.Home_side-list__IshjN{margin:0;list-style-type:none;overflow:visible;padding:3px 0 2rem}.Home_home-layout__AdGrP{display:flex;flex-direction:column;height:100vh;overflow:hidden}.Home_gnb-header__oEIe7{position:fixed;top:0;left:0;right:0;height:60px;background:#fafafa;border-bottom:1px solid #d4d4d4;z-index:100;display:flex;align-items:center;padding:0 60px}.Home_main-layout__c3dDZ{display:flex;flex:1;padding-top:60px;background:#f5f5f5;overflow:hidden}@media only screen and (max-width:840px){.Home_main-layout__c3dDZ{padding-top:56px}}@media only screen and (max-width:480px){.Home_main-layout__c3dDZ{padding-top:48px}}.Home_content-container__z2EU4{flex:1;display:flex;flex-direction:column;background:#f5f5f5;transition:margin-left .3s ease;height:100%;overflow:hidden}.Home_no-side-bar__LrBYD{display:none}@media screen and (min-width:840px) and (max-width:1199px){.Home_content-container__z2EU4{margin-left:var(--sidebar-width,300px);margin-right:1rem}}@media screen and (min-width:1200px){.Home_content-container__z2EU4{margin-left:var(--sidebar-width,300px);margin-right:410px}.Home_book-centered-panel__8uKf3{position:relative;left:calc((var(--book-right-offset, 410px) - var(--sidebar-width, 300px)) / 2)}}@media only screen and (min-width:840px){.Home_content-container__z2EU4.Home_sidebar-collapsed__qNZqa,.Home_sidebar-collapsed__qNZqa .Home_content-container__z2EU4{margin-left:80px}.Home_no-side-container__KAZqF{flex:1;background:#fafafa;transition:margin-left .3s ease}.Home_side-bar__EbI1_,.Home_side-wrapper__Vn1Wv{position:fixed;top:60px;left:0;height:calc(100vh - 60px);width:300px;padding:20px;overflow-y:auto;transition:all .3s ease;scrollbar-width:thin;scrollbar-color:#d4d4d4 transparent;background:#ffffff;border-right:1px solid #e5e5e5}}@media only screen and (min-width:840px){.Home_side-bar__EbI1_::-webkit-scrollbar,.Home_side-wrapper__Vn1Wv::-webkit-scrollbar{width:4px}.Home_side-bar__EbI1_::-webkit-scrollbar-track,.Home_side-wrapper__Vn1Wv::-webkit-scrollbar-track{background:transparent}.Home_side-bar__EbI1_::-webkit-scrollbar-thumb,.Home_side-wrapper__Vn1Wv::-webkit-scrollbar-thumb{background-color:#d4d4d4;border-radius:3px}.Home_content-panel___2ZUf{flex:1;min-height:0;width:100%;max-width:740px;margin:20px auto;overflow-wrap:break-word;overflow-y:auto;background:#ffffff;border:none;border-radius:10px;padding:30px}.Home_content-panel___2ZUf::-webkit-scrollbar{width:4px}.Home_content-panel___2ZUf::-webkit-scrollbar-track{background:transparent}.Home_content-panel___2ZUf::-webkit-scrollbar-thumb{background-color:#e0e0e0;border-radius:2px}.Home_content-panel___2ZUf::-webkit-scrollbar-thumb:hover{background-color:#c0c0c0}.Home_selected-toc__kCInQ{background:#f5f5f5!important;border:1px solid #4338ca!important;color:#4338ca!important;font-weight:600;border-radius:6px}.Home_side-list__IshjN a:hover{background:#f5f5f5;color:#171717;border-radius:6px}.Home_desk-none__XgIcE,.Home_hamburger__XTGnS,.Home_mobile-book-logo__cuXRB{display:none}}@media only screen and (max-width:841px){.Home_home-layout__AdGrP{height:auto;min-height:100dvh;overflow-x:hidden;overflow-y:visible}.Home_main-layout__c3dDZ{background:#ffffff;overflow-x:hidden;overflow-y:visible}.Home_content-container__z2EU4{background:#ffffff;overflow:visible;min-width:0}.Home_side-bar__EbI1_{display:none}.Home_content-panel___2ZUf{flex:1;min-width:0;max-width:100%;height:auto;overflow-x:clip;overflow-y:visible;background:#ffffff;padding:16px 16px calc(16px + env(safe-area-inset-bottom, 0px))}.Home_mobile-side-bar__Vt5lb{position:fixed;top:0;bottom:0;left:0;width:70%;background-color:#ffffff;padding:1rem 12px 1rem 20px;z-index:200;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.Home_side-wrapper__Vn1Wv{position:fixed;top:0;bottom:0;left:0;right:0;background-color:rgba(0,0,0,.5);z-index:200}.Home_right-arrow__uTerb{display:none}.Home_mobile-book-logo__cuXRB{display:flex}}.Home_toc-header__K4QKT{padding:20px 12px 16px;border-bottom:1px solid #e5e5e5;background:#ffffff;position:sticky;top:0;z-index:10}.Home_toc-book-title__shPqo{font-size:16px;font-weight:600;color:#171717;margin-bottom:8px;line-height:1.6}.Home_toc-author-row__r6X6U{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#737373}.Home_toc-item__hs63F{position:relative;margin:4px 0;border-radius:6px;overflow:hidden;transition:all .2s cubic-bezier(.4,0,.2,1)}.Home_toc-link__v7CmZ{display:block;padding:10px 12px;color:#525252;text-decoration:none;font-size:12px;font-weight:400;line-height:1.6;border:1px solid transparent;border-radius:6px;transition:all .2s ease;position:relative}.Home_toc-link__v7CmZ:hover{background:#f5f5f5;border-color:#e5e5e5;color:#171717}.Home_toc-nested__CgIAg{margin-left:16px;padding-left:12px;border-left:2px solid #e5e5e5}.Home_toc-read__SlLeL{color:#737373;position:relative}.Home_toc-read__SlLeL:after{content:"";position:absolute;right:12px;top:50%;transform:translateY(-50%);width:8px;height:8px;background:#10b981;border-radius:50%}.Home_toc-free-badge__41I7S{display:inline-block;font-size:11px;padding:2px 6px;background:#4338ca;color:#fafafa;border-radius:4px;font-weight:600;margin-left:6px;text-transform:uppercase;letter-spacing:.3px}.CollapsibleSidebar_sidebar__KdIRd{position:fixed;top:var(--reader-header-offset,57px);left:0;width:300px;height:calc(100vh - var(--reader-header-offset, 