.t406 .t406__col {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(245, 245, 255, 0.88));
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(3px); /* по желанию */
  transition: transform 0.3s ease;
}

.t406 .t406__col:hover {
  transform: translateY(-5px);
}

.card-gradient {
  background: linear-gradient(135deg, rgba(255,255,255,0.9), rgba(240,240,255,0.9));
  border-radius: 16px;
  padding: 30px;
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
  backdrop-filter: blur(4px); /* по желанию, для глянцевого эффекта */
}