@import"https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@400;600;700&display=swap";:root{--primary-dark: #0A1628;--secondary-dark: #1A2744;--accent-gold: #F5C842;--accent-coral: #FF6B6B;--text-primary: #FFFFFF;--text-secondary: #A8B4C4;--success-green: #4ADE80;--warning-orange: #FB923C;--card-shadow: 0 4px 20px rgba(0, 0, 0, .3);--border-radius: 16px;--border-radius-lg: 24px;--safe-bottom: env(safe-area-inset-bottom, 0px);--safe-top: env(safe-area-inset-top, 0px);--tabbar-height: 80px}*{margin:0;padding:0;box-sizing:border-box}html,body,#root{min-height:100%;height:100%;font-family:Noto Sans JP,sans-serif;background:var(--primary-dark);color:var(--text-primary);-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;min-height:100svh;min-height:100dvh;max-width:100%;overflow:hidden}.header{padding:calc(8px + var(--safe-top)) 14px 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JP",serif;font-size:4.4rem;opacity:.03;writing-mode:vertical-rl}.hero-title{font-family:"Noto Serif JP",serif;font-size:1.5rem;font-weight:700;text-align:center;margin-bottom:4px}.hero-section.compact .hero-title{font-size:1.1rem;margin-bottom:2px}.hero-subtitle{font-size:.84rem;color:var(--text-secondary);text-align:center}.hero-section.compact .hero-subtitle{font-size:.74rem}.progress-bar{display:flex;align-items:center;gap:10px;margin-bottom:10px}.progress-info{flex:1}.progress-label{display:flex;justify-content:space-between;font-size:.75rem;color:var(--text-secondary);margin-bottom:6px}.progress-track{height:8px;background:var(--secondary-dark);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--accent-gold) 0%,var(--accent-coral) 100%);border-radius:4px;transition:width .5s ease}.progress-stats{display:flex;gap:16px;margin-top:16px}.stat-item{flex:1;padding:16px;background:var(--secondary-dark);border-radius:var(--border-radius);text-align:center}.stat-value{font-size:1.5rem;font-weight:700;color:var(--accent-gold)}.stat-label{font-size:.7rem;color:var(--text-secondary);margin-top:4px}.flashcard-container{perspective:1000px;margin-bottom:10px}.flashcard{position:relative;width:100%;min-height:clamp(300px,54vh,460px);cursor:pointer;transform-style:preserve-3d;transition:transform .6s ease}.flashcard.flipped{transform:rotateY(180deg)}.flashcard-face{position:absolute;width:100%;min-height:clamp(300px,54vh,460px);backface-visibility:hidden;border-radius:var(--border-radius-lg);padding:22px 18px;display:flex;flex-direction:column;justify-content:center;align-items:center;overflow-y:auto}.flashcard-front{background:linear-gradient(145deg,var(--secondary-dark) 0%,#243354 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rgba(251,146,60,.35);color:#ffd6ba;font-size:.78rem}.speech-controls{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:10px;font-size:.78rem;color:var(--text-secondary)}.speech-controls.compact{margin-bottom:8px}.voice-controls{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:10px}.voice-label{font-size:.78rem;color:var(--text-secondary)}.voice-select{flex:1 1 180px;min-height:44px;border-radius:10px;border:1px solid rgba(255,255,255,.2);background:#ffffff0d;color:var(--text-primary);padding:10px 12px;font-size:.78rem}.voice-actions-row{display:flex;gap:8px;flex-wrap:wrap}.chip{padding:10px 12px;min-height:44px;border-radius:999px;border:1px solid rgba(255,255,255,.2);background:#ffffff0d;color:var(--text-primary);font-size:.78rem;cursor:pointer}.chip.active{border-color:var(--accent-gold);background:#f5c84233;color:var(--accent-gold)}.vocab-top-row{position:relative;display:flex;align-items:center;gap:8px;margin-bottom:8px}.quick-jump-row{display:inline-flex;align-items:center;gap:6px;margin-left:auto}.position-chip{display:inline-flex;align-items:center;min-height:32px;padding:4px 