body,html{margin:0;padding:0;font-family:var(--font-family-primary)}body,html,html[data-theme=dark] body,main{background:var(--color-bg-primary);color:var(--color-text-primary)}main{min-height:100vh}.with-left-nav{margin-left:var(--nav-left-width)}.with-bottom-tabs{padding-bottom:calc(var(--nav-bottom-height) + env(safe-area-inset-bottom))}@media (max-width:768px){.with-left-nav{margin-left:0}}:root{--color-black:#000;--color-white:#fff;--color-grey-50:#fafafa;--color-grey-100:#f5f5f5;--color-grey-200:#e5e5e5;--color-grey-300:#d4d4d4;--color-grey-400:#a3a3a3;--color-grey-500:#737373;--color-grey-600:#525252;--color-grey-700:#404040;--color-grey-800:#262626;--color-grey-900:#171717;--color-primary:var(--color-black);--color-secondary:var(--color-grey-600);--color-tertiary:var(--color-grey-400);--color-bg-primary:var(--color-white);--color-bg-secondary:var(--color-grey-50);--color-bg-tertiary:var(--color-grey-100);--color-bg-overlay:rgba(0,0,0,.5);--color-border-primary:var(--color-grey-200);--color-border-secondary:var(--color-grey-300);--color-border-focus:var(--color-black);--color-text-primary:var(--color-black);--color-text-secondary:var(--color-grey-600);--color-text-tertiary:var(--color-grey-500);--color-text-muted:var(--color-grey-400);--color-text-inverse:var(--color-white);--color-hover:var(--color-grey-100);--color-active:var(--color-black);--color-disabled:var(--color-grey-300);--color-error:#dc2626;--color-highlight:#ff9}[data-theme=dark]{--color-primary:var(--color-white);--color-bg-primary:var(--color-grey-900);--color-bg-secondary:var(--color-grey-800);--color-bg-tertiary:var(--color-grey-700);--color-bg-overlay:rgba(0,0,0,.7);--color-border-primary:var(--color-grey-700);--color-border-secondary:var(--color-grey-600);--color-border-focus:var(--color-white);--color-text-primary:var(--color-white);--color-text-secondary:var(--color-grey-300);--color-text-tertiary:var(--color-grey-400);--color-text-muted:var(--color-grey-500);--color-text-inverse:var(--color-black);--color-hover:var(--color-grey-800);--color-active:var(--color-white);--color-disabled:var(--color-grey-600)}:root{--font-family-primary:-apple-system,BlinkMacSystemFont,"Segoe 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rgba(0,0,0,.05);--shadow-base:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px 0 rgba(0,0,0,.06);--shadow-md:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.06);--shadow-lg:0 10px 15px -3px rgba(0,0,0,.1),0 4px 6px -2px rgba(0,0,0,.05);--shadow-xl:0 20px 25px -5px rgba(0,0,0,.1),0 10px 10px -5px rgba(0,0,0,.04);--shadow-2xl:0 25px 50px -12px rgba(0,0,0,.25);--transition-fast:150ms ease;--transition-base:200ms ease;--transition-slow:300ms ease;--transition-slower:500ms 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var(--space-4);margin:var(--space-4);width:calc(100% - var(--space-8))}.audio-control-buttons{gap:var(--space-4)}.audio-control-button{width:var(--space-10);height:var(--space-10)}.audio-play-button{width:var(--space-12);height:var(--space-12)}}.title{font-size:var(--font-size-3xl)}.chapter-number{font-size:var(--font-size-lg)}.audio-player-simple{background:var(--color-bg-primary);border:1px solid var(--color-border-primary);border-radius:var(--radius-2xl);padding:var(--space-4) var(--space-6);margin-top:60px;margin-bottom:var(--space-5);display:flex;align-items:center;gap:var(--space-6);font-family:var(--font-family-primary);transition:all var(--transition-base)}.audio-player-simple:hover{box-shadow:var(--shadow-sm)}.audio-player-simple.error{background:var(--color-bg-secondary);border-color:var(--color-error)}.audio-player-minimized{position:fixed;bottom:var(--space-6);right:var(--space-6);background:var(--color-bg-primary);border:1px solid