:root{--pink: #FF9EAA;--pink-light: #FFE4E8;--blue: #A8D8EA;--blue-light: #E0F0F8;--green: #AAE1C6;--green-light: #D8F0E4;--yellow: #FFD700;--yellow-light: #FFF3CC;--purple: #DDA0DD;--purple-light: #F0DFF0;--text: #5a4a5a;--text-light: #8a7a8a;--bg: #FFF8F5;--shadow: 0 4px 16px rgba(0,0,0,.08);--radius: 16px;--radius-sm: 10px;--font: "Noto Sans TC", "Noto Sans SC", "PingFang TC", "Microsoft JhengHei", sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.screen{max-width:500px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;gap:12px;padding:0 0 20px}.screen-header{display:flex;align-items:center;gap:10px;padding:12px 16px;background:#fff;border-bottom:1px solid #f0e8f0;position:sticky;top:0;z-index:100}.screen-header h2{flex:1;font-size:18px}.header-coins{display:flex;gap:10px;font-size:14px;font-weight:600}.btn-back{background:none;border:none;font-size:15px;color:var(--text-light);cursor:pointer;padding:4px 8px;font-family:var(--font);white-space:nowrap}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border:2px solid transparent;border-radius:var(--radius-sm);font-size:14px;font-weight:600;cursor:pointer;font-family:var(--font);transition:all .2s}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--pink)!important;color:#fff!important;border-color:var(--pink)!important}.btn-secondary{background:var(--blue-light);color:#5b8faa;border-color:var(--blue)}.btn-small{padding:6px 14px;font-size:13px}.pet-companion{display:flex;flex-direction:column;align-items:center;gap:6px}.pet-sprite-wrap{display:flex;align-items:center;justify-content:center}.pet-interactive{cursor:pointer}.pet-mood-text{font-size:13px;color:var(--text-light);text-align:center;max-width:200px}.pet-bubble{position:absolute;top:-20px;left:50%;transform:translate(-50%);background:#fff;border:2px solid var(--pink-light);border-radius:12px;padding:4px 12px;white-space:nowrap;font-size:12px;font-weight:600;box-shadow:0 2px 8px #00000014}.tutor-hero{display:flex;justify-content:center;padding:10px 16px}.tutor-info-bar{text-align:center;font-size:13px;color:var(--text-light);padding:8px 16px;background:var(--yellow-light);margin:0 16px;border-radius:var(--radius-sm)}.section-desc{padding:0 16px}.section-desc p{font-size:14px;font-weight:600;color:var(--text-light);margin:0}.tutor-subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:0 16px}.tutor-subject-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:20px 12px;background:#fff;border:2px solid var(--card-color, #eee);border-radius:var(--radius);cursor:pointer;transition:all .2s;font-family:var(--font)}.tutor-subject-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000014}.tutor-subject-icon{font-size:32px}.tutor-subject-label{font-size:16px;font-weight:700;color:var(--text)}.tutor-weakness-overview{padding:12px 16px;background:var(--yellow-light);margin:0 16px;border-radius:var(--radius)}.tutor-weakness-title{font-size:13px;font-weight:700;color:#f57f17;margin-bottom:8px}.tutor-weakness-list{display:flex;flex-wrap:wrap;gap:6px}.tutor-weakness-chip{font-size:11px;padding:3px 10px;border-radius:10px;background:#fff;border:2px solid #ddd;font-weight:600}.tutor-archives-entry{display:flex;align-items:center;gap:10px;padding:14px 18px;margin:0 16px;background:linear-gradient(135deg,#fff3e0,#ffecb3);border:2px solid #FFE082;border-radius:var(--radius);cursor:pointer;transition:all .2s}.tutor-archives-entry:hover{transform:translateY(-2px);box-shadow:0 4px 12px #ffc10733}.tutor-archives-entry-icon{font-size:24px}.tutor-archives-entry-text{flex:1;font-size:15px;font-weight:700;color:#e65100}.tutor-archives-entry-arrow{font-size:18px;color:#ff8f00}.tutor-content{flex:1;display:flex;flex-direction:column;gap:12px;padding:8px 