*,:before,:after{box-sizing:border-box}:root{--bg:#fafafa;--surface:#fff;--border:#e5e7eb;--text:#1f2937;--text-secondary:#6b7280;--accent:#2563eb;--accent-hover:#1d4ed8;--success:#16a34a;--warning:#d97706;--danger:#dc2626;--radius:10px;--radius-sm:6px;--shadow:0 1px 2px #0000000f;--shadow-md:0 4px 12px #00000014;--focus-ring:0 0 0 3px #2563eb59;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans SC,sans-serif;font-size:15px;line-height:1.6}body{min-height:100vh;margin:0}header{background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;padding:16px 24px;display:flex}header h1{white-space:nowrap;margin:0;font-size:18px;font-weight:600}.steps ol{align-items:center;gap:0;margin:0;padding:0;list-style:none;display:flex}.step-item{color:var(--text-secondary);align-items:center;gap:6px;font-size:13px;transition:color .2s;display:flex;position:relative}.step-item+.step-item{margin-left:8px}.step-item+.step-item:before{content:"";background:var(--border);width:20px;height:1.5px;margin-right:8px;transition:background .2s;display:block}.step-dot{border:2px solid var(--border);background:var(--bg);width:24px;height:24px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;font-size:12px;font-weight:600;transition:all .2s;display:flex}.step-item.active{color:var(--accent)}.step-item.active .step-dot{background:var(--accent);border-color:var(--accent);color:#fff}.step-item.active+.step-item:before{background:var(--accent)}.step-item.done{color:var(--success)}.step-item.done .step-dot{background:var(--success);border-color:var(--success);color:#fff;font-size:0}.step-item.done .step-dot:after{content:"";border-bottom:2px solid #fff;border-left:2px solid #fff;width:10px;height:6px;display:block;transform:rotate(-45deg)translateY(-1px)}.step-item.done+.step-item:before{background:var(--success)}#file-bar{color:var(--text-secondary);align-items:center;gap:12px;font-size:13px;display:flex}#file-bar-name{text-overflow:ellipsis;white-space:nowrap;max-width:200px;overflow:hidden}.btn-text{color:var(--accent);cursor:pointer;border-radius:var(--radius-sm);background:0 0;border:none;padding:4px 8px;font-size:13px;transition:background .15s}.btn-text:hover{background:#2563eb0f}.stage-center{flex-direction:column;justify-content:center;align-items:center;min-height:calc(100vh - 80px);padding:40px 20px;display:flex}.upload-zone{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;cursor:pointer;flex-direction:column;align-items:center;gap:12px;width:100%;max-width:440px;padding:56px 32px;transition:border-color .2s,background .2s,transform .15s;display:flex}.upload-zone:hover,.upload-zone:focus-visible,.upload-zone.drag-over{border-color:var(--accent);background:#2563eb08}.upload-zone.drag-over{transform:scale(1.02)}.upload-icon{color:var(--text-secondary);transition:color .2s}.upload-zone:hover .upload-icon{color:var(--accent)}.upload-title{color:var(--text);margin:0;font-size:18px;font-weight:600}.upload-hint{color:var(--text-secondary);margin:0;font-size:14px}.upload-desc{color:#9ca3af;margin:4px 0 0;font-size:12px}#workspace{gap:0;height:calc(100vh - 60px);display:flex}.viewer-col{flex-direction:column;flex:1;min-width:0;padding:20px;display:flex;overflow:hidden}.panel-col{border-left:1px solid var(--border);background:var(--surface);flex-direction:column;flex-shrink:0;gap:16px;width:380px;padding:24px;display:flex;overflow-y:auto}.viewer-toolbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}#viewer-label{font-size:14px;font-weight:600}.page-nav{align-items:center;gap:8px;display:flex}.page-nav button{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);cursor:pointer;min-width:44px;min-height:44px;color:var(--text);justify-content:center;align-items:center;transition:border-color .15s,box-shadow .15s;display:flex}.page-nav button:hover:not(:disabled){border-color:var(--accent)}.page-nav button:disabled{opacity:.3;cursor:not-allowed}#page-indicator{color:var(--text-secondary);white-space:nowrap;font-size:13px}#viewer-split{flex:1;grid-template-columns:1fr 1fr;gap:12px;min-height:0;display:grid}.viewer-pane{border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff;flex-direction:column;min-height:0;display:flex;overflow:hidden}.viewer-pane-hidden{display:none}.pane-label{color:var(--text-secondary);background:var(--bg);border-bottom:1px solid var(--border);flex-shrink:0;padding:8px 12px;font-size:12px;font-weight:600}.pane-canvas-wrap{flex:1;justify-content:center;align-items:center;min-height:0;display:flex;position:relative;overflow:hidden}.pane-canvas-wrap canvas{object-fit:contain;width:100%;height:100%}.step-panel{text-align:center;flex-direction:column;align-items:center;gap:16px;display:flex}.step-panel h2{margin:0;font-size:20px;font-weight:600}.panel-desc{color:var(--text-secondary);margin:0;font-size:14px}.char-input-wrap{justify-content:center;display:flex}.char-input-wrap input{text-align:center;border:2px solid var(--border);border-radius:var(--radius);width:96px;height:96px;caret-color:var(--accent);outline:none;font-family:Noto Sans SC,Microsoft YaHei,PingFang SC,serif;font-size:48px;transition:border-color .15s,box-shadow .15s}.char-input-wrap input:focus{border-color:var(--accent);box-shadow:var(--focus-ring)}.panel-result{text-align:center}.panel-result