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10px;font-size:12px;line-height:16px;position:relative;box-shadow:0 1px 2px #0f141a14,0 6px 16px #0f141a1a}.node-label:after{content:"";background:inherit;border-bottom:1px solid #0f141a14;border-right:1px solid #0f141a14;width:8px;height:8px;position:absolute;bottom:-5px;left:50%;transform:translate(-50%)rotate(45deg)}.node-label .nl-name:before{content:"";background:var(--accent);vertical-align:0;border-radius:50%;width:8px;height:8px;margin-right:6px;display:inline-block}.node-label.compact .nl-line,.node-label.compact .nl-badges{display:none}.node-label.compact{padding:2px 8px;font-size:11px}.node-label.faded,.edge-label.faded{opacity:.18}.node-label.selected{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent), 0 6px 16px 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h2{font-size:20px;font-weight:700}.modal-kicker{color:var(--muted);flex-wrap:wrap;align-items:center;gap:6px;font-size:12px;display:flex}.story{color:var(--text-2);margin:0;font-size:15px;line-height:22px}.mission{background:var(--accent-soft);border:1px solid var(--border);border-radius:var(--radius-sm);padding:10px 14px}details summary{cursor:pointer;color:var(--accent);font-weight:700}details p{margin:6px 0 0}.result-head{justify-content:space-between;align-items:center;display:flex}.stars{letter-spacing:2px;font-size:24px}.stars .on{color:var(--text)}.stars .off{color:#d1d5db}.level-card .stars{font-size:14px}.result-goals{flex-direction:column;gap:8px;margin:0;padding:0;list-style:none;display:flex}.result-goals li{grid-template-columns:18px 1fr;gap:4px;display:grid}.why{color:var(--bad);font-size:13px}.lesson{background:var(--ok-soft);border-radius:var(--radius-sm);border:1px solid #c8e6c9;padding:10px 14px}.lesson h3{color:var(--ok);margin-bottom:6px;font-size:14px}.lesson 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8px}.auth-modal{gap:16px;width:min(440px,100%)}.auth-form{flex-direction:column;gap:14px;display:flex}.auth-lead{margin:0}.auth-switch{text-align:center;color:var(--text-2);margin:0;font-size:13px}.form-field{flex-direction:column;gap:4px;display:flex}.form-field input[type=text],.form-field input[type=email],.form-field input[type=password]{width:100%;font:inherit;color:var(--text);background:var(--panel);border:1px solid var(--input-border);border-radius:var(--radius-sm);min-height:32px;padding:5px 10px}.form-field input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}.form-field.has-error input{border-color:var(--bad);border-left-width:4px}.field-error{color:var(--bad);font-size:12px;line-height:16px}.field-error:before{content:"⚠ "}.field-ok{color:var(--ok);margin:4px 0 0;font-size:12px}.field-ok:before{content:"✓ "}.password-input{display:block;position:relative}.password-input input{padding-right:76px!important}.password-input 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14px;font-size:13px;line-height:18px}.alert-info{border-color:var(--accent);background:var(--accent-soft)}.alert-success{border-color:var(--ok);background:var(--ok-soft)}.alert-warning{background:var(--warn-soft);border-color:#d8a700}.alert-error{border-color:var(--bad);background:var(--bad-soft)}.avatar{background:var(--accent);color:#fff;border-radius:50%;flex:none;place-items:center;width:24px;height:24px;font-size:11px;font-weight:700;display:inline-grid}.avatar.large{width:44px;height:44px;font-size:17px}.account-btn{align-items:center;gap:8px;display:inline-flex;padding-left:4px!important}.account-slot{width:72px;display:inline-block}.account{flex-direction:column;gap:0;display:flex}.account-head{align-items:center;gap:14px;padding-bottom:14px;display:flex}.account-name{font-size:16px;font-weight:700}.account-section{border-top:1px solid var(--border);gap:12px;padding:14px 