:root{
    --bg:#f6f7fb; --card:#ffffff; --text:#0f172a; --muted:#475569; --border:#e2e8f0;
    --accent:#2563eb; --accent2:#0ea5e9; --ok:#16a34a; --bad:#dc2626; --warn:#f59e0b;
    --shadow:0 12px 28px rgba(15,23,42,.08); --radius:18px;
  }
  *{box-sizing:border-box}
  body{margin:0;font:15px/1.55 system-ui,-apple-system,Segoe UI,Roboto,Arial;color:var(--text);background:linear-gradient(180deg,#eef2ff,transparent 28%),var(--bg)}
  a{color:inherit}
  header{max-width:980px;margin:28px auto 0;padding:0 18px}
  .topbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:space-between}
  .nav a{display:inline-block;padding:10px 12px;border-radius:12px;background:var(--card);border:1px solid var(--border);text-decoration:none;box-shadow:0 8px 18px rgba(15,23,42,.06)}
  .nav a:hover{transform:translateY(-1px)}
  .wrap{max-width:980px;margin:16px auto 40px;padding:0 18px}
  .card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:18px}
  h1{font-size:28px;line-height:1.15;margin:0}
  .meta{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:10px 0 0}
  .badge{font-size:12px;color:var(--muted);border:1px solid var(--border);padding:6px 10px;border-radius:999px;background:#f8fafc}
  .badge strong{color:var(--text)}
  .two{display:grid;grid-template-columns:1.1fr .9fr;gap:14px;margin-top:14px}
  @media (max-width:900px){.two{grid-template-columns:1fr}}
  .box{background:#f8fafc;border:1px solid var(--border);border-radius:16px;padding:14px}
  .box h2{margin:0 0 6px;font-size:15px}
  .small{color:var(--muted);font-size:13px}
  .row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
  button, select, input{font:inherit}
  button{cursor:pointer;border:1px solid var(--border);border-radius:14px;padding:10px 12px;background:linear-gradient(180deg,#ffffff,#f8fafc);}
  button.primary{border-color:rgba(37,99,235,.35);background:linear-gradient(180deg,rgba(37,99,235,.10),rgba(37,99,235,.06))}
  button:hover{transform:translateY(-1px)}
  input, select{background:#ffffff;border:1px solid var(--border);color:var(--text);border-radius:12px;padding:10px 12px;min-width:0}
  .stat{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:12px}
  @media (max-width:700px){.stat{grid-template-columns:repeat(2,minmax(0,1fr));}}
  .pill{background:#f8fafc;border:1px solid var(--border);border-radius:14px;padding:10px}
  .pill .k{font-size:12px;color:var(--muted)}
  .pill .v{font-size:18px;margin-top:2px}
  .arena{position:relative;min-height:320px;border-radius:18px;background:#ffffff;border:1px dashed #cbd5e1;overflow:hidden}
  .tag{display:inline-flex;align-items:center;gap:8px;padding:8px 10px;border-radius:999px;background:#f1f5f9;border:1px solid var(--border);font-size:13px;color:var(--muted)}
  .dot{width:12px;height:12px;border-radius:999px;background:rgba(37,99,235,.35);border:1px solid rgba(37,99,235,.45);position:absolute}
  .toast{padding:10px 12px;border-radius:14px;border:1px solid var(--border);background:#ffffff}
  .toast.ok{border-color:rgba(22,163,74,.35)}
  .toast.bad{border-color:rgba(220,38,38,.35)}
  .toast.warn{border-color:rgba(245,158,11,.35)}
  .kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12px;background:#0f172a;color:#e2e8f0;border-radius:8px;padding:2px 6px}
  @media (prefers-reduced-motion: reduce){*{scroll-behavior:auto !important;transition:none !important;animation:none !important}}


.sr-live{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden;}

/* Capstone additions */
#arena{position:relative;min-height:420px;overflow:hidden;background:linear-gradient(180deg,#0b1220,#0f172a);border:1px solid rgba(148,163,184,.25);}
.neon{box-shadow:0 0 0 2px rgba(96,165,250,.25), 0 0 18px rgba(96,165,250,.25);}
.hudHint{opacity:.9}
.upBtn{padding:10px 12px;border-radius:14px;border:1px solid rgba(148,163,184,.35);background:#fff;cursor:pointer}
.upBtn.primary{background:linear-gradient(180deg,#fff,#f6f7fb);border-color:rgba(96,165,250,.6)}