted)}._rowMain_tjl9m_138{flex:1;min-width:0;display:flex;gap:10px;align-items:center;min-height:52px;padding:8px 4px 8px 10px;border:none;background:none;text-align:left;font:inherit;color:inherit;cursor:pointer;border-radius:10px}._rowText_tjl9m_155{display:flex;flex-direction:column;min-width:0}._rowTitle_tjl9m_161{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}._rowMeta_tjl9m_169{font-size:13px;color:var(--color-subtext)}._disc_tjl9m_175{flex-shrink:0;display:flex}._iconButton_tjl9m_180{width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;border-radius:10px;border:none;background:transparent;cursor:pointer;color:var(--color-subtext);flex-shrink:0}._iconButton_tjl9m_180:hover{background:var(--color-muted);color:var(--color-text)}._moreButton_tjl9m_204{opacity:0;margin-right:4px}._row_tjl9m_126:hover ._moreButton_tjl9m_204,._row_tjl9m_126:focus-within ._moreButton_tjl9m_204,._row_tjl9m_126[aria-current=true] ._moreButton_tjl9m_204,._fullScreen_tjl9m_28 ._moreButton_tjl9m_204{opacity:1}._menu_tjl9m_23{position:absolute;right:6px;top:calc(100% - 6px);z-index:5;min-width:160px;display:flex;flex-direction:column;padding:4px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:10px;box-shadow:0 8px 24px #0f172a24}._menu_tjl9m_23 button{display:flex;align-items:center;min-height:40px;padding:0 12px;border:none;background:none;border-radius:8px;font-family:inherit;font-size:14px;font-weight:500;color:var(--color-text);cursor:pointer;text-align:left}._menu_tjl9m_23 button:hover,._menu_tjl9m_23 button:focus-visible{background:var(--color-muted)}._menuDanger_tjl9m_252{color:var(--color-danger-strong)}._editRow_tjl9m_256{display:flex;gap:10px;align-items:center;flex:1;padding:6px 6px 6px 10px}._renameInput_tjl9m_264{width:100%;min-height:38px;border:1px solid var(--color-border);border-radius:10px;padding:0 12px;font-family:inherit;font-size:15px;background:var(--color-surface);color:var(--color-text)}._renameInput_tjl9m_264:focus{outline:2px solid var(--color-focus);outline-offset:-1px;border-color:transparent}._confirmRow_tjl9m_282{display:flex;flex-direction:column;gap:8px;flex:1;padding:10px}._confirmText_tjl9m_290{font-size:14px;color:var(--color-text)}._confirmActions_tjl9m_295{display:flex;gap:8px;justify-content:flex-end}._dangerButton_tjl9m_302{background:var(--rose-600);color:#fff}._dangerButton_tjl9m_302:not(:disabled):hover{background:var(--rose-700)}._footer_tjl9m_311{padding:8px;border-top:1px solid var(--color-border)}._newChat_tjl9m_316{width:100%}._fullScreen_tjl9m_28 ._newChat_tjl9m_316{width:auto}._panel_1x3gf_5{display:flex;flex-direction:column;gap:12px;padding:16px;height:100%;min-height:0;overflow:auto}._headerRow_1x3gf_15{display:flex;align-items:center;justify-content:space-between;gap:8px}._headerActions_1x3gf_22{display:flex;align-items:center;gap:4px;flex-shrink:0}._collapse_1x3gf_30{display:flex;align-items:center;justify-content:center;width:28px;height:28px;padding:0;border:none;border-radius:8px;background:none;cursor:pointer;color:var(--color-subtext)}._collapse_1x3gf_30:hover{background:var(--color-muted)}._sectionLabel_1x3gf_49{margin:0;font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--color-subtext)}._question_1x3gf_58{margin:0}._options_1x3gf_62{display:flex;flex-direction:column;gap:8px}._option_1x3gf_62{display:flex;align-items:center;gap:12px;width:100%;min-height:48px;padding:10px 14px;border-radius:10px;border:1px solid