.tech-rain {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background:
        radial-gradient(circle at 20% 20%, rgba(37, 99, 235, .35), transparent 25%),
        radial-gradient(circle at 80% 30%, rgba(14, 165, 233, .22), transparent 28%),
        linear-gradient(135deg, #020617, #0f172a 45%, #111827);
}

.tech-rain::before {
    content: "010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101010101";
    position: absolute;
    top: -120%;
    left: 0;
    width: 100%;
    height: 300%;
    color: rgba(96, 165, 250, .22);
    font-size: 22px;
    line-height: 44px;
    letter-spacing: 18px;
    word-spacing: 25px;
    animation: digitalRain 10s linear infinite;
    white-space: normal;
    text-shadow: 0 0 12px rgba(96, 165, 250, .7);
}

.tech-rain::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(59, 130, 246, .08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, .08) 1px, transparent 1px);
    background-size: 70px 70px;
    animation: gridMove 18s linear infinite;
}

@keyframes digitalRain {
    from {
        transform: translateY(-20%);
    }
    to {
        transform: translateY(35%);
    }
}

@keyframes gridMove {
    from {
        background-position: 0 0;
    }
    to {
        background-position: 140px 140px;
    }
}