:root{--brand:#1f3ae0;--ink:#0f1a33;--muted:#556;--border:#e9ecf3;--panel:#ffffff;--bg:#f4efe9}
.labq-wrap{font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;color:var(--ink);line-height:1.55}
.labq-hero{background:#0f1a33 center/cover no-repeat;border-radius:14px;overflow:hidden;margin:12px 0 16px 0}
.labq-hero .inner{background:rgba(15,26,51,.45);padding:40px 28px;color:#fff}
.labq-hero h1{margin:0 0 6px 0;font-size:28px;line-height:1.15;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.5)}
.labq-hero p{margin:6px 0 0 0;color:#fff;opacity:.95;text-shadow:0 1px 2px rgba(0,0,0,.5)}
.labq-card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:18px;margin:12px 0}
.labq-title{font-size:26px;margin:0 0 6px 0;color:#1a237e}
.labq-sub{opacity:.85;margin:0 0 12px 0}
.labq-btn{display:inline-block;background:var(--brand);color:#fff;border:none;border-radius:8px;padding:10px 14px;font-weight:600;cursor:pointer;text-decoration:none}
.labq-btn:disabled{opacity:.6;cursor:not-allowed}.labq-btn.secondary{background:#eef2ff;color:#1a237e}.labq-q{margin:10px 0 8px 0;font-weight:700}.labq-opt{margin:8px 0;display:block}.labq-divider{border:none;border-top:1px solid var(--border);margin:12px 0}.labq-result h3{margin:0 0 6px 0;font-size:18px;color:#3141c5}.labq-note{font-size:12px;color:var(--muted)}.labq-progress{font-size:12px;color:var(--muted);margin-bottom:8px}.labq-nav{display:flex;gap:8px;justify-content:space-between;margin-top:12px}.labq-gate h3{margin:0 0 8px 0}.labq-restart{margin-top:8px}