var(--color-border-primary);border-radius:var(--radius-xl);display:flex;flex-direction:column;font-family:var(--font-family-primary);box-shadow:var(--shadow-lg);z-index:var(--z-index-sticky);max-width:320px;min-width:280px;transition:all var(--transition-base);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid hsla(0,0%,100%,.2)}.audio-player-minimized:hover{box-shadow:var(--shadow-xl);transform:translateY(-2px)}.audio-player-minimized.expanded{border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md)}.minimized-main{gap:var(--space-3);padding:var(--space-3) var(--space-4)}.minimized-main,.play-btn-mini{display:flex;align-items:center}.play-btn-mini{width:32px;height:32px;border:none;border-radius:var(--radius-full);background:var(--color-primary);color:var(--color-text-inverse);cursor:pointer;justify-content:center;transition:all 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ease}.progress-input-mini{position:absolute;top:-6px;left:0;width:100%;height:16px;opacity:0;cursor:pointer;margin:0;padding:0;-webkit-appearance:none;-moz-appearance:none;appearance:none}.progress-input-mini::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:12px;height:12px;border-radius:var(--radius-full);background:var(--color-primary);cursor:pointer;border:2px solid var(--color-bg-primary);box-shadow:var(--shadow-base);opacity:1;position:relative;z-index:1}.progress-input-mini::-moz-range-thumb{width:12px;height:12px;border-radius:var(--radius-full);background:var(--color-primary);cursor:pointer;border:2px solid var(--color-bg-primary);box-shadow:var(--shadow-base);-moz-appearance:none;appearance:none}.chapter-info-mini{display:flex;flex-direction:column;gap:var(--space-1);min-width:0;flex-shrink:1}.book-name-mini{font-size:var(--font-size-sm);font-weight:var(--font-weight-semibold);color:var(--color-text-primary);overflow:hidden;text-overflow:ellipsis}.book-name-mini,.chapter-number-mini{line-height:var(--line-height-tight);white-space:nowrap}.chapter-number-mini{font-size:var(--font-size-xs);color:var(--color-text-secondary)}.chapter-selector-mini{width:24px;height:24px;border:1px solid var(--color-border-secondary);border-radius:var(--radius-md);background:var(--color-bg-primary);color:var(--color-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base);flex-shrink:0}.chapter-selector-mini:hover{background:var(--color-hover);border-color:var(--color-border-focus);color:var(--color-text-primary)}.chapter-selector-mini svg.rotated{transform:rotate(180deg)}.minimized-dropdown{border-top:1px solid var(--color-border-primary);background:var(--color-bg-primary);border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);max-height:200px;overflow-y:auto}.minimized-dropdown-content{display:grid;grid-template-columns:repeat(auto-fill,minmax(32px,1fr));grid-gap:var(--space-1);gap:var(--space-1);padding:var(--space-3)}.minimized-dropdown-item{background:none;border:1px solid var(--color-border-secondary);border-radius:var(--radius-md);padding:var(--space-2);cursor:pointer;font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;min-height:32px;color:var(--color-text-primary);font-family:var(--font-family-primary)}.minimized-dropdown-item:hover{background:var(--color-hover);border-color:var(--color-border-focus)}.minimized-dropdown-item.active{border-color:var(--color-primary)}.minimized-dropdown-item.active,.play-btn{background:var(--color-primary);color:var(--color-text-inverse)}.play-btn{width:48px;height:48px;border:none;border-radius:var(--radius-full);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition-base);flex-shrink:0}.play-btn:hover:not(:disabled){background:var(--color-active);transform:scale(1.05)}.play-btn:disabled{background:var(--color-disabled);cursor:not-allowed}.loading-spinner{width:20px;height:20px;border:2px solid hsla(0,0%,100%,.3);border-top:2px solid var(--color-text-inverse);border-radius:var(--radius-full);animation:spin 1s linear 