.dt-tool-04{display:grid;grid-template-columns:minmax(320px,.9fr) minmax(0,1.1fr);gap:18px;align-items:start}
.dt-tool-04-card{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:18px;box-shadow:var(--shadow-sm);min-width:0}
.dt-tool-04-input-card{position:sticky;top:20px}
.dt-tool-04-input{min-height:500px}
.dt-tool-04-sync{display:inline-flex;align-items:center;gap:8px;margin:12px 0;color:var(--muted);font-size:.9rem}
.dt-tool-04-sync input{accent-color:var(--primary)}
.dt-tool-04-file input{display:none}
.dt-tool-04-preview{min-height:500px;border:1px solid var(--border);border-radius:18px;background:var(--surface-2);padding:22px;overflow:auto}
.dt-tool-04-empty{min-height:360px;display:grid;place-content:center;text-align:center;border:1px dashed var(--border-strong);border-radius:16px;background:rgba(255,255,255,.64);color:var(--muted);padding:22px}
.dt-tool-04-empty h2{margin:0 0 8px;color:var(--text);font-size:1.04rem}
.dt-tool-04-empty p{margin:0}
.dt-tool-04-preview h1,.dt-tool-04-preview h2,.dt-tool-04-preview h3{line-height:1.2;margin:1.2em 0 .5em}
.dt-tool-04-preview h1{font-size:1.85rem;margin-top:0}
.dt-tool-04-preview h2{font-size:1.4rem}
.dt-tool-04-preview p,.dt-tool-04-preview ul,.dt-tool-04-preview ol,.dt-tool-04-preview blockquote,.dt-tool-04-preview pre{margin:0 0 1rem}
.dt-tool-04-preview code{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:.08em .35em}
.dt-tool-04-preview pre{background:#0f172a;color:#e5e7eb;border-radius:14px;padding:16px;overflow:auto}
.dt-tool-04-preview blockquote{border-left:4px solid var(--primary);background:var(--surface);border-radius:0 12px 12px 0;padding:10px 14px;color:var(--muted)}
.dt-tool-04-preview del{color:var(--muted)}
.dt-tool-04-preview table{width:100%;border-collapse:collapse;margin:0 0 1rem;font-size:.94rem}
.dt-tool-04-preview th,.dt-tool-04-preview td{border:1px solid var(--border);padding:8px 10px;text-align:left;vertical-align:top}
.dt-tool-04-preview th{background:var(--surface);font-weight:700}
.dt-tool-04-preview input[type="checkbox"]{margin-right:8px;accent-color:var(--primary)}
.dt-tool-04-status{color:var(--muted);font-size:.82rem}
body[data-page-kind="tool"] .hero-mini+.dt-tool-04{margin-top:18px}
@media (max-width:900px){
  .dt-tool-04{grid-template-columns:1fr;margin-bottom:88px}
  .dt-tool-04-input-card{position:static}
  .dt-tool-04-input,.dt-tool-04-preview{min-height:360px}
  .dt-tool-04-card{border-radius:18px;padding:14px}
  .dt-tool-04-preview{padding:16px}
}
@media (max-width:640px){
  body[data-page-kind="tool"] .hero-mini+.dt-tool-04{margin-top:14px}
}