:root{font-family:system-ui,-apple-system,"Microsoft YaHei",sans-serif;color:#263b42;background:#f7f9f8;font-size:16px;--accent:#177663;--orange:#e85c32;--muted:#586c70;--line:#dbe5e2;--card:#fff}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,textarea,select{touch-action:manipulation}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #d78a0b;outline-offset:3px}button:disabled{opacity:.5;cursor:default}[hidden]{display:none!important}h1{font-size:clamp(1.5rem,2.5vw,2rem);margin:0 0 8px;line-height:1.3}h2{font-size:1.25rem;margin:0 0 14px}p{line-height:1.7;margin:8px 0;color:var(--muted)}small{font-size:.875rem;color:var(--muted)}.eyebrow{font-size:.75rem;font-weight:750;letter-spacing:.1em;color:var(--accent);margin-bottom:10px}.sidebar{width:218px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:32px 20px;display:flex;flex-direction:column}.brand{font-size:1.25rem;font-weight:850}.sidebar nav{display:grid;gap:12px;margin-top:56px}.sidebar nav a{display:flex;align-items:center;gap:14px;padding:16px;border-radius:14px;font-weight:650}.sidebar nav a:hover{background:#f2f6f4}.sidebar nav a.active{background:#e3f3ed;color:var(--accent)}.sidebar-bottom{margin-top:auto;border-top:1px solid var(--line);padding:20px 8px 0}.sidebar-bottom p{font-weight:750;color:#263b42}.sidebar-bottom a{font-size:.875rem;color:var(--muted)}#mainContent{max-width:1370px;margin-left:218px;padding:36px 42px 60px;min-width:0;outline:none}.page-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px}.hero{display:flex;align-items:center;justify-content:space-between;gap:24px;border-radius:24px;padding:32px;background:#e1f1e9;border:1px solid #c8e1d5}.hero h2{font-size:clamp(1.5rem,2.6vw,2rem);margin:18px 0 12px}.hero p{color:#3f675b}.hero progress{display:block;width:min(100%,420px);height:10px;margin:20px 0 26px;accent-color:var(--accent)}.planet{font-size:100px;min-width:160px;display:grid;justify-items:center;transform:rotate(-8deg)}.planet span{font-size:14px;font-weight:800;color:#1d6454;letter-spacing:3px;transform:rotate(8deg)}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.btn{min-height:48px;padding:11px 18px;border:1px solid #cddcd6;border-radius:12px;background:#fff;color:#294c42;font-weight:650;line-height:1.4;max-width:100%;overflow-wrap:anywhere}.btn:hover{background:#edf5f0;border-color:var(--accent)}.btn.primary{color:white;background:var(--accent);border-color:var(--accent)}.btn.selected{background:#e1f1e9;border-color:var(--accent)}.pill{display:inline-block;padding:5px 10px;background:#f3f7f2;border:1px solid #d6e6dc;border-radius:9px;color:#315d49;font-size:.875rem}.pill.warning{background:#fff5e4;color:#825400}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:22px 0 32px}.stats>div{padding:20px;border-bottom:2px solid var(--line);display:flex;gap:16px;align-items:center}.stats strong{font-size:1.8rem;color:var(--accent)}.stats span{font-size:.875rem;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:18px 0}.entry{min-width:0;text-align:left;position:relative;display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:24px;border:1px solid var(--line);background:#fff;border-radius:18px;color:inherit;min-height:180px}.entry:hover{border-color:var(--accent);box-shadow:0 8px 24px #244b3510}.entry-icon{font-size:2rem}.entry strong{font-size:1.125rem}.entry>span:not(.entry-icon){font-size:.875rem;line-height:1.65;color:var(--muted)}.entry b{position:absolute;right:20px;top:22px;color:var(--accent)}.panel{padding:24px;background:#fff;border:1px solid var(--line);border-radius:18px;margin:20px 0}.section-head{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px}.section-head h2{margin:0}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 22px}.word-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.word-tile{padding:18px 12px;display:flex;flex-direction:column;gap:10px;align-items:center;border:1px solid var(--line);background:#f8faf8;border-radius:14px;min-width:0;overflow-wrap:anywhere}.word-tile>span:first-child{font-size:2rem}.word-tile strong{font-size:1.1rem}.steps{display:flex;justify-content:space-between;gap:6px;list-style:none;padding:0;margin:0 0 16px}.steps li{padding:10px 6px;border-bottom:3px solid var(--line);font-size:.875rem;flex:1;text-align:center;color:var(--muted)}.steps 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#9bb7ab;border-radius:14px}.letter-pool{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin:16px 0 24px}.letter{min-width:48px}.muted{color:var(--muted);font-size:.875rem}.memory-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;max-width:560px;margin:auto}.memory-card{aspect-ratio:1;border:2px solid var(--line);border-radius:18px;background:#207563;color:white;font-size:clamp(1rem,2vw,1.75rem);font-weight:750;padding:8px;overflow-wrap:anywhere}.memory-card.matched{background:#edf5ef;color:var(--accent);opacity:1}.result{text-align:center;max-width:800px;margin:24px auto}.result .row{justify-content:center}.result-score{font-size:4rem;font-weight:850;color:var(--accent)}.result-score small{font-size:1.25rem}.list-row{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.list-row:last-child{border-bottom:0}.list-row>div:first-child,.list-row>span:first-child{min-width:0;flex:1}.list-row