:root{--color-mint: #74EBD5;--color-blue: #9FACE6;--color-sky: #E0F7FA;--color-yellow: #FFEAA7;--color-orange: #FAB1A0;--color-pink: #FF8787;--color-purple: #D6A2E8;--color-white: #FFFFFF;--color-success: #2ECC71;--color-warning: #F1C40F;--color-error: #E74C3C;--color-info: #3498DB;--text-primary: #2C3E50;--text-secondary: #7F8C8D;--text-light: #95A5A6;--glass-bg: rgba(255, 255, 255, .65);--glass-border: rgba(255, 255, 255, .4);--glass-shadow: 0 8px 32px 0 rgba(143, 153, 219, .12);--font-heading: "Outfit", "Quicksand", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition-fast: all .2s cubic-bezier(.4, 0, .2, 1);--transition-normal: all .3s cubic-bezier(.4, 0, .2, 1);--transition-spring: all .5s cubic-bezier(.175, .885, .32, 1.275)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);color:var(--text-primary);background:linear-gradient(135deg,#fff9e6,#e0f2fe,#f3e8ff);background-attachment:fixed;min-height:100vh;overflow-x:hidden;line-height:1.6}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;color:var(--text-primary)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#fff3;border-radius:10px}::-webkit-scrollbar-thumb{background:#9face666;border-radius:10px}::-webkit-scrollbar-thumb:hover{background:#9face699}.app-container{display:flex;min-height:100vh}.sidebar{width:280px;background:#ffffff73;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid var(--glass-border);display:flex;flex-direction:column;padding:2.5rem 1.5rem;z-index:10;flex-shrink:0}.brand-section{display:flex;align-items:center;gap:.8rem;margin-bottom:3rem}.brand-logo{font-size:2.5rem;animation:float-logo 3s ease-in-out infinite}.brand-name{font-size:1.4rem;background:linear-gradient(135deg,#6c5ce7,#0984e3);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-.5px}.nav-links{list-style:none;display:flex;flex-direction:column;gap:.8rem;flex-grow:1}.nav-item{display:flex;align-items:center;gap:1rem;padding:1rem 1.2rem;border-radius:18px;color:var(--text-primary);text-decoration:none;font-family:var(--font-heading);font-weight:600;font-size:1.05rem;cursor:pointer;border:1px solid transparent;transition:var(--transition-spring);background:none;width:100%;text-align:left;outline:none}.nav-item:hover{background:#ffffffb3;transform:translateY(-2px);box-shadow:0 4px 15px #8f99db1a;color:#6c5ce7}.nav-item.active{background:linear-gradient(135deg,#9face6,#74ebd5);color:#fff;border:1px solid rgba(255,255,255,.3);box-shadow:0 8px 20px #74ebd54d}.nav-item svg{width:20px;height:20px}.sub-nav-item-pc{font-weight:500!important}.sub-nav-item-pc.active{background:#6c5ce714!important;color:var(--color-purple)!important;border:1px solid rgba(108,92,231,.15)!important;box-shadow:none!important}.sidebar-user{margin-top:auto;background:#fff9;border:1px solid var(--glass-border);border-radius:20px;padding:1rem;display:flex;align-items:center;gap:.8rem;box-shadow:var(--glass-shadow)}.user-avatar{width:48px;height:48px;border-radius:50%;background:linear-gradient(135deg,var(--color-yellow),var(--color-orange));display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:0 4px 10px #fab1a066}.user-info .user-name{font-family:var(--font-heading);font-weight:700;font-size:.95rem}.user-info .user-age{font-size:.8rem;color:var(--text-secondary)}.main-content{flex-grow:1;padding:2.5rem 3rem;overflow-y:auto;display:flex;flex-direction:column;gap:2rem;max-width:1400px;margin:0 auto;width:100%}.view-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:.5rem}.view-title{font-size:2rem;background:linear-gradient(135deg,var(--text-primary),#485460);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.view-subtitle{font-size:.95rem;color:var(--text-secondary)}.glass-card{background:var(--glass-bg);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--glass-border);border-radius:28px;padding:2rem;box-shadow:var(--glass-shadow);transition:var(--transition-spring)}.glass-card.interactive:hover{transform:translateY(-4px);box-shadow:0 12px 40px #8f99db2e;border-color:#fff9}.glass-input{width:100%;padding:.8rem 1.2rem;border-radius:16px;border:1px solid var(--glass-border);background:#ffffff80;font-family:var(--font-body);font-size:.95rem;color:var(--text-primary);outline:none;transition:var(--transition-fast)}.glass-input:focus{background:var(--color-white);border-color:var(--color-blue);box-shadow:0 0 0 4px #9face626}.btn-cute{font-family:var(--font-heading);font-weight:700;font-size:1rem;padding:.8rem 1.8rem;border-radius:20px;border:1px solid rgba(255,255,255,.3);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:.6rem;transition:var(--transition-spring);box-shadow:0 4px 15px #0000000d}.btn-cute:active{transform:scale(.95)}.btn-primary{background:linear-gradient(135deg,var(--color-blue) 0%,var(--color-mint) 100%);color:#fff;box-shadow:0 6px 20px #74ebd540}.btn-primary:hover{box-shadow:0 8px 25px #74ebd566;transform:translateY(-2px)}.btn-secondary{background:#fffc;color:var(--text-primary)}.btn-secondary:hover{background:var(--color-white);transform:translateY(-2px);box-shadow:0 6px 20px #0000000d}.btn-accent{background:linear-gradient(135deg,var(--color-pink) 0%,var(--color-orange) 100%);color:#fff;box-shadow:0 6px 20px #ff878740}.btn-accent:hover{box-shadow:0 8px 25px #ff878766;transform:translateY(-2px)}.badge{display:inline-flex;align-items:center;padding:.35rem .8rem;border-radius:12px;font-size:.8rem;font-weight:700;font-family:var(--font-heading)}.badge-mint{background-color:#e2fbf4;color:#10ac84}.badge-blue{background-color:#eef2ff;color:#4f46e5}.badge-pink{background-color:#ffeaef;color:#ff6b81}.badge-yellow{background-color:#fff9e6;color:#d5a600}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:1.8rem}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}@media (max-width: 1024px){.grid-2,.grid-3{grid-template-columns:1fr}.app-container{flex-direction:column}.sidebar{width:100%;padding:1.5rem;border-right:none;border-bottom:1px solid var(--glass-border)}.brand-section{margin-bottom:1.5rem}.nav-links{flex-direction:row;overflow-x:auto;padding-bottom:.5rem}.sidebar-divider{display:none!important}.nav-item{flex-shrink:0;padding:.6rem 1rem;border-radius:12px}.sidebar-user{display:none}.main-content{padding:1.5rem}.sidebar .parents-only-nav-item{display:none!important}.sidebar .nav-item.active{color:var(--color-purple)!important;background:#6c5ce714!important;box-shadow:none!important;border:1px solid rgba(108,92,231,.15)!important}.parents-sub-navbar{display:flex!important;align-items:center;justify-content:space-between;background:#ffffffbf!important;backdrop-filter:blur(20px)!important;-webkit-backdrop-filter:blur(20px)!important;padding:.4rem .6rem!important;border-radius:12px!important;border:1px solid rgba(108,92,231,.12)!important;margin:.4rem .4rem 1rem!important;box-shadow:0 4px 20px #6c5ce70a!important}.sub-navbar-links{display:flex;gap:.4rem}.sub-nav-item{display:inline-flex;align-items:center;gap:.3rem;padding:.35rem .6rem;font-size:.78rem;font-weight:600;color:var(--text-secondary);background:none;border:1px solid transparent;border-radius:8px;transition:all .2s ease;cursor:pointer;white-space:nowrap!important;flex-shrink:0!important}.sub-nav-item svg{flex-shrink:0!important}.sub-nav-item.active{color:var(--color-purple);background:#6c5ce714;border-color:#6c5ce726}.sub-nav-lock-btn{display:inline-flex;align-items:center;gap:.2rem;padding:.35rem .6rem;font-size:.75rem;font-weight:600;color:#ff4d4d;background:#ff6b6b14;border:1px solid rgba(255,107,107,.15);border-radius:8px;cursor:pointer;transition:all .2s ease;white-space:nowrap!important;flex-shrink:0!important}.sub-nav-lock-btn svg{flex-shrink:0!important}.sub-nav-lock-btn:hover{background:#ff4d4d;color:#fff}@media (max-width: 375px){.parents-sub-navbar{padding:.3rem .45rem!important;margin:.3rem .3rem .8rem!important}.sub-navbar-links{gap:.25rem}.sub-nav-item{padding:.3rem .45rem!important;font-size:.72rem!important;gap:.2rem!important}.sub-nav-lock-btn{padding:.3rem .45rem!important;font-size:.72rem!important;gap:.15rem!important}}}.parents-sub-navbar{display:none}.stat-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1.5rem}.stat-card{display:flex;align-items:center;gap:1.2rem}.stat-icon{width:56px;height:56px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:1.8rem;box-shadow:0 6px 15px #0000000d}.stat-info .stat-value{font-family:var(--font-heading);font-size:1.8rem;font-weight:800;line-height:1.2}.stat-info .stat-label{font-size:.85rem;color:var(--text-secondary)}.dashboard-layout{display:grid;grid-template-columns:3fr 2fr;gap:1.8rem}@media (max-width: 900px){.dashboard-layout{grid-template-columns:1fr}}.review-list{display:flex;flex-direction:column;gap:1rem}.review-item{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.2rem;background:#fff6;border:1px solid var(--glass-border);border-radius:18px;transition:var(--transition-fast)}.review-item:hover{background:#fffc;transform:translate(4px)}.review-word-info{display:flex;align-items:center;gap:1rem}.review-word{font-family:var(--font-heading);font-weight:700;font-size:1.15rem}.review-time{font-size:.8rem;color:var(--color-pink);font-weight:600}.profile-editor{display:flex;flex-direction:column;gap:1.5rem}.form-group{display:flex;flex-direction:column;gap:.5rem}.form-group label{font-family:var(--font-heading);font-weight:600;font-size:.95rem;color:var(--text-primary)}.tags-container{display:flex;flex-wrap:wrap;gap:.6rem;padding:1rem;border-radius:18px;background:#ffffff4d;border:1px solid var(--glass-border);min-height:80px}.tag-item{display:flex;align-items:center;gap:.4rem;padding:.4rem .8rem;background:var(--color-white);border:1px solid var(--glass-border);border-radius:12px;font-size:.85rem;font-weight:500;transition:var(--transition-fast)}.tag-item:hover{border-color:var(--color-pink);color:var(--color-pink)}.tag-delete-btn{background:none;border:none;cursor:pointer;color:var(--text-light);display:flex;align-items:center}.tag-delete-btn:hover{color:var(--color-error)}.tag-input-row{display:flex;gap:.8rem}.generator-container{display:flex;flex-direction:column;gap:1.5rem}.api-settings{border:1px dashed var(--color-blue);background:#9face60d}.prompt-preview-box{background:#0000000d;border-radius:16px;padding:1.2rem;font-family:monospace;font-size:.8rem;max-height:250px;overflow-y:auto;white-space:pre-wrap;color:#2c3e50;border:1px solid rgba(0,0,0,.1)}.magic-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:4rem 2rem;gap:1.5rem}.magic-wand{font-size:4rem;animation:wave-wand 1.5s ease-in-out infinite}.magic-sparkles{display:flex;gap:.5rem}.sparkle{width:8px;height:8px;border-radius:50%;background-color:var(--color-purple);animation:blink-sparkle 1s infinite