:root{--primary: #8b5cf6;--primary-hover: #7c3aed;--bg-warm: #fefaf6;--card-bg: #ffffff;--text-main: #1e1b4b;--text-muted: #475569;--accent-orange: #f97316;--accent-green: #10b981;--accent-red: #ef4444}body{margin:0;font-family:PingFang SC,Microsoft YaHei,sans-serif;background-color:var(--bg-warm);color:var(--text-main)}.game-container{max-width:1024px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column;padding:0 16px}.game-header{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:2px dashed #e2e8f0}.logo-area{display:flex;align-items:center;gap:10px;cursor:pointer}.logo-icon{font-size:32px}.logo-text{font-size:22px;font-weight:800;color:var(--primary);letter-spacing:1px}.nav-btn{display:flex;align-items:center;gap:8px;background:#ede9fe;color:var(--primary);border:none;padding:10px 16px;border-radius:20px;font-weight:700;cursor:pointer;transition:all .2s}.nav-btn:hover{background:#ddd6fe;transform:translateY(-2px)}.game-main{flex:1;padding:20px 0 40px}.home-view{display:flex;flex-direction:column;gap:30px}.hero-section{text-align:center;margin-top:20px}.hero-title{font-size:36px;font-weight:900;color:var(--text-main);margin-bottom:10px}.hero-subtitle{font-size:18px;color:var(--text-muted)}.setup-card{background:var(--card-bg);border:3px solid #e2e8f0;border-radius:24px;padding:30px;box-shadow:0 8px #cbd5e1}.setup-group{margin-bottom:24px}.group-label{display:block;font-size:18px;font-weight:800;margin-bottom:12px;color:var(--text-main)}.grade-selector{display:flex;flex-wrap:wrap;gap:10px}.grade-btn{background:#f1f5f9;border:2px solid transparent;padding:8px 18px;border-radius:12px;font-weight:700;color:var(--text-muted);cursor:pointer;transition:all .2s}.grade-btn.active{background:#f5f3ff;border-color:var(--primary);color:var(--primary)}.subject-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.subject-card{display:flex;flex-direction:column;align-items:center;padding:20px;border-radius:20px;border:3px solid #e2e8f0;background:#fff;cursor:pointer;transition:all .2s}.subject-card .subject-icon{font-size:40px;margin-bottom:10px}.subject-card .subject-name{font-size:18px;font-weight:800;margin-bottom:4px}.subject-card .subject-desc{font-size:13px;color:var(--text-muted)}.subject-card.math.active{border-color:#3b82f6;background-color:#eff6ff}.subject-card.chinese.active{border-color:#10b981;background-color:#ecfdf5}.subject-card.english.active{border-color:#8b5cf6;background-color:#f5f3ff}.summon-btn{width:100%;background:linear-gradient(135deg,#f97316,#ef4444);color:#fff;border:none;padding:18px;border-radius:20px;font-size:20px;font-weight:900;display:flex;justify-content:center;align-items:center;gap:10px;cursor:pointer;box-shadow:0 6px #b91c1c;transition:all .1s}.summon-btn:active{transform:translateY(4px);box-shadow:0 2px #b91c1c}.quick-stats{display:flex;gap:20px;justify-content:center}.stat-box{background:#fff;border:2px solid #e2e8f0;padding:16px 24px;border-radius:16px;display:flex;align-items:center;gap:12px;min-width:180px}.stat-box h4{margin:0;font-size:14px;color:var(--text-muted)}.stat-box p{margin:0;font-size:18px;font-weight:800}.loading-view{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:400px;text-align:center}.magic-portal{position:relative;width:120px;height:120px;margin-bottom:30px}.portal-ring{position:absolute;width:100%;height:100%;border:6px dashed var(--primary);border-radius:50%;animation:spin 4s linear infinite}.portal-monster{position:absolute;font-size:60px;left:50%;top:50%;transform:translate(-50%,-50%);animation:float 2s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes float{0%,to{transform:translate(-50%,-55%)}50%{transform:translate(-50%,-45%)}}.loading-text{font-size:24px;font-weight:900;color:var(--primary);margin-bottom:8px}.loading-subtext{color:var(--text-muted)}.battle-view{display:flex;flex-direction:column;gap:20px}.battle-header{display:flex;justify-content:space-between;align-items:center;background:#fff;padding:16px 24px;border-radius:16px;border:2px solid #e2e8f0}.player-status{display:flex;flex-direction:column;gap:4px}.status-label{font-size:13px;font-weight:700;color:var(--text-muted)}.hearts-row{display:flex;gap:6px}.heart-filled{color:var(--accent-red);fill:var(--accent-red)}.heart-empty{color:#cbd5e1}.battle-progress{display:flex;flex-direction:column;align-items:flex-end;gap:4px;width:150px}.progress-bar-bg{width:100%;height:8px;background:#e2e8f0;border-radius:4px;overflow:hidden}.progress-bar-fill{height:100%;background:var(--primary);border-radius:4px;transition:width .3s ease}.progress-text{font-size:12px;font-weight:700;color:var(--text-muted)}.battle-stage{display:grid;grid-template-columns:1fr 1.2fr;gap:24px}@media (max-width: 768px){.battle-stage{grid-template-columns:1fr}}.monster-showcase{background:#fff;border:3px solid #e2e8f0;border-radius:24px;padding:24px;display:flex;flex-direction:column;align-items:center;box-shadow:0 6px #cbd5e1}.monster-hp-bar{width:100%;margin-bottom:20px}.hp-text{font-size:15px;font-weight:800;margin-bottom:6px}.hp-track{width:100%;height:16px;background:#f1f5f9;border-radius:8px;border:2px solid #cbd5e1;overflow:hidden}.hp-fill{height:100%;background:linear-gradient(90deg,#ef4444,#f97316);transition:width .4s ease-out}.monster-avatar-container{position:relative;width:160px;height:160px;background:#faf5ff;border-radius:50%;display:flex;align-items:center;justify-content:center;border:4px dashed #ddd6fe;margin-bottom:16px}.monster-img{width:100%;height:100%;object-fit:contain;border-radius:50%}.monster-placeholder{font-size:80px}.voice-btn{position:absolute;bottom:0;right:0;background:var(--primary);color:#fff;border:none;width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 2px 4px #0000001a}.monster-speech{background:#f3f4f6;border-radius:16px;padding:12px 16px;position:relative;text-align:center}.monster-speech:before{content:"";position:absolute;top:-10px;left:50%;transform:translate(-50%);border-width:0 10px 10px 10px;border-style:solid;border-color:transparent transparent #f3f4f6 transparent}.monster-speech p{margin:0;font-size:14px;font-weight:700;color:var(--text-muted)}.quiz-area{display:flex;flex-direction:column;gap:16px}.question-box{background:#fffbeb;border:3px solid #fef3c7;border-radius:20px;padding:24px;box-shadow:0 4px #fde68a}.question-tag{background:#f59e0b;color:#fff;padding:4px 10px;border-radius:8px;font-size:12px;font-weight:800;display:inline-block;margin-bottom:12px}.question-text{font-size:20px;font-weight:800;line-height:1.5;margin:0 0 12px}.tts-question-btn{background:none;border:none;color:#d97706;font-size:14px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;gap:4px}.options-grid{display:flex;flex-direction:column;gap:12px}.option-btn{background:#fff;border:3px solid #e2e8f0;border-radius:16px;padding:16px 20px;font-size:16px;font-weight:700;text-align:left;cursor:pointer;display:flex;align-items:center;gap:12px;transition:all .2s;box-shadow:0 4px #cbd5e1}.option-btn:hover:not(:disabled){border-color:var(--primary);background-color:#f5f3ff;transform:translateY(-2px)}.option-letter{background:#f1f5f9;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--text-muted)}.selected-opt{border-color:var(--primary);background-color:#f5f3ff}.correct-opt{border-color:var(--accent-green);background-color:#ecfdf5;box-shadow:0 4px #a7f3d0}.correct-opt .option-letter{background:var(--accent-green);color:#fff}.wrong-opt{border-color:var(--accent-red);background-color:#fef2f2;box-shadow:0 4px #fecaca}.wrong-opt .option-letter{background:var(--accent-red);color:#fff}.disabled-opt{opacity:.6;cursor:not-allowed}.feedback-panel{background:#fff;border:3px solid #e2e8f0;border-radius:20px;padding:20px;box-shadow:0 4px #cbd5e1}.feedback-title{font-size:18px;font-weight:900;margin-bottom:8px}.explanation-text{font-size:14px;color:var(--text-muted);line-height:1.6;margin-bottom:16px}.next-turn-btn{width:100%;background:var(--primary);color:#fff;border:none;padding:12px;border-radius:12px;font-size:16px;font-weight:800;cursor:pointer;display:flex;justify-content:center;align-items:center;gap:6px}.next-turn-btn:hover{background:var(--primary-hover)}.shake-anim{animation:shake .5s ease-in-out}@keyframes