:root{color-scheme:dark;--bg:#161616;--panel:#222;--line:#35463c;--ink:#f4f7f5;--muted:#a5b2ab;--accent:#00e676}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 'Segoe UI','Malgun Gothic',sans-serif}button,input,select,textarea{font:inherit}button,select{cursor:pointer}button{background:#25382d;color:var(--ink);border:1px solid #475e51;border-radius:5px;padding:9px 13px;font-size:14px}button:hover{background:#284335}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #72f0ae;outline-offset:3px}.primary{background:var(--accent);color:#1c1714;border-color:var(--accent);font-weight:700}.primary:hover{background:#37f39a}a{color:inherit}.sim-header{padding:24px 30px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:28px}.sim-header>a{font-size:27px;font-weight:900;text-decoration:none;letter-spacing:-1px}.sim-header h1{font-size:25px;margin:0}.sim-header p{color:var(--muted);margin:3px 0;font-size:14px}.mode{margin-left:auto;color:#98dab8;font-size:14px}#missions{display:flex;gap:8px;padding:16px 24px;overflow:auto;border-bottom:1px solid var(--line)}#missions button{white-space:nowrap}#missions button.active{border-color:var(--accent);background:#183728}main{display:grid;grid-template-columns:minmax(0,1fr) 320px}.workbench{min-width:0}.toolbar{display:flex;flex-wrap:wrap;gap:8px;padding:16px 20px;background:#18241e}.toolbar label{margin-left:auto;font-size:14px;display:flex;align-items:center;gap:8px}select{background:#25382d;color:var(--ink);padding:7px;border:1px solid var(--line)}.workspace{display:grid;grid-template-columns:180px minmax(0,1fr)}.palette{padding:20px 14px;background:#141d18;border-right:1px solid var(--line)}h2{font-size:18px;margin:0 0 10px}.palette p{font-size:14px;color:var(--muted)}#palette{display:grid;gap:9px}#palette button{text-align:left;font-size:14px;padding:10px}.canvas-area{min-width:0}#notice{min-height:64px;padding:12px 18px;color:#bdebd2;background:#1b2d24;font-size:14px;border-bottom:1px solid var(--line)}#notice.error{color:#ffd5d5;background:#472525}#viewport{height:470px;overflow:auto;position:relative;background-color:#111;background-image:radial-gradient(#3b3935 1px,transparent 1px);background-size:22px 22px;overscroll-behavior:contain}#board{width:1480px;height:1000px;position:relative;transform-origin:top left}#wires{position:absolute;inset:0;width:1480px;height:1000px;overflow:visible;pointer-events:none}.node{position:absolute;width:226px;background:#1b2220;border:1px solid #475e51;border-radius:9px;box-shadow:0 8px 18px #0006;z-index:2;overflow:hidden}.node.selected{outline:2px solid var(--accent)}.node.running{outline:3px solid #b5e49a}.node header{padding:0;background:#2d3d34;border-bottom:1px solid #475e51;display:flex;align-items:center}.node .title{border:0;background:none;flex:1;padding:10px;text-align:left;cursor:grab;touch-action:none;border-radius:0;font-weight:700;color:#fff;line-height:1.4}.node .remove{font-size:18px;background:none;border:0;padding:5px 10px;color:#ddd}.ports{padding:9px 0}.port-row{display:flex;justify-content:space-between;min-height:33px;gap:5px}.port{display:flex;align-items:center;gap:6px;padding:4px 8px;background:none!important;border:0;font-size:12px;min-height:33px;border-radius:0;color:#eee}.port.out{margin-left:auto;flex-direction:row-reverse}.dot{width:13px;height:13px;min-width:13px;border:2px solid #d7edff;border-radius:50%;background:var(--port-color,#9cbdce)}.port.chosen{background:#205136!important}.node-fields{padding:0 11px 13px;display:grid;gap:8px}.node-fields label{font-size:13px;display:grid;gap:3px;color:#bdcbc2}.node-fields input,.node-fields select,.node-fields textarea{width:100%;min-width:0;background:#171616;color:#fff;border:1px solid #475e51;border-radius:3px;padding:5px;font-size:14px}.node-fields textarea{height:62px;resize:vertical}.node-subtitle{font-size:12px;color:#a5b2ab;padding:0 11px 