:root{--pink: #ff7eb9;--pink-deep: #ff4fa3;--purple: #a685ff;--purple-deep: #7c4dff;--blue: #5ec8ff;--cyan: #7afcff;--yellow: #ffd86b;--orange: #ff9e7e;--green: #7cf29c;--green-deep: #2fb96a;--red: #ff6b6b;--ink: #3a2c5a;--white: #ffffff;--shadow: 0 8px 0 rgba(124, 77, 255, .18), 0 16px 28px rgba(124, 77, 255, .2);--radius: 26px;font-family:Noto Sans TC,PingFang TC,Microsoft JhengHei,system-ui,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body,#root{margin:0;padding:0;min-height:100%;height:100%}body{color:var(--ink);overflow-x:hidden;background:linear-gradient(160deg,#fff0f7,#f3f0ff 45%,#eafcff);user-select:none;-webkit-user-select:none}button{font-family:inherit;cursor:pointer;border:none;outline:none}h1,h2,h3,p{margin:0}.app-shell{position:relative;min-height:100vh;display:flex;flex-direction:column}.top-nav{position:sticky;top:0;z-index:30;display:flex;gap:8px;align-items:center;padding:10px 14px;background:#ffffffd1;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 4px 18px #7c4dff1f;flex-wrap:wrap}.top-nav .brand{font-weight:900;font-size:clamp(1rem,4vw,1.4rem);color:var(--purple-deep);margin-right:auto;display:flex;align-items:center;gap:6px}.nav-btn{font-weight:800;font-size:clamp(.85rem,3.2vw,1.05rem);color:var(--purple-deep);background:#a685ff29;padding:10px 16px;border-radius:999px;transition:transform .12s ease,background .2s ease}.nav-btn.active{color:#fff;background:linear-gradient(180deg,var(--purple),var(--purple-deep));box-shadow:0 4px #7c4dff40}.nav-btn:active{transform:translateY(2px) scale(.97)}.page{flex:1;width:100%;max-width:1080px;margin:0 auto;padding:16px 16px 60px}.big-btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:900;font-size:clamp(1rem,4vw,1.35rem);color:var(--white);padding:14px 26px;border-radius:999px;background:linear-gradient(180deg,var(--pink),var(--pink-deep));box-shadow:var(--shadow);transition:transform .12s ease,filter .2s ease;text-shadow:0 2px 0 rgba(0,0,0,.12)}.big-btn:active{transform:translateY(5px) scale(.97)}.big-btn:hover{filter:brightness(1.05) saturate(1.1)}.big-btn.green{background:linear-gradient(180deg,#9bf6b6,var(--green));color:#1f6b3a;text-shadow:none}.big-btn.blue{background:linear-gradient(180deg,var(--cyan),var(--blue));color:#0a4c73;text-shadow:none}.big-btn.yellow{background:linear-gradient(180deg,#ffe89a,var(--yellow));color:#8a5a00;text-shadow:none}.big-btn.purple{background:linear-gradient(180deg,#c3aaff,var(--purple-deep))}.big-btn.ghost{background:#ffffffdb;color:var(--purple-deep);box-shadow:0 5px #7c4dff24}.big-btn:disabled{opacity:.45;filter:grayscale(.3);cursor:not-allowed}.symbol-strip{display:flex;gap:8px;overflow-x:auto;padding:8px 4px 14px;scroll-snap-type:x mandatory}.symbol-strip::-webkit-scrollbar{height:6px}.symbol-strip::-webkit-scrollbar-thumb{background:#a685ff66;border-radius:999px}.sym-chip{flex:0 0 auto;width:52px;height:52px;border-radius:16px;font-size:1.5rem;font-weight:900;color:var(--purple-deep);background:#fff;box-shadow:0 3px #7c4dff29;scroll-snap-align:center;transition:transform .12s ease}.sym-chip.active{color:#fff;background:linear-gradient(180deg,var(--pink),var(--pink-deep));transform:translateY(-3px) scale(1.06)}.sym-chip:active{transform:scale(.94)}.page-head{text-align:center;margin:6px 0 12px}.page-head h2{font-size:clamp(1.4rem,5.5vw,2.2rem);font-weight:900;color:var(--purple-deep)}.page-head .hint{margin-top:4px;color:#7a6ba3;font-weight:700;font-size:clamp(.85rem,3.2vw,1.05rem)}.big-symbol{display:inline-flex;align-items:center;justify-content:center;width:72px;height:72px;border-radius:22px;font-size:2.6rem;font-weight:900;color:#fff;background:linear-gradient(180deg,var(--purple),var(--purple-deep));box-shadow:0 6px #7c4dff40}.lesson{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:10px}.lesson-col{display:flex;flex-direction:column;gap:14px}.word-card,.img-card{background:#fff;border-radius:var(--radius);box-shadow:0 6px #7c4dff24,0 14px 26px #7c4dff24;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:18px 12px;min-height:150px;transition:transform .12s