p{margin:0}#search-count{font-size:15px;font-weight:500}#search-empty{color:var(--warning);font-size:14px}#target-status{font-size:15px}#target-status.ok{color:var(--success)}#target-status.warn{color:var(--warning)}#target-status.error{color:var(--danger)}.panel-detail{text-align:left;width:100%;margin-top:4px}.panel-detail summary{color:var(--text-secondary);cursor:pointer;-webkit-user-select:none;user-select:none;padding:4px 0;font-size:13px}.panel-detail ul{color:var(--text-secondary);margin:8px 0 0;padding:0 0 0 16px;font-size:13px;line-height:1.8}.panel-detail li strong{color:var(--text)}.confirm-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}#panel-find-replace{flex-direction:column;gap:16px;display:flex}.field-group{flex-direction:column;gap:6px;display:flex}.field-group label{color:var(--text);font-size:13px;font-weight:600}.field-group input{border:2px solid var(--border);border-radius:var(--radius-sm);outline:none;width:100%;padding:10px 14px;font-family:Noto Sans SC,Microsoft YaHei,PingFang SC,sans-serif;font-size:16px;transition:border-color .15s}.field-group input:focus{border-color:var(--accent)}.field-group .btn-primary{align-self:flex-start;padding:8px 24px;font-size:14px}.hint{color:var(--text-secondary);margin:0;font-size:12px}#width-info.ok{color:var(--success)}#width-info.warn{color:var(--warning)}.match-nav{justify-content:space-between;align-items:center;padding:8px 0;display:flex}#match-index{color:var(--text);font-size:14px;font-weight:600}.nav-buttons{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.nav-buttons .btn-primary,.nav-buttons .btn-secondary{align-items:center;gap:4px;padding:10px 16px;font-size:14px;display:flex}.replace-stats{color:var(--text-secondary);flex-wrap:wrap;justify-content:center;gap:8px;font-size:13px;display:flex}.stat-sep{color:var(--border)}#stat-replaced{color:var(--success)}#stat-skipped{color:var(--text-secondary)}.premium-gate{border-top:1px solid var(--border);text-align:center;padding-top:12px}.premium-gate .btn-text{color:var(--text-secondary);font-size:13px}.btn-primary{background:var(--accent);color:#fff;border-radius:var(--radius-sm);cursor:pointer;border:none;padding:12px 28px;font-size:15px;font-weight:600;transition:background .15s,box-shadow .15s}.btn-primary:hover:not(:disabled){background:var(--accent-hover)}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-secondary{background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;padding:12px 28px;font-size:15px;font-weight:500;transition:border-color .15s,background .15s}.btn-secondary:hover{background:var(--bg);border-color:#d1d5db}#progress-wrap{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm);align-items:center;gap:12px;padding:12px 16px;display:flex}#progress-bar{background:var(--border);border-radius:3px;flex:1;height:6px;overflow:hidden}#progress-fill{background:var(--accent);border-radius:3px;width:0%;height:100%;transition:width .3s}#progress-text{color:var(--text-secondary);white-space:nowrap;font-size:13px}#log-toolbar{align-items:center;gap:10px;margin-top:10px;display:flex}#log-toolbar-label{color:var(--text-secondary,#666);font-size:13px}#log-filters{gap:4px;display:flex}.log-filter{border:1px solid var(--border,#ddd);border-radius:var(--radius-sm,4px);color:var(--text-secondary,#666);cursor:pointer;background:0 0;padding:3px 10px;font-size:12px}.log-filter.active{background:var(--accent,#4f6df5);border-color:var(--accent,#4f6df5);color:#fff}#log-export-btn{margin-left:auto;padding:3px 10px;font-size:12px}#log-output{color:#cdd6f4;border-radius:var(--radius-sm);white-space:pre-wrap;background:#1e1e2e;max-height:200px;padding:12px;font-family:ui-monospace,Consolas,Courier New,monospace;font-size:12px;line-height:1.5;overflow-y:auto}#log-output:empty{display:none}#log-output .debug{color:#9399b2}#log-output .info{color:#cdd6f4}#log-output .warn{color:var(--warning)}#log-output .error{color:var(--danger)}#log-output .ok{color:var(--success)}#log-output .log-meta{color:#9399b2;font-size:11px}.error-msg{border-radius:var(--radius-sm);color:var(--danger);text-align:center;background:#fef2f2;border:1px solid #fecaca;padding:10px 14px;font-size:13px}:focus-visible{box-shadow:var(--focus-ring);outline:none}.upload-zone:focus-visible{border-color:var(--accent);box-shadow:var(--focus-ring);outline:none}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:0s!important;animation-duration:0s!important}}@media (width<=900px){#workspace{flex-direction:column;height:auto;min-height:calc(100vh - 60px)}.panel-col{border-left:none;border-top:1px solid var(--border);width:100%;max-height:none}.viewer-col{flex:none;height:55vh}#viewer-split{grid-template-columns:1fr}header{padding:12px 16px}header h1{font-size:16px}.steps ol{gap:0}.step-label{display:none}.step-item+.step-item:before{width:14px}.stage-center{min-height:calc(100vh - 60px);padding:24px 16px}.upload-zone{max-width:100%;padding:40px 24px}.char-input-wrap input{width:80px;height:80px;font-size:40px}}@media (width<=480px){.upload-title{font-size:16px}.upload-zone{padding:32px 16px}.confirm-actions{flex-direction:column;align-items:center}}.hidden{display:none!important}