body {
    background-color: #000;
    color: #00ff00;
    font-family: 'Courier New', Courier, monospace;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}
canvas#matrix {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    display: block;
}
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}
header {
    text-align: center;
    padding: 40px 0;
    text-shadow: 0 0 10px #00ff00;
    border-bottom: 1px solid #00ff00;
    margin-bottom: 20px;
}
nav { margin-top: 15px; }
nav a {
    color: #00ff00;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    margin: 0 15px;
    padding: 5px 10px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}
nav a:hover {
    background-color: #00ff00;
    color: #000;
    box-shadow: 0 0 10px #00ff00;
}
.op-link {
    border: 1px solid #00ff00;
    background-color: #002200;
}
.panel {
    border: 2px solid #00ff00;
    background-color: rgba(0, 20, 0, 0.85);
    backdrop-filter: blur(4px);
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.2);
}
h2 {
    border-bottom: 1px solid #00ff00;
    padding-bottom: 10px;
    margin-top: 0;
    text-transform: uppercase;
}
a { color: #00ff00; }
a:hover { background-color: #00ff00; color: #000; text-decoration: none; }
footer {
    text-align: center;
    margin-top: 50px;
    padding-bottom: 20px;
    font-size: 0.8em;
    opacity: 0.8;
}