:root {
    --azul-principal: #1F4788;
    --azul-oscuro: #14305D;
    --naranja-cta: #FF6B35;
    --gris-fondo: #F4F6F9;
    --texto-oscuro: #2D3142;
    --blanco: #FFFFFF;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.6;
    color: var(--texto-oscuro);
    background-color: var(--gris-fondo);
}

header {
    background-color: var(--azul-principal);
    color: var(--blanco);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    position: sticky;
    top: 0;
    z-index: 100;
}

header .logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
}

header nav ul {
    display: flex;
    list-style: none;
}

header nav ul li a {
    color: var(--blanco);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: bold;
    transition: background 0.3s;
}

header nav ul li a:hover, header nav ul li a.active {
    background-color: var(--naranja-cta);
}

.hero {
    background: linear-gradient(rgba(31, 71, 136, 0.85), rgba(20, 48, 93, 0.9)), url('https://via.placeholder.com/1200x500') no-repeat center center/cover;
    color: var(--blanco);
    text-align: center;
    padding: 6rem 1.5rem;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto 2rem auto;
}

.btn-principal {
    display: inline-block;
    background-color: var(--naranja-cta);
    color: var(--blanco);
    padding: 0.8rem 2rem;
    text-decoration: none;
    font-weight: bold;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-principal:hover {
    background-color: #e0531f;
}

.contenido-paginas {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.contenido-paginas h1 {
    color: var(--azul-principal);
    margin-bottom: 1rem;
}

.introduccion {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.sobre-nosotros {
    max-width: 800px;
    margin: 3rem auto;
    text-align: center;
    padding: 0 1rem;
}

.sobre-nosotros h2 {
    color: var(--azul-principal);
    margin-bottom: 1rem;
}

.ventajas {
    display: flex;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 2rem auto 4rem auto;
    padding: 0 1rem;
}

.tarjeta-ventaja {
    background: var(--blanco);
    padding: 1.5rem;
    border-left: 5px solid var(--azul-principal);
    border-radius: 4px;
    flex: 1;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.lista-servicios {
    list-style-type: square;
    margin-left: 2rem;
    margin-bottom: 3rem;
}

.lista-servicios li {
    margin-bottom: 0.8rem;
    font-size: 1.1rem;
}

.contenedor-paquetes {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
    align-items: stretch;
}

.tarjeta-precio {
    background: var(--blanco);
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 2rem;
    flex: 1;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.tarjeta-precio.destacado {
    border: 2px solid var(--naranja-cta);
    position: relative;
    transform: scale(1.03);
}

.tarjeta-precio h3 {
    color: var(--azul-principal);
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.precio {
    font-weight: bold;
    color: var(--naranja-cta);
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.tarjeta-precio ul {
    list-style: none;
    margin-bottom: 1.5rem;
    text-align: left;
}

.tarjeta-precio ul li {
    padding: 0.4rem 0;
    border-bottom: 1px solid #eee;
}

.tarjeta-precio ul li.no-incluido {
    color: #999;
    text-decoration: line-through;
}

.btn-tarjeta {
    display: block;
    background: var(--azul-principal);
    color: var(--blanco);
    padding: 0.6rem 1rem;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
}

.btn-tarjeta:hover {
    background: var(--azul-oscuro);
}

.sistema-personalizado {
    background: var(--blanco);
    padding: 2rem;
    border-radius: 6px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.sistema-personalizado h3 {
    margin-bottom: 0.5rem;
}

.sistema-personalizado p {
    margin-bottom: 1.5rem;
}

.bloque-consejos {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.consejo {
    background: var(--blanco);
    padding: 1.5rem;
    border-radius: 4px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.consejo h3 {
    color: var(--azul-principal);
    margin-bottom: 0.5rem;
}

.formulario-seccion {
    background: var(--blanco);
    padding: 2.5rem;
    border-radius: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    max-width: 600px;
    margin: 0 auto;
}

.campo {
    margin-bottom: 1.2rem;
}

.campo label {
    display: block;
    font-weight: bold;
    margin-bottom: 0.4rem;
}

.campo input, .campo select, .campo textarea {
    width: 100%;
    padding: 0.7rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.campo input:focus, .campo select:focus, .campo textarea:focus {
    outline: none;
    border-color: var(--azul-principal);
}

footer {
    background-color: var(--azul-oscuro);
    color: var(--blanco);
    text-align: center;
    padding: 1.5rem;
    margin-top: 4rem;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    header nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .ventajas, .contenedor-paquetes {
        flex-direction: column;
    }

    .tarjeta-precio.destacado {
        transform: none;
        margin: 0;
    }

    .bloque-consejos {
        grid-template-columns: 1fr;
    }
    
    .formulario-seccion {
        padding: 1.5rem;
    }
}