#gj-app{--blue:#2c4f74;--pink:#466461;--ink:#1a1c1e;--muted:#43474e;--bg:#f4f3f7;--card:#fff;--line:#c3c6cf;--code-bg:#10385c;--code-fg:#eeedf1;--green:#466461;--amber:#e3d1ac;--radius:12px;--shadow:0 8px 24px #0050781a;--font:"Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;--mono:"Consolas","SF Mono",Monaco,"Courier New",monospace;all:initial;box-sizing:border-box;width:100%;font-family:var(--font);color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased;border-radius:16px;padding:16px;line-height:1.55;display:block}#gj-app *{box-sizing:border-box}#gj-app h1,#gj-app h2,#gj-app h3,#gj-app h4,#gj-app p{margin:0 0 .5em}#gj-app strong{color:var(--ink)}#gj-app :focus-visible{outline:3px solid var(--pink);outline-offset:2px;border-radius:8px}#gj-app .hero{background:linear-gradient(120deg,var(--blue),var(--pink));color:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 22px 20px;position:relative;overflow:hidden}#gj-app .hero:after{content:"( ) → ( ) → ( )";font-family:var(--mono);color:#ffffff1f;letter-spacing:-4px;white-space:nowrap;font-size:64px;font-weight:700;position:absolute;bottom:-14px;right:-6px}#gj-app .eyebrow{letter-spacing:2px;text-transform:uppercase;opacity:.9;font-size:12px;font-weight:700}#gj-app .hero h1{margin:.15em 0;font-size:34px;font-weight:800;line-height:1.05}#gj-app .teacher{backdrop-filter:blur(2px);background:#ffffff2e;border-radius:999px;align-items:center;gap:8px;margin-top:8px;padding:6px 12px;font-size:14px;font-weight:700;display:inline-flex}#gj-app .teacher .face{font-size:18px}#gj-app .tabs{flex-wrap:wrap;gap:8px;margin:16px 0;display:flex}#gj-app .tab{appearance:none;cursor:pointer;border:2px solid var(--line);background:var(--card);color:var(--ink);font-family:var(--font);border-radius:999px;padding:9px 14px;font-size:14px;font-weight:700;transition:transform .12s,background .12s,color .12s,border-color .12s}#gj-app .tab:hover{border-color:var(--pink);transform:translateY(-1px)}#gj-app .tab[aria-selected=true]{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 6px 14px #2c4f7459}#gj-app .panel{animation:.25s gj-fade;display:none}#gj-app .panel.active{display:block}@keyframes gj-fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}#gj-app .card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin:14px 0;padding:16px 18px}#gj-app .card h2{color:var(--blue);align-items:center;gap:8px;font-size:20px;display:flex}#gj-app .card h3{color:var(--ink);font-size:16px}#gj-app .tag{background:var(--pink);color:#fff;letter-spacing:.5px;text-transform:uppercase;vertical-align:middle;border-radius:999px;padding:3px 9px;font-size:11px;font-weight:700;display:inline-block}#gj-app .tag.blue{background:var(--blue)}#gj-app .grid2{grid-template-columns:1fr 1fr;gap:14px;display:grid}@media (width<=640px){#gj-app .grid2{grid-template-columns:1fr}#gj-app .hero h1{font-size:26px}}#gj-app ul.gj{margin:.3em 0;padding:0;list-style:none}#gj-app ul.gj li{align-items:flex-start;gap:9px;padding:6px 0 6px 4px;display:flex}#gj-app ul.gj li .b{flex:none}#gj-app .keyterm{border-left:5px solid var(--pink);background:#eef4f2;border-radius:8px;margin:12px 0;padding:10px 14px}#gj-app .keyterm b{color:var(--pink)}#gj-app pre{background:var(--code-bg);color:var(--code-fg);font-size:13.5px;font-family:var(--mono);border:1px solid #12384a;border-radius:10px;margin:8px 0;padding:14px 