.library-toggle{display:none}.chapter-navigation{max-width:920px;margin:0 auto;padding:16px 42px;display:flex;gap:16px;align-items:center;justify-content:space-between;font:12px/1.6 Arial,sans-serif;color:var(--muted)}.chapter-navigation button{background:var(--surface);border:1px solid var(--line);color:var(--ink);padding:9px 12px;border-radius:4px;white-space:nowrap}.chapter-navigation button:disabled{opacity:.45;cursor:default}.reader-tools-dialog{width:min(680px,calc(100vw - 32px))}.reader-tools-dialog h3{font-size:16px;margin:24px 0 10px}.reader-tools-actions{display:flex;flex-wrap:wrap;gap:10px}.chapter-list{max-height:260px;overflow:auto;display:grid;gap:6px}.chapter-list button{padding:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);text-align:left;overflow-wrap:anywhere}.chapter-list button[aria-current=true]{border-color:var(--accent);font-weight:700}.reader-tools-dialog input[type=file]{max-width:100%}.reader-tools-dialog input{margin:8px 0}.reader-tools-dialog output{display:block;overflow-wrap:anywhere;color:var(--muted)}.reader-tools-dialog :disabled{opacity:.55}.legacy-position .chapter-navigation,.legacy-position #readerToolsToggle,.legacy-position #readerSyncToggle{display:none}.legacy-position .library-body{display:block!important}.legacy-position .library-toggle{display:none!important}
@media(max-width:900px){.library{padding:12px 20px}.library-toggle{display:block;width:100%;text-align:left}.library-body{display:none;margin-top:20px}.library-open .library-body{display:block}.chapter-navigation{padding:14px 24px;gap:8px}.chapter-navigation span{max-width:42%;text-align:center}.legacy-position .library{padding:24px 20px}}
@media(max-width:560px){.chapter-navigation{padding:12px 18px;font-size:11px}.chapter-navigation button{padding:8px}.reader-tools-dialog{padding:18px}.reader-tools-actions>*{max-width:100%}}

.natural-reading .topbar,.natural-reading .library,.natural-reading .reader-toolbar,.natural-reading .progress-row,.natural-reading .translation-notice,.natural-reading .book-sources,.natural-reading .reader-footer{display:none}.natural-reading .app-shell{display:block}.natural-reading .reader{max-width:1000px;margin:auto}.natural-reader-bar{display:flex;flex-wrap:wrap;gap:12px;padding:18px;background:var(--surface);border-bottom:1px solid var(--line);font:13px/1.6 Arial,sans-serif}.natural-reader-bar a{color:var(--accent)}

.reader-toolbar{gap:10px;padding-top:12px;padding-bottom:12px}.reader-toolbar>.speech-toggle,.reader-toolbar .speech-panel{width:auto;flex:0 0 auto}.reader-toolbar>.speech-toggle{padding:9px 12px}.display-panel{position:relative;flex:0 0 auto}.display-menu{position:absolute;left:0;top:calc(100% + 12px);z-index:31;display:grid;gap:16px;padding:18px;border:1px solid var(--line);border-radius:12px;background:var(--surface);box-shadow:0 20px 52px #1f2c231f;width:310px}.display-menu[hidden]{display:none}.display-menu .toolbar-group{flex-wrap:wrap;justify-content:space-between}.display-menu .font-controls{margin:0}.display-menu .speech-toggle{width:auto}.natural-reading .display-panel{display:none}.library-toggle{width:100%}
@media(max-width:560px){.reader-toolbar{gap:6px}.reader-toolbar .speech-toggle{width:auto;padding:9px 10px}.display-menu{position:fixed;left:16px;right:16px;top:72px;width:auto;max-height:calc(100dvh - 90px);overflow:auto}.reader-toolbar .speech-panel{width:auto}.library-toggle{width:100%}body.focus-mode .display-menu{top:10px}}
.reader-toolbar .speech-panel{position:static}.speech-menu{left:12px;right:12px;width:auto}.speech-menu::before{display:none}@media(max-width:560px){.speech-menu{left:16px;right:16px}}
.legacy-position .display-panel,.legacy-position .display-menu{display:contents!important}.legacy-position #displayToggle{display:none}.legacy-position .reader-toolbar{padding:19px 42px;gap:20px}.legacy-position .font-controls{margin-left:auto}.legacy-position #vocabularyToggle{min-width:112px}@media(max-width:900px){.legacy-position .reader-toolbar{padding:19px 24px;gap:12px}.legacy-position .font-controls{margin-left:0}}@media(max-width:560px){.legacy-position .reader-toolbar{padding:14px 18px}.legacy-position .speech-panel,.legacy-position #speechToggle,.legacy-position #vocabularyToggle{width:100%}}
.legacy-position .display-menu .toolbar-group{flex-wrap:nowrap;justify-content:normal}.legacy-position .reader-toolbar .speech-toggle{padding:8px 15px}.legacy-position #vocabularyToggle{min-width:0}
.legacy-position .library-body{margin-top:0}
.reader-search-form label{display:block}.reader-search-controls{display:flex;gap:8px;align-items:center}.reader-search-controls input{flex:1;width:0!important}.reader-search-controls button{flex:none}.reader-search-results{display:grid;gap:6px;max-height:280px;overflow:auto}.reader-search-result{display:grid;gap:5px;text-align:left;padding:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);font:14px/1.6 Arial,sans-serif;overflow-wrap:anywhere}.reader-search-result strong{color:var(--accent);font-size:12px}.reader-search-result:hover{background:var(--accent-soft)}#readerSearchStatus{color:var(--muted);font-size:12px;overflow-wrap:anywhere}.reader-search-results:empty{display:none}