.gra18-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:18px 0 28px}.gra18-card{padding:18px;border:1px solid #c6dfef;border-radius:8px;background:#f2f8fd;min-width:0}.gra18-main{display:flex;justify-content:space-between;gap:12px;color:#064777;text-decoration:none!important;line-height:1.4}.gra18-main strong{font-size:1.05rem}.gra18-card p{font-size:.94rem;line-height:1.55;color:#476176;margin:9px 0 0}.gra18-sub{display:flex;gap:10px 18px;flex-wrap:wrap;margin-top:13px;font-size:.93rem}.gra18-main:hover,.gra18-sub a:hover{text-decoration:underline!important}.gra18-card a:focus-visible{outline:3px solid #0068c9;outline-offset:4px}#practicar h3{margin-top:28px}@media(max-width:600px){.gra18-grid{grid-template-columns:1fr}}