*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:#f5f7fa;color:#1f2937;padding:24px}.container{max-width:800px;margin:0 auto;background:#fff;border-radius:16px;padding:24px;box-shadow:0 2px 12px #0000000d}.header{margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid #e5e7eb}.title{font-size:24px;font-weight:600;color:#1f2937;margin-bottom:8px}.url{font-size:14px;color:#6b7280;word-break:break-all}.response-section{margin-top:24px}.section-title{font-size:18px;font-weight:500;color:#1f2937;margin-bottom:16px}.response-content{background:#f9fafb;border-radius:8px;padding:16px;font-family:monospace;white-space:pre-wrap;word-break:break-all}.error{color:#ef4444;background:#fef2f2;padding:16px;border-radius:8px;margin-top:16px}.button{background:#3b82f6;color:#fff;border:none;padding:12px 24px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .3s ease}.button:hover{background:#2563eb;transform:translateY(-1px)}.loading{display:none;text-align:center;margin:16px 0}.loading:after{content:"";display:inline-block;width:20px;height:20px;border:2px solid #3b82f6;border-radius:50%;border-top-color:transparent;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}