16px}.upload-hint-text{font-size:13px;color:var(--text-light);text-align:center}.upload-items-list{display:flex;flex-wrap:wrap;gap:8px}.upload-item-card{position:relative;width:80px;height:80px;border-radius:8px;overflow:hidden;border:2px solid #f0e8f0;background:#fff}.upload-item-thumb{width:100%;height:100%;object-fit:cover}.upload-item-text-preview{font-size:11px;padding:8px;color:var(--text-light);line-height:1.3;overflow:hidden}.upload-item-remove{position:absolute;top:2px;right:2px;width:20px;height:20px;border-radius:50%;border:none;background:#0006;color:#fff;font-size:12px;cursor:pointer;display:flex;align-items:center;justify-content:center}.upload-actions{display:flex;gap:10px}.upload-action-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:6px;padding:16px;background:#fff;border:2px dashed var(--pink-light);border-radius:var(--radius);cursor:pointer;font-family:var(--font)}.upload-action-icon{font-size:28px}.upload-action-label{font-size:13px;font-weight:600}.upload-camera{border-color:#ffb5c2}.upload-gallery{border-color:#a8d8ea}.upload-ocr-status{text-align:center;font-size:12px;color:var(--blue)}.tutor-divider{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--text-light)}.tutor-divider:before,.tutor-divider:after{content:"";flex:1;height:1px;background:#f0e8f0}.upload-text-row{display:flex;gap:8px;align-items:flex-start}.review-textarea{flex:1;padding:10px 12px;border:2px solid #f0e8f0;border-radius:var(--radius-sm);font-size:14px;font-family:var(--font);resize:vertical;background:#fff;color:var(--text)}.review-textarea:focus{outline:none;border-color:var(--pink-light)}.upload-submit-area{display:flex;flex-direction:column;gap:8px;margin-top:8px}.tutor-submit-btn{width:100%;padding:14px!important;font-size:15px!important}.tutor-error{font-size:13px;color:#d44;background:#fff0f0;padding:10px 14px;border-radius:var(--radius-sm);text-align:center}.analyzing-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:20px;padding:40px 20px}.analyzing-animation{text-align:center}.analyzing-steps{display:flex;flex-direction:column;gap:8px}.analyzing-step{font-size:14px;color:var(--text-light);padding:6px 16px;border-radius:8px;background:#f8f4f8}.analyzing-step.active{color:var(--pink);font-weight:600;background:var(--pink-light)}.analyzing-hint{text-align:center;font-size:14px;color:var(--text-light)}.groups-overall{background:#f5f0ff;border-radius:var(--radius);padding:14px;margin-bottom:8px}.groups-overall-title{font-size:14px;font-weight:700;margin-bottom:8px}.groups-overall-row{font-size:13px;margin-bottom:6px;line-height:1.5}.groups-overall-suggestion{font-size:13px;color:#6a1b9a;background:#fff;padding:8px;border-radius:8px;margin-top:8px}.groups-list{display:flex;flex-direction:column;gap:8px}.groups-list-title{font-size:13px;font-weight:600;color:var(--text-light);margin-bottom:4px}.group-card{display:block;width:100%;text-align:left;padding:14px;background:#fff;border:2px solid #f0e8f0;border-radius:var(--radius);cursor:pointer;transition:all .2s;font-family:var(--font)}.group-card:active{transform:scale(.99)}.group-card.group-selected{border-color:var(--pink);background:var(--pink-light)}.group-card-header{display:flex;align-items:center;gap:8px;margin-bottom:6px}.group-type-badge{font-size:11px;padding:2px 8px;border-radius:8px;font-weight:600}.group-difficulty{font-size:11px;color:var(--text-light)}.group-check{margin-left:auto;font-size:16px}.group-label{font-size:15px;font-weight:700;margin-bottom:6px}.group-topics{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:4px}.group-topic-tag{font-size:11px;padding:2px 8px;background:#f0e8f0;border-radius:8px;color:var(--text-light)}.group-summary{font-size:12px;color:var(--text-light);line-height:1.4}.result-weak-tag{font-size:11px;padding:1px 