p{font-size:.875rem}.list-row .row{flex-shrink:0}.empty{padding:40px 16px;color:var(--muted);text-align:center;line-height:1.8}.narrow{max-width:620px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}label{display:block;margin:14px 0;font-weight:600;line-height:1.7}input,textarea,select{border:1px solid #acbeb5;background:#fff;border-radius:10px;padding:12px;color:#263b42;min-height:48px;max-width:100%}label input,label textarea,label select{display:block;width:100%;margin-top:6px}textarea{width:100%;resize:vertical}input[type=checkbox]{width:22px;height:22px;min-height:22px;margin:0;accent-color:var(--accent)}.check{display:flex;gap:12px;align-items:center}form .btn{margin-top:10px}hr{border:0;border-top:1px solid var(--line);margin:24px 0}.modal-shade{position:fixed;inset:0;background:#173f3966;display:flex;align-items:center;justify-content:center;padding:24px;z-index:50}.modal{background:#fff;border-radius:20px;width:680px;max-width:100%;max-height:90dvh;overflow:auto;padding:26px}.import-preview{max-height:320px;overflow:auto;background:#f4f8f5;padding:14px;border-radius:10px}#toast-root{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);max-width:90vw;z-index:100;background:#173e34;color:white;padding:14px 20px;border-radius:12px;opacity:0;pointer-events:none;line-height:1.6}#toast-root.show{opacity:1}.tabbar{display:none}summary{cursor:pointer;min-height:44px;font-weight:650}body:has(.modal){overflow:hidden}@media(min-width:1500px){#mainContent{margin-right:auto}}@media(max-width:1100px){#mainContent{padding:28px 24px}.sidebar{width:190px}#mainContent{margin-left:190px}.cards{grid-template-columns:repeat(2,minmax(0,1fr))}.word-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.stats>div{flex-direction:column;align-items:flex-start;gap:5px}.planet{font-size:80px;min-width:100px}}@media(max-width:767px){.sidebar{display:none}#mainContent{margin:0;padding:22px 16px calc(100px + env(safe-area-inset-bottom))}.tabbar{display:grid;grid-template-columns:repeat(4,1fr);position:fixed;bottom:0;left:0;right:0;padding:8px 10px calc(8px + env(safe-area-inset-bottom));background:#fffffffa;border-top:1px solid var(--line);z-index:20}.tabbar a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;min-height:52px;font-size:.875rem;border-radius:12px}.tabbar a span{font-size:1.3rem}.tabbar a.active{background:#e4f2e9;color:#146047;font-weight:750}.page-head{gap:12px;align-items:flex-start;margin-bottom:20px}.page-head>.btn{padding:10px 12px;flex-shrink:0}.eyebrow{font-size:.7rem;letter-spacing:.05em}.hero{padding:22px;position:relative;display:block}.hero h2{font-size:1.55rem}.planet{display:none}.hero .row{align-items:stretch}.hero .primary{flex:1}.stats{gap:8px;margin:18px 0 26px}.stats>div{padding:12px 8px;gap:6px}.stats strong{font-size:1.55rem}.stats span{font-size:.8rem}.cards{grid-template-columns:1fr 1fr;gap:10px}.entry{padding:18px 14px;gap:8px;min-height:168px}.entry b{right:12px;top:16px}.entry strong{font-size:1rem}.entry-icon{font-size:1.75rem}.entry>span:not(.entry-icon){font-size:.85rem}.panel{padding:20px 16px;margin:16px 0}.word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.steps{gap:2px}.steps li{font-size:.8rem;padding:9px 1px}.big-emoji{font-size:3.25rem;margin:14px 0}.word-hero{font-size:2.3rem}.learning{padding:24px 16px}.sentence{font-size:1.6rem}.action-bar{bottom:calc(82px + env(safe-area-inset-bottom));padding:10px;margin-top:18px}.action-bar .btn{padding:10px 12px}.choices{gap:10px;margin:20px auto}.choice{min-height:104px;padding:12px 8px}.hud{font-size:.875rem;padding:12px;gap:8px}.memory-grid{gap:8px}.memory-card{font-size:1rem;border-radius:12px}.form-grid{grid-template-columns:1fr;gap:0}.list-row{align-items:flex-start;flex-wrap:wrap}.list-row .row{width:100%}.modal-shade{padding:12px}.modal{padding:20px 16px;max-height:90dvh}.section-head{align-items:flex-start}.modal .section-head h2{font-size:1.15rem}#toast-root{bottom:calc(90px + env(safe-area-inset-bottom))}.recorder .row .btn{flex:1}.result-score{font-size:3.3rem}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media(max-width:350px){.cards{grid-template-columns:1fr}.steps li{font-size:.75rem}.hud{font-size:.8rem}}
/* Gentle movement keeps targets reachable; slow mode also reduces motion. */
.moles .choice{animation:mole-arrive .4s ease-out both;border-bottom:10px solid #bd9576;background:#fff8ed}.moles .choice:nth-child(2){animation-delay:.08s}.moles .choice:nth-child(3){animation-delay:.16s}.moles .choice:nth-child(4){animation-delay:.24s}.balloons{padding:16px 6px}.balloons .choice{animation:balloon-float 3s ease-in-out infinite;background:#fde3da;border-color:#f3b9a7}.balloons .choice:nth-child(even){animation-delay:-1.5s;background:#e0edff;border-color:#a7c3f1}.choice.correct:disabled{opacity:1;outline:3px solid #177663;background:#d8f3e2}.choice.missed:disabled{opacity:.55}.balloons .choice:disabled{animation:none}.slow-mode .choice{animation:none}@keyframes mole-arrive{from{transform:translateY(18px);opacity:.4}to{transform:translateY(0);opacity:1}}@keyframes balloon-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}@media(prefers-reduced-motion:reduce){.choice{animation:none!important}}