ease}.word-card{cursor:pointer}.word-card:active{transform:scale(.97)}.word-card .word{font-size:clamp(1.8rem,7vw,2.8rem);font-weight:900;color:var(--ink);letter-spacing:2px}.word-card .zhuyin{font-size:clamp(1rem,4vw,1.4rem);font-weight:800;color:var(--pink-deep);letter-spacing:2px}.word-card .spk{margin-top:4px;font-size:1.4rem}.img-card .emoji{font-size:clamp(3.4rem,14vw,5.5rem);line-height:1}.pager{display:flex;align-items:center;justify-content:center;gap:16px;margin-top:22px}.pager .page-info{font-weight:800;color:var(--purple-deep);min-width:80px;text-align:center}.round-btn{width:60px;height:60px;border-radius:50%;font-size:1.8rem;color:#fff;background:linear-gradient(180deg,var(--purple),var(--purple-deep));box-shadow:0 5px #7c4dff40;display:flex;align-items:center;justify-content:center}.round-btn:active{transform:translateY(3px) scale(.96)}.round-btn:disabled{opacity:.35}.pic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:12px;margin-top:8px}.pic-cell{position:relative;aspect-ratio:1;border-radius:20px;background:#fff;box-shadow:0 5px #7c4dff1f,0 10px 20px #7c4dff1f;display:flex;align-items:center;justify-content:center;font-size:clamp(2.8rem,9vw,4rem);cursor:pointer;transition:transform .12s ease,box-shadow .2s ease;perspective:800px}.pic-cell:active{transform:scale(.95)}.pic-cell.picked{outline:4px solid var(--pink-deep);box-shadow:0 0 0 4px #ff4fa340,0 8px 22px #ff4fa34d}.pic-cell .pick-badge{position:absolute;top:-8px;right:-8px;width:30px;height:30px;border-radius:50%;background:var(--pink-deep);color:#fff;font-size:.95rem;font-weight:900;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 8px #0003}.focus-stage{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center;margin-top:10px;min-height:50vh}.flip-card{width:clamp(160px,40vw,240px);aspect-ratio:3 / 4;perspective:1000px;cursor:pointer}.flip-inner{position:relative;width:100%;height:100%;transition:transform .6s cubic-bezier(.4,.2,.2,1);transform-style:preserve-3d}.flip-card.flipped .flip-inner{transform:rotateY(180deg)}.flip-face{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:24px;backface-visibility:hidden;-webkit-backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;box-shadow:0 8px #7c4dff29,0 16px 30px #7c4dff2e}.flip-front{background:#fff;font-size:clamp(4rem,16vw,7rem)}.flip-back{background:linear-gradient(160deg,#fff4fb,#f1ecff);transform:rotateY(180deg);padding:16px}.flip-back .word{font-size:clamp(2rem,8vw,3rem);font-weight:900;letter-spacing:2px}.flip-back .zhuyin{font-size:clamp(1.1rem,5vw,1.6rem);font-weight:800;color:var(--pink-deep);letter-spacing:2px}.flip-back .mini-emoji{font-size:2.4rem}.toolbar{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:8px 0 16px}.tab-row{display:flex;gap:10px;justify-content:center;margin-bottom:14px}.tab{font-weight:800;font-size:clamp(.9rem,3.6vw,1.15rem);padding:10px 20px;border-radius:999px;color:var(--purple-deep);background:#a685ff29}.tab.active{color:#fff;background:linear-gradient(180deg,var(--blue),var(--purple-deep));box-shadow:0 4px #7c4dff40}.section-block{background:#ffffffb3;border-radius:var(--radius);padding:14px;margin-bottom:16px;box-shadow:0 5px 18px #7c4dff1a}.section-block h3{font-size:clamp(1.1rem,4.4vw,1.5rem);color:var(--purple-deep);margin-bottom:4px}.section-block .desc{color:#7a6ba3;font-weight:700;font-size:.9rem;margin-bottom:10px}.sym-pick-grid{display:flex;flex-wrap:wrap;gap:7px}.pick-chip{min-width:46px;height:46px;padding:0 8px;border-radius:14px;font-size:1.3rem;font-weight:900;color:var(--purple-deep);background:#fff;box-shadow:0 3px #7c4dff24;display:flex;align-items:center;justify-content:center;transition:transform .1s ease}.pick-chip.on{color:#fff;background:linear-gradient(180deg,var(--green),var(--green-deep));transform:translateY(-2px)}.pick-chip.tone{font-size:1.1rem;min-width:56px}.pick-chip.tone.on{background:linear-gradient(180deg,var(--orange),#ff7e4f)}.pick-chip:active{transform:scale(.92)}.target-words{display:flex;flex-wrap:wrap;gap:8px;margin-top:8px}.word-chip{padding:8px 14px;border-radius:14px;font-weight:800;font-size:clamp(.9rem,3.6vw,1.1rem);color:var(--ink);background:#fff;box-shadow:0 