alternate}.sparkle:nth-child(2){background-color:var(--color-yellow);animation-delay:.3s}.sparkle:nth-child(3){background-color:var(--color-mint);animation-delay:.6s}.classroom-layout{display:flex;flex-direction:column;gap:1.5rem;align-items:center}.progress-map{display:flex;justify-content:space-between;width:100%;max-width:800px;position:relative;margin-bottom:1.5rem;padding:0 1rem}.progress-map:before{content:"";position:absolute;top:24px;left:0;right:0;height:4px;background:#9face633;z-index:1}.progress-line-fill{position:absolute;top:24px;left:0;height:4px;background:linear-gradient(90deg,var(--color-blue),var(--color-mint));z-index:1;transition:var(--transition-normal)}.step-node{width:50px;height:50px;border-radius:50%;background:var(--color-white);border:3px solid rgba(159,172,230,.3);display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-weight:800;font-size:1.1rem;z-index:2;cursor:pointer;transition:var(--transition-spring);box-shadow:0 4px 10px #0000000d}.step-node:hover{transform:scale(1.15)}.step-node.active{border-color:var(--color-blue);background:var(--color-blue);color:#fff;box-shadow:0 0 0 6px #9face640;transform:scale(1.1)}.step-node.completed{border-color:var(--color-mint);background:var(--color-mint);color:#fff}.step-label{position:absolute;top:55px;font-size:.75rem;font-weight:700;color:var(--text-secondary);white-space:nowrap;transform:translate(-5%)}.step-node.active .step-label{color:var(--color-blue)}.classroom-board{width:100%;max-width:850px;min-height:480px;display:flex;flex-direction:column;position:relative;overflow:hidden}.classroom-step-content{flex-grow:1;display:flex;flex-direction:column;gap:1.5rem}.step-header-tag{align-self:flex-start;margin-bottom:.5rem}.word-cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:1rem}.word-card{background:#ffffff80;border:1px solid var(--glass-border);border-radius:22px;padding:1.5rem;display:flex;flex-direction:column;align-items:center;gap:.8rem;text-align:center;cursor:pointer;transition:var(--transition-spring)}.word-card:hover{transform:translateY(-5px);background:var(--color-white);border-color:var(--color-blue);box-shadow:0 10px 25px #9face626}.word-card.selected{background:linear-gradient(135deg,#e0f7fa99,#eef2ff99);border-color:var(--color-blue);box-shadow:0 10px 25px #9face626}.word-english{font-family:var(--font-heading);font-size:1.8rem;font-weight:800;color:#3b82f6;text-shadow:0 2px 4px rgba(0,0,0,.02)}.word-pronounce{font-size:.9rem;background:#ff87871f;color:#ff5a79;padding:.25rem .6rem;border-radius:8px;font-weight:600}.word-chinese{font-size:1rem;font-weight:700;color:var(--text-primary)}.word-action{font-size:.82rem;color:var(--text-secondary);background:#00000008;padding:.6rem;border-radius:12px;width:100%}.practice-hub{display:flex;flex-direction:column;align-items:center;gap:1.2rem;margin-top:1.5rem;padding:1.5rem;background:#fff9;border-radius:24px;border:1px solid var(--glass-border);width:100%}.practice-title{font-family:var(--font-heading);font-size:1.2rem;font-weight:700;color:var(--text-secondary);display:flex;align-items:center;gap:.5rem}.voice-panel{display:flex;align-items:center;gap:1.5rem;margin-top:.5rem}.audio-btn{width:60px;height:60px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--color-blue),var(--color-purple));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 6px 15px #9face64d;transition:var(--transition-spring);flex-shrink:0}.audio-btn:hover{transform:scale(1.1) rotate(5deg)}.record-btn{width:76px;height:76px;border-radius:50%;border:none;background:linear-gradient(135deg,var(--color-pink),var(--color-orange));color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 20px #ff878766;position:relative;transition:var(--transition-spring);flex-shrink:0}.record-btn:hover{transform:scale(1.1)}.record-btn.recording{background:#ff3b30;animation:pulse-red 1.2s infinite}.record-btn.recording:before{content:"";position:absolute;top:-8px;left:-8px;right:-8px;bottom:-8px;border-radius:50%;border:2px solid #FF3B30;animation:ripple-out 1.2s infinite}.speech-transcript{font-size:.95rem;color:var(--text-secondary);margin-top:.5rem;min-height:24px;text-align:center;font-style:italic}.score-badge-overlay{display:flex;flex-direction:column;align-items:center;gap:.3rem;animation:pop-up .5s cubic-bezier(.175,.885,.32,1.275)}.score-number{font-family:var(--font-heading);font-size:2.8rem;font-weight:900;color:var(--color-success);text-shadow:0 4px 10px rgba(46,204,113,.2)}.score-star-row{display:flex;gap:.2rem;color:var(--color-warning);font-size:1.5rem}.classroom-footer{display:flex;justify-content:space-between;width:100%;max-width:850px;margin-top:1.5rem}.dialogue-box{display:flex;flex-direction:column;gap:1.2rem;margin-top:1rem}.bubble{max-width:75%;padding:1.2rem 1.6rem;border-radius:24px;position:relative;box-shadow:0 4px 15px #00000008}.bubble-teacher{background:#e8f0fe;border-top-left-radius:4px;align-self:flex-start;border:1px solid rgba(66,133,244,.15)}.bubble-student{background:#e6fffa;border-top-right-radius:4px;align-self:flex-end;border:1px solid rgba(46,204,113,.15);text-align:right}.bubble-speaker{font-family:var(--font-heading);font-size:.8rem;font-weight:700;text-transform:uppercase;margin-bottom:.3rem}.bubble-teacher .bubble-speaker{color:#1a73e8}.bubble-student .bubble-speaker{color:#0f9d58}.bubble-text{font-size:1.15rem;font-weight:600}.bubble-action{font-size:.8rem;color:var(--text-secondary);font-style:italic;margin-top:.3rem}@keyframes float-logo{0%,to{transform:translateY(0) rotate(0)}50%{transform:translateY(-8px) rotate(3deg)}}@keyframes wave-wand{0%,to{transform:rotate(0) translateY(0)}50%{transform:rotate(15deg) translateY(-5px)}}@keyframes blink-sparkle{0%{transform:scale(.6);opacity:.4}to{transform:scale(1.2);opacity:1}}@keyframes pulse-red{0%,to{box-shadow:0 8px 20px #ff878766}50%{box-shadow:0 8px 30px #ff3b30b3}}@keyframes ripple-out{0%{transform:scale(1);opacity:1}to{transform:scale(1.3);opacity:0}}@keyframes pop-up{0%{transform:scale(.5);opacity:0}80%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.particle-star{position:absolute;pointer-events:none;font-size:1.5rem;z-index:99;animation:scatter-star 1s ease-out forwards}@keyframes scatter-star{0%{transform:translate(0) scale(1) rotate(0);opacity:1}to{transform:translate(var(--dx),var(--dy)) scale(0) rotate(360deg);opacity:0}}.self-study-layout{display:flex;flex-direction:column;align-items:center;gap:1.5rem}.category-filter{display:flex;justify-content:center;flex-wrap:wrap;gap:.8rem;margin-bottom:.5rem;width:100%}.flashcard-deck{position:relative;width:360px;height:480px;display:flex;justify-content:center;align-items:center;margin:1rem 0}.flashcard-wrapper{width:100%;height:100%;perspective:1200px;z-index:5}.flashcard-body{width:100%;height:100%;position:relative;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.175,.885,.32,1.275);cursor:pointer}.flashcard-body.flipped{transform:rotateY(180deg)}.flashcard-front,.flashcard-back{position:absolute;width:100%;height:100%;backface-visibility:hidden;border-radius:28px;padding:2.2rem;display:flex;flex-direction:column;align-items:center;justify-content:space-between;box-shadow:0 15px 35px #8f99db26;border:1px solid var(--glass-border);text-align:center}.flashcard-front{background:linear-gradient(135deg,#e0f7fad9,#ffffffd9);transform:rotateY(0);z-index:2}.flashcard-back{background:linear-gradient(135deg,#ffebebd9,#ffffffd9);transform:rotateY(180deg);z-index:1}.flashcard-deck:before,.flashcard-deck:after{content:"";position:absolute;border-radius:28px;background:#fff6;border:1px solid rgba(255,255,255,.2);box-shadow:0 8px 20px #00000008;transition:var(--transition-spring)}.flashcard-deck:before{width:95%;height:95%;bottom:-10px;z-index:3;transform:scale(.98) rotate(-2deg)}.flashcard-deck:after{width:90%;height:90%;bottom:-20px;z-index:2;transform:scale(.96) rotate(3deg)}.slide-left{transform:translate(-180%) rotate(-15deg) scale(.8)!important;opacity:0;pointer-events:none;transition:all .5s cubic-bezier(.25,1,.5,1)}.slide-right{transform:translate(180%) rotate(15deg) scale(.8)!important;opacity:0;pointer-events:none;transition:all .5s cubic-bezier(.25,1,.5,1)}.card-enter{animation:card-enter-anim .5s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes card-enter-anim{0%{transform:scale(.8) translateY(20px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.flashcard-emoji{font-size:5rem;margin:1rem 0;animation:float-logo 3s ease-in-out infinite}.flashcard-word{font-family:var(--font-heading);font-size:2.5rem;font-weight:800;color:#3b82f6;letter-spacing:-.5px}.flashcard-subtitle{font-size:.9rem;color:var(--text-secondary);background:#ff87871a;padding:.3rem .8rem;border-radius:12px;font-weight:600;display:inline-block;margin-top:.3rem}.flashcard-chinese{font-size:1.6rem;font-weight:800;color:var(--text-primary)}.flashcard-action-tip{font-size:.88rem;color:#e28743;background:#e2874314;padding:.8rem;border-radius:16px;width:100%;border:1px dashed rgba(226,135,67,.25)}.flip-btn-mini{background:#0000000a;border:1px solid rgba(0,0,0,.08);padding:.4rem .8rem;border-radius:10px;font-size:.78rem;font-weight:600;color:var(--text-secondary);cursor:pointer;transition:var(--transition-fast);margin-top:.8rem}.flip-btn-mini:hover{background:#00000014;color:var(--text-primary)}.animation-stage{position:relative;width:100%;height:280px;border-radius:24px;overflow:hidden;border:1px solid var(--glass-border);box-shadow:inset 0 4px 15px #00000005,var(--glass-shadow);transition:all .6s cubic-bezier(.25,1,.5,1)}.stage-forest{background:linear-gradient(to bottom,#e0f2fe,#bae6fd 55%,#a7f3d0 55%,#6ee7b7)}.stage-sky{background:linear-gradient(to bottom,#93c5fd,#c7d2fe)}.stage-ocean{background:linear-gradient(to bottom,#38bdf8,#0ea5e9 40%,#0369a1)}.stage-garden{background:linear-gradient(to bottom,#fef3c7,#fde68a 50%,#fca5a5 50%,#f87171)}.cloud-svg{position:absolute;font-size:2.2rem;color:#ffffffbf;animation:cloud-float 25s linear infinite;pointer-events:none}@keyframes cloud-float{0%{transform:translate(-120px) translateY(0)}50%{transform:translate(300px) translateY(10px)}to{transform:translate(800px) translateY(0)}}.wave-deco{position:absolute;bottom:0;left:0;right:0;height:40px;background:#ffffff26;clip-path:ellipse(60% 40% at 50% 100%);animation:wave-sway 4s ease-in-out infinite alternate}@keyframes wave-sway{0%{transform:scaleY(.9) translate(-10px)}to{transform:scaleY(1.1) translate(10px)}}.bubble-particle-node{position:absolute;border-radius:50%;background:#ffffff59;border:1px solid rgba(255,255,255,.5);animation:bubble-rise 2.5s ease-in forwards;pointer-events:none}@keyframes bubble-rise{0%{transform:translateY(120px) scale(.6);opacity:0}10%{opacity:.8}90%{opacity:.8}to{transform:translateY(-120px) translate(var(--rx, 