:root{--bg:#eef7ff;--bg2:#fff7e6;--card:#fff;--ink:#2b2d42;--ink-soft:#6b7089;--line:#e3e8f2;--primary:#4f7cff;--primary-dark:#3a5fd6;--good:#2bb673;--bad:#ff6b6b;--warn:#ffb020;--think:#fff4cc;--act:#e3f0ff;--observe:#e6f8ee;--radius:22px;--shadow:0 6px 20px #3c508c1f;color:var(--ink);font-family:PingFang SC,Microsoft YaHei,HarmonyOS Sans SC,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:18px}*{box-sizing:border-box}body{background:linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%) fixed;min-height:100vh;margin:0}button{font:inherit;cursor:pointer}input,textarea,select{font:inherit;color:inherit}h1,h2,h3{margin:0 0 12px}.page{max-width:1080px;margin:0 auto;padding:16px 16px 48px}.card{background:var(--card);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}.col{flex-direction:column;gap:12px;display:flex}.grow{flex:1}.muted{color:var(--ink-soft)}.center{text-align:center}.big-emoji{font-size:64px;line-height:1}.btn{background:var(--primary);color:#fff;box-shadow:0 4px 0 var(--primary-dark);border:none;border-radius:999px;padding:12px 24px;font-size:18px;font-weight:600;transition:transform 80ms}.btn:active{box-shadow:0 1px 0 var(--primary-dark);transform:translateY(3px)}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.secondary{color:var(--primary);background:#fff;border:2px solid #cdd8f5;box-shadow:0 4px #cdd8f5}.btn.good{background:var(--good);box-shadow:0 4px #1d8a56}.btn.small{padding:6px 14px;font-size:15px}.btn.ghost{color:var(--ink-soft);box-shadow:none;background:0 0;padding:6px 10px}.icon-btn{width:40px;height:40px;box-shadow:var(--shadow);background:#fff;border:none;border-radius:50%;flex:none;justify-content:center;align-items:center;font-size:20px;display:inline-flex}.topbar{align-items:center;gap:12px;max-width:1080px;margin:0 auto;padding:10px 16px;display:flex}.topbar .who{align-items:center;gap:8px;min-width:0;font-weight:700;display:flex}.topbar .who span:last-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.topbar .who .av{flex:none}@media (max-width:360px){.topbar{gap:6px;padding:8px 10px}.topbar .who{flex:none}.topbar .who span:last-child{display:none}.topbar .icon-btn{width:34px;height:34px;font-size:17px}.topbar .pill{padding:6px 10px}}@media (max-width:480px){.topbar{gap:8px;padding:8px 12px}.hide-sm{display:none}}a.tap{padding:10px 6px;display:inline-block}input[type=checkbox]{vertical-align:middle;width:22px;height:22px}.topbar .who .av{font-size:30px}.pill{box-shadow:var(--shadow);white-space:nowrap;background:#fff;border-radius:999px;padding:6px 14px;font-size:15px}.profiles{grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:16px;display:grid}.profile-card{border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;border:none;padding:20px 10px;font-size:20px;font-weight:700}.profile-card .av{margin-bottom:8px;font-size:64px;display:block}.picker{flex-wrap:wrap;gap:8px;display:flex}.picker button{background:#f3f6fc;border:3px solid #0000;border-radius:16px;width:54px;height:54px;font-size:28px}.picker button.on{border-color:var(--primary);background:#e8efff}.text-input{border:2px solid var(--line);background:#fff;border-radius:14px;width:100%;padding:10px 14px;font-size:18px}.text-input:focus{border-color:var(--primary);outline:none}.lesson-node{width:120px;color:var(--ink);background:0 0;border:none;flex-direction:column;align-items:center;gap:6px;padding:0;display:flex}.lesson-node .circle{background:var(--c);border-radius:50%;justify-content:center;align-items:center;width:84px;height:84px;font-size:40px;display:flex;position:relative;box-shadow:0 6px #00000026}.lesson-node.locked .circle{filter:grayscale();background:#d5d9e3}.lesson-node.locked{cursor:not-allowed}.lesson-node.next .circle{animation:1.4s infinite bounce}.lesson-node .t{text-align:center;font-size:15px;font-weight:600}.stars{letter-spacing:1px;min-height:18px;font-size:15px}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.progress-bar{background:#fff;border-radius:999px;height:14px;overflow:hidden;box-shadow:inset 0 1px 3px #0000001a}.progress-bar>div{background:linear-gradient(90deg, #6fd3ff, var(--primary));height:100%;transition:width .3s}@keyframes pop{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.question{align-items:center;gap:8px;margin-bottom:18px;font-size:24px;font-weight:700;display:flex}.options{gap:12px;display:grid}.option{border:3px solid var(--line);text-align:left;background:#fff;border-radius:18px;padding:14px 18px;font-size:20px}.option:hover{border-color:#b9c8f5}.option.right{border-color:var(--good);background:#e9f9f0}.option.wrong{border-color:var(--bad);background:#fff0f0;animation:.35s