@media (max-width:640px){.readkit-fab,.readkit-fab *,.readkit-fab-menu,.readkit-fab-menu *,.readkit-mobile-tts-panel,.readkit-mobile-tts-panel *{box-sizing:border-box;text-decoration:none;letter-spacing:normal;text-transform:none;word-spacing:normal;text-indent:0;text-shadow:none;float:none;clear:none;list-style:none;vertical-align:baseline;font-style:normal}.readkit-fab a,.readkit-fab-menu a,.readkit-mobile-tts-panel a{color:inherit;text-decoration:none;outline:0;box-shadow:none}.readkit-fab button,.readkit-fab-menu button,.readkit-mobile-tts-panel button,.readkit-mobile-tts-panel select{font-family:inherit;font-size:inherit;line-height:inherit;appearance:none;-webkit-appearance:none;box-shadow:none}.readkit-fab svg,.readkit-fab-menu svg,.readkit-mobile-tts-panel svg{overflow:visible;vertical-align:middle;max-width:none;max-height:none}#readkit-toolbar{display:none!important}#readkit-toolbar.readkit-mobile-visible{display:block!important;position:fixed;bottom:0;left:0;right:0;z-index:9995;margin:0;border-radius:16px 16px 0 0;border:none;border-top:1px solid rgba(0,0,0,.06);box-shadow:0 -4px 24px rgba(0,0,0,.12);animation:readkit-mobile-slideUp .25s ease-out}#readkit-toolbar.readkit-mobile-visible .readkit-bar{flex-wrap:wrap;gap:4px;padding:8px 12px}#readkit-toolbar.readkit-mobile-visible .readkit-actions{flex-wrap:wrap;gap:2px}#readkit-toolbar.readkit-mobile-visible .readkit-btn{padding:8px 10px;font-size:12px}#readkit-toolbar.readkit-mobile-visible .readkit-share{gap:1px}#readkit-toolbar.readkit-mobile-visible .readkit-share-btn{width:30px;height:30px}#readkit-toolbar.readkit-mobile-visible .readkit-panel{padding:12px 14px}#readkit-toolbar.readkit-mobile-visible .readkit-lang-grid{gap:6px}#readkit-toolbar.readkit-mobile-visible .readkit-lang-chip{padding:8px 14px;font-size:13px;min-height:36px}.readkit-mobile-toc-toggle{display:none!important}.readkit-mobile-cta{display:none!important}.readkit-mobile-tts-panel{position:fixed;bottom:0;left:0;right:0;z-index:9995;background:#fff;border-radius:16px 16px 0 0;border-top:1px solid rgba(0,0,0,.06);box-shadow:0 -4px 24px rgba(0,0,0,.12);padding:16px 16px calc(16px + env(safe-area-inset-bottom));animation:readkit-mobile-slideUp .25s ease-out;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1d1d1f}.readkit-mobile-tts-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}.readkit-mobile-tts-title{font-size:14px;font-weight:600;color:#1d1d1f}.readkit-mobile-tts-close{width:30px;height:30px;border-radius:50%;border:none;background:rgba(0,0,0,.06);color:#6b7280;font-size:18px;display:flex;align-items:center;justify-content:center;cursor:pointer;-webkit-tap-highlight-color:transparent}.readkit-mobile-tts-close:active{transform:scale(.9)}.readkit-mobile-tts-controls{display:flex;align-items:center;gap:10px}.readkit-mobile-tts-btn{width:44px;height:44px;min-width:44px;border-radius:10px;border:1px solid rgba(0,0,0,.12);background:#f0f0f2;color:#1d1d1f;display:flex;align-items:center;justify-content:center;cursor:pointer;-webkit-tap-highlight-color:transparent;transition:background .15s,transform .1s;flex-shrink:0}.readkit-mobile-tts-btn svg{width:18px;height:18px}.readkit-mobile-tts-btn:active:not(:disabled){transform:scale(.92)}.readkit-mobile-tts-btn:disabled{opacity:.35;cursor:not-allowed}.readkit-mobile-tts-btn--play{background:#285eff;border-color:#285eff;color:#fff}.readkit-mobile-tts-btn--play:active:not(:disabled){background:#1d4ed8}.readkit-mobile-tts-speed select{height:44px;padding:0 12px;border:1px solid rgba(0,0,0,.12);border-radius:10px;font-size:14px;font-weight:500;background:#f0f0f2;color:#1d1d1f;cursor:pointer;-webkit-tap-highlight-color:transparent}.readkit-mobile-tts-status{font-size:13px;font-weight:500;color:#86868b;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0;flex:1}.readkit-fab{position:fixed;bottom:calc(90px + env(safe-area-inset-bottom));right:16px;z-index:9993;width:46px;height:46px;border-radius:12px;border:none;background:0 0;padding:0;overflow:hidden;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(0,0,0,.2);transition:opacity .4s ease,transform .2s ease,box-shadow .3s ease;opacity:1;-webkit-tap-highlight-color:transparent}.readkit-fab-icon{width:100%;height:100%;object-fit:cover;border-radius:12px;pointer-events:none;transition:transform .25s ease}.readkit-fab svg{width:20px;height:20px;transition:transform .25s