body{margin:0;font-family:Inter,-apple-system,sans-serif;background:radial-gradient(circle at top,#0b1227 0,#0f172a 70%);color:#e5e7eb;min-height:100vh}.app{max-width:1100px;margin:0 auto;padding:24px 16px}.toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}button,input,select,textarea{border:1px solid #334155;border-radius:8px;background:#0b1220;color:#e5e7eb;padding:9px}button{background:#1f2937;cursor:pointer}.layout{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:12px}.preview-wrap{border:1px solid #334155;border-radius:10px;min-height:300px;display:grid;place-items:center;background:#0b1220}#previewImage{max-width:100%;max-height:420px;display:block}textarea{width:100%;min-height:300px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.status{color:#9ca3af}.seo-content{margin-top:14px;padding:12px;border:1px solid #334155;border-radius:10px;background:#0b1220}.seo-content h2{margin:0 0 8px;font-size:1rem;color:#cbd5e1}.seo-content p{margin:6px 0;color:#9ca3af;line-height:1.5}a{color:#93c5fd;text-decoration:none}@media (max-width:900px){.layout{grid-template-columns:1fr}}