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var(--color-bg-primary);box-shadow:var(--shadow-base);-moz-appearance:none;appearance:none}.chapter-selector-section{position:relative}.chapter-btn{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-4);background:var(--color-bg-primary);border:1px solid var(--color-border-secondary);border-radius:var(--radius-xl);cursor:pointer;transition:all var(--transition-base);font-size:var(--font-size-base);font-weight:var(--font-weight-medium);color:var(--color-text-primary);font-family:var(--font-family-primary);min-width:120px;justify-content:space-between}.chapter-btn svg{color:var(--color-text-secondary)}.chapter-btn:hover{background:var(--color-hover);border-color:var(--color-border-focus)}.audio-chapter-dropdown{top:100%;right:0;margin-top:var(--space-1);z-index:var(--z-index-dropdown)}.audio-chapter-dropdown-content{background:var(--color-bg-primary);border:1px solid var(--color-border-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);max-height:300px;overflow-y:auto;min-width:200px;display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));grid-gap:var(--space-1);gap:var(--space-1);padding:var(--space-2)}.audio-chapter-dropdown-item{border:1px solid var(--color-border-secondary);border-radius:var(--radius-md);padding:var(--space-2);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium);transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;min-height:36px;color:var(--color-text-primary);font-family:var(--font-family-primary)}.audio-chapter-dropdown-item:hover{background:var(--color-hover);border-color:var(--color-border-focus)}.audio-chapter-dropdown-item.active{background:var(--color-primary);color:var(--color-text-inverse);border-color:var(--color-primary)}.error-message{padding:var(--space-4);font-size:var(--font-size-sm);font-weight:var(--font-weight-medium)}@media (max-width:768px){.audio-player-simple{padding:var(--space-3) var(--space-4);gap:var(--space-4);margin-top:40px}.play-btn{width:40px;height:40px}.play-btn svg{width:20px;height:20px}.chapter-btn{font-size:var(--font-size-sm);padding:var(--space-2) var(--space-3);min-width:100px}.progress-input::-webkit-slider-thumb{width:16px;height:16px}.progress-input::-moz-range-thumb{width:16px;height:16px}.audio-player-minimized{bottom:var(--space-4);right:var(--space-4);max-width:280px;min-width:240px}.minimized-main{padding:var(--space-2) var(--space-3)}.play-btn-mini{width:28px;height:28px}.play-btn-mini svg{width:14px;height:14px}.chapter-selector-mini{width:20px;height:20px}.chapter-selector-mini svg{width:12px;height:12px}.book-name-mini{font-size:var(--font-size-xs)}.chapter-number-mini{font-size:10px}.minimized-dropdown-content{grid-template-columns:repeat(auto-fill,minmax(28px,1fr));padding:var(--space-2)}.minimized-dropdown-item{min-height:28px;font-size:var(--font-size-xs)}}@media 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h3{margin:0;font-size:18px;font-weight:600;color:#000}.menu-header button{background:none;border:none;cursor:pointer;padding:8px;border-radius:4px;display:flex;align-items:center;justify-content:center}.menu-header button:hover{background-color:#e9ecef}.books-list{flex:1 1;overflow-y:auto;padding:8px}.book-item{width:100%;text-align:left;padding:12px 16px;border:none;background:none;cursor:pointer;border-radius:8px;margin-bottom:2px;font-size:16px;transition:background-color .2s ease}.book-item:hover{background-color:#f5f5f5}.book-item.active{background-color:#000;color:#fff;font-weight:600}.chapter-sidebar{background:#fff;width:280px;height:100vh;display:flex;flex-direction:column;box-shadow:-2px 0 10px rgba(0,0,0,.1);margin-left:auto;transform:translateX(100%);transition:transform .25s ease-out}.chapter-sidebar.open{transform:translateX(0)}.sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid 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