:root{
  --bg:#0b0d12;
  --card:#131826;
  --muted:#a6b0bf;
  --text:#e7eef7;
  --border:rgba(255,255,255,.10);
  --shadow: 0 16px 30px rgba(0,0,0,.35);
  --accent:#06b6d4;
  --accent2:#7c3aed;
}
*{box-sizing:border-box}
body{
  margin:0;
  min-height:100vh;
  background: radial-gradient(900px 520px at 15% 15%, rgba(6,182,212,.18), transparent 60%),
              radial-gradient(900px 520px at 85% 20%, rgba(124,58,237,.18), transparent 55%),
              var(--bg);
  color:var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial;
}
.wrap{width:min(1100px, calc(100% - 24px)); margin:0 auto; padding:16px}
.top{display:flex; justify-content:space-between; align-items:flex-end; gap:14px; flex-wrap:wrap}
h1{margin:0 0 6px 0; font-size:28px}
.muted{color:var(--muted)}
.card{
  margin-top:14px;
  background:rgba(19,24,38,.92);
  border:1px solid var(--border);
  border-radius:18px;
  padding:16px;
  box-shadow: var(--shadow);
}
.hud{display:flex; gap:10px; align-items:center; flex-wrap:wrap}
.chip{
  background:rgba(255,255,255,.06);
  border:1px solid var(--border);
  border-radius:999px;
  padding:8px 10px;
  font-weight:800;
}
.btn{
  cursor:pointer;
  border:1px solid rgba(6,182,212,.35);
  background:rgba(6,182,212,.16);
  color:var(--text);
  border-radius:12px;
  padding:9px 12px;
  font-weight:900;
}
.btn:hover{filter:brightness(1.04)}
.question__title{font-weight:1000; margin-bottom:10px}
.items{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(64px, 1fr));
  gap:12px;
  padding:12px;
  border-radius:16px;
  border:1px dashed rgba(255,255,255,.16);
  background:rgba(0,0,0,.18);
  min-height:140px;
}
.item{
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:42px;
  line-height:1;
  filter: drop-shadow(0 8px 10px rgba(0,0,0,.35));
}
.options{
  margin-top:14px;
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap:12px;
}
@media (min-width: 860px){
  .options{grid-template-columns: repeat(4, minmax(0,1fr));}
}
.opt{
  cursor:pointer;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
  color:var(--text);
  border-radius:16px;
  padding:18px 10px;
  font-weight:1000;
  font-size:22px;
}
.opt:hover{filter:brightness(1.05)}
.msg{min-height:24px; margin-top:12px; font-weight:900}
.msg.ok{color:#34d399}
.msg.err{color:#fb7185}
.tips{display:flex; gap:10px; align-items:center; margin-top:14px; flex-wrap:wrap}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 10px;
  border-radius:999px;
  background:rgba(124,58,237,.12);
  border:1px solid rgba(124,58,237,.25);
  font-weight:900;
}