16px;line-height:1.5;overflow-x:auto}#gj-app pre .cmt{color:#7fd1a8;font-style:italic}#gj-app pre .kw{color:#a7c9f5;font-weight:700}#gj-app .codehead{align-items:center;gap:8px;margin-bottom:2px;font-size:13px;font-weight:800;display:flex}#gj-app .scroll{border:1px solid var(--line);border-radius:10px;overflow-x:auto}#gj-app table{border-collapse:collapse;background:#fff;width:100%;min-width:420px;font-size:14px}#gj-app th{background:var(--blue);color:#fff;text-align:left;padding:9px 12px;font-weight:700}#gj-app td{border-top:1px solid var(--line);padding:8px 12px}#gj-app tr:nth-child(2n) td{background:#f5fbfe}#gj-app td.true{color:var(--green);font-weight:700}#gj-app td.false{color:var(--pink);font-weight:700}#gj-app .mono{font-family:var(--mono)}#gj-app .flow{font-family:var(--mono);flex-direction:column;gap:6px;font-size:13.5px;display:flex}#gj-app .flow .row{align-items:center;gap:10px;display:flex}#gj-app .flow .box{border:2px solid var(--blue);color:var(--ink);background:#eef2f5;border-radius:8px;flex:1;padding:7px 11px}#gj-app .flow .box.base{border-color:var(--pink);background:#eef4f2}#gj-app .flow .ret{color:var(--pink);white-space:nowrap;font-weight:800}#gj-app .flow .depth1{margin-left:0}#gj-app .flow .depth2{margin-left:16px}#gj-app .flow .depth3{margin-left:32px}#gj-app .flow .depth4{margin-left:48px}#gj-app .flow .depth5{margin-left:64px}#gj-app .cards{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;display:grid}#gj-app .flip{perspective:900px;cursor:pointer;height:130px}#gj-app .flip .inner{width:100%;height:100%;transform-style:preserve-3d;transition:transform .5s;position:relative}#gj-app .flip.on .inner{transform:rotateY(180deg)}#gj-app .flip .side{backface-visibility:hidden;text-align:center;box-shadow:var(--shadow);border-radius:10px;flex-direction:column;justify-content:center;padding:12px;display:flex;position:absolute;inset:0}#gj-app .flip .front{background:var(--blue);color:#fff;font-size:15px;font-weight:800}#gj-app .flip .front small{opacity:.85;margin-top:6px;font-size:11px;font-weight:600}#gj-app .flip .back{border:2px solid var(--pink);color:var(--ink);background:#fff;font-size:13px;transform:rotateY(180deg)}#gj-app .acc{border:1px solid var(--line);background:#fff;border-radius:10px;margin:10px 0;overflow:hidden}#gj-app .acc .head{cursor:pointer;color:var(--ink);background:#f4fbfe;justify-content:space-between;align-items:center;gap:10px;padding:12px 14px;font-weight:700;display:flex}#gj-app .acc .head:hover{background:#e9f6fd}#gj-app .acc .chev{color:var(--pink);font-weight:900;transition:transform .2s}#gj-app .acc.on .chev{transform:rotate(90deg)}#gj-app .acc .body{border-top:1px dashed var(--line);padding:12px 14px;display:none}#gj-app .acc.on .body{display:block}#gj-app .viz{color:#eaf6ff;border-radius:var(--radius);box-shadow:var(--shadow);background:linear-gradient(#10385c,#1c4560);padding:16px}#gj-app .viz h3{color:#fff}#gj-app .viz .controls{flex-wrap:wrap;align-items:center;gap:8px;margin:6px 0 12px;display:flex}#gj-app .nbtn{cursor:pointer;color:#eaf6ff;font-family:var(--mono);background:0 0;border:2px solid #ffffff40;border-radius:8px;width:34px;height:34px;font-weight:700;transition:all .12s}#gj-app .nbtn.on,#gj-app .nbtn:hover{background:var(--pink);border-color:var(--pink);color:#fff}#gj-app .abtn{cursor:pointer;font-weight:800;font-family:var(--font);color:#fff;background:var(--blue);border:none;border-radius:8px;padding:8px 14px;transition:all .12s}#gj-app .abtn:hover{filter:brightness(1.08);transform:translateY(-1px)}#gj-app .abtn.ghost{background:0 0;border:2px solid #ffffff4d}#gj-app .viz .stage{grid-template-columns:180px 1fr;gap:14px;display:grid}@media (width<=560px){#gj-app .viz .stage{grid-template-columns:1fr}}#gj-app .stack{background:#ffffff0d;border:1px dashed #fff3;border-radius:10px;flex-direction:column-reverse;justify-content:flex-start;gap:6px;min-height:180px;padding:8px;display:flex}#gj-app .frame{font-family:var(--mono);background:#25496d;border:1px solid #2c4f74;border-radius:7px;padding:7px 9px;font-size:13px;animation:.25s gj-pop}#gj-app .frame.base{border-color:var(--pink);background:#4c6a67}#gj-app .frame .res{color:#9ff5c8;font-weight:700}@keyframes gj-pop{0%{opacity:0;transform:translateY(8px)scale(.96)}to{opacity:1;transform:none}}#gj-app .log{font-family:var(--mono);background:#00000040;border-radius:10px;min-height:180px;max-height:230px;padding:10px 12px;font-size:13px;overflow-y:auto}#gj-app .log div{border-bottom:1px solid #ffffff0f;padding:3px 0}#gj-app .log .final{color:#9ff5c8;font-weight:800}#gj-app .stacklabel{letter-spacing:1px;text-transform:uppercase;opacity:.7;margin-bottom:4px;font-size:11px}#gj-app .meme{color:#fff;border-radius:var(--radius);box-shadow:var(--shadow);border:2px solid var(--pink);background:linear-gradient(135deg,#111,#243b4a);padding:18px}#gj-app .meme h2{color:#fff}#gj-app .meme .big{font-family:var(--mono);color:#ffd6ec;font-size:15px}#gj-app .q{border:1px solid var(--line);background:#fff;border-radius:10px;margin:14px 0;padding:14px}#gj-app .q .opts{flex-direction:column;gap:8px;margin-top:8px;display:flex}#gj-app .opt{cursor:pointer;text-align:left;border:2px solid var(--line);color:var(--ink);font-family:var(--font);background:#fff;border-radius:9px;padding:10px 12px;font-size:14px;font-weight:600;transition:all .12s}#gj-app .opt:hover{border-color:var(--blue)}#gj-app .opt.correct{border-color:var(--green);color:#0c7a54;background:#e6faf1}#gj-app .opt.wrong{color:#c0392b;background:#fdeef2;border-color:#c0392b}#gj-app .opt:disabled{cursor:default}#gj-app .fb{min-height:18px;margin-top:8px;font-size:13px;font-weight:700}#gj-app .score{color:var(--blue);margin-top:6px;font-size:16px;font-weight:800}#gj-app .foot{text-align:center;color:var(--muted);margin-top:14px;font-size:12px}@media (prefers-reduced-motion:reduce){#gj-app *{transition:none!important;animation:none!important}#gj-app .flip .inner{transition:none}}.unit-page[data-astro-cid-xxydk4c6]{max-width:1200px;margin:0 auto;padding:clamp(2rem,6vw,3.5rem) clamp(1.25rem,4vw,1.5rem) 5rem}.back-link[data-astro-cid-xxydk4c6]{font-family:var(--font-mono);letter-spacing:.05em;color:var(--ink-muted);margin-bottom:1.5rem;font-size:.78rem;text-decoration:none;display:inline-block}.back-link[data-astro-cid-xxydk4c6]:hover{color:var(--ink)}.unit-meta[data-astro-cid-xxydk4c6]{justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.eyebrow[data-astro-cid-xxydk4c6]{font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--ink-muted);align-items:center;gap:.55rem;margin:0;font-size:.78rem;display:flex}.eyebrow-dot[data-astro-cid-xxydk4c6]{background:var(--stamp-progress);border-radius:50%;flex-shrink:0;width:.5rem;height:.5rem}