:root{--bg:#111;--bg-secondary:#1a1a24;--bg-card:#1e1e2e;--bg-hover:#2a2a3e;--text:#999;--text-dim:#999;--text-bright:#dbdbdb;--accent:#c2c2c2;--accent-dim:#cba6f726;--border:#313244;--border-light:#45475a;--shadow:0 4px 24px #0006;--radius:12px;--content-width:1000px;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font:16px/1.25 Microsoft YaHei,Arial,serif}*{box-sizing:border-box}body{min-height:100vh;margin:0}#root{flex-direction:column;min-height:100vh;display:flex}a{color:var(--accent);text-decoration:none;transition:opacity .2s}a:hover{opacity:.8}::selection{background:var(--accent);color:var(--bg)}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg)}::-webkit-scrollbar-thumb{background:var(--border-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--accent)}.app-container{width:100%;max-width:960px;margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#111;padding:25px 0}.header-inner{justify-content:space-between;align-items:center;max-width:960px;margin:0 auto;padding:0 20px;display:flex}.site-logo{color:var(--text-bright);align-items:center;gap:10px;font-size:20px;font-weight:700;text-decoration:none;display:flex}.site-logo:hover{opacity:1}.site-logo span{background:linear-gradient(135deg, var(--accent), #f38ba8);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.book-hero{text-align:center;padding:60px 0 40px}.book-hero h1{color:var(--text-bright);letter-spacing:2px;margin:0 0 8px;font-size:42px;font-weight:700}.book-meta{color:var(--text-dim);margin-bottom:20px;font-size:14px}.book-meta span+span:before{content:"·";margin:0 8px}.book-desc{max-width:560px;color:var(--text-dim);text-indent:2em;text-align:justify;margin:0 auto;font-size:18px;line-height:1.8}.book-stats{justify-content:center;gap:40px;margin:30px 0;display:flex}.stat-item{text-align:center}.stat-value{color:var(--accent);font-size:28px;font-weight:700}.stat-label{color:var(--text-dim);margin-top:4px;font-size:13px}.chapter-section{padding:20px 0 60px}.section-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.section-title{color:var(--text-bright);font-size:20px;font-weight:600}.chapter-search{background:var(--bg-card);border:1px solid var(--border);color:var(--text);border-radius:8px;outline:none;width:200px;padding:8px 14px;font-size:14px;transition:border-color .2s}.chapter-search:focus{border-color:var(--accent)}.chapter-search::placeholder{color:var(--text-dim)}.chapter-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:4px;display:grid}.chapter-item{color:var(--text);text-overflow:ellipsis;white-space:nowrap;border-radius:8px;padding:10px 14px;font-size:14px;text-decoration:none;transition:all .15s;display:block;overflow:hidden}.chapter-item:hover{background:var(--bg-hover);color:var(--accent);opacity:1}.chapter-index{color:var(--text-dim);margin-right:6px;font-family:monospace;font-size:12px}.pagination{justify-content:center;align-items:center;gap:8px;margin-top:24px;display:flex}.page-btn{background:var(--bg-card);border:1px solid var(--border);color:var(--text);cursor:pointer;border-radius:8px;padding:6px 14px;font-size:14px;transition:all .15s}.page-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.page-btn:disabled{opacity:.4;cursor:not-allowed}.page-btn.active{background:var(--accent);color:var(--bg);border-color:var(--accent)}.page-info{color:var(--text-dim);padding:0 8px;font-size:14px}.chapter-page{max-width:var(--content-width);border-left:1px solid var(--border);border-right:1px solid var(--border);flex:1;margin:0 auto;padding:40px 40px 0}.chapter-title{color:var(--text-bright);text-align:center;margin:0 0 36px;font-size:28px;font-weight:700;line-height:1.4}.chapter-content{color:var(--text);font-size:18px;line-height:1.7}.chapter-content p{text-indent:2em;text-align:justify;margin:.9em 0}.chapter-nav{border-top:1px solid var(--border);border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:16px;margin-top:40px;padding-top:30px;padding-bottom:30px;display:flex}.nav-btn{background:var(--bg-card);border:1px solid var(--border);color:var(--text);border-radius:10px;align-items:center;gap:8px;max-width:45%;padding:12px 24px;font-size:15px;text-decoration:none;transition:all .2s;display:flex}.nav-btn:hover{border-color:var(--accent);color:var(--accent);opacity:1;box-shadow:var(--shadow)}.nav-btn.disabled{opacity:.3;pointer-events:none}.nav-btn-label{color:var(--text-dim);font-size:12px}.nav-btn-text{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.nav-center{align-items:center;gap:8px;display:flex}.btn-catalog{background:var(--accent-dim);color:var(--accent);border:1px solid #0000;border-radius:8px;padding:10px 20px;font-size:14px;text-decoration:none;transition:all .2s}.btn-catalog:hover{border-color:var(--accent);opacity:1}.font-controls{background:var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow);z-index:50;border-radius:10px;flex-direction:column;gap:6px;padding:6px;display:flex;position:fixed;bottom:36px;right:36px}.font-btn{width:36px;height:36px;color:var(--text-dim);cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;font-size:16px;transition:all .15s;display:flex}.font-btn:hover{background:var(--bg-hover);color:var(--accent);border-color:var(--border)}.loading{color:var(--text-dim);flex-direction:column;justify-content:center;align-items:center;padding:80px 20px;display:flex}.loading-spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:36px;height:36px;margin-bottom:16px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;color:var(--text-dim);padding:80px 20px}.empty-state h2{color:var(--text-bright);margin-bottom:12px}.empty-state p{max-width:400px;margin:0 auto 8px;font-size:15px;line-height:1.7}.empty-state code{background:var(--bg-card);color:var(--accent);border-radius:4px;padding:3px 8px;font-size:14px}.site-footer{text-align:center;border-top:1px solid var(--border);color:var(--text-dim);margin-top:auto;padding:24px 20px;font-size:13px}.back-to-top{background:var(--bg-card);border:1px solid var(--border);width:40px;height:40px;color:var(--text-dim);cursor:pointer;z-index:50;border-radius:10px;justify-content:center;align-items:center;font-size:18px;transition:all .2s;display:flex;position:fixed;bottom:36px;left:36px}.back-to-top:hover{border-color:var(--accent);color:var(--accent)}@media (width<=640px){.book-hero h1{font-size:30px}.book-stats{gap:24px}.stat-value{font-size:22px}.chapter-grid{grid-template-columns:1fr}.chapter-nav{flex-direction:column}.nav-btn{justify-content:center;width:100%;max-width:100%}.chapter-title{font-size:22px}.chapter-content{font-size:16px}.font-controls{bottom:16px;right:16px}.back-to-top{bottom:16px;left:16px}}