:root{--bg: #0e1310;--panel: #16201a;--line: #28352d;--ink: #eef7f1;--dim: #93b3a4;--accent: #5a9c6a;--accent2: #7fd99a;--node: #1f2c25;--node2: #27392f;--in: #243a44;--out: #3a2a44;--sel: #1f3d2a;--wire: #4a6a55;--ok: #5a9c6a;--bad: #5a2a2a}*{box-sizing:border-box}html,body{margin:0;height:100%}body{background:radial-gradient(900px 560px at 50% -8%,#16221a,var(--bg));color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,sans-serif;display:flex;justify-content:center;-webkit-user-select:none;user-select:none}#app{width:100%;max-width:720px;padding:12px 12px 26px}header{text-align:center;margin-bottom:6px}h1{margin:0;font-size:28px;letter-spacing:6px;font-weight:800;color:var(--accent2)}.sub{margin:3px 0 0;color:var(--dim);font-size:13px}.bar{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;align-items:center;margin:10px 0}.seg{display:inline-flex;background:var(--panel);border:1px solid var(--line);border-radius:999px;overflow:hidden}.seg button{background:none;border:none;color:var(--dim);padding:6px 13px;font:600 13px system-ui;cursor:pointer}.seg button.active{background:var(--accent);color:#06170d}.btn{background:var(--panel);border:1px solid var(--line);color:var(--ink);padding:7px 14px;border-radius:999px;font:700 13px system-ui;cursor:pointer}.btn:hover{border-color:var(--accent2)}.btn.primary{background:var(--accent);color:#06170d;border-color:var(--accent)}.btn:disabled{opacity:.45;cursor:default}.level{text-align:center;margin:6px 0}.level .name{font:800 18px system-ui;color:var(--accent2)}.level .blurb{color:var(--dim);font-size:13px;margin-top:2px}.scoreboard{display:flex;gap:10px;justify-content:center;margin:8px 0;flex-wrap:wrap}.readout{background:#0a120d;border:1px solid var(--line);border-radius:8px;padding:5px 16px;font:800 18px ui-monospace,monospace;color:var(--accent2);min-width:92px;text-align:center}.readout.over{color:#ffb27a}.readout.par{color:var(--accent2)}.readout span{color:var(--dim);font-size:11px;display:block;font-weight:600;letter-spacing:.5px}.workspace{display:grid;grid-template-columns:1fr;gap:12px}@media(min-width:600px){.workspace{grid-template-columns:1fr 200px}}.stage{position:relative}.board{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px;min-height:240px}.colhead{color:var(--dim);font:700 11px system-ui;letter-spacing:.5px;margin-bottom:6px}.nodes{display:flex;flex-wrap:wrap;gap:8px}.node{position:relative;min-width:86px;padding:8px 10px;border-radius:8px;background:var(--node);border:1px solid var(--line);cursor:pointer;font:700 13px ui-monospace,monospace}.node:hover{border-color:var(--accent2)}.node.in{background:var(--in)}.node.gate{background:var(--node2)}.node.sel{box-shadow:inset 0 0 0 2px var(--accent2)}.node.pick{box-shadow:inset 0 0 0 2px #ffd27a}.node.out{box-shadow:inset 0 0 0 2px #b98fd9}.node .lbl{display:block;color:var(--accent2)}.node.in .lbl{color:#8fd9d2}.node .wires{display:block;color:var(--dim);font-size:11px;margin-top:2px}.node .val{position:absolute;top:4px;right:7px;font-size:11px;color:var(--dim)}.node .del{position:absolute;bottom:3px;right:5px;font-size:10px;color:var(--dim)}.node .del:hover{color:#ff9aa6}.controls{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px}.controls h3{margin:0 0 8px;font:800 12px system-ui;letter-spacing:.5px;color:var(--dim)}.controls .btn{width:100%;margin-bottom:6px;text-align:center}.controls .pickhint{color:var(--dim);font-size:12px;line-height:1.4;margin:6px 0 0}.tt{margin-top:12px;background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:10px;overflow-x:auto}.tt h3{margin:0 0 8px;font:800 12px system-ui;letter-spacing:.5px;color:var(--dim)}table.truth{border-collapse:collapse;width:100%;font:700 13px ui-monospace,monospace}table.truth th,table.truth td{border:1px solid var(--line);padding:4px 8px;text-align:center}table.truth th{color:var(--dim);font-size:11px}table.truth td.you{color:var(--ink)}table.truth td.want{color:var(--accent2)}table.truth tr.row-ok td.you{background:#5a9c6a2e}table.truth tr.row-bad td.you{background:#5a2a2a80;color:#ff9aa6}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#08100bd1;border-radius:10px;backdrop-filter:blur(3px)}.overlay.hidden{display:none}.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 26px;text-align:center;max-width:340px}.card h2{margin:0 0 6px;font-size:24px;color:var(--accent2)}.card p{margin:6px 0;color:var(--dim);font-size:14px}.card .row{display:flex;gap:8px;justify-content:center;margin-top:14px;flex-wrap:wrap}.hint{text-align:center;color:var(--dim);font-size:12px;margin-top:12px;line-height:1.5}