57px));background:#ffffff;border-right:1px solid var(--tn-doc-border);backdrop-filter:none;display:flex;flex-direction:column;z-index:50;overflow:hidden;transition:top .28s ease-out,height .28s ease-out}.CollapsibleSidebar_sidebar__KdIRd.CollapsibleSidebar_scrollWithPage__5bRkX{position:absolute}.CollapsibleSidebar_sidebar__KdIRd.CollapsibleSidebar_collapsed__h_Vr7{width:80px;background:#ffffff}.CollapsibleSidebar_collapsedIcons__SDljR{display:flex;flex-direction:column;height:100%;padding:20px 10px;gap:20px;cursor:col-resize}.CollapsibleSidebar_collapsedIcons__SDljR>*{cursor:default}.CollapsibleSidebar_collapsedIcons__SDljR .CollapsibleSidebar_collapsedExpandArea__Klw__{cursor:col-resize}.CollapsibleSidebar_collapsedNewNoteButton__EHhPp{display:flex;align-items:center;justify-content:center;width:44px;height:44px;margin:0 auto;border-radius:10px;background:#ffffff;border:1.5px solid #0005e3;color:#0005E3;cursor:pointer;transition:all .2s ease}.CollapsibleSidebar_collapsedNewNoteButton__EHhPp:hover{background:#f0f2ff;transform:scale(1.05)}.CollapsibleSidebar_collapsedNewNoteButton__EHhPp:active{transform:scale(.95)}.CollapsibleSidebar_collapsedIconGroup__JPE7m{display:flex;flex-direction:column;gap:8px}.CollapsibleSidebar_collapsedIconButton__EXjAT{display:flex;align-items:center;justify-content:center;width:40px;height:40px;margin:0 auto;border-radius:8px;color:#737373;cursor:pointer;transition:all .2s ease;border:1px solid transparent}.CollapsibleSidebar_collapsedIconButton__EXjAT:hover{background:#ffffff;color:#525252;border-color:#e5e5e5}.CollapsibleSidebar_collapsedIconButton__EXjAT.CollapsibleSidebar_active__Hfr5m{background:#ffffff;color:#4338ca;border-color:#e5e5e5}.CollapsibleSidebar_collapsedIconButton__EXjAT.CollapsibleSidebar_bordered__K4vG5{border-color:#e5e5e5}.CollapsibleSidebar_collapsedDivider__a_H2h{width:100%;height:1px;background:#e5e5e5}.CollapsibleSidebar_collapsedExpandArea__Klw__{flex:1;cursor:col-resize;min-height:40px}.CollapsibleSidebar_collapsedFooter__TYz3Y{margin-top:auto}.CollapsibleSidebar_collapsedMyButton__kjC3t{display:flex;align-items:center;justify-content:center;width:40px;height:40px;margin:0 auto;background:transparent;color:#1A1A1A;font-size:14px;font-weight:700;border-radius:10px;cursor:pointer;transition:all .2s ease}.CollapsibleSidebar_collapsedMyButton__kjC3t:hover{background:#f0f0f0}.CollapsibleSidebar_collapsedIconsWrapper__Fjy0A{position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease;pointer-events:none}.CollapsibleSidebar_collapsedIconsWrapper__Fjy0A.CollapsibleSidebar_visible__PQzXs{opacity:1;visibility:visible;pointer-events:auto}.CollapsibleSidebar_sidebarContent__npnFV{flex:1;overflow-y:auto;overflow-x:hidden;padding:22px 14px 28px;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease}.CollapsibleSidebar_sidebarContent__npnFV.CollapsibleSidebar_visible__PQzXs{opacity:1;visibility:visible}.CollapsibleSidebar_sidebarContent__npnFV::-webkit-scrollbar{width:6px}.CollapsibleSidebar_sidebarContent__npnFV::-webkit-scrollbar-track{background:#f8fafc}.CollapsibleSidebar_sidebarContent__npnFV::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.CollapsibleSidebar_sidebarContent__npnFV::-webkit-scrollbar-thumb:hover{background:#94a3b8}.CollapsibleSidebar_sidebarFooter__0GJUN{border-top:1px solid var(--tn-doc-border);background:#ffffff;padding:10px 16px;flex-shrink:0}.CollapsibleSidebar_resizeHandle__BdjtI{position:absolute;top:0;right:0;width:8px;height:100%;cursor:col-resize;background:transparent;z-index:100;transition:background-color .2s ease}.CollapsibleSidebar_resizeHandle__BdjtI.CollapsibleSidebar_active__Hfr5m,.CollapsibleSidebar_resizeHandle__BdjtI:hover{background:rgba(67,56,202,.1)}.CollapsibleSidebar_resizeHandle__BdjtI:before{content:"";position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:3px;height:40px;background:#d4d4d4;border-radius:2px;opacity:0;transition:opacity .2s ease,background .2s ease}.CollapsibleSidebar_resizeHandle__BdjtI.CollapsibleSidebar_active__Hfr5m:before,.CollapsibleSidebar_resizeHandle__BdjtI:hover:before{opacity:1;background:#4338ca}.CollapsibleSidebar_sectionHeader__VrCKq{padding:20px 16px 8px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:#a3a3a3;white-space:nowrap;overflow:hidden}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_sectionHeader__VrCKq{padding:20px 8px 8px;text-align:center;font-size:9px}.CollapsibleSidebar_navItem__1xOT9{display:flex;align-items:center;padding:10px 16px;gap:12px;cursor:pointer;border-radius:8px;margin:2px 8px;color:#525252;font-size:14px;font-weight:500;transition:all .2s ease;white-space:nowrap;overflow:hidden}.CollapsibleSidebar_navItem__1xOT9:hover{background:#f5f5f5;color:#171717}.CollapsibleSidebar_navItem__1xOT9.CollapsibleSidebar_active__Hfr5m{background:#f5f5f5;color:#4338ca}.CollapsibleSidebar_navIcon__KWvJh{flex-shrink:0;width:20px;height:20px;display:flex;align-items:center;justify-content:center;color:#737373;transition:color .2s ease}.CollapsibleSidebar_navItem__1xOT9.CollapsibleSidebar_active__Hfr5m .CollapsibleSidebar_navIcon__KWvJh,.CollapsibleSidebar_navItem__1xOT9:hover .CollapsibleSidebar_navIcon__KWvJh{color:#4338ca}.CollapsibleSidebar_navLabel__9pecg{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;opacity:1;transition:opacity .2s ease,width .2s