.hidden{display:none}.hidden.show{display:block}.accordion_btn{cursor:pointer;background:#eee;border-radius:.5rem;justify-content:space-between;align-items:center;width:100%;margin-bottom:1rem;padding:.6rem 1rem;display:flex}.accordion_btn h3{margin:0;font-size:1rem;font-weight:400}.accordion_btn:after{content:"+";opacity:.6;font-size:1.2rem}.accordion_btn[aria-expanded=true]:after{content:"−"}.lesson_container{border-radius:1rem;margin-bottom:1rem;padding:1rem}.bg_est-txt{background-color:#b9cdd880}.bg_leer,.bg_escribir{background-color:#a8d2e480}.bg_hablar{background-color:#f8c4b580}.bg_lexico,.bg_gramatica,.bg_ortografia{background-color:#c6cde680}.bg_generos,.bg_creacion,.bg_plan{background-color:#efd5e080}.lesson-img{width:100%;display:flex}.lesson-img img{width:auto;height:14rem}@media screen and (min-width:568px){.lesson-img{width:50%}.lesson-img img{height:20rem}}.button{color:#fff;background:#6a3b6d;border-radius:.5rem;padding:.5rem 1rem;font-size:.9rem;display:inline-block}.button_link{color:#fff;background:#6a3b6d;padding:.4rem .75rem;border-radius:.3rem!important}.button_link:hover{opacity:.9}.lesson_container h4{margin-bottom:.25rem}.lesson_container p{margin-bottom:.5rem}body{font-family:Helvetica,sans-serif}.doc_container{max-width:1200px;margin:0 auto;padding:0 16px 32px}.nav_desk{background:#6a3b6d;padding:10px 16px}.nav_desk .logo{color:#fff;align-items:center;gap:8px;text-decoration:none;display:flex}.nav_desk .logo img{width:auto;height:24px;display:block}.nav_desk .logo h1{margin:0;font-size:18px;font-weight:500;line-height:1}.book_banner{border-radius:1rem;height:16rem;display:flex;position:relative;overflow:hidden;margin:1rem 0!important}.book_banner_text{background:linear-gradient(#0000,#6a3b6d80,#6a3b6d);flex-direction:column;justify-content:end;width:100%;padding:8px 14px;display:flex}.book_title{margin:0;font-size:16px;font-weight:500}.book_subtitle{margin:4px 0 0;font-size:14px}