shake{0%,to{transform:translate(0)}20%,60%{transform:translate(-8px)}40%,80%{transform:translate(8px)}}.result-view{display:flex;flex-direction:column;align-items:center;text-align:center;padding:40px 20px}.result-badge{font-size:72px;margin-bottom:16px;animation:bounce 1s infinite alternate}@keyframes bounce{to{transform:translateY(-10px)}}.result-title{font-size:32px;font-weight:900;margin-bottom:8px}.result-subtitle{font-size:16px;color:var(--text-muted);max-width:600px;margin-bottom:30px}.victory-card{background:#fff;border:3px solid #e2e8f0;border-radius:24px;padding:24px;display:flex;gap:24px;align-items:center;text-align:left;max-width:550px;width:100%;box-shadow:0 6px #cbd5e1;margin-bottom:30px}.monster-trophy{position:relative;width:120px;height:120px;background:#faf5ff;border-radius:16px;display:flex;align-items:center;justify-content:center}.trophy-img{width:100%;height:100%;object-fit:contain}.trophy-emoji{font-size:60px}.card-tag{position:absolute;bottom:-10px;left:50%;transform:translate(-50%);background:#8b5cf6;color:#fff;font-size:11px;font-weight:800;padding:2px 8px;border-radius:8px;white-space:nowrap}.victory-details h3{margin:0 0 10px;font-size:18px;font-weight:800}.victory-details ul{margin:0;padding-left:20px;font-size:14px;color:var(--text-muted);display:flex;flex-direction:column;gap:6px}.learning-chart-box{background:#fff;border:3px solid #e2e8f0;border-radius:24px;padding:20px;width:100%;max-width:550px;box-shadow:0 6px #cbd5e1;margin-bottom:30px}.chart-title{margin:0 0 16px;font-size:16px;font-weight:800;text-align:left}.svg-chart-container{width:100%}.learning-svg{width:100%;height:auto;background:#f8fafc;border-radius:12px}.chart-labels{display:flex;justify-content:space-between;font-size:12px;color:var(--text-muted);margin-top:8px;padding:0 10px}.defeat-tips{background:#fff7ed;border:3px solid #ffedd5;border-radius:20px;padding:24px;max-width:550px;text-align:left;margin-bottom:30px}.defeat-tips h3{margin:0 0 10px;color:#c2410c;font-size:18px}.defeat-tips p{margin:0;font-size:14px;color:#9a3412;line-height:1.6}.result-actions{display:flex;gap:16px}.primary-btn{background:var(--primary);color:#fff;border:none;padding:14px 24px;border-radius:16px;font-size:16px;font-weight:800;cursor:pointer;display:flex;align-items:center;gap:8px;box-shadow:0 4px #6d28d9}.primary-btn:hover{background:var(--primary-hover)}.secondary-btn{background:#fff;color:var(--primary);border:3px solid var(--primary);padding:12px 22px;border-radius:16px;font-size:16px;font-weight:800;cursor:pointer;display:flex;align-items:center;gap:8px}.book-view{display:flex;flex-direction:column;gap:24px}.book-header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px dashed #cbd5e1;padding-bottom:16px}.book-title{font-size:28px;font-weight:900;margin:0 0 6px}.book-subtitle{margin:0;color:var(--text-muted)}.clear-btn{background:#fee2e2;color:var(--accent-red);border:none;padding:8px 16px;border-radius:10px;font-weight:700;cursor:pointer}.empty-book{text-align:center;padding:60px 20px}.empty-icon{font-size:60px;margin-bottom:16px}.wrongs-list{display:flex;flex-direction:column;gap:20px}.wrong-item-card{background:#fff;border:3px solid #e2e8f0;border-radius:20px;padding:24px;box-shadow:0 4px #cbd5e1}.wrong-item-meta{display:flex;gap:8px;margin-bottom:12px;flex-wrap:wrap}.meta-tag{font-size:12px;font-weight:800;padding:4px 8px;border-radius:6px}.meta-tag.subject{background:#f5f3ff;color:var(--primary)}.meta-tag.grade{background:#eff6ff;color:#2563eb}.meta-tag.monster{background:#fff7ed;color:#ea580c}.wrong-item-q{font-size:18px;font-weight:800;margin:0 0 16px}.wrong-item-options{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}.wrong-opt-show{padding:10px 16px;border-radius:10px;background:#f8fafc;font-size:14px;font-weight:700}.correct-highlight{background:#ecfdf5;border:2px solid #10b981;color:#065f46}.wrong-item-explanation{background:#f8fafc;border-left:4px solid var(--primary);padding:12px 16px;border-radius:0 12px 12px 0}.exp-badge{font-size:12px;font-weight:800;color:var(--primary);display:block;margin-bottom:4px}.wrong-item-explanation p{margin:0;font-size:14px;color:var(--text-muted);line-height:1.5}.book-footer{display:flex;justify-content:center;margin-top:20px}