h1{font-size:48px;line-height:1.2}h2{font-size:32px;line-height:1.25}h3{font-size:24px;line-height:1.3}h4{font-size:20px;line-height:1.35}.ip-link{color:#1A5FB4;text-decoration:none;transition:color 0.2s ease}.ip-link:hover{color:#4D8FD8}