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minmax(320px,.85fr);gap:16px;align-items:start;min-width:0}.studio-step-main{display:grid;gap:12px;min-width:0}.studio-step-nav{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:8px}.studio-step-nav-item{display:grid;grid-template-columns:28px minmax(0,1fr) auto;align-items:center;gap:8px;min-height:54px;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--ink);text-align:left;cursor:pointer;transition:border-color .15s ease,background .15s ease}.studio-step-nav-item:hover{border-color:var(--accent);background:var(--accent-soft)}.studio-step-nav-item.active{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px 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h3{font-size:15px;font-weight:900}.studio-step-preview-header :slotted(span){color:var(--accent-strong);font-weight:900;font-size:13px}.studio-step-preview-body{display:grid;gap:12px;min-height:0;overflow:auto;padding-top:12px;padding-right:2px}.studio-step-preview .preview-panel{position:static;top:auto;padding:0}.preview-panel-compact{padding-top:0}.studio-step-summary{min-width:0}.step-summary-card{padding:12px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 10px 24px #101a1f0d}.step-summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.step-summary-grid dt{color:var(--muted);font-size:11px;font-weight:800}.step-summary-grid dd{margin:2px 0 0;overflow:hidden;color:var(--ink);font-size:12px;font-weight:800;text-overflow:ellipsis;white-space:nowrap}.step-summary-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.step-summary-tag{padding:4px 8px;border:1px solid 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small{overflow:hidden;color:var(--muted);font-size:11px;text-overflow:ellipsis;white-space:nowrap}.remix-media-preview-thumb{position:relative;display:grid;place-items:center;overflow:hidden;width:100%;aspect-ratio:9 / 16;border-radius:6px;background:#0f1a1d;color:#fff;font-size:12px;font-weight:800}.remix-media-preview-thumb img{width:100%;height:100%;object-fit:cover}.remix-media-preview-play{position:absolute;right:6px;bottom:6px;color:#fff;filter:drop-shadow(0 2px 6px rgba(0,0,0,.45))}.remix-script-hint{margin-top:10px;color:var(--muted);font-size:12px;line-height:1.5}.remix-submit-checklist{display:grid;gap:8px;margin-top:12px}.remix-submit-checklist p{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:13px}.remix-submit-checklist p.done{color:var(--ink)}@media (max-width: 1099px){.studio-step-workbench{grid-template-columns:minmax(0,1fr)}.studio-step-nav{grid-template-columns:repeat(2,minmax(0,1fr))}.studio-step-preview{position:static;max-height:none;order:2}.studio-step-main{order:1}.studio-step-panel{max-height:none}}