ease}.readkit-fab:active{transform:scale(.92)}.readkit-fab--open{box-shadow:0 0 0 2px rgba(255,255,255,.8),0 4px 16px rgba(0,0,0,.25)}.readkit-fab--open .readkit-fab-icon{transform:scale(1.05)}.readkit-fab--scrolling{opacity:.45;box-shadow:0 1px 6px rgba(0,0,0,.15)}.readkit-fab--hidden{opacity:0;pointer-events:none;transform:scale(.7)}.readkit-fab-backdrop{position:fixed;inset:0;z-index:9992;background:rgba(0,0,0,.18);opacity:0;pointer-events:none;transition:opacity .25s ease}.readkit-fab-backdrop--visible{opacity:1;pointer-events:auto}.readkit-fab-menu{position:fixed;bottom:calc(146px + env(safe-area-inset-bottom));right:14px;z-index:9994;display:flex;flex-direction:column-reverse;gap:10px;pointer-events:none;opacity:0}.readkit-fab-menu--open{pointer-events:auto;opacity:1}.readkit-fab-menu-item{display:flex;align-items:center;gap:10px;flex-direction:row-reverse;opacity:0;transform:translateY(12px) scale(.85);transition:opacity .2s ease,transform .2s ease}.readkit-fab-menu--open .readkit-fab-menu-item{opacity:1;transform:translateY(0) scale(1)}.readkit-fab-menu--open .readkit-fab-menu-item:first-child{transition-delay:30ms}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(2){transition-delay:60ms}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(3){transition-delay:90ms}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(4){transition-delay:0.12s}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(5){transition-delay:0.15s}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(6){transition-delay:0.18s}.readkit-fab-menu--open .readkit-fab-menu-item:nth-child(7){transition-delay:0.21s}.readkit-fab-action{width:52px;height:52px;border-radius:50%;border:none;background:#fff;color:#1d1d1f;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 3px 14px rgba(0,0,0,.16);transition:background .15s ease,transform .1s ease;flex-shrink:0;-webkit-tap-highlight-color:transparent}.readkit-fab-action svg{width:26px!important;height:26px!important}.readkit-fab-action:active{transform:scale(.9)}.readkit-fab-label{font-size:12px;font-weight:500;color:#fff;background:rgba(0,0,0,.7);padding:4px 10px;border-radius:6px;white-space:nowrap;pointer-events:none;backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}#readkit-left-sidebar.readkit-sidebar--mobile-open{display:block!important;visibility:visible!important;position:fixed!important;left:0!important;bottom:0!important;top:auto!important;z-index:99999!important;background:#fff!important;padding:16px 16px 20px!important;border-radius:16px 16px 0 0;box-shadow:0 -4px 24px rgba(0,0,0,.12)!important;max-height:50vh!important;width:100%!important;max-width:100%!important;overflow-y:auto!important;animation:readkit-mobile-slideUp .25s ease-out}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-card{border:none!important;box-shadow:none!important;padding:0!important;border-radius:0!important}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-card::before{display:none}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-card-body{max-height:none!important;opacity:1!important;overflow:visible!important}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-card-body.readkit-toc-collapsed{max-height:none!important;opacity:1!important}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-card-divider{display:none}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-item[data-level="3"],#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-item[data-level="4"]{display:none!important}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-toc-link{padding:10px 8px;font-size:14px;min-height:40px;display:flex;align-items:center}#readkit-left-sidebar.readkit-sidebar--mobile-open .readkit-progress-track{display:none}@keyframes readkit-mobile-slideUp{from{transform:translateY(100%)}to{transform:translateY(0)}}.readkit-toc-backdrop{position:fixed;inset:0;z-index:99998;background:rgba(0,0,0,.25);opacity:0;pointer-events:none;transition:opacity .2s ease}.readkit-toc-backdrop--visible{opacity:1;pointer-events:auto}#readkit-mobile-cta-bar{position:fixed!important;bottom:0!important;left:0!important;right:0!important;z-index:9991!important;background:#fff!important;border:0!important;border-top:1px solid rgba(0,0,0,.06)!important;padding:10px 16px calc(8px + env(safe-area-inset-bottom))!important;margin:0!important;display:flex!important;align-items:center!important;gap:12px;box-shadow:0 -1px 8px rgba(0,0,0,.06);animation:readkit-mobile-slideUp .3s ease-out;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif!important;color:#374151!important;float:none!important;clear:none!important;contain:none!important;clip:auto!important;clip-path:none!important;max-width:none!important;width:auto!important}#readkit-mobile-cta-bar *,#readkit-mobile-cta-bar ::after,#readkit-mobile-cta-bar ::before{box-sizing:border-box;text-decoration:none;letter-spacing:normal;text-transform:none;word-spacing:normal;text-indent:0;text-shadow:none;float:none;clear:none;max-width:none;max-height:none;min-width:0;min-height:0;list-style:none;vertical-align:baseline;line-height:normal;font-style:normal}#readkit-mobile-cta-bar a,#readkit-mobile-cta-bar a:active,#readkit-mobile-cta-bar a:focus,#readkit-mobile-cta-bar a:hover,#readkit-mobile-cta-bar a:visited{text-decoration:none!important;outline:0!important;box-shadow:none!important}#readkit-mobile-cta-bar .readkit-mobile-cta-bar-handle{position:absolute;top:50%;left:6px;transform:translateY(-50%);width:4px;height:24px;border-radius:2px;background:rgba(0,0,0,.15);margin:0;padding:0;border:0}#readkit-mobile-cta-bar .readkit-mobile-cta-bar-text{flex:1;min-width:0;font-size:12px!important;font-weight:600!important;color:#374151!important;line-height:1.3!important;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0;padding:0;border:0;background:0 0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif!important}#readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn,#readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn:link,#readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn:visited{flex-shrink:0;display:inline-flex!important;align-items:center;gap:5px;padding:10px 18px!important;background:#285eff!important;color:#fff!important;border:none!important;border-radius:8px;font-size:13px!important;font-weight:600!important;text-decoration:none!important;cursor:pointer;transition:background .15s ease;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif!important;-webkit-tap-highlight-color:transparent;margin:0;outline:0;box-shadow:none}#readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn:hover{background:#1d4ed8!important;color:#fff!important;text-decoration:none!important}#readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn:active{transform:scale(.97)}}@media (max-width:640px){html.readkit-dark .readkit-fab{box-shadow:0 2px 10px rgba(0,0,0,.4)}html.readkit-dark .readkit-fab--open{box-shadow:0 0 0 2px rgba(255,255,255,.5),0 4px 16px rgba(0,0,0,.5)}html.readkit-dark .readkit-fab--scrolling{opacity:.4}html.readkit-dark .readkit-fab-action{background:#1e1e36;border:none;color:#f0f0f5;box-shadow:0 3px 14px rgba(0,0,0,.5)}html.readkit-dark .readkit-fab-label{background:rgba(26,26,48,.9);color:#d4d4dc}html.readkit-dark .readkit-fab-backdrop{background:rgba(0,0,0,.4)}html.readkit-dark #readkit-left-sidebar.readkit-sidebar--mobile-open{background:#1a1a30!important}html.readkit-dark .readkit-toc-backdrop{background:rgba(0,0,0,.5)}html.readkit-dark #readkit-mobile-cta-bar{background:#1a1a30!important;border-top-color:#2a2a44!important;box-shadow:0 -1px 8px rgba(0,0,0,.3);color:#d4d4dc!important}html.readkit-dark #readkit-mobile-cta-bar .readkit-mobile-cta-bar-text{color:#d4d4dc!important}html.readkit-dark #readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn,html.readkit-dark #readkit-mobile-cta-bar a.readkit-mobile-cta-bar-btn:visited{background:#3b82f6!important;color:#fff!important}html.readkit-dark #readkit-mobile-cta-bar .readkit-mobile-cta-bar-handle{background:rgba(255,255,255,.2)}html.readkit-dark #readkit-toolbar.readkit-mobile-visible{--readkit-glass:#1a1a30;--readkit-border:rgba(255, 255, 255, 0.08);border-top-color:#2a2a44;box-shadow:0 -4px 24px rgba(0,0,0,.4)}html.readkit-dark .readkit-mobile-tts-panel{background:#1a1a30;border-top-color:#2a2a44;box-shadow:0 -4px 24px rgba(0,0,0,.4)}html.readkit-dark .readkit-mobile-tts-title{color:#f0f0f5}html.readkit-dark .readkit-mobile-tts-close{background:rgba(255,255,255,.08);color:#9a9ab0}html.readkit-dark .readkit-mobile-tts-btn{background:#1e1e34;border-color:rgba(255,255,255,.1);color:#d4d4dc}html.readkit-dark .readkit-mobile-tts-btn--play{background:#3b82f6;border-color:#3b82f6;color:#fff}html.readkit-dark .readkit-mobile-tts-speed select{background:#1e1e34;border-color:rgba(255,255,255,.1);color:#d4d4dc}html.readkit-dark .readkit-mobile-tts-status{color:#8888a0}}