:root{
      --bg:#0c0c0f;--border:#2a2a34;--text:#f4f4f5;--muted:#a1a1aa;--accent:#f97316;--accent2:#22d3ee;
      --good:#5dffb4;--bad:#ff6b6b;--gold:#ffd76a;
    }
    *{box-sizing:border-box}
    body{margin:0;min-height:100vh;display:grid;place-items:center;background:var(--bg);color:var(--text);
      font-family:system-ui,-apple-system,Segoe UI,Roboto,Outfit,sans-serif}
    a{color:var(--accent2);text-decoration:none}
    .wrap{width:min(1100px,92vw);display:grid;gap:14px}
    header{display:flex;align-items:baseline;justify-content:space-between;gap:12px;flex-wrap:wrap}
    h1{margin:0;font-size:1.1rem;letter-spacing:.18em;text-transform:uppercase}
    .card{background:linear-gradient(155deg,rgba(38,52,92,.96),rgba(12,16,36,.98));
      border:1px solid var(--border);border-radius:20px;padding:16px;box-shadow:0 18px 50px rgba(0,0,0,.5)}
    .top{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between}
    .controls{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
    button,select{
      font:inherit;border-radius:14px;border:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.25);
      color:var(--text);padding:10px 14px;cursor:pointer;font-weight:900;
      min-height:44px; touch-action: manipulation;
    }
    button.primary{border-color:rgba(93,255,180,.55);background:linear-gradient(165deg,rgba(50,120,95,.95),rgba(18,48,42,.98))}
    button:disabled{opacity:.45;cursor:not-allowed}
    .meta{display:flex;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:.9rem}
    .pill{border:1px solid rgba(255,255,255,.12);border-radius:999px;padding:6px 10px;background:rgba(0,0,0,.22)}
    canvas{
      width:min(960px,92vw);
      height:auto;
      display:block;
      margin:12px auto 8px;
      border-radius:18px;
      border:1px solid rgba(255,255,255,.12);
      background:radial-gradient(900px 520px at 50% 20%, rgba(34,211,238,.10), rgba(0,0,0,.22));
      touch-action:none;
      user-select:none;
    }
    .hint{margin:6px 0 0;color:var(--muted);font-size:.9rem;text-align:center}
    .overlay{position:fixed;inset:0;display:none;place-items:center;z-index:10;background:rgba(0,0,0,.65);backdrop-filter:blur(6px)}
    .overlay.show{display:grid}
    .panel{
      width:min(560px,92vw);border-radius:22px;border:1px solid rgba(255,255,255,.12);
      background:linear-gradient(165deg, rgba(18, 26, 54, 0.98), rgba(6, 8, 18, 0.995));
      box-shadow:0 26px 80px rgba(0,0,0,.65), inset 0 1px 0 rgba(255,255,255,.07);
      padding:18px 16px 16px;text-align:center
    }
    .panel h2{margin:0;font-size:clamp(2rem,6vw,2.8rem);font-weight:1000}
    .panel p{margin:10px 0 14px;color:rgba(180,200,230,.9);font-weight:800}
    .cta{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}