.word-match-page{padding:20px;max-width:1000px;margin:0 auto}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.game-stats{display:flex;gap:20px;background:linear-gradient(135deg,#667eea,#764ba2);padding:15px 25px;border-radius:15px;color:#fff}.stat-item{display:flex;align-items:center;gap:8px;font-size:16px}.stat-item strong{font-size:20px;font-weight:700}.game-info{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff;padding:15px 20px;border-radius:15px;text-align:center;margin-bottom:30px}.game-info p{margin:0;font-size:16px}.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:15px;margin-bottom:30px;perspective:1000px}.match-card{position:relative;width:100%;padding-bottom:100%;cursor:pointer;transition:all .3s ease}.match-card:hover:not(.matched){transform:scale(1.05)}.card-content{position:absolute;width:100%;height:100%;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;box-shadow:0 4px 8px #0003;padding:10px;text-align:center;word-break:break-word;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;transition:all .3s ease}.match-card.selected .card-content{background:linear-gradient(135deg,#f093fb,#f5576c);transform:scale(.95);box-shadow:0 0 20px #f093fb99}.match-card.matched{animation:matchAnimation .6s ease forwards}.match-card.matched .card-content{background:linear-gradient(135deg,#a8edea,#fed6e3);color:#333}@keyframes matchAnimation{0%{transform:scale(1);opacity:1}50%{transform:scale(1.2);opacity:1}to{transform:scale(0);opacity:0}}.game-actions{display:flex;justify-content:center;gap:15px;margin-top:30px}.btn{padding:12px 30px;font-size:16px;font-weight:700;border:none;border-radius:25px;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 6px #0000001a}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 12px #00000026}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-secondary{background:linear-gradient(135deg,#f093fb,#f5576c);color:#fff}.loading{text-align:center;padding:50px;font-size:18px;color:#667eea}@media (max-width: 768px){.word-match-page{padding:15px}.game-header{flex-direction:column;gap:15px;align-items:stretch}.game-stats{justify-content:center}.cards-grid{grid-template-columns:repeat(3,1fr);gap:10px}.card-front,.card-back{font-size:14px}.card-front{font-size:30px}.game-actions{flex-direction:column}.btn{width:100%}}.toast-wrapper{position:fixed;top:16px;left:50%;transform:translate(-50%);display:flex;flex-direction:column;gap:12px;z-index:3000;width:min(90vw,360px);pointer-events:none}.toast-item{display:flex;gap:10px;padding:12px 14px;border-radius:12px;box-shadow:0 12px 24px #0000002e;border:1px solid rgba(255,255,255,.25);background:#fffffff2;color:#2b2d42;align-items:center;pointer-events:auto;animation:toast-enter .24s ease-out}.toast-content{flex:1;display:flex;flex-direction:column;gap:4px}.toast-title{font-weight:600;color:#1d1f37}.toast-message{font-size:.95em;line-height:1.4}.toast-icon{font-size:1.4em}.toast-close{border:none;background:transparent;color:inherit;font-size:1.2em;padding:2px;cursor:pointer;opacity:.7}.toast-close:hover{opacity:1}.toast-info{border-left:4px solid #4c6ef5}.toast-success{border-left:4px solid #51cf66}.toast-warning{border-left:4px solid #fcc419}.toast-error{border-left:4px solid #ff6b6b}@keyframes toast-enter{0%{opacity:0;transform:translate(-50%,-20px)}to{opacity:1;transform:translate(-50%)}}@media (max-width: 640px){.toast-wrapper{top:12px}}.word-snap-page{display:flex;flex-direction:column;gap:20px;padding-bottom:40px;min-height:calc(100vh - 120px)}.word-snap-page .game-header{display:flex;flex-direction:column;gap:12px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.game-hud{display:flex;flex-direction:column;gap:12px}.mobile-only{display:none}.toolbar-info{display:flex;align-items:center;gap:12px}.toolbar-stats{display:flex;align-items:center;gap:12px;font-size:.85em;color:#4b4f86}.toolbar-actions{display:flex;align-items:center;gap:8px}.focus-rule{border-radius:999px;border:1px solid rgba(102,126,234,.35);background:#667eea17;color:#404488;padding:6px 16px;font-weight:600;cursor:pointer;transition:all .2s ease}.focus-rule:hover{border-color:#667eea99;background:#667eea2e}.word-snap-page.focus-mode{gap:12px}.word-snap-page.focus-mode .game-hud{display:none}.hud-main{display:flex;flex-direction:column;gap:8px}.hud-side{display:flex;flex-direction:column;gap:10px;width:100%}.player-summary{display:flex;gap:8px;flex-wrap:wrap;justify-content:space-between;width:100%}.summary-chip{background:linear-gradient(135deg,#667eea1f,#764ba21a);border:1px solid rgba(102,126,234,.18);border-radius:12px;padding:10px 14px;min-width:110px;text-align:center}.chip-label{display:block;font-size:.75em;color:#4f5391;letter-spacing:.02em}.chip-value{display:block;font-weight:700;font-size:1.2em;color:#2e336d}.hud-buttons{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-start}.hud-button{padding:8px 16px;border-radius:999px;border:1px solid rgba(102,126,234,.35);background:#fff;color:#4b4f86;font-weight:600;cursor:pointer;transition:all .2s ease}.hud-button:hover{border-color:#667eea;color:#2f3270;box-shadow:0 6px 16px #667eea33}.snap-stats-compact{display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px}.stat-chip{background:#fff;border-radius:12px;padding:10px 12px;border:1px solid rgba(102,126,234,.16);text-align:center;color:#4b4f86;box-shadow:0 4px 14px #667eea14}.stat-chip span{display:block;font-size:.82em;margin-bottom:4px}.stat-chip strong{font-size:1.15em;color:#2c2f62}.snap-stats-detail{background:#fffffff5;border-radius:16px;border:1px solid rgba(102,126,234,.2);padding:16px 18px;box-shadow:0 8px 30px #667eea26}.snap-stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}.detail-item span{display:block;font-size:.8em;color:#6266a0;margin-bottom:4px}.detail-item strong{font-size:1.1em;color:#2e336d}.snap-tip-banner{background:linear-gradient(90deg,#667eea2e,#764ba233);border:1px dashed rgba(102,126,234,.5);border-radius:14px;padding:10px 16px;color:#394099;font-weight:600;text-align:center}.snap-stage{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;gap:8px}.snap-stage.focus-active{flex:1 1 auto}.snap-stage-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:4px 4px 0}.focus-toggle{border-radius:999px;border:1px solid rgba(102,126,234,.4);background:#fff;color:#4b4f86;font-weight:600;padding:6px 16px;cursor:pointer;transition:all .2s ease}.focus-toggle:hover{border-color:#667eea;color:#2f3270;box-shadow:0 6px 16px #667eea33}.focus-toggle[aria-pressed=true]{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-color:#667eeae6;box-shadow:0 10px 24px #667eea40}.snap-stage.is-empty{flex:0 0 auto}.snap-table{display:grid;grid-template-columns:repeat(auto-fit,minmax(118px,1fr));gap:8px;flex:1 1 auto;background:linear-gradient(180deg,#f8f9ffe6,#eef0ffe6);border-radius:18px;padding:10px 10px 70px;border:1px solid rgba(102,126,234,.15);overflow:auto;overscroll-behavior:contain;min-height:clamp(200px,52vh,480px);max-height:clamp(240px,70vh,580px)}.snap-table-placeholder{padding:14px 12px;border-radius:16px;border:1px dashed rgba(102,126,234,.35);background:#f8f9ffeb;color:#4a4f86;text-align:center;font-weight:600;font-size:.9em;box-shadow:0 6px 16px #667eea14}.snap-table-empty{grid-column:1 / -1;text-align:center;color:#6f7398;padding:40px 0}.snap-card{background:#fff;border-radius:14px;padding:9px;border:1px solid rgba(102,126,234,.12);box-shadow:0 4px 10px #667eea14;display:flex;flex-direction:column;gap:3px;min-height:98px}.snap-card.highlight{border-color:#d65745cc;box-shadow:0 8px 20px #d6574533;transform:translateY(-4px)}.snap-card .card-theme{display:flex;flex-direction:column;align-items:flex-start;gap:6px;color:#4c54a3;font-weight:600}.snap-card .card-icon-group{display:flex;flex-wrap:wrap;gap:2px;font-size:1em}.snap-card .card-meta{display:flex;align-items:center;justify-content:space-between;gap:6px;width:100%}.snap-card .card-owner{font-size:.75em;color:#8488b8}.snap-card .card-icon{font-size:1.05em}.snap-card .card-word{font-size:1em;font-weight:600;color:#212352}.snap-card .card-meaning{color:#61638d;font-size:.82em}.snap-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;padding:12px;position:sticky;bottom:0;background:linear-gradient(180deg,#f8f9fff2,#edf0fff5);border-radius:16px;box-shadow:0 -6px 18px #667eea1f}.snap-actions .btn{min-width:110px}.snap-quiz-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;align-items:center;justify-content:center;z-index:2000;padding:20px}.snap-quiz{background:#fff;border-radius:20px;padding:24px;max-width:min(400px,90vw);width:100%;box-shadow:0 18px 40px #00000040;text-align:center}.snap-quiz h3{margin-bottom:16px;color:#333770}.snap-quiz-options{display:flex;flex-direction:column;gap:12px}.snap-quiz-option{padding:12px 16px;border-radius:12px;border:2px solid rgba(102,126,234,.25);background:#f5f6ff;color:#333770;font-weight:600;cursor:pointer;transition:all .2s ease}.snap-quiz-option:hover{border-color:#667eea;background:#667eea26}.rule-modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1d203fa6;display:flex;align-items:center;justify-content:center;z-index:2100;padding:24px}.rule-modal{position:relative;max-width:min(520px,95vw);background:#fff;border-radius:20px;padding:28px 28px 24px;box-shadow:0 24px 60px #00000047;color:#2f3270}.rule-modal h2{margin:0 0 16px;font-size:1.6em;text-align:center;color:#2b3070}.rule-modal-close{position:absolute;top:14px;right:14px;border:none;background:transparent;font-size:1.4em;cursor:pointer;color:#6c70a1}.rule-modal-close:hover{color:#303479}.rule-list{margin:0 0 20px;padding-left:22px;line-height:1.6;color:#424672}.rule-list li{margin-bottom:8px}.rule-footer{display:flex;justify-content:center}.round-summary-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#16183699;display:flex;align-items:center;justify-content:center;z-index:2205;padding:20px}.round-summary-card{width:min(360px,92vw);background:#fff;border-radius:20px;padding:24px 24px 20px;box-shadow:0 20px 45px #00000040;text-align:center;color:#2d3170}.round-summary-icon{width:64px;height:64px;border-radius:18px;margin:0 auto 12px;display:flex;align-items:center;justify-content:center;font-size:2rem}.round-summary-icon.is-player{background:#667eea2e}.round-summary-icon.is-bot{background:#ffae5c33}.round-summary-message{margin:8px 0;font-weight:600;color:#3b3f82}.round-summary-detail{margin-bottom:16px;font-size:.9em;color:#5c618f}.onboarding-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1c1e3c73;z-index:2050;pointer-events:none}.onboarding-bubble{position:absolute;max-width:280px;background:#fff;border-radius:18px;padding:18px 20px;box-shadow:0 18px 40px #00000040;border:1px solid rgba(102,126,234,.3);pointer-events:auto;color:#2e326d}.onboarding-bubble:after{content:"";position:absolute;width:18px;height:18px;background:#fff;border-left:1px solid rgba(102,126,234,.3);border-top:1px solid rgba(102,126,234,.3);transform:rotate(45deg)}.onboarding-bubble.step-start{bottom:180px;right:60px}.onboarding-bubble.step-start:after{bottom:-9px;right:48px}.onboarding-bubble.step-ring{bottom:180px;left:50%;transform:translate(-50%)}.onboarding-bubble.step-ring:after{bottom:-9px;left:50%;transform:translate(-50%) rotate(45deg)}.onboarding-bubble.step-stats{top:140px;right:60px}.onboarding-bubble.step-stats:after{top:-9px;right:48px;transform:rotate(225deg)}.bubble-step{font-size:.8em;color:#5a5fa3;letter-spacing:.02em}.bubble-actions{margin-top:16px;display:flex;justify-content:space-between;gap:12px}.bubble-skip,.bubble-next{flex:1 1 0;border-radius:999px;padding:8px 12px;font-weight:600;cursor:pointer;border:none}.bubble-skip{background:#667eea1f;color:#4b4f86}.bubble-next{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 8px 18px #667eea3d}.bubble-next:hover{transform:translateY(-1px)}@media (max-width: 768px){.mobile-only{display:block;font-size:1.4em}.summary-chip{flex:1 1 30%;min-width:0;padding:8px 10px}.chip-value{font-size:1.05em}.snap-stats-compact{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.snap-stats-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.snap-stats-detail{padding:12px 14px}.snap-table{grid-template-columns:repeat(auto-fit,minmax(120px,1fr));min-height:clamp(200px,56vh,520px);max-height:clamp(240px,80vh,660px);padding:10px 10px 64px}.snap-card{padding:10px}.snap-actions{gap:10px}.snap-actions .btn{flex:1 1 calc(50% - 10px)}.snap-stage{flex:0 0 auto}.snap-table-placeholder{padding:12px 10px;font-size:.85em}.onboarding-bubble.step-start,.onboarding-bubble.step-ring,.onboarding-bubble.step-stats{top:auto;bottom:110px;left:50%;right:auto;transform:translate(-50%)}.onboarding-bubble.step-start:after,.onboarding-bubble.step-ring:after,.onboarding-bubble.step-stats:after{bottom:-9px;left:50%;right:auto;top:auto;transform:translate(-50%) rotate(45deg)}}@media (max-width: 640px){.snap-stage-toolbar{flex-direction:column;align-items:stretch;padding:0}.focus-hint{text-align:left;font-size:.76em}.snap-table{grid-template-columns:repeat(auto-fit,minmax(110px,1fr));min-height:clamp(220px,58vh,520px);max-height:clamp(280px,68vh,620px);padding:8px 8px 64px;gap:8px}.snap-card{padding:8px;min-height:100px}.snap-card .card-word{font-size:1.02em}.snap-card .card-meaning{font-size:.82em}}.word-snap-page.focus-mode .snap-stage{gap:12px}.word-snap-page.focus-mode .snap-table,.snap-table.is-focus{min-height:clamp(280px,70vh,720px);max-height:none}@media (min-width: 1024px){.game-hud{flex-direction:row;justify-content:space-between;align-items:flex-start;gap:16px}.hud-main{flex:1 1 320px}.hud-side{width:auto;align-items:flex-end}.player-summary{width:auto;justify-content:flex-end}.hud-buttons{justify-content:flex-end}}.round-summary-cards{margin:12px 0 18px;max-height:60vh;overflow:auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;padding-right:4px}.round-summary-cards .summary-card{border:1px solid rgba(102,126,234,.18);box-shadow:0 6px 18px #667eea1f}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #667eea;--secondary-color: #764ba2;--success-color: #38ef7d;--success-start: #11998e;--danger-color: #f45c43;--danger-start: #eb3349;--warning-color: #ff9800;--bg-color: #f5f7fa;--card-bg: #ffffff;--text-color: #333;--text-light: #666;--border-radius: 20px;--box-shadow: 0 20px 60px rgba(0, 0, 0, .3)}body{font-family:Microsoft YaHei,Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px;color:var(--text-color);line-height:1.6}#root{width:100%;display:flex;justify-content:center;align-items:center}.container{max-width:1200px;width:100%;background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;padding:40px;animation:fadeIn .5s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.main-layout{min-height:100vh;display:flex;flex-direction:column;justify-content:center;align-items:center;width:100%}.main-content{flex:1;width:100%;display:flex;justify-content:center;align-items:center}h1,.page-title{text-align:center;color:#667eea;font-size:3em;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,.1)}.subtitle{text-align:center;color:#666;font-size:1.2em;margin-bottom:30px}.score-board{display:flex;justify-content:space-around;margin:20px 0;padding:20px;background:#f8f9fa;border-radius:10px}.score-item{text-align:center}.score-label{font-size:.9em;color:#666;margin-bottom:5px}.score-value{font-size:2em;font-weight:700;color:#667eea}.game-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px;margin:40px 0}.game-card{background:linear-gradient(135deg,#f093fb,#f5576c);border-radius:15px;padding:30px;text-align:center;cursor:pointer;transition:all .3s ease;box-shadow:0 4px 15px #0003;text-decoration:none;color:#fff}.game-card:hover{transform:translateY(-5px) scale(1.05);box-shadow:0 8px 25px #0000004d}.game-card:nth-child(1){background:linear-gradient(135deg,#fa709a,#fee140)}.game-card:nth-child(2){background:linear-gradient(135deg,#30cfd0,#330867)}.game-card:nth-child(3){background:linear-gradient(135deg,#a8edea,#fed6e3);color:#333}.game-card:nth-child(4){background:linear-gradient(135deg,#ffecd2,#fcb69f);color:#333}.game-icon{font-size:4em;margin-bottom:15px}.game-title{font-size:1.5em;font-weight:700;margin-bottom:10px}.game-desc{font-size:.9em;opacity:.9}.word-card{background:#fff;border-radius:15px;padding:30px;margin:20px auto;max-width:500px;box-shadow:0 10px 30px #0003;text-align:center;cursor:pointer;transition:all .3s ease}.word-card:hover{transform:scale(1.05);box-shadow:0 15px 40px #0000004d}.word-emoji{font-size:5em;margin-bottom:20px}.word-english{font-size:3em;color:#667eea;font-weight:700;margin-bottom:10px}.word-chinese{font-size:2em;color:#666;margin-bottom:20px}.word-example{font-size:1.1em;color:#333;font-style:italic;margin-bottom:5px}.word-example-cn{font-size:1em;color:#666}.hint-text{margin-top:20px;color:#999;font-size:.9em}.product-detail-page{display:flex;flex-direction:column;gap:40px}.product-hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:40px;align-items:center}.product-hero__info{display:flex;flex-direction:column;gap:16px}.product-hero__tag{display:inline-block;padding:6px 