:root{--bg: #fff8ec;--primary: #ff7b54;--primary-deep: #f0633b;--teal: #4ecdc4;--yellow: #ffd166;--ink: #3d3a4b;--ink-soft: #8a8698;--card-radius: 28px}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Noto Sans SC,sans-serif;overscroll-behavior:none}body{user-select:none;-webkit-user-select:none;touch-action:manipulation}#app{min-height:100dvh}.app,.home,.session,.parent{max-width:540px;margin:0 auto;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}button{font-family:inherit;border:none;cursor:pointer;color:inherit}.home{min-height:100dvh;display:flex;flex-direction:column;padding:18px 18px 28px}.home-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.logo{font-size:26px;font-weight:800;letter-spacing:1px}.star-chip{background:#fff;border-radius:999px;padding:8px 14px;font-size:16px;font-weight:700;box-shadow:0 2px 10px #3d3a4b14}.review-banner{width:100%;background:linear-gradient(120deg,var(--teal),#6bd5ff);color:#fff;font-size:18px;font-weight:700;border-radius:20px;padding:16px;margin-bottom:16px;box-shadow:0 6px 16px #4ecdc459;animation:breathe 2.2s ease-in-out infinite}@keyframes breathe{0%,to{transform:scale(1)}50%{transform:scale(1.02)}}.pack-grid{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:14px}.pack-card{position:relative;border-radius:var(--card-radius);padding:18px 14px 14px;display:flex;flex-direction:column;align-items:center;gap:4px;min-height:148px;justify-content:center;box-shadow:0 4px 14px #3d3a4b12;transition:transform .12s ease}.pack-card:active{transform:scale(.95)}.pack-emoji{font-size:58px;line-height:1}.pack-zh{font-size:19px;font-weight:800;margin-top:6px}.pack-en{font-size:13px;color:var(--ink-soft);font-weight:600}.home-foot{margin-top:18px;text-align:center}.foot-tip{color:var(--ink-soft);font-size:13px;margin:0 0 12px}.parent-gate{position:relative;overflow:hidden;background:transparent;border:1.5px dashed #d8d2e0;color:var(--ink-soft);font-size:13px;border-radius:14px;padding:10px 22px}.gate-fill{position:absolute;left:0;top:0;bottom:0;background:#ff7b5440;width:0}.gate-label{position:relative}.session{min-height:100dvh;display:flex;flex-direction:column}.session-top{display:flex;align-items:center;gap:12px;padding:14px 18px 6px}.close-btn{width:44px;height:44px;border-radius:50%;background:#fff;font-size:18px;color:var(--ink-soft);box-shadow:0 2px 8px #3d3a4b14;flex-shrink:0}.progress{flex:1;height:12px;background:#f0e9dd;border-radius:999px;overflow:hidden}.progress span{display:block;height:100%;background:linear-gradient(90deg,var(--yellow),var(--primary));border-radius:999px;transition:width .3s ease}.stage{flex:1;display:flex;flex-direction:column;padding:10px 18px 20px}.card-area{flex:1;background:#fff;border-radius:var(--card-radius);box-shadow:0 8px 24px #3d3a4b14;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:24px;min-height:52dvh}.card-emoji{font-size:clamp(120px,40vw,210px);line-height:1.1;animation:pop .45s cubic-bezier(.34,1.56,.64,1)}@keyframes pop{0%{transform:scale(.4);opacity:0}to{transform:scale(1);opacity:1}}.card-word{text-align:center}.word-en{display:block;font-size:clamp(34px,9vw,46px);font-weight:800;letter-spacing:.5px}.word-zh{display:block;font-size:18px;color:var(--ink-soft);font-weight:600;margin-top:2px}.tap-hint{font-size:12px;color:#c9c4d4}.card-actions{display:flex;gap:12px;margin-top:16px}.sound-btn{width:64px;height:64px;border-radius:50%;background:#fff;font-size:26px;box-shadow:0 