3px #7c4dff1f}.word-chip.on{color:#fff;background:linear-gradient(180deg,var(--pink),var(--pink-deep))}.chosen-bar{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:8px}.chip-tag{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:999px;font-weight:800;font-size:.95rem;background:#7c4dff1f;color:var(--purple-deep)}.chip-tag .x{font-weight:900;cursor:pointer;opacity:.7}.dnd-stage{display:flex;flex-direction:column;align-items:center;gap:18px}.target-img-box{width:clamp(140px,38vw,200px);aspect-ratio:1;border-radius:28px;background:#fff;box-shadow:0 8px #7c4dff29,0 16px 28px #7c4dff2e;display:flex;align-items:center;justify-content:center;font-size:clamp(4.5rem,18vw,7rem);touch-action:none}.drag-img{font-size:clamp(4rem,16vw,6rem);cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;display:inline-block;filter:drop-shadow(0 8px 12px rgba(0,0,0,.18))}.drag-img:active{cursor:grabbing}.helpers-row{display:flex;gap:clamp(24px,12vw,90px);justify-content:center;width:100%;margin-top:6px}.helper{display:flex;flex-direction:column;align-items:center;gap:8px}.helper-face{width:clamp(110px,30vw,160px);aspect-ratio:1;border-radius:28px;background:linear-gradient(160deg,#fff7d6,#ffe1ef);box-shadow:0 8px #7c4dff24,0 14px 26px #7c4dff29;display:flex;align-items:center;justify-content:center;font-size:clamp(3rem,12vw,4.6rem);position:relative;transition:transform .2s ease,box-shadow .2s ease}.helper-face.drop-hover{transform:scale(1.06);box-shadow:0 0 0 5px #7ccdff80,0 14px 26px #7c4dff33}.helper-face.talking{animation:talk .28s ease-in-out infinite}@keyframes talk{0%,to{transform:scaleY(1)}50%{transform:scaleY(.9)}}.helper-face.correct{box-shadow:0 0 0 6px #7cf29c99,0 14px 26px #2fb96a4d}.helper-face.wrong{animation:shake .4s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-8px)}75%{transform:translate(8px)}}.speak-btn{display:inline-flex;align-items:center;gap:6px;font-weight:800;font-size:clamp(.9rem,3.6vw,1.1rem);color:#fff;padding:10px 18px;border-radius:999px;background:linear-gradient(180deg,var(--blue),var(--purple-deep));box-shadow:0 4px #7c4dff40}.speak-btn:active{transform:translateY(3px) scale(.97)}.dnd-prompt{font-weight:800;color:var(--purple-deep);font-size:clamp(1rem,4.2vw,1.3rem);text-align:center}.reward-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:#fff6;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);pointer-events:none}.reward-overlay .big{font-size:clamp(4rem,20vw,8rem);animation:pop-in .4s cubic-bezier(.22,1.4,.4,1) both}.reward-overlay .txt{font-size:clamp(1.6rem,7vw,2.6rem);font-weight:900;color:var(--green-deep)}@keyframes pop-in{0%{transform:scale(.3);opacity:0}to{transform:scale(1);opacity:1}}.home{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding:40px 16px;text-align:center;min-height:70vh}.home h1{font-size:clamp(2rem,8vw,3.4rem);font-weight:900;background:linear-gradient(90deg,var(--pink-deep),var(--purple-deep),var(--blue));-webkit-background-clip:text;background-clip:text;color:transparent}.home .menu{display:flex;flex-direction:column;gap:16px;width:min(360px,90vw)}.home .card-link{display:flex;align-items:center;gap:14px;text-align:left;padding:18px 22px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);transition:transform .12s ease}.home .card-link:active{transform:scale(.97)}.home .card-link .num{width:46px;height:46px;flex:0 0 auto;border-radius:14px;font-size:1.4rem;font-weight:900;color:#fff;display:flex;align-items:center;justify-content:center;background:linear-gradient(180deg,var(--purple),var(--purple-deep))}.home .card-link .t{font-weight:900;font-size:1.15rem;color:var(--ink)}.home .card-link .d{font-weight:700;font-size:.9rem;color:#7a6ba3}.bg-bubbles{position:fixed;top:0;right:0;bottom:0;left:0;z-index:0;pointer-events:none;overflow:hidden}.bg-bubbles span{position:absolute;bottom:-60px;border-radius:50%;opacity:.35;animation:rise linear infinite}@keyframes rise{to{transform:translateY(-115vh) rotate(160deg)}}@media (max-width: 560px){.lesson{gap:10px}.word-card,.img-card{min-height:120px;padding:12px 8px}}