:root{--bg:#fff;--bg-secondary:#f5f5f7;--text:#1d1d1f;--text-secondary:#86868b;--text-tertiary:#aeaeb2;--border:#d2d2d7;--accent:#0071e3;--accent-hover:#0077ed;--accent-soft:#0071e314;--header-bg:#ffffffd9;--sidebar-bg:#fff;--overlay:#0000004d;--shadow:0 2px 12px #00000014;--shadow-lg:0 8px 30px #0000001f;--progress-fill:#0071e3;--progress-track:#e8e8ed;--chapter-title:#1d1d1f;--chapter-text:#1d1d1f;--code-bg:#f5f5f7;--code-border:#e8e8ed;--reader-width:42rem;--reader-font-size:1.05rem;--reader-line-height:1.75;--reader-font-family:"Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono:"JetBrains Mono", "SF Mono", "Fira Code", monospace;--transition:.25s cubic-bezier(.4, 0, .2, 1);--sidebar-width:320px;--header-height:52px;--footer-height:56px}*{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-size:15px}body{font-family:var(--reader-font-family);background:var(--bg);color:var(--text);flex-direction:column;height:100vh;display:flex;overflow:hidden}#app-header{height:var(--header-height);background:var(--header-bg);-webkit-backdrop-filter:saturate(180%)blur(20px);border-bottom:1px solid var(--border);z-index:30;user-select:none;flex-shrink:0;justify-content:space-between;align-items:center;padding:0 16px;display:flex}.header-left,.header-right{flex:1;align-items:center;gap:4px;display:flex}.header-right{justify-content:flex-end}.header-center{flex:2;justify-content:center;align-items:center;gap:8px;min-width:0;display:flex}.app-title{color:var(--text);letter-spacing:-.01em;font-size:.85rem;font-weight:600}.title-separator{color:var(--text-tertiary);font-size:.85rem}.book-title{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;max-width:300px;font-size:.85rem;overflow:hidden}.demo-picker{-webkit-appearance:none;appearance:none;background:var(--bg-secondary);height:32px;color:var(--text);cursor:pointer;transition:var(--transition);background-image:url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolyline points='6 9 12 15 18 9' stroke='%2386868b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;border:none;border-radius:8px;outline:none;padding:0 28px 0 12px;font-family:inherit;font-size:.8rem;font-weight:500}.demo-picker:hover{background-color:var(--accent-soft)}.demo-picker:focus{box-shadow:0 0 0 2px var(--accent-soft)}.header-divider{background:var(--border);width:1px;height:20px;margin:0 8px}.icon-btn{width:36px;height:36px;color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;display:inline-flex}.icon-btn:hover{background:var(--accent-soft);color:var(--accent)}.icon-btn:active{transform:scale(.92)}.icon-btn:disabled{opacity:.3;cursor:default;pointer-events:none}.text-btn{background:var(--accent);color:#fff;cursor:pointer;height:32px;transition:var(--transition);border:none;border-radius:8px;align-items:center;padding:0 14px;font-family:inherit;font-size:.85rem;font-weight:500;display:inline-flex}.text-btn:hover{background:var(--accent-hover)}.text-btn:active{transform:scale(.96)}.btn-label{color:inherit;font-size:.8rem;font-weight:500}#app-footer{height:var(--footer-height);background:var(--header-bg);-webkit-backdrop-filter:saturate(180%)blur(20px);border-top:1px solid var(--border);z-index:30;user-select:none;flex-shrink:0;justify-content:space-between;align-items:center;padding:0 20px;display:flex}.footer-left,.footer-right{flex:1;align-items:center;gap:4px;display:flex}.footer-right{justify-content:flex-end}.footer-center{flex:2;justify-content:center;align-items:center;gap:12px;display:flex}#app-footer .icon-btn{gap:4px;width:auto;padding:0 8px}.progress-container{flex-direction:column;align-items:center;gap:6px;width:100%;max-width:300px;display:flex}.progress-bar-track{background:var(--progress-track);border-radius:2px;width:100%;height:3px;overflow:hidden}.progress-bar-fill{background:var(--progress-fill);border-radius:2px;height:100%;transition:width .4s}.progress-info{color:var(--text-secondary);font-variant-numeric:tabular-nums;align-items:center;gap:4px;font-size:.8rem;display:flex}.progress-sep{color:var(--text-tertiary)}.progress-chapter{color:var(--text-tertiary);white-space:nowrap;text-overflow:ellipsis;max-width:140px;margin-left:4px;overflow:hidden}.ref-page{color:var(--accent);font-variant-numeric:tabular-nums;min-width:2em;font-weight:600}.overlay{background:var(--overlay);z-index:35;opacity:0;pointer-events:none;transition:opacity