body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: #0a0a0a;
    color: white;
}

/* portada */
.hero {
    height: 100vh;
    background-image: url("https://images.unsplash.com/photo-1462331940025-496dfbfc7564");
    background-size: cover;
    background-position: center;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
}

.hero h1,
.hero p {
    position: relative;
}

.hero h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    margin: 0;
}

.hero p {
    font-size: 1.2rem;
}

/* contenido centrado */
.contenedor {
    max-width: 900px;
    margin: auto;
    text-align: center;
    padding: 40px 20px;
}

section {
    margin-bottom: 60px;
}

h2 {
    color: #ff6a00;
    font-family: 'Orbitron', sans-serif;
    margin-bottom: 15px;
}

p {
    line-height: 1.6;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    margin: 5px 0;
}

.imagen {
    width: 100%;
    max-width: 500px;
    display: block;
    margin: 25px auto;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.6);
}
footer {
    background-color: #111;
    text-align: center;
    padding: 20px;
}