4px 12px #3d3a4b1a;flex-shrink:0}.sound-btn:active{transform:scale(.92)}.next-btn{flex:1;height:64px;border-radius:999px;background:var(--primary);color:#fff;font-size:21px;font-weight:800;box-shadow:0 6px 16px #ff7b5466}.next-btn:active{transform:scale(.97);background:var(--primary-deep)}.tip-bar{text-align:center;color:var(--ink-soft);font-size:13px;line-height:1.6;background:#fdf3e3;border-radius:14px;padding:10px 14px;margin:14px 0 0}.find-head{display:flex;align-items:center;justify-content:center;gap:14px;margin:8px 0 14px}.find-title{font-size:20px;font-weight:800}.find-grid{flex:1;display:grid;grid-template-columns:1fr 1fr;gap:16px;align-content:center}.find-card{background:#fff;border-radius:var(--card-radius);box-shadow:0 6px 18px #3d3a4b14;min-height:34dvh;display:flex;align-items:center;justify-content:center}.find-emoji{font-size:clamp(90px,26vw,140px);line-height:1}.find-card:active{transform:scale(.96)}.find-card.wrong{animation:shake .45s ease;background:#ffecec}.find-card.solved{background:#fffbe8;animation:pop .4s cubic-bezier(.34,1.56,.64,1);box-shadow:0 0 0 4px var(--yellow),0 6px 18px #ffd16680}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-9px)}50%{transform:translate(9px)}75%{transform:translate(-5px)}}.end-stage{align-items:center;justify-content:center;text-align:center;gap:10px}.end-emoji{font-size:88px;animation:pop .5s cubic-bezier(.34,1.56,.64,1)}.end-title{font-size:30px;font-weight:800}.end-stars{font-size:26px;letter-spacing:4px}.end-sub{color:var(--ink-soft);font-size:15px;margin:4px 0 12px}.home-btn{margin-top:10px;background:transparent;color:var(--ink-soft);font-size:16px;font-weight:600;padding:10px}.parent{min-height:100dvh;padding:18px;-webkit-user-select:text;user-select:text}.parent-head{display:flex;align-items:center;gap:12px;margin-bottom:16px}.parent-title{font-size:22px;font-weight:800}.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-bottom:14px}.stat-box{background:#fff;border-radius:18px;padding:12px 6px;text-align:center;box-shadow:0 2px 10px #3d3a4b0f}.stat-box b{display:block;font-size:22px;color:var(--primary)}.stat-box span{font-size:11px;color:var(--ink-soft)}.card{background:#fff;border-radius:20px;padding:16px 18px;margin-bottom:14px;box-shadow:0 2px 10px #3d3a4b0f}.card h3{margin:0 0 12px;font-size:16px}.pack-progress{display:flex;align-items:center;gap:10px;margin-bottom:10px}.pp-label{width:96px;font-size:13px;font-weight:600;flex-shrink:0}.pp-bar{flex:1;height:10px;background:#f0e9dd;border-radius:999px;overflow:hidden}.pp-bar span{display:block;height:100%;background:var(--teal);border-radius:999px;transition:width .4s ease}.pp-num{width:38px;text-align:right;font-size:12px;color:var(--ink-soft)}.guide{margin:0;padding-left:4px;list-style:none;font-size:13.5px;line-height:1.9;color:var(--ink)}.card.danger .danger-tip{font-size:12.5px;color:var(--ink-soft);margin:0 0 10px}.reset-btn{background:#ffecec;color:#d64545;font-weight:700;border-radius:12px;padding:10px 16px;font-size:14px}.parent-foot{text-align:center;color:#c9c4d4;font-size:12px}.confetti{position:fixed;top:-50px;z-index:999;animation:fall 1.4s ease-in forwards;pointer-events:none}@keyframes fall{to{transform:translateY(115vh) rotate(340deg)}}