body {
    background-color: #f9f9f9;
}

.hero-banner {
    width: 100%;
    height: 400px;
    background-image: url('https://bandup.es/assets/image_sys.png');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5); /* Superposición oscura */
}

.hero-content {
    position: relative; /* Para que esté por encima de la superposición */
    z-index: 1;
    max-width: 800px;
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5); /* Sombra para legibilidad */
}

.hero-content .subtitle {
    font-size: 1.3rem;
    font-weight: 300;
}

.security-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.security-content h2 {
    font-size: 1.8rem;
    color: #1E1E1E;
    margin-top: 3rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #E23E57;
    padding-bottom: 0.5rem;
}

.security-content h3 {
    font-size: 1.5rem;
    color: #343a40;
    margin-top: 2rem;
    margin-bottom: 1.5rem;
}

.security-content p, .security-content ul {
    line-height: 1.7;
    color: #495057;
}

.security-content ul {
    list-style: none;
    padding-left: 0;
}

.security-content ul li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.security-content ul li::before {
    content: '✓';
    color: #E23E57;
    position: absolute;
    left: 0;
    font-weight: bold;
}

.resource-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.card-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    background-color: #ffffff;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    text-decoration: none;
    color: #1E1E1E;
    font-weight: bold;
    transition: transform 0.2s, box-shadow 0.2s;
}

.card-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    text-decoration: none;
    color: #1E1E1E;
}

.card-link i {
    color: #E23E57;
    transition: transform 0.2s;
}

.card-link:hover i {
    transform: translateX(5px);
}

.support-section {
    margin-top: 3rem;
    padding: 2rem;
    background-color: #fff;
    border: 1px solid #e0e0e0;
    border-left: 5px solid #4070AB;
    border-radius: 8px;
}

.support-section h3 {
    margin-top: 0;
}

.support-section a {
    color: #4070AB;
    font-weight: bold;
    text-decoration: none;
}
.support-section a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .hero-banner {
        height: 300px; /* Un poco menos de altura en móvil */
    }

    .hero-content h1 {
        font-size: 2.2rem;
    }

    .hero-content .subtitle {
        font-size: 1.1rem;
    }

    .security-container {
        padding: 2rem 1rem;
    }
}