.gray-section{background:#fff}.gray-section .marker{border-color:#999c9d}.gray-section .principle-list article{border-color:#a4a6a7}.light-gray-section{background:#fff}.light-gray-section .marker{border-color:#b5b5b5}.contact{background:var(--dark);color:#fff;border-top-color:#4d4d4d}.contact .marker{border-color:#4d4d4d;color:#aaa}.contact-copy>p{color:#aaa}.contact-copy>a{border-color:#fff}.contact-form label{color:#aaa}.contact-form input,.contact-form textarea{color:#fff;border-bottom-color:#666}.contact-form input::placeholder,.contact-form textarea::placeholder{color:#888}.form-note{color:#aaa}.books .book-list{grid-template-columns:repeat(2,1fr);gap:5rem 6rem}.book-cover.thinking{background:#d4d4d4;color:#111;border:1px solid #777}
@media(max-width:1050px){.books .book-list{grid-template-columns:1fr;gap:3rem}}