:root{
  --bg:#0f172a;
  --panel:#111827;
  --line:#334155;
  --text:#e5e7eb;
  --muted:#94a3b8;
  --accent:#2563eb;
  --ok:#16a34a;
  --warn:#f59e0b;
  --bad:#dc2626;
}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,Segoe UI,Arial,sans-serif;background:linear-gradient(180deg,#0b1020,#111827);color:var(--text)}
.wrap{max-width:1180px;margin:0 auto;padding:24px}
.hero{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.title{font-size:34px;font-weight:900}
.subtitle{color:var(--muted);margin-top:6px}
.row{display:flex;gap:10px;flex-wrap:wrap}
.grid{display:grid;gap:16px}
.cards{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:rgba(17,24,39,.94);border:1px solid var(--line);border-radius:22px;padding:18px}
.hidden{display:none!important}
button,input,textarea,select{font:inherit}
input,textarea,select{width:100%;background:#0b1220;color:var(--text);border:1px solid var(--line);border-radius:14px;padding:12px 14px}
textarea{min-height:84px;resize:vertical}
button{border:0;border-radius:14px;padding:12px 16px;font-weight:800;cursor:pointer;background:var(--accent);color:#fff}
button.secondary{background:#1f2937}
button.ok{background:var(--ok)}
button.warn{background:var(--warn);color:#111827}
button.bad{background:var(--bad)}
.notice{padding:12px 14px;border-radius:14px;border:1px solid var(--line);background:#0b1220}
.notice.danger{border-color:#991b1b;background:rgba(220,38,38,.08)}
.notice.success{border-color:#166534;background:rgba(22,163,74,.08)}
.pill{display:inline-block;padding:7px 12px;border-radius:999px;background:#172033;border:1px solid var(--line);font-size:12px}
.small{font-size:12px;color:var(--muted)}
.topbar{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.list{display:grid;gap:10px}
.item{padding:12px;border-radius:14px;background:#0b1220;border:1px solid var(--line)}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}
.stat{padding:14px;border-radius:18px;background:#0b1220;border:1px solid var(--line)}
.stat .k{font-size:12px;color:var(--muted)}
.stat .v{font-size:28px;font-weight:900;margin-top:6px}
.mono{font-family:ui-monospace,monospace}
.progress-wrap{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:12px 0}
.progress-label{font-weight:800}
.progress-bar{flex:1;min-width:180px;height:10px;border:1px solid var(--line);border-radius:999px;overflow:hidden;background:#0b1220}
.progress-fill{height:100%;background:linear-gradient(90deg,#2563eb,#60a5fa);width:0}
.timer-big{display:flex;align-items:center;justify-content:center;min-height:96px;border-radius:22px;background:#0b1220;border:1px solid var(--line);font-size:56px;font-weight:900}
.timer-sub{font-size:12px;color:var(--muted);text-align:center;margin-top:8px}
.question-box{padding:20px;border-radius:22px;background:#0b1220;border:1px solid var(--line)}
.question-big{font-size:28px;font-weight:900;line-height:1.2;margin-bottom:16px}
.options-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.option{border:1px solid rgba(255,255,255,.18);border-radius:18px;padding:16px;color:#fff}
.option-a{background:#e21b3c}
.option-b{background:#1368ce}
.option-c{background:#d89e00;color:#111827}
.option-d{background:#26890c}
.option-content{display:flex;align-items:flex-start;gap:12px}
.option .letter{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;background:rgba(255,255,255,.18);font-size:18px;font-weight:900}
.option-image{width:110px;height:78px;object-fit:cover;border-radius:12px;border:1px solid rgba(255,255,255,.25)}
.question-media{width:100%;max-height:280px;object-fit:contain;border-radius:18px;border:1px solid var(--line);background:#0b1220;margin-bottom:12px}
.results-card{margin-top:14px;padding:18px;border-radius:22px;background:#0b1220;border:1px solid var(--line)}
.bar-row{display:grid;grid-template-columns:36px 1fr 64px;gap:10px;align-items:center;margin-bottom:10px}
.bar-track{height:16px;border-radius:999px;background:#111827;border:1px solid var(--line);overflow:hidden}
.bar-fill{height:100%}
.bar-fill.option-a{background:#e21b3c}
.bar-fill.option-b{background:#1368ce}
.bar-fill.option-c{background:#d89e00}
.bar-fill.option-d{background:#26890c}
.correct-pill{display:inline-block;padding:8px 12px;border-radius:999px;background:rgba(22,163,74,.12);border:1px solid #16a34a}
.rank-row{display:grid;grid-template-columns:56px 1fr auto;gap:12px;align-items:center;padding:14px 16px;border-radius:18px;background:#0b1220;border:1px solid var(--line);margin-bottom:10px}
.rank-row.top1{border-color:#f59e0b}
.rank-row.top2{border-color:#94a3b8}
.rank-row.top3{border-color:#b45309}
.rank-medal{font-size:26px;text-align:center}
.rank-name{font-size:18px;font-weight:800}
.rank-score{font-size:20px;font-weight:900}
@media (max-width:700px){
  .options-grid{grid-template-columns:1fr}
  .title{font-size:28px}
  .timer-big{font-size:42px;min-height:84px}
  .question-big{font-size:22px}
}