#reading-view{height:100%}#text-lesson-container{padding:3rem;overflow-y:auto;height:100%;box-sizing:border-box}.top-controls{display:flex;justify-content:center;align-items:center;gap:1.5rem;padding:1.5rem;margin-bottom:0}#custom-hsk-selector{position:relative;min-width:375px}.top-control-btn{padding:.5rem 1rem;border-radius:8px;border:2px solid var(--border-color);background-color:var(--ht-menu-panel-bg);color:var(--text-color);text-decoration:none;font-weight:700;font-size:1rem;cursor:pointer;transition:all .2s}.top-control-btn:hover{border-color:var(--ht-menu-primary-color);color:var(--ht-menu-primary-color)}#read-full-text-btn .stop-icon{display:none}#read-full-text-btn .play-icon,#read-full-text-btn .stop-icon{width:24px;height:24px}#read-full-text-btn.is-speaking{background-color:var(--correct-green);border-color:var(--correct-green)}#read-full-text-btn.is-speaking .play-icon{display:none}#read-full-text-btn.is-speaking .stop-icon{display:block;stroke:white}.audio-instruction{color:#888;font-size:1rem;font-weight:600;width:100%;text-align:center;margin-top:1rem}#text-container{max-width:800px;margin:0 auto;font-size:34px;font-weight:600;line-height:2.5;text-align:left;color:var(--text-color)}#text-container span.interactive-word,.typing-word-wrap{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;vertical-align:top;line-height:1.2;margin-right:.5rem;cursor:pointer;border-bottom:2px dotted transparent;vertical-align:text-bottom;border-radius:3px;padding:0 2px;transition:background-color 0ms}#text-container span.interactive-word:hover{background-color:var(--ht-menu-hover-bg);border-color:var(--correct-green)}.interactive-word .chinese-char{font-size:34px;line-height:1.2}#text-container span.interactive-word .pinyin-text,.typing-word-wrap .pinyin-text{display:none;font-family:Nunito,sans-serif;font-size:15px;font-weight:600;color:#888;text-align:center;line-height:1;opacity:0;transition:opacity .2s,margin-top .2s,height .2s;height:0;overflow:hidden}[data-theme=dark] #text-container span.interactive-word .pinyin-text,[data-theme=dark] .typing-word-wrap .pinyin-text{color:#aaa}body.show-pinyin #text-container span.interactive-word .pinyin-text,body.show-pinyin .typing-word-wrap .pinyin-text{display:block;opacity:1;height:auto;margin-top:3px}body.show-pinyin #text-container,body.show-pinyin #typing-paragraph-display{line-height:2.8}#pdf-viewer-container{width:100%;height:100%;position:relative;background-color:var(--bg-color)}#pdf-render-area{width:100%;height:100%;overflow:auto;text-align:center}#pdf-render-area canvas{width:100%;height:auto;display:block;margin:0;box-shadow:0 4px 12px rgba(0,0,0,.1)}#pdf-viewer-container.pdf-dark-mode #pdf-render-area canvas{filter:invert(1) hue-rotate(180deg)}#pdf-render-area canvas.interactive-cursor{cursor:pointer}#pdf-controls{position:absolute;bottom:20px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:1rem;padding:.75rem 1.25rem;background-color:rgba(30,30,30,.75);backdrop-filter:blur(5px);border-radius:12px;border:1px solid rgba(255,255,255,.2);color:#fff;z-index:10}#pdf-controls button{background-color:var(--selected-blue);color:var(--ht-menu-light-text);border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-weight:700}#pdf-close-btn{background-color:#6c757d;margin-right:auto}#pdf-controls button:disabled{background-color:#555;cursor:not-allowed}.pdf-dark-toggle-wrapper{display:flex;align-items:center;gap:.5rem;border-left:1px solid #777;padding-left:1rem}#tooltip{position:absolute;display:none;padding:15px;background-color:var(--tooltip-bg);color:var(--tooltip-text);border-radius:6px;z-index:1000;max-width:300px;pointer-events:none;box-shadow:0 2px 10px rgba(0,0,0,.2);transition:background-color .3s,color .3s}#tooltip .word{font-size:20px;font-weight:700;color:var(--correct-green)}#tooltip .pinyin{font-size:16px;color:#888;margin:5px 0}#tooltip .definition{font-size:14px}.loading-spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(136,136,136,.3);border-radius:50%;border-top-color:#888;animation:spin 1s ease-in-out infinite}@keyframes spin{0%{transform:rotate(0)}100%{transform:rotate(360deg)}}#reading-options-btn{display:none}.audio-control-group{display:none;align-items:center;gap:10px;background:#f1f3f5;padding:5px 15px;border-radius:12px;border:1px solid var(--border-color)}.audio-control-group.visible{display:flex}.control-btn{background:#fff;border:2px solid var(--border-color);border-radius:50%;width:40px;height:40px;display:flex;justify-content:center;align-items:center;cursor:pointer;transition:all .2s;color:var(--text-color);flex-shrink:0}.control-btn:hover{border-color:var(--selected-blue);color:var(--selected-blue)}.control-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.control-btn.speed-btn{width:auto;min-width:40px;padding:0 8px;border-radius:12px;font-size:.9rem;font-weight:700}#play-pause-btn.is-playing .play-icon{display:none}#play-pause-btn.is-playing .pause-icon{display:block}#play-pause-btn .pause-icon{display:none}#audio-seeker{width:150px;cursor:pointer;accent-color:var(--selected-blue)}#time-display{font-size:.85rem;font-weight:700;color:#888;width:45px;text-align:right;font-variant-numeric:tabular-nums}.interactive-word.active-audio-highlight{background-color:#ffeb3b;box-shadow:0 0 0 2px #ffeb3b;border-radius:4px;color:#333!important}.interactive-word.active-audio-highlight:hover{color:var(--text-color)!important}#read-full-text-btn.hidden-mode{display:none!important}.token-group{display:inline-block;white-space:nowrap}#translation-container{display:none;font-family:Nunito,sans-serif;font-size:1.4rem;line-height:2.2;color:#555;padding:0}[data-theme=dark] #translation-container{color:var(--ht-menu-light-text)}.english-version-content{text-align:left}body.show-translation #translation-container{display:block}@media (min-width:769px){body.show-translation #dual-language-wrapper{display:flex;gap:3rem;align-items:flex-start}body.show-translation #text-container,body.show-translation #translation-container{flex:1}}@media (max-width:1024px){#pinyin-toggle-wrapper{position:fixed;bottom:0;left:0;width:100%;height:75px;background:var(--ht-menu-panel-bg);border-top:1px solid var(--border-color);padding:0 1.5rem;display:flex;justify-content:space-between;align-items:center;z-index:1000;box-sizing:border-box}body.mobile-menu-open #pinyin-toggle-wrapper{display:none}#text-lesson-container{padding-bottom:100px!important}.pinyin-controls-group span{font-weight:700;font-size:.9rem}#custom-hsk-selector{flex-grow:1;min-width:unset}#custom-hsk-menu{width:auto;left:20px;right:20px}#text-lesson-container{padding:1.5rem}#text-container,.interactive-word .chinese-char{font-size:26px}.top-controls{margin-top:0;margin-bottom:0}.interactive-word .pinyin-text{font-size:13px}.audio-instruction{flex-grow:1;text-align:center;padding:0 50px;box-sizing:border-box}#reading-options-btn svg{width:24px;height:24px}#reading-options-menu #pdf-upload-button{justify-content:center}}@media (max-width:768px){.audio-control-group{width:100%;justify-content:space-between;box-sizing:border-box;margin-top:10px}#audio-seeker{flex-grow:1;margin:0 10px;width:auto}.top-controls{flex-wrap:wrap;gap:1rem}body.show-translation #dual-language-wrapper{display:flex;flex-direction:column;height:calc(100vh - 120px)}body.show-translation #text-container,body.show-translation #translation-container{flex:1;overflow-y:auto;border-bottom:1px solid var(--border-color);padding:1rem}}