:root {
            --neon-red: #ff0000;
            --dark-bg: #050505;
            --card-bg: #0d0d0d;
        }

        body {
            background-color: var(--dark-bg);
            color: white;
            font-family: 'Segoe UI', sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        /* HEADER ESTILO MONITOR */
        .header-diag {
            width: 100%;
            padding: 40px 0;
            text-align: center;
            border-bottom: 1px solid #1a1a1a;
            background: linear-gradient(to bottom, #000, var(--dark-bg));
        }

        .titulo-glow {
            font-size: 3rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 4px;
            color: #fff;
            text-shadow: 0 0 15px rgba(255, 255, 255, 0.8), 0 0 30px var(--neon-red);
            margin: 0;
        }

        .container {
            max-width: 1000px;
            width: 90%;
            margin: 40px 0;
        }

        /* GRID DE PROTOCOLO */
        .grid-protocolo {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 25px;
        }

        .card-detalhe {
            background: var(--card-bg);
            border: 1px solid #1a1a1a;
            padding: 30px;
            border-radius: 12px;
            border-left: 4px solid var(--neon-red);
            transition: 0.3s;
        }

        .card-detalhe:hover {
            box-shadow: 0 0 20px rgba(255, 0, 0, 0.2);
            border-color: var(--neon-red);
        }

        .card-detalhe h2 {
            color: var(--neon-red);
            font-size: 1.2rem;
            text-transform: uppercase;
            margin-top: 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .card-detalhe p {
            color: #ccc;
            line-height: 1.6;
        }

        /* LISTA TECH */
        .tech-list {
            list-style: none;
            padding: 0;
        }

        .tech-list li {
            padding: 10px 0;
            border-bottom: 1px solid #1a1a1a;
            display: flex;
            justify-content: space-between;
        }

        .tech-list li span { color: var(--neon-red); font-weight: bold; }

        .btn-acao {
            display: inline-block;
            margin-top: 40px;
            padding: 15px 40px;
            background: var(--neon-red);
            color: white;
            text-decoration: none;
            font-weight: bold;
            text-transform: uppercase;
            border-radius: 5px;
            box-shadow: 0 0 15px rgba(255, 0, 0, 0.4);
            transition: 0.3s;
        }

        .btn-acao:hover { transform: scale(1.05); background: #cc0000; }

       .btn-voltar-principal {
    display: inline-block;
    margin-top: 30px;
    padding: 15px 35px;
    background-color: transparent;
    color: #ffffff;
    text-decoration: none;
    font-weight: 800;
    font-size: 14px;
    border: 2px solid var(--neon-red);
    border-radius: 5px;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 0 15px rgba(255, 0, 0, 0.3);
}

.btn-voltar-principal:hover {
    background-color: var(--neon-red);
    color: #000; /* Texto fica preto no fundo vermelho para contraste */
    box-shadow: 0 0 30px var(--neon-red), 0 0 50px rgba(255, 0, 0, 0.6);
    transform: translateY(-3px);
}