Complex sentence: A party list cannot include over 70% of representatives of the same sex and its segment from the top (and a length of any multiple of 4) must include at least 25% members of each sex.
Split into simpler sentences: A party list cannot include over 70% of representatives of the same sex. Any top-segment of a party list from (and a length of any multiple of 4) must include at least 25% members of each sex.