body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: #0f1720;
    color: #fff;
}

.main-header {
    text-align: center;
    padding: 40px 20px 20px;
    background: linear-gradient(to bottom, #111c26, #0f1720);
}

.logo-future {
    display: inline-block;
    padding: 50px 110px;
    border-radius: 50%;
    position: relative;
    background: radial-gradient(
        ellipse at center,
        rgba(0,255,170,0.25) 0%,
        rgba(0,255,170,0.12) 40%,
        rgba(0,0,0,0) 70%
    );
    backdrop-filter: blur(8px);
}

.logo-future img {
    width: 300px;
    display: block;
}

.logo-future::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 1px solid rgba(0,255,170,0.5);
    box-shadow:
        0 0 20px rgba(0,255,170,0.4),
        0 0 60px rgba(0,255,170,0.15);
}

nav {
    margin-top: 20px;
}

nav a {
    color: #00ffaa;
    text-decoration: none;
    margin: 0 15px;
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover {
    color: #ffffff;
}

main {
    padding: 60px 20px;
    max-width: 1100px;
    margin: auto;
}

footer {
    text-align: center;
    padding: 30px;
    background: #0c141c;
    color: #888;
}