/* 知识库（kb.js）：资料窗口里的“知识库”一块、搜索框下面的“文件里的文字” */
.kb-box { background:var(--bg);border-radius:18px;padding:16px;margin-top:14px;display:grid;gap:10px;min-width:0; }
.kb-box h3 { margin:0;font-size:15px; }
.kb-box p { margin:0;line-height:1.8;overflow-wrap:anywhere; }
.kb-unit { display:grid;gap:6px;min-width:0; }
.kb-unit pre { margin:0;white-space:pre-wrap;overflow-wrap:anywhere;max-height:220px;overflow:auto;font-size:13px;line-height:1.8;background:var(--surface);border-radius:12px;padding:12px; }
.kb-text { width:100%;min-height:180px;resize:vertical;font-size:14px;line-height:1.8;box-sizing:border-box; }
.kb-actions { flex-wrap:wrap;gap:8px; }
.kb-toggle { display:flex;align-items:center;gap:10px;font-size:14px;cursor:pointer;min-height:44px; }
.kb-toggle input { width:20px;height:20px;accent-color:var(--accent-ink);margin:0; }
.kb-hits { display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px; }
.kb-hit { display:grid;gap:8px;min-width:0;padding:18px 20px;text-align:left;background:var(--surface);border-radius:22px;box-shadow:0 0 0 1px var(--ring);transition:background .28s cubic-bezier(.32,.72,0,1); }
@media(hover:hover) { .kb-hit:hover { background:var(--tint); } }
.kb-hit-head { display:flex;gap:10px;align-items:baseline;justify-content:space-between;min-width:0; }
.kb-hit-head strong { overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0; }
.kb-hit-head .small { flex:none; }
.kb-hit-text { font-size:13px;line-height:1.8;color:var(--fg2);overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden; }
.kb-hit mark { background:color-mix(in srgb,var(--accent-ink) 22%,transparent);color:var(--fg);border-radius:4px;padding:0 1px; }
/* 资料页的备份提醒 */
.material-backup-hint { max-width:65em;display:grid;gap:8px;margin:6px 0 14px;padding:14px 18px;background:var(--surface);border-radius:18px;box-shadow:0 0 0 1px var(--ring); }
.material-backup-hint p { margin:0;line-height:1.8;overflow-wrap:anywhere; }
.material-backup-hint .row { margin:0;gap:12px;flex-wrap:wrap;align-items:center; }
@media(max-width:760px) {
  .material-backup-hint { padding:12px 14px; }
  .kb-hits { grid-template-columns:1fr;gap:10px; }
  .kb-hit { padding:16px; }
  .kb-text { font-size:16px; }
}