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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at 50% 30%, #111827, #030712);
    padding: 3rem 1rem;
}

.neon-page {
    text-align: center;
    max-width: 900px;
    width: 100%;
}

.neon-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 800;
    letter-spacing: 4px;
    color: #f8fafc;
    text-shadow: 0 0 10px #38bdf8, 0 0 25px #38bdf8, 0 0 50px #38bdf8, 0 0 80px #38bdf8;
    animation: flicker 3s linear infinite;
    margin-bottom: 0.6rem;
}

.neon-subtitle {
    color: #94a3b8;
    font-size: 1.1rem;
    letter-spacing: 3px;
    margin-bottom: 3rem;
}

.signs {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.neon {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.neon-pink {
    color: #f472b6;
    text-shadow: 0 0 8px #f472b6, 0 0 20px #ec4899, 0 0 45px #ec4899, 0 0 80px #db2777;
    animation: flicker 4s linear infinite;
}

.neon-cyan {
    color: #22d3ee;
    text-shadow: 0 0 8px #22d3ee, 0 0 20px #06b6d4, 0 0 45px #06b6d4, 0 0 80px #0891b2;
    animation: flicker 5s linear infinite 0.5s;
}

.neon-green {
    color: #4ade80;
    text-shadow: 0 0 8px #4ade80, 0 0 20px #22c55e, 0 0 45px #22c55e, 0 0 80px #16a34a;
    animation: flicker 3.5s linear infinite 1s;
}

.neon-red {
    color: #f87171;
    text-shadow: 0 0 8px #f87171, 0 0 20px #ef4444, 0 0 45px #ef4444, 0 0 80px #dc2626;
    animation: flicker 4.5s linear infinite 0.2s;
}

@keyframes flicker {
    0%, 19%, 21%, 23%, 54%, 56%, 100% {
        opacity: 1;
        filter: brightness(1);
    }
    20%, 22%, 55% {
        opacity: 0.4;
        filter: brightness(0.6);
    }
}

@media (max-width: 480px) {
    .neon {
        letter-spacing: 2px;
    }
}