0}.account-section.row{gap:16px}.account>.row.end{border-top:1px solid var(--border);padding-top:14px}.danger-zone .field-label{color:var(--bad)}.menu-shell{flex-direction:column;min-height:100%;display:flex}.console-nav{background:var(--nav);height:48px;color:var(--nav-text);border-bottom:1px solid var(--nav-border);flex:none;align-items:center;gap:12px;padding:0 20px;display:flex}.console-nav .brand{align-items:center;gap:10px;font-size:16px;font-weight:700;display:flex}.console-nav .spacer{flex:1}.console-nav .btn{color:var(--nav-text);background:0 0;border:1px solid #0000;padding:3px 12px;font-weight:400}.console-nav .btn:hover:not(:disabled){background:var(--nav-hover);color:var(--accent-hover);border-color:#0000}.console-nav .star-count{color:var(--nav-text);font-variant-numeric:tabular-nums;font-weight:700}.menu{flex-direction:column;flex:1;gap:28px;width:100%;max-width:1080px;margin:0 auto;padding:28px 24px 48px;display:flex}.menu-hero{flex-direction:column;gap:4px;display:flex}.menu-hero h1{font-size:28px;font-weight:700;line-height:36px}.menu-hero p{color:var(--text-2);max-width:640px;margin:0;font-size:16px;line-height:24px}.logo{align-items:center;gap:3px;display:flex}.cube{border-radius:2px;width:9px;height:18px}.cube.c1{background:#111}.cube.c2{background:#6b6b6b}.cube.c3{background:#bdbdbd}.track{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 20px 20px}.track h2{font-size:18px;font-weight:700}.track>p{margin:2px 0 14px}.level-grid{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;display:grid}.level-card{text-align:left;border-radius:var(--radius-sm);border:1px solid var(--border-strong);background:var(--panel);cursor:pointer;grid-template-rows:auto auto auto;grid-template-columns:auto 1fr;gap:2px 10px;padding:12px 14px;transition:border-color .12s,background .12s;display:grid}.level-card:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.level-card.done{border-left:3px solid var(--ok)}.level-card.locked{background:var(--panel-2);border-color:var(--border);color:var(--muted);cursor:not-allowed}.level-card.needs-account{cursor:pointer}.level-card.needs-account:hover:not(:disabled){border-color:var(--accent);background:var(--panel)}.lock-tag{color:var(--accent);font-size:12px;font-weight:700}.guest-banner{border:2px solid var(--accent);background:var(--accent-soft);border-radius:12px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px 20px;margin-bottom:24px;padding:12px 16px;font-size:14px;line-height:20px;display:flex}.guest-banner>div:first-child{flex:320px}.sandbox-limit{color:var(--muted);margin:8px 0 0}.lc-num{color:var(--border-strong);font-variant-numeric:tabular-nums;grid-row:span 3;font-size:18px;font-weight:700}.lc-title{font-weight:700}.level-card:not(.locked) .lc-title{color:var(--accent)}.lc-concept{color:var(--muted);font-size:12px;line-height:16px}.lc-stars{margin-top:4px}.menu-footer{text-align:center;margin-top:auto}@media (width<=1500px){.level-tag,.topbar .concept-chip{display:none}}@media (width<=1250px){.level-screen{grid-template-columns:230px 1fr 300px}.topbar{flex-wrap:wrap}.topbar .actions{border-left:0;justify-content:flex-end;width:100%}}@media (width<=900px){.level-screen{grid-template:"top""stage"60vh"right""left""bottom"/1fr;height:auto;min-height:100%}.left,.right{border:0;overflow:visible}.topbar .controls{margin-left:0}.legend{display:none}}@supports (height:100dvh){html,body,#app{height:100dvh}}body{overscroll-behavior:none;-webkit-tap-highlight-color:transparent}.stage{-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}@media (pointer:coarse){.btn,.palette-item,.segmented button,.tabs button,.quiz-option{min-height:44px}.btn.tiny{min-height:36px}input,select,textarea{font-size:16px}}@media (width<=600px){.modal-backdrop{padding:8px}.modal{max-height:94dvh;padding:16px}}.touch-actions{z-index:4;gap:8px;display:flex;position:absolute;top:46px;left:50%;transform:translate(-50%)}.touch-actions .btn{box-shadow:var(--shadow);white-space:nowrap}.recenter-btn{z-index:4;background:var(--panel);min-width:44px;min-height:44px;box-shadow:var(--shadow);position:absolute;bottom:10px;left:10px}.rotate-hint{left:8px;right:8px;top:max(8px, env(safe-area-inset-top));z-index:60;border-radius:var(--radius);background:var(--nav-2);color:#fff;align-items:center;gap:10px;padding:10px 12px;font-size:13px;line-height:18px;display:flex;position:fixed;box-shadow:0 4px 20px #0000004d}.rotate-hint.on-level{top:56px}.rotate-hint .btn{color:var(--text);background:#fff;border-color:#fff;flex:none}.rotate-icon{font-size:24px;line-height:1}.level-screen.compact-level{height:100dvh;min-height:0;padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);grid-template:"top""stage"minmax(0,1fr)"sheet"/minmax(0,1fr)}.compact-level .legend{display:none}.topbar.compact{flex-wrap:nowrap;gap:6px;padding:4px 8px;position:relative}.topbar.compact h1{flex:auto;font-size:14px}.topbar.compact .controls{gap:4px;margin-left:0}.btn.icon{min-width:44px;padding-left:0;padding-right:0}.topbar.compact .btn{min-height:40px;padding:3px 10px}.menu-scrim{z-index:29;background:0 0;border:0;position:fixed;inset:0}.more-menu{z-index:30;background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);flex-direction:column;min-width:220px;padding:6px;display:flex;position:absolute;top:100%;right:8px;box-shadow:0 8px 30px #0003}.more-menu .btn{text-align:left;justify-content:flex-start;width:100%}.more-account{border-top:1px solid var(--border);margin-top:4px;padding-top:4px}.sheet{background:var(--panel);border-top:1px solid var(--border);min-height:0;padding-bottom:env(safe-area-inset-bottom);flex-direction:column;grid-area:sheet;display:flex}.sheet-bar{flex:none;display:flex}.sheet-bar button{min-height:44px;color:var(--text-2);cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;flex:1 1 0;padding:0 6px;font-weight:700}.sheet-bar button.active{color:var(--text);border-bottom-color:var(--accent)}.sheet-bar .sheet-grow{flex:0 0 48px;font-size:18px}.sheet-body{overscroll-behavior:contain;border-top:1px solid var(--border);background:var(--bg);flex-direction:column;gap:12px;padding:12px;display:flex;overflow-y:auto}.sheet-half .sheet-body{height:40dvh}.sheet-full .sheet-body{height:70dvh}@media (orientation:landscape){.level-screen.compact-level{grid-template:"top top""stage sheet"minmax(0,1fr)/minmax(0,1fr) auto}.sheet{border-top:0;border-left:1px solid var(--border);padding-bottom:0;padding-right:env(safe-area-inset-right);width:min(44vw,360px)}.sheet-full{width:min(70vw,600px)}.sheet-half .sheet-body,.sheet-full .sheet-body{flex:auto;height:auto}.sheet-peek{right:max(8px, env(safe-area-inset-right));z-index:5;border:1px solid var(--border);border-radius:var(--radius);width:auto;box-shadow:var(--shadow);position:fixed;bottom:8px;overflow:hidden}.sheet-peek .sheet-bar{flex-direction:column}.sheet-peek .sheet-bar button{padding:0 14px}.sheet-peek .sheet-grow{display:none}}@media (width<=600px){.console-nav{height:auto;min-height:48px;padding-top:4px;padding-bottom:4px;padding-left:max(12px, env(safe-area-inset-left));padding-right:max(12px, env(safe-area-inset-right));flex-wrap:wrap;gap:4px 8px}.console-nav .star-count{white-space:nowrap}.console-nav .btn{padding-left:10px;padding-right:10px}}.google-btn{color:#1f1f1f;background:#fff;border:1px solid #747775;justify-content:center;align-items:center;gap:10px;font-weight:500;display:inline-flex}.google-btn:hover:not(:disabled){color:#1f1f1f;background:#f8f9fa;border-color:#1f1f1f}.auth-or{color:var(--muted);align-items:center;gap:10px;font-size:12px;display:flex}.auth-or:before,.auth-or:after{content:"";background:var(--border);flex:1;height:1px}