ease}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navItem__1xOT9{padding:10px;justify-content:center}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navLabel__9pecg{opacity:0;width:0;margin:0}.CollapsibleSidebar_collapsibleGroup__1NVOU{margin:2px 8px}.CollapsibleSidebar_collapsibleHeader__JsFi3{display:flex;align-items:center;padding:10px 16px;gap:8px;cursor:pointer;border-radius:8px;color:#525252;font-size:14px;font-weight:500;transition:all .2s ease;white-space:nowrap;overflow:hidden}.CollapsibleSidebar_collapsibleHeader__JsFi3:hover{background:#f5f5f5;color:#171717}.CollapsibleSidebar_expandIcon__JVk4i{flex-shrink:0;width:16px;height:16px;color:#a3a3a3;transition:transform .2s ease,color .2s ease}.CollapsibleSidebar_expandIcon__JVk4i.CollapsibleSidebar_expanded__fTiWx{transform:rotate(90deg)}.CollapsibleSidebar_collapsibleHeader__JsFi3:hover .CollapsibleSidebar_expandIcon__JVk4i{color:#525252}.CollapsibleSidebar_groupIcon__yjvgP{flex-shrink:0;width:20px;height:20px;color:#737373}.CollapsibleSidebar_groupLabel__ADDL_{flex:1;overflow:hidden;text-overflow:ellipsis}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_collapsibleHeader__JsFi3{padding:10px;justify-content:center}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_expandIcon__JVk4i,.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_groupLabel__ADDL_{display:none}.CollapsibleSidebar_collapsibleChildren__CyAu9{margin-left:20px;overflow:hidden;max-height:0;opacity:0;transition:max-height .3s ease,opacity .2s ease}.CollapsibleSidebar_collapsibleChildren__CyAu9.CollapsibleSidebar_expanded__fTiWx{max-height:500px;opacity:1}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_collapsibleChildren__CyAu9{display:none}.CollapsibleSidebar_childItem__loFHt{display:flex;align-items:center;padding:8px 16px;gap:8px;cursor:pointer;border-radius:6px;color:#737373;font-size:13px;transition:all .2s ease;white-space:nowrap;overflow:hidden}.CollapsibleSidebar_childItem__loFHt:hover{background:#f5f5f5;color:#525252}.CollapsibleSidebar_childItem__loFHt.CollapsibleSidebar_active__Hfr5m{background:#f5f5f5;color:#4338ca}.CollapsibleSidebar_divider__t8rze{width:100%;height:0;border-top:1px solid #e5e5e5;margin:12px 0}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_divider__t8rze{margin:12px 8px}.CollapsibleSidebar_topNavGrid__UOvCu{display:grid;grid-template-columns:1fr 1fr;-moz-column-gap:10px;column-gap:10px;row-gap:8px;width:100%}.CollapsibleSidebar_topNavButton__gFnSH{box-sizing:border-box;display:flex;flex-direction:row;align-items:center;padding:0 12px;gap:10px;height:44px;border:1px solid #a1a1a1;border-radius:6px;background:transparent;cursor:pointer;transition:all .2s ease;text-decoration:none;min-width:0}.CollapsibleSidebar_topNavButton__gFnSH:hover{background:#ffffff;border-color:#737373}.CollapsibleSidebar_topNavButton__gFnSH.CollapsibleSidebar_active__Hfr5m{background:#ffffff;border-color:#0005E3}.CollapsibleSidebar_topNavButtonIcon__KWZJj{display:flex;align-items:center;justify-content:center;width:20px;height:20px;color:#525252;flex-shrink:0}.CollapsibleSidebar_topNavButtonText__ke9qv{font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:400;font-size:12px;line-height:14px;color:#525252;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1}.CollapsibleSidebar_newPageButton__Nxl_t{display:flex;flex-direction:row;align-items:center;justify-content:center;gap:8px;padding:14px 20px;width:100%;height:48px;background:#ffffff;border:1.5px solid #0005e3;border-radius:10px;cursor:pointer;transition:all .2s ease;text-decoration:none;color:#0005E3;font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:600;font-size:14px;margin-bottom:8px}.CollapsibleSidebar_newPageButton__Nxl_t:hover{background:#f0f2ff}.CollapsibleSidebar_mySpaceButton__wGePS{display:flex;flex-direction:row;justify-content:space-between;align-items:center;padding:10px 10px 10px 16px;width:100%;height:40px;background:transparent;border-radius:10px;cursor:pointer;transition:all .2s ease;text-decoration:none}.CollapsibleSidebar_mySpaceButton__wGePS:hover{background:#f0f0f0}.CollapsibleSidebar_mySpaceButton__wGePS.CollapsibleSidebar_active__Hfr5m{background:transparent}.CollapsibleSidebar_mySpaceButtonText__NSu5_{font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:700;font-size:16px;line-height:19px;color:#1A1A1A}.CollapsibleSidebar_mySpaceButtonIcon__ssaqD{width:20px;height:20px;color:#1A1A1A}.CollapsibleSidebar_sectionHeaderRow__fBGEy{display:flex;flex-direction:row;align-items:center;padding:10px;gap:6px;width:100%;border-radius:10px}.CollapsibleSidebar_sectionHeaderActions__J8GjP{margin-left:auto;display:flex;align-items:center;gap:6px}.CollapsibleSidebar_sectionActionButton__Re4_6{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:6px;border:1px solid transparent;background:transparent;color:#525252;cursor:pointer;padding:0;transition:background .2s ease,color .2s ease,border-color .2s ease}.CollapsibleSidebar_sectionActionButton__Re4_6:hover{background:#f5f5f5;color:#262626;border-color:#e5e5e5}.CollapsibleSidebar_sectionActionButton__Re4_6:active{transform:scale(.98)}.CollapsibleSidebar_sectionHeaderRow__fBGEy.CollapsibleSidebar_clickable___YntZ{cursor:pointer;transition:background .2s ease}.CollapsibleSidebar_sectionHeaderRow__fBGEy.CollapsibleSidebar_clickable___YntZ:hover{background:#f5f5f5}.CollapsibleSidebar_expandIcon__JVk4i{transition:transform .2s ease;transform:rotate(-90deg)}.CollapsibleSidebar_expandIcon__JVk4i.CollapsibleSidebar_expanded__fTiWx{transform:rotate(0deg)}.CollapsibleSidebar_sectionHeaderIcon__qcZHw{width:16px;height:16px;flex-shrink:0}.CollapsibleSidebar_sectionHeaderIcon__qcZHw.CollapsibleSidebar_favorite__tEUPO{color:#0005E3}.CollapsibleSidebar_sectionHeaderIcon__qcZHw.CollapsibleSidebar_pinned__1R95i{color:#737373}.CollapsibleSidebar_sectionHeaderTitle__rTB86{font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:600;font-size:14px;line-height:16px;text-transform:capitalize}.CollapsibleSidebar_sectionHeaderTitle__rTB86.CollapsibleSidebar_favorite__tEUPO{color:#0005E3}.CollapsibleSidebar_sectionHeaderTitle__rTB86.CollapsibleSidebar_pinned__1R95i{color:#737373}.CollapsibleSidebar_folderItem__e54X0{display:flex;flex-direction:row;align-items:center;padding:10px 10px 10px 16px;gap:6px;width:100%;height:40px;border-radius:10px;cursor:pointer;transition:all .2s ease;text-decoration:none}.CollapsibleSidebar_folderItem__e54X0:hover{background:#f5f5f5}.CollapsibleSidebar_folderItem__e54X0.CollapsibleSidebar_active__Hfr5m{background:#ebebeb}.CollapsibleSidebar_folderItemIcon__F6R0Q{width:20px;height:20px;color:#a1a1a1;flex-shrink:0;transition:transform .2s ease}.CollapsibleSidebar_folderItemIcon__F6R0Q.CollapsibleSidebar_expanded__fTiWx{transform:rotate(90deg)}.CollapsibleSidebar_folderItemText__uvXH4{flex:1;font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:400;font-size:16px;line-height:19px;color:#262626;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.CollapsibleSidebar_pageItem__XPnP6{display:flex;flex-direction:row;align-items:center;padding:10px 10px 10px 16px;gap:6px;width:100%;min-width:0;height:40px;border-radius:10px;cursor:pointer;transition:all .2s ease;text-decoration:none}.CollapsibleSidebar_pageItem__XPnP6:hover{background:#f5f5f5}.CollapsibleSidebar_pageItem__XPnP6.CollapsibleSidebar_active__Hfr5m{background:#ebebeb}.CollapsibleSidebar_pageItemIcon__ACzwg{width:20px;height:20px;color:#a1a1a1;flex-shrink:0}.CollapsibleSidebar_pageItemText__u_VuY{flex:1;font-family:Pretendard,-apple-system,BlinkMacSystemFont,sans-serif;font-weight:400;font-size:16px;line-height:1.4;color:#262626;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.CollapsibleSidebar_sidebarSection__Df3af{display:flex;flex-direction:column;align-items:stretch;padding:0;width:100%;gap:0}.CollapsibleSidebar_sidebarFooterLink__HNDK_{display:flex;align-items:center;gap:8px;padding:10px 14px;font-size:13px;font-weight:500;color:#525252;cursor:pointer;border-radius:8px;transition:background .15s ease}.CollapsibleSidebar_sidebarFooterLink__HNDK_:hover{background:#f5f5f5}.CollapsibleSidebar_sidebarFooterLink__HNDK_.CollapsibleSidebar_active__Hfr5m{color:#d8744a;font-weight:600}.CollapsibleSidebar_sidebarEmptySpace__7X06d{flex:1;min-height:100px}.CollapsibleSidebar_emptyMessage__aVmlJ{padding:10px 14px;font-size:13px;color:#a1a1a1}.CollapsibleSidebar_showMoreLink__PTtUH{padding:8px 16px;font-size:13px;color:#737373;cursor:pointer;transition:color .2s ease}.CollapsibleSidebar_showMoreLink__PTtUH:hover{color:#525252}.CollapsibleSidebar_sectionChildren__oKmg0{overflow:hidden;max-height:0;opacity:0;transition:max-height .3s ease,opacity .2s ease}.CollapsibleSidebar_sectionChildren__oKmg0.CollapsibleSidebar_expanded__fTiWx{max-height:500px;opacity:1}.CollapsibleSidebar_navItem__1xOT9[data-tooltip]{position:relative}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navItem__1xOT9:after{content:attr(data-tooltip);position:absolute;left:calc(100% + 8px);top:50%;transform:translateY(-50%);background:#262626;color:#ffffff;padding:6px 12px;border-radius:6px;font-size:13px;font-weight:500;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .2s ease;z-index:1000}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navItem__1xOT9:hover:after{opacity:1}@media only screen and (max-width:840px){.CollapsibleSidebar_sidebar__KdIRd{position:fixed;top:0;width:280px!important;height:100vh;z-index:200;box-shadow:none;transform:translateX(-100%);transition:transform .3s ease}.CollapsibleSidebar_sidebar__KdIRd.CollapsibleSidebar_scrollWithPage__5bRkX{position:fixed;top:0;height:100vh}.CollapsibleSidebar_sidebar__KdIRd.CollapsibleSidebar_mobileVisible__dyNhM{transform:translateX(0);box-shadow:4px 0 20px rgba(0,0,0,.15)}.CollapsibleSidebar_overlay__4qhPD{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:199;opacity:0;pointer-events:none;transition:opacity .3s ease}.CollapsibleSidebar_overlay__4qhPD.CollapsibleSidebar_visible__PQzXs{opacity:1;pointer-events:auto}.CollapsibleSidebar_resizeHandle__BdjtI{display:none}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_expandIcon__JVk4i,.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_groupLabel__ADDL_,.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navLabel__9pecg{display:block;opacity:1;width:auto}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_collapsibleHeader__JsFi3,.