body {
    margin: 0;
    font-family: 'Open Sans', sans-serif;
    background-color: #f4f6f9;
    color: #2c2c2c;
}

.page-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 1100px;
    margin: 10px auto 40px;
    padding: 0 20px;
    box-sizing: border-box;
}

.back-link {
    position: absolute;
    left: 40px;
    top: 110px;
    color: #1E3A5F;
    font-size: 28px;
    transition: color 0.3s ease, transform 0.3s ease;
    z-index: 10;
}

.back-link:hover {
    color: #2C7DA0;
    transform: scale(1.08);
}

.main-title {
    font-size: 3rem;
    color: #003b6f;
    text-align: center;
    margin: 50px 0 20px;
    font-weight: 700;
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 1px;
    position: relative;
}

.main-title::after {
    content: '';
    display: block;
    width: 70px;
    height: 4px;
    background-color: #0077b6;
    margin: 12px auto 0;
    border-radius: 2px;
}

.contenedor {
    width: 100%;
    background: #ffffff;
    padding: 34px;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.10);
    box-sizing: border-box;
    margin-top: 20px;
}

.bloque-titulo {
    margin: 34px 0 16px;
    font-size: 1.35rem;
    color: #1E3A5F;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.3;
    border-left: 5px solid #2C7DA0;
    padding-left: 14px;
}

.bloque-titulo:first-of-type {
    margin-top: 0;
}

.texto {
    margin: 0 0 18px;
    color: #444;
    font-size: 1.04rem;
    line-height: 1.8;
    text-align: justify;
}

.lista {
    margin: 0 0 26px;
    padding-left: 22px;
    color: #444;
}

.lista > li {
    margin-bottom: 14px;
    line-height: 1.8;
    font-size: 1.02rem;
}

.lista ul {
    margin-top: 12px;
    padding-left: 22px;
}

.lista ul li {
    margin-bottom: 10px;
    line-height: 1.75;
    font-size: 1rem;
}

strong,
b {
    color: #1E3A5F;
    font-weight: 700;
}

.contenedor p:last-child,
.contenedor ul:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .main-title {
        font-size: 2.2rem;
    }

    .contenedor {
        padding: 22px 18px;
    }

    .bloque-titulo {
        font-size: 1.15rem;
        padding-left: 12px;
        margin: 28px 0 14px;
    }

    .texto,
    .lista > li,
    .lista ul li {
        font-size: 0.98rem;
        line-height: 1.7;
        text-align: left;
    }

    .back-link {
        left: 20px;
        top: 105px;
    }
}