16px;border-radius:999px;background:linear-gradient(135deg,#ff9a9e,#fad0c4);color:#fff;font-weight:700;width:fit-content}.product-hero__title{font-size:2.6em;color:#4a3aff}.product-hero__subtitle{font-size:1.1em;color:#555;line-height:1.8}.product-hero__price{display:flex;flex-direction:column;gap:6px}.product-hero__price .price{font-size:2em;font-weight:700;color:#ff6b6b}.product-hero__price .price-label{font-size:.95em;color:#888}.product-hero__highlights{list-style:none;display:flex;flex-direction:column;gap:10px;background:#f8f9ff;border-radius:14px;padding:20px;border:1px solid rgba(102,126,234,.15);color:#444}.product-hero__cover img{width:100%;border-radius:20px;box-shadow:0 25px 60px #667eea40}.product-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.product-gallery img{width:100%;height:auto;border-radius:18px;box-shadow:0 10px 30px #0000001f;background:#fff;padding:12px;object-fit:contain}.product-section{background:#fdfdff;border-radius:18px;padding:30px;box-shadow:0 12px 40px #667eea26}.product-section h2{font-size:1.8em;margin-bottom:20px;color:#4a3aff}.product-section__list{list-style:none;display:flex;flex-direction:column;gap:14px;color:#444;font-size:1.05em}.product-section__list.numbered{list-style:decimal inside}.product-section__cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px}.product-card{background:#fff;border-radius:16px;padding:24px;box-shadow:0 15px 35px #0000001f;display:flex;flex-direction:column;gap:12px;color:#444}.product-card h3{font-size:1.3em;color:#333}.product-footer{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border-radius:18px;padding:24px 32px}.product-footer__price{display:flex;flex-direction:column;gap:6px}.product-footer__price .price{font-size:2.2em;font-weight:700}.product-footer__price .price-note{font-size:.95em;opacity:.85}.product-footer__btn{background:#fff;color:#4a3aff;border:none;border-radius:999px;padding:14px 36px;font-size:1.05em;font-weight:700;cursor:pointer;transition:transform .2s ease,box-shadow .2s ease}.product-footer__btn:hover{transform:translateY(-3px);box-shadow:0 12px 30px #ffffff4d}@media (max-width: 768px){.product-detail-page{gap:24px}.product-hero__title{font-size:2.2em}.product-section{padding:24px}.product-footer{flex-direction:column;gap:16px;text-align:center}}.progress-bar{width:100%;height:30px;background:#e0e0e0;border-radius:15px;overflow:hidden;margin:20px 0}.speech-support-tip{background:#fff8e1;color:#8a6d3b;border:1px solid #f8dda4;border-radius:12px;padding:12px 16px;margin-bottom:16px;font-size:.95em;line-height:1.4}.floating-lesson-button{position:fixed;right:24px;top:50%;transform:translateY(-50%);padding:18px 24px;border-radius:999px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;font-weight:600;border:none;box-shadow:0 10px 25px #667eea59;cursor:grab;z-index:1050;display:inline-flex;align-items:center;gap:8px;-webkit-user-select:none;user-select:none;touch-action:none}.floating-lesson-button:hover{transform:translateY(-2px);box-shadow:0 14px 30px #667eea73}.floating-lesson-button.dragging{opacity:.9;box-shadow:0 20px 40px #667eea73;cursor:grabbing}.lesson-picker-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1414148c;display:flex;align-items:center;justify-content:center;z-index:1100;padding:20px}.lesson-picker-modal{background:#fff;width:min(720px,100%);max-height:90vh;border-radius:24px;box-shadow:0 20px 50px #0003;padding:24px;display:flex;flex-direction:column;gap:18px;overflow:auto}.lesson-picker-modal>*{flex-shrink:0}.lesson-picker-header{display:flex;justify-content:space-between;align-items:center;gap:12px}.lesson-picker-header h3{margin:0 0 4px}.lesson-picker-header p{margin:0;color:#666}.lesson-picker-filters{background:linear-gradient(135deg,#667eea14,#764ba214);border:1px solid rgba(102,126,234,.2);border-radius:16px;padding:12px 