:root{--sidebar-width: 280px;--header-height: 60px;--bg-color: #fdfbf7;--text-color: #2c2c2c;--sidebar-bg: #f4f1ea;--sidebar-border: #e0e0e0;--accent-color: #d35400;--code-bg: #eae8e1}@media(prefers-color-scheme:dark){:root{--bg-color: #1a1a1a;--text-color: #e0e0e0;--sidebar-bg: #141414;--sidebar-border: #333333;--accent-color: #e67e22;--code-bg: #2a2a2a}}body{margin:0;font-family:Georgia,serif;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s ease,color .3s ease;letter-spacing:.7px}ol{line-height:120%}ul{line-height:130%}.app-container{display:flex;min-height:100vh}a{color:var(--accent-color);text-decoration:none}a:hover{text-decoration:underline}.mobile-header{display:none;position:fixed;top:0;left:0;right:0;height:var(--header-height);background:var(--bg-color);border-bottom:1px solid var(--sidebar-border);align-items:center;padding:0 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auto}.chapter-content h1{font-size:2.5rem;margin-bottom:.5rem;line-height:1.1}.chapter-content h2{font-size:1.5rem;margin-top:2.5rem;margin-bottom:1rem}.chapter-content h3{font-size:1.2rem;margin-top:2rem;font-style:italic}.chapter-content p{margin-bottom:1.5rem;line-height:1.7;font-size:1.125rem}.chapter-content blockquote{border-left:3px solid var(--accent-color);padding-left:1.2rem;margin:2rem 0;font-style:italic;opacity:.85;background:var(--sidebar-bg);padding:1rem}.chapter-content img{max-width:100%;height:auto;border-radius:2px;margin:2rem 0;display:block}.chapter-content .ai-interlude{background:var(--sidebar-bg);border-left:4px solid var(--accent-color);padding:1rem 1.2rem;margin:2rem 0;font-style:italic;opacity:.85;border-radius:4px}.chapter-content .ai-interlude h4{margin-top:0;font-weight:400;font-style:normal;font-size:.95rem;opacity:.9}@media(max-width:768px){.app-container{flex-direction:column;padding-top:var(--header-height)}.mobile-header{display:flex}.sidebar{position:fixed;left:0;top:var(--header-height);bottom:0;width:85%;max-width:300px;transform:translate(-100%);box-shadow:2px 0 10px #0003}.sidebar.open{transform:translate(0)}.backdrop{position:fixed;inset:0;background:#00000080;z-index:150;backdrop-filter:blur(2px)}.reader-view{padding:2rem 1.5rem}.chapter-content h1{font-size:2rem}}.sidebar-header-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.sidebar-controls{display:flex;gap:.8rem;align-items:center}.icon-btn{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-color);opacity:.5;padding:.4rem .6rem;width:auto;border-radius:4px;line-height:1}.icon-btn:hover{opacity:1;background-color:#0000000d;color:var(--accent-color)}.floating-controls{position:fixed;top:1.5rem;left:1.5rem;display:flex;gap:1rem;z-index:50}.floating-btn{width:auto;background:transparent;border:1px solid var(--sidebar-border);padding:.6rem 1rem;border-radius:6px;cursor:pointer;opacity:.6;transition:all .2s;color:var(--text-color);background:var(--bg-color);font-size:1.5rem}.floating-btn:hover{opacity:1;border-color:var(--accent-color);color:var(--accent-color);box-shadow:0 2px 8px #0000001a}@media(min-width:769px){.sidebar.desktop-collapsed{display:none}}@media(max-width:768px){.icon-btn,.floating-controls{display:none!important}}.app-container{transition:opacity .3s ease-in-out;opacity:1}.app-container.cinema-fade{opacity:0}html{background-color:var(--bg-color);transition:background-color .3s ease}:fullscreen::backdrop{background-color:var(--bg-color)}.modal-backdrop{position:fixed;inset:0;background:#0009;z-index:1000;display:flex;align-items:center;justify-content:center;backdrop-filter:blur(2px);padding:2rem}.modal-content{background:var(--bg-color);padding:2rem;border-radius:8px;max-width:400px;box-shadow:0 10px 25px #0003;border:1px solid var(--sidebar-border);font-family:system-ui,sans-serif}.modal-content h3{margin-top:0}.modal-content ol{padding-left:1.5rem;line-height:1.6;margin-bottom:2rem}.modal-content li{margin-bottom:.5rem}.modal-close{width:100%;background:var(--accent-color);color:#fff;border:none;padding:.8rem;border-radius:4px;font-weight:700;cursor:pointer}.modal-close:hover{opacity:.9}