.sn-ebook__chapter-nav-shadow{background-color:hsla(0,0%,7%,.16);background-image:linear-gradient(0deg,hsla(0,0%,7%,.16),hsla(0,0%,7%,.48));display:none;height:100%;left:0;position:fixed;top:0;width:100%;z-index:998}.sn-ebook__chapter-nav-shadow.active{display:block}.sn-ebook__chapter-nav{--sn-chapter-header-color:var(--sn-header-color,#151515);--sn-chapter-border:var( --sn-border-colo,#eaeaed);--sn-chapter-action-color:var(--sn-red,#da4002);--sn-chapter-name:var(--sn-grey-400,#585871);--sn-chapter-active-name:var(--sn-yellow,#fe9a03);--sn-chapter-title:var(--sn-header-color,#181818);--sn-chapter-active-title:var(--sn-dark-blue,#1d0269)}.sn-ebook__chapter-nav-header{color:var(--sn-chapters-header-color);font-size:16px;font-weight:700;line-height:125%;margin-bottom:8px}.sn-ebook__chapter-nav-listing{border:1px solid var(--sn-chapter-border);border-radius:8px;display:none;flex-direction:column;list-style:none;margin:0;overflow:hidden;padding:0}.sn-ebook__chapter-nav-button{align-items:stretch;background:transparent;border:1px solid var(--sn-chapter-border);border-radius:8px;display:flex;flex-direction:row;justify-content:space-between;text-align:left;width:100%}.sn-ebook__chapter-nav-button .chevron{display:block;margin:0 16px 0 0;transition:transform .3s ease-in-out}.sn-chapter-nav-item__link,.sn-ebook__chapter-nav-button>span{border:1px solid transparent;display:flex;flex-direction:column;padding:15px;text-decoration:none}.sn-chapter-nav-item__name{color:var(--sn-chapter-name);font-size:14px;font-weight:400;line-height:160%;text-transform:uppercase}.sn-chapter-nav-item__title{color:var(--sn-chapter-title);font-size:14px;font-weight:700;line-height:160%}.sn-chapter-nav-item__link.active,.sn-chapter-nav-item__link:hover{border-left:1px solid var(--sn-chapter-active-name)}.sn-chapter-nav-item__link.active .sn-chapter-nav-item__name,.sn-ebook__chapter-nav-button .sn-chapter-nav-item__name{color:var(--sn-chapter-active-name)}.sn-chapter-nav-item__link.active .sn-chapter-nav-item__title,.sn-ebook__chapter-nav-button .sn-chapter-nav-item__title{color:var(--sn-chapter-active-title)}@media screen and (max-width:767px){.sn-ebook__chapter-nav.open{pointer-events:none;position:relative;z-index:999}.sn-ebook__chapter-nav.open .sn-ebook__chapter-nav-button{background:#fff;border-bottom-left-radius:0;border-bottom-right-radius:0}.sn-ebook__chapter-nav.open .sn-ebook__chapter-nav-button .chevron{transform:rotate(180deg)}.sn-ebook__chapter-nav.open .sn-ebook__chapter-nav-listing{background:#fff;border-top-left-radius:0;border-top-right-radius:0;display:flex;left:0;margin-top:-1px;pointer-events:auto;position:absolute;right:0;z-index:9}}@media screen and (min-width:768px){.sn-ebook__chapter-nav{border:1px solid var(--sn-chapter-border);border-radius:20px;padding:30px 0}.sn-ebook__chapter-nav-header{padding:0 15px}.sn-ebook__chapter-nav-listing{border:none;border-radius:0;display:flex;overflow:none}.sn-ebook__chapter-nav-button{display:none}}@media screen and (min-width:1024px){.sn-ebook__chapter-nav-header{font-size:32px;margin-bottom:40px;padding:0 30px}.sn-ebook__chapter-nav-listing{gap:40px}.sn-chapter-nav-item__link{padding:0 30px}.sn-chapter-nav-item__name{font-size:18px;line-height:150%;margin-bottom:8px}.sn-chapter-nav-item__title{font-size:20px;line-height:120%}}