16px;display:flex;flex-direction:column;gap:10px}.lesson-picker-filters__summary{display:flex;flex-wrap:wrap;gap:6px;align-items:baseline;color:#464b6f;font-size:.95em}.lesson-picker-filters__label{font-weight:600;color:#4b56a4}.lesson-picker-filters__text{color:#2f3450}.lesson-picker-filters__actions{display:flex;gap:10px;flex-wrap:wrap}.lesson-picker-filter-panel{border:1px solid rgba(102,126,234,.18);border-radius:18px;padding:14px;background:#f9f9ff}.lesson-picker-filter-panel .filter-panel{box-shadow:none;border:none;padding:0;background:transparent}.lesson-picker-filter-panel .filter-panel__header{margin-bottom:12px}.lesson-picker-filter-panel .filter-panel__grid{grid-template-columns:repeat(auto-fit,minmax(140px,1fr))}.lesson-picker-filter-panel .filter-panel__actions{justify-content:flex-end}.lesson-pill{border:2px solid rgba(102,126,234,.2);border-radius:16px;padding:14px 16px;background:#f8f9ff;display:flex;flex-direction:column;align-items:flex-start;gap:6px;min-height:90px;cursor:pointer;transition:all .3s ease;text-align:left}.lesson-pill.selected{border-color:#4c51bf;background:linear-gradient(135deg,#4676f440,#764ba259);box-shadow:inset 0 0 0 3px #fff6,0 12px 24px #667eea66;transform:translateY(-2px)}.lesson-pill__name{font-weight:600;color:#3949ab}.lesson-pill__count{font-size:.85em;color:#666}.lesson-picker-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.selected-summary{font-weight:600;color:#333}.lesson-picker-actions{display:flex;gap:10px}.progress-fill{height:100%;background:linear-gradient(90deg,#11998e,#38ef7d);transition:width .5s ease;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}.btn{padding:15px 30px;font-size:1.1em;border:none;border-radius:10px;cursor:pointer;transition:all .3s ease;font-weight:700;text-decoration:none;display:inline-block;text-align:center}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 4px 15px #667eea66}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #667eea99}.btn-success{background:linear-gradient(135deg,#11998e,#38ef7d);color:#fff;box-shadow:0 4px 15px #38ef7d66}.btn-success:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #38ef7d99}.btn-danger{background:linear-gradient(135deg,#eb3349,#f45c43);color:#fff;box-shadow:0 4px 15px #eb334966}.btn-danger:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #eb334999}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover:not(:disabled){background:#5a6268;transform:translateY(-2px)}.btn-light{background:#fff;color:#667eea;border:2px solid #667eea;padding:10px 20px;font-size:1em}.btn-light:hover:not(:disabled){background:#667eea1a;transform:translateY(-2px)}.btn-lg{padding:15px 40px;font-size:1.2em}.btn-sm{padding:8px 20px;font-size:.9em}.button-group{text-align:center;margin-top:30px;display:flex;gap:15px;justify-content:center}.tips-box{margin-top:40px;padding:20px;background:#f8f9fa;border-radius:var(--border-radius);text-align:center}.tips-box h3{color:var(--primary-color);margin-bottom:15px}.tips-box p{color:var(--text-light);line-height:1.8}.nav{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid #e0e0e0}.nav-title{font-size:1.5em;color:#667eea;font-weight:700}.lessons-container{margin:30px 0}.unit-section{margin-bottom:30px;background:#f8f9fa;border-radius:15px;padding:20px}.unit-title{font-size:1.5em;color:#667eea;font-weight:700;margin-bottom:15px;text-align:center}.unit-group{margin-bottom:40px}.unit-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--primary-color)}.unit-header h3{color:var(--primary-color);margin:0}.lessons-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:15px;margin-top:15px}.lesson-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:15px}.lesson-card{background:#fff;border:3px solid #e0e0e0;border-radius:10px;padding:20px 15px;text-align:center;cursor:pointer;transition:all .3s ease;position:relative}.lessons-filter-panel{margin-bottom:20px;background:#fff;border-radius:16px;box-shadow:0 12px 30px #667eea1f;padding:20px}.unit-tabs{display:flex;gap:12px;overflow-x:auto;padding-bottom:8px;margin-bottom:16px}.unit-tabs::-webkit-scrollbar{display:none}.unit-tab{flex:0 0 auto;padding:10px 18px;border-radius:999px;border:2px solid #667eea;background:#fff;color:#667eea;font-weight:600;cursor:pointer;transition:all .3s ease}.unit-tab.active{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;box-shadow:0 8px 20px #667eea4d}.quick-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:18px;pointer-events:none}.quick-actions .btn{pointer-events:auto}.quick-actions .btn,.lesson-picker-actions .btn{min-height:42px;align-items:center}.lesson-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin-bottom:30px;flex:1 1 auto;overflow-y:auto;padding-right:4px}.lesson-card:hover{border-color:#667eea;transform:translateY(-3px);box-shadow:0 4px 12px #667eea4d}.lesson-card.selected{background:linear-gradient(135deg,#667eea,#764ba2);border-color:#667eea;color:#fff}.lesson-number{font-size:2em;font-weight:700;margin-bottom:5px}.lesson-name{font-size:.9em;opacity:.8}.lesson-card.selected .lesson-name{opacity:1}.word-count{font-size:.8em;margin-top:5px;opacity:.7}.lesson-info{color:var(--text-light);font-size:.9em}.action-bar{display:flex;justify-content:space-between;align-items:center;margin:30px 0;padding:20px;background:#f8f9fa;border-radius:10px;flex-wrap:wrap;gap:15px}.selection-info{flex:1;min-width:200px}.selection-count{font-size:1.2em;color:#667eea;font-weight:700}.selection-words{font-size:.9em;color:#666;margin-top:5px}.action-buttons{display:flex;gap:10px;flex-wrap:wrap}.selected-count{font-size:1.2em;color:var(--text-color);font-weight:700}.game-area{min-height:400px;margin:30px 0;padding:20px;background:#f8f9fa;border-radius:15px}.options{display:grid;grid-template-columns:repeat(2,1fr);gap:15px;margin-top:20px}.option-btn{padding:20px;font-size:1.2em;background:#fff;border:3px solid #667eea;border-radius:10px;cursor:pointer;transition:all .3s ease;color:#333}.option-btn:hover{background:#667eea;color:#fff;transform:scale(1.05)}.option-btn.correct{background:#38ef7d;border-color:#38ef7d;color:#fff;animation:correctPulse .5s ease}.option-btn.wrong{background:#f45c43;border-color:#f45c43;color:#fff;animation:shake .5s ease}@keyframes correctPulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-10px)}75%{transform:translate(10px)}}table{width:100%;border-collapse:collapse;margin:20px 0}th,td{padding:12px;text-align:left;border-bottom:1px solid #ddd}th{background:#667eea;color:#fff;font-weight:700}tr:hover{background:#f5f5f5}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:5px;color:#333;font-weight:700}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px;border:2px solid #ddd;border-radius:5px;font-size:1em;font-family:inherit}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:#667eea}.filter-panel{background:#f8f9ff;border:1px solid rgba(102,126,234,.2);border-radius:15px;padding:20px 25px;margin-bottom:30px}.filter-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:20px}.filter-panel__header h3{margin-bottom:6px;color:#4b5bdc}.filter-panel__subtitle{color:#666;font-size:.95em}.filter-panel__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:10px}.filter-panel__actions{display:flex;justify-content:flex-end;gap:12px;margin-top:15px}.loading{text-align:center;padding:40px}.loading-spinner{border:4px solid #f3f3f3;border-top:4px solid #667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.success-message{background:#d4edda;border:1px solid #c3e6cb;color:#155724;padding:15px;border-radius:5px;margin:20px 0;text-align:center}.error-message{background:#f8d7da;border:1px solid #f5c6cb;color:#721c24;padding:15px;border-radius:5px;margin:20px 0;text-align:center}.badge{display:inline-block;padding:5px 10px;border-radius:12px;font-size:.8em;font-weight:700;margin:0 5px}.badge-gold{background:linear-gradient(135deg,#f7971e,#ffd200);color:#fff}.badge-silver{background:linear-gradient(135deg,#bdc3c7,#95a5a6);color:#fff}.badge-bronze{background:linear-gradient(135deg,#cd7f32,#d4a574);color:#fff}.completion-screen{text-align:center;padding:50px 20px}.completion-screen .emoji{font-size:5em;margin-bottom:20px}.completion-screen h2{color:var(--primary-color);margin-bottom:20px}.reward-text{font-size:1.2em;color:var(--text-light);margin-bottom:30px}@keyframes slideInRight{0%{transform:translate(100%);opacity:0}to{transform:translate(0);opacity:1}}@keyframes slideOutRight{0%{transform:translate(0);opacity:1}to{transform:translate(100%);opacity:0}}@media (max-width: 768px){body{padding:10px}.container{padding:15px;border-radius:10px}h1,.page-title{font-size:1.8em;margin-bottom:8px}.subtitle{font-size:1em;margin-bottom:20px}.game-grid{grid-template-columns:1fr;gap:15px;margin:20px 