.line6-wrap{max-width:520px;margin:40px auto;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial}.line6-card{border:1px solid #e5e7eb;border-radius:10px;padding:16px;margin-top:12px}.line6-row{display:flex;gap:12px;align-items:center;margin:10px 0}.line6-row label{width:80px;color:#374151}.line6-row input{flex:1;padding:8px 10px;border:1px solid #d1d5db;border-radius:6px}.line6-row button{padding:8px 14px;border:0;background:#2563eb;color:#fff;border-radius:6px;cursor:pointer}.line6-row button:disabled{opacity:.6;cursor:not-allowed}.line6-hint{margin-top:8px;color:#6b7280}.line6-err{margin-top:8px;color:#dc2626}