:root{--bg:#f5f7fb;--card:#fff;--text:#1f2a44;--muted:#6b7690;--line:#e3e8f2;--primary:#4f7cff;--primary-soft:#e9efff;--ok:#1fa971;--ok-soft:#e5f7ef;--warn:#e58a00;--warn-soft:#fff4e0;--bad:#d4544a;--bad-soft:#fdecea;--radius:14px;color:var(--text);background:var(--bg);-webkit-text-size-adjust:100%;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}a{color:var(--primary);text-decoration:none}h1{margin:8px 0 16px;font-size:24px}h2{margin:20px 0 10px;font-size:19px}h3{margin:14px 0 8px;font-size:16px}p{line-height:1.6}main{max-width:960px;margin:0 auto;padding:16px}main.with-nav{padding-bottom:88px}main.wide{max-width:none}button,.btn{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--text);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:6px;min-height:40px;padding:9px 16px;transition:background .15s,border-color .15s;display:inline-flex}button:hover:not(:disabled){border-color:var(--primary)}button:disabled{opacity:.5;cursor:not-allowed}button.primary,.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}button.primary:hover:not(:disabled){background:#3d6af0}button.big{border-radius:14px;min-height:56px;padding:12px 28px;font-size:19px}button.danger{color:var(--bad);border-color:#f0c9c5}button.link{color:var(--primary);background:0 0;border:none;min-height:auto;padding:4px 8px}button.small{min-height:30px;padding:4px 10px;font-size:13px}input,select,textarea{font:inherit;border:1px solid var(--line);color:var(--text);background:#fff;border-radius:10px;max-width:100%;min-height:40px;padding:9px 12px}input:focus,select:focus,textarea:focus,button:focus-visible{outline:3px solid var(--primary-soft);border-color:var(--primary)}textarea{width:100%;font-family:ui-monospace,Menlo,monospace;font-size:13px}label{color:var(--muted);margin:10px 0 4px;font-size:14px;display:block}label.inline{color:var(--text);align-items:center;gap:6px;margin:0;display:inline-flex}.card{background:var(--card);border-radius:var(--radius);margin-bottom:14px;padding:18px;box-shadow:0 1px 3px #14285a0f}.muted{color:var(--muted)}.small{font-size:13px}.row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.row.between{justify-content:space-between}.grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;display:grid}.stat{background:var(--card);border-radius:var(--radius);padding:14px 16px;box-shadow:0 1px 3px #14285a0f}.stat .num{margin-top:4px;font-size:26px;font-weight:700}.stat .label{color:var(--muted);font-size:13px}.tag{background:var(--primary-soft);color:var(--primary);white-space:nowrap;border-radius:99px;padding:2px 8px;font-size:12px;display:inline-block}.tag.ok{background:var(--ok-soft);color:var(--ok)}.tag.warn{background:var(--warn-soft);color:var(--warn)}.tag.bad{background:var(--bad-soft);color:var(--bad)}.tag.gray{color:var(--muted);background:#eef0f4}.error-box{background:var(--bad-soft);color:var(--bad);border-radius:10px;margin:10px 0;padding:10px 14px}.ok-box{background:var(--ok-soft);color:var(--ok);border-radius:10px;margin:10px 0;padding:10px 14px}.hint-box{background:var(--warn-soft);color:#8a5300;border-radius:10px;margin:10px 0;padding:10px 14px;line-height:1.6}.empty{text-align:center;color:var(--muted);padding:40px 10px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:8px 6px}th{color:var(--muted);white-space:nowrap;font-weight:500}.table-wrap{overflow-x:auto}.progress{background:#e7ebf3;border-radius:99px;height:8px;overflow:hidden}.progress>div{background:var(--primary);border-radius:99px;height:100%;transition:width .3s}pre{white-space:pre-wrap;word-break:break-word;background:#f6f8fc;border-radius:8px;padding:10px;font-size:13px}.topnav{z-index:20;border-bottom:1px solid var(--line);padding:8px 16px;padding-top:max(8px, env(safe-area-inset-top));background:#fff;align-items:center;gap:16px;display:flex;position:sticky;top:0}.topnav .brand{color:var(--text);font-size:17px;font-weight:700}.topnav