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h2{font-size:1.6rem}.article-meta{flex-direction:column;gap:12px}.font-controls{width:100%;justify-content:space-between}.navigation-footer>div{flex-direction:column;gap:10px}.nav-btn{max-width:100%;width:100%}.nav-btn.next{text-align:left;flex-direction:row-reverse}.nav-btn.next>div{text-align:right}.mobile-toggle{padding:10px;margin:-10px}.sidebar-overlay.active{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.5);z-index:1000;animation:fadeIn .2s ease-out}}.progress-bar{position:fixed;top:0;left:0;height:4px;background:var(--accent-color);z-index:1000;transition:width .1s ease-out}.chapter-number{font-size:.85rem;font-weight:700;color:var(--accent-color);opacity:.6;min-width:25px}.fav-btn{background:white;border:1px solid var(--border-color);width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all 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button{flex:1;border:none;background:transparent;padding:.6rem;font-size:.85rem;font-family:inherit;cursor:pointer;border-radius:7px;transition:all .2s;color:var(--text-secondary)}.sidebar-tabs button:hover{color:var(--accent-color)}.sidebar-tabs button.active{background:white;color:var(--accent-color);font-weight:600;box-shadow:0 2px 6px #00000014}