var(--transition);position:fixed;inset:0}.overlay.open{opacity:1;pointer-events:auto}.message{background:var(--sidebar-bg);box-shadow:var(--shadow-lg);z-index:50;text-align:center;border-radius:16px;flex-direction:column;align-items:center;gap:8px;min-width:280px;padding:2rem;display:none;position:fixed;top:50%;left:50%;transform:translate(-50%,-50%)}.message.show{display:flex}.message h3{color:var(--text);font-size:1.1rem}.message p{color:var(--text-secondary);font-size:.9rem}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.toast{color:var(--text);background:var(--bg-secondary);border:1px solid var(--border);opacity:0;pointer-events:none;z-index:1000;border-radius:8px;padding:8px 20px;font-size:.85rem;font-weight:500;transition:opacity .2s,transform .2s;position:fixed;bottom:80px;left:50%;transform:translate(-50%)translateY(10px);box-shadow:0 4px 12px #0000001a}.toast.show{opacity:1;transform:translate(-50%)translateY(0)}input[type=file]{display:none}body.page-scroll{height:auto;min-height:100vh;display:block;overflow-y:auto}body.page-scroll #app-header{position:sticky;top:0}.header-nav{align-items:center;gap:6px;display:flex}.header-nav a{height:32px;color:var(--text-secondary);transition:var(--transition);border-radius:8px;align-items:center;padding:0 14px;font-family:inherit;font-size:.85rem;font-weight:500;text-decoration:none;display:inline-flex}.header-nav a:hover{background:var(--accent-soft);color:var(--accent)}.container{max-width:1100px;margin:0 auto;padding:24px 20px 48px}.container-narrow{max-width:600px}.container-grid{grid-template-columns:1fr;gap:20px;display:grid}.page-title{color:var(--text);letter-spacing:-.02em;margin-bottom:24px;font-size:1.6rem;font-weight:700}.drop-zone{border:2px dashed var(--border);background:var(--bg-secondary);cursor:pointer;transition:var(--transition);text-align:center;border-radius:16px;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:48px 24px;display:flex}.drop-zone:hover{border-color:var(--accent);background:var(--accent-soft)}.drop-zone.dragover{border-color:var(--accent);background:var(--accent-soft);transform:scale(1.01)}.drop-zone .icon{color:var(--text-tertiary);transition:var(--transition)}.drop-zone:hover .icon,.drop-zone.dragover .icon{color:var(--accent)}.drop-zone h2{color:var(--text);font-size:1.1rem;font-weight:600}.drop-zone p{color:var(--text-secondary);font-size:.9rem}.status{background:var(--bg-secondary);color:var(--text);border-radius:10px;align-items:center;gap:10px;padding:12px 16px;font-size:.9rem;font-weight:500;display:none}.status.active{display:flex}.status.loading{background:var(--accent-soft);color:var(--accent)}.status.success{color:#2e7d32;background:#e8f5e9}.status.error{color:#c62828;background:#fce4ec}.status .progress-bar{background:var(--progress-track);border-radius:2px;flex:1;height:4px;overflow:hidden}.status .progress-bar .fill{background:var(--accent);border-radius:2px;width:0%;height:100%;transition:width .3s}.panel{background:var(--bg);border:1px solid var(--border);border-radius:12px;display:none;overflow:hidden}.panel.visible{display:block}.panel>h2{color:var(--text);border-bottom:1px solid var(--border);background:var(--bg-secondary);align-items:center;gap:8px;padding:16px 20px;font-size:.95rem;font-weight:600;display:flex}.panel>h2 svg{color:var(--accent);flex-shrink:0}.panel .scroll-content{padding:16px 20px}.table-container{padding:0;overflow-x:auto}.table-container table{border-collapse:collapse;width:100%;font-size:.85rem}.table-container th,.table-container td{text-align:left;border-bottom:1px solid var(--border);white-space:nowrap;padding:10px 14px}.table-container th{background:var(--bg-secondary);color:var(--text-secondary);text-transform:uppercase;letter-spacing:.03em;font-size:.8rem;font-weight:600;position:sticky;top:0}.table-container tbody tr:last-child td{border-bottom:none}.table-container tbody tr:hover td{background:var(--accent-soft)}.info-grid{grid-template-columns:auto auto;gap:8px;display:grid}.info-grid .info-item{background:var(--bg-secondary);border-radius:8px;padding:12px 14px}.info-grid .info-item .label{color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.03em;margin-bottom:4px;font-size:.75rem;display:block}.info-grid .info-item .value{color:var(--text);font-variant-numeric:tabular-nums;font-size:.9rem;font-weight:500}.info-grid-side{flex-direction:column;gap:2px;display:flex}.info-grid-side .info-item{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;padding:6px 0;display:flex}.info-grid-side .info-item:last-child{border-bottom:none}.info-grid-side .info-item .label{color:var(--text-secondary);font-size:.8rem}.info-grid-side .info-item .value{color:var(--text);font-variant-numeric:tabular-nums;text-align:right;flex-shrink:0;font-size:.85rem;font-weight:500}.info-grid-side .info-item:has(.features-grid){flex-direction:column;align-items:stretch;gap:6px}.info-grid-side .info-item:has(.features-grid) .value{text-align:left}.flag-badge{border-radius:4px;padding:2px 8px;font-size:.75rem;font-weight:600;display:inline-block}.flag-badge.on{color:#2e7d32;background:#e8f5e9}.flag-badge.off{background:var(--bg-secondary);color:var(--text-tertiary)}.btn{cursor:pointer;height:36px;transition:var(--transition);border:none;border-radius:8px;align-items:center;gap:6px;padding:0 16px;font-family:inherit;font-size:.85rem;font-weight:500;display:inline-flex}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;cursor:default;pointer-events:none}.btn-secondary{background:var(--bg-secondary);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent);color:var(--accent)}.btn-success{background:var(--accent);color:#fff}.btn-success:hover{background:var(--accent-hover)}.settings-options{background:var(--bg-secondary);border-radius:10px;gap:6px;padding:4px;display:flex}.setting-option{color:var(--text-secondary);cursor:pointer;transition:var(--transition);background:0 0;border:none;border-radius:8px;flex:1;justify-content:center;align-items:center;gap:6px;padding:8px 12px;font-family:inherit;font-size:.85rem;font-weight:500;display:flex}.setting-option:hover{color:var(--text)}.setting-option.active{background:var(--bg);color:var(--text);box-shadow:var(--shadow)}.setting-option:disabled{opacity:.3;cursor:default}.btn-row{border-top:1px solid var(--border);background:var(--bg);gap:8px;padding:12px 20px;display:flex}.btn-row.sticky-bottom{position:sticky;bottom:0}.field{margin-bottom:12px}.field label{color:var(--text-secondary);margin-bottom:4px;font-size:.8rem;font-weight:600;display:block}.field input[type=text],.field input[type=number],.field textarea{border:1px solid var(--border);width:100%;color:var(--text);background:var(--bg);transition:var(--transition);border-radius:8px;outline:none;padding:8px 12px;font-family:inherit;font-size:.9rem}.field input[type=text]:focus,.field input[type=number]:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.field textarea{resize:vertical;min-height:80px}.tag-list{flex-wrap:wrap;gap:4px;margin-bottom:6px;display:flex}.tag{background:var(--accent-soft);color:var(--accent);border-radius:4px;align-items:center;gap:4px;padding:3px 8px;font-size:.8rem;font-weight:500;display:inline-flex}.tag .remove{cursor:pointer;opacity:.6;transition:var(--transition);font-size:1.1rem;line-height:1}.tag .remove:hover{opacity:1}.tag-input{gap:6px;display:flex}.tag-input input{border:1px solid var(--border);color:var(--text);background:var(--bg);transition:var(--transition);border-radius:6px;outline:none;flex:1;padding:6px 10px;font-family:inherit;font-size:.85rem}.tag-input input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.tag-input button{background:var(--accent);color:#fff;cursor:pointer;transition:var(--transition);border:none;border-radius:6px;padding:6px 12px;font-family:inherit;font-size:.85rem;font-weight:500}.tag-input button:hover{background:var(--accent-hover)}.powered-by{text-align:center;color:var(--text-tertiary);border-top:1px solid var(--border);background:var(--header-bg);-webkit-backdrop-filter:saturate(180%)blur(20px);flex-shrink:0;padding:12px 20px;font-size:.75rem}.powered-by a{color:var(--text-secondary);transition:var(--transition);font-weight:500;text-decoration:none}.powered-by a:hover{color:var(--accent)}.powered-by .sep{color:var(--text-tertiary);margin:0 6px}.id-type,.id-value{border:1px solid var(--border);color:var(--text);background:var(--bg);transition:var(--transition);border-radius:6px;outline:none;padding:6px 10px;font-family:inherit;font-size:.85rem}.id-type:focus,.id-value:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}