10px;margin:0}.canvas-help{padding:10px 15px;font-size:13px;color:var(--muted);border-bottom:1px solid var(--line)}.connections{padding:10px 20px;border-bottom:1px solid var(--line);font-size:14px}.connections p{display:flex;justify-content:space-between;gap:12px}.connections button{padding:3px 8px}.results{display:grid;grid-template-columns:1fr 1fr;gap:28px;padding:24px}.results p{font-size:14px;color:var(--muted)}#output{max-width:100%;height:auto;border:1px solid var(--line);background:#111}#trace{font-size:14px;line-height:1.8}#trace ol{padding-left:20px}#inspector{border-left:1px solid var(--line);padding-left:25px}#inspector h3{font-size:17px}#inspector dl{font-size:14px}.coach{padding:24px;border-left:1px solid var(--line);background:#18241e}.eyebrow{font-size:12px;letter-spacing:.12em;color:#62e7a5;margin:0 0 14px}.coach>h2{font-size:23px;line-height:1.5}.coach>p{font-size:15px;color:#bdcbc2}.coach ol{padding-left:23px;font-size:15px}.coach li{padding:8px 0;color:#d4ded8}.coach li.done{color:#abd8a5}.coach li.current{color:#72f0ae;font-weight:700}#hint-text{font-size:14px;color:#9adeb9}#completion{padding:16px;background:#2a3927;border:1px solid #6f9466;margin:20px 0}#completion h3{font-size:17px;margin:0}#completion p{font-size:14px}details{margin:18px 0}summary{cursor:pointer;font-size:15px}#real-comfy{font-size:14px;color:#bdcbc2;margin-top:12px}dt{font-weight:700;color:#d2e9dc}dd{margin:4px 0 15px;color:#bdcbc2;font-size:14px}.disclaimer{border-top:1px solid var(--line);padding-top:18px;font-size:13px!important;color:#a5b2ab!important}footer{padding:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px;font-size:13px;color:var(--muted)}.move-controls{display:flex;gap:5px}.move-controls button{padding:6px 10px}@media(max-width:1100px){main{grid-template-columns:minmax(0,1fr) 280px}.workspace{grid-template-columns:145px 1fr}.coach{padding:18px}.results{grid-template-columns:1fr}#inspector{border-left:0;border-top:1px solid var(--line);padding:20px 0 0}.toolbar label{margin-left:0}}@media(max-width:760px){.sim-header{padding:18px;gap:15px;flex-wrap:wrap}.sim-header>a{font-size:24px}.sim-header h1{font-size:21px}.mode{display:none}main{display:flex;flex-direction:column}.coach{order:-1;border-left:0;border-bottom:1px solid var(--line);padding:20px}.coach ol{display:grid;grid-template-columns:1fr 1fr;gap:0 25px;margin:10px 0}.coach li{font-size:14px}.workspace{grid-template-columns:1fr}.palette{padding:12px 16px}.palette h2,.palette>p{display:none}#palette{display:flex;overflow:auto}#palette button{white-space:nowrap}.toolbar{padding:12px}#viewport{height:470px}.results{padding:20px}.canvas-help{font-size:13px}.sim-header p{font-size:14px}#missions{padding:12px}.node 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.port,.node-fields label{font-size:14px}.port{touch-action:none}.node-subtitle{font-size:12px}

.learning-modes{padding:18px 24px;border-bottom:1px solid var(--line);background:#18241e}.learning-modes>div{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.learning-modes button.active{background:#00e676;color:#101413}.learning-modes p{margin:10px 0;font-size:15px}#mastery{margin-left:auto;color:#d5e3c7;font-size:14px}#demo-caption{max-width:1000px;color:#9adeb9}.data-inspection{border-top:1px solid var(--line);padding-top:20px;grid-column:1/-1}#data-canvas{max-width:100%;height:auto;border:1px solid var(--line)}#data-info{white-space:pre-wrap;overflow-wrap:anywhere}.real-package{padding:35px;background:#1b2d24;border-top:1px solid #475e51}.real-package a{display:inline-block;padding:12px 20px;background:#00e676;color:#101413;font-weight:700;text-decoration:none}.real-package p{font-size:15px;max-width:900px}body[data-learn-mode=challenge] #hint-text{display:none}#demo-caption:empty{display:none}@media(max-width:760px){#mastery{margin:0}.learning-modes{padding:18px}.real-package{padding:24px}}