``css
/* --- GLOBAL STYLES --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    /* Set the full viewport height to ensure everything is centered */
    height: 100vh;
    width: 100%;
    
    /* Modern Background Gradient */
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0c2a 100%);
    
    /* Font family setup */
    font-family: 'Poppins', sans-serif;
    
    /* Centers content vertically and horizontally */
    display: flex;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    text-align: center;
    /* Optional: Add a subtle fade-in effect for the whole page */
    animation: fadeIn 1.5s ease-out;
}

/* --- CONTAINER STYLING --- */
.container {
    max-width: 800px;
    padding: 20px;
    animation-delay: 0.5s; /* Stagger the entry of the content */
}

/* --- HEADER (BRANDING) --- */
header h1 {
    font-size: 4.5em; /* Very large text */
    font-weight: 900;
    margin-bottom: 20px;
    letter-spacing: 3px;
    text-transform: uppercase;
}

/* Highlight the domain extension */
.highlight {
    color: #e94560; /* A striking accent color */
    font-weight: 700;
}

/* --- MAIN MESSAGE --- */
.message {
    margin-bottom: 50px;
}

.coming-soon-text {
    font-size: 1.4em;
    font-weight: 300;
    color: #b0b0b0;
    margin-bottom: 15px;
    animation: fadeIn 2s forwards; /* Staggered animation */
    opacity: 0;
}

.subtitle {
    font-size: 3.5em;
    font-weight: 700;
    letter-spacing: 2px;
    color: #ffffff;
    /* Applying a slight animation on the subtitle */
    animation: fadeIn 2.5s forwards;
    opacity: 0;
}

/* --- SUBSCRIPTION FORM --- */
.subscribe-section {
    margin-top: 40px;
    padding: 20px;
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.08); /* Semi-transparent background */
    display: inline-block;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.subscribe-section p {
    margin-bottom: 20px;
    font-weight: 300;
    color: #c0c0c0;
}

#subscribeForm {
    display: flex;
    gap: 10px;
}

#subscribeForm input[type="email"] {
    flex-grow: 1; /* Makes the input take up available space */
    padding: 12px 15px;
    border: none;
    border-radius: 8px;
    font-size: 1em;
    background-color: #ffffff;
    color: #333;
    transition: border 0.3s;
}

#subscribeForm input[type="email"]:focus {
    outline: none;
    border-color: #e94560; /* Focus visual feedback */
}

#subscribeForm button {
    background-color: #e94560;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1em;
    transition: background-color 0.3s, transform 0.2s;
    letter-spacing: 1px;
}

#subscribeForm button:hover {
    background-color: #c93c51; /* Darken the color on hover */
    transform: translateY(-2px);
}

/* --- FOOTER --- */
footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    width: 100%;
}

/* --- KEYFRAMES (Animations) --- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Media Query for smaller screens (Mobile Responsiveness) */
@media (max-width: 768px) {
    header h1 {
        font-size: 3em;
    }
    .subtitle {
        font-size: 2.5em;
    }
    #subscribeForm {
        flex-direction: column;
        gap: 10px;
    }
    #subscribeForm button, #subscribeForm input[type="email"] {
        width: 100%;
    }
}
```