6px;background:#ffe8e8;color:#d44;border-radius:6px;margin:0 2px;white-space:nowrap}.quiz-game{flex:1;padding:0 16px}.game-title{font-size:16px;font-weight:700;margin-bottom:10px;text-align:center}.quiz-counter{text-align:center;font-size:13px;color:var(--text-light);margin-bottom:12px}.quiz-story{background:#f0f8ff;border-radius:var(--radius-sm);padding:8px 12px;margin-bottom:12px;text-align:center;cursor:pointer}.story-hint{font-size:13px;color:var(--blue)}.quiz-question{font-size:16px;font-weight:600;line-height:1.6;margin-bottom:16px;padding:0 4px}.quiz-options{display:flex;flex-direction:column;gap:8px}.quiz-option{display:flex;align-items:center;gap:10px;width:100%;padding:14px 16px;background:#fff;border:2px solid #f0e8f0;border-radius:var(--radius-sm);cursor:pointer;font-family:var(--font);font-size:15px;transition:all .2s;text-align:left}.quiz-option:hover{border-color:var(--pink-light)}.quiz-option.correct{border-color:var(--green);background:var(--green-light)}.quiz-option.wrong{border-color:#ff6b6b;background:#fff0f0}.option-label{font-size:13px;font-weight:700;color:var(--text-light);width:24px;text-align:center}.option-text{flex:1}.option-icon{font-size:18px}.quiz-result{text-align:center;padding:40px 20px}.quiz-result-stars{font-size:36px;margin-bottom:12px}.quiz-result-score{font-size:28px;font-weight:700;margin-bottom:8px}.quiz-result-msg{font-size:16px;color:var(--text-light)}.reward-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#0006;display:flex;align-items:center;justify-content:center;z-index:1000}.reward-modal{background:#fff;border-radius:24px;padding:32px 28px;text-align:center;max-width:320px;width:90%;box-shadow:0 8px 40px #00000026;animation:popIn .4s ease}@keyframes popIn{0%{transform:scale(.5);opacity:0}to{transform:scale(1);opacity:1}}.reward-pet{font-size:48px;margin-bottom:8px}.reward-title{font-size:18px;font-weight:700;margin-bottom:8px}.reward-score{font-size:36px;font-weight:700;color:var(--pink);margin-bottom:10px}.reward-bar-track{height:8px;background:#f0e8f0;border-radius:4px;overflow:hidden;margin-bottom:12px}.reward-bar-fill{height:100%;background:linear-gradient(90deg,var(--pink),#FF6B6B);border-radius:4px;transition:width .6s ease}.reward-coins{display:flex;align-items:center;justify-content:center;gap:6px;margin-bottom:16px}.reward-coin-icon{font-size:24px}.reward-coin-amount{font-size:22px;font-weight:700;color:#ff8f00}.reward-btn{width:100%}.archive-empty{text-align:center;padding:40px 20px;color:var(--text-light)}.archive-empty-hint{font-size:13px;margin-top:8px;opacity:.7}.archive-list{display:flex;flex-direction:column;gap:10px}.archive-card{background:#fff;border:2px solid #f0e8f0;border-radius:var(--radius);padding:14px;transition:all .2s}.archive-card:hover{border-color:var(--pink-light)}.archive-practiced{border-color:#c8e6c9;background:#f1f8e9}.archive-card-header{display:flex;align-items:center;gap:8px;margin-bottom:6px}.archive-subject-icon{font-size:20px}.archive-grade{font-size:11px;background:#f0e8f0;padding:1px 8px;border-radius:6px;font-weight:600;color:var(--text-light)}.archive-date{font-size:12px;color:var(--text-light);margin-left:auto}.archive-practiced-badge{font-size:11px;color:#2e7d32;font-weight:600;white-space:nowrap}.archive-title{font-size:14px;font-weight:700;margin-bottom:4px}.archive-summary{font-size:12px;color:var(--text-light);margin-bottom:6px}.archive-weak-tags{display:flex;flex-wrap:wrap;gap:4px;margin-bottom:8px}.archive-actions{display:flex;gap:8px;margin-top:8px}@media(max-width:400px){.tutor-subject-icon{font-size:28px}.tutor-subject-card{padding:16px 8px}.quiz-question{font-size:15px}}