var(--color-border);background:var(--color-surface);cursor:pointer;text-align:left;font-family:inherit;font-size:15px;font-weight:500;color:var(--color-text)}._option_1x3gf_62:hover:not(:disabled){border-color:var(--color-control)}._option_1x3gf_62:disabled{cursor:default}._optionText_1x3gf_94{min-width:0}._letter_1x3gf_98{width:28px;height:28px;border-radius:8px;background:var(--color-muted);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}._mark_1x3gf_111{margin-left:auto;flex-shrink:0}._optionCorrect_1x3gf_122{border-color:var(--emerald-600);background:var(--emerald-50)}._optionWrong_1x3gf_127{border-color:var(--rose-600);background:var(--rose-50)}[data-theme=dark] ._optionCorrect_1x3gf_122{border-color:var(--emerald-400);background:#10b9811f}[data-theme=dark] ._optionWrong_1x3gf_127{border-color:var(--rose-400);background:#f43f5e1f}[data-color-mode=simple] ._optionCorrect_1x3gf_122{border-color:var(--color-text);box-shadow:inset 0 0 0 1px var(--color-text);background:var(--color-muted)}[data-color-mode=simple] ._optionWrong_1x3gf_127{border-color:var(--color-control);background:var(--color-bg)}._explanation_1x3gf_158{display:flex;flex-direction:column;gap:4px;padding:14px;border-radius:12px;border:1px solid var(--color-border);background:var(--color-bg)}._actions_1x3gf_168{display:flex;gap:8px;margin-top:auto;padding-top:4px}._nextButton_1x3gf_175{flex:1}._doneBlock_1x3gf_179{display:flex;flex-direction:column;align-items:flex-start;gap:10px;padding:16px 0}._panel_fafis_15{padding:16px;border-radius:8px;margin-bottom:16px}._panelHeading_fafis_21{margin:0 0 8px}._panelBody_fafis_25{margin:0}._story_fafis_29{background-color:var(--amber-50);color:var(--amber-900)}[data-theme=dark] ._story_fafis_29{background-color:var(--amber-900);color:var(--amber-50)}._connection_fafis_39{background-color:var(--emerald-50);color:var(--emerald-900)}[data-theme=dark] ._connection_fafis_39{background-color:var(--emerald-900);color:var(--emerald-50)}._errorBanner_fafis_49{padding:12px;border-radius:8px;margin-bottom:16px;background-color:var(--rose-50);color:var(--rose-900)}[data-theme=dark] ._errorBanner_fafis_49{background-color:var(--rose-900);color:var(--rose-50)}._misconception_fafis_66{padding:12px;border-radius:8px;margin-bottom:8px;background-color:var(--rose-50);color:var(--rose-900)}[data-theme=dark] ._misconception_fafis_66{background-color:var(--rose-900);color:var(--rose-50)}._myth_fafis_79{margin:0;color:var(--rose-700)}._fact_fafis_84{margin:8px 0 0;color:var(--emerald-700)}[data-theme=dark] ._myth_fafis_79{color:var(--rose-100)}[data-theme=dark] ._fact_fafis_84{color:var(--emerald-200)}._page_d9rkp_8{display:flex;flex-direction:column;height:100%;min-height:0;background:var(--color-bg)}._loading_d9rkp_16{display:flex;flex-direction:column;gap:12px;padding:32px 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var(--color-border);background:var(--color-surface);display:flex;flex-direction:column;min-height:0}._practice_d9rkp_155[data-collapsed=true]{width:44px}._practiceRail_d9rkp_175{display:flex;flex-direction:column;align-items:center;gap:10px;width:100%;height:100%;padding:14px 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i{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--color-control);margin-right:5px;animation:_dot_d9rkp_1 1.2s infinite}._typingDots_d9rkp_331 i:nth-child(2){animation-delay:.15s}._typingDots_d9rkp_331 i:nth-child(3){animation-delay:.3s}@keyframes _dot_d9rkp_1{0%,60%,to{transform:translateY(0);opacity:.55}30%{transform:translateY(-4px);opacity:1}}@media(prefers-reduced-motion:reduce){._typingDots_d9rkp_331 