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_navItem__1xOT9{padding:10px 16px;justify-content:flex-start}.CollapsibleSidebar_collapsed__h_Vr7 .CollapsibleSidebar_collapsibleChildren__CyAu9{display:block}}.BottomNav_bottom-container__4j2cu{background:transparent}.BottomNav_bottom-inner__ZXvnm{max-width:860px;margin:0 auto;padding:12px 16px;display:grid;grid-template-columns:1fr auto 1fr;gap:12px;align-items:center}.BottomNav_bottom-inner-2row__jcEZw{max-width:860px;margin:0 auto;padding:10px 16px 14px}.BottomNav_row-labels__YqQR8{display:grid;grid-template-columns:1fr 1fr;gap:8px;color:#64748b;font-size:12px;margin-bottom:8px}.BottomNav_label-left__zcGBz{text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.BottomNav_label-right__DIvuP{text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.BottomNav_row-buttons__TzWpN{display:grid;grid-template-columns:1fr 1fr;gap:12px}.BottomNav_doc-inner__mNLrT{width:100%;padding:8px 0 16px}.BottomNav_nav-grid__mHCs9{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.BottomNav_nav-card-next__SgmV7{justify-self:end}.BottomNav_nav-card__biRHY{border:1.5px solid #cbd5e1;border-radius:12px;background:#ffffff;padding:16px 20px;cursor:pointer;transition:all .25s cubic-bezier(.4,0,.2,1);width:100%;min-width:0}.BottomNav_nav-card__biRHY:hover{border-color:#3b82f6;transform:translateY(-2px);background:linear-gradient(135deg,#ffffff,#f8fafc)}.BottomNav_caption-left__VzR5h,.BottomNav_caption-right__RZfaL{font-size:12px;color:#64748b;margin-bottom:8px;font-weight:600;text-transform:uppercase;letter-spacing:.5px}.BottomNav_nav-title-left__5qy8a,.BottomNav_nav-title-right__2cQ2z{color:#1e293b;font-weight:600;font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.4}.BottomNav_nav-card__biRHY:hover .BottomNav_nav-title-left__5qy8a,.BottomNav_nav-card__biRHY:hover .BottomNav_nav-title-right__2cQ2z{color:#3b82f6}.BottomNav_page-nav__NE0TB{display:flex;align-items:center;gap:8px;border:1px solid rgba(2,8,23,.12);padding:10px 12px;-webkit-user-select:none;-moz-user-select:none;user-select:none;border-radius:10px;cursor:pointer;background:#ffffff;box-shadow:0 2px 10px rgba(2,8,23,.06);color:#0f172a}.BottomNav_page-nav__NE0TB:hover{border-color:rgba(2,8,23,.2)}.BottomNav_title__bvG34{font-size:14px;color:#334155}.BottomNav_center-dot__OYo5C{justify-self:center;width:6px;height:6px;border-radius:9999px;background:#94a3b8}.BottomNav_disabled__D6JqK{opacity:.5;pointer-events:none;filter:grayscale(.5)}@media (max-width:640px){.BottomNav_nav-grid__mHCs9{grid-template-columns:1fr;gap:12px}.BottomNav_nav-card-next__SgmV7{justify-self:stretch}.BottomNav_doc-inner__mNLrT{padding:4px 0 8px}.BottomNav_nav-card__biRHY{border-radius:16px;padding:14px 16px;background:linear-gradient(180deg,#ffffff,#fbfdff);box-shadow:0 8px 20px rgba(15,23,42,.04)}.BottomNav_caption-left__VzR5h,.BottomNav_caption-right__RZfaL{margin-bottom:6px;font-size:11px;letter-spacing:.08em}.BottomNav_nav-title-left__5qy8a,.BottomNav_nav-title-right__2cQ2z{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.45}}@media (min-width:640px){.BottomNav_doc-inner__mNLrT{padding-left:0;padding-right:0}}@media (min-width:1024px){.BottomNav_doc-inner__mNLrT{padding-left:0;padding-right:0}}@media (max-width:840px){.BottomNav_bottom-inner__ZXvnm{max-width:none;padding:10px 12px;grid-template-columns:1fr 1fr}.BottomNav_bottom-inner-2row__jcEZw{max-width:none;padding:10px 12px 14px}.BottomNav_center-dot__OYo5C{display:none}}.Book_heroSection__ATaha{background:linear-gradient(180deg,#f8fbff,#f4f7fb);position:relative;overflow:hidden;padding:60px 0 64px;border-bottom:1px solid var(--tn-doc-border)}.Book_heroContainer__oYNfb{max-width:960px;margin:0 auto;padding:0 24px;display:flex;flex-direction:row;gap:48px;align-items:flex-start;position:relative;z-index:1}.Book_bookCoverWrapper__HzwCO{flex-shrink:0}.Book_bookCoverFloat__ns91z{width:192px;height:auto;border-radius:18px;box-shadow:0 20px 40px rgba(15,23,42,.12);transition:all .3s ease}.Book_bookCoverFloat__ns91z:hover{transform:translateY(-2px);box-shadow:0 24px 44px rgba(15,23,42,.16)}.Book_bookCoverPlaceholderHero__NdziT{width:192px;height:270px;border-radius:18px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;box-shadow:0 20px 40px rgba(15,23,42,.12);background:#ffffff}.Book_bookTitlePlaceholderHero__5l0jp{font-size:15px;text-align:center;padding:0 20px;word-break:keep-all;font-weight:600;line-height:1.4;color:#6b7280}.Book_heroMetadata__HBQRI{color:var(--tn-doc-text-strong);flex:1;min-width:0}.Book_heroEyebrowRow__LrAnd{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:14px}.Book_heroKicker__sDcta,.Book_heroMetaPill__2tTC7{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}.Book_heroKicker__sDcta{background:var(--tn-doc-accent-soft);color:var(--tn-doc-accent)}.Book_heroMetaPill__2tTC7{background:var(--tn-doc-surface-muted);border:1px solid var(--tn-doc-border);color:var(--tn-doc-text-muted)}.Book_heroTitle__ECxC6{font-size:clamp(2rem,3.8vw,3.2rem);font-weight:800;line-height:1.1;margin-bottom:16px;color:var(--tn-doc-text-strong);letter-spacing:-.04em}.Book_heroDescription__0HqrV{margin:0 0 22px;color:var(--tn-doc-text);font-size:16px;line-height:1.75;max-width:60ch}.Book_authorCard__dyvMd{display:flex;align-items:center;gap:10px;margin-bottom:24px}.Book_authorAvatar__tJTr1{width:28px;height:28px;border-radius:50%;overflow:hidden;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;color:white;flex-shrink:0}.Book_authorAvatarImage__ZbOOf{width:100%;height:100%;-o-object-fit:cover;object-fit:cover;display:block}.Book_authorInfo__elGda{display:flex;align-items:center;gap:6px}.Book_authorName__G77Ri{font-size:14px;font-weight:500;color:#111827}.Book_authorNameLink__yKrJB{color:#111827;text-decoration:none;transition:color .2s ease}.Book_authorNameLink__yKrJB:hover{color:#374151;text-decoration:underline}.Book_editLinkHero__TnT54{display:inline-flex;align-items:center;font-size:12px;color:#6b7280;text-decoration:none;padding:4px 10px;background:transparent;border:1px solid #d1d5db;border-radius:4px;transition:all .2s ease}.Book_editLinkHero__TnT54:hover{background:#f3f4f6;color:#374151;border-color:#9ca3af}.Book_priceHero__ylPQa{margin:16px 0}.Book_priceAmount__a2Y_L{font-size:26px;font-weight:800;color:var(--tn-doc-text-strong);line-height:1}.Book_previewNoticeCard__0HtlM{margin-top:18px;padding:16px 18px;border:1px solid var(--tn-doc-border);border-radius:18px;background:rgba(248,250,252,.9);box-shadow:0 12px 24px rgba(15,23,42,.05)}.Book_previewNoticeLabel__aqtt1{display:inline-flex;align-items:center;margin-bottom:8px;font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--tn-doc-text-muted)}.Book_previewNoticeTitle__Xi5Zq{font-size:15px;font-weight:700;line-height:1.45;color:var(--tn-doc-text-strong)}.Book_previewNoticeMeta__YxLQm{margin-top:6px;font-size:14px;line-height:1.65;color:var(--tn-doc-text)}.Book_heroActions__T8u1e{display:flex;flex-direction:row;gap:16px;align-items:center;margin-top:8px}.Book_ctaPrimary__1L_eX{background:var(--tn-doc-text-strong);color:white;font-size:16px;font-weight:600;padding:16px 28px;border-radius:14px;border:none;cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;min-width:180px}.Book_ctaPrimary__1L_eX:hover{background:#1e293b;box-shadow:0 14px 28px rgba(15,23,42,.18)}.Book_ctaPrimary__1L_eX:active{background:#0f172a}.Book_ctaSecondary__t6g9r{display:inline-flex;align-items:center;justify-content:center;min-width:180px;padding:15px 24px;border:1px solid var(--tn-doc-border);border-radius:14px;background:rgba(255,255,255,.92);color:var(--tn-doc-text-strong);font-size:15px;font-weight:600;text-decoration:none;transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease}.Book_ctaSecondary__t6g9r:hover{background:#ffffff;border-color:var(--tn-doc-border-strong);transform:translateY(-1px);box-shadow:0 12px 24px rgba(15,23,42,.08)}.Book_ctaSecondary__t6g9r:active{transform:translateY(0)}.Book_shareSectionBottom__rFS7Y{border-top:1px solid var(--tn-doc-border);padding:32px 0;background:#f8fafc}.Book_shareSectionContainer__l7Uo_{max-width:900px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:flex-start;gap:16px}.Book_shareSectionLabel__F5jTx{font-size:14px;font-weight:500;color:#6b7280}.Book_footerWrapper__txuoR{max-width:900px;margin:0 auto 100px;padding:24px}.Book_mobileFixedBottom__ighlV{display:none}@media (max-width:768px){.Book_mobileFixedBottom__ighlV{display:block;position:fixed;bottom:0;left:0;right:0;padding:12px 16px calc(12px + env(safe-area-inset-bottom));background:rgba(255,255,255,.95);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--tn-doc-border);box-shadow:0 -4px 20px rgba(0,0,0,.08);z-index:100;transform:translateY(100%);transition:transform .4s cubic-bezier(.16,1,.3,1)}.Book_mobileFixedBottomVisible__aO6k5{transform:translateY(0)}}.Book_mobileBottomBtn__lVf2q{display:flex;align-items:center;justify-content:center;width:100%;padding:15px 24px;background:var(--tn-doc-text-strong);color:white;font-size:16px;font-weight:600;border:none;border-radius:12px;cursor:pointer;text-decoration:none;transition:background .2s ease;-webkit-tap-highlight-color:transparent}.Book_mobileBottomBtn__lVf2q:hover{background:#1e293b}.Book_mobileBottomBtn__lVf2q:active{background:#0f172a}.Book_mobileBottomBtn__lVf2q:disabled{background:#9ca3af;cursor:not-allowed}.Book_stickyCTA__VQNRi{position:fixed;bottom:0;left:0;right:0;background:rgba(255,255,255,.96);border-top:1px solid var(--tn-doc-border);box-shadow:0 -4px 20px rgba(0,0,0,.1);z-index:1000;transform:translateY(100%);transition:transform .4s cubic-bezier(.16,1,.3,1)}.Book_stickyCTAVisible__T9Gwb{transform:translateY(0)}.Book_stickyCTAContainer___521k{max-width:1200px;margin:0 auto;padding:14px 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}.Book_stickyCTAInfo__Cbnu6{display:flex;align-items:center;gap:16px;flex:1;min-width:0}.Book_stickyCTACover____i4Z{width:48px;height:68px;border-radius:6px;-o-object-fit:cover;object-fit:cover;box-shadow:0 2px 8px rgba(0,0,0,.15);flex-shrink:0}.Book_stickyCTACoverPlaceholder__ulEas{width:48px;height:68px;border-radius:6px;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:#f0f0f0}.Book_stickyCTAText__GK1nd{flex:1;min-width:0}.Book_stickyCTATitle__h4J5z{font-size:15px;font-weight:600;color:#111827;margin-bottom:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.Book_stickyCTAPrice__E1v7z{font-size:18px;font-weight:700;color:var(--tn-doc-accent)}.Book_stickyCTAButton__vfd77{background:var(--tn-doc-text-strong);color:white;border:none;border-radius:10px;padding:14px 28px;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .2s ease;flex-shrink:0;text-decoration:none}.Book_stickyCTAButton__vfd77:hover{background:#1e293b;transform:translateY(-1px);box-shadow:0 10px 24px rgba(15,23,42,.18)}.Book_tocSectionNew__xIdu6{background:#ffffff;padding:32px 0 56px}.Book_tocContainerNew__xfHIq{max-width:900px;margin:0 auto;padding:0 