shake}@keyframes shake{25%{transform:translate(-6px)}75%{transform:translate(6px)}}.explain{background:#f0f7ff;border-radius:16px;margin-top:16px;padding:14px 18px;font-size:19px}.badges{grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:14px;display:grid}.badge{border-radius:var(--radius);box-shadow:var(--shadow);text-align:center;background:#fff;padding:18px 10px}.badge .e{font-size:56px}.badge.locked{opacity:.45;filter:grayscale()}.badge .n{margin-top:6px;font-weight:700}.badge .d{color:var(--ink-soft);font-size:14px}.celebrate{text-align:center;padding:30px 10px}.celebrate .stars-big{letter-spacing:8px;font-size:64px;animation:.5s pop}.confetti{pointer-events:none;z-index:50;position:fixed;top:0;bottom:0;left:0;right:0;overflow:hidden}.confetti span{font-size:28px;animation:linear forwards fall;position:absolute;top:-40px}@keyframes fall{to{transform:translateY(110vh)rotate(540deg)}}.overlay{z-index:100;background:#1e28508c;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;top:0;bottom:0;left:0;right:0}.overlay .card{text-align:center;max-width:460px}@media (max-width:600px){.form-row{grid-template-columns:1fr}}table.log tr.blocked td{background:#fff3e0}.parent{font-size:16px}.tabs{flex-wrap:wrap;gap:6px;margin-bottom:16px;display:flex}.tabs button{box-shadow:var(--shadow);background:#fff;border:none;border-radius:999px;padding:8px 16px}.tabs button.on{background:var(--ink);color:#fff}.form-row{grid-template-columns:140px 1fr;align-items:center;gap:10px;margin-bottom:12px;display:grid}@media (max-width:600px){.form-row{grid-template-columns:1fr}}table.log{border-collapse:collapse;width:100%;font-size:15px}table.log td,table.log th{border-bottom:1px solid var(--line);text-align:left;vertical-align:top;padding:8px 6px}.kv{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.kv>div{background:#f6f8fc;border-radius:14px;padding:12px}.kv b{font-size:24px;display:block}.notice{background:#fff8e1;border:1px solid #ffe08a;border-radius:12px;padding:10px 14px}.error{color:var(--bad)}.guide p,.guide li{line-height:1.8}.guide h2{margin-top:22px;font-size:21px}.guide table.log{display:block;overflow-x:auto}hr{border:none;border-top:1px solid var(--line);width:100%}.small{font-size:14px}.good-text{color:var(--good);font-weight:700}.page.wide{max-width:1280px}.target-bar{box-shadow:var(--shadow);background:#fff;border-radius:16px;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;padding:10px 16px;display:flex}.daily{border:3px solid #ffe08a;margin-bottom:18px}.daily h2{margin-bottom:8px}.daily-items{flex-wrap:wrap;gap:20px;margin-bottom:14px;font-size:19px;display:flex}.daily-items .done{color:var(--good)}.tiles{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin-bottom:18px;display:grid}.tile{border-radius:var(--radius);color:#fff;text-align:left;box-shadow:var(--shadow);border:none;padding:18px;font-size:21px;font-weight:700}.tile:disabled{opacity:.6;cursor:default}.tile .e{font-size:42px;display:block}.tile small{opacity:.95;margin-top:4px;font-size:15px;font-weight:400;display:block}.badge-row{flex-wrap:wrap;gap:8px;margin-top:8px;font-size:34px;display:flex}.skill-bars{flex-direction:column;gap:10px;display:flex}.skill{grid-template-columns:150px 1fr 90px;align-items:center;gap:10px;display:grid}@media (max-width:480px){.skill{grid-template-columns:110px 1fr 60px;font-size:15px}.tiles{grid-template-columns:1fr 1fr;gap:10px}.tile{padding:12px;font-size:17px}.tile .e{font-size:32px}.tile small{font-size:13px}}.chapter{border-radius:var(--radius);box-shadow:var(--shadow);border-left:10px solid var(--c);background:#fff;margin-bottom:18px;padding:18px 20px}.chapter h2{margin-bottom:2px;font-size:21px}.chapter .lessons{margin-top:12px}.stars{color:#ffb020}.stars .dim{color:#dfe3ec}.level-head{flex-direction:column;align-items:flex-start;gap:8px;margin-bottom:12px;display:flex}.level-head h1,.level-head h2{flex-wrap:wrap;align-items:center;gap:10px;margin:0;font-size:26px;display:flex}.concept{color:var(--primary-dark);background:#e8efff;border-radius:999px;padding:3px 12px;font-size:14px;font-weight:600}.goal{background:#fffbea;border:2px solid #ffe08a;border-radius:16px;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 14px;font-size:19px;display:flex}.tip{background:#eef7ff;border-radius:14px;padding:10px 14px}.bench{grid-template-columns:minmax(300px,440px) 