:root{font-family:-apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;color:#243b39;background:#f4f8f1;--green:#176c57;--line:#d8e7db;--muted:#62766f;--paper:#fffef8;color-scheme:light}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 5% 5%,#dff4e9,transparent 55%),radial-gradient(ellipse at 100% 15%,#fff1cd,transparent 55%);min-height:100vh}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer;touch-action:manipulation}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid #ddaa4f;outline-offset:3px}#app{max-width:1200px;margin:auto;padding:20px 24px 60px}header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.brand{display:flex;gap:10px;align-items:center}.brand .logo{font-size:36px;background:#cfe9d8;padding:6px;border-radius:14px}.brand strong{display:block;font-size:23px}.brand small{color:var(--muted);font-size:12px}nav{display:flex;gap:7px;flex-wrap:wrap}.btn,nav button{border:1px solid var(--line);background:white;color:var(--green);border-radius:13px;padding:12px 16px;min-height:46px;font-weight:700;line-height:1.4}.btn.main,nav button.active{background:var(--green);color:white;border-color:var(--green)}.btn.soft{background:#e9f4e9}.btn.warm{background:#fff1d8;color:#755723}.btn.ghost{background:transparent;border-color:transparent}.btn.small{font-size:14px;padding:9px 13px;min-height:42px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.hero{display:grid;grid-template-columns:1.5fr 1fr;gap:20px;margin-bottom:20px}.hero-copy{background:linear-gradient(120deg,#d3efdd,#fff4ce);border:1px solid var(--line);border-radius:28px;padding:28px}.eyebrow{color:var(--green);font-size:12px;letter-spacing:2px;font-weight:800}h1{font-size:34px;line-height:1.3;margin:12px 0}h2{font-size:23px;margin:16px 0 8px}h3{margin:6px 0 10px;font-size:19px}p{line-height:1.75;margin:8px 0}.muted{color:var(--muted)}.hero-side{background:#a9d6bc;border-radius:28px;position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;overflow:hidden;padding:24px;min-height:250px}.hero-side .dino{font-size:100px;line-height:1.2}.bubble{background:#fffef3;border-radius:16px;padding:14px;font-weight:700;max-width:270px;text-align:center}.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.grid.three{grid-template-columns:repeat(3,1fr)}.grid.two{grid-template-columns:repeat(2,1fr)}.card{background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:22px;box-shadow:0 6px 24px #23523c06}.card p{font-size:15px}.stat{font-size:34px;font-weight:850;color:var(--green);line-height:1.2}.tag{display:inline-block;border-radius:20px;background:#e4f1e4;color:#316950;font-size:12px;padding:5px 10px;font-weight:700}.tag.warm{background:#fff1cf;color:#8b6c21}.section{margin-top:24px}.note{background:#f3f7ef;border:1px dashed #bfd3bf;border-radius:15px;padding:13px 16px;font-size:14px;line-height:1.7}.notice{background:#fff4d7;color:#725826;padding:12px 16px;border-radius:13px;margin:14px 0;font-size:14px}.tool{margin:18px 0;display:flex;gap:10px;flex-wrap:wrap}input,select{border:1px solid #c9dccd;border-radius:12px;background:white;padding:11px 13px;max-width:100%;min-height:46px}.list{display:grid;grid-template-columns:repeat(4,1fr);gap:11px;margin:14px 0}.tile{background:#fffef9;border:1px solid var(--line);border-radius:17px;padding:16px;text-align:left;color:inherit;min-height:130px}.tile:hover{border-color:#7aa98f}.tile .char{font-size:38px;display:block;line-height:1.4}.tile .word{font-size:21px;font-weight:750;display:block}.tile .icon{font-size:30px}.tile small{display:block;color:var(--muted);font-size:12px;margin-top:5px}.tabs{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0}.tabs button{border-radius:24px;padding:9px 16px;border:1px solid var(--line);background:#fff}.tabs .active{background:#d8ebdd;border-color:#5b9975}.playbox{max-width:940px;margin:16px auto}.playhead{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-bottom:16px}.playcard{padding:30px;text-align:center;background:#fffef9;border:1px solid var(--line);border-radius:25px}.bigchar{font-size:115px;line-height:1.45;font-family:'Kaiti SC','KaiTi','STKaiti',serif}.bigword{font-size:40px;line-height:1.4;word-break:break-word}.scene{font-size:44px;white-space:pre-line;line-height:1.5;min-height:70px;display:flex;align-items:center;justify-content:center}.choices{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:23px 0}.choices.hanzi{grid-template-columns:repeat(4,1fr)}.choice{border:2px solid #d7e5d8;background:white;border-radius:18px;padding:18px 12px;min-height:140px;color:inherit}.choice .label{display:block;font-size:16px;line-height:1.5;margin-top:10px}.choice.good{border-color:#3a8b62;background:#edf7ed}.choice.bad{border-color:#cbaf77;background:#fff7e6}.feedback{background:#e7f4e5;border-radius:16px;padding:16px;text-align:left;margin:16px 0;line-height:1.7}.feedback.retry{background:#fff2d9}.transcript{border-left:4px solid #b1cfba;text-align:left;background:#f4f8ef;padding:16px;border-radius:8px;margin:16px 0}.actions{justify-content:center;margin:15px 0}.progress{height:8px;background:#e3ede0;border-radius:8px;overflow:hidden}.progress span{display:block;background:#5ba67e;height:100%}.oral-levels{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}.oral-levels .btn{padding:20px 12px}.mission{text-align:left;background:#fff4d9;border-radius:16px;padding:18px;margin-top:20px}.review-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line);padding:14px 0}.review-row:last-child{border-bottom:0}.parent-layout{display:grid;grid-template-columns:1fr 1fr;gap:18px}.parent-layout label{display:block;margin-top:12px}.parent-layout input{width:90px;margin-left:12px}.details{font-size:14px;line-height:1.8}.source{font-size:13px;display:block;margin:10px 0;color:var(--green);overflow-wrap:anywhere}#toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:min(90vw,700px);padding:14px 20px;background:#234b3d;color:#fff;border-radius:14px;z-index:20;display:none;box-shadow:0 6px 30px #0002}.hidden{display:none!important}footer{margin-top:28px;color:var(--muted);font-size:12px;line-height:1.7}.no{max-width:650px;margin:50px auto;text-align:center}.gate{max-width:500px;margin:40px auto}.pager{display:flex;gap:10px;align-items:center;justify-content:center;margin:20px}a{color:var(--green)}.hintlabel{font-size:13px;color:var(--muted)}.checklist{display:grid;gap:9px}.checklist button{text-align:left}.session-meta{font-size:13px;color:var(--muted);margin-top:10px}.parent-mark{background:#f1ecff;border-color:#ded0fa;color:#534578}
@media(max-width:1000px){header{align-items:flex-start;flex-direction:column}.grid{grid-template-columns:repeat(2,1fr)}.list{grid-template-columns:repeat(3,1fr)}}
@media(max-width:650px){#app{padding:14px 14px 50px}h1{font-size:27px}.hero{grid-template-columns:1fr}.hero-side{display:none}.hero-copy{padding:23px}.grid,.grid.three,.grid.two,.parent-layout{grid-template-columns:1fr}.list{grid-template-columns:repeat(2,1fr)}.choices{grid-template-columns:1fr}.choices .choice{min-height:90px;display:flex;gap:16px;align-items:center;justify-content:center}.choices.hanzi{grid-template-columns:repeat(2,1fr)}.choices.hanzi .choice{min-height:110px}.playcard{padding:18px 14px}.oral-levels{grid-template-columns:1fr}.scene{font-size:34px}.bigchar{font-size:88px}nav{gap:5px}nav button{padding:10px 12px;font-size:14px}.review-row{align-items:flex-start} .tile{padding:14px}.brand strong{font-size:21px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}