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p{margin:0;color:var(--muted);font-size:.88rem;line-height:1.6}.type-line{display:inline-flex;align-items:center;gap:7px;font-size:.72rem;font-weight:800;letter-spacing:.08em;color:var(--accent)}.material-preview-actions{display:flex;gap:8px;align-items:center}.material-preview-body{min-height:280px;overflow:auto;background:var(--surface-2)}.material-preview-body img,.material-preview-body video{width:100%;max-height:560px;object-fit:contain;display:block;background:#0c140f}.material-preview-body iframe{width:100%;height:62dvh;min-height:420px;border:0;background:var(--surface)}.material-preview-foot{display:flex;align-items:center;gap:12px;padding:12px 22px;border-top:1px solid var(--line);color:var(--muted);font-size:.8rem}.material-preview-foot .mini-button{margin-left:auto}.markdown-body{max-width:760px;padding:26px 28px;color:var(--ink);line-height:1.8}.markdown-body h1,.markdown-body h2,.markdown-body h3{margin:1.4em 0 .55em;line-height:1.35}.markdown-body 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