.rank-num{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;font-size:20px;font-weight:800;font-style:italic;flex-shrink:0;background:var(--bg);color:var(--muted)}
  .feed-item:nth-child(-n+3) .rank-num{background:var(--brand);color:#fff}
  .feed-item .tag{display:inline-block;font-size:11px;font-weight:700;padding:3px 9px;border-radius:5px}
  .feed-item .thumb{width:230px;height:150px;border-radius:var(--radius-sm);object-fit:cover;flex-shrink:0;background:var(--line)}

  @media(max-width:980px){
    .nav{display:none}
  }
  @media(max-width:600px){
    .feed-item{flex-direction:column;gap:14px}
    .portal-page .feed-item .thumb{width:100%;max-width:100%;height:180px;flex-shrink:1}
    .feed-item h3{font-size:17px}
    .feed-toolbar{flex-direction:column;align-items:flex-start;gap:10px}
  }