.mbst-exam-shell{display:block;max-width:1200px;margin:24px auto;
  --bg:#0f172a;--panel:#111827;--panel2:#1f2937;--text:#e5eefb;--muted:#9ca3af;--accent:#22c55e;--accent2:#38bdf8;--line:rgba(255,255,255,.09);
  color:var(--text);background:linear-gradient(180deg,#0b1220,#10192b);padding:24px;border-radius:24px;font-family:Inter,Arial,sans-serif;box-shadow:0 20px 60px rgba(0,0,0,.25)
}
.mbst-topbar{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap;margin-bottom:14px}
.mbst-topbar h2,.mbst-card h1,.mbst-card h2,.mbst-card h3{color:#fff;margin:0}
.mbst-kicker{font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:#7dd3fc;margin-bottom:6px}
.mbst-stats{display:flex;flex-wrap:wrap;gap:10px}
.mbst-chip{background:rgba(255,255,255,.06);border:1px solid var(--line);border-radius:999px;padding:10px 14px;font-size:13px}
.mbst-progress{height:12px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-bottom:20px}
.mbst-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--accent2),var(--accent));border-radius:999px;transition:width .25s ease}
.mbst-card,.mbst-sidecard,.mbst-mini-panel,.mbst-metric{background:rgba(255,255,255,.04);backdrop-filter:blur(10px);border:1px solid var(--line);border-radius:22px;padding:22px}
.mbst-hero{padding:34px}
.mbst-badge{display:inline-flex;background:rgba(56,189,248,.12);color:#7dd3fc;border:1px solid rgba(56,189,248,.25);padding:8px 12px;border-radius:999px;font-size:12px;font-weight:700;margin-bottom:14px}
.mbst-badge.success{background:rgba(34,197,94,.12);color:#86efac;border-color:rgba(34,197,94,.25)}
.mbst-badge.warning{background:rgba(245,158,11,.12);color:#fcd34d;border-color:rgba(245,158,11,.25)}
.mbst-grid{display:grid;gap:16px}.mbst-grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.mbst-grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.mbst-grid label{display:flex;flex-direction:column;gap:8px}
.mbst-grid input,.mbst-grid select,.mbst-card textarea{width:100%;background:#0b1220;color:#fff;border:1px solid var(--line);border-radius:16px;padding:14px 15px}
.mbst-card textarea{resize:vertical;min-height:240px}
.mbst-actions{display:flex;gap:12px;align-items:center;margin-top:18px;flex-wrap:wrap}.mbst-actions.between{justify-content:space-between}.mbst-actions.compact{margin-top:0}
.mbst-btn{border:none;border-radius:14px;padding:13px 18px;background:#243041;color:#fff;cursor:pointer;font-weight:700}.mbst-btn.primary{background:linear-gradient(90deg,var(--accent2),var(--accent));color:#07131f}.mbst-btn.ghost{background:transparent;border:1px solid var(--line)}.mbst-btn:disabled{opacity:.4;cursor:not-allowed}
.mbst-exam-layout{display:grid;grid-template-columns:290px 1fr;gap:18px}
.mbst-side-title{color:#7dd3fc;text-transform:uppercase;font-size:12px;letter-spacing:.1em;margin-bottom:8px}
.mbst-question-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}
.mbst-image-wrap{margin:18px 0;border-radius:18px;overflow:hidden;border:1px solid var(--line);background:#fff}.mbst-image-wrap img{display:block;width:100%;height:auto}
.mbst-answer-guide{margin-bottom:12px}.mbst-answer-guide span{display:block;color:#cbd5e1;font-size:13px;margin-bottom:8px}.mbst-tags{display:flex;flex-wrap:wrap;gap:8px}.mbst-tags span{background:rgba(255,255,255,.08);padding:8px 10px;border-radius:999px;font-size:12px;color:#cbd5e1}
.mbst-coach-panel{margin-top:16px;padding:18px;border-radius:18px;border:1px solid rgba(34,197,94,.18);background:rgba(34,197,94,.06)}
.hidden{display:none}.mbst-loader{padding:30px;text-align:center;font-weight:700;color:#cbd5e1}
.result-card{text-align:center}.mbst-metric{text-align:left}.mbst-metric span{display:block;color:#94a3b8;font-size:13px;margin-bottom:6px}.mbst-metric strong{font-size:24px}
@media (max-width:900px){.mbst-exam-layout,.mbst-grid.cols-2,.mbst-grid.cols-3{grid-template-columns:1fr}.mbst-topbar{align-items:stretch}}