*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:#fff;color:#1a1a1a;min-height:100vh}#app{width:100%;min-height:100vh}.page{display:flex;flex-direction:column;min-height:100vh}.page-content{padding:24px}.app-header{display:flex;align-items:center;gap:10px;padding:16px 24px;border-bottom:1px solid #eee}.app-header-logo{width:32px;height:32px;flex-shrink:0}.app-header-name{font-size:15px;font-weight:600;color:#1a1a1a}.title{font-size:24px;font-weight:700;text-align:left;margin-bottom:8px}.subtitle{font-size:14px;color:#666;text-align:left;margin-bottom:20px}.divider{border:none;border-top:1px solid #eee;margin:16px 0}.signer-info{font-size:14px;color:#444;margin-bottom:16px}.signer-info strong{color:#1a1a1a}.message-label{font-size:14px;font-weight:600;margin-bottom:8px}.message-box{border:1px solid #e0e0e0;border-radius:12px;padding:16px;max-height:200px;overflow-y:auto}.message-box pre{font-family:SF Mono,Monaco,Cascadia Code,monospace;font-size:13px;white-space:pre-wrap;word-break:break-all;color:#333;margin:0}.permission-item{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:#444;line-height:1.5;margin-bottom:8px}.permission-icon{flex-shrink:0;font-size:16px}.bottom-bar{padding:16px 24px;display:flex;gap:12px}.btn{flex:1;padding:14px 20px;border:none;border-radius:24px;font-size:16px;font-weight:600;cursor:pointer;transition:opacity .15s}.btn:active{opacity:.8}.btn-secondary{background:transparent;color:#1a1a1a;border:1px solid #ddd}.btn-secondary:hover{background:#f5f5f5}.btn-primary{background:#000;color:#fff}.btn-primary:hover{background:#222}.btn-sign{background:#000;color:#fff}.btn-sign:hover{background:#222}.payment-info{background:#f8f8f8;border-radius:12px;padding:4px 0;margin-bottom:16px}.payment-info-row{display:flex;justify-content:space-between;align-items:center;padding:12px 16px}.payment-info-row+.payment-info-row{border-top:1px solid #eee}.payment-info-label{font-size:14px;color:#666}.payment-info-value{font-size:14px;font-weight:600;color:#1a1a1a}.payment-info-token-amount{color:#0052ff}.payment-info-insufficient{color:#dc3545}.payment-error-message{text-align:center;color:#dc3545;font-size:14px;font-weight:500;margin-bottom:8px}.btn:disabled{opacity:.4;cursor:not-allowed}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100vh}.spinner{width:40px;height:40px;border:3px solid #e0e0e0;border-top-color:#000;border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}