nav{flex:1;gap:4px;display:flex}.topnav nav a{color:var(--muted);border-radius:10px;padding:8px 12px}.topnav nav a.router-link-active{background:var(--primary-soft);color:var(--primary)}.topnav .me{align-items:center;gap:6px;display:flex}.avatar-link{color:var(--text);align-items:center;gap:6px;font-size:20px;display:flex}.avatar-link span{font-size:14px}.tabbar{display:none}@media (width<=640px){.topnav nav{display:none}.topnav{justify-content:space-between}.hide-sm{display:none!important}.tabbar{z-index:20;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom);background:#fff;display:flex;position:fixed;bottom:0;left:0;right:0}.tabbar a{color:var(--muted);flex-direction:column;flex:1;align-items:center;padding:6px 0;font-size:12px;display:flex}.tabbar a span{font-size:22px}.tabbar a.router-link-active{color:var(--primary)}main{padding:12px}}.toast{color:#fff;z-index:100;background:#2b3550;border-radius:12px;max-width:90vw;padding:10px 18px;position:fixed;bottom:96px;left:50%;transform:translate(-50%);box-shadow:0 6px 20px #0003}.toast.error{background:var(--bad)}.toast.ok{background:var(--ok)}.modal-mask{z-index:90;background:#141e3273;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:#fff;border-radius:18px;width:100%;max-width:420px;padding:22px;box-shadow:0 10px 40px #00000040}.modal h3{margin-top:0}.q-stem{word-break:break-word;white-space:pre-wrap;margin:6px 0 18px;font-size:22px;line-height:1.6}@media (width>=768px){.q-stem{font-size:26px}}.q-options{gap:12px;display:grid}.q-options.inline{grid-template-columns:repeat(3,minmax(56px,110px))}.q-opt{text-align:left;border:2px solid var(--line);background:#fff;border-radius:14px;justify-content:flex-start;width:100%;min-width:56px;min-height:56px;padding:12px 16px;font-size:20px}.q-opt .key{background:#eef2fa;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;font-size:15px;font-weight:600;display:inline-flex}.q-opt.selected{border-color:var(--primary);background:var(--primary-soft)}.q-opt.selected .key{background:var(--primary);color:#fff}.q-opt.center{justify-content:center;font-size:26px;font-weight:600}.q-input{border-width:2px;border-radius:14px;width:100%;max-width:360px;min-height:56px;padding:8px 14px;font-size:24px}.q-suffix{margin-left:8px;font-size:22px}.q-pattern{letter-spacing:4px;margin:4px 0 14px;font-family:ui-monospace,Menlo,monospace;font-size:30px}.q-table{max-width:420px;margin-bottom:16px;font-size:18px}.q-table th,.q-table td{border:1px solid var(--line);text-align:center;padding:8px 12px}.q-tokens{flex-wrap:wrap;gap:10px;min-height:60px;margin:10px 0;display:flex}.q-token{border:2px solid var(--line);background:#fff;border-radius:12px;min-width:52px;min-height:52px;padding:6px 14px;font-size:21px}.q-token.placed{background:var(--primary-soft);border-color:var(--primary)}.q-answer-line{border:2px dashed var(--line);border-radius:14px;flex-wrap:wrap;align-items:center;gap:8px;min-height:64px;padding:6px;display:flex}.keypad{grid-template-columns:repeat(4,1fr);gap:8px;max-width:360px;margin-top:12px;display:grid}.keypad button{min-height:56px;font-size:22px}.speak{border-radius:50%;min-width:48px;min-height:48px;padding:0;font-size:22px}.app-root{min-height:100vh}.kid{--bg:#fff7e6;--text:#4a3b2a;--muted:#9a8873;--line:#f1e2c8;--primary:#ff8a3d;--primary-soft:#ffeedc;--ok:#2fb36b;--ok-soft:#e3f8ea;--warn:#f2a900;--warn-soft:#fff4cc;--bad:#f0605a;--bad-soft:#ffe8e6;--radius:24px;color:var(--text);background-color:var(--bg);background-image:radial-gradient(circle at 12px 12px,#ffbe782e 3px,#0000 4px),radial-gradient(circle at 36px 36px,#78c8ff24 3px,#0000 4px);background-size:48px 48px;font-family:Yuanti SC,YouYuan,幼圆,Arial Rounded MT Bold,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans CJK SC,sans-serif}.kid h1{letter-spacing:1px;font-size:26px}.kid .card{background:#fff;border:3px solid #f6e3c4;border-radius:24px;box-shadow:0 6px #f3dcb6}.kid button,.kid .btn{border:2px solid #ecdcc3;border-radius:18px;font-weight:600;transition:transform 80ms,box-shadow 80ms,background .15s;box-shadow:0 4px #e6d3b5}.kid button:active:not(:disabled){transform:translateY(3px);box-shadow:0 1px #e6d3b5}.kid button.primary,.kid .btn.primary{color:#fff;text-shadow:0 1px #0000001f;background:linear-gradient(#ffab5e,#ff7f32);border-color:#f2701f;box-shadow:0 5px #d35f13}.kid button.primary:hover:not(:disabled){background:linear-gradient(#ffb86f,#ff8a3d)}.kid button.primary:active:not(:disabled){box-shadow:0 1px #d35f13}.kid button.link{box-shadow:none;border:none}.kid button.big{border-radius:22px;min-height:60px;font-size:21px}.kid input,.kid select,.kid textarea{border:2px solid #ecdcc3;border-radius:16px}.kid .tag{border-radius:99px;padding:3px 10px;font-weight:600}.kid .stat{border:3px solid #f6e3c4;border-radius:22px;box-shadow:0 5px #f3dcb6}.kid .stat .num{color:#ff7f32}.kid .ok-box,.kid .error-box,.kid .hint-box{border-radius:18px;padding:12px 16px;font-weight:600}.kid .hint-box:before{content:"🦉 "}.kid .progress{background:#f3e6d0;border:2px solid #ecd9ba;height:12px}.kid .progress>div{background:repeating-linear-gradient(45deg,#ffb35c 0 10px,#ff8a3d 10px 20px)}.kid .modal{border:4px solid #ffd9a8;border-radius:28px}.kid .topnav{color:#fff;background:linear-gradient(90deg,#ffb86b,#ff8fa3 55%,#a98bff);border-bottom:none;border-radius:0 0 24px 24px;box-shadow:0 4px #c86e3c40}.kid .topnav .brand{color:#fff;text-shadow:0 2px #0000001f;font-size:19px}.kid .brand-icon{animation:2.8s ease-in-out infinite wiggle;display:inline-block}.kid .topnav nav a{color:#fff;border-radius:16px;font-weight:600}.kid .topnav nav a.router-link-active{color:#ff7f32;background:#fffffff2}.kid .topnav .me .link{color:#fff}.kid .avatar-link{color:#fff;font-weight:600}.kid .avatar-bubble{background:#fff;border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;font-size:24px;display:inline-flex;box-shadow:0 3px #0000001a}@media (width<=640px){.kid .tabbar{border-top:none;border-radius:24px 24px 0 0;box-shadow:0 -4px 14px #c88c3c2e}.kid .tabbar a{font-weight:600}.kid .tabbar a span{transition:transform .2s}.kid .tabbar a.router-link-active{color:#ff7f32}.kid .tabbar a.router-link-active span{transform:scale(1.25)translateY(-2px)}}.kid .q-stem{font-weight:600}.kid .q-opt{border:3px solid #f0e0c6;border-radius:20px;box-shadow:0 4px #ecd9ba}.kid .q-opt .key{color:#fff;width:36px;height:36px;font-size:17px}.kid .q-options .q-opt:nth-child(4n+1) .key{background:#ff7b7b}.kid .q-options .q-opt:nth-child(4n+2) .key{background:#4fb3ff}.kid .q-options .q-opt:nth-child(4n+3) .key{background:#4fcf8a}.kid .q-options .q-opt:nth-child(4n+4) .key{background:#b48cff}.kid .q-opt.selected{background:#fff1e3;border-color:#ff8a3d;transform:scale(1.02);box-shadow:0 4px #ffb680}.kid .q-opt.selected .key{background:#ff8a3d!important}.kid .q-input{border:3px solid #f0e0c6;border-radius:18px}.kid .q-input:focus{border-color:#ff8a3d}.kid .q-token{border:3px solid #f0e0c6;border-radius:16px;box-shadow:0 4px #ecd9ba}.kid .q-token.placed{background:#fff1e3;border-color:#ff8a3d}.kid .q-answer-line{background:#fffaf2;border:3px dashed #f2cc96;border-radius:20px}.kid .speak{background:#e9f6ff;border-color:#bfe3ff;border-radius:50%;box-shadow:0 4px #a9d6f7}@keyframes wiggle{0%,to{transform:rotate(0)}10%{transform:rotate(-12deg)}20%{transform:rotate(10deg)}30%{transform:rotate(0)}}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}@keyframes pop{0%{opacity:0;transform:scale(.4)}70%{transform:scale(1.12)}to{opacity:1;transform:scale(1)}}@keyframes fall{0%{opacity:1;transform:translateY(-10vh)rotate(0)}to{opacity:.8;transform:translateY(105vh)rotate(540deg)}}@media (prefers-reduced-motion:reduce){.kid *,.kid :before{transition:none!important;animation:none!important}}