10px;border-radius:999px;background:#ffffff14;color:var(--text-secondary);font-size:.74rem}.vocab-controls-panel{background:#1a27448c;border:1px solid rgba(255,255,255,.08);border-radius:12px;padding:8px 10px}.vocab-controls-panel summary{list-style:none;cursor:pointer;font-size:.8rem;color:var(--text-secondary);min-height:36px;display:flex;align-items:center}.vocab-controls-panel summary::-webkit-details-marker{display:none}.vocab-controls-panel.corner{position:relative;margin:0;width:fit-content;padding:0;border-radius:999px;background:#ffffff0f;border:1px solid rgba(255,255,255,.2)}.vocab-controls-panel.corner summary{min-height:36px;min-width:36px;justify-content:center;font-size:1rem;padding:0 8px}.vocab-controls-panel.corner[open]{position:absolute;right:0;top:0;z-index:25;width:min(92vw,360px);border-radius:12px;padding:8px;background:#101c34fa}.vocab-controls-panel.corner[open] 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12px}.jump-btn{padding-left:12px;padding-right:12px}.flashcard-meaning{font-size:1.5rem;font-weight:600;margin-bottom:16px;text-align:center}.flashcard-example{padding:16px;background:#0003;border-radius:var(--border-radius);text-align:center}.flashcard-example-jp{font-size:1rem;margin-bottom:8px;line-height:1.9}.flashcard-example-jp ruby{ruby-position:over;ruby-align:center}.flashcard-example-jp rt{font-size:.62em;color:var(--accent-gold);font-weight:600;letter-spacing:.01em;opacity:.95}.flashcard-example-cn{font-size:.8rem;color:var(--text-secondary)}.grammar-notes{width:100%;margin-top:10px;padding:10px 12px;border-radius:12px;background:#060c1c59;border:1px solid rgba(255,255,255,.08)}.grammar-notes-title{font-size:.76rem;color:var(--accent-gold);margin-bottom:8px;font-weight:700}.grammar-notes-list{display:flex;flex-direction:column;gap:6px}.grammar-note-item{padding:7px 8px;border-radius:9px;background:#ffffff0a}.grammar-note-label{font-size:.75rem;color:#f2f6ff;font-weight:600}.grammar-note-detail{margin-top:2px;font-size:.7rem;color:var(--text-secondary);line-height:1.35}.flashcard-level{position:absolute;top:16px;right:16px;padding:4px 12px;border-radius:20px;font-size:.7rem;font-weight:600}.flashcard-level.N5{background:var(--success-green);color:var(--primary-dark)}.flashcard-level.N4{background:var(--accent-gold);color:var(--primary-dark)}.flashcard-level.N3{background:#60a5fa;color:var(--primary-dark)}.flashcard-level.N2{background:#a78bfa;color:#fff}.flashcard-level.N1{background:#f43f5e;color:#fff}.action-hint{font-size:.78rem;color:var(--text-secondary);text-align:center;margin:-4px 0 10px}.action-buttons{display:flex;gap:12px;margin-top:16px;margin-bottom:8px;position:static}.action-btn{flex:1;min-height:48px;padding:14px 12px;border:none;border-radius:var(--border-radius);font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease}.action-btn:active{transform:scale(.95)}.action-btn.feedback-pulse{animation:buttonPulse .32s ease}.action-btn.review{background:var(--warning-orange);color:var(--primary-dark)}.action-btn.mastered{background:var(--success-green);color:var(--primary-dark)}.action-feedback{margin-top:10px;text-align:center;font-size:.78rem;font-weight:600;animation:feedbackPop .32s ease}.action-feedback.mastered{color:var(--success-green)}.action-feedback.review{color:var(--warning-orange)}.scenario-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.scenario-card{padding:16px;min-height:96px;background:var(--secondary-dark);border-radius:var(--border-radius);box-shadow:var(--card-shadow);cursor:pointer;transition:all .2s ease}.scenario-card:active{transform:scale(.98)}.scenario-icon{font-size:2rem;margin-bottom:12px}.scenario-title{font-size:1.1rem;font-weight:600;margin-bottom:4px}.scenario-title-cn{font-size:.85rem;color:var(--text-secondary)}.chat-container{display:flex;flex-direction:column;min-height:clamp(360px,calc(100dvh - 220px),780px);min-height:clamp(360px,calc(100svh - 220px),780px)}.chat-header{display:flex;align-items:center;gap:12px;padding:16px;background:var(--secondary-dark);border-radius:var(--border-radius);margin-bottom:16px}.chat-header-icon{font-size:2rem}.chat-header-info h3{font-size:1rem;margin-bottom:2px}.chat-header-info p{font-size:.75rem;color:var(--text-secondary)}.chat-tap-hint{font-size:.72rem;color:var(--text-secondary);margin:2px 2px 8px}.chat-messages{flex:1;overflow-y:auto;padding:16px 0;display:flex;flex-direction:column;gap:12px}.chat-bubble{max-width:80%;width:fit-content;min-height:44px;padding:12px 16px;border-radius:var(--border-radius);font-size:.9rem;line-height:1.5;cursor:pointer;border:none;text-align:left;touch-action:manipulation;-webkit-tap-highlight-color:rgba(245,200,66,.18)}.chat-bubble.customer{align-self:flex-start;background:var(--secondary-dark)}.chat-bubble.staff{align-self:flex-end;background:linear-gradient(135deg,var(--accent-gold) 0%,#E5B53A 100%);color:var(--primary-dark)}.chat-bubble:active{transform:scale(.98)}.chat-bubble:focus-visible{outline:2px solid rgba(245,200,66,.8);outline-offset:2px}.chat-role{font-size:.65rem;color:var(--text-secondary);margin-bottom:4px}.chat-translation{margin-top:6px;font-size:.76rem;line-height:1.45;opacity:.9}.chat-bubble.staff .chat-role{color:#0a162899;text-align:right}.phrase-bank{padding:16px;background:var(--secondary-dark);border-radius:var(--border-radius)}.phrase-bank-title{font-size:.75rem;color:var(--text-secondary);margin-bottom:12px}.phrase-chips{display:flex;flex-wrap:wrap;gap:8px}.phrase-chip{padding:8px 12px;background:#f5c84226;border:1px solid var(--accent-gold);border-radius:20px;font-size:.75rem;color:var(--accent-gold);cursor:pointer;transition:all .2s ease}.phrase-chip:active{transform:scale(.95);background:#f5c8424d}.empty-state{text-align:center;padding:48px 24px;color:var(--text-secondary)}.empty-icon{font-size:4rem;margin-bottom:16px}.empty-title{font-size:1.2rem;color:var(--text-primary);margin-bottom:8px}.empty-text{font-size:.9rem}.back-btn{display:flex;align-items:center;gap:8px;min-height:44px;padding:12px 16px;background:var(--secondary-dark);border:none;border-radius:var(--border-radius);color:var(--text-primary);font-size:.9rem;cursor:pointer;margin-bottom:12px;transition:all .2s ease}.back-btn:active{transform:scale(.98)}.stats-card{padding:20px;background:var(--secondary-dark);border-radius:var(--border-radius);margin-bottom:16px}.stats-card-title{font-size:.85rem;color:var(--text-secondary);margin-bottom:16px}.reset-btn{width:100%;padding:14px;background:transparent;border:1px solid var(--accent-coral);border-radius:var(--border-radius);color:var(--accent-coral);font-size:.9rem;cursor:pointer;transition:all .2s ease;margin-top:24px}.reset-btn:active{background:var(--accent-coral);color:var(--primary-dark)}@keyframes buttonPulse{0%{transform:scale(1);filter:brightness(1)}50%{transform:scale(1.04);filter:brightness(1.08)}to{transform:scale(1);filter:brightness(1)}}@keyframes feedbackPop{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .3s ease}@media(min-width:768px){.main-content{max-width:600px;margin:0 auto}.hero-title{font-size:3rem}.scenario-grid{grid-template-columns:repeat(3,1fr)}}