{{-- Preloader inicial — ECG "Gradiente + glow". Estilos en resources/sass/modern.scss §34.
     Se oculta vía hideInitialLoader() en app.blade.php (target: .ef-preloader). --}}
<div class="ef-preloader" id="efPreloader">
    <svg class="ef-ecg" viewBox="0 0 230 70" aria-hidden="true" focusable="false">
        <defs>
            <linearGradient id="efEcgGrad" x1="0" y1="0" x2="1" y2="0">
                <stop offset="0" stop-color="#0D47A1" />
                <stop offset="1" stop-color="#4DB6AC" />
            </linearGradient>
        </defs>
        <path d="M5 35 H70 L78 35 L86 13 L96 60 L106 26 L114 35 H225" />
    </svg>
    <span class="ef-preloader__sr">Cargando…</span>
</div>