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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
    font-family: 'Courier New', monospace;
}

canvas#matrix {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: block;
    z-index: 0;
}

main#content {
    position: relative;
    z-index: 1;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #00ff41;
    text-shadow: 0 0 10px #00ff41, 0 0 20px #00a832;
    text-align: center;
    user-select: none;
}

main#content h1 {
    font-size: 4rem;
    letter-spacing: 0.3em;
    animation: flicker 3s infinite;
}

main#content p {
    margin-top: 1rem;
    font-size: 1.2rem;
    color: #d4ff00;
}

@keyframes flicker {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

@media (max-width: 600px) {
    main#content h1 { font-size: 2.5rem; }
}