.file-grid{display:grid;grid-template-columns:repeat(3,1 fr);gap:24px;margin-top:24px}.file-card{background:#fff;border:1px solid #ccc;border-radius:8px;padding:16px;box-shadow:0 1px 3px rgba(0,0,0,0.1)}.file-card h4{font-size:1rem;margin-bottom:12px}.file-card iframe{width:320;height:250px;border:none;margin-bottom:12px}@media (max-width:900px){.file-grid{grid-template-columns:repeat(2,1 fr)}}@media (max-width:600px){.file-grid{grid-template-columns:1 fr}}