:root{
  --bg:#0b0f14;--card:#101723;--ink:#e8eef7;--muted:#9fb1c5;--pri:#5b8cff;--pri-2:#7aa4ff;
  --ok:#22c55e;--mid:#f59e0b;--low:#ef4444;--stroke:#1d2a3d;
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;background:
    radial-gradient(1400px 700px at -10% -10%, #132035 0%, transparent 70%),
    radial-gradient(1400px 700px at 110% 110%, #1a2a47 0%, transparent 70%),
    var(--bg);
  color:var(--ink);
  font:16px/1.5 -apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Inter,Arial;
}
.wrap{min-height:100%;display:flex;flex-direction:column;gap:20px;padding:24px}
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  border:1px solid var(--stroke);background:rgba(16,23,35,.6);
  backdrop-filter:blur(8px);border-radius:16px;padding:12px 16px;
}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand .dot{width:10px;height:10px;border-radius:50%;background:linear-gradient(45deg,var(--pri),#9f7aff)}
.meta{display:flex;gap:8px;flex-wrap:wrap}
.pill{border:1px solid var(--stroke);border-radius:999px;padding:6px 12px;color:var(--muted);font-size:14px;text-decoration:none}

.card{
  border:1px solid var(--stroke);background:linear-gradient(180deg,rgba(16,23,35,.92),rgba(16,23,35,.78));
  border-radius:20px;padding:24px;box-shadow:0 18px 50px rgba(0,0,0,.35);max-width:1100px;width:100%;margin:0 auto;
}
.center{text-align:center}
h1{margin:0 0 6px 0;font-size:28px}
.muted{color:var(--muted);margin:0 0 16px 0}

.q-list{display:flex;flex-direction:column;gap:18px;margin-top:8px}
.q{border:1px solid var(--stroke);border-radius:16px;padding:16px;background:#0e1522;}
.q .qhead{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.q .tag{font-size:12px;color:var(--pri-2);border:1px solid var(--pri-2);border-radius:999px;padding:4px 8px}
.q .title{font-weight:600;margin:8px 0 10px 0}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media (max-width:700px){.opts{grid-template-columns:1fr}}
.opt{
  display:flex;align-items:flex-start;gap:8px;border:1px solid var(--stroke);border-radius:12px;padding:10px;
  background:#0b1220;cursor:pointer;transition:transform .05s ease, border-color .15s ease;
}
.opt:hover{transform:translateY(-1px);border-color:#2a3a55}
.opt input{margin-top:3px}

.actions{display:flex;gap:12px;justify-content:flex-end;margin-top:18px}
.actions.center{justify-content:center}
.btn-primary,.btn-ghost{
  appearance:none;border:0;border-radius:12px;padding:12px 16px;font-weight:700;cursor:pointer;text-decoration:none;text-align:center
}
.btn-primary{background:linear-gradient(45deg,var(--pri),#9f7aff);color:#0b0f14}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--stroke)}

.foot{color:var(--muted);text-align:center;margin-top:auto}

.score-badge{
  display:inline-flex;align-items:center;justify-content:center;width:220px;height:220px;border-radius:28px;
  background:conic-gradient(from 0deg,var(--pri),#9f7aff);color:#0b0f14;font-size:58px;font-weight:900;margin:12px auto 10px auto;
  box-shadow:0 16px 60px rgba(0,0,0,.4);
}
.score-badge.ok{background:conic-gradient(from 0deg,var(--ok),#86efac)}
.score-badge.mid{background:conic-gradient(from 0deg,var(--mid),#fde68a)}
.score-badge.low{background:conic-gradient(from 0deg,var(--low),#fecaca)}