:root{color-scheme:light;--parentcraft-primary: #1f5948;--parentcraft-secondary: #83ad91;--parentcraft-accent: #d9785d;--parentcraft-background: #ffffff;--parentcraft-text: #173c32;--parentcraft-text-muted: #4e625c;--parentcraft-surface: #f4f8f5;--parentcraft-accent-surface: #fff4f0;--parentcraft-focus-ring: #1f5948}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}html{overflow-x:hidden}body{font-family:Segoe UI,system-ui,sans-serif;color:var(--parentcraft-text);background:var(--parentcraft-background);overflow-x:hidden}a{color:var(--parentcraft-primary)}button,input,textarea,select{font:inherit}button{background:var(--parentcraft-primary);color:#fff;border:0;border-radius:8px;padding:10px 16px;cursor:pointer}button.secondary{background:var(--parentcraft-surface);color:var(--parentcraft-text);border:1px solid 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svg{max-height:min(22vh,180px)}.sitting-sheet-open{width:100%;min-height:48px;font-size:1.08rem;font-weight:750}.sitting-chat{min-width:0;min-height:0;display:flex;flex-direction:column}.sitting-chat .bubble.tutor.focus,.sitting-chat .bubble.you{font-size:1.12rem}.sitting-chat .composer-sizer,.sitting-chat .composer textarea{font-size:1.08rem;line-height:1.55}.sitting-chat .chat{flex:1;min-height:0}.sitting-rail{display:flex;flex-direction:column;gap:10px;min-width:0}.sitting-rail .brand-mark{margin-bottom:8px;width:auto;height:auto;max-height:none;align-self:center}.sitting-rail-btn{width:100%;min-height:48px;font-weight:700}.child-top{display:flex;align-items:center;gap:12px;flex-shrink:0;margin:0 0 8px}.child-app .child-top nav{margin:0 0 0 auto}.child-app nav{margin-bottom:8px;flex-shrink:0}.chat{flex:1;display:flex;flex-direction:column;min-height:0;min-width:0}.chat-thread{flex:1;overflow-y:auto;overflow-x:hidden;padding-bottom:12px;min-width:0}.passage-panel{flex:0 0 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24px;border:1px solid #d7e4dd;border-radius:16px;background:var(--parentcraft-background);overflow:hidden}.ari-progress{height:4px;background:var(--parentcraft-surface)}.ari-progress span{display:block;height:100%;background:var(--parentcraft-accent);transition:width .2s ease}.ari-stage{display:grid;grid-template-columns:200px 1fr;gap:8px 24px;align-items:center;padding:20px 22px 8px}.ari-stage-portrait{text-align:center}.ari-portrait{height:auto;display:block}.ari-portrait-stage{width:168px;margin:0 auto}.ari-portrait.ari-portrait-bubble{width:44px;height:44px;margin:0}.ari-nameplate{margin:0;font-size:.78rem;color:var(--parentcraft-text-muted)}.ari-speech{max-width:100%;min-height:7.2em}.ari-say{min-height:4.8em}.ari-caret{display:inline-block;width:2px;height:1em;margin-left:3px;background:var(--parentcraft-primary);vertical-align:-2px;animation:ari-caret 1s steps(2) infinite}.ari-aside{margin:10px 0 0;font-size:.92rem}.ari-beats{display:flex;flex-wrap:wrap;gap:8px;padding:12px 22px 4px}.ari-beat{background:var(--parentcraft-surface);color:var(--parentcraft-text);border:1px solid transparent;padding:8px 12px;font-size:.88rem}.ari-beat.on{background:var(--parentcraft-background);color:var(--parentcraft-primary);border-color:var(--parentcraft-primary);border-width:2px}.ari-beat-num{display:inline-block;margin-right:6px;color:var(--parentcraft-accent);font-weight:600}.ari-controls{display:flex;flex-wrap:wrap;align-items:center;gap:12px;padding:12px 22px 20px}.ari-controls button:disabled{opacity:.45;cursor:not-allowed}.ari-controls .text-link{margin-left:auto}.ari-eye{transform-box:fill-box;transform-origin:50% 50%;animation:ari-blink 5s infinite}.ari-portrait-speaking .ari-chest{animation:ari-pulse 1.1s ease-in-out infinite}.ari-portrait-bubble.ari-portrait-speaking,.ari-portrait-visor.ari-portrait-speaking{animation:none}.ari-face{filter:drop-shadow(0 0 3px #f4f8f5)}.ari-portrait-speaking .ari-face{animation:ari-pulse 1.1s ease-in-out infinite}@keyframes 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