24px}.Book_tocHeaderNew__ZZcG0{text-align:left;margin-bottom:22px}.Book_tocTitleNew__onWZL{font-size:30px;font-weight:800;color:var(--tn-doc-text-strong);margin-bottom:8px;letter-spacing:-.03em}.Book_tocSubtitleNew__iogv9{font-size:15px;color:var(--tn-doc-text-muted)}.Book_tocListNew__CAJQ7{display:flex;flex-direction:column;gap:10px}.Book_tocCardItem__ZJWgU{background:white;border:1px solid var(--tn-doc-border);border-radius:18px;overflow:hidden;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease}.Book_tocCardItem__ZJWgU:hover{border-color:var(--tn-doc-border-strong);box-shadow:0 16px 28px rgba(15,23,42,.06);transform:translateY(-1px)}.Book_tocCardLink__PvNOb{display:flex;align-items:center;padding:18px 22px;text-decoration:none;color:inherit;gap:16px;transition:all .2s ease}.Book_tocCardLink__PvNOb:hover{background:#fafcff}.Book_tocCardLockedLink__XnhsM{display:flex;align-items:center;padding:18px 22px;text-decoration:none;color:inherit;gap:16px;transition:all .2s ease;background:linear-gradient(135deg,#fcfcff,#faf7ff)}.Book_tocCardLockedLink__XnhsM:hover{background:linear-gradient(135deg,#f8f4ff,#f3e8ff);text-decoration:none}.Book_tocCardLocked__MykjZ{display:flex;align-items:center;padding:18px 22px;gap:16px;color:#9ca3af;cursor:not-allowed;background:#fafafa}.Book_tocNumberBadge__BqyGl{width:40px;height:40px;background:var(--tn-doc-surface-muted);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:#6b7280;flex-shrink:0;transition:all .3s ease}.Book_tocCardLink__PvNOb:hover .Book_tocNumberBadge__BqyGl{background:var(--tn-doc-accent-soft);color:var(--tn-doc-accent)}.Book_tocCardContent__AepZq{flex:1;min-width:0}.Book_tocCardTitle__1NE1f{font-size:15px;font-weight:600;color:var(--tn-doc-text);line-height:1.45;transition:color .2s ease}.Book_tocCardLink__PvNOb:hover .Book_tocCardTitle__1NE1f{color:var(--tn-doc-text-strong)}.Book_tocCardLockedLink__XnhsM .Book_tocCardTitle__1NE1f{color:var(--tn-doc-text-muted)}.Book_tocCardLockedLink__XnhsM:hover .Book_tocCardTitle__1NE1f{color:#4b5563}.Book_tocCardLocked__MykjZ .Book_tocCardTitle__1NE1f{color:#9ca3af}.Book_tocCardBadges__UkNOW{display:flex;align-items:center;gap:10px;flex-shrink:0}.Book_tocFreeBadge__Xe0ab{background:#ecfdf3;color:#166534;font-size:12px;padding:5px 12px;border-radius:999px;font-weight:600;text-transform:uppercase;letter-spacing:.3px}.Book_tocMembershipBadge__66_G4{background:#f1f5f9;color:#475569;font-size:12px;padding:5px 12px;border-radius:999px;font-weight:700;letter-spacing:-.01em}.Book_tocLockIcon__eM3zy{color:#d1d5db;font-size:20px}.Book_tocLockButton__C49ZG{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:999px;color:inherit;text-decoration:none;transition:background-color .2s ease,transform .2s ease}.Book_tocLockButton__C49ZG:hover{background:rgba(59,130,246,.08);transform:scale(1.05);text-decoration:none}.Book_tocLockButton__C49ZG:hover .Book_tocLockIcon__eM3zy{color:#6b7280}.Book_descriptionSectionNew__VXb6U{background:white;padding:12px 0 24px}.Book_descriptionContainerNew__hPwBY{max-width:900px;margin:0 auto;padding:0 24px}.Book_descriptionHeaderNew__E8sL_{text-align:left;margin-bottom:16px}.Book_descriptionTitleNew__4Tnba{font-size:30px;font-weight:800;color:var(--tn-doc-text-strong);margin-bottom:6px;letter-spacing:-.03em}.Book_descriptionContentNew__Q8yh9{background:var(--tn-doc-surface);border-radius:24px;padding:28px 30px;border:1px solid var(--tn-doc-border);box-shadow:0 16px 34px rgba(15,23,42,.05)}.Book_markdownContentNew__Nahp1{font-size:16px;line-height:1.82;color:var(--tn-doc-text)}.Book_markdownContentNew__Nahp1 p{margin:12px 0}.Book_markdownContentNew__Nahp1 h2{font-size:24px;font-weight:700;color:var(--tn-doc-text-strong);margin-top:40px;margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--tn-doc-border)}.Book_markdownContentNew__Nahp1 h3{font-size:20px;font-weight:600;color:var(--tn-doc-text-strong);margin-top:32px;margin-bottom:12px}.Book_markdownContentNew__Nahp1 ol,.Book_markdownContentNew__Nahp1 ul{margin:20px 0;padding-left:24px}.Book_markdownContentNew__Nahp1 li{margin:10px 0;line-height:1.7}.Book_markdownContentNew__Nahp1 li::marker{color:var(--tn-doc-accent);font-weight:600}.Book_markdownContentNew__Nahp1 blockquote{border-left:3px solid var(--tn-doc-accent);background:#fbfdff;padding:20px 24px;margin:28px 0;border-radius:0 12px 12px 0;box-shadow:0 1px 3px rgba(0,0,0,.05);font-style:italic;color:var(--tn-doc-text)}.Book_markdownContentNew__Nahp1 strong{color:#111827;font-weight:700}.Book_markdownContentNew__Nahp1 code{background:var(--tn-doc-surface-muted);color:var(--tn-doc-accent);padding:3px 8px;border-radius:6px;font-family:Monaco,Menlo,monospace;font-size:15px}.Book_markdownContentNew__Nahp1 pre{background:#0f172a;color:#e2e8f0;padding:24px;border-radius:12px;overflow-x:auto;margin:28px 0}.Book_markdownContentNew__Nahp1 pre code{background:transparent;color:inherit;padding:0}.Book_filesSectionNew__Ay30L{background:#f8fafc;padding:56px 0}.Book_filesContainerNew__eApn5{max-width:900px;margin:0 auto;padding:0 24px}.Book_filesHeaderNew__bE1TP{text-align:left;margin-bottom:22px}.Book_filesTitleNew__pH8kk{font-size:30px;font-weight:800;color:var(--tn-doc-text-strong);margin-bottom:8px;letter-spacing:-.03em}.Book_filesSubtitleNew__ztc89{font-size:15px;color:var(--tn-doc-text-muted)}.Book_filesGridNew__ATmQV{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}.Book_fileCardNew__JxgC7{background:white;border:1px solid