:root{--bg-app: #ffffff;--bg-pane: #f9f9f9;--bg-header: #ffffff;--text-primary: #111827;--text-secondary: #4b5563;--text-muted: #9ca3af;--brand-color: #3b82f6;--border: #e2e8f0;--btn-primary: #111827;--btn-primary-text: #ffffff;--header-h: 80px;--footer-h: 160px;--sidebar-w: 220px;--font-sans: "Inter", system-ui, sans-serif;--font-mono: "JetBrains Mono", monospace}.theme-dark{--bg-app: #030712;--bg-pane: #0f172a;--bg-header: #030712;--text-primary: #f9fafb;--text-secondary: #d1d5db;--text-muted: #6b7280;--border: #1f2937;--brand-color: #60a5fa;--btn-primary: #f9fafb;--btn-primary-text: #030712}*{box-sizing:border-box}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);margin:0;height:100vh;overflow:hidden;transition:background-color 0s,color 0s}#app-wrapper{display:flex;flex-direction:column;height:100vh}.header{height:var(--header-h);background-color:var(--bg-header);border-bottom:1px solid var(--border);display:grid;grid-template-columns:300px 1fr 300px;align-items:center;padding:0 24px}.brand{display:flex;align-items:center;gap:12px;font-weight:700;font-size:1.25rem;letter-spacing:-.02em}.brand-logo{width:24px;height:24px;object-fit:contain;border-radius:4px}.brand-name{font-size:1.1rem;letter-spacing:-.02em}.brand-name span{color:var(--text-muted);font-weight:400}.header-center{display:flex;justify-content:center;align-items:center}.ad-banner-top{width:728px;height:50px;background:var(--bg-pane);border-radius:6px;display:flex;align-items:center;justify-content:center}.header-right{display:flex;justify-content:flex-end}.toolbar{display:flex;align-items:flex-end;gap:16px}.control{display:flex;flex-direction:column;gap:4px}.control label{font-size:10px;font-weight:600;text-transform:uppercase;color:var(--text-muted);letter-spacing:.05em}select,input{background:var(--bg-pane);border:1px solid var(--border);color:var(--text-primary);padding:8px 12px;border-radius:6px;font-family:var(--font-sans);font-size:13px;outline:none;height:36px;cursor:pointer;transition:border-color .2s}select:hover,input:hover{border-color:var(--text-muted)}.input-row{display:flex;gap:8px}#custom-dpi{width:70px}button{height:36px;padding:0 16px;border-radius:6px;font-family:var(--font-sans);font-size:13px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:8px;border:none;transition:opacity .2s,transform .1s}button:active{transform:translateY(1px)}.btn-primary{background:var(--btn-primary);color:var(--btn-primary-text)}.btn-primary:disabled{opacity:.7;cursor:wait}.btn-ghost{background:transparent;color:var(--text-primary);padding:0 8px}.btn-ghost:hover{background:var(--border)}.content-container{flex:1;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-w);background:var(--bg-app);border-right:1px solid var(--border);padding:24px;display:flex;flex-direction:column;align-items:center}.sidebar-right{border-right:none;border-left:1px solid var(--border)}.ad-vertical{width:160px;height:600px;background:var(--bg-pane);border-radius:8px;display:flex;align-items:center;justify-content:center}.ad-placeholder{font-size:10px;color:var(--text-muted);font-weight:600;letter-spacing:.1em}.pane{flex:1;display:flex;flex-direction:column;position:relative}.pane-editor{border-right:1px solid var(--border);background:var(--bg-app)}.pane-bar{height:48px;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 16px}.pane-label{font-size:12px;font-weight:600;color:var(--text-muted)}.pane-bar-right{display:flex;align-items:center;gap:16px}.select-subtle{background:transparent;border:1px solid var(--border);color:var(--text-secondary);font-weight:500;height:28px;padding:0 8px;font-size:12px}.select-subtle:hover{background:var(--bg-pane);border-color:var(--text-muted)}.editor-wrap{flex:1;position:relative;overflow:hidden}textarea{width:100%;height:100%;border:none;resize:none;padding:24px;font-family:var(--font-mono);font-size:13px;line-height:1.6;background:transparent;color:var(--text-primary);outline:none}.pane-preview{background-color:#fafafa}.theme-dark .pane-preview{background-color:#0f172a}.preview-wrap{flex:1;overflow:hidden;display:flex;align-items:center;justify-content:center;position:relative;cursor:grab}.preview-wrap:active{cursor:grabbing}#render-target{transform-origin:center center;transition:transform .2s cubic-bezier(.16,1,.3,1);-webkit-user-select:none;user-select:none;pointer-events:none;padding:40px}.zoom-toolbar{display:flex;align-items:center;background:var(--bg-pane);border:1px solid var(--border);border-radius:8px;padding:4px;gap:4px}.zoom-toolbar button{background:transparent;border:none;color:var(--text-primary);width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:6px;cursor:pointer;transition:background .2s}.zoom-toolbar button:hover{background:var(--border)}.zoom-toolbar button svg{width:16px;height:16px;min-width:16px}#zoom-val{font-size:11px;font-weight:700;min-width:44px;text-align:center;color:var(--text-secondary)}.zoom-divider{width:1px;height:20px;background:var(--border);margin:0 4px}.status-indicator{display:flex;align-items:center;gap:6px;font-size:10px;font-weight:800;color:var(--text-muted)}.dot{width:7px;height:7px;border-radius:50%;background:#10b981}.status-indicator.syncing .dot{background:#f59e0b;animation:pulse 1s infinite}.status-indicator.error .dot{background:#ef4444}@keyframes pulse{0%{opacity:1}50%{opacity:.3}to{opacity:1}}.error-display{color:#ef4444;font-family:var(--font-mono);background:#ef44441a;border:1px solid rgba(239,68,68,.2);border-radius:8px;padding:24px;max-width:80%;text-align:left}.error-title{font-weight:700;font-size:14px;margin-bottom:8px;text-transform:uppercase}.error-message{font-size:12px;white-space:pre-wrap;line-height:1.5}.footer{height:var(--footer-h);background-color:var(--bg-header);border-top:1px solid var(--border);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:24px}.footer-ad{width:728px;height:90px;background:var(--bg-pane);border-radius:8px;display:flex;align-items:center;justify-content:center}.footer-info{font-size:12px;font-weight:500;color:var(--text-muted)}.hidden{display:none!important}.sun,.moon{width:20px;height:20px}.sun{display:none}.moon,html.theme-dark .sun{display:block}html.theme-dark .moon{display:none}@media(max-width:1400px){.sidebar{display:none}.header{grid-template-columns:1fr 1fr}.header-center{display:none}}@media(max-width:900px){.header{display:flex;flex-direction:column;height:auto;padding:16px;gap:16px}.toolbar{flex-wrap:wrap;justify-content:center;width:100%}.header-right{width:100%;justify-content:center}.content-container{flex-direction:column;overflow-y:auto}.pane{min-height:50vh;border-right:none;border-bottom:1px solid var(--border)}.pane:last-child{border-bottom:none}}@media(max-width:600px){.brand-name{font-size:1rem}.toolbar{gap:12px}.control label{display:none}select,button{font-size:12px;height:32px}.input-row{width:100%}#dpi-select,#format-select{flex:1}}