body{color:#e2e8f0;background-color:#0f172a;max-width:600px;margin:40px auto;padding:20px;font-family:system-ui,-apple-system,sans-serif}h1{color:#06b6d4}.card{background:#1e293b;border:1px solid #334155;border-radius:10px;margin-top:20px;padding:20px}.positive{color:#10b981}