20px)) scale(1.1);opacity:0}}.actor-node{position:absolute;font-size:3.5rem;cursor:pointer;-webkit-user-select:none;user-select:none;z-index:10;display:inline-block;transform-origin:bottom center;transition:transform .2s cubic-bezier(.175,.885,.32,1.275)}.actor-node:hover{transform:scale(1.15)!important}.act-walk{animation:walk-move 6s ease-in-out infinite alternate}@keyframes walk-move{0%{left:var(--start-x, 20%);transform:rotate(0) scaleY(1)}25%{transform:rotate(4deg) scaleY(.95)}50%{transform:rotate(-4deg) scaleY(1)}75%{transform:rotate(4deg) scaleY(.95)}to{left:calc(var(--start-x, 20%) + 25%);transform:rotate(0) scaleY(1)}}.act-fly{animation:fly-move 7s ease-in-out infinite alternate}@keyframes fly-move{0%{left:var(--start-x, 60%);top:var(--start-y, 20%);transform:scaleX(1) translateY(0) rotate(-5deg)}50%{transform:scaleX(-1) translateY(-15px) rotate(5deg)}to{left:calc(var(--start-x, 60%) - 20%);top:calc(var(--start-y, 20%) + 15px);transform:scaleX(1) translateY(0) rotate(-5deg)}}.act-swim{animation:swim-move 5s ease-in-out infinite alternate}@keyframes swim-move{0%{left:var(--start-x, 40%);transform:rotate(-5deg) scaleX(1) translateY(0)}50%{transform:rotate(5deg) scaleX(1) translateY(-10px)}to{left:calc(var(--start-x, 40%) + 20%);transform:rotate(-5deg) scaleX(-1) translateY(0)}}.act-hop{animation:hop-move 3.5s ease-in-out infinite}@keyframes hop-move{0%,to{transform:translateY(0) scale(1)}10%{transform:translateY(3px) scale(1.1,.85)}30%{transform:translateY(-45px) scale(.9,1.15)}50%{transform:translateY(0) scale(1.05,.9)}60%{transform:translateY(0) scale(1)}}.act-float{animation:float-move 4s ease-in-out infinite alternate}@keyframes float-move{0%{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-12px) rotate(3deg)}to{transform:translateY(0) rotate(-3deg)}}.click-bounce-anim{animation:trigger-bounce .5s cubic-bezier(.175,.885,.32,1.275) forwards!important}@keyframes trigger-bounce{0%{transform:translateY(0) scale(1)}30%{transform:translateY(-25px) scale(.85,1.15)}60%{transform:translateY(3px) scale(1.15,.85)}to{transform:translateY(0) scale(1)}}.click-spin-anim{animation:trigger-spin .6s cubic-bezier(.175,.885,.32,1.275) forwards!important}@keyframes trigger-spin{0%{transform:rotate(0) scale(1)}50%{transform:rotate(180deg) scale(1.2)}to{transform:rotate(360deg) scale(1)}}.click-wiggle-anim{animation:trigger-wiggle .5s ease-in-out forwards!important}@keyframes trigger-wiggle{0%,to{transform:rotate(0)}20%,60%{transform:rotate(-15deg) scale(1.05)}40%,80%{transform:rotate(15deg) scale(1.05)}}.click-grow-anim{animation:trigger-grow .5s cubic-bezier(.175,.885,.32,1.275) forwards!important}@keyframes trigger-grow{0%{transform:scale(1)}50%{transform:scale(1.35) rotate(-5deg)}to{transform:scale(1)}}.activation-overlay{position:fixed;top:0;left:0;width:100vw;height:100vh;background:#fff6;backdrop-filter:blur(25px);-webkit-backdrop-filter:blur(25px);z-index:999;display:flex;justify-content:center;align-items:center}.activation-modal{box-shadow:0 20px 50px #6c5ce726!important;border:1px solid rgba(255,255,255,.6)!important;padding:2.5rem}.activation-header{text-align:center;margin-bottom:1.5rem}.activation-logo{font-size:3.5rem;display:block;animation:float-logo 3s ease-in-out infinite}.activation-title-text{font-family:var(--font-heading);font-size:1.8rem;margin-top:.5rem;background:linear-gradient(135deg,#6c5ce7,#0984e3);background-clip:text;-webkit-background-clip:text;-webkit-text-fill-color:transparent}.activation-subtitle-text{font-size:.88rem;color:var(--text-secondary);margin-top:.2rem}.activation-form{display:flex;flex-direction:column;gap:1rem}.activation-submit-btn{width:100%;margin-top:.5rem;padding:.9rem}.activation-footer{display:flex;justify-content:center;align-items:center;margin-top:.8rem;padding:0 .2rem}.kids-card{transition:transform .4s cubic-bezier(.175,.885,.32,1.275),box-shadow .4s ease!important}.kids-card:hover{transform:translateY(-8px) scale(1.02)!important;box-shadow:0 20px 45px #6c5ce740!important;border-color:#6c5ce780!important}.kids-mode-stage{padding:1.5rem 0}.pop-up-anim{animation:pop-up-effect .5s cubic-bezier(.175,.885,.32,1.275) forwards}@keyframes pop-up-effect{0%{opacity:0;transform:scale(.9) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}.admin-console-layout table th{font-family:var(--font-heading);font-weight:700;color:var(--text-primary);border-bottom:2px solid var(--glass-border)}.admin-console-layout table td{border-bottom:1px solid rgba(0,0,0,.05)}.admin-console-layout table tr:hover{background:#fff6}.kids-card-continue{background:linear-gradient(135deg,#fff3e0b3,#ffe0b280)!important;transition:transform .4s cubic-bezier(.175,.885,.32,1.275),box-shadow .4s ease!important}.kids-card-continue:hover{transform:translateY(-8px) scale(1.02)!important;box-shadow:0 20px 45px #ff8c0040!important;border-color:#ff8c0099!important}.balloon-floating{animation:balloonFloat 4s ease-in-out infinite}@keyframes balloonFloat{0%,to{transform:translateY(0) rotate(-3deg)}50%{transform:translateY(-15px) rotate(3deg)}}.btn-balloon{background:linear-gradient(135deg,#ff9f43,#ff6b6b)!important;color:#fff!important;box-shadow:0 8px 20px #ff6b6b4d!important;animation:pulse-balloon 2s infinite ease-in-out}@keyframes