i{animation:none}}._segmented_d9rkp_371{display:none;padding:3px;border-radius:10px;background:var(--color-muted);gap:2px}._segmented_d9rkp_371 button{border:none;background:none;min-height:36px;padding:0 14px;border-radius:8px;font-family:inherit;font-size:14px;font-weight:600;cursor:pointer;color:var(--color-subtext)}._segmented_d9rkp_371 button[aria-pressed=true]{background:var(--color-surface);color:var(--color-text);box-shadow:0 1px 2px #00000014}._phoneHistory_d9rkp_398{height:100%;min-height:0;background:var(--color-surface)}@media(max-width:719px){._topBar_d9rkp_25{height:52px;padding:0 8px 0 16px}._titleButton_d9rkp_38{max-width:55%}._segmented_d9rkp_371{display:inline-flex}._newChat_d9rkp_92{display:none}._thread_d9rkp_112{padding:12px}._composerWrap_d9rkp_139{padding:6px 10px 16px}._conversation_d9rkp_104[data-phone-hidden=true],._practice_d9rkp_155[data-phone-hidden=true]{display:none}._practice_d9rkp_155[data-phone-hidden]{width:auto;flex:1;border-left:none}._practice_d9rkp_155{display:flex}}:root{--color-primary-dark: #0f766e;--color-primary-light: rgba(13, 148, 136, .15);--color-primary-shadow: rgba(13, 148, 136, .25)}[data-theme=light]{--bg-primary: #f8fafc;--bg-sidebar: #ffffff;--bg-surface: #ffffff;--bg-chat: #f8fafc;--chat-gradient: linear-gradient(135deg, #f0fdfa 0%, #f5f3ff 25%, #f0f9ff 50%, #faf5ff 75%, #f0fdfa 100%);--bg-hover: #f1f5f9;--bg-active: #e0f2f1;--bg-input: #ffffff;--bg-tab: #f1f5f9;--bg-tab-hover: #e2e8f0;--bg-message-assistant: #ffffff;--bg-code: rgba(0, 0, 0, .05);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--border-color: #e2e8f0;--subject-math: #3b82f6;--subject-math-bg: #eff6ff;--subject-science: #10b981;--subject-science-bg: #ecfdf5;--subject-english: #a855f7;--subject-english-bg: #faf5ff;--subject-history: #f59e0b;--subject-history-bg: #fffbeb;--subject-social: #f43f5e;--subject-social-bg: #fff1f2}[data-theme=dark]{--bg-primary: #0f172a;--bg-sidebar: #1e293b;--bg-surface: #1e293b;--bg-chat: #0f172a;--chat-gradient: linear-gradient(135deg, #0f1f2e 0%, #151525 25%, #0f172a 50%, #141428 75%, #0f1f2e 100%);--bg-hover: #334155;--bg-active: #134e4a;--bg-input: #1e293b;--bg-tab: #334155;--bg-tab-hover: #475569;--bg-message-assistant: #1e293b;--bg-code: rgba(255, 255, 255, .1);--text-primary: #f1f5f9;--text-secondary: #94a3b8;--text-muted: #64748b;--border-color: #334155;--subject-math: #60a5fa;--subject-math-bg: 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1 auto;min-width:100px}.button-group-responsive>*:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media(max-width:640px){.button-group-responsive>*{flex:1 1 calc(50% - var(--spacing-1))}}@media(min-width:768px){.button-group-responsive{gap:var(--spacing-3)}.button-group-responsive>*{flex:0 1 auto;min-width:120px}}.chat-sidebar{width:280px;border-right:1px solid rgba(255,255,255,.2);display:flex;flex-direction:column;background:#ffffff0d;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:transform .3s ease;flex-shrink:0}[data-theme=light] .chat-sidebar{background:#ffffffe6;border-right:1px solid rgba(0,0,0,.1);box-shadow:2px 0 8px #0000000d}@media(max-width:768px){.chat-sidebar{position:fixed;top:0;left:0;bottom:0;z-index:1000;width:85%;max-width:320px}.chat-sidebar.closed{transform:translate(-100%);box-shadow:none}.chat-sidebar.open{transform:translate(0);box-shadow:2px 0 8px #00000026}.mobile-backdrop{display:block!important}.chats-toggle-button{display:flex!important}}@media(min-width:768px)and (max-width:1024px){.chat-sidebar{width:240px;position:static;transform:none}.chats-toggle-button{display:none!important}}@media(min-width:1024px){.chat-sidebar{width:300px;position:static;transform:none}.chats-toggle-button{display:none!important}}.chat-main-pane{flex:1;display:flex;flex-direction:column;background:#14141e26;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);overflow:hidden;min-width:0;box-shadow:0 8px 32px #0000001a}[data-theme=light] .chat-main-pane{background:#ffffff40;box-shadow:0 8px 32px #1f26871a}.starter-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-3)}.starter-button{padding:var(--spacing-4);font-size:1rem}.starter-button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}@media(max-width:640px){.starter-grid{grid-template-columns:1fr;gap:var(--spacing-2)}.starter-button{padding:var(--spacing-3);font-size:.9375rem}}@media(min-width:1024px){.starter-grid{gap:var(--spacing-4)}}.tab-nav{flex-shrink:0;display:flex;justify-content:space-around;align-items:stretch;background-color:var(--color-surface);border-top:1px solid var(--color-border);padding:var(--spacing-2) var(--spacing-3);padding-bottom:calc(var(--spacing-2) + env(safe-area-inset-bottom,0px));min-height:60px}.tab-nav-button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--spacing-1);background:none;border:none;cursor:pointer;transition:all .3s ease;opacity:1;min-height:44px;min-width:44px;padding:var(--spacing-2) var(--spacing-3);border-radius:var(--radius-full);position:relative}.tab-nav-button[aria-current=page]{background:linear-gradient(135deg,#667eea26,#764ba226)}[data-theme=dark] .tab-nav-button[aria-current=page]{background:linear-gradient(135deg,#667eea40,#764ba240)}.tab-nav-button:hover{opacity:.8;transform:translateY(-2px)}.tab-nav-button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.tab-icon{font-size:20px}.tab-label{font-size:.75rem}@media(min-width:768px){.tab-nav{padding:var(--spacing-2) var(--spacing-5);min-height:64px}.tab-nav-button{min-height:48px;min-width:48px;padding:var(--spacing-2)}.tab-icon{font-size:22px}.tab-label{font-size:.8125rem}}@media(min-width:1024px){.tab-nav{padding:var(--spacing-3) var(--spacing-6);min-height:68px}.tab-nav-button{min-height:52px;min-width:52px;padding:var(--spacing-2)}.tab-icon{font-size:24px}.tab-label{font-size:.875rem}}.home-logo{width:80px;height:80px}.home-logo-badge{top:-4px;right:-25px;font-size:8px;padding:3px 5px}.home-heading,.home-emoji{font-size:1.5rem}.home-subjects-grid{display:grid;grid-template-columns:1fr;gap:var(--spacing-3)}.home-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:var(--spacing-2)}.home-stat-number{font-size:1.5rem}@media(min-width:768px){.home-logo{width:100px;height:100px}.home-logo-badge{top:-5px;right:-30px;font-size:9px;padding:3px 6px}.home-heading,.home-emoji{font-size:1.75rem}.home-subjects-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:var(--spacing-3)}.home-stats-grid{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:var(--spacing-3)}.home-stat-number{font-size:1.75rem}}@media(min-width:1024px){.home-logo{width:120px;height:120px}.home-logo-badge{top:-6px;right:-35px;font-size:10px;padding:4px 7px}.home-heading{font-size:1.875rem}.home-emoji{font-size:2rem}.home-subjects-grid{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:var(--spacing-3)}.home-stats-grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:var(--spacing-3)}.home-stat-number{font-size:2rem}}