.math-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:30px}.math-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:10px}.math-card h3{color:var(--navy);font-size:20px}.math-card p{margin:7px 0 14px;color:var(--muted);font-size:14px}.math-card ul{padding-left:18px;color:var(--muted);font-size:14px}.math-card li+li{margin-top:5px}.article-links{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:30px}.article-links a{display:block;padding:17px 18px;background:#fff;border:1px solid var(--line);border-radius:8px;color:var(--navy);font-weight:800;text-decoration:none}.article-links a span{display:block;margin-bottom:5px;color:var(--red);font-size:12px}.article-links a:hover{border-color:var(--navy);box-shadow:0 5px 18px rgba(26,58,92,.09)}@media(max-width:760px){.math-grid,.article-links{grid-template-columns:1fr}}