pulse-balloon{0%,to{transform:scale(1)}50%{transform:scale(1.06)}}.kids-card-completed{background:#ebebeb8c!important;border:3px dashed rgba(0,0,0,.1)!important;cursor:not-allowed!important;transition:all .3s ease!important}.kids-card-completed:hover{transform:none!important;box-shadow:none!important;border-color:#0000001f!important}.kids-welcome-title{font-size:2.1rem;font-family:var(--font-heading);text-align:center;margin:1.5rem 0 2rem;background:linear-gradient(135deg,var(--color-pink),var(--color-purple));-webkit-background-clip:text;-webkit-text-fill-color:transparent;animation:float-logo 3.5s ease-in-out infinite}.kids-playland-container{max-width:1050px;margin:0 auto;width:100%;display:flex;flex-direction:column;gap:2.5rem}.kids-main-task-wrapper{width:100%}.kids-card-main-task{display:flex;flex-direction:row;align-items:center;justify-content:space-between;text-align:left;padding:2.5rem 3.5rem!important;gap:3rem!important;width:100%;border-radius:32px!important}.kids-card-main-task.kids-card-continue{border:3px solid rgba(255,165,0,.4)!important;box-shadow:0 16px 40px #ffa5001f!important}.kids-main-task-emoji{font-size:5.5rem;flex-shrink:0;line-height:1;display:block}.kids-main-task-content{flex-grow:1;display:flex;flex-direction:column;align-items:flex-start;gap:.5rem}.kids-main-task-title{font-size:1.8rem!important;font-family:var(--font-heading)!important;color:coral!important;margin:0!important}.kids-main-task-badge{font-size:.82rem;background:#ffa5001a;color:#ff7f00;padding:.3rem .8rem;border-radius:12px;font-weight:700;width:fit-content}.kids-main-task-desc{font-size:.95rem!important;color:var(--text-secondary)!important;margin:.2rem 0 0!important;line-height:1.5!important}.kids-main-task-btn{flex-shrink:0;margin-top:0!important}.kids-sub-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;width:100%}.kids-sub-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:3rem 2rem!important;gap:.8rem!important;height:100%;border-radius:32px!important}.kids-sub-card-emoji{font-size:5.5rem;display:block;margin-bottom:.5rem}.kids-sub-card-title{font-size:1.6rem!important;font-family:var(--font-heading)!important;margin:0!important}.kids-sub-card:nth-child(1) .kids-sub-card-title{color:#ec4899}.kids-sub-card:nth-child(2) .kids-sub-card-title{color:#6c5ce7}.kids-sub-card-desc{font-size:.9rem!important;color:var(--text-secondary)!important;margin:.2rem 0 0!important;line-height:1.5!important;flex-grow:1}.kids-sub-card-btn{margin-top:1.5rem!important}.mobile-only-user{display:none}@media (max-width: 768px){.app-container{flex-direction:column!important;height:100vh!important;overflow:hidden!important}.sidebar{position:fixed!important;bottom:0!important;left:0!important;width:100vw!important;height:70px!important;flex-direction:row!important;padding:.2rem 0!important;justify-content:space-around!important;align-items:center!important;border-right:none!important;border-top:1px solid var(--glass-border)!important;background:#fffffff2!important;backdrop-filter:blur(25px)!important;-webkit-backdrop-filter:blur(25px)!important;box-shadow:0 -8px 30px #00000014!important;z-index:1000!important;border-bottom:none!important}.sidebar .brand-section,.sidebar-divider{display:none!important}.sidebar nav{width:100%!important}.sidebar .nav-links{display:flex!important;flex-direction:row!important;justify-content:space-around!important;width:100%!important;margin:0!important;padding:0!important;list-style:none!important;overflow-x:visible!important}.sidebar .nav-item{display:flex!important;flex-direction:column!important;align-items:center!important;justify-content:center!important;gap:3px!important;font-size:.68rem!important;padding:.4rem .2rem!important;width:70px!important;background:none!important;border:none!important;box-shadow:none!important;color:var(--text-secondary)!important;border-radius:16px!important;flex-shrink:0!important}.sidebar .nav-item.active{color:var(--color-purple)!important;background:#6c5ce714!important}.sidebar .nav-item svg{width:20px!important;height:20px!important;margin-right:0!important}.pc-only-user{display:none!important}.mobile-only-user{display:flex!important;position:fixed!important;top:12px!important;right:12px!important;z-index:1010!important;padding:2px!important;background:#ffffffd9!important;backdrop-filter:blur(10px)!important;-webkit-backdrop-filter:blur(10px)!important;border-radius:50%!important;box-shadow:0 4px 15px #6c5ce726!important;margin-top:0!important;width:44px!important;height:44px!important;justify-content:center!important;align-items:center!important;border:1px solid var(--glass-border)!important;cursor:pointer!important;transition:transform .2s ease!important}.mobile-only-user:hover{transform:scale(1.05)!important}.mobile-only-user .user-avatar{width:36px!important;height:36px!important;font-size:1.5rem!important;display:flex!important;align-items:center!important;justify-content:center!important;margin:0!important;line-height:1!important}.main-content{padding:1rem 1rem 80px!important;overflow-y:auto!important;flex-grow:1!important;gap:1.2rem!important}.view-header{padding-right:50px!important;flex-direction:column!important;align-items:flex-start!important;gap:.5rem!important;margin-bottom:0!important}.view-title{font-size:1.4rem!important}.view-subtitle{font-size:.82rem!important}.kids-mode-stage{padding:.5rem 0!important}.kids-profile-select-card{width:140px!important;padding:1.5rem .5rem!important;border-radius:20px!important}.kids-profile-select-card div[style*="font-size: 4.2rem"]{font-size:3rem!important}.kids-profile-select-card h4{font-size:1.1rem!important}.kids-playland-container{gap:1.2rem!important}.kids-card-main-task{flex-direction:row!important;padding:1rem .8rem!important;gap:.8rem!important;border-radius:20px!important}.kids-main-task-emoji{font-size:2.8rem!important}.kids-main-task-content{gap:.15rem!important}.kids-main-task-title{font-size:1.15rem!important}.kids-main-task-badge{font-size:.68rem!important;padding:.15rem .4rem!important;border-radius:8px!important}.kids-main-task-desc{font-size:.72rem!important;line-height:1.3!important;margin-top:.1rem!important}.kids-main-task-btn{padding:.35rem .8rem!important;font-size:.76rem!important;margin-left:auto!important}.kids-sub-grid{grid-template-columns:1fr 1fr!important;gap:.75rem!important}.kids-sub-card{padding:1.2rem .6rem!important;gap:.4rem!important;border-radius:20px!important}.kids-sub-card-emoji{font-size:2.5rem!important;margin-bottom:.2rem!important}.kids-sub-card-title{font-size:1.1rem!important}.kids-sub-card-desc{display:none!important}.kids-sub-card-btn{margin-top:.5rem!important;padding:.35rem .8rem!important;font-size:.75rem!important}.kids-welcome-title{font-size:1.35rem!important;margin:.5rem 0 1rem!important}.stat-container{grid-template-columns:1fr!important;gap:1rem!important}.stat-card{padding:1rem!important}.flashcard-deck{width:290px!important;height:440px!important;margin:.5rem 0!important}.flashcard-deck:before,.flashcard-deck:after{border-radius:20px!important}.flashcard-front,.flashcard-back{padding:1.5rem!important;border-radius:20px!important}.selfstudy-card-record-btn{width:46px!important;height:46px!important}.selfstudy-card-record-btn svg{width:20px!important;height:20px!important}.selfstudy-card-audio-btn,.selfstudy-card-playback-btn{width:38px!important;height:38px!important}.selfstudy-card-audio-btn svg,.selfstudy-card-playback-btn svg{width:16px!important;height:16px!important}.flip-btn-mini{margin-top:.5rem!important}.flashcard-emoji{font-size:3.8rem!important;margin:.5rem 0!important}.flashcard-word{font-size:2rem!important}.flashcard-chinese{font-size:1.35rem!important}.flashcard-action-tip{font-size:.78rem!important;padding:.6rem!important}.classroom-board{min-height:auto!important;height:auto!important}.animation-stage{height:180px!important;border-radius:16px!important}.actor-node{font-size:2.2rem!important}.bubble{max-width:90%!important;padding:.8rem 1rem!important;border-radius:18px!important}.bubble-text{font-size:.95rem!important}.word-cards-grid{grid-template-columns:1fr!important;gap:.8rem!important}.word-card{padding:1rem!important;flex-direction:row!important;justify-content:flex-start!important;text-align:left!important;gap:1rem!important}.word-card .word-english{font-size:1.25rem!important}.word-card .word-action{display:none!important}.practice-hub{padding:1rem!important;border-radius:18px!important;gap:.8rem!important}.practice-title{font-size:1rem!important}.audio-btn{width:48px!important;height:48px!important;flex-shrink:0!important}.record-btn{width:58px!important;height:58px!important;flex-shrink:0!important}.score-number{font-size:2rem!important}.voice-panel{gap:1rem!important;justify-content:center!important;width:100%!important}.glass-card{padding:1.5rem!important;border-radius:20px!important}.activation-overlay{z-index:2000!important;align-items:flex-start!important;overflow-y:auto!important;padding:2.5rem 0!important}.activation-modal{padding:2rem 1.5rem!important}}.talk-buddy-card-glow{position:relative;overflow:hidden;transition:var(--transition-spring)}.talk-buddy-card-glow:after{content:"";position:absolute;top:0;left:-50%;width:200%;height:100%;background:linear-gradient(to right,#fff0,#ffffff4d,#fff0);transform:skew(-25deg);transition:.75s;opacity:0}.talk-buddy-card-glow:hover:after{left:125%;opacity:1}.talk-buddy-card-glow:hover{transform:translateY(-8px) scale(1.02);box-shadow:0 20px 45px #6c5ce740!important;border-color:#6c5ce780!important}.known-highlight-word{display:inline-block;cursor:pointer;animation:bounce-known-word 2s infinite alternate}.known-highlight-word:hover{transform:scale(1.1) rotate(2deg);text-shadow:0 4px 10px rgba(108,92,231,.2)}@keyframes bounce-known-word{0%{transform:translateY(0)}to{transform:translateY(-2px)}}.talkbuddy-tts-btn{position:absolute;right:-45px;top:12px;border-radius:50%;width:32px;height:32px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px #0000001a;transition:color .2s ease,transform .2s ease}.talkbuddy-tts-btn:hover{transform:scale(1.15)}@media (max-width: 768px){.talkbuddy-selection-stage{padding:.8rem .8rem 90px!important;justify-content:flex-start!important}.talkbuddy-selection-title{font-size:1.15rem!important;margin-bottom:.15rem!important;line-height:1.3!important}.talkbuddy-selection-desc{font-size:.75rem!important;margin-bottom:1.2rem!important}.talkbuddy-companions-grid{gap:.6rem!important;max-width:100%!important;flex-wrap:nowrap!important;justify-content:center!important;padding:0 .2rem!important}.talk-buddy-selection-card{width:auto!important;flex:1 1 0!important;min-width:0!important;max-width:none!important;padding:1rem .4rem!important;border-radius:20px!important;border-width:2px!important}.talk-buddy-selection-card>div:first-child{height:4px!important}.talkbuddy-card-emoji{font-size:2.5rem!important;margin-bottom:.4rem!important}.talk-buddy-selection-card h3{font-size:.82rem!important;margin-bottom:.15rem!important;line-height:1.2!important}.talk-buddy-selection-card span{font-size:.65rem!important;padding:.1rem .35rem!important}.talk-buddy-wrapper .classroom-header{padding:.5rem .8rem!important;flex-wrap:wrap!important;gap:.3rem!important}.talk-buddy-wrapper .classroom-header>button:first-child{padding:.35rem .6rem!important;font-size:.75rem!important}.talk-buddy-wrapper .classroom-header>div:nth-child(2){gap:.4rem!important}.talk-buddy-wrapper .classroom-header>div:nth-child(2) span:first-child{font-size:1.2rem!important}.talk-buddy-wrapper .classroom-header>div:nth-child(2) h4{font-size:.8rem!important}.talk-buddy-wrapper .classroom-header>div:nth-child(2) span:last-child{font-size:.62rem!important}.talk-buddy-wrapper .classroom-header>button:last-child{font-size:.65rem!important;padding:.25rem .5rem!important}.talkbuddy-messages-list{padding:.8rem .6rem!important;gap:.8rem!important}.talkbuddy-messages-list .glass-card{padding:.7rem .8rem!important}.talkbuddy-messages-list .glass-card p:first-of-type{font-size:.95rem!important;line-height:1.5!important}.talkbuddy-messages-list .glass-card p+p{font-size:.72rem!important}.talkbuddy-tts-btn{position:absolute!important;right:6px!important;top:6px!important;width:26px!important;height:26px!important;box-shadow:0 2px 6px #00000014!important}.talkbuddy-tts-btn svg{width:13px!important;height:13px!important}.talkbuddy-quick-options{padding:.3rem .6rem!important;gap:.4rem!important}.talk-buddy-quick-btn{font-size:.75rem!important;padding:.3rem .65rem!important;border-radius:12px!important}.talkbuddy-input-bar{padding:.6rem!important;gap:.5rem!important}.talkbuddy-input-bar .mic-trigger-btn{width:44px!important;height:44px!important}.talkbuddy-input-bar .mic-trigger-btn svg{width:20px!important;height:20px!important}.talkbuddy-input-bar input{font-size:.85rem!important}.talkbuddy-input-bar .btn-primary{width:36px!important;height:36px!important}.talk-buddy-wrapper .pop-up-anim{padding:1.5rem 1.2rem!important;border-radius:24px!important;max-width:92%!important}.talk-buddy-wrapper .pop-up-anim>div:first-child{font-size:3.2rem!important}.talk-buddy-wrapper .pop-up-anim h2{font-size:1.3rem!important}.kids-mode-selection-active .view-header{display:none!important}.kids-profile-selection-card-container{padding:1.5rem 1rem!important;margin:.5rem auto 90px!important;border-radius:20px!important;box-shadow:0 10px 30px #6c5ce70d!important}.kids-profile-selection-title{font-size:1.3rem!important;margin-bottom:.4rem!important;line-height:1.3!important}.kids-profile-selection-subtitle{font-size:.75rem!important;margin-bottom:1.5rem!important}.kids-profile-selection-grid{gap:1rem!important;margin-bottom:1rem!important}.kids-profile-select-card{width:115px!important;padding:1.2rem .5rem!important;border-radius:18px!important;border-width:2px!important}.kids-profile-avatar-emoji{font-size:2.6rem!important;margin-bottom:.4rem!important}.kids-profile-name{font-size:.9rem!important}.kids-profile-age{font-size:.72rem!important;margin-top:.2rem!important;padding:.1rem .35rem!important}.kids-profile-add-card span:first-of-type{font-size:2rem!important;margin-bottom:.3rem!important}.kids-profile-add-title{font-size:.85rem!important}.kids-profile-add-subtitle{font-size:.65rem!important}.kids-profile-empty-tip{font-size:.75rem!important;margin-top:1rem!important}.parent-account-logout-bar{margin-top:2rem!important;padding-top:1.2rem!important;gap:.8rem!important}.parent-account-text{font-size:.75rem!important}.parent-logout-btn{padding:.35rem 1rem!important;font-size:.75rem!important;border-radius:12px!important}.dashboard-container{gap:1.2rem!important}.stat-container{gap:.8rem!important}.stat-card{padding:.8rem 1rem!important;gap:.8rem!important;border-radius:16px!important}.stat-icon{width:44px!important;height:44px!important;border-radius:12px!important;font-size:1.3rem!important}.stat-icon svg{width:20px!important;height:20px!important}.stat-info .stat-value{font-size:1.4rem!important}.stat-info .stat-label{font-size:.75rem!important}.review-list{gap:.8rem!important}.review-item{padding:.7rem .9rem!important;border-radius:14px!important}.review-word-info{gap:.7rem!important}.review-word{font-size:1rem!important}.review-word svg{width:11px!important;height:11px!important}.review-word-info div:last-child div:last-child{font-size:.7rem!important}.review-time{font-size:.72rem!important}.review-item .btn-cute{padding:.3rem .6rem!important;font-size:.72rem!important;border-radius:8px!important}.selfstudy-steer-controls{gap:1rem!important;margin-top:1.2rem!important}.selfstudy-steer-controls .btn-cute{padding:.45rem .8rem!important;gap:.35rem!important;font-size:.85rem!important;border-radius:12px!important;white-space:nowrap!important;flex-shrink:0!important}.selfstudy-steer-controls .btn-cute svg{width:14px!important;height:14px!important;flex-shrink:0!important}.selfstudy-steer-controls span{font-size:.82rem!important;white-space:nowrap!important;flex-shrink:0!important}.selfstudy-score-btn{white-space:nowrap!important;flex-shrink:0!important;font-size:.72rem!important;padding:.25rem .5rem!important}}