0}.game-card{padding:20px}.game-icon{font-size:3em;margin-bottom:10px}.game-title{font-size:1.2em;margin-bottom:8px}.game-desc{font-size:.85em}.word-card{padding:20px 15px;max-width:100%;margin:10px auto}.word-emoji{font-size:3em;margin-bottom:15px}.word-english{font-size:2em;margin-bottom:8px;word-break:break-word}.word-chinese{font-size:1.5em;margin-bottom:15px}.word-example{font-size:.95em;margin-bottom:5px;line-height:1.4}.word-example-cn{font-size:.9em;line-height:1.4}.progress-bar{height:25px;margin:15px 0}.progress-fill{font-size:.9em}.btn{padding:12px 20px;font-size:1em;width:100%;margin:5px 0}.options{grid-template-columns:1fr;gap:10px}.option-btn{padding:15px;font-size:1.1em}.score-board{flex-direction:row;flex-wrap:wrap;gap:10px;padding:15px}.score-item{flex:1;min-width:100px}.score-value{font-size:1.5em}.score-label{font-size:.85em}.nav{flex-direction:column;gap:10px;align-items:center;padding-bottom:15px;margin-bottom:20px}.nav-title{font-size:1.2em}.game-area{min-height:300px;padding:15px;margin:20px 0}table{font-size:.9em}th,td{padding:8px}.lessons-grid,.lesson-grid{grid-template-columns:repeat(4,1fr);gap:8px}.lesson-card{padding:12px 8px}.lessons-filter-panel{padding:14px}.lesson-number{font-size:1.3em}.lesson-name{font-size:.75em}.word-count{font-size:.7em}.unit-tabs{gap:8px;margin-bottom:12px}.unit-tab{padding:8px 14px;font-size:.9em}.quick-actions{gap:8px}.quick-actions .btn-light{flex:1 1 45%;padding:10px 12px}.lesson-picker-overlay{align-items:flex-start;padding:0}.lesson-picker-modal{width:100%;max-height:none;height:100vh;border-radius:0;padding:16px;overflow-y:auto}.lesson-list{display:flex;flex-direction:column;gap:12px;overflow:visible;padding-right:0}.lesson-pill{min-height:80px}.floating-lesson-button{right:16px;bottom:16px;top:auto;transform:none;padding:12px 16px}.action-bar{flex-direction:column;align-items:stretch;padding:15px;margin:20px 0}.selection-info{margin-bottom:10px;min-width:auto}.selection-count{font-size:1.1em}.selection-words{font-size:.85em}.action-buttons{width:100%;flex-direction:column}.action-buttons .btn{width:100%;margin:5px 0}}.app-header{width:100%;max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px 24px 0;box-sizing:border-box}.app-header-left{display:flex;align-items:center;gap:16px}.brand{font-size:1.4em;font-weight:700;color:#fff;text-decoration:none;text-shadow:0 4px 18px rgba(0,0,0,.25)}.nav-home{font-size:.95em;font-weight:600;color:#ffffffe6;text-decoration:none;padding:6px 14px;border-radius:999px;background:#ffffff2e;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:0 10px 24px #ffffff26;transition:background .2s ease,color .2s ease}.nav-home:hover{color:#fff;background:#ffffff47}.nav-link{position:relative;color:#ffffffd9;font-weight:600;text-decoration:none;padding:6px 16px;border-radius:999px;transition:color .2s ease,background .2s ease,box-shadow .2s ease}.nav-link:hover{color:#fff;background:#ffffff38}.nav-link.active{color:var(--primary-color);background:#fff;box-shadow:0 10px 20px #ffffff47}.auth-bar{display:flex;align-items:center;gap:12px;justify-content:flex-end}.user-chip{display:flex;align-items:center;gap:10px;padding:8px 16px;border-radius:999px;background:#ffffff29;box-shadow:0 6px 16px #00000026}.user-name{font-weight:600;color:#fff}.user-meta{display:inline-flex;align-items:center;gap:4px;padding:4px 8px;border-radius:999px;background:#ffffff2e;color:#fff;font-size:.85em}.nav-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.nav-actions .btn{min-width:120px;justify-content:center}@media (max-width: 900px){.app-header{flex-direction:column;align-items:stretch;gap:12px;padding:16px 16px 0}.app-header-left{justify-content:space-between}.nav-home{padding:6px 12px}.auth-bar{justify-content:space-between;gap:10px;flex-wrap:nowrap}.user-chip,.nav-actions{justify-content:center}}.auth-form{background:#fff;border:1px solid rgba(102,126,234,.15);border-radius:16px;padding:25px 30px;box-shadow:0 12px 30px #667eea14}.auth-form .form-group+.form-group{margin-top:18px}.auth-form .btn-primary{width:100%}.auth-form .btn-secondary{margin-top:12px}
