body {
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 25%, #0d0d0d 50%, #1a1a1a 75%, #2a2a2a 100%);
    background-attachment: fixed;
    color: #33ff33;
    font-family: 'Courier New', monospace;
    line-height: 1.4;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.contenedor {
    max-width: 800px;
    width: 90%;
    margin: 0 auto;
    padding: 20px;
}

h1 {
    color: #66ff66;
}

h2 {
    color: #4dff4d;
}

h3 {
    color: #00cc00;
}

a {
    color: #99ff99;
    text-decoration: underline;
}

a:hover {
    color: #ccffcc;
}

body::before {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.2) 100%);
    pointer-events: none;
    z-index: -1;
}