var(--tn-doc-border);border-radius:22px;padding:24px;transition:border-color .2s ease,transform .2s ease,box-shadow .2s ease;box-shadow:0 14px 30px rgba(15,23,42,.05)}.Book_fileCardNew__JxgC7:hover{border-color:var(--tn-doc-border-strong);box-shadow:0 20px 36px rgba(15,23,42,.08);transform:translateY(-2px)}.Book_fileCardNew__JxgC7.Book_locked__vShbH{opacity:.7}.Book_fileCardIcon__XpG6w{width:52px;height:52px;background:var(--tn-doc-surface-muted);border:1px solid var(--tn-doc-border);border-radius:16px;display:flex;align-items:center;justify-content:center;color:var(--tn-doc-accent);font-size:24px;margin-bottom:16px}.Book_fileCardNew__JxgC7.Book_locked__vShbH .Book_fileCardIcon__XpG6w{background:#e5e7eb;color:#9ca3af}.Book_fileCardName__BQpVD{font-size:15px;font-weight:600;color:var(--tn-doc-text-strong);margin-bottom:16px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.Book_fileDownloadBtn__ecIOd{background:var(--tn-doc-text-strong);color:white;border:none;border-radius:14px;padding:12px 20px;font-size:14px;font-weight:600;cursor:pointer;width:100%;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:8px}.Book_fileDownloadBtn__ecIOd:hover{background:#1e293b}.Book_fileLockedBtn__y6E1m{background:var(--tn-doc-surface-muted);color:var(--tn-doc-text-muted);border:1px solid var(--tn-doc-border);border-radius:14px;padding:12px 20px;font-size:14px;font-weight:600;width:100%;text-align:center;display:flex;align-items:center;justify-content:center;gap:8px}@media (max-width:768px){.Book_heroSection__ATaha{padding:40px 0 48px}.Book_heroContainer__oYNfb{flex-direction:column;align-items:center;gap:24px;text-align:left}.Book_bookCoverWrapper__HzwCO{display:none}.Book_heroMetadata__HBQRI{display:flex;flex-direction:column;align-items:flex-start}.Book_heroTitle__ECxC6{font-size:2.25rem;margin-bottom:16px}.Book_heroDescription__0HqrV{font-size:15px}.Book_authorCard__dyvMd{justify-content:flex-start;margin-bottom:16px}.Book_priceHero__ylPQa{margin:12px 0}.Book_priceAmount__a2Y_L{font-size:22px}.Book_heroActions__T8u1e{flex-direction:column;align-items:stretch;width:100%;margin-top:4px}.Book_previewNoticeCard__0HtlM{width:100%;padding:15px 16px;border-radius:16px}.Book_ctaPrimary__1L_eX{width:100%;max-width:none;padding:14px 28px;font-size:15px;min-width:unset}.Book_ctaSecondary__t6g9r{width:100%;min-width:unset;padding:14px 20px;font-size:14px}.Book_stickyCTAContainer___521k{flex-direction:column;padding:12px 16px;gap:12px}.Book_stickyCTAInfo__Cbnu6{width:100%}.Book_stickyCTACover____i4Z{width:40px;height:56px}.Book_stickyCTATitle__h4J5z{font-size:14px}.Book_stickyCTAPrice__E1v7z{font-size:16px}.Book_stickyCTAButton__vfd77{width:100%;padding:14px 24px}.Book_tocSectionNew__xIdu6{padding:28px 0 44px}.Book_tocTitleNew__onWZL{font-size:24px}.Book_tocCardLink__PvNOb,.Book_tocCardLockedLink__XnhsM,.Book_tocCardLocked__MykjZ{padding:16px 20px}.Book_tocNumberBadge__BqyGl{width:40px;height:40px;font-size:14px}.Book_tocCardTitle__1NE1f{font-size:15px}.Book_descriptionSectionNew__VXb6U{padding:16px 0}.Book_descriptionTitleNew__4Tnba{font-size:24px}.Book_descriptionContentNew__Q8yh9{padding:20px 18px}.Book_markdownContentNew__Nahp1{font-size:16px}.Book_markdownContentNew__Nahp1 h2{font-size:20px}.Book_markdownContentNew__Nahp1 h3{font-size:18px}.Book_filesSectionNew__Ay30L{padding:48px 0}.Book_filesTitleNew__pH8kk{font-size:24px}.Book_filesGridNew__ATmQV{grid-template-columns:1fr;gap:16px}.Book_stickyCTA__VQNRi{display:none}}.Book_pageListSection__4PVh7{margin-top:24px}.Book_pageListTitle__v_xEE{font-size:16px;font-weight:600;color:#374151;margin-bottom:12px;display:flex;align-items:center;gap:8px}.Book_pageCount__nEtA4{font-size:14px;font-weight:400;color:#9ca3af}.Book_pageList__9cZoq{display:flex;flex-direction:column;gap:2px}.Book_pageCard__aEhxP{display:flex;align-items:center;padding:12px 16px;border-radius:8px;cursor:pointer;transition:background-color .15s ease;background:transparent}.Book_pageCard__aEhxP:hover{background-color:#f3f4f6}.Book_pageCardContent__xKXo4{display:flex;align-items:center;justify-content:space-between;width:100%;gap:12px}.Book_pageTitle__ZLLo3{font-size:14px;color:#374151;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.Book_pageNumber__r9Xg4{font-size:12px;color:#9ca3af;flex-shrink:0}.Book_ctaPageWrapper__gzzzL{min-height:100vh;background:linear-gradient(180deg,#fafbfc,#ffffff)}.Book_tocMoreIndicator__wn0Il{display:flex;align-items:center;justify-content:center;padding:16px 24px;color:#6b7280;font-size:14px;font-weight:500;background:linear-gradient(180deg,transparent,#f9fafb);border-top:1px dashed #e5e7eb;margin-top:8px}.Book_ctaBottomSection__Dl5tV{background:linear-gradient(135deg,#f8fafc,#f1f5f9);padding:48px 24px;border-top:1px solid #e2e8f0}.Book_ctaBottomContainer__DUiLZ{max-width:600px;margin:0 auto;text-align:center;display:flex;flex-direction:column;align-items:center;gap:20px}.Book_ctaBottomText__mtXVW{font-size:18px;color:#475569;font-weight:500;margin:0}@media (max-width:768px){.Book_ctaBottomSection__Dl5tV{padding:32px 16px}.Book_ctaBottomText__mtXVW{font-size:16px}}.Book_importButton__lwIW0{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;color:#475569;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s ease}.Book_importButton__lwIW0:hover{background:#f1f5f9;border-color:#cbd5e1;color:#334155}.Book_importButton__lwIW0 svg{flex-shrink:0}