.csvjson-container{max-width:900px;margin:0 auto;padding:20px}.tool-title{margin-bottom:10px;font-size:32px;font-weight:700}.tool-subtitle{color:#555;margin-bottom:24px;font-size:16px}.json-input{background:#fafafa;border:1px solid #ccc;border-radius:6px;width:100%;min-height:180px;margin-bottom:14px;padding:12px;font-family:monospace}.btn-row{gap:12px;margin-bottom:20px;display:flex}.btn-format,.btn-beautify{cursor:pointer;color:#fff;border:none;border-radius:6px;padding:10px 18px;font-weight:600}.btn-format{background:#004aad}.btn-beautify{background:#28a745}.btn-format.active,.btn-beautify.active{box-shadow:inset 0 0 0 2px #0bc0d4}.output-wrapper{margin-top:20px;position:relative}.copy-badge{cursor:pointer;background:#f0f0f0;border:1px solid #ddd;border-radius:12px;align-items:center;gap:4px;padding:4px 10px;display:flex;position:absolute;top:8px;right:12px}.json-output-block{color:#f1f1f1;white-space:pre-wrap;background:#1e1e1e;border:1px solid #444;border-radius:8px;margin-bottom:30px;padding:16px;font-family:monospace;overflow-x:auto}.json-error{color:#d8000c;background:#ffecec;border-left:4px solid #d8000c;border-radius:6px;margin-top:12px;padding:10px;font-weight:500}.seo-section{background:#f9f9fb;border:1px solid #e2e6ef;border-radius:10px;margin-top:40px;padding:24px}.seo-section h2{margin-bottom:10px;font-size:24px;font-weight:700}.seo-section h3{margin-top:20px;font-size:18px;font-weight:600}.seo-section ul{padding-left:20px}@media (max-width:700px){.btn-row{flex-direction:column}}