.parts-fab,.parts-sheet,.parts-sheet-overlay{display:none}
@media(max-width:960px){
  .news-article-layout{display:block}
  .news-related{margin-top:42px}
  .news-toc{display:none}
  .parts-fab{position:fixed;right:16px;top:50%;z-index:60;display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border:0;border-radius:999px;background:#1d5cf5;color:#fff;font-size:16px;font-weight:600;box-shadow:0 10px 24px -8px rgba(29,92,245,.65);cursor:pointer}
  .parts-fab:active{transform:scale(.97)}
  .parts-fab:focus-visible,.sheet-close:focus-visible,.sheet-list a:focus-visible{outline:3px solid #123d76;outline-offset:3px}
  .parts-sheet-overlay{display:block;position:fixed;inset:0;z-index:996;background:rgba(17,24,39,.45);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);opacity:0;transition:opacity .25s ease}
  .parts-sheet-overlay[hidden]{display:none}
  .parts-sheet{display:flex;flex-direction:column;position:fixed;left:0;right:0;bottom:0;z-index:997;max-height:82vh;background:#fff;border-radius:26px 26px 0 0;box-shadow:0 -12px 40px rgba(0,0,0,.18);transform:translateY(100%);visibility:hidden;transition:transform .3s ease,visibility .3s}
  body.parts-sheet-open{overflow:hidden}
  body.parts-sheet-open .parts-sheet{transform:translateY(0);visibility:visible}
  body.parts-sheet-open .parts-sheet-overlay{opacity:1}
  .sheet-handle{width:48px;height:6px;margin:12px auto 4px;border-radius:99px;background:#d1d5db}
  .sheet-head{display:flex;align-items:center;gap:12px;padding:12px 20px 14px}
  .sheet-icon{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:48px;height:48px;border-radius:14px;background:#eef3ff;color:#1d5cf5}
  .sheet-meta{flex:1;min-width:0}
  .sheet-title{overflow:hidden;white-space:nowrap;text-overflow:ellipsis;font-size:17px;font-weight:600}
  .sheet-count{margin-top:2px;color:#6b7280;font-size:14px}
  .sheet-close{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:40px;height:40px;border:0;border-radius:50%;background:#f1f2f4;color:#4b5563;cursor:pointer}
  .sheet-search{display:flex;align-items:center;gap:10px;height:48px;margin:0 20px 12px;padding:0 14px;border-radius:12px;background:#f3f4f6;color:#6b7280}
  .sheet-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:#080a0e;font:inherit;font-size:16px}
  .sheet-list{list-style:none;margin:0;padding:8px 12px calc(16px + env(safe-area-inset-bottom));overflow-y:auto;-webkit-overflow-scrolling:touch;border-top:1px solid #e5e7ea}
  .sheet-list a{display:flex;align-items:center;gap:14px;padding:12px;border-radius:12px;color:#374151;font-size:16px}
  .sheet-list .toc-num{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:34px;height:34px;border-radius:50%;background:#eef3ff;color:#2563eb;font-size:14px;font-weight:600}
  .sheet-list .toc-name{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
  .sheet-list .is-current a{background:#eff5ff;color:#1d5cf5}
  .sheet-list .is-current .toc-num{background:#1d5cf5;color:#fff}
  .sheet-empty{margin:0;padding:20px;text-align:center;color:#6b7280}
}