#topicStage{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;max-width:1200px;margin:auto}#topicStage.hidden{display:none}.material-upload{border-top:1px solid var(--line);padding-top:20px;margin-top:28px}.material-upload h3,.material-preview h3{font-size:20px}.material-upload input[type=checkbox]{width:auto}.material-preview{padding:24px;border:1px solid var(--line);border-radius:14px;background:var(--surface);align-self:start;position:sticky;top:20px}.material-preview article{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.85;max-height:480px;overflow:auto}.material-preview nav{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:20px 0}.material-preview nav button{width:auto;padding:8px 10px}.material-preview textarea{width:100%;margin:10px 0}.material-preview [hidden]{display:none!important}@media(max-width:760px){#topicStage{grid-template-columns:1fr;gap:24px}.material-preview{position:static;padding:20px}.material-preview article{max-height:400px}}
#topicStage{align-items:start;justify-items:stretch}.material-preview{width:100%;top:calc(var(--appbar-height) + 20px)}.material-upload>label{display:flex;align-items:baseline;gap:8px}.material-upload input[type=checkbox]{flex:none}.material-upload>button{margin-top:14px}.material-preview a,.material-upload a{color:var(--ink)}
.material-upload>label.material-rights{display:grid;grid-template-columns:18px minmax(0,1fr);align-items:start;gap:10px;line-height:1.7;cursor:pointer}.material-upload label.material-rights input[type=checkbox]{appearance:auto;box-sizing:border-box;width:18px;height:18px;min-width:18px;min-height:18px;margin:3px 0 0;padding:0;accent-color:var(--accent);cursor:pointer}.material-rights-text{min-width:0;overflow-wrap:anywhere}.material-rights-text a{display:inline}