.stl-lab-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.9fr);gap:1.25rem;align-items:start}
.stl-preview{min-height:260px;display:grid;place-items:center;padding:1rem;border:1px solid var(--line);border-radius:18px;background:linear-gradient(145deg,rgba(249,171,56,.08),rgba(7,91,186,.08));overflow:auto}
.stl-preview svg{width:100%;max-height:320px;filter:drop-shadow(0 18px 28px rgba(11,36,51,.14))}
.stl-preview .stl-empty{max-width:34rem;text-align:center;color:var(--muted)}
.stl-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.65rem;margin-top:1rem}
.stl-stats div{padding:.8rem;border:1px solid var(--line);border-radius:14px;background:var(--surface)}
.stl-stats strong,.stl-stats span{display:block}
.stl-stats span{font-size:.82rem;color:var(--muted);margin-top:.2rem}
.stl-warning{border-left:5px solid #d97706;background:rgba(217,119,6,.1);padding:1rem;border-radius:12px;margin:1rem 0}
.stl-checklist{padding-left:1.25rem;color:var(--muted)}
.stl-checklist li+li{margin-top:.45rem}
@media (max-width:900px){.stl-lab-grid{grid-template-columns:1fr}.stl-stats{grid-template-columns:1fr}}