1fr;align-items:start;gap:16px;display:grid}.bench-left{flex-direction:column;gap:10px;min-width:0;display:flex}.bench-right{min-width:0}.stage-box{box-shadow:var(--shadow);background:#fff;border-radius:18px;padding:10px}.robot-stage,.pen-stage{width:100%;height:auto;max-height:460px;display:block}.pen-stage{border:1px solid var(--line);border-radius:10px}.robot-stage .robot{transition:transform .22s}.map-tabs{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.map-tabs button{border:2px solid var(--line);background:#fff;border-radius:999px;padding:5px 14px;font-size:15px}.map-tabs button.on{border-color:var(--primary);background:#e8efff;font-weight:700}.controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.speed{border:2px solid var(--line);background:#fff;border-radius:999px;padding:5px 10px;font-size:15px}.bad-btn{background:var(--bad);box-shadow:0 4px #d64545}.bench-msg{border-radius:14px;padding:12px 14px;font-size:18px;animation:.25s pop}.bench-msg.ok{border:2px solid var(--good);background:#e9f9f0}.bench-msg.bad{border:2px solid var(--bad);background:#fff0f0}.bench-msg.info{background:#f0f7ff;border:2px solid #cdd8f5}.bench-tools{align-items:center;gap:8px;margin-bottom:8px;display:flex}.blockly-box{height:560px;box-shadow:var(--shadow);background:#fff;border-radius:18px;overflow:hidden}@media (max-width:860px){.bench{grid-template-columns:1fr}.blockly-box{height:460px}}.cat-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.cat-card{border-radius:var(--radius);box-shadow:var(--shadow);text-align:left;background:#fff;border:none;flex-direction:column;gap:4px;padding:18px;font-size:18px;display:flex}.cat-card .e{font-size:40px}.question{align-items:flex-start;margin-bottom:4px;font-size:21px;line-height:1.6}.options.tf{grid-template-columns:1fr 1fr}.option b{color:var(--primary);margin-right:6px}.option.picked{border-color:var(--primary);background:#e8efff}.option:disabled{cursor:default;color:inherit}.explain.ok{background:#e9f9f0}.explain.no{background:#fff4ec}.scratch-code{border:1px solid var(--line);background:#f9f9fb;border-radius:14px;padding:8px;overflow-x:auto}.code-fallback{white-space:pre-wrap;background:#f6f8fc;border-radius:12px;padding:12px}.rules li{margin-bottom:4px;line-height:1.8}.exam-bar{box-shadow:var(--shadow);z-index:10;background:#fff;border-radius:16px;align-items:center;gap:14px;margin-bottom:10px;padding:10px 16px;display:flex;position:-webkit-sticky;position:sticky;top:6px}.clock{font-variant-numeric:tabular-nums;font-size:22px;font-weight:800}.clock.hurry{color:var(--bad)}.exam-nav{flex-wrap:wrap;gap:6px;margin-bottom:14px;display:flex}.exam-nav button{border:2px solid var(--line);background:#fff;border-radius:12px;width:40px;height:40px;font-weight:700}.exam-nav button.done{background:#e8efff;border-color:#b9c8f5}.exam-nav button.on{border-color:var(--primary);box-shadow:0 0 0 3px #cdd8f5}.exam-nav button.wide-btn{width:auto;padding:0 12px}.report-head .score-big{color:var(--primary-dark);font-size:72px;font-weight:900;line-height:1}.report-head .score-big small{font-size:24px}.review{border-bottom:1px solid var(--line);flex-direction:column;gap:4px;padding:10px 0;display:flex}.trend{width:100%;max-width:420px;height:auto;margin:6px 0 10px;display:block}.work-grid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:14px;display:grid}.work-card{border-radius:var(--radius);box-shadow:var(--shadow);text-align:left;background:#fff;border:none;flex-direction:column;gap:6px;padding:16px;font-size:18px;display:flex}.work-card .e{font-size:44px}.step-check{cursor:pointer;background:#f6f8fc;border-radius:14px;align-items:flex-start;gap:10px;padding:10px 12px;line-height:1.6;display:flex}.step-check.on{background:#e9f9f0}.step-check input{flex:none;margin-top:4px}.report-grid{grid-template-columns:1fr 1fr;gap:18px;display:grid}@media (max-width:760px){.report-grid{grid-template-columns:1fr}}.day-bars{align-items:flex-end;gap:4px;height:120px;display:flex}.day-bars>div{flex-direction:column;flex:1;justify-content:flex-end;align-items:center;height:100%;display:flex}.day-bars span{background:linear-gradient(#6fd3ff, var(--primary));border-radius:6px 6px 0 0;width:100%;min-height:2px}.day-bars small{color:var(--ink-soft);font-size:11px}.chapter-progress{grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:8px;display:grid}.chapter-progress>div{background:#f6f8fc;border-radius:12px;justify-content:space-between;gap:8px;padding:8px 12px;font-size:15px;display:flex}.chapter-progress>div.full{background:#e9f9f0}.chapter-progress>div.part{background:#fffbea}details summary{cursor:pointer;padding:6px 0}.stars-big .stars{letter-spacing:6px;font-size:56px}